diff --git a/.nojekyll b/.nojekyll new file mode 100644 index 00000000000..e69de29bb2d diff --git a/404.html b/404.html new file mode 100644 index 00000000000..d0d2c7cecee --- /dev/null +++ b/404.html @@ -0,0 +1,31 @@ + + + + + + + + + ScyllaDB + + + + + + + + + + + +
+

404

+

The ScyllaDB monster ate your page!

+

+ Home +

+
+ + + \ No newline at end of file diff --git a/CNAME b/CNAME new file mode 100644 index 00000000000..12aae904168 --- /dev/null +++ b/CNAME @@ -0,0 +1 @@ +operator.docs.scylladb.com \ No newline at end of file diff --git a/_static/basic.css b/_static/basic.css new file mode 100644 index 00000000000..bf18350b65c --- /dev/null +++ b/_static/basic.css @@ -0,0 +1,906 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; + margin-right: 5px; +} + +/* -- sidebar --------------------------------------------------------------- */ + +div.sphinxsidebarwrapper { + padding: 10px 5px 0 10px; +} + +div.sphinxsidebar { + float: left; + width: 230px; + margin-left: -100%; + font-size: 90%; + word-wrap: break-word; + overflow-wrap : break-word; +} + +div.sphinxsidebar ul { + list-style: none; +} + +div.sphinxsidebar ul ul, +div.sphinxsidebar ul.want-points { + margin-left: 20px; + list-style: square; +} + +div.sphinxsidebar ul ul { + margin-top: 0; + margin-bottom: 0; +} + +div.sphinxsidebar form { + margin-top: 10px; +} + +div.sphinxsidebar input { + border: 1px solid #98dbcc; + font-family: sans-serif; + font-size: 1em; +} + +div.sphinxsidebar #searchbox form.search { + overflow: hidden; +} + +div.sphinxsidebar #searchbox input[type="text"] { + float: left; + width: 80%; + padding: 0.25em; + box-sizing: border-box; +} + +div.sphinxsidebar #searchbox input[type="submit"] { + float: left; + width: 20%; + border-left: none; + padding: 0.25em; + box-sizing: border-box; +} + + +img { + border: 0; + max-width: 100%; +} + +/* -- search page ----------------------------------------------------------- */ + +ul.search { + margin: 10px 0 0 20px; + padding: 0; +} + +ul.search li { + padding: 5px 0 5px 20px; + background-image: url(file.png); + background-repeat: no-repeat; + background-position: 0 7px; +} + +ul.search li a { + font-weight: bold; +} + +ul.search li p.context { + color: #888; + margin: 2px 0 0 30px; + text-align: left; +} + +ul.keywordmatches li.goodmatch a { + font-weight: bold; +} + +/* -- index page ------------------------------------------------------------ */ + +table.contentstable { + width: 90%; + margin-left: auto; + margin-right: auto; +} + +table.contentstable p.biglink { + line-height: 150%; +} + +a.biglink { + font-size: 1.3em; +} + +span.linkdescr { + font-style: italic; + padding-top: 5px; + font-size: 90%; +} + +/* -- general index --------------------------------------------------------- */ + +table.indextable { + width: 100%; +} + +table.indextable td { + text-align: left; + vertical-align: top; +} + +table.indextable ul { + margin-top: 0; + margin-bottom: 0; + list-style-type: none; +} + +table.indextable > tbody > tr > td > ul { + padding-left: 0em; +} + +table.indextable tr.pcap { + height: 10px; +} + +table.indextable tr.cap { + margin-top: 10px; + background-color: #f2f2f2; +} + +img.toggler { + margin-right: 3px; + margin-top: 3px; + cursor: pointer; +} + +div.modindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +div.genindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +/* -- domain module index --------------------------------------------------- */ + +table.modindextable td { + padding: 2px; + border-collapse: collapse; +} + +/* -- general body styles --------------------------------------------------- */ + +div.body { + min-width: 450px; + max-width: 800px; +} + +div.body p, div.body dd, div.body li, div.body blockquote { + -moz-hyphens: auto; + -ms-hyphens: auto; + -webkit-hyphens: auto; + hyphens: auto; +} + +a.headerlink { + visibility: hidden; +} + +a.brackets:before, +span.brackets > a:before{ + content: "["; +} + +a.brackets:after, +span.brackets > a:after { + content: "]"; +} + +h1:hover > a.headerlink, +h2:hover > a.headerlink, +h3:hover > a.headerlink, +h4:hover > a.headerlink, +h5:hover > a.headerlink, +h6:hover > a.headerlink, +dt:hover > a.headerlink, +caption:hover > a.headerlink, +p.caption:hover > a.headerlink, +div.code-block-caption:hover > a.headerlink { + visibility: visible; +} + +div.body p.caption { + text-align: inherit; +} + +div.body td { + text-align: left; +} + +.first { + margin-top: 0 !important; +} + +p.rubric { + margin-top: 30px; + font-weight: bold; +} + +img.align-left, figure.align-left, .figure.align-left, object.align-left { + clear: left; + float: left; + margin-right: 1em; +} + +img.align-right, figure.align-right, .figure.align-right, object.align-right { + clear: right; + float: right; + margin-left: 1em; +} + +img.align-center, figure.align-center, .figure.align-center, object.align-center { + display: block; + margin-left: auto; + margin-right: auto; +} + +img.align-default, figure.align-default, .figure.align-default { + display: block; + margin-left: auto; + margin-right: auto; +} + +.align-left { + text-align: left; +} + +.align-center { + text-align: center; +} + +.align-default { + text-align: center; +} + +.align-right { + text-align: right; +} + +/* -- sidebars -------------------------------------------------------------- */ + +div.sidebar, +aside.sidebar { + margin: 0 0 0.5em 1em; + border: 1px solid #ddb; + padding: 7px; + background-color: #ffe; + width: 40%; + float: right; + clear: right; + overflow-x: auto; +} + +p.sidebar-title { + font-weight: bold; +} + +div.admonition, div.topic, blockquote { + clear: left; +} + +/* -- topics ---------------------------------------------------------------- */ + +div.topic { + border: 1px solid #ccc; + padding: 7px; + margin: 10px 0 10px 0; +} + +p.topic-title { + font-size: 1.1em; + font-weight: bold; + margin-top: 10px; +} + +/* -- admonitions ----------------------------------------------------------- */ + +div.admonition { + margin-top: 10px; + margin-bottom: 10px; + padding: 7px; +} + +div.admonition dt { + font-weight: bold; +} + +p.admonition-title { + margin: 0px 10px 5px 0px; + font-weight: bold; +} + +div.body p.centered { + text-align: center; + margin-top: 25px; +} + +/* -- content of sidebars/topics/admonitions -------------------------------- */ + +div.sidebar > :last-child, +aside.sidebar > :last-child, +div.topic > :last-child, +div.admonition > :last-child { + margin-bottom: 0; +} + +div.sidebar::after, +aside.sidebar::after, +div.topic::after, +div.admonition::after, +blockquote::after { + display: block; + content: ''; + clear: both; +} + +/* -- tables ---------------------------------------------------------------- */ + +table.docutils { + margin-top: 10px; + margin-bottom: 10px; + border: 0; + border-collapse: collapse; +} + +table.align-center { + margin-left: auto; + margin-right: auto; +} + +table.align-default { + margin-left: auto; + margin-right: auto; +} + +table caption span.caption-number { + font-style: italic; +} + +table caption span.caption-text { +} + +table.docutils td, table.docutils th { + padding: 1px 8px 1px 5px; + border-top: 0; + border-left: 0; + border-right: 0; + border-bottom: 1px solid #aaa; +} + +table.footnote td, table.footnote th { + border: 0 !important; +} + +th { + text-align: left; + padding-right: 5px; +} + +table.citation { + border-left: solid 1px gray; + margin-left: 1px; +} + +table.citation td { + border-bottom: none; +} + +th > :first-child, +td > :first-child { + margin-top: 0px; +} + +th > :last-child, +td > :last-child { + margin-bottom: 0px; +} + +/* -- figures --------------------------------------------------------------- */ + +div.figure, figure { + margin: 0.5em; + padding: 0.5em; +} + +div.figure p.caption, figcaption { + padding: 0.3em; +} + +div.figure p.caption span.caption-number, +figcaption span.caption-number { + font-style: italic; +} + +div.figure p.caption span.caption-text, +figcaption span.caption-text { +} + +/* -- field list styles ----------------------------------------------------- */ + +table.field-list td, table.field-list th { + border: 0 !important; +} + +.field-list ul { + margin: 0; + padding-left: 1em; +} + +.field-list p { + margin: 0; +} + +.field-name { + -moz-hyphens: manual; + -ms-hyphens: manual; + -webkit-hyphens: manual; + hyphens: manual; +} + +/* -- hlist styles ---------------------------------------------------------- */ + +table.hlist { + margin: 1em 0; +} + +table.hlist td { + vertical-align: top; +} + +/* -- object description styles --------------------------------------------- */ + +.sig { + font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; +} + +.sig-name, code.descname { + background-color: transparent; + font-weight: bold; +} + +.sig-name { + font-size: 1.1em; +} + +code.descname { + font-size: 1.2em; +} + +.sig-prename, code.descclassname { + background-color: transparent; +} + +.optional { + font-size: 1.3em; +} + +.sig-paren { + font-size: larger; +} + +.sig-param.n { + font-style: italic; +} + +/* C++ specific styling */ + +.sig-inline.c-texpr, +.sig-inline.cpp-texpr { + font-family: unset; +} + +.sig.c .k, .sig.c .kt, +.sig.cpp .k, .sig.cpp .kt { + color: #0033B3; +} + +.sig.c .m, +.sig.cpp .m { + color: #1750EB; +} + +.sig.c .s, .sig.c .sc, +.sig.cpp .s, .sig.cpp .sc { + color: #067D17; +} + + +/* -- other body styles ----------------------------------------------------- */ + +ol.arabic { + list-style: decimal; +} + +ol.loweralpha { + list-style: lower-alpha; +} + +ol.upperalpha { + list-style: upper-alpha; +} + +ol.lowerroman { + list-style: lower-roman; +} + +ol.upperroman { + list-style: upper-roman; +} + +:not(li) > ol > li:first-child > :first-child, +:not(li) > ul > li:first-child > :first-child { + margin-top: 0px; +} + +:not(li) > ol > li:last-child > :last-child, +:not(li) > ul > li:last-child > :last-child { + margin-bottom: 0px; +} + +ol.simple ol p, +ol.simple ul p, +ul.simple ol p, +ul.simple ul p { + margin-top: 0; +} + +ol.simple > li:not(:first-child) > p, +ul.simple > li:not(:first-child) > p { + margin-top: 0; +} + +ol.simple p, +ul.simple p { + margin-bottom: 0; +} + +dl.footnote > dt, +dl.citation > dt { + float: left; + margin-right: 0.5em; +} + +dl.footnote > dd, +dl.citation > dd { + margin-bottom: 0em; +} + +dl.footnote > dd:after, +dl.citation > dd:after { + content: ""; + clear: both; +} + +dl.field-list { + display: grid; + grid-template-columns: fit-content(30%) auto; +} + +dl.field-list > dt { + font-weight: bold; + word-break: break-word; + padding-left: 0.5em; + padding-right: 5px; +} + +dl.field-list > dt:after { + content: ":"; +} + +dl.field-list > dd { + padding-left: 0.5em; + margin-top: 0em; + margin-left: 0em; + margin-bottom: 0em; +} + +dl { + margin-bottom: 15px; +} + +dd > :first-child { + margin-top: 0px; +} + +dd ul, dd table { + margin-bottom: 10px; +} + +dd { + margin-top: 3px; + margin-bottom: 10px; + margin-left: 30px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/_static/check-solid.svg b/_static/check-solid.svg new file mode 100644 index 00000000000..92fad4b5c0b --- /dev/null +++ b/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/_static/clipboard.min.js b/_static/clipboard.min.js new file mode 100644 index 00000000000..54b3c463811 --- /dev/null +++ b/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/_static/copybutton.css b/_static/copybutton.css new file mode 100644 index 00000000000..f1916ec7d1b --- /dev/null +++ b/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/_static/copybutton.js b/_static/copybutton.js new file mode 100644 index 00000000000..2ea7ff3e217 --- /dev/null +++ b/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/_static/copybutton_funcs.js b/_static/copybutton_funcs.js new file mode 100644 index 00000000000..dbe1aaad79c --- /dev/null +++ b/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/_static/css/main.css b/_static/css/main.css new file mode 100644 index 00000000000..4ac01745289 --- /dev/null +++ b/_static/css/main.css @@ -0,0 +1 @@ +@media print,screen and 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+ +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + +/** + * make the code below compatible with browsers without + * an installed firebug like debugger +if (!window.console || !console.firebug) { + var names = ["log", "debug", "info", "warn", "error", "assert", "dir", + "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", + "profile", "profileEnd"]; + window.console = {}; + for (var i = 0; i < names.length; ++i) + window.console[names[i]] = function() {}; +} + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} + +/** + * Small JavaScript module for the documentation. + */ +var Documentation = { + + init : function() { + this.fixFirefoxAnchorBug(); + this.highlightSearchWords(); + this.initIndexTable(); + this.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS : {}, + PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; }, + LOCALE : 'unknown', + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext : function(string) { + var translated = Documentation.TRANSLATIONS[string]; + if (typeof translated === 'undefined') + return string; + return (typeof translated === 'string') ? translated : translated[0]; + }, + + ngettext : function(singular, plural, n) { + var translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated === 'undefined') + return (n == 1) ? singular : plural; + return translated[Documentation.PLURALEXPR(n)]; + }, + + addTranslations : function(catalog) { + for (var key in catalog.messages) + this.TRANSLATIONS[key] = catalog.messages[key]; + this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')'); + this.LOCALE = catalog.locale; + }, + + /** + * add context elements like header anchor links + */ + addContextElements : function() { + $('div[id] > :header:first').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this headline')). + appendTo(this); + }); + $('dt[id]').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this definition')). + appendTo(this); + }); + }, + + /** + * workaround a firefox stupidity + * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075 + */ + fixFirefoxAnchorBug : function() { + if (document.location.hash && $.browser.mozilla) + window.setTimeout(function() { + document.location.href += ''; + }, 10); + }, + + /** + * highlight the search words provided in the url in the text + */ + highlightSearchWords : function() { + var params = $.getQueryParameters(); + var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : []; + if (terms.length) { + var body = $('div.body'); + if (!body.length) { + body = $('body'); + } + window.setTimeout(function() { + $.each(terms, function() { + body.highlightText(this.toLowerCase(), 'highlighted'); + }); + }, 10); + $('') + .appendTo($('#searchbox')); + } + }, + + /** + * init the domain index toggle buttons + */ + initIndexTable : function() { + var togglers = $('img.toggler').click(function() { + var src = $(this).attr('src'); + var idnum = $(this).attr('id').substr(7); + $('tr.cg-' + idnum).toggle(); + if (src.substr(-9) === 'minus.png') + $(this).attr('src', src.substr(0, src.length-9) + 'plus.png'); + else + $(this).attr('src', src.substr(0, src.length-8) + 'minus.png'); + }).css('display', ''); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) { + togglers.click(); + } + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords : function() { + $('#searchbox .highlight-link').fadeOut(300); + $('span.highlighted').removeClass('highlighted'); + var url = new URL(window.location); + url.searchParams.delete('highlight'); + window.history.replaceState({}, '', url); + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar : function() { + $('input[name=q]').first().focus(); + }, + + /** + * make the url absolute + */ + makeURL : function(relativeURL) { + return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL; + }, + + /** + * get the current relative url + */ + getCurrentURL : function() { + var path = document.location.pathname; + var parts = path.split(/\//); + $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() { + if (this === '..') + parts.pop(); + }); + var url = parts.join('/'); + return path.substring(url.lastIndexOf('/') + 1, path.length - 1); + }, + + initOnKeyListeners: function() { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + return; + + $(document).keydown(function(event) { + var activeElementType = document.activeElement.tagName; + // don't navigate when in search box, textarea, dropdown or button + if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT' + && activeElementType !== 'BUTTON') { + if (event.altKey || event.ctrlKey || event.metaKey) + return; + + if (!event.shiftKey) { + switch (event.key) { + case 'ArrowLeft': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var prevHref = $('link[rel="prev"]').prop('href'); + if (prevHref) { + window.location.href = prevHref; + return false; + } + break; + case 'ArrowRight': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var nextHref = $('link[rel="next"]').prop('href'); + if (nextHref) { + window.location.href = nextHref; + return false; + } + break; + case 'Escape': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.hideSearchWords(); + return false; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case '/': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.focusSearchBar(); + return false; + } + } + }); + } +}; + +// quick alias for translations +_ = Documentation.gettext; + +$(document).ready(function() { + Documentation.init(); +}); diff --git a/_static/documentation_options.js b/_static/documentation_options.js new file mode 100644 index 00000000000..724e3825774 --- /dev/null +++ b/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '', + LANGUAGE: 'None', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + ENABLE_SEARCH_SHORTCUTS: true, 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Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2020-05-04T22:49Z + */ +( function( global, factory ) { + + "use strict"; + + if ( typeof module === "object" && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.5.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.5 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2020-03-14 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting or other required elements. + thead: [ 1, "", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px"; + tr.style.height = "1px"; + trChild.style.height = "9px"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = parseInt( trStyle.height ) > 3; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( + dataPriv.get( cur, "events" ) || Object.create( null ) + )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script + if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Contributing to Scylla Operator

+
+

Prerequisites

+

To develop on scylla-operator, your environment must have the following:

+
    +
  1. Go 1.13

    +
      +
    • Make sure GOPATH is set to GOPATH=$HOME/go.

    • +
    +
  2. +
  3. Kustomize v3.1.0

  4. +
  5. kubebuilder v2.3.1

  6. +
  7. Docker

  8. +
  9. Git client installed

  10. +
  11. Github account

  12. +
+

To install all dependencies (Go, kustomize, kubebuilder, dep), simply run:

+
./install-dependencies.sh
+
+
+
+
+

Initial Setup

+
+

Create a Fork

+

From your browser navigate to http://github.com/scylladb/scylla-operator and click the “Fork” button.

+
+
+

Clone Your Fork

+

Open a console window and do the following:

+
# Create the scylla operator repo path
+mkdir -p $GOPATH/src/github.com/scylladb
+
+# Navigate to the local repo path and clone your fork
+cd $GOPATH/src/github.com/scylladb
+
+# Clone your fork, where <user> is your GitHub account name
+git clone https://github.com/<user>/scylla-operator.git
+
+
+
+
+

Add Upstream Remote

+

First you will need to add the upstream remote to your local git:

+
# Add 'upstream' to the list of remotes
+git remote add upstream https://github.com/scylladb/scylla-operator.git
+
+# Verify the remote was added
+git remote -v
+
+
+

Now you should have at least origin and upstream remotes. You can also add other remotes to collaborate with other contributors.

+
+
+
+

Development

+

To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch.

+
+

Building the project

+

You can build the project using the Makefile commands:

+
    +
  • Open the Makefile and change the IMG environment variable to a repository you have access to.

  • +
  • Run make docker-push and wait for the image to be built and uploaded in your repo.

  • +
+
+
+

Create a Branch

+

From a console, create a new branch based on your fork and start working on it:

+
# Ensure all your remotes are up to date with the latest
+git fetch --all
+
+# Create a new branch that is based off upstream master.  Give it a simple, but descriptive name.
+# Generally it will be two to three words separated by dashes and without numbers.
+git checkout -b feature-name upstream/master
+
+
+

Now you are ready to make the changes and commit to your branch.

+
+
+

Updating Your Fork

+

During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to rebase your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean.

+

Whenever you need to update your local repository, you never want to merge. You always will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (git stash save -u "<some description>").

+
git fetch --all
+git rebase upstream/master
+
+
+

Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the Git documentation, it will be well worth it. In a nutshell, rebasing does the following:

+
    +
  • “Unwinds” your local commits. Your local commits are removed temporarily from the history.

  • +
  • The latest changes from upstream are added to the history

  • +
  • Your local commits are re-applied one by one

  • +
  • If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase.

  • +
  • When done rebasing, you will see all of your commits in the history.

  • +
+
+
+
+

Submitting a Pull Request

+

Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream.

+

In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged.

+
+

Commit History

+

To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits.

+
# Inspect your commit history to determine if you need to squash commits
+git log
+
+# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean.
+# In this example, the last 5 commits will be opened in the git rebase tool.
+git rebase -i HEAD~5
+
+
+

Once your commit history is clean, ensure you have based on the latest upstream before you open the PR.

+
+
+

Commit messages

+

Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good!

+

If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed.

+

Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you’ve forgotten everything about what you just did, and you need to get up to speed quickly.

+

If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don’t want to close the associated issue just put #1234 and the change will get linked into the issue.

+

Here is an example of a short commit message:

+
sidecar: log on reconcile loop - fixes #1234
+
+
+

And here is an example of a longer one:

+

+api: now supports host networking (#1234)
+
+The operator CRD now has a "network" property that can be used to
+select host networking as well as setting the apropriate DNS policy.
+
+Fixes #1234
+
+
+
+
+

Submitting

+

Go to the Scylla Operator github to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR.

+

After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/eks.html b/master/eks.html new file mode 100644 index 00000000000..d76e3633929 --- /dev/null +++ b/master/eks.html @@ -0,0 +1,732 @@ + + + + + + + + + + + + + Deploying Scylla on EKS | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on EKS

+

This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won’t work with different machine tiers. +It sets up the kubelets on EKS nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+
+# From inside the examples/eks folder
+cd examples/eks
+./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION"
+
+
+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

EKS Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+CLUSTER_NAME=scylla-demo
+
+
+
+
+

Creating an EKS cluster

+

For this guide, we’ll create an EKS cluster with the following:

+
    +
  • A NodeGroup of 3 i3-2xlarge Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having scylla-clusters toleration.

  • +
+
  - name: scylla-pool
+    instanceType: i3.2xlarge
+    desiredCapacity: 3
+    labels:
+      scylla.scylladb.com/node-type: scylla
+    taints:
+      role: "scylla-clusters:NoSchedule"
+    ssh:
+      allow: true
+    kubeletExtraConfig:
+      cpuManagerPolicy: static
+
+
+
    +
  • A NodeGroup of 4 c4.2xlarge Nodes to deploy cassandra-stress later on. These nodes will only accept pods having cassandra-stress toleration.

  • +
+
  - name: cassandra-stress-pool
+    instanceType: c4.2xlarge
+    desiredCapacity: 4
+    labels:
+      pool: "cassandra-stress-pool"
+    taints:
+      role: "cassandra-stress:NoSchedule"
+    ssh:
+      allow: true
+
+
+
    +
  • A NodeGroup of 1 i3.large Node, where the monitoring stack and operator will be deployed.

  • +
+
  - name: monitoring-pool
+    instanceType: i3.large
+    desiredCapacity: 1
+    labels:
+      pool: "monitoring-pool"
+    ssh:
+      allow: true
+
+
+
+
+
+

Prerequisites

+
+

Installing script third party dependencies

+

Script requires several dependencies:

+
    +
  • eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

  • +
  • kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/

  • +
+
+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting an EKS cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
eksctl delete cluster "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/exposing.html b/master/exposing.html new file mode 100644 index 00000000000..c1cca9f0975 --- /dev/null +++ b/master/exposing.html @@ -0,0 +1,847 @@ + + + + + + + + + + + + + Exposing ScyllaCluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Exposing ScyllaCluster

+

This document explains how ScyllaDB Operator exposes ScyllaClusters in different network setups. +A ScyllaCluster can be exposed in various network configurations, independently to clients and nodes.

+

ScyllaClusters can be only exposed when the ScyllaDB version used version is >=2023.1 ScyllaDB Enterprise or >=5.2 ScyllaDB Open Source.

+
+

Expose Options

+

exposeOptions specifies configuration options for exposing ScyllaCluster’s. +A ScyllaCluster created without any exposeOptions is equivalent to the following:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: ClusterIP
+    broadcastOptions:
+      clients:
+        type: ServiceClusterIP
+      nodes:
+        type: ServiceClusterIP
+
+
+

The following sections cover what every field controls and what the configuration options are.

+
+

Node Service Template

+

nodeService serves as a template for a node-dedicated Service managed by the Scylla Operator for each node within a ScyllaCluster. +The properties of the Services depend on the selected type. +Additionally, there’s an option to define custom annotations, incorporated into each node’s Service, +which might be useful for further tweaking the Service properties or related objects.

+
+

Headless Type

+

For Headless type, Scylla Operator creates a Headless Service with a selector pointing to the particular node in the ScyllaCluster. +Such Service doesn’t provide any additional IP addresses, and the internal DNS record resolves to the PodIP of a node.

+

This type of Service is useful when ScyllaCluster nodes broadcast PodIPs to clients and other nodes.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: Headless
+
+
+
+
+

ClusterIP Type

+

For ClusterIP type, Scylla Operator creates a ClusterIP Service backed by a specific node in the ScyllaCluster.

+

These IP addresses are only routable within the same Kubernetes cluster, so it’s a good fit, if you don’t want to expose them to other networks.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: ClusterIP
+
+
+
+
+

LoadBalancer Type

+

For the LoadBalancer type, Scylla Operator generates a LoadBalancer Service that directs traffic to a specific node within the ScyllaCluster. +On platforms with support for external load balancers, this Service provisions one. +The accessibility of this load balancer’s address depends on the platform and any customizations made; in some cases it may be reachable from the internal network or public Internet.

+

LoadBalancer Service is a superset of ClusterIP Service, implying that each LoadBalancer Service also contains an allocated ClusterIP. +They can be configured using the following fields, which propagate to every node Service:

+
    +
  • externalTrafficPolicy

  • +
  • internalTrafficPolicy

  • +
  • loadBalancerClass

  • +
  • allocateLoadBalancerNodePorts

  • +
+

Check Kubernetes Service documentation to learn more about these options.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: LoadBalancer
+     loadBalancerClass: my-custom-load-balancer-class
+
+
+
+
+
+
+

Broadcast Options

+

Broadcast options control what is the source of the address being broadcasted to clients and nodes. +It’s configured independently for clients and nodes because you may want to expose these two types of traffic on different networks. +Using different networks can help manage costs, reliability, latency, security policies or other metrics you care about.

+
+

PodIP Type

+

Address broadcasted to clients/nodes is taken from Pod. +By default, the address is taken from Pod’s status.PodIP field. +Because a Pod can use multiple address, you may want to provide source options by specifying podIP.source.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    broadcastOptions:
+       clients:
+         type: PodIP
+         podIP:
+           source: Status
+
+
+
+
+

ServiceClusterIP Type

+

Address broadcasted to clients or nodes is taken from spec.ClusterIP field of a node’s dedicated Service.

+

In order to configure it, the nodeService template must specify a Service having a ClusterIP assigned.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    broadcastOptions:
+       clients:
+         type: ServiceClusterIP
+
+
+
+
+

ServiceLoadBalancerIngress Type

+

Address broadcasted to clients/nodes is taken from the node dedicated Service, from status.ingress[0].ipAddress or status.ingress[0].hostname field.

+

In order to configure it, the nodeService template must specify the LoadBalancer Service.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    broadcastOptions:
+       clients:
+         type: ServiceLoadBalancerIngress
+         podIP:
+           source: Status
+
+
+
+
+
+
+

Deployment Examples

+

The following section contains several specific examples of various network scenarios and explains how nodes and clients communicate with one another.

+
+

In-cluster only

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: ClusterIP
+    broadcastOptions:
+      clients:
+        type: ServiceClusterIP
+      nodes:
+        type: ServiceClusterIP
+
+
+

Both client and nodes are deployed within the same Kubernetes cluster. +They talk through ClusterIP addresses taken from the Service. +Because ClusterIP Services are only routable within the same Kubernetes cluster, this cluster won’t be reachable from outside.

+

ClusterIPs

+
+
+

In-cluster node-to-node, VPC clients-to-nodes

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: ClusterIP
+    broadcastOptions:
+      clients:
+        type: PodIP
+      nodes:
+        type: ServiceClusterIP
+
+
+

In this scenario, we assume that the Pod IP subnet is routable within a VPC. +Clients within the VPC network can communicate directly with ScyllaCluster nodes using PodIPs. +Nodes communicate with each other exclusively within the same Kubernetes cluster.

+

PodIPs

+
+
+

Multi VPC

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: Headless
+    broadcastOptions:
+      clients:
+        type: PodIP
+      nodes:
+        type: PodIP
+
+
+

In this scenario, we set up two separate Kubernetes clusters in distinct VPCs. +These VPCs are interconnected to facilitate inter-VPC connectivity. +We operate on the assumption that the Pod IP subnet is routable within each VPC.

+

Both ScyllaClusters use the same exposeOptions, nodes broadcast their Pod IP addresses, enabling them to establish connections with one another. +****Check other documentation pages to know how to connect two ScyllaClusters into one logical cluster.

+

Clients, whether deployed within the same Kubernetes cluster or within a VPC, have the capability to reach nodes using their Pod IPs. +Since there is no requirement for any address other than the Pod IP, the Headless service type is sufficient.

+

MultiVPC

+
+
+

Internet

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: LoadBalancer
+    broadcastOptions:
+      clients:
+        type: ServiceLoadBalancerIngress
+      nodes:
+        type: ClusterIP 
+
+
+

We assume that a Kubernetes cluster has been deployed in a cloud provider environment that supports external load balancers. +By specifying the LoadBalancer type in the nodeService template, the Scylla Operator generates a dedicated LB Service for each node. +The cloud provider then establishes an external load balancer with an internet-accessible address. +ScyllaDB nodes broadcast this external address to clients, enabling drivers to connect and discover other nodes. +Since all ScyllaDB nodes reside within the same Kubernetes cluster, there is no need to route traffic through the internet. +Consequently, the nodes are configured to communicate via ClusterIP, which is also accessible within LoadBalancer Services.

+

Internet

+
+

Other more complex scenarios can be built upon these simple ones.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/generic.html b/master/generic.html new file mode 100644 index 00000000000..b883ec8abb3 --- /dev/null +++ b/master/generic.html @@ -0,0 +1,956 @@ + + + + + + + + + + + + + Deploying Scylla on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on a Kubernetes Cluster

+

This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment:

+ +
+

Prerequisites

+ +
+
+

Running locally

+

Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and Minikube makes it a breeze.

+

We need to give minikube a little bit more resources than default so start minikube like this:

+
minikube start --cpus=6
+
+
+

Then make kubectl aware of this local installation like this:

+
eval $(minikube docker-env)
+
+
+
+
+

Download Scylla Operator

+

In this guide you will be using the examples and manifests from Scylla Operator repository, so start off by cloning it to your local machine.

+
git clone git@github.com:scylladb/scylla-operator.git
+cd scylla-operator
+
+
+
+
+

Deploy Cert Manager

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

This will install Cert Manager to provision a self-signed certificate.

+

Once it’s deployed, wait until Cert Manager is ready:

+
kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io
+kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook
+
+
+
+
+

Deploy Scylla Operator

+

Deploy the Scylla Operator using the following commands:

+
kubectl apply -f examples/common/operator.yaml
+
+
+

This will install the operator in namespace scylla-operator. +Wait until it’s ready:

+
kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
+kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
+
+
+

If you want to check the logs of the operator you can do so with:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+
+
+

Create and Initialize a Scylla Cluster

+

Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the clusters.scylla.scylladb.com resource. +Some of that resource’s values are configurable, so feel free to browse cluster.yaml and tweak the settings to your liking. +Full details for all the configuration options can be found in the Scylla Cluster CRD documentation.

+

When you are ready to create a Scylla cluster, simply run:

+
kubectl create -f examples/generic/cluster.yaml
+
+
+

We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment.

+
kubectl -n scylla get ScyllaCluster
+
+
+

Checking the pods that are created is as easy as:

+
kubectl -n scylla get pods
+
+
+

The output should be something like:

+
NAME                                    READY   STATUS    RESTARTS   AGE
+simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          9m49s
+simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          7m43s
+simple-cluster-us-east-1-us-east-1a-2   2/2     Running   0          6m46s
+
+
+

It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER as specified in cluster.yaml.

+

In the above example we have the following properties:

+
    +
  • CLUSTER_NAME: simple-cluster

  • +
  • DATACENTER_NAME: us-east-1

  • +
  • RACK_NAME: us-east-1a

  • +
  • INSTANCE_NUMBER: An automatically generated number attached to the pod name.

  • +
+

We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want.

+

To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in cluster.yaml:

+
kubectl -n scylla get pod -l app=scylla
+
+
+

You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run:

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+

Checking the logs of the running scylla instances can be done like this:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla
+
+
+
+

Configure host networking

+

To squeeze the most out of your deployment it is sometimes necessary to employ host networking. +To enable this the CRD allows for specifying a network parameter as such:

+
version: 4.0.0
+  agentVersion: 2.0.2
+  cpuset: true
+  network:
+    hostNetworking: true
+
+
+

This will result in hosts network to be used for the Scylla Stateful Set deployment.

+
+
+

Configure container kernel parameters

+

Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property sysctls that is a list of the desired key-value pairs to set.

+

For example: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls tofs.aio-max-nr=N.

+
spec:
+  sysctls:
+  - "fs.aio-max-nr=2097152"
+
+
+
+
+

Deploying Alternator

+

The operator is also capable of deploying Alternator instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the cluster.yaml file from this:

+
spec:
+  version: 4.0.0
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

to this:

+
spec:
+  version: 4.0.0
+  alternator:
+    port: 8000
+    writeIsolation: only_rmw_uses_lwt
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

You can specify whichever port you want.

+

You must provide desired write isolation, supported values are: “always”, “forbid_rmw”, “only_rmw_uses_lwt”. +Difference between those isolation levels can be found in Scylla Alternator documentation.

+

Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alternator cluster.

+
+
+
+

Accessing the Database

+
    +
  • From kubectl:

  • +
+

To get a cqlsh shell in your new Cluster:

+
kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh
+> DESCRIBE KEYSPACES;
+
+
+
    +
  • From inside a Pod:

  • +
+

When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service’s name follows the convention <cluster-name>-client. +You can see this Service in your cluster by running:

+
kubectl -n scylla describe service simple-cluster-client
+
+
+

Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here’s an example using the Python Driver:

+
from cassandra.cluster import Cluster
+
+cluster = Cluster(['simple-cluster-client.scylla.svc'])
+session = cluster.connect()
+
+
+

If you are running the Alternator you can access the API on the port you specified using plain http.

+
+
+

Configure Scylla

+

The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called scylla.yaml that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration.

+
    +
  • Create a ConfigMap the default name that the operator uses is scylla-config:

  • +
+
kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml
+
+
+
    +
  • Wait for the mount to propagate and then restart the cluster:

  • +
+
kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a
+
+
+
    +
  • The new config should be applied automatically by the operator, check the logs to be sure.

  • +
+

Configuring cassandra-rackdc.properties is done by adding the file to the same mount as scylla.yaml.

+
kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f -
+
+
+

The operator will then apply the overridable properties prefer_local and dc_suffix if they are available in the provided mounted file.

+
+

Note

+

If you want to enable authentication, you first need to adjust system_auth keyspace replication factor to the number of nodes in the datacenter via cqlsh. It allows you to ensure that the user’s information is kept highly available for the cluster. If system_auth is not equal to the number of nodes and a node fails, the user whose information is on that node will be denied access. +For production environments only use NetworkTopologyStrategy.

+
kubectl -n scylla exec -it pods/simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -e "ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'us-east-1' : <replication_factor>};"
+
+
+

You can read more about enabling authentication in the Enable authentication section of ScyllaDB’s documentation.

+
+
+
+

Configure Scylla Manager Agent

+

The operator creates a second container for each scylla instance that runs Scylla Manager Agent. +This container serves as a sidecar and it’s the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups.

+

To configure the agent you just create a new secret called scylla-agent-config-secret and populate it with the contents in the scylla-manager-agent.yaml file like this:

+
kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml
+
+
+

See Scylla Manager Agent configuration for a complete reference of the Scylla Manager agent config file.

+
+

Scylla Manager Agent auth token

+

Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it’s empty. +To check which value is being used, decode content of <cluster-name>-auth-token secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart.

+
+
+
+

Set up monitoring

+

To set up monitoring using Prometheus and Grafana follow this guide.

+
+
+

Scale a ScyllaCluster

+

The operator supports adding new nodes to existing racks, adding new racks to the cluster, as well as removing both single nodes and entire racks. To introduce the changes, edit the cluster with:

+
kubectl -n scylla edit scyllaclusters.scylla.scylladb.com/simple-cluster
+
+
+
    +
  • To modify the number of nodes in a rack, update the members field of the selected rack to a desired value.

  • +
  • To add a new rack, append it to the .spec.datacenter.racks list. Remember to choose a unique rack name for the new rack.

  • +
  • To remove a rack, first scale it down to zero nodes, and then remove it from .spec.datacenter.racks list.

  • +
+

Having edited and saved the yaml, you can check your cluster’s Status and Events to retrieve information about what’s happening:

+
kubectl -n scylla describe scyllaclusters.scylla.scylladb.com/simple-cluster
+
+
+
+

Note

+

If you have configured ScyllaDB with authenticator set to PasswordAuthenticator, you need to manually configure the replication factor of the system_auth keyspace with every scaling operation.

+
kubectl -n scylla exec -it pods/simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -u <username> -p <password> -e "ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'us-east-1' : <new_replication_factor>};"
+
+
+

It is recommended to set system_auth replication factor to the number of nodes in each datacenter.

+
+
+
+

Benchmark with cassandra-stress

+

After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster.

+
+

Because cassandra-stress doesn’t scale well to multiple cores, we use multiple jobs with a small core count for each

+
+
# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each.
+# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec.
+hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000
+kubectl apply -f scripts/cassandra-stress.yaml
+
+
+

Make sure you set the proper arguments in case you have altered things such as name or namespace.

+
./hack/cass-stress-gen.py -h
+usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT]
+                          [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR]
+
+Generate cassandra-stress job templates for Kubernetes.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --num-jobs NUM_JOBS   number of Kubernetes jobs to generate - defaults to 1
+  --name NAME           name of the generated yaml file - defaults to cassandra-stress
+  --namespace NAMESPACE
+                        namespace of the cassandra-stress jobs - defaults to "default"
+  --scylla-version SCYLLA_VERSION
+                        version of scylla server to use for cassandra-stress - defaults to 4.0.0
+  --host HOST           ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc
+  --cpu CPU             number of cpus that will be used for each job - defaults to 1
+  --memory MEMORY       memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu
+  --ops OPS             number of operations for each job - defaults to 10000000
+  --threads THREADS     number of threads used for each job - defaults to 50 * cpu
+  --limit LIMIT         rate limit for each job - defaults to no rate-limiting
+  --connections-per-host CONNECTIONS_PER_HOST
+                        number of connections per host - defaults to number of cpus
+  --print-to-stdout     print to stdout instead of writing to a file
+  --nodeselector NODESELECTOR
+                        nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla
+
+
+

While the benchmark is running, open up Grafana and take a look at the monitoring metrics.

+

After the Jobs finish, clean them up with:

+
kubectl delete -f scripts/cassandra-stress.yaml
+
+
+
+
+

Clean Up

+

To clean up all resources associated with this walk-through, you can run the commands below.

+

NOTE: this will destroy your database and delete all of its associated data.

+
kubectl delete -f examples/generic/cluster.yaml
+kubectl delete -f examples/common/operator.yaml
+kubectl delete -f examples/common/cert-manager.yaml
+
+
+
+
+

Troubleshooting

+

If the cluster does not come up, the first step would be to examine the operator’s logs:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+

If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/genindex.html b/master/genindex.html new file mode 100644 index 00000000000..686dd8440be --- /dev/null +++ b/master/genindex.html @@ -0,0 +1,561 @@ + + + + + + + + + + + + + Index | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

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+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
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+ + + + + +
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+ +
+ +
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+ + + + + + + \ No newline at end of file diff --git a/master/gke.html b/master/gke.html new file mode 100644 index 00000000000..decc9f34cbb --- /dev/null +++ b/master/gke.html @@ -0,0 +1,770 @@ + + + + + + + + + + + + + Deploying Scylla on GKE | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on GKE

+

This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+GCP_USER=$(gcloud config list account --format "value(core.account)")
+GCP_PROJECT=$(gcloud config list project --format "value(core.project)")
+GCP_ZONE=us-west1-b
+
+# From inside the examples/gke folder
+cd examples/gke
+./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE"
+
+# Example:
+# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b
+
+
+

:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region.

+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

Google Kubernetes Engine Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
GCP_USER=$( gcloud config list account --format "value(core.account)" )
+GCP_PROJECT=$( gcloud config list project --format "value(core.project)" )
+GCP_REGION=us-west1
+GCP_ZONE=us-west1-b
+CLUSTER_NAME=scylla-demo
+CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" )
+
+
+
+
+

Creating a GKE cluster

+

First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called systemconfig.yaml with the following content:

+
kubeletConfig:
+  cpuManagerPolicy: static
+
+
+

Then we’ll create a GKE cluster with the following:

+
    +
  1. A NodePool of 2 n1-standard-8 Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes.

    +
    gcloud container \
    +clusters create "${CLUSTER_NAME}" \
    +--cluster-version "${CLUSTER_VERSION}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-8" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--image-type "UBUNTU_CONTAINERD" \
    +--system-config-from-file=systemconfig.yaml \
    +--enable-stackdriver-kubernetes \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  2. +
  3. A NodePool of 2 n1-standard-32 Nodes to deploy cassandra-stress later on.

    +
    gcloud container --project "${GCP_PROJECT}" \
    +node-pools create "cassandra-stress-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--zone "${GCP_ZONE}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--node-taints role=cassandra-stress:NoSchedule \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  4. +
  5. A NodePool of 4 n1-standard-32 Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as raw block devices. It is important to disable autoupgrade and autorepair. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it’s better to handle upgrades manually, with more control over the process and error handling.

    +
    gcloud container \
    +node-pools create "scylla-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "4" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--local-nvme-ssd-block count="8" \
    +--node-taints role=scylla-clusters:NoSchedule \
    +--node-labels scylla.scylladb.com/node-type=scylla \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  6. +
+
+
+

Setting Yourself as cluster-admin

+
+

(By default GKE doesn’t give you the necessary RBAC permissions)

+
+

Get the credentials for your new cluster

+
gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}"
+
+
+

Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission container.clusterRoleBindings.create. +The easiest way to obtain this permission is to enable the Kubernetes Engine Admin role for your user in the GCP IAM web interface.

+
kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}"
+
+
+
+
+
+

Prerequisites

+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Deploy Scylla cluster

+

In order for the example to work you need to modify the cluster definition in the following way:

+
sed -i "s/<gcp_region>/${GCP_REGION}/g;s/<gcp_zone>/${GCP_ZONE}/g" examples/gke/cluster.yaml
+
+
+

This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created.

+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to install the operator and launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting a GKE cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/helm.html b/master/helm.html new file mode 100644 index 00000000000..b0eac3005d1 --- /dev/null +++ b/master/helm.html @@ -0,0 +1,926 @@ + + + + + + + + + + + + + Deploying Scylla stack using Helm Charts | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla stack using Helm Charts

+

In this example we will install Scylla stack on Kubernetes. This includes the following components:

+
    +
  • Scylla Operator

  • +
  • Scylla Manager

  • +
  • Scylla

  • +
+

We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator.

+
+

Prerequisites

+
    +
  • Kubernetes 1.16+

  • +
  • Helm 3+

  • +
+
+
+

TL;DR

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+kubectl apply -f examples/common/cert-manager.yaml 
+helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator
+helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager
+helm install scylla scylla/scylla --create-namespace --namespace scylla
+
+
+
+
+

Deploy Cert Manager

+

This step is optional if you want to use your own certificate. +If you don’t have one, make sure to not disable autogeneration using Scylla Operator Helm Chart.

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

Once it’s deployed, wait until all Cert Manager pods will enter into Running state:

+
kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s
+
+
+
+
+

Helm Chart repository

+

To install Scylla Helm Chart repository execute the following commands:

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+
+
+

Then you can search through repository, it should contain at least three Helm charts:

+
helm search repo scylla
+NAME                   CHART VERSION   APP VERSION     DESCRIPTION                                       
+scylla/scylla          1.0.1           v1.0.1          Scylla is a close-to-the-hardware rewrite of Ca...
+scylla/scylla-manager  1.0.1           v1.0.1          Scylla Manager automates database operations.     
+scylla/scylla-operator 1.0.1           v1.0.1          Scylla Operator is a Kubernetes Operator for ma...
+
+
+

All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit.

+
+
+

Scylla Operator Chart

+

This chart is very simple, most interesting customizable fields are image, resources and webhook. +All others can be looked up in Chart source in Scylla Operator repository.

+
+

image

+

Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change pullPolicy if default one does not +fullfill your needs. In Kubernetes documentation you +can read more about different pull policies.

+

Image URL will be composed based on these fields in follwing pattern: +repository/scylla-operator:tag

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+
+
+

resources

+

You can customize how much resources will be allocated for Operator pods via resource field:

+
resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 32Mi
+
+
+

To read more about resource specification, follow Kubernetes documentation.

+
+
+

webhook

+

Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate.

+

createSelfSignedCertificate specifies whether a self-signed certificate should be created using Cert Manager +certificateSecretName: name of a secret containing custom certificate.

+
webhook:
+  createSelfSignedCertificate: true
+  certificateSecretName: ""
+
+
+
+
+

Customization

+

You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values.

+

You can find an example in Scylla Operator repository under examples/helm/values.operator.yaml

+
+
+

Installation

+

To deploy Scylla Operator using customized values file execute the following:

+
helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator
+
+
+
+
+
+

Scylla Helm Chart

+

Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it.

+
+

Customization

+

Versions of images used in the cluster can be set via scyllaImage and agentImage

+
scyllaImage:
+  repository: scylladb/scylla
+  tag: 4.3.0
+
+agentImage:
+  repository: scylladb/scylla-manager-agent
+  tag: 2.2.1
+
+
+

A minimal Scylla cluster can be expressed as:

+
datacenter: us-east-1
+racks:
+- name: us-east-1b
+  members: 2
+  storage:
+    capacity: 5G
+  resources:
+    limits:
+      cpu: 1
+      memory: 1Gi
+    requests:
+      cpu: 1
+      memory: 1Gi
+
+
+

Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory.

+

For other customizable fields, please refer to ScyllaCluster CRD definition. +CRD Rack Spec and Helm Chart Rack should have the same fields.

+
+
+

Installation

+

To deploy Scylla cluster using customzied values file execute the following command:

+
helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla
+
+
+

Scylla Operator will provision this cluster on your K8s environment.

+
+
+
+

Scylla Manager Helm Chart

+

Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster.

+

To read more about Scylla Manager see Manager guide.

+
+

Scylla Manager

+

To set version of used Scylla Manager you can use image field:

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: 2.2.1
+
+
+

To control how many resources are allocated for Scylla Manager use resource field:

+
resources:
+  limits:
+    cpu: 500m
+    memory: 500Mi
+  requests:
+    cpu: 500m
+    memory: 500Mi
+
+
+
+
+

Scylla Manager Controller

+

Similarly Scylla Manager Controller image can be customized:

+
controllerImage:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+

And allocated resources:

+
controllerResources:
+  limits:
+    cpu: 100m
+    memory: 30Mi
+  requests:
+    cpu: 100m
+    memory: 20Mi
+
+
+
+
+

Scylla

+

To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It’s definition should land as a scylla field.

+
+
+

Customization

+

All others customizable fields can be looked up in Chart source in Scylla Operator repository.

+
+
+

Installation

+

To deploy Scylla Manager using customized values file execute the following command:

+
helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager
+
+
+
+
+
+

Results

+

Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn’t it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces.

+

Scylla Operator:

+
$ kubectl -n scylla-operator get all
+
+NAME                                   READY   STATUS    RESTARTS   AGE
+pod/scylla-operator-5dbcb54f5c-vjm4m   1/1     Running   0          51s
+pod/scylla-operator-5dbcb54f5c-wfjbw   1/1     Running   0          51s
+
+NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
+service/scylla-operator-webhook   ClusterIP   10.105.207.130   <none>        443/TCP   51s
+
+NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-operator   2/2     2            2           51s
+
+NAME                                         DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-operator-5dbcb54f5c   2         2         2       51s
+
+
+

Operator is running!

+

Scylla Manager:

+
$ kubectl -n scylla-manager get all 
+
+NAME                                             READY   STATUS    RESTARTS   AGE
+pod/scylla-manager-669db64dd-bcm4v               1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-drbth   1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-rhwqx   1/1     Running   0          89s
+
+NAME                            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
+service/scylla-manager          ClusterIP   10.105.231.53   <none>        80/TCP,5090/TCP     89s
+service/scylla-manager-client   ClusterIP   None            <none>        9180/TCP,5090/TCP   89s
+
+NAME                                        READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-manager              1/1     1            1           89s
+deployment.apps/scylla-manager-controller   2/2     2            2           89s
+
+NAME                                                   DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-manager-669db64dd               1         1         1       89s
+replicaset.apps/scylla-manager-controller-844ccc56c4   2         2         2       89s
+
+
+

Good to go, ready to serve!

+

Scylla itself:

+
$ kubectl -n scylla get all        
+
+NAME                                READY   STATUS    RESTARTS   AGE
+pod/scylla-us-east-1-us-east-1b-0   2/2     Running   0          5m58s
+pod/scylla-us-east-1-us-east-1b-1   2/2     Running   0          4m29s
+
+NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
+service/scylla-client                   ClusterIP   None           <none>        9180/TCP,5090/TCP                                                 5m59s
+service/scylla-us-east-1-us-east-1b-0   ClusterIP   10.43.149.92   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   5m58s
+service/scylla-us-east-1-us-east-1b-1   ClusterIP   10.43.49.0     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   4m29s
+
+NAME                                           READY   AGE
+statefulset.apps/scylla-us-east-1-us-east-1b   2/2     5m59s
+
+
+

Two running nodes, exactly what we were asking for.

+
+
+

Monitoring

+

To spin up a Prometheus monitoring refer to monitoring guide.

+

Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor:

+
serviceMonitor:
+  create: false
+
+
+

Change create to true and update your current deployment using:

+
helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml
+
+
+

Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics.

+
+
+

Cleanup

+

To remove these applications you can simply uninstall them using Helm CLI:

+
helm uninstall scylla -n scylla
+helm uninstall scylla-manager -n scylla-manager
+helm uninstall scylla-operator -n scylla-operator
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/index.html b/master/index.html new file mode 100644 index 00000000000..071a1c85621 --- /dev/null +++ b/master/index.html @@ -0,0 +1,605 @@ + + + + + + + + + + + + + Scylla Operator Documentation | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Operator Documentation

+
+
+

Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades.

+_images/logo.png +

For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University.

+

scylla-operator is a Kubernetes Operator for managing Scylla clusters.

+

Currently it supports:

+
    +
  • Deploying multi-zone clusters

  • +
  • Scaling up or adding new racks

  • +
  • Scaling down

  • +
  • Monitoring with Prometheus and Grafana

  • +
  • Integration with Scylla Manager

  • +
  • Dead node replacement

  • +
  • Version Upgrade

  • +
  • Backup

  • +
  • Repairs

  • +
  • Autohealing

  • +
+

Choose a topic to begin:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/known-issues.html b/master/known-issues.html new file mode 100644 index 00000000000..678115a64c9 --- /dev/null +++ b/master/known-issues.html @@ -0,0 +1,602 @@ + + + + + + + + + + + + + Known issues | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
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+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Known issues

+
+

Scylla Manager does not boot up on Minikube

+

If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for TRUNCATE queries.

+
+
+

TRUNCATE queries does not work on Minikube

+

The TRUNCATE queries requires hairpinning to be enabled. On minikube this is disabled by default.

+

To fix it execute the following command:

+
minikube ssh sudo ip link set docker0 promisc on
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/manager.html b/master/manager.html new file mode 100644 index 00000000000..9a802fb07f7 --- /dev/null +++ b/master/manager.html @@ -0,0 +1,813 @@ + + + + + + + + + + + + + Deploying Scylla Manager on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla Manager on a Kubernetes Cluster

+

Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way.

+

Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager Proprietary Software License Agreement for details.

+
+

Prerequisites

+ +
+
+

Architecture

+

Scylla Manager in K8s consist of:

+
    +
  • Dedicated Scylla Cluster

    +

    Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace.

    +
  • +
  • Scylla Manager Controller

    +

    Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states.

    +
      +
    1. What user wants - task definition in CRD.

    2. +
    3. What Controller registered - Task name to Task ID mapping - CRD status.

    4. +
    5. Scylla Manager task listing - internal state of Scylla Manager.

    6. +
    +

    When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling.

    +
  • +
  • Scylla Manager

    +

    Regular Scylla Manager, the same used in cloud and bare metal deployments.

    +
  • +
+
+
+

Deploy Scylla Manager

+

Deploy the Scylla Manager using the following commands:

+
kubectl apply -f examples/common/manager.yaml
+
+
+

This will install the Scylla Manager in the scylla-manager namespace. +You can check if the Scylla Manager is up and running with:

+
kubectl -n scylla-manager get pods
+NAME                                               READY   STATUS    RESTARTS   AGE
+scylla-manager-cluster-manager-dc-manager-rack-0   2/2     Running   0          37m
+scylla-manager-controller-0                        1/1     Running   0          28m
+scylla-manager-scylla-manager-7bd9f968b9-w25jw     1/1     Running   0          37m
+
+
+

As you can see there are three pods:

+
    +
  • scylla-manager-cluster-manager-dc-manager-rack-0 - is a single node Scylla cluster.

  • +
  • scylla-manager-controller-0 - Scylla Manager Controller.

  • +
  • scylla-manager-scylla-manager-7bd9f968b9-w25jw - Scylla Manager.

  • +
+

To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command:

+
kubectl -n scylla-manager logs scylla-manager-controller-0
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+
+
+

To check logs of Scylla Manager itself, use following command:

+
kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+
+
+

If there are no errors in the logs, let’s spin a Scylla Cluster.

+
+
+

Cluster registration

+

When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster.

+

See generic tutorial to spawn your cluster.

+

Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager.

+

Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager.

+
kubectl -n scylla describe Cluster
+
+[...]
+Status:
+ Manager Id:  d1d532cd-49f2-4c97-9263-25126532803b
+ Racks:
+   us-east-1a:
+     Members:        3
+     Ready Members:  3
+     Version:        4.0.0
+
+
+

You can use this ID to talk to Scylla Manager using sctool CLI installed in Scylla Manager Pod. +You can also use Cluster name in namespace/cluster-name format.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator).

+

In this task listing we can see CQL and REST healthchecks.

+
+
+

Task scheduling

+

You can either define tasks prior Cluster creation, or for existing Cluster. +Let’s edit already running cluster definition to add repair and backup task.

+
kubectl -n scylla edit Cluster simple-cluster
+
+
+

Add following task definition to Cluster spec:

+
  repairs:
+    - name: "users repair"
+      keyspace: ["users"]
+      interval: "1d"
+  backups:
+    - name: "weekly backup"
+      location: ["s3:cluster-backups"]
+      retention: 3
+      interval: "7d"
+    - name: "daily backup"
+      location: ["s3:cluster-backups"]
+      retention: 7
+      interval: "1d"
+
+
+

For full task definition configuration consult Scylla Cluster CRD.

+

Note: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up.

+

Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372                 │ -L s3:cluster-backups  --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d)  │ NEW    │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a                 │                                      │ 23 Sep 20 14:38:42 CEST        │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly.

+

To check progress of run you can use following command:

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a
+Status:         RUNNING
+Start time:     23 Sep 20 14:38:42 UTC
+Duration:       13s
+Progress:       2.69%
+Datacenters:
+  - us-east-1
++--------------------+-------+
+| system_auth        | 8.06% |
+| system_distributed | 0.00% |
+| system_traces      | 0.00% |
++--------------------+-------+
+
+
+

Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing.

+
+
+

Clean Up

+

To clean up all resources associated with Scylla Manager, you can run the commands below.

+

NOTE: this will destroy your Scylla Manager database and delete all of its associated data.

+
kubectl delete -f examples/common/manager.yaml
+
+
+
+
+

Troubleshooting

+

Manager is not running

+

If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs:

+
kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller
+kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

My task wasn’t scheduled

+

If your task wasn’t scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs.

+

Example:

+

Following status describes error when backup task cannot be scheduled, due to lack of access to bucket:

+
Status:
+  Backups:
+    Error:     create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug"
+    Id:        00000000-0000-0000-0000-000000000000
+    Interval:  0
+    Location:
+      s3:manager-test
+    Name:         adhoc backup
+    Num Retries:  3
+    Retention:    3
+    Start Date:   now
+  Manager Id:     2b9dbe8c-9daa-4703-a66d-c29f63a917c8
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.0.0
+
+
+

Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status.

+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/migration.html b/master/migration.html new file mode 100644 index 00000000000..ef37cd1e153 --- /dev/null +++ b/master/migration.html @@ -0,0 +1,748 @@ + + + + + + + + + + + + + Version migrations | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Version migrations

+
+

v0.3.0 -> v1.0.0 migration

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common kind +which is easier to disambiguate (ScyllaCluster). +This change is backward incompatible, which means manual migration is needed.

+

This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the upgrade guide where full deletion is requested, this procedure shouldn’t cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn’t run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first.

+

Read the whole procedure and make sure you understand what is going on before executing any of the commands!

+

In case of any issues or questions regarding this procedure, you’re welcomed on our Scylla Users Slack +on #kubernetes channel.

+
+
+

Procedure

+
    +
  1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +

    All below commands will use scylla namespace and simple-cluster as a cluster name.

    +
  2. +
  3. Make sure you’re using v1.0.0 tag:

    +
    git checkout v1.0.0
    +
    +
    +
  4. +
  5. Upgrade your cert-manager to v1.0.0. If you installed it from a static file from this repo, simply execute the following:

    +
     kubectl apply -f examples/common/cert-manager.yaml
    +
    +
    +

    If your cert-manager was installed in another way, follow official instructions on cert-manager website.

    +
  6. +
  7. examples/common/operator.yaml file contains multiple resources. Extract only CustomResourceDefinition to separate file.

  8. +
  9. Install v1.0.0 CRD definition from file created in the previous step:

    +
    kubectl apply -f examples/common/crd.yaml
    +
    +
    +
  10. +
  11. Save your existing simple-cluster Cluster definition to a file:

    +
    kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml
    +
    +
    +
  12. +
  13. Migrate Kind and ApiVersion to new values using:

    +
    sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml
    +sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml
    +
    +
    +
  14. +
  15. Install migrated CRD instance

    +
    kubectl apply -f existing-cluster.yaml
    +
    +
    +

    At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator.

    +
  16. +
  17. Get UUID of newly created ScyllaCluster resource:

    +
    kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}"
    +
    +12a3678d-8511-4c9c-8a48-fa78d3992694
    +
    +
    +

    Save output UUID somewhere, it will be referred as <new-cluster-uid> in commands below.

    +

    Depending on your shell, you might get additional ‘%’ sign at the end of UUID, make sure to remove it!

    +
  18. +
  19. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters:

    +
    kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]'
    +
    +
    +

    Amend role name according to your cluster name, it should look like <scylla-cluster-name>-member.

    +
  20. +
  21. Get a list of all Services associated with your cluster. First get list of all services:

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          109m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   108m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   106m
    +
    +
    +
  22. +
  23. For each service, change its ownerReference to point to new CRD instance:

    +
     kubectl -n scylla patch svc <cluster-svc-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-svc-name> with Service name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  24. +
  25. Get a list of all Services again to see if none was deleted. Check also “Age” column, it shouldn’t be lower than previous result.

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          110m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   110m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   107m
    +
    +
    +
  26. +
  27. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  28. +
  29. For each StatefulSet from previous step, change its ownerReference to point to new CRD instance.

    +
     kubectl -n scylla patch sts <cluster-sts-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  30. +
  31. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. +Checkout v0.3.0 version, and remove Scylla Operator, and old CRD:

    +
     git checkout v0.3.0
    + kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  32. +
  33. Checkout v1.0.0, and install upgraded Scylla Operator:

    +
     git checkout v1.0.0
    + kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  34. +
  35. Wait until Scylla Operator boots up:

    +
     kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s
    +
    +
    +
  36. +
  37. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  38. +
  39. For each StatefulSet from previous step, change its sidecar container image to v1.0.0, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one.

    +
    kubectl -n scylla patch sts <cluster-sts> --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +kubectl -n scylla rollout status sts <cluster-sts>
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name.

    +
  40. +
  41. If you’re using Scylla Manager, bump Scylla Manager Controller image to v1.0.0

    +
     kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +
    +
    +
  42. +
  43. Your Scylla cluster is now migrated to v1.0.0.

  44. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/monitoring.html b/master/monitoring.html new file mode 100644 index 00000000000..c3ba5f37aaa --- /dev/null +++ b/master/monitoring.html @@ -0,0 +1,795 @@ + + + + + + + + + + + + + Monitoring | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Monitoring

+

Scylla Operator 1.8 introduced a new API resource ScyllaDBMonitoring, allowing users to deploy a managed monitoring +setup for their Scylla Clusters.

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: ScyllaDBMonitoring
+metadata:
+  name: example
+spec:
+  type: Platform
+  endpointsSelector:
+    matchLabels:
+      app.kubernetes.io/name: scylla
+      scylla-operator.scylladb.com/scylla-service-type: identity
+      scylla/cluster: replace-with-your-scyllacluster-name
+  components:
+    prometheus:
+      storage:
+        volumeClaimTemplate:
+          spec:
+            resources:
+              requests:
+                storage: 1Gi
+    grafana:
+      exposeOptions:
+        webInterface:
+          ingress:
+            ingressClassName: haproxy
+            dnsDomains:
+            - test-grafana.test.svc.cluster.local
+            annotations:
+              haproxy-ingress.github.io/ssl-passthrough: "true"
+
+
+

For details, refer to the below command:

+
$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1
+
+
+
+

Deploy managed monitoring

+

Note: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions.

+
+

Requirements

+

Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see:

+ +

The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps.

+
+

Deploy Prometheus Operator

+

Deploy Prometheus Operator using kubectl:

+
$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator
+
+
+
+
Wait for Prometheus Operator to roll out
+
$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator
+deployment "prometheus-operator" successfully rolled out
+
+
+
+
+
+

Deploy HAProxy Ingress

+

Deploy HAProxy Ingress using kubectl:

+
$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress
+
+
+
+
Wait for HAProxy Ingress to roll out
+
$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress
+deployment "haproxy-ingress" successfully rolled out
+
+
+
+
+
+
+

Deploy ScyllaDBMonitoring

+

First, update the endpointsSelector in examples/monitoring/v1alpha1/scylladbmonitoring.yaml with a label +matching your ScyllaCluster instance name.

+

Deploy the monitoring setup using kubectl:

+
$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml
+
+
+

Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources.

+
+

Wait for ScyllaDBMonitoring to roll out

+
$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+
+
+
+

Wait for Prometheus to roll out

+
$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example
+statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb...
+
+
+
+
+

Wait for Grafana to roll out

+
$ kubectl rollout status --timeout=5m deployments.apps/example-grafana
+deployment "example-grafana" successfully rolled out
+
+
+
+
+
+

Accessing Grafana

+

For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller’s IP address but most clients and tools allow setting the SNI field manually.

+
+
+

Prerequisites

+

To access Grafana, you first need to collect the serving CA and the credentials.

+
$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )"
+$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )"
+$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )"
+
+
+
+
+

Connecting through Ingress using a resolvable domain

+

In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like *.app.mydomain pointing to the Ingress controller’s external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller’s A record.

+

Note: The ScyllaDBMonitoring example creates an Ingress object with test-grafana.test.svc.cluster.local DNS domain that you should adjust to your domain. Below examples use example-grafana.apps.mydomain.

+

Note: To test a resolvable domain from your machine without creating DNS records, you can adjust /etc/hosts or similar.

+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+

Connecting through Ingress using an unresolvable domain

+

To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller’s IP that can be resolved externally. Again, there are many ways to do so beyond the below examples.

+

Unless stated otherwise, we assume your Ingress is running on port 443.

+
$ INGRESS_PORT=443
+
+
+
+

Variants

+
+
Ingress ExternalIP
+

When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address.

+
$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )"
+
+
+
+
+
Ingress NodePort
+

NodePort is slightly less convenient, but it’s available in development clusters as well.

+
$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )"
+$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )"
+
+
+
+
+
Connection
+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/nodeoperations/automatic-cleanup.html b/master/nodeoperations/automatic-cleanup.html new file mode 100644 index 00000000000..b61116e47db --- /dev/null +++ b/master/nodeoperations/automatic-cleanup.html @@ -0,0 +1,587 @@ + + + + + + + + + + + + + Automatic cleanup and replacement in case when k8s node is lost | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Automatic cleanup and replacement in case when k8s node is lost

+

In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity.

+

When automaticOrphanedNodeCleanup flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/nodeoperations/index.html b/master/nodeoperations/index.html new file mode 100644 index 00000000000..e528edba9dd --- /dev/null +++ b/master/nodeoperations/index.html @@ -0,0 +1,587 @@ + + + + + + + + + + + + + Node operations using Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Node operations using Scylla Operator

+
+
+

Choose a topic:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/nodeoperations/maintenance-mode.html b/master/nodeoperations/maintenance-mode.html new file mode 100644 index 00000000000..c403b9ecdbd --- /dev/null +++ b/master/nodeoperations/maintenance-mode.html @@ -0,0 +1,596 @@ + + + + + + + + + + + + + Maintenance mode | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Maintenance mode

+

When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive.

+

This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again.

+

To enable maintenance mode add scylla/node-maintenance label to service in front of Scylla Pod.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance=""
+
+
+

To disable, simply remove this label from service.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance-
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/nodeoperations/replace-node.html b/master/nodeoperations/replace-node.html new file mode 100644 index 00000000000..6945528351e --- /dev/null +++ b/master/nodeoperations/replace-node.html @@ -0,0 +1,670 @@ + + + + + + + + + + + + + Replacing a Scylla node | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+
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+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Replacing a Scylla node

+
+

Replacing a dead node

+

In the case of a host failure, it may not be possible to bring back the node to life.

+

Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth).

+

This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time

+

Procedure

+
    +
  1. Verify the status of the node using nodetool status command, the node with status DN is down and need to be replaced

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.63 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +DN  10.43.43.51    74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  2. +
  3. Identify service which is bound to down node by checking IP address

    +
    kubectl -n scylla get svc
    +NAME                                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                           AGE
    +simple-cluster-client                   ClusterIP   None            <none>        9180/TCP                                                          3h12m
    +simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.231.189   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h12m
    +simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.125.110   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h11m
    +simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.43.51     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h5m
    +
    +
    +
  4. +
  5. Drain node which we would like to replace using. This command may delete your data from local disks attached to given node!

    +
    kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data
    +
    +
    +

    Pod which will be replaced should enter the Pending state

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h21m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h19m
    +simple-cluster-us-east-1-us-east-1a-2   0/2     Pending   0          8m14s
    +
    +
    +
  6. +
  7. To being node replacing, add scylla/replace="" label to service bound to pod we are replacing.

    +
    kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace=""
    +
    +
    +

    Your failed Pod should be recreated on available k8s node

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h27m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h25m
    +simple-cluster-us-east-1-us-east-1a-2   1/2     Running   0          9s
    +
    +
    +

    Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. +After bootstraping is over, your new Pod should be ready to go. +Old one shouldn’t be no longer visible in nodetool status

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.62 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +UN  10.43.191.172  74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  8. +
  9. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. +You can use Scylla Manager to run the repair.

  10. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/nodeoperations/restore.html b/master/nodeoperations/restore.html new file mode 100644 index 00000000000..87be7f08b31 --- /dev/null +++ b/master/nodeoperations/restore.html @@ -0,0 +1,658 @@ + + + + + + + + + + + + + Restore from backup | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Restore from backup

+

This procedure will describe how to restore from backup taken using Scylla Manager to a fresh empty cluster of any size.

+

First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod.

+
sctool backup list -c <CLUSTER_ID> --all-clusters -L <BACKUP_LOCATION>
+
+
+

Where:

+
    +
  • CLUSTER_ID - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status.

  • +
  • BACKUP_LOCATION - is a location where backup is stored. For example, for bucket called backups stored in AWS S3, location is s3:backups.

  • +
+
sctool backup list -c simple-cluster --all-clusters -L s3:backups
+Snapshots:
+  - sm_20201227144037UTC (409MiB)
+  - sm_20201228145917UTC (434MiB)
+Keyspaces:
+  - users (9 tables)
+  - system_auth (2 tables)
+  - system_distributed (3 tables)
+  - system_schema (13 tables)
+  - system_traces (5 tables)
+
+
+

To get the list of files use:

+
sctool backup files -c <CLUSTER_ID> -L <BACKUP_LOCATION> -T <SNAPSHOT_TAG>
+
+
+

Where:

+
    +
  • SNAPSHOT_TAG - name of snapshot you want to restore.

  • +
+

Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example:

+
s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz      ./
+
+
+

To download this archive you can use AWS CLI tool aws s3 cp.

+

This archive contains a single CQL file for each keyspace in the backup.

+
tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz
+-rw------- 0/0           12671 2020-12-28 13:17 users.cql
+-rw------- 0/0            2216 2020-12-28 13:17 system_auth.cql
+-rw------- 0/0             921 2020-12-28 13:17 system_distributed.cql
+-rw------- 0/0           12567 2020-12-28 13:17 system_schema.cql
+-rw------- 0/0            4113 2020-12-28 13:17 system_traces.cql
+
+
+

Extract this archive and copy each schema file to one of the cluster Pods by:

+
kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla
+
+
+

To import schema simply execute:

+
kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql
+
+
+

Once the schema is recreated we can proceed to downloading data files.

+

First let’s save a list of snapshot files to file called backup_files.out:

+
kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out
+
+
+

We will be using sstableloader to restore data. sstableloader needs a specific directory structure to work namely: <keyspace>/<table>/<contents> +To create this directory structure and download all the files execute these commands:

+
mkdir snapshot
+cd snapshot
+# Create temporary directory structure.
+cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p
+# Download snapshot files.
+cat ../backup_files.out | xargs -n2 aws s3 cp
+
+
+

To load data into cluster pass cluster address to sstableloader together with path to data files and credentials:

+
sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password <password>
+
+
+

Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/nodeoperations/scylla-upgrade.html b/master/nodeoperations/scylla-upgrade.html new file mode 100644 index 00000000000..2fdd7a88c9b --- /dev/null +++ b/master/nodeoperations/scylla-upgrade.html @@ -0,0 +1,669 @@ + + + + + + + + + + + + + Upgrading version of Scylla | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrading version of Scylla

+

To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition.

+

In this example cluster will be upgraded to version 4.4.5.

+
kubectl -n scylla patch ScyllaCluster simple-cluster  -p '{"spec":{"version": "4.4.5"}}' --type=merge
+
+
+

Operator supports two types of version upgrades:

+
    +
  1. Patch upgrade

  2. +
  3. Generic upgrade

  4. +
+

Patch upgrade

+

Patch upgrade is executed when only patch version change is detected according to semantic versioning format. +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one.

+

Example: 4.0.0 -> 4.0.1

+

Generic upgrade

+

Generic upgrades are executed for the non patch version changes.

+

Example: 4.0.0 -> 2020.1.0 or 4.0.0 -> 4.1.0 or even 4.0.0 -> nightly

+

User can observe current state of upgrade in ScyllaCluster status.

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+[...]
+Status:
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.1.9
+  Upgrade:
+    Current Node:         simple-cluster-us-east-1-us-east-1a-2
+    Current Rack:         us-east-1a
+    Data Snapshot Tag:    so_data_20201228135002UTC
+    From Version:         4.1.9
+    State:                validate_upgrade
+    System Snapshot Tag:  so_system_20201228135002UTC
+    To Version:           4.2.2
+
+
+

Each upgrade begins with taking a snapshot of system and system_schema keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under System Snapshot Tag.

+

Before nodes in rack are upgraded, underlying StatefulSet is changed to use OnDelete UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed.

+

When a node is being upgraded, maintenance mode is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under Data Snapshot Tag and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node.

+

Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version.

+

Current state of upgrade can be traced using Current Node, Current Rack and State status fields.

+
    +
  • Current Node shows which node is being upgraded.

  • +
  • Current Rack displays which rack is being upgraded.

  • +
  • State contain information at which stage upgrade is.

  • +
+

State can have following values:

+
    +
  • begin_upgrade - upgrade is starting

  • +
  • check_schema_agreement - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried.

  • +
  • create_system_backup - system keyspaces snapshot is being taken

  • +
  • find_next_rack - Operator finds out which rack must be upgraded next, decision is saved in Current Rack

  • +
  • upgrade_image_in_pod_spec - Image and UpgradeStrategy is upgraded in underlying StatefulSet

  • +
  • find_next_node - Operator finds out which node must be upgraded next, decision is saved in Current Node

  • +
  • enable_maintenance_mode - maintenance mode is being enabled

  • +
  • drain_node - node is being drained

  • +
  • backup_data - snapshot of data keyspaces is being taken

  • +
  • disable_maintenance_mode - maintenance mode is being disabled

  • +
  • delete_pod - Scylla Pod is being deleted

  • +
  • validate_upgrade - Operator validates if new pod enters Ready state and if Scylla version is upgraded

  • +
  • clear_data_backup - snapshot of data keyspaces is being removed

  • +
  • clear_system_backup - snapshot of system keyspaces is being removed

  • +
  • restore_upgrade_strategy - restore UpgradeStrategy in underlying StatefulSet

  • +
  • finish_upgrade - upgrade cleanup

  • +
+

Recovering from upgrade failure

+

Upgrade may get stuck on validate_upgrade stage. This happens when Scylla Pod refuses to properly boot up.

+

To continue with upgrade, first turn off operator by scaling Operator replicas to zero:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0
+
+
+

Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names.

+

Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2
+
+
+

Operator should continue upgrade process from where it left off.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/objects.inv b/master/objects.inv new file mode 100644 index 00000000000..d3cd1d5c902 --- /dev/null +++ b/master/objects.inv @@ -0,0 +1,6 @@ +# Sphinx inventory version 2 +# Project: Scylla Operator +# Version: +# The remainder of this file is compressed using zlib. +xڅTn0+"6Hk$h4QK& QRBٞ`l*WQ¦ +^EJ'*p0?&'.`e>)ZܕDHg,jvFB݋ 95EPO-G%ɏ(VD. x;u(ǚ7r1}Mǵ5l,kTEnD@ꍚxFNfdFϙpޱ?XBI/j"f+c.MHg:y@;Z-rfZTѿ wV[4B"'72&CԂqa:~ Ax`f2v]ч_O*/}#"q;֡/^%ᗈxi}QTSI͹ihbM~ּ L!T/:gUj'Cg=pg]< ~7PbK:ܓHIoaeݲ؄eJ?bSqr^5Vt/ \ No newline at end of file diff --git a/master/performance.html b/master/performance.html new file mode 100644 index 00000000000..74a04b1dfd7 --- /dev/null +++ b/master/performance.html @@ -0,0 +1,671 @@ + + + + + + + + + + + + + Performance tuning | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Performance tuning

+

Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes.

+
+

Node tuning

+

Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning.

+

Below example NodeConfig tunes nodes having scylla.scylladb.com/node-type=scylla label:

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: NodeConfig
+metadata:
+ name: cluster
+spec:
+ placement:
+   nodeSelector:
+     scylla.scylladb.com/node-type: scylla
+
+
+

For more details about new CRD use:

+
kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1
+
+
+

For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more.

+

Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node.

+

Scylla works most efficently when it’s pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares.

+

On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others.
We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively.

+

Tuning resources are created in a special namespace called scylla-operator-node-tuning.

+

The tuning is applied only to pods with Guaranteed QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions.

+
+
+

Kubernetes tuning

+

By default, the kubelet uses the CFS quota to enforce pod CPU limits.
When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static.

+

Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider.

+

Only pods within the Guaranteed QoS class) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won’t be part of the shared pool.

+

In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class:

+
    +
  • resource request and limits must be equal or only limits have to be provided

  • +
  • agentResources must be provided and their requests and limits must be equal, or only limits have to be provided

  • +
+

An example of such a ScyllaCluster that receives a Guaranteed QoS class is below:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: guaranteed-cluster
+  namespace: scylla
+spec:
+  version: 4.5.1
+  agentVersion: 2.5.2
+  datacenter:
+    name: us-east-1
+    racks:
+    - name: us-east-1a
+      members: 3
+      storage:
+        capacity: 500Gi
+      agentResources:
+        requests:
+          cpu: 1
+          memory: 1G
+        limits:
+          cpu: 1
+          memory: 1G
+      resources:
+        requests:
+          cpu: 4
+          memory: 16G
+        limits:
+          cpu: 4
+          memory: 16G
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/releases.html b/master/releases.html new file mode 100644 index 00000000000..32356879dee --- /dev/null +++ b/master/releases.html @@ -0,0 +1,850 @@ + + + + + + + + + + + + + Releases | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Releases

+
+

Schedule

+

We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates.

+ + + + + + + + + + + + + + + +
ReleaseCode freezeGeneral availability
1.112023-10-022023-10-16
+
+

Supported releases

+

We support the latest 2 releases of the operator to give everyone time to upgrade.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
ReleaseGeneral availabilitySupport ends
1.102023-08-25Release of 1.12
1.92023-07-04Release of 1.11
1.82023-01-252023-08-25
1.72022-01-272023-07-04
1.62021-12-032023-01-25
1.52021-09-162022-01-27
1.42021-08-102021-12-03
1.32021-06-172021-09-16
1.22021-05-062021-08-10
1.12021-03-222021-06-17
1.02021-01-212021-05-06
+

Backport policy

+

Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers.

+
+
+
+

CI/CD

+

We use GitHub actions for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite.

+
+

Automated promotions

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Git referenceTypeContainer image
masterbranchdocker.io/scylladb/scylla-operator:latest
vX.Ybranchdocker.io/scylladb/scylla-operator:X.Y
vX.Y.Ztagdocker.io/scylladb/scylla-operator:X.Y.Z
vX.Y.Z-alpha.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-alpha.N
vX.Y.Z-beta.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-beta.N
vX.Y.Z-rc.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-rc.N
+
+

Generally available

+

GA images aren’t build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate.

+
+
+
+

Support matrix

+

Support matrix table shows the version requirements for a particular scylla-operator version. Be sure to match these requirements, otherwise some functionality will not work.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
v1.10v1.9v1.8v1.7v1.6v1.5v1.4v1.3v1.2v1.1v1.0
Kubernetes>=1.21>=1.21>=1.21>=1.20 && <1.25>=1.19.10 && <1.25>=1.19.10>=1.19.10>=1.19>=1.19>=1.11>=1.11
CRI APIv1v1v1alpha2v1alpha2v1alpha2
Scylla OS>=5.0>=5.0>=5.0>=4.3>=4.3>=4.3>=4.3>=4.2>=4.2>=4.0>=4.0
Scylla Enterprise>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2020.1>=2020.1>=2020.1>=2020.1
Scylla Manager>=2.6>=2.6>=2.6>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2
Scylla Monitoring>=4.0>=4.0>=4.0>=3.0>=3.0>=1.0>=1.0>=1.0>=1.0>=1.0>=1.0
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/master/scylla-cluster-crd.html b/master/scylla-cluster-crd.html new file mode 100644 index 00000000000..0b9d8a55a2b --- /dev/null +++ b/master/scylla-cluster-crd.html @@ -0,0 +1,810 @@ + + + + + + + + + + + + + Scylla Cluster CRD | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Cluster CRD

+

Scylla database clusters can be created and configured using the clusters.scylla.scylladb.com custom resource definition (CRD).

+

Please refer to the the user guide walk-through for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD.

+
+

Sample

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: simple-cluster
+  namespace: scylla
+spec:
+  version: 2.3.1
+  repository: scylladb/scylla
+  developerMode: true
+  cpuset: false
+  automaticOrphanedNodeCleanup: true
+  repairs:
+  - name: "weekly us-east-1 repair"
+    intensity: "2"
+    interval: "7d"
+    dc: ["us-east-1"]
+  backups:
+  - name: "daily users backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "1d"
+    keyspace: ["users"]
+  - name: "weekly full cluster backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "7d"
+  datacenter:
+    name: us-east-1
+    racks:
+      - name: us-east-1a
+        members: 3
+        storage:
+          capacity: 500G
+          storageClassName: local-raid-disks
+        resources:
+          requests:
+            cpu: 8
+            memory: 32Gi
+          limits:
+            cpu: 8
+            memory: 32Gi
+        placement:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: failure-domain.beta.kubernetes.io/region
+                    operator: In
+                    values:
+                      - us-east-1
+                  - key: failure-domain.beta.kubernetes.io/zone
+                    operator: In
+                    values:
+                      - us-east-1a
+          tolerations:
+            - key: role
+              operator: Equal
+              value: scylla-clusters
+              effect: NoSchedule
+
+
+
+
+

Settings Explanation

+
+

Cluster Settings

+
    +
  • version: The version of Scylla to use. It is used as the image tag to pull.

  • +
  • agentVersion: The version of Scylla Manager Agent to use. It is used as the image tag to pull.

  • +
  • repository: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • agentRepository: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • developerMode: Optional field. If it’s true, then Scylla is started in developer mode. This setting is for shared test/dev environments.

  • +
  • cpuset: Optional field. If it’s true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the static cpu policy and only specify limits in resources.

  • +
  • automaticOrphanedNodeCleanup: Optional field. Controls if automatic orphan node cleanup should be performed.

  • +
  • alternator: Optional field. Defines Alternator configuration.

    +
      +
    • port: Port on which to bind to Alternator API.

    • +
    • writeIsolation: required Desired write isolation.

    • +
    +
  • +
  • genericUpgrade: Optional field. Defines GenericUpgrade configuration.

    +
      +
    • failureStrategy: specifies which logic is executed when upgrade failure happens. Currently only Retry is supported.

    • +
    • pollInterval: specifies how often upgrade logic polls on state updates. +Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect +overall time spent during upgrade.

    • +
    +
  • +
  • datacenter: Datacenter definition.

  • +
  • sysctls: Optional field. Sysctl properties to be applied during initialization.

  • +
  • scyllaArgs: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it.

  • +
  • network: Optional field. Allows to customize network parameters.

    +
      +
    • hostNetworking: controls if host networking should be enabled.

    • +
    • dnsPolicy: controls Scylla Pod DNS Policy. See details.

    • +
    +
  • +
  • repairs: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
  • backups: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
+

In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups.

+
+
+

Scylla Manager settings

+

Tasks are scheduled only when Scylla Manager is deployed in K8s cluster.

+

Repairs:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. Task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. The number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1", "!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • failFast - Optional field. Stop repair on first error.

  • +
  • intensity - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. +If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). +Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. +Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. +For Scylla clusters that do not support row-level repair, intensity can be a decimal between (0,1). +In that case it specifies percent of shards that can be repaired in parallel on a repair master node. +For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. +Intensity is a number passed as string due to lack of support for float values in k8s controller runtime

  • +
  • parallel - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). +Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. +The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. +The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace", "!keyspace.table_prefix_*"] +used to include or exclude keyspaces from repair.

  • +
  • smallTableThreshold - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units [B, MiB, GiB, TiB] (default "1GiB").

  • +
+

Backups:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - Optional field. Specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. the number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1","!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace","!keyspace.table_prefix_*"] used to include or exclude keyspaces from backup.

  • +
  • location - Optional field. A list of backup locations in the format [<dc>:]<provider>:<name> ex. s3:my-bucket. +The <dc>: part is optional and is only needed when different datacenters are being used to upload data to different locations. +<name> Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are s3 and gcs.

  • +
  • rateLimit - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format [<dc>:]<limit>. +The <dc>: part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100).

  • +
  • retention - Optional field. The number of backups which are to be stored (default 3).

  • +
  • snapshotParallel - Optional field. A list of snapshot parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set, the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
  • uploadParallel - Optional field. A list of upload parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
+
+
+

Datacenter Settings

+
    +
  • name: Name of the datacenter. Usually, a datacenter corresponds to a region.

  • +
  • racks: List of racks for the specific datacenter.

  • +
+
+
+

Rack Settings

+
    +
  • name: Name of the rack. Usually, a rack corresponds to an availability zone.

  • +
  • members: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don’t call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node).

  • +
  • storage: Defines the specs of the underlying storage.

    +
      +
    • capacity: Capacity of the PersistentVolume to request.

    • +
    • storageClassName: Optional field. StorageClass of PersistentVolume to request.

    • +
    +
  • +
  • resources: Defines the CPU and RAM resources for the Scylla Pods.

    +
      +
    • requests: The minimum amount of resources needed to run a Scylla container.

      +
        +
      • cpu: CPU requests.

      • +
      • memory: RAM requests.

      • +
      +
    • +
    • limits: The maximum amount of resources that can be used by a Scylla container.

      +
        +
      • cpu: CPU limits.

      • +
      • memory: RAM limits.

      • +
      +
    • +
    +
  • +
  • agentResources: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See resources for details.

  • +
  • volumes: Optional field. Defines volumes available in Scylla Pod. See details.

  • +
  • volumeMounts: Optional field. Defines which volumes will be attached to Scylla container.

  • +
  • agentVolumeMounts: Optional field. Defines which volumes will be attached to Agent container.

  • +
  • scyllaConfig: Optional field. name of custom config map which will be merged with Scylla config.

  • +
  • scyllaAgentConfig: Optional field. name of custom secret which will be merged with Scylla Manager Agent config.

  • +
  • placement: Optional field. Defines the placement of Scylla Pods. Has the following subfields:

    + +
  • +
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
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Caution

+

+ + You're viewing documentation for an unstable version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrade of Scylla Operator

+

This page describes Scylla Operator upgrade procedures.
There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps.

+
+

Upgrade via Helm

+

Helm doesn’t support managing CustomResourceDefinition resources (#5871, #7735)
These are only created on first install and never updated. In order to update them, users have to do it manually.

+

Replace <release_name> with the name of your Helm release for Scylla Operator and replace <version> with the version number you want to install:

+
    +
  1. Make sure Helm chart repository is up-to-date:

    +
    helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable
    +helm repo update
    +
    +
    +
  2. +
  3. Update CRD resources. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    tmpdir=$( mktemp -d ) \
    +  && helm pull scylla-operator/scylla-operator --version <version> --untar --untardir "${tmpdir}" \
    +  && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \
    +  | xargs kubectl apply
    +
    +
    +
  4. +
  5. Update Scylla Operator

    +
    helm upgrade --version <version> <release_name> scylla-operator/scylla-operator
    +
    +
    +
  6. +
+
+
+

Upgrade via kubectl

+

Replace <version> with the version number you want to install:

+
    +
  1. Checkout source code of version you want to use:

    +
    git checkout <version>
    +
    +
    +
  2. +
  3. Manifests use rolling minor version tag, you may want to pin it to specific version:

    +
    find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:<version>^g"
    +
    +
    +
  4. +
  5. Update Scylla Operator. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    kubectl apply -f deploy/operator
    +
    +
    +
  6. +
+
+
+
+

v1.2.0 -> v1.3.0

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.3.0:

    +
    git checkout v1.3.0
    +
    +
    +
  2. +
  3. Update Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  4. +
  5. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  6. +
+
+
+

v1.1.0 -> v1.2.0

+

1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones.

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.2.0:

    +
    git checkout v1.2.0
    +
    +
    +
  2. +
  3. Remove old scylla operator namespace - in our case it’s called scylla-operator-system:

    +
    kubectl delete namespace scylla-operator-system --wait=true
    +
    +
    +
  4. +
  5. Remove old webhooks:

    +
    kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration
    +kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration
    +
    +
    +
  6. +
  7. Install Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  8. +
  9. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  10. +
+
+
+

v1.0.0 -> v1.1.0

+

During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected.

+
    +
  1. Get name of StatefulSet managing Scylla Operator

    +
    kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager"
    +
    +NAME                                 READY   AGE
    +scylla-operator-controller-manager   1/1     95m
    +
    +
    +
  2. +
  3. Change probes and used container image by applying following patch:

    +
    spec:
    +  template:
    +    spec:
    +      containers:
    +      - name: manager
    +        image: docker.io/scylladb/scylla-operator:1.1.0
    +        livenessProbe:
    +          httpGet:
    +            path: /healthz
    +            port: 8080
    +            scheme: HTTP
    +        readinessProbe:
    +          $retainKeys:
    +          - httpGet
    +          httpGet:
    +            path: /readyz
    +            port: 8080
    +            scheme: HTTP
    +
    +
    +

    To apply above patch save it to file (operator-patch.yaml for example) and apply to Operator StatefulSet:

    +
    kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)"
    +
    +
    +
  4. +
+
+
+

v0.3.0 -> v1.0.0

+

Note: There’s an experimental migration procedure available here.

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common +kind which is easier to disambiguate. (ScyllaCluster). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide.

+
    +
  1. Get list of existing Scylla clusters

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +
  2. +
  3. Delete each one of them

    +
    kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster
    +
    +
    +
  4. +
  5. Make sure you’re on v0.3.0 branch

    +
    git checkout v0.3.0
    +
    +
    +
  6. +
  7. Delete existing CRD and Operator

    +
    kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  8. +
  9. Checkout v1.0.0 version

    +
    git checkout v1.0.0
    +
    +
    +
  10. +
  11. Install new CRD and Scylla Operator

    +
    kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  12. +
  13. Migrate your existing Scylla Cluster definition. Change apiVersion and kind from:

    +
    apiVersion: scylla.scylladb.com/v1alpha1
    +kind: Cluster
    +
    +
    +

    to:

    +
    apiVersion: scylla.scylladb.com/v1
    +kind: ScyllaCluster
    +
    +
    +
  14. +
  15. Once your cluster definition is ready, use kubectl apply to install fresh Scylla cluster.

  16. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/.buildinfo b/stable/.buildinfo new file mode 100644 index 00000000000..aba51a32231 --- /dev/null +++ b/stable/.buildinfo @@ -0,0 +1,4 @@ +# Sphinx build info version 1 +# This file hashes the configuration used when building these files. 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file mode 100644 index 00000000000..d0d2c7cecee --- /dev/null +++ b/stable/404.html @@ -0,0 +1,31 @@ + + + + + + + + + ScyllaDB + + + + + + + + + + + +
+

404

+

The ScyllaDB monster ate your page!

+

+ Home +

+
+ + + \ No newline at end of file diff --git a/stable/CNAME b/stable/CNAME new file mode 100644 index 00000000000..12aae904168 --- /dev/null +++ b/stable/CNAME @@ -0,0 +1 @@ +operator.docs.scylladb.com \ No newline at end of file diff --git a/stable/_images/logo.png b/stable/_images/logo.png new file mode 100644 index 00000000000..5bbfedad2ac Binary files /dev/null and b/stable/_images/logo.png differ diff --git a/stable/_sources/contributing.md.txt b/stable/_sources/contributing.md.txt new file mode 100644 index 00000000000..da5fc078732 --- /dev/null +++ b/stable/_sources/contributing.md.txt @@ -0,0 +1,155 @@ +# Contributing to Scylla Operator + +## Prerequisites + +To develop on scylla-operator, your environment must have the following: + +1. [Go 1.13](https://golang.org/dl/) + * Make sure [GOPATH](https://github.com/golang/go/wiki/SettingGOPATH) is set to `GOPATH=$HOME/go`. +2. [Kustomize v3.1.0](https://github.com/kubernetes-sigs/kustomize/releases/tag/v3.1.0) +3. [kubebuilder v2.3.1](https://github.com/kubernetes-sigs/kubebuilder/releases/tag/v2.3.1) +4. [Docker](https://docs.docker.com/install/) +5. Git client installed +6. Github account + +To install all dependencies (Go, kustomize, kubebuilder, dep), simply run: +```bash +./install-dependencies.sh +``` + +## Initial Setup + +### Create a Fork + +From your browser navigate to [http://github.com/scylladb/scylla-operator](http://github.com/scylladb/scylla-operator) and click the "Fork" button. + +### Clone Your Fork + +Open a console window and do the following: + +```bash +# Create the scylla operator repo path +mkdir -p $GOPATH/src/github.com/scylladb + +# Navigate to the local repo path and clone your fork +cd $GOPATH/src/github.com/scylladb + +# Clone your fork, where is your GitHub account name +git clone https://github.com//scylla-operator.git +``` + +### Add Upstream Remote + +First you will need to add the upstream remote to your local git: +```bash +# Add 'upstream' to the list of remotes +git remote add upstream https://github.com/scylladb/scylla-operator.git + +# Verify the remote was added +git remote -v +``` +Now you should have at least `origin` and `upstream` remotes. You can also add other remotes to collaborate with other contributors. + +## Development + +To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch. + +### Building the project + +You can build the project using the Makefile commands: +* Open the Makefile and change the `IMG` environment variable to a repository you have access to. +* Run `make docker-push` and wait for the image to be built and uploaded in your repo. + +### Create a Branch + +From a console, create a new branch based on your fork and start working on it: + +```bash +# Ensure all your remotes are up to date with the latest +git fetch --all + +# Create a new branch that is based off upstream master. Give it a simple, but descriptive name. +# Generally it will be two to three words separated by dashes and without numbers. +git checkout -b feature-name upstream/master +``` + +Now you are ready to make the changes and commit to your branch. + +### Updating Your Fork + +During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to `rebase` your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean. + +Whenever you need to update your local repository, you never want to merge. You **always** will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (`git stash save -u ""`). + +```bash +git fetch --all +git rebase upstream/master +``` + +Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the [Git documentation](https://git-scm.com/docs/git-rebase), it will be well worth it. In a nutshell, rebasing does the following: +- "Unwinds" your local commits. Your local commits are removed temporarily from the history. +- The latest changes from upstream are added to the history +- Your local commits are re-applied one by one +- If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase. +- When done rebasing, you will see all of your commits in the history. + +## Submitting a Pull Request + +Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream. + +In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged. + +### Commit History + +To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits. + +```bash +# Inspect your commit history to determine if you need to squash commits +git log + +# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean. +# In this example, the last 5 commits will be opened in the git rebase tool. +git rebase -i HEAD~5 +``` + +Once your commit history is clean, ensure you have based on the [latest upstream](#updating-your-fork) before you open the PR. + +### Commit messages + +Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good! + +If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed. + +Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you've forgotten everything about what you just did, and you need to get up to speed quickly. + +If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don't want to close the associated issue just put #1234 and the change will get linked into the issue. + +Here is an example of a short commit message: + +``` +sidecar: log on reconcile loop - fixes #1234 +``` + +And here is an example of a longer one: +``` + +api: now supports host networking (#1234) + +The operator CRD now has a "network" property that can be used to +select host networking as well as setting the apropriate DNS policy. + +Fixes #1234 +``` + +### Submitting + +Go to the [Scylla Operator github](https://www.github.com/scylladb/scylla-operator) to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR. + +After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically. diff --git a/stable/_sources/eks.md.txt b/stable/_sources/eks.md.txt new file mode 100644 index 00000000000..ecfe0f0d1bb --- /dev/null +++ b/stable/_sources/eks.md.txt @@ -0,0 +1,125 @@ +# Deploying Scylla on EKS + +This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won't work with different machine tiers. +It sets up the kubelets on EKS nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c + +# From inside the examples/eks folder +cd examples/eks +./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION" +``` + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### EKS Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c +CLUSTER_NAME=scylla-demo +``` + +#### Creating an EKS cluster + +For this guide, we'll create an EKS cluster with the following: + +* A NodeGroup of 3 `i3-2xlarge` Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having `scylla-clusters` toleration. + +``` + - name: scylla-pool + instanceType: i3.2xlarge + desiredCapacity: 3 + labels: + scylla.scylladb.com/node-type: scylla + taints: + role: "scylla-clusters:NoSchedule" + ssh: + allow: true + kubeletExtraConfig: + cpuManagerPolicy: static +``` + +* A NodeGroup of 4 `c4.2xlarge` Nodes to deploy `cassandra-stress` later on. These nodes will only accept pods having `cassandra-stress` toleration. + +``` + - name: cassandra-stress-pool + instanceType: c4.2xlarge + desiredCapacity: 4 + labels: + pool: "cassandra-stress-pool" + taints: + role: "cassandra-stress:NoSchedule" + ssh: + allow: true +``` + +* A NodeGroup of 1 `i3.large` Node, where the monitoring stack and operator will be deployed. +``` + - name: monitoring-pool + instanceType: i3.large + desiredCapacity: 1 + labels: + pool: "monitoring-pool" + ssh: + allow: true +``` + +### Prerequisites + +#### Installing script third party dependencies + +Script requires several dependencies: +- eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html +- kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/ + +#### Setting up nodes for ScyllaDB + +ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you'll first need to form a RAID array from those disks. +`NodeConfig` performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in [Performance tuning](performance.md) section of ScyllaDB Operator's documentation. + +Deploy `NodeConfig` to let it take care of the above operations: +``` +kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml +``` + +#### Deploying Local Volume Provisioner + +Afterwards, deploy ScyllaDB's [Local Volume Provisioner](https://github.com/scylladb/k8s-local-volume-provisioner), capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays. +``` +kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/ +kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml +``` + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting an EKS cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +eksctl delete cluster "${CLUSTER_NAME}" +``` diff --git a/stable/_sources/generic.md.txt b/stable/_sources/generic.md.txt new file mode 100644 index 00000000000..8a999e4d9d8 --- /dev/null +++ b/stable/_sources/generic.md.txt @@ -0,0 +1,375 @@ +# Deploying Scylla on a Kubernetes Cluster + +This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment: + +* [GKE](gke.md) + +## Prerequisites + +* A Kubernetes cluster +* A [Storage Class](https://kubernetes.io/docs/concepts/storage/storage-classes/) to provision [PersistentVolumes](https://kubernetes.io/docs/concepts/storage/persistent-volumes/). +* Helm 3 installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) if you need to install it. + Make sure that you enable the [stable repository](https://github.com/helm/charts#how-do-i-enable-the-stable-repository-for-helm-3) + +## Running locally + +Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and [Minikube](https://minikube.sigs.k8s.io/docs/) makes it a breeze. + +We need to give minikube a little bit more resources than default so start minikube like this: +```console +minikube start --cpus=6 +``` + +Then make kubectl aware of this local installation like this: +```console +eval $(minikube docker-env) +``` + +## Download Scylla Operator +In this guide you will be using the examples and manifests from [Scylla Operator repository](https://github.com/scylladb/scylla-operator), so start off by cloning it to your local machine. +```console +git clone git@github.com:scylladb/scylla-operator.git +cd scylla-operator +``` + +## Deploy Cert Manager +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` +This will install Cert Manager to provision a self-signed certificate. + +Once it's deployed, wait until Cert Manager is ready: + +```console +kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io +kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook +``` + +## Deploy Scylla Operator + +Deploy the Scylla Operator using the following commands: + +```console +kubectl apply -f examples/common/operator.yaml +``` + +This will install the operator in namespace `scylla-operator`. +Wait until it's ready: + +```console +kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator +``` + +If you want to check the logs of the operator you can do so with: + + ```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +## Create and Initialize a Scylla Cluster + +Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the `clusters.scylla.scylladb.com` resource. +Some of that resource's values are configurable, so feel free to browse `cluster.yaml` and tweak the settings to your liking. +Full details for all the configuration options can be found in the [Scylla Cluster CRD documentation](scylla-cluster-crd.md). + +When you are ready to create a Scylla cluster, simply run: + +```console +kubectl create -f examples/generic/cluster.yaml +``` + +We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment. + +```console +kubectl -n scylla get ScyllaCluster +``` + +Checking the pods that are created is as easy as: + +```console +kubectl -n scylla get pods +``` + +The output should be something like: + +```console +NAME READY STATUS RESTARTS AGE +simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 9m49s +simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 7m43s +simple-cluster-us-east-1-us-east-1a-2 2/2 Running 0 6m46s +``` + +It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: `CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER` as specified in `cluster.yaml`. + +In the above example we have the following properties: + + - CLUSTER_NAME: `simple-cluster` + - DATACENTER_NAME: `us-east-1` + - RACK_NAME: `us-east-1a` + - INSTANCE_NUMBER: An automatically generated number attached to the pod name. + +We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want. + +To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in `cluster.yaml`: + +```console +kubectl -n scylla get pod -l app=scylla +``` + +You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run: + +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +Checking the logs of the running scylla instances can be done like this: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla +``` + +### Configure host networking + +To squeeze the most out of your deployment it is sometimes necessary to employ [host networking](https://kubernetes.io/docs/concepts/services-networking/). +To enable this the CRD allows for specifying a `network` parameter as such: + +```yaml +version: 4.0.0 + agentVersion: 2.0.2 + cpuset: true + network: + hostNetworking: true +``` + +This will result in hosts network to be used for the Scylla Stateful Set deployment. + +### Configure container kernel parameters + +Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property `sysctls` that is a list of the desired key-value pairs to set. + +___For example___: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls to`fs.aio-max-nr=N`. + +```yaml +spec: + sysctls: + - "fs.aio-max-nr=2097152" +``` + +### Deploying Alternator + +The operator is also capable of deploying [Alternator](https://www.scylladb.com/alternator/) instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the `cluster.yaml` file from this: +```yaml +spec: + version: 4.0.0 + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +to this: +```yaml +spec: + version: 4.0.0 + alternator: + port: 8000 + writeIsolation: only_rmw_uses_lwt + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +You can specify whichever port you want. + +You must provide desired write isolation, supported values are: "always", "forbid_rmw", "only_rmw_uses_lwt". +Difference between those isolation levels can be found in Scylla Alternator documentation. + +Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster. + +## Accessing the Database + +* From kubectl: + +To get a cqlsh shell in your new Cluster: +```console +kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh +> DESCRIBE KEYSPACES; +``` + + +* From inside a Pod: + +When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service's name follows the convention `-client`. +You can see this Service in your cluster by running: +```console +kubectl -n scylla describe service simple-cluster-client +``` +Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here's an example using the [Python Driver](https://github.com/datastax/python-driver): +```python +from cassandra.cluster import Cluster + +cluster = Cluster(['simple-cluster-client.scylla.svc']) +session = cluster.connect() +``` + +If you are running the Alternator you can access the API on the port you specified using plain http. + +## Configure Scylla + +The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called `scylla.yaml` that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration. + +* Create a ConfigMap the default name that the operator uses is `scylla-config`: +```console +kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml +``` +* Wait for the mount to propagate and then restart the cluster: +```console +kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a +``` +* The new config should be applied automatically by the operator, check the logs to be sure. + +Configuring `cassandra-rackdc.properties` is done by adding the file to the same mount as `scylla.yaml`. +```console +kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f - +``` +The operator will then apply the overridable properties `prefer_local` and `dc_suffix` if they are available in the provided mounted file. + +## Configure Scylla Manager Agent + +The operator creates a second container for each scylla instance that runs [Scylla Manager Agent](https://hub.docker.com/r/scylladb/scylla-manager-agent). +This container serves as a sidecar and it's the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups. + +To configure the agent you just create a new secret called _scylla-agent-config-secret_ and populate it with the contents in the `scylla-manager-agent.yaml` file like this: +```console +kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml +``` + +See [Scylla Manager Agent configuration](https://docs.scylladb.com/operating-scylla/manager/2.0/agent-configuration-file/) for a complete reference of the Scylla Manager agent config file. + +### Scylla Manager Agent auth token + +Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it's empty. +To check which value is being used, decode content of `-auth-token` secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart. + +## Set up monitoring + +To set up monitoring using Prometheus and Grafana follow [this guide](monitoring.md). + +## Scale Up + +The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale up a rack, change the `Spec.Members` field of the rack to the desired value. +* To add a new rack, append the `racks` list with a new rack. Remember to choose a different rack name for the new rack. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Benchmark with cassandra-stress + +After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster. + +> Because cassandra-stress doesn't scale well to multiple cores, we use multiple jobs with a small core count for each + +```bash + +# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each. +# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec. +hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000 +kubectl apply -f scripts/cassandra-stress.yaml +``` + +Make sure you set the proper arguments in case you have altered things such as _name_ or _namespace_. + +```bash +./hack/cass-stress-gen.py -h +usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT] + [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR] + +Generate cassandra-stress job templates for Kubernetes. + +optional arguments: + -h, --help show this help message and exit + --num-jobs NUM_JOBS number of Kubernetes jobs to generate - defaults to 1 + --name NAME name of the generated yaml file - defaults to cassandra-stress + --namespace NAMESPACE + namespace of the cassandra-stress jobs - defaults to "default" + --scylla-version SCYLLA_VERSION + version of scylla server to use for cassandra-stress - defaults to 4.0.0 + --host HOST ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc + --cpu CPU number of cpus that will be used for each job - defaults to 1 + --memory MEMORY memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu + --ops OPS number of operations for each job - defaults to 10000000 + --threads THREADS number of threads used for each job - defaults to 50 * cpu + --limit LIMIT rate limit for each job - defaults to no rate-limiting + --connections-per-host CONNECTIONS_PER_HOST + number of connections per host - defaults to number of cpus + --print-to-stdout print to stdout instead of writing to a file + --nodeselector NODESELECTOR + nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla +``` +While the benchmark is running, open up Grafana and take a look at the monitoring metrics. + +After the Jobs finish, clean them up with: +```bash +kubectl delete -f scripts/cassandra-stress.yaml +``` + +## Scale Down + +The operator supports scale down of a rack. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale down a rack, change the `Spec.Members` field of the rack to the desired value. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Clean Up + +To clean up all resources associated with this walk-through, you can run the commands below. + +**NOTE:** this will destroy your database and delete all of its associated data. + +```console +kubectl delete -f examples/generic/cluster.yaml +kubectl delete -f examples/common/operator.yaml +kubectl delete -f examples/common/cert-manager.yaml +``` + +## Troubleshooting + +If the cluster does not come up, the first step would be to examine the operator's logs: + +```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 +``` diff --git a/stable/_sources/gke.md.txt b/stable/_sources/gke.md.txt new file mode 100644 index 00000000000..04fe721f224 --- /dev/null +++ b/stable/_sources/gke.md.txt @@ -0,0 +1,167 @@ +# Deploying Scylla on GKE + +This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +GCP_USER=$(gcloud config list account --format "value(core.account)") +GCP_PROJECT=$(gcloud config list project --format "value(core.project)") +GCP_ZONE=us-west1-b + +# From inside the examples/gke folder +cd examples/gke +./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE" + +# Example: +# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b +``` + +:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region. + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### Google Kubernetes Engine Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +GCP_USER=$( gcloud config list account --format "value(core.account)" ) +GCP_PROJECT=$( gcloud config list project --format "value(core.project)" ) +GCP_REGION=us-west1 +GCP_ZONE=us-west1-b +CLUSTER_NAME=scylla-demo +CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" ) +``` + +#### Creating a GKE cluster + +First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called `systemconfig.yaml` with the following content: +``` +kubeletConfig: + cpuManagerPolicy: static +``` + +Then we'll create a GKE cluster with the following: + +1. A NodePool of 2 `n1-standard-8` Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes. + ``` + gcloud container \ + clusters create "${CLUSTER_NAME}" \ + --cluster-version "${CLUSTER_VERSION}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-8" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --image-type "UBUNTU_CONTAINERD" \ + --system-config-from-file=systemconfig.yaml \ + --enable-stackdriver-kubernetes \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +2. A NodePool of 2 `n1-standard-32` Nodes to deploy `cassandra-stress` later on. + + ``` + gcloud container --project "${GCP_PROJECT}" \ + node-pools create "cassandra-stress-pool" \ + --cluster "${CLUSTER_NAME}" \ + --zone "${GCP_ZONE}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --node-taints role=cassandra-stress:NoSchedule \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +3. A NodePool of 4 `n1-standard-32` Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as [raw block devices](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd#raw-block). It is important to disable `autoupgrade` and `autorepair`. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it's better to handle upgrades manually, with more control over the process and error handling. + ``` + gcloud container \ + node-pools create "scylla-pool" \ + --cluster "${CLUSTER_NAME}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "4" \ + --disk-type "pd-ssd" --disk-size "20" \ + --local-nvme-ssd-block count="8" \ + --node-taints role=scylla-clusters:NoSchedule \ + --node-labels scylla.scylladb.com/node-type=scylla \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +#### Setting Yourself as `cluster-admin` +> (By default GKE doesn't give you the necessary RBAC permissions) + +Get the credentials for your new cluster +``` +gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}" +``` + +Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission `container.clusterRoleBindings.create`. +The easiest way to obtain this permission is to enable the `Kubernetes Engine Admin` role for your user in the GCP IAM web interface. +``` +kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}" +``` + + +### Prerequisites + +#### Setting up nodes for ScyllaDB + +ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you'll first need to form a RAID array from those disks. +`NodeConfig` performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in [Performance tuning](performance.md) section of ScyllaDB Operator's documentation. + +Deploy `NodeConfig` to let it take care of the above operations: +``` +kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml +``` + +#### Deploying Local Volume Provisioner + +Afterwards, deploy ScyllaDB's [Local Volume Provisioner](https://github.com/scylladb/k8s-local-volume-provisioner), capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays. +``` +kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/ +kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml +``` + +### Deploy Scylla cluster +In order for the example to work you need to modify the cluster definition in the following way: + +``` +sed -i "s//${GCP_REGION}/g;s//${GCP_ZONE}/g" examples/gke/cluster.yaml +``` + +This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created. + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to install the operator and launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting a GKE cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}" +``` diff --git a/stable/_sources/helm.md.txt b/stable/_sources/helm.md.txt new file mode 100644 index 00000000000..56fbe9620ac --- /dev/null +++ b/stable/_sources/helm.md.txt @@ -0,0 +1,339 @@ +# Deploying Scylla stack using Helm Charts + +In this example we will install Scylla stack on Kubernetes. This includes the following components: +- Scylla Operator +- Scylla Manager +- Scylla + +We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator. + +### Prerequisites + +- Kubernetes 1.16+ +- Helm 3+ + +### TL;DR + +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +kubectl apply -f examples/common/cert-manager.yaml +helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator +helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager +helm install scylla scylla/scylla --create-namespace --namespace scylla +``` + +### Deploy Cert Manager + +This step is optional if you want to use your own certificate. +If you don't have one, make sure to not disable autogeneration using Scylla Operator Helm Chart. + +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` + +Once it's deployed, wait until all Cert Manager pods will enter into Running state: + +```console +kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s +``` + +### Helm Chart repository + +To install Scylla Helm Chart repository execute the following commands: +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +``` + +Then you can search through repository, it should contain at least three Helm charts: +``` +helm search repo scylla +NAME CHART VERSION APP VERSION DESCRIPTION +scylla/scylla 1.0.1 v1.0.1 Scylla is a close-to-the-hardware rewrite of Ca... +scylla/scylla-manager 1.0.1 v1.0.1 Scylla Manager automates database operations. +scylla/scylla-operator 1.0.1 v1.0.1 Scylla Operator is a Kubernetes Operator for ma... +``` + +All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit. + +### Scylla Operator Chart + +This chart is very simple, most interesting customizable fields are `image`, `resources` and `webhook`. +All others can be looked up in Chart source in Scylla Operator repository. + +#### image + +Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change `pullPolicy` if default one does not +fullfill your needs. In [Kubernetes documentation](https://kubernetes.io/docs/concepts/containers/images/) you +can read more about different pull policies. + +Image URL will be composed based on these fields in follwing pattern: +`repository/scylla-operator:tag` +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +#### resources + +You can customize how much resources will be allocated for Operator pods via `resource` field: +```yaml +resources: + limits: + cpu: 100m + memory: 128Mi + requests: + cpu: 100m + memory: 32Mi +``` + +To read more about resource specification, follow [Kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/). + +#### webhook + +Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate. + +`createSelfSignedCertificate` specifies whether a self-signed certificate should be created using Cert Manager +`certificateSecretName`: name of a secret containing custom certificate. + +```yaml +webhook: + createSelfSignedCertificate: true + certificateSecretName: "" +``` + +#### Customization + +You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values. + +You can find an example in Scylla Operator repository under `examples/helm/values.operator.yaml` + +#### Installation + +To deploy Scylla Operator using customized values file execute the following: +``` +helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator +``` + +### Scylla Helm Chart + +Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it. + +#### Customization + +Versions of images used in the cluster can be set via `scyllaImage` and `agentImage` +```yaml +scyllaImage: + repository: scylladb/scylla + tag: 4.3.0 + +agentImage: + repository: scylladb/scylla-manager-agent + tag: 2.2.1 +``` + +A minimal Scylla cluster can be expressed as: +```yaml +datacenter: us-east-1 +racks: +- name: us-east-1b + members: 2 + storage: + capacity: 5G + resources: + limits: + cpu: 1 + memory: 1Gi + requests: + cpu: 1 + memory: 1Gi +``` + +Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory. + +For other customizable fields, please refer to [ScyllaCluster CRD definition](scylla-cluster-crd.md). +CRD Rack Spec and Helm Chart Rack should have the same fields. + +#### Installation + +To deploy Scylla cluster using customzied values file execute the following command: +``` +helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla +``` + +Scylla Operator will provision this cluster on your K8s environment. + +### Scylla Manager Helm Chart + +Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster. + +To read more about Scylla Manager see [Manager guide](manager.md). + +#### Scylla Manager + +To set version of used Scylla Manager you can use `image` field: +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: 2.2.1 +``` +To control how many resources are allocated for Scylla Manager use `resource` field: +```yaml +resources: + limits: + cpu: 500m + memory: 500Mi + requests: + cpu: 500m + memory: 500Mi +``` + +#### Scylla Manager Controller + +Similarly Scylla Manager Controller image can be customized: + +```yaml +controllerImage: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +And allocated resources: +```yaml +controllerResources: + limits: + cpu: 100m + memory: 30Mi + requests: + cpu: 100m + memory: 20Mi +``` + +#### Scylla + +To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It's definition should land as a `scylla` field. + +#### Customization + +All others customizable fields can be looked up in Chart source in Scylla Operator repository. + +#### Installation + +To deploy Scylla Manager using customized values file execute the following command: +``` +helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager +``` + +## Results + +Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn't it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces. + +Scylla Operator: +```shell +$ kubectl -n scylla-operator get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-operator-5dbcb54f5c-vjm4m 1/1 Running 0 51s +pod/scylla-operator-5dbcb54f5c-wfjbw 1/1 Running 0 51s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-operator-webhook ClusterIP 10.105.207.130 443/TCP 51s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-operator 2/2 2 2 51s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-operator-5dbcb54f5c 2 2 2 51s + +``` + +Operator is running! + +Scylla Manager: +```shell +$ kubectl -n scylla-manager get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-manager-669db64dd-bcm4v 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-drbth 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-rhwqx 1/1 Running 0 89s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-manager ClusterIP 10.105.231.53 80/TCP,5090/TCP 89s +service/scylla-manager-client ClusterIP None 9180/TCP,5090/TCP 89s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-manager 1/1 1 1 89s +deployment.apps/scylla-manager-controller 2/2 2 2 89s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-manager-669db64dd 1 1 1 89s +replicaset.apps/scylla-manager-controller-844ccc56c4 2 2 2 89s + + +``` + +Good to go, ready to serve! + +Scylla itself: +```shell +$ kubectl -n scylla get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-us-east-1-us-east-1b-0 2/2 Running 0 5m58s +pod/scylla-us-east-1-us-east-1b-1 2/2 Running 0 4m29s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-client ClusterIP None 9180/TCP,5090/TCP 5m59s +service/scylla-us-east-1-us-east-1b-0 ClusterIP 10.43.149.92 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 5m58s +service/scylla-us-east-1-us-east-1b-1 ClusterIP 10.43.49.0 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 4m29s + +NAME READY AGE +statefulset.apps/scylla-us-east-1-us-east-1b 2/2 5m59s +``` + +Two running nodes, exactly what we were asking for. + +## Monitoring + +To spin up a Prometheus monitoring refer to [monitoring guide](monitoring.md). + +Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor: +```yaml +serviceMonitor: + create: false +``` + +Change `create` to `true` and update your current deployment using: +```shell +helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml +``` + +Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics. + +## Cleanup + +To remove these applications you can simply uninstall them using Helm CLI: +```shell +helm uninstall scylla -n scylla +helm uninstall scylla-manager -n scylla-manager +helm uninstall scylla-operator -n scylla-operator +``` diff --git a/stable/_sources/index.rst.txt b/stable/_sources/index.rst.txt new file mode 100644 index 00000000000..9c671aaad98 --- /dev/null +++ b/stable/_sources/index.rst.txt @@ -0,0 +1,62 @@ +============================= +Scylla Operator Documentation +============================= + +.. toctree:: + :hidden: + :maxdepth: 1 + + generic + eks + gke + helm + manager + monitoring + migration + nodeoperations/index + performance + upgrade + releases + known-issues + scylla-cluster-crd + contributing + +Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades. + +.. image:: logo.png + :width: 200pt + +For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University. + +scylla-operator is a Kubernetes Operator for managing Scylla clusters. + +Currently it supports: + +* Deploying multi-zone clusters +* Scaling up or adding new racks +* Scaling down +* Monitoring with Prometheus and Grafana +* Integration with `Scylla Manager `_ +* Dead node replacement +* Version Upgrade +* Backup +* Repairs +* Autohealing +* Monitoring with Prometheus and Grafana + +**Choose a topic to begin**: + +* :doc:`Deploying Scylla on a Kubernetes Cluster ` +* :doc:`Deploying Scylla on EKS ` +* :doc:`Deploying Scylla on GKE ` +* :doc:`Deploying Scylla Manager on a Kubernetes Cluster ` +* :doc:`Deploying Scylla stack using Helm Charts ` +* :doc:`Setting up Monitoring using Prometheus and Grafana ` +* :doc:`Node operations ` +* :doc:`Performance tuning [Experimental] ` +* :doc:`Upgrade procedures ` +* :doc:`Releases ` +* :doc:`Known issues ` +* :doc:`Scylla Cluster Custom Resource Definition (CRD) ` +* :doc:`Contributing to the Scylla Operator Project ` diff --git a/stable/_sources/known-issues.md.txt b/stable/_sources/known-issues.md.txt new file mode 100644 index 00000000000..1af3a7bfdd1 --- /dev/null +++ b/stable/_sources/known-issues.md.txt @@ -0,0 +1,14 @@ +# Known issues + +### Scylla Manager does not boot up on Minikube + +If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for [TRUNCATE queries](#truncate-queries-does-not-work-on-minikube). + +### TRUNCATE queries does not work on Minikube + +The `TRUNCATE` queries requires [hairpinning](https://en.wikipedia.org/wiki/Hairpinning) to be enabled. On minikube this is disabled by default. + +To fix it execute the following command: +``` +minikube ssh sudo ip link set docker0 promisc on +``` diff --git a/stable/_sources/manager.md.txt b/stable/_sources/manager.md.txt new file mode 100644 index 00000000000..10ee6839cbd --- /dev/null +++ b/stable/_sources/manager.md.txt @@ -0,0 +1,258 @@ +# Deploying Scylla Manager on a Kubernetes Cluster + +Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way. + +Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager [Proprietary Software License Agreement](https://www.scylladb.com/scylla-manager-software-license-agreement/) for details. + +## Prerequisites + +* Kubernetes cluster +* Scylla Operator - see [generic guide](generic.md) + +## Architecture + +Scylla Manager in K8s consist of: +- Dedicated Scylla Cluster + + Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace. + +- Scylla Manager Controller + + Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states. + 1. What user wants - task definition in CRD. + 2. What Controller registered - Task name to Task ID mapping - CRD status. + 3. Scylla Manager task listing - internal state of Scylla Manager. + + When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling. + +- Scylla Manager + + Regular Scylla Manager, the same used in cloud and bare metal deployments. + + + +## Deploy Scylla Manager + +Deploy the Scylla Manager using the following commands: + +```console +kubectl apply -f examples/common/manager.yaml +``` + +This will install the Scylla Manager in the `scylla-manager` namespace. +You can check if the Scylla Manager is up and running with: + +```console +kubectl -n scylla-manager get pods +NAME READY STATUS RESTARTS AGE +scylla-manager-cluster-manager-dc-manager-rack-0 2/2 Running 0 37m +scylla-manager-controller-0 1/1 Running 0 28m +scylla-manager-scylla-manager-7bd9f968b9-w25jw 1/1 Running 0 37m +``` + +As you can see there are three pods: +* `scylla-manager-cluster-manager-dc-manager-rack-0` - is a single node Scylla cluster. +* `scylla-manager-controller-0` - Scylla Manager Controller. +* `scylla-manager-scylla-manager-7bd9f968b9-w25jw` - Scylla Manager. + +To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command: + + ```console +kubectl -n scylla-manager logs scylla-manager-controller-0 +``` + +The output should be something like: +```console +{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +``` + +To check logs of Scylla Manager itself, use following command: +```console +kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + +The output should be something like: + +```console +{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +``` + +If there are no errors in the logs, let's spin a Scylla Cluster. + +## Cluster registration + + +When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster. + +See [generic tutorial](generic.md) to spawn your cluster. + +Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager. + +Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager. + + ```console +kubectl -n scylla describe Cluster + +[...] +Status: + Manager Id: d1d532cd-49f2-4c97-9263-25126532803b + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` +You can use this ID to talk to Scylla Manager using `sctool` CLI installed in Scylla Manager Pod. +You can also use Cluster name in `namespace/cluster-name` format. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator). + +In this task listing we can see CQL and REST healthchecks. + +## Task scheduling + +You can either define tasks prior Cluster creation, or for existing Cluster. +Let's edit already running cluster definition to add repair and backup task. +```console +kubectl -n scylla edit Cluster simple-cluster +``` + +Add following task definition to Cluster spec: +``` + repairs: + - name: "users repair" + keyspace: ["users"] + interval: "1d" + backup: + - name: "weekly backup" + location: ["s3:cluster-backups"] + retention: 3 + interval: "7d" + - name: "daily backup" + location: ["s3:cluster-backups"] + retention: 7 + interval: "1d" +``` + +For full task definition configuration consult [Scylla Cluster CRD](scylla-cluster-crd.md). + +**Note**: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up. + +Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372 │ -L s3:cluster-backups --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d) │ NEW │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a │ │ 23 Sep 20 14:38:42 CEST │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly. + +To check progress of run you can use following command: + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a +Status: RUNNING +Start time: 23 Sep 20 14:38:42 UTC +Duration: 13s +Progress: 2.69% +Datacenters: + - us-east-1 ++--------------------+-------+ +| system_auth | 8.06% | +| system_distributed | 0.00% | +| system_traces | 0.00% | ++--------------------+-------+ + +``` +Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing. + +## Clean Up + +To clean up all resources associated with Scylla Manager, you can run the commands below. + +**NOTE:** this will destroy your Scylla Manager database and delete all of its associated data. + +```console +kubectl delete -f examples/common/manager.yaml +``` + +## Troubleshooting + +**Manager is not running** + +If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs: + +```console +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + + +**My task wasn't scheduled** + +If your task wasn't scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs. + +Example: + +Following status describes error when backup task cannot be scheduled, due to lack of access to bucket: +```console +Status: + Backups: + Error: create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug" + Id: 00000000-0000-0000-0000-000000000000 + Interval: 0 + Location: + s3:manager-test + Name: adhoc backup + Num Retries: 3 + Retention: 3 + Start Date: now + Manager Id: 2b9dbe8c-9daa-4703-a66d-c29f63a917c8 + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` + +Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status. \ No newline at end of file diff --git a/stable/_sources/migration.md.txt b/stable/_sources/migration.md.txt new file mode 100644 index 00000000000..cdd7a7e8522 --- /dev/null +++ b/stable/_sources/migration.md.txt @@ -0,0 +1,146 @@ +## Version migrations + + +### `v0.3.0` -> `v1.0.0` migration + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common kind +which is easier to disambiguate (`ScyllaCluster`). +***This change is backward incompatible, which means manual migration is needed.*** + +This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the [upgrade guide](upgrade.md) where full deletion is requested, this procedure shouldn't cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn't run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first. + +***Read the whole procedure and make sure you understand what is going on before executing any of the commands!*** + +In case of any issues or questions regarding this procedure, you're welcomed on our [Scylla Users Slack](http://slack.scylladb.com/) +on #kubernetes channel. + +### Procedure + +1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` + All below commands will use `scylla` namespace and `simple-cluster` as a cluster name. +1. Make sure you're using v1.0.0 tag: + ``` + git checkout v1.0.0 + ``` +1. Upgrade your `cert-manager` to `v1.0.0`. If you installed it from a static file from this repo, simply execute the following: + ``` + kubectl apply -f examples/common/cert-manager.yaml + ``` + If your `cert-manager` was installed in another way, follow official instructions on `cert-manager` website. +1. `examples/common/operator.yaml` file contains multiple resources. Extract **only** `CustomResourceDefinition` to separate file. +1. Install v1.0.0 CRD definition from file created in the previous step: + ``` + kubectl apply -f examples/common/crd.yaml + ``` +1. Save your existing `simple-cluster` Cluster definition to a file: + ``` + kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml + ``` +1. Migrate `Kind` and `ApiVersion` to new values using: + ``` + sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml + sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml + ``` +1. Install migrated CRD instance + ``` + kubectl apply -f existing-cluster.yaml + ``` + At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator. +1. Get UUID of newly created ScyllaCluster resource: + ``` + kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}" + + 12a3678d-8511-4c9c-8a48-fa78d3992694 + ``` + Save output UUID somewhere, it will be referred as `` in commands below. + + ***Depending on your shell, you might get additional '%' sign at the end of UUID, make sure to remove it!*** + +1. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters: + ``` + kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]' + ``` + Amend role name according to your cluster name, it should look like `-member`. +1. Get a list of all Services associated with your cluster. First get list of all services: + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 109m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 108m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 106m + + ``` +1. For each service, change its `ownerReference` to point to new CRD instance: + ``` + kubectl -n scylla patch svc --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with Service name, and `` with saved UUID from one of the previous steps. +1. Get a list of all Services again to see if none was deleted. Check also "Age" column, it shouldn't be lower than previous result. + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 110m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 110m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 107m + + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m + ``` +1. For each StatefulSet from previous step, change its `ownerReference` to point to new CRD instance. + + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with StatefulSet name, and `` with saved UUID from one of the previous steps. + +1. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. + Checkout `v0.3.0` version, and remove Scylla Operator, and old CRD: + ``` + git checkout v0.3.0 + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0`, and install upgraded Scylla Operator: + ``` + git checkout v1.0.0 + kubectl apply -f examples/common/operator.yaml + ``` +1. Wait until Scylla Operator boots up: + ``` + kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m +1. For each StatefulSet from previous step, change its sidecar container image to `v1.0.0`, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one. + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + kubectl -n scylla rollout status sts + ``` + Replace `` with StatefulSet name. +1. If you're using Scylla Manager, bump Scylla Manager Controller image to `v1.0.0` + ``` + kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + ``` +1. Your Scylla cluster is now migrated to `v1.0.0`. diff --git a/stable/_sources/monitoring.md.txt b/stable/_sources/monitoring.md.txt new file mode 100644 index 00000000000..9f2651c5737 --- /dev/null +++ b/stable/_sources/monitoring.md.txt @@ -0,0 +1,180 @@ +# Monitoring + +Scylla Operator 1.8 introduced a new API resource `ScyllaDBMonitoring`, allowing users to deploy a managed monitoring +setup for their Scylla Clusters. + +```yaml +apiVersion: scylla.scylladb.com/v1alpha1 +kind: ScyllaDBMonitoring +metadata: + name: example +spec: + type: Platform + endpointsSelector: + matchLabels: + app.kubernetes.io/name: scylla + scylla-operator.scylladb.com/scylla-service-type: identity + scylla/cluster: replace-with-your-scyllacluster-name + components: + prometheus: + storage: + volumeClaimTemplate: + spec: + resources: + requests: + storage: 1Gi + grafana: + exposeOptions: + webInterface: + ingress: + ingressClassName: haproxy + dnsDomains: + - test-grafana.test.svc.cluster.local + annotations: + haproxy-ingress.github.io/ssl-passthrough: "true" +``` + +For details, refer to the below command: +```console +$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1 +``` + +## Deploy managed monitoring + +**Note**: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions. + +### Requirements + +Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see: +* [Deploying Scylla on a Kubernetes Cluster](generic.md) +* [Deploying Scylla stack using Helm Charts](helm.md) + +The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps. + +#### Deploy Prometheus Operator +Deploy Prometheus Operator using kubectl: +```console +$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator +``` + +##### Wait for Prometheus Operator to roll out +```console +$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator +deployment "prometheus-operator" successfully rolled out +``` + +#### Deploy HAProxy Ingress +Deploy HAProxy Ingress using kubectl: +```console +$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress +``` + +##### Wait for HAProxy Ingress to roll out +```console +$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress +deployment "haproxy-ingress" successfully rolled out +``` + +### Deploy ScyllaDBMonitoring + +First, update the `endpointsSelector` in `examples/monitoring/v1alpha1/scylladbmonitoring.yaml` with a label +matching your ScyllaCluster instance name. + +Deploy the monitoring setup using kubectl: +```console +$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml +``` + +Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources. + +#### Wait for ScyllaDBMonitoring to roll out +```console +$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met +``` + +#### Wait for Prometheus to roll out +```console +$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example +statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb... +``` + +#### Wait for Grafana to roll out +```console +$ kubectl rollout status --timeout=5m deployments.apps/example-grafana +deployment "example-grafana" successfully rolled out +``` + +### Accessing Grafana + +For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller's IP address but most clients and tools allow setting the SNI field manually. + +### Prerequisites + +To access Grafana, you first need to collect the serving CA and the credentials. + +```console +$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )" +$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )" +$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )" +``` + +### Connecting through Ingress using a resolvable domain + +In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like `*.app.mydomain` pointing to the Ingress controller's external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller's A record. + +Note: The ScyllaDBMonitoring example creates an Ingress object with `test-grafana.test.svc.cluster.local` DNS domain that you should adjust to your domain. Below examples use `example-grafana.apps.mydomain`. + +Note: To test a resolvable domain from your machine without creating DNS records, you can adjust `/etc/hosts` or similar. + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` + +### Connecting through Ingress using an unresolvable domain + +To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller's IP that can be resolved externally. Again, there are many ways to do so beyond the below examples. + +Unless stated otherwise, we assume your Ingress is running on port 443. + +```console +$ INGRESS_PORT=443 +``` + +#### Variants + +##### Ingress ExternalIP + +When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address. + +```console +$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )" +``` + +##### Ingress NodePort + +NodePort is slightly less convenient, but it's available in development clusters as well. + +```console +$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )" +$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )" +``` + +##### Connection + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` diff --git a/stable/_sources/nodeoperations/automatic-cleanup.md.txt b/stable/_sources/nodeoperations/automatic-cleanup.md.txt new file mode 100644 index 00000000000..5e0535cca97 --- /dev/null +++ b/stable/_sources/nodeoperations/automatic-cleanup.md.txt @@ -0,0 +1,6 @@ +# Automatic cleanup and replacement in case when k8s node is lost + +In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity. + +When `automaticOrphanedNodeCleanup` flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources. diff --git a/stable/_sources/nodeoperations/index.rst.txt b/stable/_sources/nodeoperations/index.rst.txt new file mode 100644 index 00000000000..c04919e5d13 --- /dev/null +++ b/stable/_sources/nodeoperations/index.rst.txt @@ -0,0 +1,22 @@ +====================================== +Node operations using Scylla Operator +====================================== + +.. toctree:: + :hidden: + :maxdepth: 2 + + scylla-upgrade + replace-node + automatic-cleanup + maintenance-mode + restore + + +Choose a topic: + +* :doc:`Scylla version upgrade ` +* :doc:`Replace Scylla node ` +* :doc:`Automatic cleanup and replacement when k8s node is lost ` +* :doc:`Maintenance mode ` +* :doc:`Restore from backup ` \ No newline at end of file diff --git a/stable/_sources/nodeoperations/maintenance-mode.md.txt b/stable/_sources/nodeoperations/maintenance-mode.md.txt new file mode 100644 index 00000000000..c976ecc2b87 --- /dev/null +++ b/stable/_sources/nodeoperations/maintenance-mode.md.txt @@ -0,0 +1,19 @@ +# Maintenance mode + +When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive. + +This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again. + +To enable maintenance mode add `scylla/node-maintenance` label to service in front of Scylla Pod. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance="" +``` + +To disable, simply remove this label from service. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance- +``` diff --git a/stable/_sources/nodeoperations/replace-node.md.txt b/stable/_sources/nodeoperations/replace-node.md.txt new file mode 100644 index 00000000000..3e6a8c7f024 --- /dev/null +++ b/stable/_sources/nodeoperations/replace-node.md.txt @@ -0,0 +1,74 @@ +# Replacing a Scylla node + +## Replacing a dead node +In the case of a host failure, it may not be possible to bring back the node to life. + +Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth). + +_This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time_ + +**Procedure** + +1. Verify the status of the node using `nodetool status` command, the node with status DN is down and need to be replaced + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.63 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + DN 10.43.43.51 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Identify service which is bound to down node by checking IP address + ```bash + kubectl -n scylla get svc + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.231.189 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.125.110 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h11m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.43.51 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h5m + ``` +1. Drain node which we would like to replace using. **This command may delete your data from local disks attached to given node!** + ```bash + kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data + ``` + + Pod which will be replaced should enter the `Pending` state + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h21m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h19m + simple-cluster-us-east-1-us-east-1a-2 0/2 Pending 0 8m14s + ``` +1. To being node replacing, add `scylla/replace=""` label to service bound to pod we are replacing. + ```bash + kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace="" + ``` + Your failed Pod should be recreated on available k8s node + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h27m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h25m + simple-cluster-us-east-1-us-east-1a-2 1/2 Running 0 9s + ``` + Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. + After bootstraping is over, your new Pod should be ready to go. + Old one shouldn't be no longer visible in `nodetool status` + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.62 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + UN 10.43.191.172 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. + You can use [Scylla Manager](../manager.md) to run the repair. diff --git a/stable/_sources/nodeoperations/restore.md.txt b/stable/_sources/nodeoperations/restore.md.txt new file mode 100644 index 00000000000..b4d85573cff --- /dev/null +++ b/stable/_sources/nodeoperations/restore.md.txt @@ -0,0 +1,89 @@ +# Restore from backup + +This procedure will describe how to restore from backup taken using [Scylla Manager](../manager.md) to a fresh **empty** cluster of any size. + +First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod. +```bash +sctool backup list -c --all-clusters -L +``` + +Where: +* `CLUSTER_ID` - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status. +* `BACKUP_LOCATION` - is a location where backup is stored. For example, for bucket called `backups` stored in AWS S3, location is `s3:backups`. + +```bash +sctool backup list -c simple-cluster --all-clusters -L s3:backups +Snapshots: + - sm_20201227144037UTC (409MiB) + - sm_20201228145917UTC (434MiB) +Keyspaces: + - users (9 tables) + - system_auth (2 tables) + - system_distributed (3 tables) + - system_schema (13 tables) + - system_traces (5 tables) +``` + +To get the list of files use: + +```bash +sctool backup files -c -L -T +``` + +Where: +* `SNAPSHOT_TAG` - name of snapshot you want to restore. + +Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example: +```bash +s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz ./ +``` + +To download this archive you can use AWS CLI tool `aws s3 cp`. + +This archive contains a single CQL file for each keyspace in the backup. +```bash +tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz +-rw------- 0/0 12671 2020-12-28 13:17 users.cql +-rw------- 0/0 2216 2020-12-28 13:17 system_auth.cql +-rw------- 0/0 921 2020-12-28 13:17 system_distributed.cql +-rw------- 0/0 12567 2020-12-28 13:17 system_schema.cql +-rw------- 0/0 4113 2020-12-28 13:17 system_traces.cql +``` + +Extract this archive and copy each schema file to one of the cluster Pods by: +```bash +kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla +``` + +To import schema simply execute: +```bash +kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql +``` + +Once the schema is recreated we can proceed to downloading data files. + +First let's save a list of snapshot files to file called `backup_files.out`: + +```bash +kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out +``` + +We will be using `sstableloader` to restore data. `sstableloader` needs a specific directory structure to work namely: `//` +To create this directory structure and download all the files execute these commands: +```bash +mkdir snapshot +cd snapshot +# Create temporary directory structure. +cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p +# Download snapshot files. +cat ../backup_files.out | xargs -n2 aws s3 cp +``` + +To load data into cluster pass cluster address to `sstableloader` together with path to data files and credentials: +```bash +sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password +``` + +Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host. diff --git a/stable/_sources/nodeoperations/scylla-upgrade.md.txt b/stable/_sources/nodeoperations/scylla-upgrade.md.txt new file mode 100644 index 00000000000..d39c9666c5e --- /dev/null +++ b/stable/_sources/nodeoperations/scylla-upgrade.md.txt @@ -0,0 +1,102 @@ +# Upgrading version of Scylla + +To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition. + +In this example cluster will be upgraded to version `4.4.5`. +```bash +kubectl -n scylla patch ScyllaCluster simple-cluster -p '{"spec":{"version": "4.4.5"}}' --type=merge +``` + +Operator supports two types of version upgrades: +1. Patch upgrade +1. Generic upgrade + + +**Patch upgrade** + +Patch upgrade is executed when only patch version change is detected according to [semantic versioning format](https://semver.org/). +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one. + +Example: `4.0.0 -> 4.0.1` + +**Generic upgrade** + +Generic upgrades are executed for the non patch version changes. + +Example: `4.0.0 -> 2020.1.0` or `4.0.0 -> 4.1.0` or even `4.0.0 -> nightly` + +User can observe current state of upgrade in ScyllaCluster status. +```bash +kubectl -n scylla describe ScyllaCluster simple-cluster +[...] +Status: + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.1.9 + Upgrade: + Current Node: simple-cluster-us-east-1-us-east-1a-2 + Current Rack: us-east-1a + Data Snapshot Tag: so_data_20201228135002UTC + From Version: 4.1.9 + State: validate_upgrade + System Snapshot Tag: so_system_20201228135002UTC + To Version: 4.2.2 +``` + +Each upgrade begins with taking a snapshot of `system` and `system_schema` keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under `System Snapshot Tag`. + +Before nodes in rack are upgraded, underlying StatefulSet is changed to use `OnDelete` UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed. + +When a node is being upgraded, [maintenance mode](#maintenance-mode) is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under `Data Snapshot Tag` and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node. + +Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version. + +Current state of upgrade can be traced using `Current Node`, `Current Rack` and `State` status fields. +* `Current Node` shows which node is being upgraded. +* `Current Rack` displays which rack is being upgraded. +* `State` contain information at which stage upgrade is. + +`State` can have following values: +* `begin_upgrade` - upgrade is starting +* `check_schema_agreement` - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried. +* `create_system_backup` - system keyspaces snapshot is being taken +* `find_next_rack` - Operator finds out which rack must be upgraded next, decision is saved in `Current Rack` +* `upgrade_image_in_pod_spec` - Image and UpgradeStrategy is upgraded in underlying StatefulSet +* `find_next_node` - Operator finds out which node must be upgraded next, decision is saved in `Current Node` +* `enable_maintenance_mode` - maintenance mode is being enabled +* `drain_node` - node is being drained +* `backup_data` - snapshot of data keyspaces is being taken +* `disable_maintenance_mode` - maintenance mode is being disabled +* `delete_pod` - Scylla Pod is being deleted +* `validate_upgrade` - Operator validates if new pod enters Ready state and if Scylla version is upgraded +* `clear_data_backup` - snapshot of data keyspaces is being removed +* `clear_system_backup` - snapshot of system keyspaces is being removed +* `restore_upgrade_strategy` - restore UpgradeStrategy in underlying StatefulSet +* `finish_upgrade` - upgrade cleanup + +**Recovering from upgrade failure** + +Upgrade may get stuck on `validate_upgrade` stage. This happens when Scylla Pod refuses to properly boot up. + +To continue with upgrade, first turn off operator by scaling Operator replicas to zero: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0 +``` +Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names. + +Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2 +``` + +Operator should continue upgrade process from where it left off. diff --git a/stable/_sources/performance.md.txt b/stable/_sources/performance.md.txt new file mode 100644 index 00000000000..4b0bbd96781 --- /dev/null +++ b/stable/_sources/performance.md.txt @@ -0,0 +1,95 @@ +# Performance tuning + +Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes. + +## Node tuning + +Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning. + +Below example NodeConfig tunes nodes having `scylla.scylladb.com/node-type=scylla` label: +``` +apiVersion: scylla.scylladb.com/v1alpha1 +kind: NodeConfig +metadata: + name: cluster +spec: + placement: + nodeSelector: + scylla.scylladb.com/node-type: scylla +``` +For more details about new CRD use: +``` +kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1 +``` + +For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more. + +Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node. + +Scylla works most efficently when it's pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares. + +On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others. +We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively. + +Tuning resources are created in a special namespace called `scylla-operator-node-tuning`. + +The tuning is applied only to pods with `Guaranteed` QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions. + +## Kubernetes tuning + +By default, the kubelet uses the CFS quota to enforce pod CPU limits. +When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static. + +Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider. + +Only pods within the [Guaranteed QoS class](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/#create-a-pod-that-gets-assigned-a-qos-class-of-guaranteed)) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won't be part of the shared pool. + +In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class: +* resource request and limits must be equal or only limits have to be provided +* agentResources must be provided and their requests and limits must be equal, or only limits have to be provided + +An example of such a ScyllaCluster that receives a Guaranteed QoS class is below: + +``` +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: guaranteed-cluster + namespace: scylla +spec: + version: 4.5.1 + agentVersion: 2.5.2 + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500Gi + agentResources: + requests: + cpu: 1 + memory: 1G + limits: + cpu: 1 + memory: 1G + resources: + requests: + cpu: 4 + memory: 16G + limits: + cpu: 4 + memory: 16G +``` \ No newline at end of file diff --git a/stable/_sources/releases.md.txt b/stable/_sources/releases.md.txt new file mode 100644 index 00000000000..afb5c8e91d9 --- /dev/null +++ b/stable/_sources/releases.md.txt @@ -0,0 +1,58 @@ +# Releases + +## Schedule +We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates. + +| Release | Code freeze | General availability | +|:-------:|:-----------:|:--------------------:| +| 1.10 | 2022-08-08 | 2021-08-15 | + +## Supported releases +We support the latest 2 releases of the operator to give everyone time to upgrade. + +| Release | General availability | Support ends | +|:-------:|:--------------------:|:---------------:| +| 1.9 | 2023-07-04 | Release of 1.11 | +| 1.8 | 2023-01-25 | Release of 1.10 | +| 1.7 | 2022-01-27 | 2023-07-04 | +| 1.6 | 2021-12-03 | 2023-01-25 | +| 1.5 | 2021-09-16 | 2022-01-27 | +| 1.4 | 2021-08-10 | 2021-12-03 | +| 1.3 | 2021-06-17 | 2021-09-16 | +| 1.2 | 2021-05-06 | 2021-08-10 | +| 1.1 | 2021-03-22 | 2021-06-17 | +| 1.0 | 2021-01-21 | 2021-05-06 | + +### Backport policy +Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers. + +## CI/CD +We use [GitHub actions](https://github.com/scylladb/scylla-operator/actions/workflows/go.yaml?query=branch%3Amaster+event%3Apush) for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite. + +### Automated promotions + +| Git reference | Type | Container image | +| :----------------: | :----: | :--------------------------------------------------: | +| **master** | branch | docker.io/scylladb/scylla-operator:**latest** | +| **vX.Y** | branch | docker.io/scylladb/scylla-operator:**X.Y** | +| **vX.Y.Z** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z** | +| **vX.Y.Z-alpha.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-alpha.N** | +| **vX.Y.Z-beta.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-beta.N** | +| **vX.Y.Z-rc.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-rc.N** | + +### Generally available +GA images aren't build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate. + +## Support matrix + +Support matrix table shows the version requirements for a particular **scylla-operator** version. Be sure to match these requirements, otherwise some functionality will not work. + +| | v1.9 | v1.8 | v1.7 | v1.6 | v1.5 | v1.4 | v1.3 | v1.2 | v1.1 | v1.0 | +|:-----------------:|:----------:|:----------:|:-----------------:|:--------------------:|:-----------:|:-----------:|:----------:|:----------:|:----------:|:----------:| +| Kubernetes | `>=1.21` | `>=1.21` | `>=1.20 && <1.25` | `>=1.19.10 && <1.25` | `>=1.19.10` | `>=1.19.10` | `>=1.19` | `>=1.19` | `>=1.11` | `>=1.11` | +| CRI API | `v1` | `v1alpha2` | `v1alpha2` | `v1alpha2` | | | | | | | +| Scylla OS | `>=5.0` | `>=5.0` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.2` | `>=4.2` | `>=4.0` | `>=4.0` | +| Scylla Enterprise | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | +| Scylla Manager | `>=2.6` | `>=2.6` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | +| Scylla Monitoring | `>=4.0` | `>=4.0` | `>=3.0` | `>=3.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | diff --git a/stable/_sources/scylla-cluster-crd.md.txt b/stable/_sources/scylla-cluster-crd.md.txt new file mode 100644 index 00000000000..75d34f1a028 --- /dev/null +++ b/stable/_sources/scylla-cluster-crd.md.txt @@ -0,0 +1,188 @@ +# Scylla Cluster CRD + +Scylla database clusters can be created and configured using the `clusters.scylla.scylladb.com` custom resource definition (CRD). + +Please refer to the the [user guide walk-through](generic.md) for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD. + +## Sample + +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: simple-cluster + namespace: scylla +spec: + version: 2.3.1 + repository: scylladb/scylla + developerMode: true + cpuset: false + automaticOrphanedNodeCleanup: true + repairs: + - name: "weekly us-east-1 repair" + intensity: "2" + interval: "7d" + dc: ["us-east-1"] + backups: + - name: "daily users backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "1d" + keyspace: ["users"] + - name: "weekly full cluster backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "7d" + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500G + storageClassName: local-raid-disks + resources: + requests: + cpu: 8 + memory: 32Gi + limits: + cpu: 8 + memory: 32Gi + placement: + nodeAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + nodeSelectorTerms: + - matchExpressions: + - key: failure-domain.beta.kubernetes.io/region + operator: In + values: + - us-east-1 + - key: failure-domain.beta.kubernetes.io/zone + operator: In + values: + - us-east-1a + tolerations: + - key: role + operator: Equal + value: scylla-clusters + effect: NoSchedule +``` + +## Settings Explanation + +### Cluster Settings + +* `version`: The version of Scylla to use. It is used as the image tag to pull. +* `agentVersion`: The version of Scylla Manager Agent to use. It is used as the image tag to pull. +* `repository`: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `agentRepository`: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `developerMode`: Optional field. If it's true, then Scylla is started in [developer mode](https://www.scylladb.com/2016/09/13/test-dev-env/). This setting is for shared test/dev environments. +* `cpuset`: Optional field. If it's true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and only specify limits in resources. +* `automaticOrphanedNodeCleanup`: Optional field. Controls if automatic orphan node cleanup should be performed. +* `alternator`: Optional field. Defines Alternator configuration. + * `port`: Port on which to bind to Alternator API. + * `writeIsolation`: *required* Desired write isolation. +* `genericUpgrade`: Optional field. Defines GenericUpgrade configuration. + * `failureStrategy`: specifies which logic is executed when upgrade failure happens. Currently only `Retry` is supported. + * `pollInterval`: specifies how often upgrade logic polls on state updates. + Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect + overall time spent during upgrade. +* `datacenter`: Datacenter definition. +* `sysctls`: Optional field. Sysctl properties to be applied during initialization. +* `scyllaArgs`: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it. +* `network`: Optional field. Allows to customize network parameters. + * `hostNetworking`: controls if host networking should be enabled. + * `dnsPolicy`: controls Scylla Pod DNS Policy. See [details](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy). +* `repairs`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. +* `backups`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. + + +In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups. + +### Scylla Manager settings + +Tasks are scheduled only when Scylla Manager is deployed in K8s cluster. + +Repairs: +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. Task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. The number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1", "!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `failFast` - Optional field. Stop repair on first error. +* `intensity` - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. + If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). + Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. + Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. + For Scylla clusters that **do not support row-level repair**, intensity can be a decimal between (0,1). + In that case it specifies percent of shards that can be repaired in parallel on a repair master node. + For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. + **Intensity is a number passed as string due to lack of support for float values in k8s controller runtime** +* `parallel` - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). + Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. + The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. + The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace", "!keyspace.table_prefix_*"]` +used to include or exclude keyspaces from repair. +* `smallTableThreshold` - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units `[B, MiB, GiB, TiB]` (default `"1GiB"`). + +Backups: + +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - Optional field. Specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. the number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1","!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace","!keyspace.table_prefix_*"]` used to include or exclude keyspaces from backup. +* `location` - Optional field. A list of backup locations in the format `[:]:` ex. `s3:my-bucket`. +The `:` part is optional and is only needed when different datacenters are being used to upload data to different locations. +`` Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are `s3` and `gcs`. +* `rateLimit` - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format `[:]`. +The `:` part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100). +* `retention` - Optional field. The number of backups which are to be stored (default 3). +* `snapshotParallel` - Optional field. A list of snapshot parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set, the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. +* `uploadParallel` - Optional field. A list of upload parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. + + +### Datacenter Settings + +* `name`: Name of the datacenter. Usually, a datacenter corresponds to a region. +* `racks`: List of racks for the specific datacenter. + +### Rack Settings + +* `name`: Name of the rack. Usually, a rack corresponds to an availability zone. +* `members`: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don't call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node). +* `storage`: Defines the specs of the underlying storage. + * `capacity`: Capacity of the PersistentVolume to request. + * `storageClassName`: Optional field. [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes/) of PersistentVolume to request. +* `resources`: Defines the CPU and RAM resources for the Scylla Pods. + * `requests`: The minimum amount of resources needed to run a Scylla container. + * `cpu`: CPU requests. + * `memory`: RAM requests. + * `limits`: The maximum amount of resources that can be used by a Scylla container. + * `cpu`: CPU limits. + * `memory`: RAM limits. +* `agentResources`: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See `resources` for details. +* `volumes`: Optional field. Defines volumes available in Scylla Pod. See [details](https://kubernetes.io/docs/concepts/storage/volumes/). +* `volumeMounts`: Optional field. Defines which volumes will be attached to Scylla container. +* `agentVolumeMounts`: Optional field. Defines which volumes will be attached to Agent container. +* `scyllaConfig`: Optional field. name of custom config map which will be merged with Scylla config. +* `scyllaAgentConfig`: Optional field. name of custom secret which will be merged with Scylla Manager Agent config. +* `placement`: Optional field. Defines the placement of Scylla Pods. Has the following subfields: + * [`nodeAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature) + * [`podAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`podAntiAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`tolerations`](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration) diff --git a/stable/_sources/upgrade.md.txt b/stable/_sources/upgrade.md.txt new file mode 100644 index 00000000000..ab14157256b --- /dev/null +++ b/stable/_sources/upgrade.md.txt @@ -0,0 +1,184 @@ +# Upgrade of Scylla Operator + +This page describes Scylla Operator upgrade procedures. +There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps. + +## Upgrade via Helm + +Helm doesn't support managing CustomResourceDefinition resources ([#5871](https://github.com/helm/helm/issues/5871), [#7735](https://github.com/helm/helm/issues/7735)) +These are only created on first install and never updated. In order to update them, users have to do it manually. + +Replace `` with the name of your Helm release for Scylla Operator and replace `` with the version number you want to install: +1. Make sure Helm chart repository is up-to-date: + ``` + helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable + helm repo update + ``` +2. Update CRD resources. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + tmpdir=$( mktemp -d ) \ + && helm pull scylla-operator/scylla-operator --version --untar --untardir "${tmpdir}" \ + && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \ + | xargs kubectl apply + ``` +3. Update Scylla Operator + ``` + helm upgrade --version scylla-operator/scylla-operator + ``` + +## Upgrade via kubectl + +Replace `` with the version number you want to install: + +1. Checkout source code of version you want to use: + ``` + git checkout + ``` +2. Manifests use rolling minor version tag, you may want to pin it to specific version: + ``` + find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:^g" + ``` +3. Update Scylla Operator. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + kubectl apply -f deploy/operator + ``` + +--- + +## `v1.2.0` -> `v1.3.0` + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.3.0: + ``` + git checkout v1.3.0 + ``` +1. Update Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.1.0` -> `v1.2.0` + +1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones. + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.2.0: + ``` + git checkout v1.2.0 + ``` +1. Remove old scylla operator namespace - in our case it's called `scylla-operator-system`: + ``` + kubectl delete namespace scylla-operator-system --wait=true + ``` +1. Remove old webhooks: + ``` + kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration + kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration + ``` +1. Install Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.0.0` -> `v1.1.0` + +During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected. + +1. Get name of StatefulSet managing Scylla Operator + ```shell + kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager" + + NAME READY AGE + scylla-operator-controller-manager 1/1 95m + ``` + +1. Change probes and used container image by applying following patch: + ```yaml + spec: + template: + spec: + containers: + - name: manager + image: docker.io/scylladb/scylla-operator:1.1.0 + livenessProbe: + httpGet: + path: /healthz + port: 8080 + scheme: HTTP + readinessProbe: + $retainKeys: + - httpGet + httpGet: + path: /readyz + port: 8080 + scheme: HTTP + ``` + To apply above patch save it to file (`operator-patch.yaml` for example) and apply to Operator StatefulSet: + ```shell + kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)" + ``` + + +## `v0.3.0` -> `v1.0.0` + +***Note:*** There's an experimental migration procedure available [here](migration.md). + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common +kind which is easier to disambiguate. (`ScyllaCluster`). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide. + +1. Get list of existing Scylla clusters + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` +1. Delete each one of them + + ``` + kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster + ``` +1. Make sure you're on `v0.3.0` branch + ``` + git checkout v0.3.0 + ``` +1. Delete existing CRD and Operator + ``` + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0` version + ``` + git checkout v1.0.0 + ``` +1. Install new CRD and Scylla Operator + ``` + kubectl apply -f examples/common/operator.yaml + ``` +1. Migrate your existing Scylla Cluster definition. Change `apiVersion` and `kind` from: + ``` + apiVersion: scylla.scylladb.com/v1alpha1 + kind: Cluster + ``` + to: + ``` + apiVersion: scylla.scylladb.com/v1 + kind: ScyllaCluster + ``` +1. Once your cluster definition is ready, use `kubectl apply` to install fresh Scylla cluster. diff --git a/stable/_static/basic.css b/stable/_static/basic.css new file mode 100644 index 00000000000..bf18350b65c --- /dev/null +++ b/stable/_static/basic.css @@ -0,0 +1,906 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; 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+ margin-bottom: 10px; + margin-left: 30px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/stable/_static/check-solid.svg b/stable/_static/check-solid.svg new file mode 100644 index 00000000000..92fad4b5c0b --- /dev/null +++ b/stable/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/stable/_static/clipboard.min.js b/stable/_static/clipboard.min.js new file mode 100644 index 00000000000..54b3c463811 --- /dev/null +++ b/stable/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/stable/_static/copybutton.css b/stable/_static/copybutton.css new file mode 100644 index 00000000000..f1916ec7d1b --- /dev/null +++ b/stable/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/stable/_static/copybutton.js b/stable/_static/copybutton.js new file mode 100644 index 00000000000..2ea7ff3e217 --- /dev/null +++ b/stable/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/stable/_static/copybutton_funcs.js b/stable/_static/copybutton_funcs.js new file mode 100644 index 00000000000..dbe1aaad79c --- /dev/null +++ b/stable/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/stable/_static/css/main.css b/stable/_static/css/main.css new file mode 100644 index 00000000000..4ac01745289 --- /dev/null +++ b/stable/_static/css/main.css @@ -0,0 +1 @@ +@media 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for details. + * + */ + +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + +/** + * make the code below compatible with browsers without + * an installed firebug like debugger +if (!window.console || !console.firebug) { + var names = ["log", "debug", "info", "warn", "error", "assert", "dir", + "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", + "profile", "profileEnd"]; + window.console = {}; + for (var i = 0; i < names.length; ++i) + window.console[names[i]] = function() {}; +} + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} + +/** + * Small JavaScript module for the documentation. + */ +var Documentation = { + + init : function() { + this.fixFirefoxAnchorBug(); + this.highlightSearchWords(); + this.initIndexTable(); + this.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS : {}, + PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; }, + LOCALE : 'unknown', + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext : function(string) { + var translated = Documentation.TRANSLATIONS[string]; + if (typeof translated === 'undefined') + return string; + return (typeof translated === 'string') ? translated : translated[0]; + }, + + ngettext : function(singular, plural, n) { + var translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated === 'undefined') + return (n == 1) ? singular : plural; + return translated[Documentation.PLURALEXPR(n)]; + }, + + addTranslations : function(catalog) { + for (var key in catalog.messages) + this.TRANSLATIONS[key] = catalog.messages[key]; + this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')'); + this.LOCALE = catalog.locale; + }, + + /** + * add context elements like header anchor links + */ + addContextElements : function() { + $('div[id] > :header:first').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this headline')). + appendTo(this); + }); + $('dt[id]').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this definition')). + appendTo(this); + }); + }, + + /** + * workaround a firefox stupidity + * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075 + */ + fixFirefoxAnchorBug : function() { + if (document.location.hash && $.browser.mozilla) + window.setTimeout(function() { + document.location.href += ''; + }, 10); + }, + + /** + * highlight the search words provided in the url in the text + */ + highlightSearchWords : function() { + var params = $.getQueryParameters(); + var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : []; + if (terms.length) { + var body = $('div.body'); + if (!body.length) { + body = $('body'); + } + window.setTimeout(function() { + $.each(terms, function() { + body.highlightText(this.toLowerCase(), 'highlighted'); + }); + }, 10); + $('') + .appendTo($('#searchbox')); + } + }, + + /** + * init the domain index toggle buttons + */ + initIndexTable : function() { + var togglers = $('img.toggler').click(function() { + var src = $(this).attr('src'); + var idnum = $(this).attr('id').substr(7); + $('tr.cg-' + idnum).toggle(); + if (src.substr(-9) === 'minus.png') + $(this).attr('src', src.substr(0, src.length-9) + 'plus.png'); + else + $(this).attr('src', src.substr(0, src.length-8) + 'minus.png'); + }).css('display', ''); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) { + togglers.click(); + } + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords : function() { + $('#searchbox .highlight-link').fadeOut(300); + $('span.highlighted').removeClass('highlighted'); + var url = new URL(window.location); + url.searchParams.delete('highlight'); + window.history.replaceState({}, '', url); + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar : function() { + $('input[name=q]').first().focus(); + }, + + /** + * make the url absolute + */ + makeURL : function(relativeURL) { + return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL; + }, + + /** + * get the current relative url + */ + getCurrentURL : function() { + var path = document.location.pathname; + var parts = path.split(/\//); + $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() { + if (this === '..') + parts.pop(); + }); + var url = parts.join('/'); + return path.substring(url.lastIndexOf('/') + 1, path.length - 1); + }, + + initOnKeyListeners: function() { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + return; + + $(document).keydown(function(event) { + var activeElementType = document.activeElement.tagName; + // don't navigate when in search box, textarea, dropdown or button + if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT' + && activeElementType !== 'BUTTON') { + if (event.altKey || event.ctrlKey || event.metaKey) + return; + + if (!event.shiftKey) { + switch (event.key) { + case 'ArrowLeft': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var prevHref = $('link[rel="prev"]').prop('href'); + if (prevHref) { + window.location.href = prevHref; + return false; + } + break; + case 'ArrowRight': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var nextHref = $('link[rel="next"]').prop('href'); + if (nextHref) { + window.location.href = nextHref; + return false; + } + break; + case 'Escape': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.hideSearchWords(); + return false; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case '/': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.focusSearchBar(); + return false; + } + } + }); + } +}; + +// quick alias for translations +_ = Documentation.gettext; + +$(document).ready(function() { + Documentation.init(); +}); diff --git a/stable/_static/documentation_options.js b/stable/_static/documentation_options.js new file mode 100644 index 00000000000..724e3825774 --- /dev/null +++ b/stable/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '', + LANGUAGE: 'None', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + 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new file mode 100644 index 00000000000..7c2b4ebae0d --- /dev/null +++ b/stable/_static/img/icons/icon-alternator.svg @@ -0,0 +1 @@ + \ No newline at end of file diff --git a/stable/_static/img/icons/icon-apps.svg b/stable/_static/img/icons/icon-apps.svg new file mode 100644 index 00000000000..7e93612026b --- /dev/null +++ b/stable/_static/img/icons/icon-apps.svg @@ -0,0 +1 @@ + diff --git a/stable/_static/img/icons/icon-architecture.svg b/stable/_static/img/icons/icon-architecture.svg new file mode 100644 index 00000000000..67ebbc2f38c --- /dev/null +++ b/stable/_static/img/icons/icon-architecture.svg @@ -0,0 +1 @@ +icon-architecture diff --git a/stable/_static/img/icons/icon-benchmarks.svg b/stable/_static/img/icons/icon-benchmarks.svg new file mode 100644 index 00000000000..e1ce2c1d784 --- /dev/null +++ b/stable/_static/img/icons/icon-benchmarks.svg @@ -0,0 +1 @@ +icon-benchmarks diff --git a/stable/_static/img/icons/icon-blog.svg b/stable/_static/img/icons/icon-blog.svg new file 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execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.5.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.5 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2020-03-14 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting
or other required elements. + thead: [ 1, "
", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px"; + tr.style.height = "1px"; + trChild.style.height = "9px"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = parseInt( trStyle.height ) > 3; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( + dataPriv.get( cur, "events" ) || Object.create( null ) + )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script + if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Contributing to Scylla Operator

+
+

Prerequisites

+

To develop on scylla-operator, your environment must have the following:

+
    +
  1. Go 1.13

    +
      +
    • Make sure GOPATH is set to GOPATH=$HOME/go.

    • +
    +
  2. +
  3. Kustomize v3.1.0

  4. +
  5. kubebuilder v2.3.1

  6. +
  7. Docker

  8. +
  9. Git client installed

  10. +
  11. Github account

  12. +
+

To install all dependencies (Go, kustomize, kubebuilder, dep), simply run:

+
./install-dependencies.sh
+
+
+
+
+

Initial Setup

+
+

Create a Fork

+

From your browser navigate to http://github.com/scylladb/scylla-operator and click the “Fork” button.

+
+
+

Clone Your Fork

+

Open a console window and do the following:

+
# Create the scylla operator repo path
+mkdir -p $GOPATH/src/github.com/scylladb
+
+# Navigate to the local repo path and clone your fork
+cd $GOPATH/src/github.com/scylladb
+
+# Clone your fork, where <user> is your GitHub account name
+git clone https://github.com/<user>/scylla-operator.git
+
+
+
+
+

Add Upstream Remote

+

First you will need to add the upstream remote to your local git:

+
# Add 'upstream' to the list of remotes
+git remote add upstream https://github.com/scylladb/scylla-operator.git
+
+# Verify the remote was added
+git remote -v
+
+
+

Now you should have at least origin and upstream remotes. You can also add other remotes to collaborate with other contributors.

+
+
+
+

Development

+

To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch.

+
+

Building the project

+

You can build the project using the Makefile commands:

+
    +
  • Open the Makefile and change the IMG environment variable to a repository you have access to.

  • +
  • Run make docker-push and wait for the image to be built and uploaded in your repo.

  • +
+
+
+

Create a Branch

+

From a console, create a new branch based on your fork and start working on it:

+
# Ensure all your remotes are up to date with the latest
+git fetch --all
+
+# Create a new branch that is based off upstream master.  Give it a simple, but descriptive name.
+# Generally it will be two to three words separated by dashes and without numbers.
+git checkout -b feature-name upstream/master
+
+
+

Now you are ready to make the changes and commit to your branch.

+
+
+

Updating Your Fork

+

During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to rebase your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean.

+

Whenever you need to update your local repository, you never want to merge. You always will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (git stash save -u "<some description>").

+
git fetch --all
+git rebase upstream/master
+
+
+

Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the Git documentation, it will be well worth it. In a nutshell, rebasing does the following:

+
    +
  • “Unwinds” your local commits. Your local commits are removed temporarily from the history.

  • +
  • The latest changes from upstream are added to the history

  • +
  • Your local commits are re-applied one by one

  • +
  • If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase.

  • +
  • When done rebasing, you will see all of your commits in the history.

  • +
+
+
+
+

Submitting a Pull Request

+

Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream.

+

In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged.

+
+

Commit History

+

To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits.

+
# Inspect your commit history to determine if you need to squash commits
+git log
+
+# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean.
+# In this example, the last 5 commits will be opened in the git rebase tool.
+git rebase -i HEAD~5
+
+
+

Once your commit history is clean, ensure you have based on the latest upstream before you open the PR.

+
+
+

Commit messages

+

Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good!

+

If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed.

+

Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you’ve forgotten everything about what you just did, and you need to get up to speed quickly.

+

If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don’t want to close the associated issue just put #1234 and the change will get linked into the issue.

+

Here is an example of a short commit message:

+
sidecar: log on reconcile loop - fixes #1234
+
+
+

And here is an example of a longer one:

+

+api: now supports host networking (#1234)
+
+The operator CRD now has a "network" property that can be used to
+select host networking as well as setting the apropriate DNS policy.
+
+Fixes #1234
+
+
+
+
+

Submitting

+

Go to the Scylla Operator github to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR.

+

After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/eks.html b/stable/eks.html new file mode 100644 index 00000000000..756da3b1498 --- /dev/null +++ b/stable/eks.html @@ -0,0 +1,721 @@ + + + + + + + + + + + + + Deploying Scylla on EKS | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla on EKS

+

This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won’t work with different machine tiers. +It sets up the kubelets on EKS nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+
+# From inside the examples/eks folder
+cd examples/eks
+./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION"
+
+
+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

EKS Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+CLUSTER_NAME=scylla-demo
+
+
+
+
+

Creating an EKS cluster

+

For this guide, we’ll create an EKS cluster with the following:

+
    +
  • A NodeGroup of 3 i3-2xlarge Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having scylla-clusters toleration.

  • +
+
  - name: scylla-pool
+    instanceType: i3.2xlarge
+    desiredCapacity: 3
+    labels:
+      scylla.scylladb.com/node-type: scylla
+    taints:
+      role: "scylla-clusters:NoSchedule"
+    ssh:
+      allow: true
+    kubeletExtraConfig:
+      cpuManagerPolicy: static
+
+
+
    +
  • A NodeGroup of 4 c4.2xlarge Nodes to deploy cassandra-stress later on. These nodes will only accept pods having cassandra-stress toleration.

  • +
+
  - name: cassandra-stress-pool
+    instanceType: c4.2xlarge
+    desiredCapacity: 4
+    labels:
+      pool: "cassandra-stress-pool"
+    taints:
+      role: "cassandra-stress:NoSchedule"
+    ssh:
+      allow: true
+
+
+
    +
  • A NodeGroup of 1 i3.large Node, where the monitoring stack and operator will be deployed.

  • +
+
  - name: monitoring-pool
+    instanceType: i3.large
+    desiredCapacity: 1
+    labels:
+      pool: "monitoring-pool"
+    ssh:
+      allow: true
+
+
+
+
+
+

Prerequisites

+
+

Installing script third party dependencies

+

Script requires several dependencies:

+
    +
  • eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

  • +
  • kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/

  • +
+
+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting an EKS cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
eksctl delete cluster "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/generic.html b/stable/generic.html new file mode 100644 index 00000000000..de4631dad04 --- /dev/null +++ b/stable/generic.html @@ -0,0 +1,942 @@ + + + + + + + + + + + + + Deploying Scylla on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla on a Kubernetes Cluster

+

This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment:

+ +
+

Prerequisites

+ +
+
+

Running locally

+

Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and Minikube makes it a breeze.

+

We need to give minikube a little bit more resources than default so start minikube like this:

+
minikube start --cpus=6
+
+
+

Then make kubectl aware of this local installation like this:

+
eval $(minikube docker-env)
+
+
+
+
+

Download Scylla Operator

+

In this guide you will be using the examples and manifests from Scylla Operator repository, so start off by cloning it to your local machine.

+
git clone git@github.com:scylladb/scylla-operator.git
+cd scylla-operator
+
+
+
+
+

Deploy Cert Manager

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

This will install Cert Manager to provision a self-signed certificate.

+

Once it’s deployed, wait until Cert Manager is ready:

+
kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io
+kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook
+
+
+
+
+

Deploy Scylla Operator

+

Deploy the Scylla Operator using the following commands:

+
kubectl apply -f examples/common/operator.yaml
+
+
+

This will install the operator in namespace scylla-operator. +Wait until it’s ready:

+
kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
+kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
+
+
+

If you want to check the logs of the operator you can do so with:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+
+
+

Create and Initialize a Scylla Cluster

+

Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the clusters.scylla.scylladb.com resource. +Some of that resource’s values are configurable, so feel free to browse cluster.yaml and tweak the settings to your liking. +Full details for all the configuration options can be found in the Scylla Cluster CRD documentation.

+

When you are ready to create a Scylla cluster, simply run:

+
kubectl create -f examples/generic/cluster.yaml
+
+
+

We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment.

+
kubectl -n scylla get ScyllaCluster
+
+
+

Checking the pods that are created is as easy as:

+
kubectl -n scylla get pods
+
+
+

The output should be something like:

+
NAME                                    READY   STATUS    RESTARTS   AGE
+simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          9m49s
+simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          7m43s
+simple-cluster-us-east-1-us-east-1a-2   2/2     Running   0          6m46s
+
+
+

It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER as specified in cluster.yaml.

+

In the above example we have the following properties:

+
    +
  • CLUSTER_NAME: simple-cluster

  • +
  • DATACENTER_NAME: us-east-1

  • +
  • RACK_NAME: us-east-1a

  • +
  • INSTANCE_NUMBER: An automatically generated number attached to the pod name.

  • +
+

We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want.

+

To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in cluster.yaml:

+
kubectl -n scylla get pod -l app=scylla
+
+
+

You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run:

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+

Checking the logs of the running scylla instances can be done like this:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla
+
+
+
+

Configure host networking

+

To squeeze the most out of your deployment it is sometimes necessary to employ host networking. +To enable this the CRD allows for specifying a network parameter as such:

+
version: 4.0.0
+  agentVersion: 2.0.2
+  cpuset: true
+  network:
+    hostNetworking: true
+
+
+

This will result in hosts network to be used for the Scylla Stateful Set deployment.

+
+
+

Configure container kernel parameters

+

Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property sysctls that is a list of the desired key-value pairs to set.

+

For example: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls tofs.aio-max-nr=N.

+
spec:
+  sysctls:
+  - "fs.aio-max-nr=2097152"
+
+
+
+
+

Deploying Alternator

+

The operator is also capable of deploying Alternator instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the cluster.yaml file from this:

+
spec:
+  version: 4.0.0
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

to this:

+
spec:
+  version: 4.0.0
+  alternator:
+    port: 8000
+    writeIsolation: only_rmw_uses_lwt
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

You can specify whichever port you want.

+

You must provide desired write isolation, supported values are: “always”, “forbid_rmw”, “only_rmw_uses_lwt”. +Difference between those isolation levels can be found in Scylla Alternator documentation.

+

Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster.

+
+
+
+

Accessing the Database

+
    +
  • From kubectl:

  • +
+

To get a cqlsh shell in your new Cluster:

+
kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh
+> DESCRIBE KEYSPACES;
+
+
+
    +
  • From inside a Pod:

  • +
+

When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service’s name follows the convention <cluster-name>-client. +You can see this Service in your cluster by running:

+
kubectl -n scylla describe service simple-cluster-client
+
+
+

Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here’s an example using the Python Driver:

+
from cassandra.cluster import Cluster
+
+cluster = Cluster(['simple-cluster-client.scylla.svc'])
+session = cluster.connect()
+
+
+

If you are running the Alternator you can access the API on the port you specified using plain http.

+
+
+

Configure Scylla

+

The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called scylla.yaml that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration.

+
    +
  • Create a ConfigMap the default name that the operator uses is scylla-config:

  • +
+
kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml
+
+
+
    +
  • Wait for the mount to propagate and then restart the cluster:

  • +
+
kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a
+
+
+
    +
  • The new config should be applied automatically by the operator, check the logs to be sure.

  • +
+

Configuring cassandra-rackdc.properties is done by adding the file to the same mount as scylla.yaml.

+
kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f -
+
+
+

The operator will then apply the overridable properties prefer_local and dc_suffix if they are available in the provided mounted file.

+
+
+

Configure Scylla Manager Agent

+

The operator creates a second container for each scylla instance that runs Scylla Manager Agent. +This container serves as a sidecar and it’s the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups.

+

To configure the agent you just create a new secret called scylla-agent-config-secret and populate it with the contents in the scylla-manager-agent.yaml file like this:

+
kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml
+
+
+

See Scylla Manager Agent configuration for a complete reference of the Scylla Manager agent config file.

+
+

Scylla Manager Agent auth token

+

Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it’s empty. +To check which value is being used, decode content of <cluster-name>-auth-token secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart.

+
+
+
+

Set up monitoring

+

To set up monitoring using Prometheus and Grafana follow this guide.

+
+
+

Scale Up

+

The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale up a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • To add a new rack, append the racks list with a new rack. Remember to choose a different rack name for the new rack.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Benchmark with cassandra-stress

+

After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster.

+
+

Because cassandra-stress doesn’t scale well to multiple cores, we use multiple jobs with a small core count for each

+
+
# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each.
+# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec.
+hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000
+kubectl apply -f scripts/cassandra-stress.yaml
+
+
+

Make sure you set the proper arguments in case you have altered things such as name or namespace.

+
./hack/cass-stress-gen.py -h
+usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT]
+                          [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR]
+
+Generate cassandra-stress job templates for Kubernetes.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --num-jobs NUM_JOBS   number of Kubernetes jobs to generate - defaults to 1
+  --name NAME           name of the generated yaml file - defaults to cassandra-stress
+  --namespace NAMESPACE
+                        namespace of the cassandra-stress jobs - defaults to "default"
+  --scylla-version SCYLLA_VERSION
+                        version of scylla server to use for cassandra-stress - defaults to 4.0.0
+  --host HOST           ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc
+  --cpu CPU             number of cpus that will be used for each job - defaults to 1
+  --memory MEMORY       memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu
+  --ops OPS             number of operations for each job - defaults to 10000000
+  --threads THREADS     number of threads used for each job - defaults to 50 * cpu
+  --limit LIMIT         rate limit for each job - defaults to no rate-limiting
+  --connections-per-host CONNECTIONS_PER_HOST
+                        number of connections per host - defaults to number of cpus
+  --print-to-stdout     print to stdout instead of writing to a file
+  --nodeselector NODESELECTOR
+                        nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla
+
+
+

While the benchmark is running, open up Grafana and take a look at the monitoring metrics.

+

After the Jobs finish, clean them up with:

+
kubectl delete -f scripts/cassandra-stress.yaml
+
+
+
+
+

Scale Down

+

The operator supports scale down of a rack. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale down a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Clean Up

+

To clean up all resources associated with this walk-through, you can run the commands below.

+

NOTE: this will destroy your database and delete all of its associated data.

+
kubectl delete -f examples/generic/cluster.yaml
+kubectl delete -f examples/common/operator.yaml
+kubectl delete -f examples/common/cert-manager.yaml
+
+
+
+
+

Troubleshooting

+

If the cluster does not come up, the first step would be to examine the operator’s logs:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+

If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/genindex.html b/stable/genindex.html new file mode 100644 index 00000000000..f740ca5d8c5 --- /dev/null +++ b/stable/genindex.html @@ -0,0 +1,550 @@ + + + + + + + + + + + + + Index | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ + + +
+ + + + + +
+ + +
+ +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/gke.html b/stable/gke.html new file mode 100644 index 00000000000..249d1ecc966 --- /dev/null +++ b/stable/gke.html @@ -0,0 +1,759 @@ + + + + + + + + + + + + + Deploying Scylla on GKE | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla on GKE

+

This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+GCP_USER=$(gcloud config list account --format "value(core.account)")
+GCP_PROJECT=$(gcloud config list project --format "value(core.project)")
+GCP_ZONE=us-west1-b
+
+# From inside the examples/gke folder
+cd examples/gke
+./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE"
+
+# Example:
+# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b
+
+
+

:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region.

+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

Google Kubernetes Engine Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
GCP_USER=$( gcloud config list account --format "value(core.account)" )
+GCP_PROJECT=$( gcloud config list project --format "value(core.project)" )
+GCP_REGION=us-west1
+GCP_ZONE=us-west1-b
+CLUSTER_NAME=scylla-demo
+CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" )
+
+
+
+
+

Creating a GKE cluster

+

First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called systemconfig.yaml with the following content:

+
kubeletConfig:
+  cpuManagerPolicy: static
+
+
+

Then we’ll create a GKE cluster with the following:

+
    +
  1. A NodePool of 2 n1-standard-8 Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes.

    +
    gcloud container \
    +clusters create "${CLUSTER_NAME}" \
    +--cluster-version "${CLUSTER_VERSION}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-8" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--image-type "UBUNTU_CONTAINERD" \
    +--system-config-from-file=systemconfig.yaml \
    +--enable-stackdriver-kubernetes \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  2. +
  3. A NodePool of 2 n1-standard-32 Nodes to deploy cassandra-stress later on.

    +
    gcloud container --project "${GCP_PROJECT}" \
    +node-pools create "cassandra-stress-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--zone "${GCP_ZONE}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--node-taints role=cassandra-stress:NoSchedule \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  4. +
  5. A NodePool of 4 n1-standard-32 Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as raw block devices. It is important to disable autoupgrade and autorepair. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it’s better to handle upgrades manually, with more control over the process and error handling.

    +
    gcloud container \
    +node-pools create "scylla-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "4" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--local-nvme-ssd-block count="8" \
    +--node-taints role=scylla-clusters:NoSchedule \
    +--node-labels scylla.scylladb.com/node-type=scylla \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  6. +
+
+
+

Setting Yourself as cluster-admin

+
+

(By default GKE doesn’t give you the necessary RBAC permissions)

+
+

Get the credentials for your new cluster

+
gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}"
+
+
+

Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission container.clusterRoleBindings.create. +The easiest way to obtain this permission is to enable the Kubernetes Engine Admin role for your user in the GCP IAM web interface.

+
kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}"
+
+
+
+
+
+

Prerequisites

+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Deploy Scylla cluster

+

In order for the example to work you need to modify the cluster definition in the following way:

+
sed -i "s/<gcp_region>/${GCP_REGION}/g;s/<gcp_zone>/${GCP_ZONE}/g" examples/gke/cluster.yaml
+
+
+

This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created.

+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to install the operator and launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting a GKE cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/helm.html b/stable/helm.html new file mode 100644 index 00000000000..2a07e3224c8 --- /dev/null +++ b/stable/helm.html @@ -0,0 +1,915 @@ + + + + + + + + + + + + + Deploying Scylla stack using Helm Charts | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla stack using Helm Charts

+

In this example we will install Scylla stack on Kubernetes. This includes the following components:

+
    +
  • Scylla Operator

  • +
  • Scylla Manager

  • +
  • Scylla

  • +
+

We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator.

+
+

Prerequisites

+
    +
  • Kubernetes 1.16+

  • +
  • Helm 3+

  • +
+
+
+

TL;DR

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+kubectl apply -f examples/common/cert-manager.yaml 
+helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator
+helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager
+helm install scylla scylla/scylla --create-namespace --namespace scylla
+
+
+
+
+

Deploy Cert Manager

+

This step is optional if you want to use your own certificate. +If you don’t have one, make sure to not disable autogeneration using Scylla Operator Helm Chart.

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

Once it’s deployed, wait until all Cert Manager pods will enter into Running state:

+
kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s
+
+
+
+
+

Helm Chart repository

+

To install Scylla Helm Chart repository execute the following commands:

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+
+
+

Then you can search through repository, it should contain at least three Helm charts:

+
helm search repo scylla
+NAME                   CHART VERSION   APP VERSION     DESCRIPTION                                       
+scylla/scylla          1.0.1           v1.0.1          Scylla is a close-to-the-hardware rewrite of Ca...
+scylla/scylla-manager  1.0.1           v1.0.1          Scylla Manager automates database operations.     
+scylla/scylla-operator 1.0.1           v1.0.1          Scylla Operator is a Kubernetes Operator for ma...
+
+
+

All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit.

+
+
+

Scylla Operator Chart

+

This chart is very simple, most interesting customizable fields are image, resources and webhook. +All others can be looked up in Chart source in Scylla Operator repository.

+
+

image

+

Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change pullPolicy if default one does not +fullfill your needs. In Kubernetes documentation you +can read more about different pull policies.

+

Image URL will be composed based on these fields in follwing pattern: +repository/scylla-operator:tag

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+
+
+

resources

+

You can customize how much resources will be allocated for Operator pods via resource field:

+
resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 32Mi
+
+
+

To read more about resource specification, follow Kubernetes documentation.

+
+
+

webhook

+

Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate.

+

createSelfSignedCertificate specifies whether a self-signed certificate should be created using Cert Manager +certificateSecretName: name of a secret containing custom certificate.

+
webhook:
+  createSelfSignedCertificate: true
+  certificateSecretName: ""
+
+
+
+
+

Customization

+

You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values.

+

You can find an example in Scylla Operator repository under examples/helm/values.operator.yaml

+
+
+

Installation

+

To deploy Scylla Operator using customized values file execute the following:

+
helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator
+
+
+
+
+
+

Scylla Helm Chart

+

Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it.

+
+

Customization

+

Versions of images used in the cluster can be set via scyllaImage and agentImage

+
scyllaImage:
+  repository: scylladb/scylla
+  tag: 4.3.0
+
+agentImage:
+  repository: scylladb/scylla-manager-agent
+  tag: 2.2.1
+
+
+

A minimal Scylla cluster can be expressed as:

+
datacenter: us-east-1
+racks:
+- name: us-east-1b
+  members: 2
+  storage:
+    capacity: 5G
+  resources:
+    limits:
+      cpu: 1
+      memory: 1Gi
+    requests:
+      cpu: 1
+      memory: 1Gi
+
+
+

Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory.

+

For other customizable fields, please refer to ScyllaCluster CRD definition. +CRD Rack Spec and Helm Chart Rack should have the same fields.

+
+
+

Installation

+

To deploy Scylla cluster using customzied values file execute the following command:

+
helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla
+
+
+

Scylla Operator will provision this cluster on your K8s environment.

+
+
+
+

Scylla Manager Helm Chart

+

Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster.

+

To read more about Scylla Manager see Manager guide.

+
+

Scylla Manager

+

To set version of used Scylla Manager you can use image field:

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: 2.2.1
+
+
+

To control how many resources are allocated for Scylla Manager use resource field:

+
resources:
+  limits:
+    cpu: 500m
+    memory: 500Mi
+  requests:
+    cpu: 500m
+    memory: 500Mi
+
+
+
+
+

Scylla Manager Controller

+

Similarly Scylla Manager Controller image can be customized:

+
controllerImage:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+

And allocated resources:

+
controllerResources:
+  limits:
+    cpu: 100m
+    memory: 30Mi
+  requests:
+    cpu: 100m
+    memory: 20Mi
+
+
+
+
+

Scylla

+

To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It’s definition should land as a scylla field.

+
+
+

Customization

+

All others customizable fields can be looked up in Chart source in Scylla Operator repository.

+
+
+

Installation

+

To deploy Scylla Manager using customized values file execute the following command:

+
helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager
+
+
+
+
+
+

Results

+

Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn’t it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces.

+

Scylla Operator:

+
$ kubectl -n scylla-operator get all
+
+NAME                                   READY   STATUS    RESTARTS   AGE
+pod/scylla-operator-5dbcb54f5c-vjm4m   1/1     Running   0          51s
+pod/scylla-operator-5dbcb54f5c-wfjbw   1/1     Running   0          51s
+
+NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
+service/scylla-operator-webhook   ClusterIP   10.105.207.130   <none>        443/TCP   51s
+
+NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-operator   2/2     2            2           51s
+
+NAME                                         DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-operator-5dbcb54f5c   2         2         2       51s
+
+
+

Operator is running!

+

Scylla Manager:

+
$ kubectl -n scylla-manager get all 
+
+NAME                                             READY   STATUS    RESTARTS   AGE
+pod/scylla-manager-669db64dd-bcm4v               1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-drbth   1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-rhwqx   1/1     Running   0          89s
+
+NAME                            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
+service/scylla-manager          ClusterIP   10.105.231.53   <none>        80/TCP,5090/TCP     89s
+service/scylla-manager-client   ClusterIP   None            <none>        9180/TCP,5090/TCP   89s
+
+NAME                                        READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-manager              1/1     1            1           89s
+deployment.apps/scylla-manager-controller   2/2     2            2           89s
+
+NAME                                                   DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-manager-669db64dd               1         1         1       89s
+replicaset.apps/scylla-manager-controller-844ccc56c4   2         2         2       89s
+
+
+

Good to go, ready to serve!

+

Scylla itself:

+
$ kubectl -n scylla get all        
+
+NAME                                READY   STATUS    RESTARTS   AGE
+pod/scylla-us-east-1-us-east-1b-0   2/2     Running   0          5m58s
+pod/scylla-us-east-1-us-east-1b-1   2/2     Running   0          4m29s
+
+NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
+service/scylla-client                   ClusterIP   None           <none>        9180/TCP,5090/TCP                                                 5m59s
+service/scylla-us-east-1-us-east-1b-0   ClusterIP   10.43.149.92   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   5m58s
+service/scylla-us-east-1-us-east-1b-1   ClusterIP   10.43.49.0     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   4m29s
+
+NAME                                           READY   AGE
+statefulset.apps/scylla-us-east-1-us-east-1b   2/2     5m59s
+
+
+

Two running nodes, exactly what we were asking for.

+
+
+

Monitoring

+

To spin up a Prometheus monitoring refer to monitoring guide.

+

Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor:

+
serviceMonitor:
+  create: false
+
+
+

Change create to true and update your current deployment using:

+
helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml
+
+
+

Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics.

+
+
+

Cleanup

+

To remove these applications you can simply uninstall them using Helm CLI:

+
helm uninstall scylla -n scylla
+helm uninstall scylla-manager -n scylla-manager
+helm uninstall scylla-operator -n scylla-operator
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/index.html b/stable/index.html new file mode 100644 index 00000000000..96f18589084 --- /dev/null +++ b/stable/index.html @@ -0,0 +1,594 @@ + + + + + + + + + + + + + Scylla Operator Documentation | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Scylla Operator Documentation

+
+
+

Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades.

+_images/logo.png +

For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University.

+

scylla-operator is a Kubernetes Operator for managing Scylla clusters.

+

Currently it supports:

+
    +
  • Deploying multi-zone clusters

  • +
  • Scaling up or adding new racks

  • +
  • Scaling down

  • +
  • Monitoring with Prometheus and Grafana

  • +
  • Integration with Scylla Manager

  • +
  • Dead node replacement

  • +
  • Version Upgrade

  • +
  • Backup

  • +
  • Repairs

  • +
  • Autohealing

  • +
  • Monitoring with Prometheus and Grafana

  • +
+

Choose a topic to begin:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/known-issues.html b/stable/known-issues.html new file mode 100644 index 00000000000..5c0446994c7 --- /dev/null +++ b/stable/known-issues.html @@ -0,0 +1,591 @@ + + + + + + + + + + + + + Known issues | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Known issues

+
+

Scylla Manager does not boot up on Minikube

+

If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for TRUNCATE queries.

+
+
+

TRUNCATE queries does not work on Minikube

+

The TRUNCATE queries requires hairpinning to be enabled. On minikube this is disabled by default.

+

To fix it execute the following command:

+
minikube ssh sudo ip link set docker0 promisc on
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/manager.html b/stable/manager.html new file mode 100644 index 00000000000..d4bac06a088 --- /dev/null +++ b/stable/manager.html @@ -0,0 +1,802 @@ + + + + + + + + + + + + + Deploying Scylla Manager on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla Manager on a Kubernetes Cluster

+

Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way.

+

Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager Proprietary Software License Agreement for details.

+
+

Prerequisites

+ +
+
+

Architecture

+

Scylla Manager in K8s consist of:

+
    +
  • Dedicated Scylla Cluster

    +

    Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace.

    +
  • +
  • Scylla Manager Controller

    +

    Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states.

    +
      +
    1. What user wants - task definition in CRD.

    2. +
    3. What Controller registered - Task name to Task ID mapping - CRD status.

    4. +
    5. Scylla Manager task listing - internal state of Scylla Manager.

    6. +
    +

    When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling.

    +
  • +
  • Scylla Manager

    +

    Regular Scylla Manager, the same used in cloud and bare metal deployments.

    +
  • +
+
+
+

Deploy Scylla Manager

+

Deploy the Scylla Manager using the following commands:

+
kubectl apply -f examples/common/manager.yaml
+
+
+

This will install the Scylla Manager in the scylla-manager namespace. +You can check if the Scylla Manager is up and running with:

+
kubectl -n scylla-manager get pods
+NAME                                               READY   STATUS    RESTARTS   AGE
+scylla-manager-cluster-manager-dc-manager-rack-0   2/2     Running   0          37m
+scylla-manager-controller-0                        1/1     Running   0          28m
+scylla-manager-scylla-manager-7bd9f968b9-w25jw     1/1     Running   0          37m
+
+
+

As you can see there are three pods:

+
    +
  • scylla-manager-cluster-manager-dc-manager-rack-0 - is a single node Scylla cluster.

  • +
  • scylla-manager-controller-0 - Scylla Manager Controller.

  • +
  • scylla-manager-scylla-manager-7bd9f968b9-w25jw - Scylla Manager.

  • +
+

To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command:

+
kubectl -n scylla-manager logs scylla-manager-controller-0
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+
+
+

To check logs of Scylla Manager itself, use following command:

+
kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+
+
+

If there are no errors in the logs, let’s spin a Scylla Cluster.

+
+
+

Cluster registration

+

When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster.

+

See generic tutorial to spawn your cluster.

+

Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager.

+

Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager.

+
kubectl -n scylla describe Cluster
+
+[...]
+Status:
+ Manager Id:  d1d532cd-49f2-4c97-9263-25126532803b
+ Racks:
+   us-east-1a:
+     Members:        3
+     Ready Members:  3
+     Version:        4.0.0
+
+
+

You can use this ID to talk to Scylla Manager using sctool CLI installed in Scylla Manager Pod. +You can also use Cluster name in namespace/cluster-name format.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator).

+

In this task listing we can see CQL and REST healthchecks.

+
+
+

Task scheduling

+

You can either define tasks prior Cluster creation, or for existing Cluster. +Let’s edit already running cluster definition to add repair and backup task.

+
kubectl -n scylla edit Cluster simple-cluster
+
+
+

Add following task definition to Cluster spec:

+
  repairs:
+    - name: "users repair"
+      keyspace: ["users"]
+      interval: "1d"
+  backup:
+    - name: "weekly backup"
+      location: ["s3:cluster-backups"]
+      retention: 3
+      interval: "7d"
+    - name: "daily backup"
+      location: ["s3:cluster-backups"]
+      retention: 7
+      interval: "1d"
+
+
+

For full task definition configuration consult Scylla Cluster CRD.

+

Note: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up.

+

Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372                 │ -L s3:cluster-backups  --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d)  │ NEW    │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a                 │                                      │ 23 Sep 20 14:38:42 CEST        │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly.

+

To check progress of run you can use following command:

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a
+Status:         RUNNING
+Start time:     23 Sep 20 14:38:42 UTC
+Duration:       13s
+Progress:       2.69%
+Datacenters:
+  - us-east-1
++--------------------+-------+
+| system_auth        | 8.06% |
+| system_distributed | 0.00% |
+| system_traces      | 0.00% |
++--------------------+-------+
+
+
+

Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing.

+
+
+

Clean Up

+

To clean up all resources associated with Scylla Manager, you can run the commands below.

+

NOTE: this will destroy your Scylla Manager database and delete all of its associated data.

+
kubectl delete -f examples/common/manager.yaml
+
+
+
+
+

Troubleshooting

+

Manager is not running

+

If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs:

+
kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller
+kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

My task wasn’t scheduled

+

If your task wasn’t scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs.

+

Example:

+

Following status describes error when backup task cannot be scheduled, due to lack of access to bucket:

+
Status:
+  Backups:
+    Error:     create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug"
+    Id:        00000000-0000-0000-0000-000000000000
+    Interval:  0
+    Location:
+      s3:manager-test
+    Name:         adhoc backup
+    Num Retries:  3
+    Retention:    3
+    Start Date:   now
+  Manager Id:     2b9dbe8c-9daa-4703-a66d-c29f63a917c8
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.0.0
+
+
+

Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status.

+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/migration.html b/stable/migration.html new file mode 100644 index 00000000000..5fbf5433a48 --- /dev/null +++ b/stable/migration.html @@ -0,0 +1,737 @@ + + + + + + + + + + + + + Version migrations | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Version migrations

+
+

v0.3.0 -> v1.0.0 migration

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common kind +which is easier to disambiguate (ScyllaCluster). +This change is backward incompatible, which means manual migration is needed.

+

This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the upgrade guide where full deletion is requested, this procedure shouldn’t cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn’t run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first.

+

Read the whole procedure and make sure you understand what is going on before executing any of the commands!

+

In case of any issues or questions regarding this procedure, you’re welcomed on our Scylla Users Slack +on #kubernetes channel.

+
+
+

Procedure

+
    +
  1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +

    All below commands will use scylla namespace and simple-cluster as a cluster name.

    +
  2. +
  3. Make sure you’re using v1.0.0 tag:

    +
    git checkout v1.0.0
    +
    +
    +
  4. +
  5. Upgrade your cert-manager to v1.0.0. If you installed it from a static file from this repo, simply execute the following:

    +
     kubectl apply -f examples/common/cert-manager.yaml
    +
    +
    +

    If your cert-manager was installed in another way, follow official instructions on cert-manager website.

    +
  6. +
  7. examples/common/operator.yaml file contains multiple resources. Extract only CustomResourceDefinition to separate file.

  8. +
  9. Install v1.0.0 CRD definition from file created in the previous step:

    +
    kubectl apply -f examples/common/crd.yaml
    +
    +
    +
  10. +
  11. Save your existing simple-cluster Cluster definition to a file:

    +
    kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml
    +
    +
    +
  12. +
  13. Migrate Kind and ApiVersion to new values using:

    +
    sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml
    +sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml
    +
    +
    +
  14. +
  15. Install migrated CRD instance

    +
    kubectl apply -f existing-cluster.yaml
    +
    +
    +

    At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator.

    +
  16. +
  17. Get UUID of newly created ScyllaCluster resource:

    +
    kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}"
    +
    +12a3678d-8511-4c9c-8a48-fa78d3992694
    +
    +
    +

    Save output UUID somewhere, it will be referred as <new-cluster-uid> in commands below.

    +

    Depending on your shell, you might get additional ‘%’ sign at the end of UUID, make sure to remove it!

    +
  18. +
  19. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters:

    +
    kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]'
    +
    +
    +

    Amend role name according to your cluster name, it should look like <scylla-cluster-name>-member.

    +
  20. +
  21. Get a list of all Services associated with your cluster. First get list of all services:

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          109m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   108m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   106m
    +
    +
    +
  22. +
  23. For each service, change its ownerReference to point to new CRD instance:

    +
     kubectl -n scylla patch svc <cluster-svc-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-svc-name> with Service name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  24. +
  25. Get a list of all Services again to see if none was deleted. Check also “Age” column, it shouldn’t be lower than previous result.

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          110m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   110m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   107m
    +
    +
    +
  26. +
  27. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  28. +
  29. For each StatefulSet from previous step, change its ownerReference to point to new CRD instance.

    +
     kubectl -n scylla patch sts <cluster-sts-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  30. +
  31. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. +Checkout v0.3.0 version, and remove Scylla Operator, and old CRD:

    +
     git checkout v0.3.0
    + kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  32. +
  33. Checkout v1.0.0, and install upgraded Scylla Operator:

    +
     git checkout v1.0.0
    + kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  34. +
  35. Wait until Scylla Operator boots up:

    +
     kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s
    +
    +
    +
  36. +
  37. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  38. +
  39. For each StatefulSet from previous step, change its sidecar container image to v1.0.0, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one.

    +
    kubectl -n scylla patch sts <cluster-sts> --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +kubectl -n scylla rollout status sts <cluster-sts>
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name.

    +
  40. +
  41. If you’re using Scylla Manager, bump Scylla Manager Controller image to v1.0.0

    +
     kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +
    +
    +
  42. +
  43. Your Scylla cluster is now migrated to v1.0.0.

  44. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/monitoring.html b/stable/monitoring.html new file mode 100644 index 00000000000..09a54c067dc --- /dev/null +++ b/stable/monitoring.html @@ -0,0 +1,784 @@ + + + + + + + + + + + + + Monitoring | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Monitoring

+

Scylla Operator 1.8 introduced a new API resource ScyllaDBMonitoring, allowing users to deploy a managed monitoring +setup for their Scylla Clusters.

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: ScyllaDBMonitoring
+metadata:
+  name: example
+spec:
+  type: Platform
+  endpointsSelector:
+    matchLabels:
+      app.kubernetes.io/name: scylla
+      scylla-operator.scylladb.com/scylla-service-type: identity
+      scylla/cluster: replace-with-your-scyllacluster-name
+  components:
+    prometheus:
+      storage:
+        volumeClaimTemplate:
+          spec:
+            resources:
+              requests:
+                storage: 1Gi
+    grafana:
+      exposeOptions:
+        webInterface:
+          ingress:
+            ingressClassName: haproxy
+            dnsDomains:
+            - test-grafana.test.svc.cluster.local
+            annotations:
+              haproxy-ingress.github.io/ssl-passthrough: "true"
+
+
+

For details, refer to the below command:

+
$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1
+
+
+
+

Deploy managed monitoring

+

Note: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions.

+
+

Requirements

+

Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see:

+ +

The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps.

+
+

Deploy Prometheus Operator

+

Deploy Prometheus Operator using kubectl:

+
$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator
+
+
+
+
Wait for Prometheus Operator to roll out
+
$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator
+deployment "prometheus-operator" successfully rolled out
+
+
+
+
+
+

Deploy HAProxy Ingress

+

Deploy HAProxy Ingress using kubectl:

+
$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress
+
+
+
+
Wait for HAProxy Ingress to roll out
+
$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress
+deployment "haproxy-ingress" successfully rolled out
+
+
+
+
+
+
+

Deploy ScyllaDBMonitoring

+

First, update the endpointsSelector in examples/monitoring/v1alpha1/scylladbmonitoring.yaml with a label +matching your ScyllaCluster instance name.

+

Deploy the monitoring setup using kubectl:

+
$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml
+
+
+

Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources.

+
+

Wait for ScyllaDBMonitoring to roll out

+
$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+
+
+
+

Wait for Prometheus to roll out

+
$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example
+statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb...
+
+
+
+
+

Wait for Grafana to roll out

+
$ kubectl rollout status --timeout=5m deployments.apps/example-grafana
+deployment "example-grafana" successfully rolled out
+
+
+
+
+
+

Accessing Grafana

+

For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller’s IP address but most clients and tools allow setting the SNI field manually.

+
+
+

Prerequisites

+

To access Grafana, you first need to collect the serving CA and the credentials.

+
$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )"
+$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )"
+$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )"
+
+
+
+
+

Connecting through Ingress using a resolvable domain

+

In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like *.app.mydomain pointing to the Ingress controller’s external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller’s A record.

+

Note: The ScyllaDBMonitoring example creates an Ingress object with test-grafana.test.svc.cluster.local DNS domain that you should adjust to your domain. Below examples use example-grafana.apps.mydomain.

+

Note: To test a resolvable domain from your machine without creating DNS records, you can adjust /etc/hosts or similar.

+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+

Connecting through Ingress using an unresolvable domain

+

To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller’s IP that can be resolved externally. Again, there are many ways to do so beyond the below examples.

+

Unless stated otherwise, we assume your Ingress is running on port 443.

+
$ INGRESS_PORT=443
+
+
+
+

Variants

+
+
Ingress ExternalIP
+

When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address.

+
$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )"
+
+
+
+
+
Ingress NodePort
+

NodePort is slightly less convenient, but it’s available in development clusters as well.

+
$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )"
+$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )"
+
+
+
+
+
Connection
+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/nodeoperations/automatic-cleanup.html b/stable/nodeoperations/automatic-cleanup.html new file mode 100644 index 00000000000..58a341800f6 --- /dev/null +++ b/stable/nodeoperations/automatic-cleanup.html @@ -0,0 +1,576 @@ + + + + + + + + + + + + + Automatic cleanup and replacement in case when k8s node is lost | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Automatic cleanup and replacement in case when k8s node is lost

+

In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity.

+

When automaticOrphanedNodeCleanup flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/nodeoperations/index.html b/stable/nodeoperations/index.html new file mode 100644 index 00000000000..78789dd0d71 --- /dev/null +++ b/stable/nodeoperations/index.html @@ -0,0 +1,576 @@ + + + + + + + + + + + + + Node operations using Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Node operations using Scylla Operator

+
+
+

Choose a topic:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/nodeoperations/maintenance-mode.html b/stable/nodeoperations/maintenance-mode.html new file mode 100644 index 00000000000..5fbaf87c498 --- /dev/null +++ b/stable/nodeoperations/maintenance-mode.html @@ -0,0 +1,585 @@ + + + + + + + + + + + + + Maintenance mode | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+

Maintenance mode

+

When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive.

+

This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again.

+

To enable maintenance mode add scylla/node-maintenance label to service in front of Scylla Pod.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance=""
+
+
+

To disable, simply remove this label from service.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance-
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/nodeoperations/replace-node.html b/stable/nodeoperations/replace-node.html new file mode 100644 index 00000000000..39d3ebbc74c --- /dev/null +++ b/stable/nodeoperations/replace-node.html @@ -0,0 +1,659 @@ + + + + + + + + + + + + + Replacing a Scylla node | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+ + + + + + +
+

Replacing a Scylla node

+
+

Replacing a dead node

+

In the case of a host failure, it may not be possible to bring back the node to life.

+

Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth).

+

This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time

+

Procedure

+
    +
  1. Verify the status of the node using nodetool status command, the node with status DN is down and need to be replaced

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.63 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +DN  10.43.43.51    74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  2. +
  3. Identify service which is bound to down node by checking IP address

    +
    kubectl -n scylla get svc
    +NAME                                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                           AGE
    +simple-cluster-client                   ClusterIP   None            <none>        9180/TCP                                                          3h12m
    +simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.231.189   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h12m
    +simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.125.110   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h11m
    +simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.43.51     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h5m
    +
    +
    +
  4. +
  5. Drain node which we would like to replace using. This command may delete your data from local disks attached to given node!

    +
    kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data
    +
    +
    +

    Pod which will be replaced should enter the Pending state

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h21m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h19m
    +simple-cluster-us-east-1-us-east-1a-2   0/2     Pending   0          8m14s
    +
    +
    +
  6. +
  7. To being node replacing, add scylla/replace="" label to service bound to pod we are replacing.

    +
    kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace=""
    +
    +
    +

    Your failed Pod should be recreated on available k8s node

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h27m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h25m
    +simple-cluster-us-east-1-us-east-1a-2   1/2     Running   0          9s
    +
    +
    +

    Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. +After bootstraping is over, your new Pod should be ready to go. +Old one shouldn’t be no longer visible in nodetool status

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.62 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +UN  10.43.191.172  74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  8. +
  9. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. +You can use Scylla Manager to run the repair.

  10. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/nodeoperations/restore.html b/stable/nodeoperations/restore.html new file mode 100644 index 00000000000..0ee4f47c5b4 --- /dev/null +++ b/stable/nodeoperations/restore.html @@ -0,0 +1,647 @@ + + + + + + + + + + + + + Restore from backup | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+
+ + + + + + +
+

Restore from backup

+

This procedure will describe how to restore from backup taken using Scylla Manager to a fresh empty cluster of any size.

+

First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod.

+
sctool backup list -c <CLUSTER_ID> --all-clusters -L <BACKUP_LOCATION>
+
+
+

Where:

+
    +
  • CLUSTER_ID - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status.

  • +
  • BACKUP_LOCATION - is a location where backup is stored. For example, for bucket called backups stored in AWS S3, location is s3:backups.

  • +
+
sctool backup list -c simple-cluster --all-clusters -L s3:backups
+Snapshots:
+  - sm_20201227144037UTC (409MiB)
+  - sm_20201228145917UTC (434MiB)
+Keyspaces:
+  - users (9 tables)
+  - system_auth (2 tables)
+  - system_distributed (3 tables)
+  - system_schema (13 tables)
+  - system_traces (5 tables)
+
+
+

To get the list of files use:

+
sctool backup files -c <CLUSTER_ID> -L <BACKUP_LOCATION> -T <SNAPSHOT_TAG>
+
+
+

Where:

+
    +
  • SNAPSHOT_TAG - name of snapshot you want to restore.

  • +
+

Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example:

+
s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz      ./
+
+
+

To download this archive you can use AWS CLI tool aws s3 cp.

+

This archive contains a single CQL file for each keyspace in the backup.

+
tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz
+-rw------- 0/0           12671 2020-12-28 13:17 users.cql
+-rw------- 0/0            2216 2020-12-28 13:17 system_auth.cql
+-rw------- 0/0             921 2020-12-28 13:17 system_distributed.cql
+-rw------- 0/0           12567 2020-12-28 13:17 system_schema.cql
+-rw------- 0/0            4113 2020-12-28 13:17 system_traces.cql
+
+
+

Extract this archive and copy each schema file to one of the cluster Pods by:

+
kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla
+
+
+

To import schema simply execute:

+
kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql
+
+
+

Once the schema is recreated we can proceed to downloading data files.

+

First let’s save a list of snapshot files to file called backup_files.out:

+
kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out
+
+
+

We will be using sstableloader to restore data. sstableloader needs a specific directory structure to work namely: <keyspace>/<table>/<contents> +To create this directory structure and download all the files execute these commands:

+
mkdir snapshot
+cd snapshot
+# Create temporary directory structure.
+cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p
+# Download snapshot files.
+cat ../backup_files.out | xargs -n2 aws s3 cp
+
+
+

To load data into cluster pass cluster address to sstableloader together with path to data files and credentials:

+
sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password <password>
+
+
+

Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/nodeoperations/scylla-upgrade.html b/stable/nodeoperations/scylla-upgrade.html new file mode 100644 index 00000000000..b13fc3aa567 --- /dev/null +++ b/stable/nodeoperations/scylla-upgrade.html @@ -0,0 +1,658 @@ + + + + + + + + + + + + + Upgrading version of Scylla | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+
+ + + + +
+ +
+ +
+

Upgrading version of Scylla

+

To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition.

+

In this example cluster will be upgraded to version 4.4.5.

+
kubectl -n scylla patch ScyllaCluster simple-cluster  -p '{"spec":{"version": "4.4.5"}}' --type=merge
+
+
+

Operator supports two types of version upgrades:

+
    +
  1. Patch upgrade

  2. +
  3. Generic upgrade

  4. +
+

Patch upgrade

+

Patch upgrade is executed when only patch version change is detected according to semantic versioning format. +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one.

+

Example: 4.0.0 -> 4.0.1

+

Generic upgrade

+

Generic upgrades are executed for the non patch version changes.

+

Example: 4.0.0 -> 2020.1.0 or 4.0.0 -> 4.1.0 or even 4.0.0 -> nightly

+

User can observe current state of upgrade in ScyllaCluster status.

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+[...]
+Status:
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.1.9
+  Upgrade:
+    Current Node:         simple-cluster-us-east-1-us-east-1a-2
+    Current Rack:         us-east-1a
+    Data Snapshot Tag:    so_data_20201228135002UTC
+    From Version:         4.1.9
+    State:                validate_upgrade
+    System Snapshot Tag:  so_system_20201228135002UTC
+    To Version:           4.2.2
+
+
+

Each upgrade begins with taking a snapshot of system and system_schema keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under System Snapshot Tag.

+

Before nodes in rack are upgraded, underlying StatefulSet is changed to use OnDelete UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed.

+

When a node is being upgraded, maintenance mode is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under Data Snapshot Tag and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node.

+

Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version.

+

Current state of upgrade can be traced using Current Node, Current Rack and State status fields.

+
    +
  • Current Node shows which node is being upgraded.

  • +
  • Current Rack displays which rack is being upgraded.

  • +
  • State contain information at which stage upgrade is.

  • +
+

State can have following values:

+
    +
  • begin_upgrade - upgrade is starting

  • +
  • check_schema_agreement - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried.

  • +
  • create_system_backup - system keyspaces snapshot is being taken

  • +
  • find_next_rack - Operator finds out which rack must be upgraded next, decision is saved in Current Rack

  • +
  • upgrade_image_in_pod_spec - Image and UpgradeStrategy is upgraded in underlying StatefulSet

  • +
  • find_next_node - Operator finds out which node must be upgraded next, decision is saved in Current Node

  • +
  • enable_maintenance_mode - maintenance mode is being enabled

  • +
  • drain_node - node is being drained

  • +
  • backup_data - snapshot of data keyspaces is being taken

  • +
  • disable_maintenance_mode - maintenance mode is being disabled

  • +
  • delete_pod - Scylla Pod is being deleted

  • +
  • validate_upgrade - Operator validates if new pod enters Ready state and if Scylla version is upgraded

  • +
  • clear_data_backup - snapshot of data keyspaces is being removed

  • +
  • clear_system_backup - snapshot of system keyspaces is being removed

  • +
  • restore_upgrade_strategy - restore UpgradeStrategy in underlying StatefulSet

  • +
  • finish_upgrade - upgrade cleanup

  • +
+

Recovering from upgrade failure

+

Upgrade may get stuck on validate_upgrade stage. This happens when Scylla Pod refuses to properly boot up.

+

To continue with upgrade, first turn off operator by scaling Operator replicas to zero:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0
+
+
+

Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names.

+

Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2
+
+
+

Operator should continue upgrade process from where it left off.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/objects.inv b/stable/objects.inv new file mode 100644 index 00000000000..acd8f3649f3 --- /dev/null +++ b/stable/objects.inv @@ -0,0 +1,6 @@ +# Sphinx inventory version 2 +# Project: Scylla Operator +# Version: +# The remainder of this file is compressed using zlib. +xڅTMo +UoUonV4Dųe,>/,c1AhrxQj-?NI8NëIy@Ý6 {[ +mqI OABӉ}!th uhPG5$Z#~%kz\q?#kQ; Cˍl,kE^!9:M'FUgDž%tN0ʼn7hJFv*ʄ={Uט&?hlP7eUA>K4uU/Dtz/̽*E%$rC)Ql`$8`k\`| ExkjG`?Hmݺwu22Qnw8 TlBD +/^%W%hS߆kݗ#&~5Z%̜֊vLV!ݚIU=|WmhUZI\9OO`7׆0Z. lI;$V%'##ȍh&,S9l Sqrn_ \ No newline at end of file diff --git a/stable/performance.html b/stable/performance.html new file mode 100644 index 00000000000..d63dae40a37 --- /dev/null +++ b/stable/performance.html @@ -0,0 +1,660 @@ + + + + + + + + + + + + + Performance tuning | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+
+ + + + +
+ +
+ +
+

Performance tuning

+

Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes.

+
+

Node tuning

+

Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning.

+

Below example NodeConfig tunes nodes having scylla.scylladb.com/node-type=scylla label:

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: NodeConfig
+metadata:
+ name: cluster
+spec:
+ placement:
+   nodeSelector:
+     scylla.scylladb.com/node-type: scylla
+
+
+

For more details about new CRD use:

+
kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1
+
+
+

For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more.

+

Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node.

+

Scylla works most efficently when it’s pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares.

+

On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others.
We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively.

+

Tuning resources are created in a special namespace called scylla-operator-node-tuning.

+

The tuning is applied only to pods with Guaranteed QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions.

+
+
+

Kubernetes tuning

+

By default, the kubelet uses the CFS quota to enforce pod CPU limits.
When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static.

+

Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider.

+

Only pods within the Guaranteed QoS class) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won’t be part of the shared pool.

+

In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class:

+
    +
  • resource request and limits must be equal or only limits have to be provided

  • +
  • agentResources must be provided and their requests and limits must be equal, or only limits have to be provided

  • +
+

An example of such a ScyllaCluster that receives a Guaranteed QoS class is below:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: guaranteed-cluster
+  namespace: scylla
+spec:
+  version: 4.5.1
+  agentVersion: 2.5.2
+  datacenter:
+    name: us-east-1
+    racks:
+    - name: us-east-1a
+      members: 3
+      storage:
+        capacity: 500Gi
+      agentResources:
+        requests:
+          cpu: 1
+          memory: 1G
+        limits:
+          cpu: 1
+          memory: 1G
+      resources:
+        requests:
+          cpu: 4
+          memory: 16G
+        limits:
+          cpu: 4
+          memory: 16G
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/stable/releases.html b/stable/releases.html new file mode 100644 index 00000000000..da1e5980e8d --- /dev/null +++ b/stable/releases.html @@ -0,0 +1,827 @@ + + + + + + + + + + + + + Releases | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+ +
+ +
+

Releases

+
+

Schedule

+

We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates.

+ + + + + + + + + + + + + + + +
ReleaseCode freezeGeneral availability
1.102022-08-082021-08-15
+
+

Supported releases

+

We support the latest 2 releases of the operator to give everyone time to upgrade.

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ReleaseGeneral availabilitySupport ends
1.92023-07-04Release of 1.11
1.82023-01-25Release of 1.10
1.72022-01-272023-07-04
1.62021-12-032023-01-25
1.52021-09-162022-01-27
1.42021-08-102021-12-03
1.32021-06-172021-09-16
1.22021-05-062021-08-10
1.12021-03-222021-06-17
1.02021-01-212021-05-06
+

Backport policy

+

Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers.

+
+
+
+

CI/CD

+

We use GitHub actions for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite.

+
+

Automated promotions

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Git referenceTypeContainer image
masterbranchdocker.io/scylladb/scylla-operator:latest
vX.Ybranchdocker.io/scylladb/scylla-operator:X.Y
vX.Y.Ztagdocker.io/scylladb/scylla-operator:X.Y.Z
vX.Y.Z-alpha.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-alpha.N
vX.Y.Z-beta.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-beta.N
vX.Y.Z-rc.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-rc.N
+
+

Generally available

+

GA images aren’t build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate.

+
+
+
+

Support matrix

+

Support matrix table shows the version requirements for a particular scylla-operator version. Be sure to match these requirements, otherwise some functionality will not work.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
v1.9v1.8v1.7v1.6v1.5v1.4v1.3v1.2v1.1v1.0
Kubernetes>=1.21>=1.21>=1.20 && <1.25>=1.19.10 && <1.25>=1.19.10>=1.19.10>=1.19>=1.19>=1.11>=1.11
CRI APIv1v1alpha2v1alpha2v1alpha2
Scylla OS>=5.0>=5.0>=4.3>=4.3>=4.3>=4.3>=4.2>=4.2>=4.0>=4.0
Scylla Enterprise>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2020.1>=2020.1>=2020.1>=2020.1
Scylla Manager>=2.6>=2.6>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2
Scylla Monitoring>=4.0>=4.0>=3.0>=3.0>=1.0>=1.0>=1.0>=1.0>=1.0>=1.0
+
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+ + + + + + + \ No newline at end of file diff --git a/stable/scylla-cluster-crd.html b/stable/scylla-cluster-crd.html new file mode 100644 index 00000000000..5de46d9e4f7 --- /dev/null +++ b/stable/scylla-cluster-crd.html @@ -0,0 +1,799 @@ + + + + + + + + + + + + + Scylla Cluster CRD | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+ + + + +
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+ +
+

Scylla Cluster CRD

+

Scylla database clusters can be created and configured using the clusters.scylla.scylladb.com custom resource definition (CRD).

+

Please refer to the the user guide walk-through for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD.

+
+

Sample

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: simple-cluster
+  namespace: scylla
+spec:
+  version: 2.3.1
+  repository: scylladb/scylla
+  developerMode: true
+  cpuset: false
+  automaticOrphanedNodeCleanup: true
+  repairs:
+  - name: "weekly us-east-1 repair"
+    intensity: "2"
+    interval: "7d"
+    dc: ["us-east-1"]
+  backups:
+  - name: "daily users backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "1d"
+    keyspace: ["users"]
+  - name: "weekly full cluster backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "7d"
+  datacenter:
+    name: us-east-1
+    racks:
+      - name: us-east-1a
+        members: 3
+        storage:
+          capacity: 500G
+          storageClassName: local-raid-disks
+        resources:
+          requests:
+            cpu: 8
+            memory: 32Gi
+          limits:
+            cpu: 8
+            memory: 32Gi
+        placement:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: failure-domain.beta.kubernetes.io/region
+                    operator: In
+                    values:
+                      - us-east-1
+                  - key: failure-domain.beta.kubernetes.io/zone
+                    operator: In
+                    values:
+                      - us-east-1a
+          tolerations:
+            - key: role
+              operator: Equal
+              value: scylla-clusters
+              effect: NoSchedule
+
+
+
+
+

Settings Explanation

+
+

Cluster Settings

+
    +
  • version: The version of Scylla to use. It is used as the image tag to pull.

  • +
  • agentVersion: The version of Scylla Manager Agent to use. It is used as the image tag to pull.

  • +
  • repository: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • agentRepository: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • developerMode: Optional field. If it’s true, then Scylla is started in developer mode. This setting is for shared test/dev environments.

  • +
  • cpuset: Optional field. If it’s true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the static cpu policy and only specify limits in resources.

  • +
  • automaticOrphanedNodeCleanup: Optional field. Controls if automatic orphan node cleanup should be performed.

  • +
  • alternator: Optional field. Defines Alternator configuration.

    +
      +
    • port: Port on which to bind to Alternator API.

    • +
    • writeIsolation: required Desired write isolation.

    • +
    +
  • +
  • genericUpgrade: Optional field. Defines GenericUpgrade configuration.

    +
      +
    • failureStrategy: specifies which logic is executed when upgrade failure happens. Currently only Retry is supported.

    • +
    • pollInterval: specifies how often upgrade logic polls on state updates. +Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect +overall time spent during upgrade.

    • +
    +
  • +
  • datacenter: Datacenter definition.

  • +
  • sysctls: Optional field. Sysctl properties to be applied during initialization.

  • +
  • scyllaArgs: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it.

  • +
  • network: Optional field. Allows to customize network parameters.

    +
      +
    • hostNetworking: controls if host networking should be enabled.

    • +
    • dnsPolicy: controls Scylla Pod DNS Policy. See details.

    • +
    +
  • +
  • repairs: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
  • backups: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
+

In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups.

+
+
+

Scylla Manager settings

+

Tasks are scheduled only when Scylla Manager is deployed in K8s cluster.

+

Repairs:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. Task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. The number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1", "!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • failFast - Optional field. Stop repair on first error.

  • +
  • intensity - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. +If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). +Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. +Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. +For Scylla clusters that do not support row-level repair, intensity can be a decimal between (0,1). +In that case it specifies percent of shards that can be repaired in parallel on a repair master node. +For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. +Intensity is a number passed as string due to lack of support for float values in k8s controller runtime

  • +
  • parallel - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). +Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. +The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. +The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace", "!keyspace.table_prefix_*"] +used to include or exclude keyspaces from repair.

  • +
  • smallTableThreshold - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units [B, MiB, GiB, TiB] (default "1GiB").

  • +
+

Backups:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - Optional field. Specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. the number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1","!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace","!keyspace.table_prefix_*"] used to include or exclude keyspaces from backup.

  • +
  • location - Optional field. A list of backup locations in the format [<dc>:]<provider>:<name> ex. s3:my-bucket. +The <dc>: part is optional and is only needed when different datacenters are being used to upload data to different locations. +<name> Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are s3 and gcs.

  • +
  • rateLimit - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format [<dc>:]<limit>. +The <dc>: part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100).

  • +
  • retention - Optional field. The number of backups which are to be stored (default 3).

  • +
  • snapshotParallel - Optional field. A list of snapshot parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set, the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
  • uploadParallel - Optional field. A list of upload parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
+
+
+

Datacenter Settings

+
    +
  • name: Name of the datacenter. Usually, a datacenter corresponds to a region.

  • +
  • racks: List of racks for the specific datacenter.

  • +
+
+
+

Rack Settings

+
    +
  • name: Name of the rack. Usually, a rack corresponds to an availability zone.

  • +
  • members: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don’t call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node).

  • +
  • storage: Defines the specs of the underlying storage.

    +
      +
    • capacity: Capacity of the PersistentVolume to request.

    • +
    • storageClassName: Optional field. StorageClass of PersistentVolume to request.

    • +
    +
  • +
  • resources: Defines the CPU and RAM resources for the Scylla Pods.

    +
      +
    • requests: The minimum amount of resources needed to run a Scylla container.

      +
        +
      • cpu: CPU requests.

      • +
      • memory: RAM requests.

      • +
      +
    • +
    • limits: The maximum amount of resources that can be used by a Scylla container.

      +
        +
      • cpu: CPU limits.

      • +
      • memory: RAM limits.

      • +
      +
    • +
    +
  • +
  • agentResources: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See resources for details.

  • +
  • volumes: Optional field. Defines volumes available in Scylla Pod. See details.

  • +
  • volumeMounts: Optional field. Defines which volumes will be attached to Scylla container.

  • +
  • agentVolumeMounts: Optional field. Defines which volumes will be attached to Agent container.

  • +
  • scyllaConfig: Optional field. name of custom config map which will be merged with Scylla config.

  • +
  • scyllaAgentConfig: Optional field. name of custom secret which will be merged with Scylla Manager Agent config.

  • +
  • placement: Optional field. Defines the placement of Scylla Pods. Has the following subfields:

    + +
  • +
+
+
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\ No newline at end of file diff --git a/stable/sitemap.xml b/stable/sitemap.xml new file mode 100644 index 00000000000..d3d0ce43236 --- /dev/null +++ b/stable/sitemap.xml @@ -0,0 +1,2 @@ + +https://operator.docs.scylladb.com/stable/contributing.htmlhttps://operator.docs.scylladb.com/stable/eks.htmlhttps://operator.docs.scylladb.com/stable/generic.htmlhttps://operator.docs.scylladb.com/stable/gke.htmlhttps://operator.docs.scylladb.com/stable/helm.htmlhttps://operator.docs.scylladb.com/stable/index.htmlhttps://operator.docs.scylladb.com/stable/known-issues.htmlhttps://operator.docs.scylladb.com/stable/manager.htmlhttps://operator.docs.scylladb.com/stable/migration.htmlhttps://operator.docs.scylladb.com/stable/monitoring.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/automatic-cleanup.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/index.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/maintenance-mode.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/replace-node.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/restore.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/scylla-upgrade.htmlhttps://operator.docs.scylladb.com/stable/performance.htmlhttps://operator.docs.scylladb.com/stable/releases.htmlhttps://operator.docs.scylladb.com/stable/scylla-cluster-crd.htmlhttps://operator.docs.scylladb.com/stable/upgrade.htmlhttps://operator.docs.scylladb.com/stable/genindex.htmlhttps://operator.docs.scylladb.com/stable/404.htmlhttps://operator.docs.scylladb.com/stable/search.html \ No newline at end of file diff --git a/stable/upgrade.html b/stable/upgrade.html new file mode 100644 index 00000000000..b1a94f92844 --- /dev/null +++ b/stable/upgrade.html @@ -0,0 +1,786 @@ + + + + + + + + + + + + + Upgrade of Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Upgrade of Scylla Operator

+

This page describes Scylla Operator upgrade procedures.
There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps.

+
+

Upgrade via Helm

+

Helm doesn’t support managing CustomResourceDefinition resources (#5871, #7735)
These are only created on first install and never updated. In order to update them, users have to do it manually.

+

Replace <release_name> with the name of your Helm release for Scylla Operator and replace <version> with the version number you want to install:

+
    +
  1. Make sure Helm chart repository is up-to-date:

    +
    helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable
    +helm repo update
    +
    +
    +
  2. +
  3. Update CRD resources. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    tmpdir=$( mktemp -d ) \
    +  && helm pull scylla-operator/scylla-operator --version <version> --untar --untardir "${tmpdir}" \
    +  && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \
    +  | xargs kubectl apply
    +
    +
    +
  4. +
  5. Update Scylla Operator

    +
    helm upgrade --version <version> <release_name> scylla-operator/scylla-operator
    +
    +
    +
  6. +
+
+
+

Upgrade via kubectl

+

Replace <version> with the version number you want to install:

+
    +
  1. Checkout source code of version you want to use:

    +
    git checkout <version>
    +
    +
    +
  2. +
  3. Manifests use rolling minor version tag, you may want to pin it to specific version:

    +
    find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:<version>^g"
    +
    +
    +
  4. +
  5. Update Scylla Operator. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    kubectl apply -f deploy/operator
    +
    +
    +
  6. +
+
+
+
+

v1.2.0 -> v1.3.0

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.3.0:

    +
    git checkout v1.3.0
    +
    +
    +
  2. +
  3. Update Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  4. +
  5. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  6. +
+
+
+

v1.1.0 -> v1.2.0

+

1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones.

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.2.0:

    +
    git checkout v1.2.0
    +
    +
    +
  2. +
  3. Remove old scylla operator namespace - in our case it’s called scylla-operator-system:

    +
    kubectl delete namespace scylla-operator-system --wait=true
    +
    +
    +
  4. +
  5. Remove old webhooks:

    +
    kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration
    +kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration
    +
    +
    +
  6. +
  7. Install Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  8. +
  9. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  10. +
+
+
+

v1.0.0 -> v1.1.0

+

During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected.

+
    +
  1. Get name of StatefulSet managing Scylla Operator

    +
    kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager"
    +
    +NAME                                 READY   AGE
    +scylla-operator-controller-manager   1/1     95m
    +
    +
    +
  2. +
  3. Change probes and used container image by applying following patch:

    +
    spec:
    +  template:
    +    spec:
    +      containers:
    +      - name: manager
    +        image: docker.io/scylladb/scylla-operator:1.1.0
    +        livenessProbe:
    +          httpGet:
    +            path: /healthz
    +            port: 8080
    +            scheme: HTTP
    +        readinessProbe:
    +          $retainKeys:
    +          - httpGet
    +          httpGet:
    +            path: /readyz
    +            port: 8080
    +            scheme: HTTP
    +
    +
    +

    To apply above patch save it to file (operator-patch.yaml for example) and apply to Operator StatefulSet:

    +
    kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)"
    +
    +
    +
  4. +
+
+
+

v0.3.0 -> v1.0.0

+

Note: There’s an experimental migration procedure available here.

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common +kind which is easier to disambiguate. (ScyllaCluster). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide.

+
    +
  1. Get list of existing Scylla clusters

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +
  2. +
  3. Delete each one of them

    +
    kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster
    +
    +
    +
  4. +
  5. Make sure you’re on v0.3.0 branch

    +
    git checkout v0.3.0
    +
    +
    +
  6. +
  7. Delete existing CRD and Operator

    +
    kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  8. +
  9. Checkout v1.0.0 version

    +
    git checkout v1.0.0
    +
    +
    +
  10. +
  11. Install new CRD and Scylla Operator

    +
    kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  12. +
  13. Migrate your existing Scylla Cluster definition. Change apiVersion and kind from:

    +
    apiVersion: scylla.scylladb.com/v1alpha1
    +kind: Cluster
    +
    +
    +

    to:

    +
    apiVersion: scylla.scylladb.com/v1
    +kind: ScyllaCluster
    +
    +
    +
  14. +
  15. Once your cluster definition is ready, use kubectl apply to install fresh Scylla cluster.

  16. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/.buildinfo b/v1.10/.buildinfo new file mode 100644 index 00000000000..aba51a32231 --- /dev/null +++ b/v1.10/.buildinfo @@ -0,0 +1,4 @@ +# Sphinx build info version 1 +# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done. +config: d6a4203ea7866f6d3d2b3d0b3603e801 +tags: 645f666f9bcd5a90fca523b33c5a78b7 diff --git a/v1.10/.doctrees/contributing.doctree b/v1.10/.doctrees/contributing.doctree new file mode 100644 index 00000000000..f9aa6aa910e Binary files /dev/null and b/v1.10/.doctrees/contributing.doctree differ diff --git a/v1.10/.doctrees/eks.doctree b/v1.10/.doctrees/eks.doctree new file mode 100644 index 00000000000..c61d343b87c Binary files /dev/null and b/v1.10/.doctrees/eks.doctree differ diff --git a/v1.10/.doctrees/environment.pickle b/v1.10/.doctrees/environment.pickle new file mode 100644 index 00000000000..1ae84748f49 Binary files /dev/null and b/v1.10/.doctrees/environment.pickle differ diff --git a/v1.10/.doctrees/generic.doctree b/v1.10/.doctrees/generic.doctree new file mode 100644 index 00000000000..6fe11e4b977 Binary files /dev/null and b/v1.10/.doctrees/generic.doctree differ diff --git a/v1.10/.doctrees/gke.doctree 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index 00000000000..d0d2c7cecee --- /dev/null +++ b/v1.10/404.html @@ -0,0 +1,31 @@ + + + + + + + + + ScyllaDB + + + + + + + + + + + +
+

404

+

The ScyllaDB monster ate your page!

+

+ Home +

+
+ + + \ No newline at end of file diff --git a/v1.10/CNAME b/v1.10/CNAME new file mode 100644 index 00000000000..12aae904168 --- /dev/null +++ b/v1.10/CNAME @@ -0,0 +1 @@ +operator.docs.scylladb.com \ No newline at end of file diff --git a/v1.10/_images/logo.png b/v1.10/_images/logo.png new file mode 100644 index 00000000000..5bbfedad2ac Binary files /dev/null and b/v1.10/_images/logo.png differ diff --git a/v1.10/_sources/contributing.md.txt b/v1.10/_sources/contributing.md.txt new file mode 100644 index 00000000000..da5fc078732 --- /dev/null +++ b/v1.10/_sources/contributing.md.txt @@ -0,0 +1,155 @@ +# Contributing to Scylla Operator + +## Prerequisites + +To develop on scylla-operator, your environment must have the following: + +1. [Go 1.13](https://golang.org/dl/) + * Make sure [GOPATH](https://github.com/golang/go/wiki/SettingGOPATH) is set to `GOPATH=$HOME/go`. +2. [Kustomize v3.1.0](https://github.com/kubernetes-sigs/kustomize/releases/tag/v3.1.0) +3. [kubebuilder v2.3.1](https://github.com/kubernetes-sigs/kubebuilder/releases/tag/v2.3.1) +4. [Docker](https://docs.docker.com/install/) +5. Git client installed +6. Github account + +To install all dependencies (Go, kustomize, kubebuilder, dep), simply run: +```bash +./install-dependencies.sh +``` + +## Initial Setup + +### Create a Fork + +From your browser navigate to [http://github.com/scylladb/scylla-operator](http://github.com/scylladb/scylla-operator) and click the "Fork" button. + +### Clone Your Fork + +Open a console window and do the following: + +```bash +# Create the scylla operator repo path +mkdir -p $GOPATH/src/github.com/scylladb + +# Navigate to the local repo path and clone your fork +cd $GOPATH/src/github.com/scylladb + +# Clone your fork, where is your GitHub account name +git clone https://github.com//scylla-operator.git +``` + +### Add Upstream Remote + +First you will need to add the upstream remote to your local git: +```bash +# Add 'upstream' to the list of remotes +git remote add upstream https://github.com/scylladb/scylla-operator.git + +# Verify the remote was added +git remote -v +``` +Now you should have at least `origin` and `upstream` remotes. You can also add other remotes to collaborate with other contributors. + +## Development + +To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch. + +### Building the project + +You can build the project using the Makefile commands: +* Open the Makefile and change the `IMG` environment variable to a repository you have access to. +* Run `make docker-push` and wait for the image to be built and uploaded in your repo. + +### Create a Branch + +From a console, create a new branch based on your fork and start working on it: + +```bash +# Ensure all your remotes are up to date with the latest +git fetch --all + +# Create a new branch that is based off upstream master. Give it a simple, but descriptive name. +# Generally it will be two to three words separated by dashes and without numbers. +git checkout -b feature-name upstream/master +``` + +Now you are ready to make the changes and commit to your branch. + +### Updating Your Fork + +During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to `rebase` your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean. + +Whenever you need to update your local repository, you never want to merge. You **always** will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (`git stash save -u ""`). + +```bash +git fetch --all +git rebase upstream/master +``` + +Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the [Git documentation](https://git-scm.com/docs/git-rebase), it will be well worth it. In a nutshell, rebasing does the following: +- "Unwinds" your local commits. Your local commits are removed temporarily from the history. +- The latest changes from upstream are added to the history +- Your local commits are re-applied one by one +- If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase. +- When done rebasing, you will see all of your commits in the history. + +## Submitting a Pull Request + +Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream. + +In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged. + +### Commit History + +To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits. + +```bash +# Inspect your commit history to determine if you need to squash commits +git log + +# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean. +# In this example, the last 5 commits will be opened in the git rebase tool. +git rebase -i HEAD~5 +``` + +Once your commit history is clean, ensure you have based on the [latest upstream](#updating-your-fork) before you open the PR. + +### Commit messages + +Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good! + +If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed. + +Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you've forgotten everything about what you just did, and you need to get up to speed quickly. + +If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don't want to close the associated issue just put #1234 and the change will get linked into the issue. + +Here is an example of a short commit message: + +``` +sidecar: log on reconcile loop - fixes #1234 +``` + +And here is an example of a longer one: +``` + +api: now supports host networking (#1234) + +The operator CRD now has a "network" property that can be used to +select host networking as well as setting the apropriate DNS policy. + +Fixes #1234 +``` + +### Submitting + +Go to the [Scylla Operator github](https://www.github.com/scylladb/scylla-operator) to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR. + +After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically. diff --git a/v1.10/_sources/eks.md.txt b/v1.10/_sources/eks.md.txt new file mode 100644 index 00000000000..ecfe0f0d1bb --- /dev/null +++ b/v1.10/_sources/eks.md.txt @@ -0,0 +1,125 @@ +# Deploying Scylla on EKS + +This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won't work with different machine tiers. +It sets up the kubelets on EKS nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c + +# From inside the examples/eks folder +cd examples/eks +./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION" +``` + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### EKS Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c +CLUSTER_NAME=scylla-demo +``` + +#### Creating an EKS cluster + +For this guide, we'll create an EKS cluster with the following: + +* A NodeGroup of 3 `i3-2xlarge` Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having `scylla-clusters` toleration. + +``` + - name: scylla-pool + instanceType: i3.2xlarge + desiredCapacity: 3 + labels: + scylla.scylladb.com/node-type: scylla + taints: + role: "scylla-clusters:NoSchedule" + ssh: + allow: true + kubeletExtraConfig: + cpuManagerPolicy: static +``` + +* A NodeGroup of 4 `c4.2xlarge` Nodes to deploy `cassandra-stress` later on. These nodes will only accept pods having `cassandra-stress` toleration. + +``` + - name: cassandra-stress-pool + instanceType: c4.2xlarge + desiredCapacity: 4 + labels: + pool: "cassandra-stress-pool" + taints: + role: "cassandra-stress:NoSchedule" + ssh: + allow: true +``` + +* A NodeGroup of 1 `i3.large` Node, where the monitoring stack and operator will be deployed. +``` + - name: monitoring-pool + instanceType: i3.large + desiredCapacity: 1 + labels: + pool: "monitoring-pool" + ssh: + allow: true +``` + +### Prerequisites + +#### Installing script third party dependencies + +Script requires several dependencies: +- eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html +- kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/ + +#### Setting up nodes for ScyllaDB + +ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you'll first need to form a RAID array from those disks. +`NodeConfig` performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in [Performance tuning](performance.md) section of ScyllaDB Operator's documentation. + +Deploy `NodeConfig` to let it take care of the above operations: +``` +kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml +``` + +#### Deploying Local Volume Provisioner + +Afterwards, deploy ScyllaDB's [Local Volume Provisioner](https://github.com/scylladb/k8s-local-volume-provisioner), capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays. +``` +kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/ +kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml +``` + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting an EKS cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +eksctl delete cluster "${CLUSTER_NAME}" +``` diff --git a/v1.10/_sources/generic.md.txt b/v1.10/_sources/generic.md.txt new file mode 100644 index 00000000000..8a999e4d9d8 --- /dev/null +++ b/v1.10/_sources/generic.md.txt @@ -0,0 +1,375 @@ +# Deploying Scylla on a Kubernetes Cluster + +This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment: + +* [GKE](gke.md) + +## Prerequisites + +* A Kubernetes cluster +* A [Storage Class](https://kubernetes.io/docs/concepts/storage/storage-classes/) to provision [PersistentVolumes](https://kubernetes.io/docs/concepts/storage/persistent-volumes/). +* Helm 3 installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) if you need to install it. + Make sure that you enable the [stable repository](https://github.com/helm/charts#how-do-i-enable-the-stable-repository-for-helm-3) + +## Running locally + +Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and [Minikube](https://minikube.sigs.k8s.io/docs/) makes it a breeze. + +We need to give minikube a little bit more resources than default so start minikube like this: +```console +minikube start --cpus=6 +``` + +Then make kubectl aware of this local installation like this: +```console +eval $(minikube docker-env) +``` + +## Download Scylla Operator +In this guide you will be using the examples and manifests from [Scylla Operator repository](https://github.com/scylladb/scylla-operator), so start off by cloning it to your local machine. +```console +git clone git@github.com:scylladb/scylla-operator.git +cd scylla-operator +``` + +## Deploy Cert Manager +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` +This will install Cert Manager to provision a self-signed certificate. + +Once it's deployed, wait until Cert Manager is ready: + +```console +kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io +kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook +``` + +## Deploy Scylla Operator + +Deploy the Scylla Operator using the following commands: + +```console +kubectl apply -f examples/common/operator.yaml +``` + +This will install the operator in namespace `scylla-operator`. +Wait until it's ready: + +```console +kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator +``` + +If you want to check the logs of the operator you can do so with: + + ```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +## Create and Initialize a Scylla Cluster + +Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the `clusters.scylla.scylladb.com` resource. +Some of that resource's values are configurable, so feel free to browse `cluster.yaml` and tweak the settings to your liking. +Full details for all the configuration options can be found in the [Scylla Cluster CRD documentation](scylla-cluster-crd.md). + +When you are ready to create a Scylla cluster, simply run: + +```console +kubectl create -f examples/generic/cluster.yaml +``` + +We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment. + +```console +kubectl -n scylla get ScyllaCluster +``` + +Checking the pods that are created is as easy as: + +```console +kubectl -n scylla get pods +``` + +The output should be something like: + +```console +NAME READY STATUS RESTARTS AGE +simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 9m49s +simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 7m43s +simple-cluster-us-east-1-us-east-1a-2 2/2 Running 0 6m46s +``` + +It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: `CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER` as specified in `cluster.yaml`. + +In the above example we have the following properties: + + - CLUSTER_NAME: `simple-cluster` + - DATACENTER_NAME: `us-east-1` + - RACK_NAME: `us-east-1a` + - INSTANCE_NUMBER: An automatically generated number attached to the pod name. + +We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want. + +To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in `cluster.yaml`: + +```console +kubectl -n scylla get pod -l app=scylla +``` + +You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run: + +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +Checking the logs of the running scylla instances can be done like this: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla +``` + +### Configure host networking + +To squeeze the most out of your deployment it is sometimes necessary to employ [host networking](https://kubernetes.io/docs/concepts/services-networking/). +To enable this the CRD allows for specifying a `network` parameter as such: + +```yaml +version: 4.0.0 + agentVersion: 2.0.2 + cpuset: true + network: + hostNetworking: true +``` + +This will result in hosts network to be used for the Scylla Stateful Set deployment. + +### Configure container kernel parameters + +Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property `sysctls` that is a list of the desired key-value pairs to set. + +___For example___: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls to`fs.aio-max-nr=N`. + +```yaml +spec: + sysctls: + - "fs.aio-max-nr=2097152" +``` + +### Deploying Alternator + +The operator is also capable of deploying [Alternator](https://www.scylladb.com/alternator/) instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the `cluster.yaml` file from this: +```yaml +spec: + version: 4.0.0 + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +to this: +```yaml +spec: + version: 4.0.0 + alternator: + port: 8000 + writeIsolation: only_rmw_uses_lwt + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +You can specify whichever port you want. + +You must provide desired write isolation, supported values are: "always", "forbid_rmw", "only_rmw_uses_lwt". +Difference between those isolation levels can be found in Scylla Alternator documentation. + +Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster. + +## Accessing the Database + +* From kubectl: + +To get a cqlsh shell in your new Cluster: +```console +kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh +> DESCRIBE KEYSPACES; +``` + + +* From inside a Pod: + +When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service's name follows the convention `-client`. +You can see this Service in your cluster by running: +```console +kubectl -n scylla describe service simple-cluster-client +``` +Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here's an example using the [Python Driver](https://github.com/datastax/python-driver): +```python +from cassandra.cluster import Cluster + +cluster = Cluster(['simple-cluster-client.scylla.svc']) +session = cluster.connect() +``` + +If you are running the Alternator you can access the API on the port you specified using plain http. + +## Configure Scylla + +The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called `scylla.yaml` that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration. + +* Create a ConfigMap the default name that the operator uses is `scylla-config`: +```console +kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml +``` +* Wait for the mount to propagate and then restart the cluster: +```console +kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a +``` +* The new config should be applied automatically by the operator, check the logs to be sure. + +Configuring `cassandra-rackdc.properties` is done by adding the file to the same mount as `scylla.yaml`. +```console +kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f - +``` +The operator will then apply the overridable properties `prefer_local` and `dc_suffix` if they are available in the provided mounted file. + +## Configure Scylla Manager Agent + +The operator creates a second container for each scylla instance that runs [Scylla Manager Agent](https://hub.docker.com/r/scylladb/scylla-manager-agent). +This container serves as a sidecar and it's the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups. + +To configure the agent you just create a new secret called _scylla-agent-config-secret_ and populate it with the contents in the `scylla-manager-agent.yaml` file like this: +```console +kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml +``` + +See [Scylla Manager Agent configuration](https://docs.scylladb.com/operating-scylla/manager/2.0/agent-configuration-file/) for a complete reference of the Scylla Manager agent config file. + +### Scylla Manager Agent auth token + +Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it's empty. +To check which value is being used, decode content of `-auth-token` secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart. + +## Set up monitoring + +To set up monitoring using Prometheus and Grafana follow [this guide](monitoring.md). + +## Scale Up + +The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale up a rack, change the `Spec.Members` field of the rack to the desired value. +* To add a new rack, append the `racks` list with a new rack. Remember to choose a different rack name for the new rack. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Benchmark with cassandra-stress + +After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster. + +> Because cassandra-stress doesn't scale well to multiple cores, we use multiple jobs with a small core count for each + +```bash + +# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each. +# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec. +hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000 +kubectl apply -f scripts/cassandra-stress.yaml +``` + +Make sure you set the proper arguments in case you have altered things such as _name_ or _namespace_. + +```bash +./hack/cass-stress-gen.py -h +usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT] + [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR] + +Generate cassandra-stress job templates for Kubernetes. + +optional arguments: + -h, --help show this help message and exit + --num-jobs NUM_JOBS number of Kubernetes jobs to generate - defaults to 1 + --name NAME name of the generated yaml file - defaults to cassandra-stress + --namespace NAMESPACE + namespace of the cassandra-stress jobs - defaults to "default" + --scylla-version SCYLLA_VERSION + version of scylla server to use for cassandra-stress - defaults to 4.0.0 + --host HOST ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc + --cpu CPU number of cpus that will be used for each job - defaults to 1 + --memory MEMORY memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu + --ops OPS number of operations for each job - defaults to 10000000 + --threads THREADS number of threads used for each job - defaults to 50 * cpu + --limit LIMIT rate limit for each job - defaults to no rate-limiting + --connections-per-host CONNECTIONS_PER_HOST + number of connections per host - defaults to number of cpus + --print-to-stdout print to stdout instead of writing to a file + --nodeselector NODESELECTOR + nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla +``` +While the benchmark is running, open up Grafana and take a look at the monitoring metrics. + +After the Jobs finish, clean them up with: +```bash +kubectl delete -f scripts/cassandra-stress.yaml +``` + +## Scale Down + +The operator supports scale down of a rack. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale down a rack, change the `Spec.Members` field of the rack to the desired value. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Clean Up + +To clean up all resources associated with this walk-through, you can run the commands below. + +**NOTE:** this will destroy your database and delete all of its associated data. + +```console +kubectl delete -f examples/generic/cluster.yaml +kubectl delete -f examples/common/operator.yaml +kubectl delete -f examples/common/cert-manager.yaml +``` + +## Troubleshooting + +If the cluster does not come up, the first step would be to examine the operator's logs: + +```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 +``` diff --git a/v1.10/_sources/gke.md.txt b/v1.10/_sources/gke.md.txt new file mode 100644 index 00000000000..04fe721f224 --- /dev/null +++ b/v1.10/_sources/gke.md.txt @@ -0,0 +1,167 @@ +# Deploying Scylla on GKE + +This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +GCP_USER=$(gcloud config list account --format "value(core.account)") +GCP_PROJECT=$(gcloud config list project --format "value(core.project)") +GCP_ZONE=us-west1-b + +# From inside the examples/gke folder +cd examples/gke +./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE" + +# Example: +# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b +``` + +:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region. + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### Google Kubernetes Engine Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +GCP_USER=$( gcloud config list account --format "value(core.account)" ) +GCP_PROJECT=$( gcloud config list project --format "value(core.project)" ) +GCP_REGION=us-west1 +GCP_ZONE=us-west1-b +CLUSTER_NAME=scylla-demo +CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" ) +``` + +#### Creating a GKE cluster + +First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called `systemconfig.yaml` with the following content: +``` +kubeletConfig: + cpuManagerPolicy: static +``` + +Then we'll create a GKE cluster with the following: + +1. A NodePool of 2 `n1-standard-8` Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes. + ``` + gcloud container \ + clusters create "${CLUSTER_NAME}" \ + --cluster-version "${CLUSTER_VERSION}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-8" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --image-type "UBUNTU_CONTAINERD" \ + --system-config-from-file=systemconfig.yaml \ + --enable-stackdriver-kubernetes \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +2. A NodePool of 2 `n1-standard-32` Nodes to deploy `cassandra-stress` later on. + + ``` + gcloud container --project "${GCP_PROJECT}" \ + node-pools create "cassandra-stress-pool" \ + --cluster "${CLUSTER_NAME}" \ + --zone "${GCP_ZONE}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --node-taints role=cassandra-stress:NoSchedule \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +3. A NodePool of 4 `n1-standard-32` Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as [raw block devices](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd#raw-block). It is important to disable `autoupgrade` and `autorepair`. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it's better to handle upgrades manually, with more control over the process and error handling. + ``` + gcloud container \ + node-pools create "scylla-pool" \ + --cluster "${CLUSTER_NAME}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "4" \ + --disk-type "pd-ssd" --disk-size "20" \ + --local-nvme-ssd-block count="8" \ + --node-taints role=scylla-clusters:NoSchedule \ + --node-labels scylla.scylladb.com/node-type=scylla \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +#### Setting Yourself as `cluster-admin` +> (By default GKE doesn't give you the necessary RBAC permissions) + +Get the credentials for your new cluster +``` +gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}" +``` + +Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission `container.clusterRoleBindings.create`. +The easiest way to obtain this permission is to enable the `Kubernetes Engine Admin` role for your user in the GCP IAM web interface. +``` +kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}" +``` + + +### Prerequisites + +#### Setting up nodes for ScyllaDB + +ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you'll first need to form a RAID array from those disks. +`NodeConfig` performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in [Performance tuning](performance.md) section of ScyllaDB Operator's documentation. + +Deploy `NodeConfig` to let it take care of the above operations: +``` +kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml +``` + +#### Deploying Local Volume Provisioner + +Afterwards, deploy ScyllaDB's [Local Volume Provisioner](https://github.com/scylladb/k8s-local-volume-provisioner), capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays. +``` +kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/ +kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml +``` + +### Deploy Scylla cluster +In order for the example to work you need to modify the cluster definition in the following way: + +``` +sed -i "s//${GCP_REGION}/g;s//${GCP_ZONE}/g" examples/gke/cluster.yaml +``` + +This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created. + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to install the operator and launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting a GKE cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}" +``` diff --git a/v1.10/_sources/helm.md.txt b/v1.10/_sources/helm.md.txt new file mode 100644 index 00000000000..56fbe9620ac --- /dev/null +++ b/v1.10/_sources/helm.md.txt @@ -0,0 +1,339 @@ +# Deploying Scylla stack using Helm Charts + +In this example we will install Scylla stack on Kubernetes. This includes the following components: +- Scylla Operator +- Scylla Manager +- Scylla + +We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator. + +### Prerequisites + +- Kubernetes 1.16+ +- Helm 3+ + +### TL;DR + +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +kubectl apply -f examples/common/cert-manager.yaml +helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator +helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager +helm install scylla scylla/scylla --create-namespace --namespace scylla +``` + +### Deploy Cert Manager + +This step is optional if you want to use your own certificate. +If you don't have one, make sure to not disable autogeneration using Scylla Operator Helm Chart. + +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` + +Once it's deployed, wait until all Cert Manager pods will enter into Running state: + +```console +kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s +``` + +### Helm Chart repository + +To install Scylla Helm Chart repository execute the following commands: +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +``` + +Then you can search through repository, it should contain at least three Helm charts: +``` +helm search repo scylla +NAME CHART VERSION APP VERSION DESCRIPTION +scylla/scylla 1.0.1 v1.0.1 Scylla is a close-to-the-hardware rewrite of Ca... +scylla/scylla-manager 1.0.1 v1.0.1 Scylla Manager automates database operations. +scylla/scylla-operator 1.0.1 v1.0.1 Scylla Operator is a Kubernetes Operator for ma... +``` + +All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit. + +### Scylla Operator Chart + +This chart is very simple, most interesting customizable fields are `image`, `resources` and `webhook`. +All others can be looked up in Chart source in Scylla Operator repository. + +#### image + +Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change `pullPolicy` if default one does not +fullfill your needs. In [Kubernetes documentation](https://kubernetes.io/docs/concepts/containers/images/) you +can read more about different pull policies. + +Image URL will be composed based on these fields in follwing pattern: +`repository/scylla-operator:tag` +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +#### resources + +You can customize how much resources will be allocated for Operator pods via `resource` field: +```yaml +resources: + limits: + cpu: 100m + memory: 128Mi + requests: + cpu: 100m + memory: 32Mi +``` + +To read more about resource specification, follow [Kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/). + +#### webhook + +Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate. + +`createSelfSignedCertificate` specifies whether a self-signed certificate should be created using Cert Manager +`certificateSecretName`: name of a secret containing custom certificate. + +```yaml +webhook: + createSelfSignedCertificate: true + certificateSecretName: "" +``` + +#### Customization + +You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values. + +You can find an example in Scylla Operator repository under `examples/helm/values.operator.yaml` + +#### Installation + +To deploy Scylla Operator using customized values file execute the following: +``` +helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator +``` + +### Scylla Helm Chart + +Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it. + +#### Customization + +Versions of images used in the cluster can be set via `scyllaImage` and `agentImage` +```yaml +scyllaImage: + repository: scylladb/scylla + tag: 4.3.0 + +agentImage: + repository: scylladb/scylla-manager-agent + tag: 2.2.1 +``` + +A minimal Scylla cluster can be expressed as: +```yaml +datacenter: us-east-1 +racks: +- name: us-east-1b + members: 2 + storage: + capacity: 5G + resources: + limits: + cpu: 1 + memory: 1Gi + requests: + cpu: 1 + memory: 1Gi +``` + +Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory. + +For other customizable fields, please refer to [ScyllaCluster CRD definition](scylla-cluster-crd.md). +CRD Rack Spec and Helm Chart Rack should have the same fields. + +#### Installation + +To deploy Scylla cluster using customzied values file execute the following command: +``` +helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla +``` + +Scylla Operator will provision this cluster on your K8s environment. + +### Scylla Manager Helm Chart + +Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster. + +To read more about Scylla Manager see [Manager guide](manager.md). + +#### Scylla Manager + +To set version of used Scylla Manager you can use `image` field: +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: 2.2.1 +``` +To control how many resources are allocated for Scylla Manager use `resource` field: +```yaml +resources: + limits: + cpu: 500m + memory: 500Mi + requests: + cpu: 500m + memory: 500Mi +``` + +#### Scylla Manager Controller + +Similarly Scylla Manager Controller image can be customized: + +```yaml +controllerImage: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +And allocated resources: +```yaml +controllerResources: + limits: + cpu: 100m + memory: 30Mi + requests: + cpu: 100m + memory: 20Mi +``` + +#### Scylla + +To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It's definition should land as a `scylla` field. + +#### Customization + +All others customizable fields can be looked up in Chart source in Scylla Operator repository. + +#### Installation + +To deploy Scylla Manager using customized values file execute the following command: +``` +helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager +``` + +## Results + +Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn't it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces. + +Scylla Operator: +```shell +$ kubectl -n scylla-operator get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-operator-5dbcb54f5c-vjm4m 1/1 Running 0 51s +pod/scylla-operator-5dbcb54f5c-wfjbw 1/1 Running 0 51s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-operator-webhook ClusterIP 10.105.207.130 443/TCP 51s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-operator 2/2 2 2 51s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-operator-5dbcb54f5c 2 2 2 51s + +``` + +Operator is running! + +Scylla Manager: +```shell +$ kubectl -n scylla-manager get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-manager-669db64dd-bcm4v 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-drbth 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-rhwqx 1/1 Running 0 89s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-manager ClusterIP 10.105.231.53 80/TCP,5090/TCP 89s +service/scylla-manager-client ClusterIP None 9180/TCP,5090/TCP 89s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-manager 1/1 1 1 89s +deployment.apps/scylla-manager-controller 2/2 2 2 89s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-manager-669db64dd 1 1 1 89s +replicaset.apps/scylla-manager-controller-844ccc56c4 2 2 2 89s + + +``` + +Good to go, ready to serve! + +Scylla itself: +```shell +$ kubectl -n scylla get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-us-east-1-us-east-1b-0 2/2 Running 0 5m58s +pod/scylla-us-east-1-us-east-1b-1 2/2 Running 0 4m29s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-client ClusterIP None 9180/TCP,5090/TCP 5m59s +service/scylla-us-east-1-us-east-1b-0 ClusterIP 10.43.149.92 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 5m58s +service/scylla-us-east-1-us-east-1b-1 ClusterIP 10.43.49.0 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 4m29s + +NAME READY AGE +statefulset.apps/scylla-us-east-1-us-east-1b 2/2 5m59s +``` + +Two running nodes, exactly what we were asking for. + +## Monitoring + +To spin up a Prometheus monitoring refer to [monitoring guide](monitoring.md). + +Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor: +```yaml +serviceMonitor: + create: false +``` + +Change `create` to `true` and update your current deployment using: +```shell +helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml +``` + +Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics. + +## Cleanup + +To remove these applications you can simply uninstall them using Helm CLI: +```shell +helm uninstall scylla -n scylla +helm uninstall scylla-manager -n scylla-manager +helm uninstall scylla-operator -n scylla-operator +``` diff --git a/v1.10/_sources/index.rst.txt b/v1.10/_sources/index.rst.txt new file mode 100644 index 00000000000..9c671aaad98 --- /dev/null +++ b/v1.10/_sources/index.rst.txt @@ -0,0 +1,62 @@ +============================= +Scylla Operator Documentation +============================= + +.. toctree:: + :hidden: + :maxdepth: 1 + + generic + eks + gke + helm + manager + monitoring + migration + nodeoperations/index + performance + upgrade + releases + known-issues + scylla-cluster-crd + contributing + +Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades. + +.. image:: logo.png + :width: 200pt + +For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University. + +scylla-operator is a Kubernetes Operator for managing Scylla clusters. + +Currently it supports: + +* Deploying multi-zone clusters +* Scaling up or adding new racks +* Scaling down +* Monitoring with Prometheus and Grafana +* Integration with `Scylla Manager `_ +* Dead node replacement +* Version Upgrade +* Backup +* Repairs +* Autohealing +* Monitoring with Prometheus and Grafana + +**Choose a topic to begin**: + +* :doc:`Deploying Scylla on a Kubernetes Cluster ` +* :doc:`Deploying Scylla on EKS ` +* :doc:`Deploying Scylla on GKE ` +* :doc:`Deploying Scylla Manager on a Kubernetes Cluster ` +* :doc:`Deploying Scylla stack using Helm Charts ` +* :doc:`Setting up Monitoring using Prometheus and Grafana ` +* :doc:`Node operations ` +* :doc:`Performance tuning [Experimental] ` +* :doc:`Upgrade procedures ` +* :doc:`Releases ` +* :doc:`Known issues ` +* :doc:`Scylla Cluster Custom Resource Definition (CRD) ` +* :doc:`Contributing to the Scylla Operator Project ` diff --git a/v1.10/_sources/known-issues.md.txt b/v1.10/_sources/known-issues.md.txt new file mode 100644 index 00000000000..1af3a7bfdd1 --- /dev/null +++ b/v1.10/_sources/known-issues.md.txt @@ -0,0 +1,14 @@ +# Known issues + +### Scylla Manager does not boot up on Minikube + +If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for [TRUNCATE queries](#truncate-queries-does-not-work-on-minikube). + +### TRUNCATE queries does not work on Minikube + +The `TRUNCATE` queries requires [hairpinning](https://en.wikipedia.org/wiki/Hairpinning) to be enabled. On minikube this is disabled by default. + +To fix it execute the following command: +``` +minikube ssh sudo ip link set docker0 promisc on +``` diff --git a/v1.10/_sources/manager.md.txt b/v1.10/_sources/manager.md.txt new file mode 100644 index 00000000000..10ee6839cbd --- /dev/null +++ b/v1.10/_sources/manager.md.txt @@ -0,0 +1,258 @@ +# Deploying Scylla Manager on a Kubernetes Cluster + +Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way. + +Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager [Proprietary Software License Agreement](https://www.scylladb.com/scylla-manager-software-license-agreement/) for details. + +## Prerequisites + +* Kubernetes cluster +* Scylla Operator - see [generic guide](generic.md) + +## Architecture + +Scylla Manager in K8s consist of: +- Dedicated Scylla Cluster + + Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace. + +- Scylla Manager Controller + + Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states. + 1. What user wants - task definition in CRD. + 2. What Controller registered - Task name to Task ID mapping - CRD status. + 3. Scylla Manager task listing - internal state of Scylla Manager. + + When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling. + +- Scylla Manager + + Regular Scylla Manager, the same used in cloud and bare metal deployments. + + + +## Deploy Scylla Manager + +Deploy the Scylla Manager using the following commands: + +```console +kubectl apply -f examples/common/manager.yaml +``` + +This will install the Scylla Manager in the `scylla-manager` namespace. +You can check if the Scylla Manager is up and running with: + +```console +kubectl -n scylla-manager get pods +NAME READY STATUS RESTARTS AGE +scylla-manager-cluster-manager-dc-manager-rack-0 2/2 Running 0 37m +scylla-manager-controller-0 1/1 Running 0 28m +scylla-manager-scylla-manager-7bd9f968b9-w25jw 1/1 Running 0 37m +``` + +As you can see there are three pods: +* `scylla-manager-cluster-manager-dc-manager-rack-0` - is a single node Scylla cluster. +* `scylla-manager-controller-0` - Scylla Manager Controller. +* `scylla-manager-scylla-manager-7bd9f968b9-w25jw` - Scylla Manager. + +To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command: + + ```console +kubectl -n scylla-manager logs scylla-manager-controller-0 +``` + +The output should be something like: +```console +{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +``` + +To check logs of Scylla Manager itself, use following command: +```console +kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + +The output should be something like: + +```console +{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +``` + +If there are no errors in the logs, let's spin a Scylla Cluster. + +## Cluster registration + + +When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster. + +See [generic tutorial](generic.md) to spawn your cluster. + +Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager. + +Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager. + + ```console +kubectl -n scylla describe Cluster + +[...] +Status: + Manager Id: d1d532cd-49f2-4c97-9263-25126532803b + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` +You can use this ID to talk to Scylla Manager using `sctool` CLI installed in Scylla Manager Pod. +You can also use Cluster name in `namespace/cluster-name` format. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator). + +In this task listing we can see CQL and REST healthchecks. + +## Task scheduling + +You can either define tasks prior Cluster creation, or for existing Cluster. +Let's edit already running cluster definition to add repair and backup task. +```console +kubectl -n scylla edit Cluster simple-cluster +``` + +Add following task definition to Cluster spec: +``` + repairs: + - name: "users repair" + keyspace: ["users"] + interval: "1d" + backup: + - name: "weekly backup" + location: ["s3:cluster-backups"] + retention: 3 + interval: "7d" + - name: "daily backup" + location: ["s3:cluster-backups"] + retention: 7 + interval: "1d" +``` + +For full task definition configuration consult [Scylla Cluster CRD](scylla-cluster-crd.md). + +**Note**: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up. + +Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372 │ -L s3:cluster-backups --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d) │ NEW │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a │ │ 23 Sep 20 14:38:42 CEST │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly. + +To check progress of run you can use following command: + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a +Status: RUNNING +Start time: 23 Sep 20 14:38:42 UTC +Duration: 13s +Progress: 2.69% +Datacenters: + - us-east-1 ++--------------------+-------+ +| system_auth | 8.06% | +| system_distributed | 0.00% | +| system_traces | 0.00% | ++--------------------+-------+ + +``` +Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing. + +## Clean Up + +To clean up all resources associated with Scylla Manager, you can run the commands below. + +**NOTE:** this will destroy your Scylla Manager database and delete all of its associated data. + +```console +kubectl delete -f examples/common/manager.yaml +``` + +## Troubleshooting + +**Manager is not running** + +If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs: + +```console +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + + +**My task wasn't scheduled** + +If your task wasn't scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs. + +Example: + +Following status describes error when backup task cannot be scheduled, due to lack of access to bucket: +```console +Status: + Backups: + Error: create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug" + Id: 00000000-0000-0000-0000-000000000000 + Interval: 0 + Location: + s3:manager-test + Name: adhoc backup + Num Retries: 3 + Retention: 3 + Start Date: now + Manager Id: 2b9dbe8c-9daa-4703-a66d-c29f63a917c8 + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` + +Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status. \ No newline at end of file diff --git a/v1.10/_sources/migration.md.txt b/v1.10/_sources/migration.md.txt new file mode 100644 index 00000000000..cdd7a7e8522 --- /dev/null +++ b/v1.10/_sources/migration.md.txt @@ -0,0 +1,146 @@ +## Version migrations + + +### `v0.3.0` -> `v1.0.0` migration + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common kind +which is easier to disambiguate (`ScyllaCluster`). +***This change is backward incompatible, which means manual migration is needed.*** + +This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the [upgrade guide](upgrade.md) where full deletion is requested, this procedure shouldn't cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn't run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first. + +***Read the whole procedure and make sure you understand what is going on before executing any of the commands!*** + +In case of any issues or questions regarding this procedure, you're welcomed on our [Scylla Users Slack](http://slack.scylladb.com/) +on #kubernetes channel. + +### Procedure + +1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` + All below commands will use `scylla` namespace and `simple-cluster` as a cluster name. +1. Make sure you're using v1.0.0 tag: + ``` + git checkout v1.0.0 + ``` +1. Upgrade your `cert-manager` to `v1.0.0`. If you installed it from a static file from this repo, simply execute the following: + ``` + kubectl apply -f examples/common/cert-manager.yaml + ``` + If your `cert-manager` was installed in another way, follow official instructions on `cert-manager` website. +1. `examples/common/operator.yaml` file contains multiple resources. Extract **only** `CustomResourceDefinition` to separate file. +1. Install v1.0.0 CRD definition from file created in the previous step: + ``` + kubectl apply -f examples/common/crd.yaml + ``` +1. Save your existing `simple-cluster` Cluster definition to a file: + ``` + kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml + ``` +1. Migrate `Kind` and `ApiVersion` to new values using: + ``` + sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml + sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml + ``` +1. Install migrated CRD instance + ``` + kubectl apply -f existing-cluster.yaml + ``` + At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator. +1. Get UUID of newly created ScyllaCluster resource: + ``` + kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}" + + 12a3678d-8511-4c9c-8a48-fa78d3992694 + ``` + Save output UUID somewhere, it will be referred as `` in commands below. + + ***Depending on your shell, you might get additional '%' sign at the end of UUID, make sure to remove it!*** + +1. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters: + ``` + kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]' + ``` + Amend role name according to your cluster name, it should look like `-member`. +1. Get a list of all Services associated with your cluster. First get list of all services: + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 109m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 108m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 106m + + ``` +1. For each service, change its `ownerReference` to point to new CRD instance: + ``` + kubectl -n scylla patch svc --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with Service name, and `` with saved UUID from one of the previous steps. +1. Get a list of all Services again to see if none was deleted. Check also "Age" column, it shouldn't be lower than previous result. + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 110m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 110m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 107m + + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m + ``` +1. For each StatefulSet from previous step, change its `ownerReference` to point to new CRD instance. + + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with StatefulSet name, and `` with saved UUID from one of the previous steps. + +1. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. + Checkout `v0.3.0` version, and remove Scylla Operator, and old CRD: + ``` + git checkout v0.3.0 + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0`, and install upgraded Scylla Operator: + ``` + git checkout v1.0.0 + kubectl apply -f examples/common/operator.yaml + ``` +1. Wait until Scylla Operator boots up: + ``` + kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m +1. For each StatefulSet from previous step, change its sidecar container image to `v1.0.0`, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one. + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + kubectl -n scylla rollout status sts + ``` + Replace `` with StatefulSet name. +1. If you're using Scylla Manager, bump Scylla Manager Controller image to `v1.0.0` + ``` + kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + ``` +1. Your Scylla cluster is now migrated to `v1.0.0`. diff --git a/v1.10/_sources/monitoring.md.txt b/v1.10/_sources/monitoring.md.txt new file mode 100644 index 00000000000..9f2651c5737 --- /dev/null +++ b/v1.10/_sources/monitoring.md.txt @@ -0,0 +1,180 @@ +# Monitoring + +Scylla Operator 1.8 introduced a new API resource `ScyllaDBMonitoring`, allowing users to deploy a managed monitoring +setup for their Scylla Clusters. + +```yaml +apiVersion: scylla.scylladb.com/v1alpha1 +kind: ScyllaDBMonitoring +metadata: + name: example +spec: + type: Platform + endpointsSelector: + matchLabels: + app.kubernetes.io/name: scylla + scylla-operator.scylladb.com/scylla-service-type: identity + scylla/cluster: replace-with-your-scyllacluster-name + components: + prometheus: + storage: + volumeClaimTemplate: + spec: + resources: + requests: + storage: 1Gi + grafana: + exposeOptions: + webInterface: + ingress: + ingressClassName: haproxy + dnsDomains: + - test-grafana.test.svc.cluster.local + annotations: + haproxy-ingress.github.io/ssl-passthrough: "true" +``` + +For details, refer to the below command: +```console +$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1 +``` + +## Deploy managed monitoring + +**Note**: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions. + +### Requirements + +Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see: +* [Deploying Scylla on a Kubernetes Cluster](generic.md) +* [Deploying Scylla stack using Helm Charts](helm.md) + +The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps. + +#### Deploy Prometheus Operator +Deploy Prometheus Operator using kubectl: +```console +$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator +``` + +##### Wait for Prometheus Operator to roll out +```console +$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator +deployment "prometheus-operator" successfully rolled out +``` + +#### Deploy HAProxy Ingress +Deploy HAProxy Ingress using kubectl: +```console +$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress +``` + +##### Wait for HAProxy Ingress to roll out +```console +$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress +deployment "haproxy-ingress" successfully rolled out +``` + +### Deploy ScyllaDBMonitoring + +First, update the `endpointsSelector` in `examples/monitoring/v1alpha1/scylladbmonitoring.yaml` with a label +matching your ScyllaCluster instance name. + +Deploy the monitoring setup using kubectl: +```console +$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml +``` + +Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources. + +#### Wait for ScyllaDBMonitoring to roll out +```console +$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met +``` + +#### Wait for Prometheus to roll out +```console +$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example +statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb... +``` + +#### Wait for Grafana to roll out +```console +$ kubectl rollout status --timeout=5m deployments.apps/example-grafana +deployment "example-grafana" successfully rolled out +``` + +### Accessing Grafana + +For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller's IP address but most clients and tools allow setting the SNI field manually. + +### Prerequisites + +To access Grafana, you first need to collect the serving CA and the credentials. + +```console +$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )" +$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )" +$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )" +``` + +### Connecting through Ingress using a resolvable domain + +In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like `*.app.mydomain` pointing to the Ingress controller's external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller's A record. + +Note: The ScyllaDBMonitoring example creates an Ingress object with `test-grafana.test.svc.cluster.local` DNS domain that you should adjust to your domain. Below examples use `example-grafana.apps.mydomain`. + +Note: To test a resolvable domain from your machine without creating DNS records, you can adjust `/etc/hosts` or similar. + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` + +### Connecting through Ingress using an unresolvable domain + +To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller's IP that can be resolved externally. Again, there are many ways to do so beyond the below examples. + +Unless stated otherwise, we assume your Ingress is running on port 443. + +```console +$ INGRESS_PORT=443 +``` + +#### Variants + +##### Ingress ExternalIP + +When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address. + +```console +$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )" +``` + +##### Ingress NodePort + +NodePort is slightly less convenient, but it's available in development clusters as well. + +```console +$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )" +$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )" +``` + +##### Connection + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` diff --git a/v1.10/_sources/nodeoperations/automatic-cleanup.md.txt b/v1.10/_sources/nodeoperations/automatic-cleanup.md.txt new file mode 100644 index 00000000000..5e0535cca97 --- /dev/null +++ b/v1.10/_sources/nodeoperations/automatic-cleanup.md.txt @@ -0,0 +1,6 @@ +# Automatic cleanup and replacement in case when k8s node is lost + +In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity. + +When `automaticOrphanedNodeCleanup` flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources. diff --git a/v1.10/_sources/nodeoperations/index.rst.txt b/v1.10/_sources/nodeoperations/index.rst.txt new file mode 100644 index 00000000000..c04919e5d13 --- /dev/null +++ b/v1.10/_sources/nodeoperations/index.rst.txt @@ -0,0 +1,22 @@ +====================================== +Node operations using Scylla Operator +====================================== + +.. toctree:: + :hidden: + :maxdepth: 2 + + scylla-upgrade + replace-node + automatic-cleanup + maintenance-mode + restore + + +Choose a topic: + +* :doc:`Scylla version upgrade ` +* :doc:`Replace Scylla node ` +* :doc:`Automatic cleanup and replacement when k8s node is lost ` +* :doc:`Maintenance mode ` +* :doc:`Restore from backup ` \ No newline at end of file diff --git a/v1.10/_sources/nodeoperations/maintenance-mode.md.txt b/v1.10/_sources/nodeoperations/maintenance-mode.md.txt new file mode 100644 index 00000000000..c976ecc2b87 --- /dev/null +++ b/v1.10/_sources/nodeoperations/maintenance-mode.md.txt @@ -0,0 +1,19 @@ +# Maintenance mode + +When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive. + +This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again. + +To enable maintenance mode add `scylla/node-maintenance` label to service in front of Scylla Pod. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance="" +``` + +To disable, simply remove this label from service. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance- +``` diff --git a/v1.10/_sources/nodeoperations/replace-node.md.txt b/v1.10/_sources/nodeoperations/replace-node.md.txt new file mode 100644 index 00000000000..3e6a8c7f024 --- /dev/null +++ b/v1.10/_sources/nodeoperations/replace-node.md.txt @@ -0,0 +1,74 @@ +# Replacing a Scylla node + +## Replacing a dead node +In the case of a host failure, it may not be possible to bring back the node to life. + +Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth). + +_This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time_ + +**Procedure** + +1. Verify the status of the node using `nodetool status` command, the node with status DN is down and need to be replaced + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.63 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + DN 10.43.43.51 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Identify service which is bound to down node by checking IP address + ```bash + kubectl -n scylla get svc + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.231.189 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.125.110 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h11m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.43.51 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h5m + ``` +1. Drain node which we would like to replace using. **This command may delete your data from local disks attached to given node!** + ```bash + kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data + ``` + + Pod which will be replaced should enter the `Pending` state + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h21m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h19m + simple-cluster-us-east-1-us-east-1a-2 0/2 Pending 0 8m14s + ``` +1. To being node replacing, add `scylla/replace=""` label to service bound to pod we are replacing. + ```bash + kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace="" + ``` + Your failed Pod should be recreated on available k8s node + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h27m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h25m + simple-cluster-us-east-1-us-east-1a-2 1/2 Running 0 9s + ``` + Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. + After bootstraping is over, your new Pod should be ready to go. + Old one shouldn't be no longer visible in `nodetool status` + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.62 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + UN 10.43.191.172 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. + You can use [Scylla Manager](../manager.md) to run the repair. diff --git a/v1.10/_sources/nodeoperations/restore.md.txt b/v1.10/_sources/nodeoperations/restore.md.txt new file mode 100644 index 00000000000..b4d85573cff --- /dev/null +++ b/v1.10/_sources/nodeoperations/restore.md.txt @@ -0,0 +1,89 @@ +# Restore from backup + +This procedure will describe how to restore from backup taken using [Scylla Manager](../manager.md) to a fresh **empty** cluster of any size. + +First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod. +```bash +sctool backup list -c --all-clusters -L +``` + +Where: +* `CLUSTER_ID` - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status. +* `BACKUP_LOCATION` - is a location where backup is stored. For example, for bucket called `backups` stored in AWS S3, location is `s3:backups`. + +```bash +sctool backup list -c simple-cluster --all-clusters -L s3:backups +Snapshots: + - sm_20201227144037UTC (409MiB) + - sm_20201228145917UTC (434MiB) +Keyspaces: + - users (9 tables) + - system_auth (2 tables) + - system_distributed (3 tables) + - system_schema (13 tables) + - system_traces (5 tables) +``` + +To get the list of files use: + +```bash +sctool backup files -c -L -T +``` + +Where: +* `SNAPSHOT_TAG` - name of snapshot you want to restore. + +Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example: +```bash +s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz ./ +``` + +To download this archive you can use AWS CLI tool `aws s3 cp`. + +This archive contains a single CQL file for each keyspace in the backup. +```bash +tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz +-rw------- 0/0 12671 2020-12-28 13:17 users.cql +-rw------- 0/0 2216 2020-12-28 13:17 system_auth.cql +-rw------- 0/0 921 2020-12-28 13:17 system_distributed.cql +-rw------- 0/0 12567 2020-12-28 13:17 system_schema.cql +-rw------- 0/0 4113 2020-12-28 13:17 system_traces.cql +``` + +Extract this archive and copy each schema file to one of the cluster Pods by: +```bash +kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla +``` + +To import schema simply execute: +```bash +kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql +``` + +Once the schema is recreated we can proceed to downloading data files. + +First let's save a list of snapshot files to file called `backup_files.out`: + +```bash +kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out +``` + +We will be using `sstableloader` to restore data. `sstableloader` needs a specific directory structure to work namely: `//` +To create this directory structure and download all the files execute these commands: +```bash +mkdir snapshot +cd snapshot +# Create temporary directory structure. +cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p +# Download snapshot files. +cat ../backup_files.out | xargs -n2 aws s3 cp +``` + +To load data into cluster pass cluster address to `sstableloader` together with path to data files and credentials: +```bash +sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password +``` + +Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host. diff --git a/v1.10/_sources/nodeoperations/scylla-upgrade.md.txt b/v1.10/_sources/nodeoperations/scylla-upgrade.md.txt new file mode 100644 index 00000000000..d39c9666c5e --- /dev/null +++ b/v1.10/_sources/nodeoperations/scylla-upgrade.md.txt @@ -0,0 +1,102 @@ +# Upgrading version of Scylla + +To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition. + +In this example cluster will be upgraded to version `4.4.5`. +```bash +kubectl -n scylla patch ScyllaCluster simple-cluster -p '{"spec":{"version": "4.4.5"}}' --type=merge +``` + +Operator supports two types of version upgrades: +1. Patch upgrade +1. Generic upgrade + + +**Patch upgrade** + +Patch upgrade is executed when only patch version change is detected according to [semantic versioning format](https://semver.org/). +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one. + +Example: `4.0.0 -> 4.0.1` + +**Generic upgrade** + +Generic upgrades are executed for the non patch version changes. + +Example: `4.0.0 -> 2020.1.0` or `4.0.0 -> 4.1.0` or even `4.0.0 -> nightly` + +User can observe current state of upgrade in ScyllaCluster status. +```bash +kubectl -n scylla describe ScyllaCluster simple-cluster +[...] +Status: + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.1.9 + Upgrade: + Current Node: simple-cluster-us-east-1-us-east-1a-2 + Current Rack: us-east-1a + Data Snapshot Tag: so_data_20201228135002UTC + From Version: 4.1.9 + State: validate_upgrade + System Snapshot Tag: so_system_20201228135002UTC + To Version: 4.2.2 +``` + +Each upgrade begins with taking a snapshot of `system` and `system_schema` keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under `System Snapshot Tag`. + +Before nodes in rack are upgraded, underlying StatefulSet is changed to use `OnDelete` UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed. + +When a node is being upgraded, [maintenance mode](#maintenance-mode) is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under `Data Snapshot Tag` and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node. + +Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version. + +Current state of upgrade can be traced using `Current Node`, `Current Rack` and `State` status fields. +* `Current Node` shows which node is being upgraded. +* `Current Rack` displays which rack is being upgraded. +* `State` contain information at which stage upgrade is. + +`State` can have following values: +* `begin_upgrade` - upgrade is starting +* `check_schema_agreement` - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried. +* `create_system_backup` - system keyspaces snapshot is being taken +* `find_next_rack` - Operator finds out which rack must be upgraded next, decision is saved in `Current Rack` +* `upgrade_image_in_pod_spec` - Image and UpgradeStrategy is upgraded in underlying StatefulSet +* `find_next_node` - Operator finds out which node must be upgraded next, decision is saved in `Current Node` +* `enable_maintenance_mode` - maintenance mode is being enabled +* `drain_node` - node is being drained +* `backup_data` - snapshot of data keyspaces is being taken +* `disable_maintenance_mode` - maintenance mode is being disabled +* `delete_pod` - Scylla Pod is being deleted +* `validate_upgrade` - Operator validates if new pod enters Ready state and if Scylla version is upgraded +* `clear_data_backup` - snapshot of data keyspaces is being removed +* `clear_system_backup` - snapshot of system keyspaces is being removed +* `restore_upgrade_strategy` - restore UpgradeStrategy in underlying StatefulSet +* `finish_upgrade` - upgrade cleanup + +**Recovering from upgrade failure** + +Upgrade may get stuck on `validate_upgrade` stage. This happens when Scylla Pod refuses to properly boot up. + +To continue with upgrade, first turn off operator by scaling Operator replicas to zero: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0 +``` +Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names. + +Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2 +``` + +Operator should continue upgrade process from where it left off. diff --git a/v1.10/_sources/performance.md.txt b/v1.10/_sources/performance.md.txt new file mode 100644 index 00000000000..4b0bbd96781 --- /dev/null +++ b/v1.10/_sources/performance.md.txt @@ -0,0 +1,95 @@ +# Performance tuning + +Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes. + +## Node tuning + +Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning. + +Below example NodeConfig tunes nodes having `scylla.scylladb.com/node-type=scylla` label: +``` +apiVersion: scylla.scylladb.com/v1alpha1 +kind: NodeConfig +metadata: + name: cluster +spec: + placement: + nodeSelector: + scylla.scylladb.com/node-type: scylla +``` +For more details about new CRD use: +``` +kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1 +``` + +For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more. + +Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node. + +Scylla works most efficently when it's pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares. + +On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others. +We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively. + +Tuning resources are created in a special namespace called `scylla-operator-node-tuning`. + +The tuning is applied only to pods with `Guaranteed` QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions. + +## Kubernetes tuning + +By default, the kubelet uses the CFS quota to enforce pod CPU limits. +When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static. + +Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider. + +Only pods within the [Guaranteed QoS class](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/#create-a-pod-that-gets-assigned-a-qos-class-of-guaranteed)) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won't be part of the shared pool. + +In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class: +* resource request and limits must be equal or only limits have to be provided +* agentResources must be provided and their requests and limits must be equal, or only limits have to be provided + +An example of such a ScyllaCluster that receives a Guaranteed QoS class is below: + +``` +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: guaranteed-cluster + namespace: scylla +spec: + version: 4.5.1 + agentVersion: 2.5.2 + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500Gi + agentResources: + requests: + cpu: 1 + memory: 1G + limits: + cpu: 1 + memory: 1G + resources: + requests: + cpu: 4 + memory: 16G + limits: + cpu: 4 + memory: 16G +``` \ No newline at end of file diff --git a/v1.10/_sources/releases.md.txt b/v1.10/_sources/releases.md.txt new file mode 100644 index 00000000000..afb5c8e91d9 --- /dev/null +++ b/v1.10/_sources/releases.md.txt @@ -0,0 +1,58 @@ +# Releases + +## Schedule +We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates. + +| Release | Code freeze | General availability | +|:-------:|:-----------:|:--------------------:| +| 1.10 | 2022-08-08 | 2021-08-15 | + +## Supported releases +We support the latest 2 releases of the operator to give everyone time to upgrade. + +| Release | General availability | Support ends | +|:-------:|:--------------------:|:---------------:| +| 1.9 | 2023-07-04 | Release of 1.11 | +| 1.8 | 2023-01-25 | Release of 1.10 | +| 1.7 | 2022-01-27 | 2023-07-04 | +| 1.6 | 2021-12-03 | 2023-01-25 | +| 1.5 | 2021-09-16 | 2022-01-27 | +| 1.4 | 2021-08-10 | 2021-12-03 | +| 1.3 | 2021-06-17 | 2021-09-16 | +| 1.2 | 2021-05-06 | 2021-08-10 | +| 1.1 | 2021-03-22 | 2021-06-17 | +| 1.0 | 2021-01-21 | 2021-05-06 | + +### Backport policy +Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers. + +## CI/CD +We use [GitHub actions](https://github.com/scylladb/scylla-operator/actions/workflows/go.yaml?query=branch%3Amaster+event%3Apush) for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite. + +### Automated promotions + +| Git reference | Type | Container image | +| :----------------: | :----: | :--------------------------------------------------: | +| **master** | branch | docker.io/scylladb/scylla-operator:**latest** | +| **vX.Y** | branch | docker.io/scylladb/scylla-operator:**X.Y** | +| **vX.Y.Z** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z** | +| **vX.Y.Z-alpha.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-alpha.N** | +| **vX.Y.Z-beta.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-beta.N** | +| **vX.Y.Z-rc.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-rc.N** | + +### Generally available +GA images aren't build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate. + +## Support matrix + +Support matrix table shows the version requirements for a particular **scylla-operator** version. Be sure to match these requirements, otherwise some functionality will not work. + +| | v1.9 | v1.8 | v1.7 | v1.6 | v1.5 | v1.4 | v1.3 | v1.2 | v1.1 | v1.0 | +|:-----------------:|:----------:|:----------:|:-----------------:|:--------------------:|:-----------:|:-----------:|:----------:|:----------:|:----------:|:----------:| +| Kubernetes | `>=1.21` | `>=1.21` | `>=1.20 && <1.25` | `>=1.19.10 && <1.25` | `>=1.19.10` | `>=1.19.10` | `>=1.19` | `>=1.19` | `>=1.11` | `>=1.11` | +| CRI API | `v1` | `v1alpha2` | `v1alpha2` | `v1alpha2` | | | | | | | +| Scylla OS | `>=5.0` | `>=5.0` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.2` | `>=4.2` | `>=4.0` | `>=4.0` | +| Scylla Enterprise | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | +| Scylla Manager | `>=2.6` | `>=2.6` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | +| Scylla Monitoring | `>=4.0` | `>=4.0` | `>=3.0` | `>=3.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | diff --git a/v1.10/_sources/scylla-cluster-crd.md.txt b/v1.10/_sources/scylla-cluster-crd.md.txt new file mode 100644 index 00000000000..75d34f1a028 --- /dev/null +++ b/v1.10/_sources/scylla-cluster-crd.md.txt @@ -0,0 +1,188 @@ +# Scylla Cluster CRD + +Scylla database clusters can be created and configured using the `clusters.scylla.scylladb.com` custom resource definition (CRD). + +Please refer to the the [user guide walk-through](generic.md) for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD. + +## Sample + +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: simple-cluster + namespace: scylla +spec: + version: 2.3.1 + repository: scylladb/scylla + developerMode: true + cpuset: false + automaticOrphanedNodeCleanup: true + repairs: + - name: "weekly us-east-1 repair" + intensity: "2" + interval: "7d" + dc: ["us-east-1"] + backups: + - name: "daily users backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "1d" + keyspace: ["users"] + - name: "weekly full cluster backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "7d" + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500G + storageClassName: local-raid-disks + resources: + requests: + cpu: 8 + memory: 32Gi + limits: + cpu: 8 + memory: 32Gi + placement: + nodeAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + nodeSelectorTerms: + - matchExpressions: + - key: failure-domain.beta.kubernetes.io/region + operator: In + values: + - us-east-1 + - key: failure-domain.beta.kubernetes.io/zone + operator: In + values: + - us-east-1a + tolerations: + - key: role + operator: Equal + value: scylla-clusters + effect: NoSchedule +``` + +## Settings Explanation + +### Cluster Settings + +* `version`: The version of Scylla to use. It is used as the image tag to pull. +* `agentVersion`: The version of Scylla Manager Agent to use. It is used as the image tag to pull. +* `repository`: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `agentRepository`: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `developerMode`: Optional field. If it's true, then Scylla is started in [developer mode](https://www.scylladb.com/2016/09/13/test-dev-env/). This setting is for shared test/dev environments. +* `cpuset`: Optional field. If it's true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and only specify limits in resources. +* `automaticOrphanedNodeCleanup`: Optional field. Controls if automatic orphan node cleanup should be performed. +* `alternator`: Optional field. Defines Alternator configuration. + * `port`: Port on which to bind to Alternator API. + * `writeIsolation`: *required* Desired write isolation. +* `genericUpgrade`: Optional field. Defines GenericUpgrade configuration. + * `failureStrategy`: specifies which logic is executed when upgrade failure happens. Currently only `Retry` is supported. + * `pollInterval`: specifies how often upgrade logic polls on state updates. + Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect + overall time spent during upgrade. +* `datacenter`: Datacenter definition. +* `sysctls`: Optional field. Sysctl properties to be applied during initialization. +* `scyllaArgs`: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it. +* `network`: Optional field. Allows to customize network parameters. + * `hostNetworking`: controls if host networking should be enabled. + * `dnsPolicy`: controls Scylla Pod DNS Policy. See [details](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy). +* `repairs`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. +* `backups`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. + + +In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups. + +### Scylla Manager settings + +Tasks are scheduled only when Scylla Manager is deployed in K8s cluster. + +Repairs: +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. Task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. The number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1", "!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `failFast` - Optional field. Stop repair on first error. +* `intensity` - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. + If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). + Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. + Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. + For Scylla clusters that **do not support row-level repair**, intensity can be a decimal between (0,1). + In that case it specifies percent of shards that can be repaired in parallel on a repair master node. + For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. + **Intensity is a number passed as string due to lack of support for float values in k8s controller runtime** +* `parallel` - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). + Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. + The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. + The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace", "!keyspace.table_prefix_*"]` +used to include or exclude keyspaces from repair. +* `smallTableThreshold` - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units `[B, MiB, GiB, TiB]` (default `"1GiB"`). + +Backups: + +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - Optional field. Specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. the number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1","!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace","!keyspace.table_prefix_*"]` used to include or exclude keyspaces from backup. +* `location` - Optional field. A list of backup locations in the format `[:]:` ex. `s3:my-bucket`. +The `:` part is optional and is only needed when different datacenters are being used to upload data to different locations. +`` Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are `s3` and `gcs`. +* `rateLimit` - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format `[:]`. +The `:` part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100). +* `retention` - Optional field. The number of backups which are to be stored (default 3). +* `snapshotParallel` - Optional field. A list of snapshot parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set, the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. +* `uploadParallel` - Optional field. A list of upload parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. + + +### Datacenter Settings + +* `name`: Name of the datacenter. Usually, a datacenter corresponds to a region. +* `racks`: List of racks for the specific datacenter. + +### Rack Settings + +* `name`: Name of the rack. Usually, a rack corresponds to an availability zone. +* `members`: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don't call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node). +* `storage`: Defines the specs of the underlying storage. + * `capacity`: Capacity of the PersistentVolume to request. + * `storageClassName`: Optional field. [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes/) of PersistentVolume to request. +* `resources`: Defines the CPU and RAM resources for the Scylla Pods. + * `requests`: The minimum amount of resources needed to run a Scylla container. + * `cpu`: CPU requests. + * `memory`: RAM requests. + * `limits`: The maximum amount of resources that can be used by a Scylla container. + * `cpu`: CPU limits. + * `memory`: RAM limits. +* `agentResources`: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See `resources` for details. +* `volumes`: Optional field. Defines volumes available in Scylla Pod. See [details](https://kubernetes.io/docs/concepts/storage/volumes/). +* `volumeMounts`: Optional field. Defines which volumes will be attached to Scylla container. +* `agentVolumeMounts`: Optional field. Defines which volumes will be attached to Agent container. +* `scyllaConfig`: Optional field. name of custom config map which will be merged with Scylla config. +* `scyllaAgentConfig`: Optional field. name of custom secret which will be merged with Scylla Manager Agent config. +* `placement`: Optional field. Defines the placement of Scylla Pods. Has the following subfields: + * [`nodeAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature) + * [`podAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`podAntiAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`tolerations`](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration) diff --git a/v1.10/_sources/upgrade.md.txt b/v1.10/_sources/upgrade.md.txt new file mode 100644 index 00000000000..ab14157256b --- /dev/null +++ b/v1.10/_sources/upgrade.md.txt @@ -0,0 +1,184 @@ +# Upgrade of Scylla Operator + +This page describes Scylla Operator upgrade procedures. +There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps. + +## Upgrade via Helm + +Helm doesn't support managing CustomResourceDefinition resources ([#5871](https://github.com/helm/helm/issues/5871), [#7735](https://github.com/helm/helm/issues/7735)) +These are only created on first install and never updated. In order to update them, users have to do it manually. + +Replace `` with the name of your Helm release for Scylla Operator and replace `` with the version number you want to install: +1. Make sure Helm chart repository is up-to-date: + ``` + helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable + helm repo update + ``` +2. Update CRD resources. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + tmpdir=$( mktemp -d ) \ + && helm pull scylla-operator/scylla-operator --version --untar --untardir "${tmpdir}" \ + && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \ + | xargs kubectl apply + ``` +3. Update Scylla Operator + ``` + helm upgrade --version scylla-operator/scylla-operator + ``` + +## Upgrade via kubectl + +Replace `` with the version number you want to install: + +1. Checkout source code of version you want to use: + ``` + git checkout + ``` +2. Manifests use rolling minor version tag, you may want to pin it to specific version: + ``` + find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:^g" + ``` +3. Update Scylla Operator. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + kubectl apply -f deploy/operator + ``` + +--- + +## `v1.2.0` -> `v1.3.0` + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.3.0: + ``` + git checkout v1.3.0 + ``` +1. Update Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.1.0` -> `v1.2.0` + +1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones. + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.2.0: + ``` + git checkout v1.2.0 + ``` +1. Remove old scylla operator namespace - in our case it's called `scylla-operator-system`: + ``` + kubectl delete namespace scylla-operator-system --wait=true + ``` +1. Remove old webhooks: + ``` + kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration + kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration + ``` +1. Install Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.0.0` -> `v1.1.0` + +During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected. + +1. Get name of StatefulSet managing Scylla Operator + ```shell + kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager" + + NAME READY AGE + scylla-operator-controller-manager 1/1 95m + ``` + +1. Change probes and used container image by applying following patch: + ```yaml + spec: + template: + spec: + containers: + - name: manager + image: docker.io/scylladb/scylla-operator:1.1.0 + livenessProbe: + httpGet: + path: /healthz + port: 8080 + scheme: HTTP + readinessProbe: + $retainKeys: + - httpGet + httpGet: + path: /readyz + port: 8080 + scheme: HTTP + ``` + To apply above patch save it to file (`operator-patch.yaml` for example) and apply to Operator StatefulSet: + ```shell + kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)" + ``` + + +## `v0.3.0` -> `v1.0.0` + +***Note:*** There's an experimental migration procedure available [here](migration.md). + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common +kind which is easier to disambiguate. (`ScyllaCluster`). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide. + +1. Get list of existing Scylla clusters + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` +1. Delete each one of them + + ``` + kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster + ``` +1. Make sure you're on `v0.3.0` branch + ``` + git checkout v0.3.0 + ``` +1. Delete existing CRD and Operator + ``` + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0` version + ``` + git checkout v1.0.0 + ``` +1. Install new CRD and Scylla Operator + ``` + kubectl apply -f examples/common/operator.yaml + ``` +1. Migrate your existing Scylla Cluster definition. Change `apiVersion` and `kind` from: + ``` + apiVersion: scylla.scylladb.com/v1alpha1 + kind: Cluster + ``` + to: + ``` + apiVersion: scylla.scylladb.com/v1 + kind: ScyllaCluster + ``` +1. Once your cluster definition is ready, use `kubectl apply` to install fresh Scylla cluster. diff --git a/v1.10/_static/basic.css b/v1.10/_static/basic.css new file mode 100644 index 00000000000..bf18350b65c --- /dev/null +++ b/v1.10/_static/basic.css @@ -0,0 +1,906 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; 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+ margin-bottom: 10px; + margin-left: 30px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/v1.10/_static/check-solid.svg b/v1.10/_static/check-solid.svg new file mode 100644 index 00000000000..92fad4b5c0b --- /dev/null +++ b/v1.10/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/v1.10/_static/clipboard.min.js b/v1.10/_static/clipboard.min.js new file mode 100644 index 00000000000..54b3c463811 --- /dev/null +++ b/v1.10/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/v1.10/_static/copybutton.css b/v1.10/_static/copybutton.css new file mode 100644 index 00000000000..f1916ec7d1b --- /dev/null +++ b/v1.10/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/v1.10/_static/copybutton.js b/v1.10/_static/copybutton.js new file mode 100644 index 00000000000..2ea7ff3e217 --- /dev/null +++ b/v1.10/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/v1.10/_static/copybutton_funcs.js b/v1.10/_static/copybutton_funcs.js new file mode 100644 index 00000000000..dbe1aaad79c --- /dev/null +++ b/v1.10/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/v1.10/_static/css/main.css b/v1.10/_static/css/main.css new file mode 100644 index 00000000000..4ac01745289 --- /dev/null +++ b/v1.10/_static/css/main.css @@ -0,0 +1 @@ +@media 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details. + * + */ + +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + +/** + * make the code below compatible with browsers without + * an installed firebug like debugger +if (!window.console || !console.firebug) { + var names = ["log", "debug", "info", "warn", "error", "assert", "dir", + "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", + "profile", "profileEnd"]; + window.console = {}; + for (var i = 0; i < names.length; ++i) + window.console[names[i]] = function() {}; +} + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} + +/** + * Small JavaScript module for the documentation. + */ +var Documentation = { + + init : function() { + this.fixFirefoxAnchorBug(); + this.highlightSearchWords(); + this.initIndexTable(); + this.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS : {}, + PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; }, + LOCALE : 'unknown', + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext : function(string) { + var translated = Documentation.TRANSLATIONS[string]; + if (typeof translated === 'undefined') + return string; + return (typeof translated === 'string') ? translated : translated[0]; + }, + + ngettext : function(singular, plural, n) { + var translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated === 'undefined') + return (n == 1) ? singular : plural; + return translated[Documentation.PLURALEXPR(n)]; + }, + + addTranslations : function(catalog) { + for (var key in catalog.messages) + this.TRANSLATIONS[key] = catalog.messages[key]; + this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')'); + this.LOCALE = catalog.locale; + }, + + /** + * add context elements like header anchor links + */ + addContextElements : function() { + $('div[id] > :header:first').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this headline')). + appendTo(this); + }); + $('dt[id]').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this definition')). + appendTo(this); + }); + }, + + /** + * workaround a firefox stupidity + * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075 + */ + fixFirefoxAnchorBug : function() { + if (document.location.hash && $.browser.mozilla) + window.setTimeout(function() { + document.location.href += ''; + }, 10); + }, + + /** + * highlight the search words provided in the url in the text + */ + highlightSearchWords : function() { + var params = $.getQueryParameters(); + var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : []; + if (terms.length) { + var body = $('div.body'); + if (!body.length) { + body = $('body'); + } + window.setTimeout(function() { + $.each(terms, function() { + body.highlightText(this.toLowerCase(), 'highlighted'); + }); + }, 10); + $('') + .appendTo($('#searchbox')); + } + }, + + /** + * init the domain index toggle buttons + */ + initIndexTable : function() { + var togglers = $('img.toggler').click(function() { + var src = $(this).attr('src'); + var idnum = $(this).attr('id').substr(7); + $('tr.cg-' + idnum).toggle(); + if (src.substr(-9) === 'minus.png') + $(this).attr('src', src.substr(0, src.length-9) + 'plus.png'); + else + $(this).attr('src', src.substr(0, src.length-8) + 'minus.png'); + }).css('display', ''); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) { + togglers.click(); + } + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords : function() { + $('#searchbox .highlight-link').fadeOut(300); + $('span.highlighted').removeClass('highlighted'); + var url = new URL(window.location); + url.searchParams.delete('highlight'); + window.history.replaceState({}, '', url); + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar : function() { + $('input[name=q]').first().focus(); + }, + + /** + * make the url absolute + */ + makeURL : function(relativeURL) { + return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL; + }, + + /** + * get the current relative url + */ + getCurrentURL : function() { + var path = document.location.pathname; + var parts = path.split(/\//); + $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() { + if (this === '..') + parts.pop(); + }); + var url = parts.join('/'); + return path.substring(url.lastIndexOf('/') + 1, path.length - 1); + }, + + initOnKeyListeners: function() { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + return; + + $(document).keydown(function(event) { + var activeElementType = document.activeElement.tagName; + // don't navigate when in search box, textarea, dropdown or button + if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT' + && activeElementType !== 'BUTTON') { + if (event.altKey || event.ctrlKey || event.metaKey) + return; + + if (!event.shiftKey) { + switch (event.key) { + case 'ArrowLeft': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var prevHref = $('link[rel="prev"]').prop('href'); + if (prevHref) { + window.location.href = prevHref; + return false; + } + break; + case 'ArrowRight': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var nextHref = $('link[rel="next"]').prop('href'); + if (nextHref) { + window.location.href = nextHref; + return false; + } + break; + case 'Escape': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.hideSearchWords(); + return false; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case '/': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.focusSearchBar(); + return false; + } + } + }); + } +}; + +// quick alias for translations +_ = Documentation.gettext; + +$(document).ready(function() { + Documentation.init(); +}); diff --git a/v1.10/_static/documentation_options.js b/v1.10/_static/documentation_options.js new file mode 100644 index 00000000000..724e3825774 --- /dev/null +++ b/v1.10/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '', + LANGUAGE: 'None', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + 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+1,10872 @@ +/*! + * jQuery JavaScript Library v3.5.1 + * https://jquery.com/ + * + * Includes Sizzle.js + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2020-05-04T22:49Z + */ +( function( global, factory ) { + + "use strict"; + + if ( typeof module === "object" && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.5.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.5 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2020-03-14 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting
or other required elements. + thead: [ 1, "
", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px"; + tr.style.height = "1px"; + trChild.style.height = "9px"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = parseInt( trStyle.height ) > 3; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( + dataPriv.get( cur, "events" ) || Object.create( null ) + )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script + if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Contributing to Scylla Operator

+
+

Prerequisites

+

To develop on scylla-operator, your environment must have the following:

+
    +
  1. Go 1.13

    +
      +
    • Make sure GOPATH is set to GOPATH=$HOME/go.

    • +
    +
  2. +
  3. Kustomize v3.1.0

  4. +
  5. kubebuilder v2.3.1

  6. +
  7. Docker

  8. +
  9. Git client installed

  10. +
  11. Github account

  12. +
+

To install all dependencies (Go, kustomize, kubebuilder, dep), simply run:

+
./install-dependencies.sh
+
+
+
+
+

Initial Setup

+
+

Create a Fork

+

From your browser navigate to http://github.com/scylladb/scylla-operator and click the “Fork” button.

+
+
+

Clone Your Fork

+

Open a console window and do the following:

+
# Create the scylla operator repo path
+mkdir -p $GOPATH/src/github.com/scylladb
+
+# Navigate to the local repo path and clone your fork
+cd $GOPATH/src/github.com/scylladb
+
+# Clone your fork, where <user> is your GitHub account name
+git clone https://github.com/<user>/scylla-operator.git
+
+
+
+
+

Add Upstream Remote

+

First you will need to add the upstream remote to your local git:

+
# Add 'upstream' to the list of remotes
+git remote add upstream https://github.com/scylladb/scylla-operator.git
+
+# Verify the remote was added
+git remote -v
+
+
+

Now you should have at least origin and upstream remotes. You can also add other remotes to collaborate with other contributors.

+
+
+
+

Development

+

To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch.

+
+

Building the project

+

You can build the project using the Makefile commands:

+
    +
  • Open the Makefile and change the IMG environment variable to a repository you have access to.

  • +
  • Run make docker-push and wait for the image to be built and uploaded in your repo.

  • +
+
+
+

Create a Branch

+

From a console, create a new branch based on your fork and start working on it:

+
# Ensure all your remotes are up to date with the latest
+git fetch --all
+
+# Create a new branch that is based off upstream master.  Give it a simple, but descriptive name.
+# Generally it will be two to three words separated by dashes and without numbers.
+git checkout -b feature-name upstream/master
+
+
+

Now you are ready to make the changes and commit to your branch.

+
+
+

Updating Your Fork

+

During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to rebase your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean.

+

Whenever you need to update your local repository, you never want to merge. You always will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (git stash save -u "<some description>").

+
git fetch --all
+git rebase upstream/master
+
+
+

Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the Git documentation, it will be well worth it. In a nutshell, rebasing does the following:

+
    +
  • “Unwinds” your local commits. Your local commits are removed temporarily from the history.

  • +
  • The latest changes from upstream are added to the history

  • +
  • Your local commits are re-applied one by one

  • +
  • If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase.

  • +
  • When done rebasing, you will see all of your commits in the history.

  • +
+
+
+
+

Submitting a Pull Request

+

Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream.

+

In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged.

+
+

Commit History

+

To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits.

+
# Inspect your commit history to determine if you need to squash commits
+git log
+
+# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean.
+# In this example, the last 5 commits will be opened in the git rebase tool.
+git rebase -i HEAD~5
+
+
+

Once your commit history is clean, ensure you have based on the latest upstream before you open the PR.

+
+
+

Commit messages

+

Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good!

+

If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed.

+

Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you’ve forgotten everything about what you just did, and you need to get up to speed quickly.

+

If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don’t want to close the associated issue just put #1234 and the change will get linked into the issue.

+

Here is an example of a short commit message:

+
sidecar: log on reconcile loop - fixes #1234
+
+
+

And here is an example of a longer one:

+

+api: now supports host networking (#1234)
+
+The operator CRD now has a "network" property that can be used to
+select host networking as well as setting the apropriate DNS policy.
+
+Fixes #1234
+
+
+
+
+

Submitting

+

Go to the Scylla Operator github to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR.

+

After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/eks.html b/v1.10/eks.html new file mode 100644 index 00000000000..756da3b1498 --- /dev/null +++ b/v1.10/eks.html @@ -0,0 +1,721 @@ + + + + + + + + + + + + + Deploying Scylla on EKS | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla on EKS

+

This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won’t work with different machine tiers. +It sets up the kubelets on EKS nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+
+# From inside the examples/eks folder
+cd examples/eks
+./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION"
+
+
+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

EKS Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+CLUSTER_NAME=scylla-demo
+
+
+
+
+

Creating an EKS cluster

+

For this guide, we’ll create an EKS cluster with the following:

+
    +
  • A NodeGroup of 3 i3-2xlarge Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having scylla-clusters toleration.

  • +
+
  - name: scylla-pool
+    instanceType: i3.2xlarge
+    desiredCapacity: 3
+    labels:
+      scylla.scylladb.com/node-type: scylla
+    taints:
+      role: "scylla-clusters:NoSchedule"
+    ssh:
+      allow: true
+    kubeletExtraConfig:
+      cpuManagerPolicy: static
+
+
+
    +
  • A NodeGroup of 4 c4.2xlarge Nodes to deploy cassandra-stress later on. These nodes will only accept pods having cassandra-stress toleration.

  • +
+
  - name: cassandra-stress-pool
+    instanceType: c4.2xlarge
+    desiredCapacity: 4
+    labels:
+      pool: "cassandra-stress-pool"
+    taints:
+      role: "cassandra-stress:NoSchedule"
+    ssh:
+      allow: true
+
+
+
    +
  • A NodeGroup of 1 i3.large Node, where the monitoring stack and operator will be deployed.

  • +
+
  - name: monitoring-pool
+    instanceType: i3.large
+    desiredCapacity: 1
+    labels:
+      pool: "monitoring-pool"
+    ssh:
+      allow: true
+
+
+
+
+
+

Prerequisites

+
+

Installing script third party dependencies

+

Script requires several dependencies:

+
    +
  • eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

  • +
  • kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/

  • +
+
+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting an EKS cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
eksctl delete cluster "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/generic.html b/v1.10/generic.html new file mode 100644 index 00000000000..de4631dad04 --- /dev/null +++ b/v1.10/generic.html @@ -0,0 +1,942 @@ + + + + + + + + + + + + + Deploying Scylla on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla on a Kubernetes Cluster

+

This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment:

+ +
+

Prerequisites

+ +
+
+

Running locally

+

Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and Minikube makes it a breeze.

+

We need to give minikube a little bit more resources than default so start minikube like this:

+
minikube start --cpus=6
+
+
+

Then make kubectl aware of this local installation like this:

+
eval $(minikube docker-env)
+
+
+
+
+

Download Scylla Operator

+

In this guide you will be using the examples and manifests from Scylla Operator repository, so start off by cloning it to your local machine.

+
git clone git@github.com:scylladb/scylla-operator.git
+cd scylla-operator
+
+
+
+
+

Deploy Cert Manager

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

This will install Cert Manager to provision a self-signed certificate.

+

Once it’s deployed, wait until Cert Manager is ready:

+
kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io
+kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook
+
+
+
+
+

Deploy Scylla Operator

+

Deploy the Scylla Operator using the following commands:

+
kubectl apply -f examples/common/operator.yaml
+
+
+

This will install the operator in namespace scylla-operator. +Wait until it’s ready:

+
kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
+kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
+
+
+

If you want to check the logs of the operator you can do so with:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+
+
+

Create and Initialize a Scylla Cluster

+

Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the clusters.scylla.scylladb.com resource. +Some of that resource’s values are configurable, so feel free to browse cluster.yaml and tweak the settings to your liking. +Full details for all the configuration options can be found in the Scylla Cluster CRD documentation.

+

When you are ready to create a Scylla cluster, simply run:

+
kubectl create -f examples/generic/cluster.yaml
+
+
+

We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment.

+
kubectl -n scylla get ScyllaCluster
+
+
+

Checking the pods that are created is as easy as:

+
kubectl -n scylla get pods
+
+
+

The output should be something like:

+
NAME                                    READY   STATUS    RESTARTS   AGE
+simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          9m49s
+simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          7m43s
+simple-cluster-us-east-1-us-east-1a-2   2/2     Running   0          6m46s
+
+
+

It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER as specified in cluster.yaml.

+

In the above example we have the following properties:

+
    +
  • CLUSTER_NAME: simple-cluster

  • +
  • DATACENTER_NAME: us-east-1

  • +
  • RACK_NAME: us-east-1a

  • +
  • INSTANCE_NUMBER: An automatically generated number attached to the pod name.

  • +
+

We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want.

+

To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in cluster.yaml:

+
kubectl -n scylla get pod -l app=scylla
+
+
+

You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run:

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+

Checking the logs of the running scylla instances can be done like this:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla
+
+
+
+

Configure host networking

+

To squeeze the most out of your deployment it is sometimes necessary to employ host networking. +To enable this the CRD allows for specifying a network parameter as such:

+
version: 4.0.0
+  agentVersion: 2.0.2
+  cpuset: true
+  network:
+    hostNetworking: true
+
+
+

This will result in hosts network to be used for the Scylla Stateful Set deployment.

+
+
+

Configure container kernel parameters

+

Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property sysctls that is a list of the desired key-value pairs to set.

+

For example: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls tofs.aio-max-nr=N.

+
spec:
+  sysctls:
+  - "fs.aio-max-nr=2097152"
+
+
+
+
+

Deploying Alternator

+

The operator is also capable of deploying Alternator instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the cluster.yaml file from this:

+
spec:
+  version: 4.0.0
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

to this:

+
spec:
+  version: 4.0.0
+  alternator:
+    port: 8000
+    writeIsolation: only_rmw_uses_lwt
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

You can specify whichever port you want.

+

You must provide desired write isolation, supported values are: “always”, “forbid_rmw”, “only_rmw_uses_lwt”. +Difference between those isolation levels can be found in Scylla Alternator documentation.

+

Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster.

+
+
+
+

Accessing the Database

+
    +
  • From kubectl:

  • +
+

To get a cqlsh shell in your new Cluster:

+
kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh
+> DESCRIBE KEYSPACES;
+
+
+
    +
  • From inside a Pod:

  • +
+

When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service’s name follows the convention <cluster-name>-client. +You can see this Service in your cluster by running:

+
kubectl -n scylla describe service simple-cluster-client
+
+
+

Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here’s an example using the Python Driver:

+
from cassandra.cluster import Cluster
+
+cluster = Cluster(['simple-cluster-client.scylla.svc'])
+session = cluster.connect()
+
+
+

If you are running the Alternator you can access the API on the port you specified using plain http.

+
+
+

Configure Scylla

+

The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called scylla.yaml that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration.

+
    +
  • Create a ConfigMap the default name that the operator uses is scylla-config:

  • +
+
kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml
+
+
+
    +
  • Wait for the mount to propagate and then restart the cluster:

  • +
+
kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a
+
+
+
    +
  • The new config should be applied automatically by the operator, check the logs to be sure.

  • +
+

Configuring cassandra-rackdc.properties is done by adding the file to the same mount as scylla.yaml.

+
kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f -
+
+
+

The operator will then apply the overridable properties prefer_local and dc_suffix if they are available in the provided mounted file.

+
+
+

Configure Scylla Manager Agent

+

The operator creates a second container for each scylla instance that runs Scylla Manager Agent. +This container serves as a sidecar and it’s the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups.

+

To configure the agent you just create a new secret called scylla-agent-config-secret and populate it with the contents in the scylla-manager-agent.yaml file like this:

+
kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml
+
+
+

See Scylla Manager Agent configuration for a complete reference of the Scylla Manager agent config file.

+
+

Scylla Manager Agent auth token

+

Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it’s empty. +To check which value is being used, decode content of <cluster-name>-auth-token secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart.

+
+
+
+

Set up monitoring

+

To set up monitoring using Prometheus and Grafana follow this guide.

+
+
+

Scale Up

+

The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale up a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • To add a new rack, append the racks list with a new rack. Remember to choose a different rack name for the new rack.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Benchmark with cassandra-stress

+

After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster.

+
+

Because cassandra-stress doesn’t scale well to multiple cores, we use multiple jobs with a small core count for each

+
+
# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each.
+# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec.
+hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000
+kubectl apply -f scripts/cassandra-stress.yaml
+
+
+

Make sure you set the proper arguments in case you have altered things such as name or namespace.

+
./hack/cass-stress-gen.py -h
+usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT]
+                          [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR]
+
+Generate cassandra-stress job templates for Kubernetes.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --num-jobs NUM_JOBS   number of Kubernetes jobs to generate - defaults to 1
+  --name NAME           name of the generated yaml file - defaults to cassandra-stress
+  --namespace NAMESPACE
+                        namespace of the cassandra-stress jobs - defaults to "default"
+  --scylla-version SCYLLA_VERSION
+                        version of scylla server to use for cassandra-stress - defaults to 4.0.0
+  --host HOST           ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc
+  --cpu CPU             number of cpus that will be used for each job - defaults to 1
+  --memory MEMORY       memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu
+  --ops OPS             number of operations for each job - defaults to 10000000
+  --threads THREADS     number of threads used for each job - defaults to 50 * cpu
+  --limit LIMIT         rate limit for each job - defaults to no rate-limiting
+  --connections-per-host CONNECTIONS_PER_HOST
+                        number of connections per host - defaults to number of cpus
+  --print-to-stdout     print to stdout instead of writing to a file
+  --nodeselector NODESELECTOR
+                        nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla
+
+
+

While the benchmark is running, open up Grafana and take a look at the monitoring metrics.

+

After the Jobs finish, clean them up with:

+
kubectl delete -f scripts/cassandra-stress.yaml
+
+
+
+
+

Scale Down

+

The operator supports scale down of a rack. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale down a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Clean Up

+

To clean up all resources associated with this walk-through, you can run the commands below.

+

NOTE: this will destroy your database and delete all of its associated data.

+
kubectl delete -f examples/generic/cluster.yaml
+kubectl delete -f examples/common/operator.yaml
+kubectl delete -f examples/common/cert-manager.yaml
+
+
+
+
+

Troubleshooting

+

If the cluster does not come up, the first step would be to examine the operator’s logs:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+

If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/genindex.html b/v1.10/genindex.html new file mode 100644 index 00000000000..f740ca5d8c5 --- /dev/null +++ b/v1.10/genindex.html @@ -0,0 +1,550 @@ + + + + + + + + + + + + + Index | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ + + +
+ + + + + +
+ + +
+ +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/gke.html b/v1.10/gke.html new file mode 100644 index 00000000000..249d1ecc966 --- /dev/null +++ b/v1.10/gke.html @@ -0,0 +1,759 @@ + + + + + + + + + + + + + Deploying Scylla on GKE | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla on GKE

+

This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+GCP_USER=$(gcloud config list account --format "value(core.account)")
+GCP_PROJECT=$(gcloud config list project --format "value(core.project)")
+GCP_ZONE=us-west1-b
+
+# From inside the examples/gke folder
+cd examples/gke
+./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE"
+
+# Example:
+# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b
+
+
+

:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region.

+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

Google Kubernetes Engine Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
GCP_USER=$( gcloud config list account --format "value(core.account)" )
+GCP_PROJECT=$( gcloud config list project --format "value(core.project)" )
+GCP_REGION=us-west1
+GCP_ZONE=us-west1-b
+CLUSTER_NAME=scylla-demo
+CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" )
+
+
+
+
+

Creating a GKE cluster

+

First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called systemconfig.yaml with the following content:

+
kubeletConfig:
+  cpuManagerPolicy: static
+
+
+

Then we’ll create a GKE cluster with the following:

+
    +
  1. A NodePool of 2 n1-standard-8 Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes.

    +
    gcloud container \
    +clusters create "${CLUSTER_NAME}" \
    +--cluster-version "${CLUSTER_VERSION}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-8" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--image-type "UBUNTU_CONTAINERD" \
    +--system-config-from-file=systemconfig.yaml \
    +--enable-stackdriver-kubernetes \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  2. +
  3. A NodePool of 2 n1-standard-32 Nodes to deploy cassandra-stress later on.

    +
    gcloud container --project "${GCP_PROJECT}" \
    +node-pools create "cassandra-stress-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--zone "${GCP_ZONE}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--node-taints role=cassandra-stress:NoSchedule \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  4. +
  5. A NodePool of 4 n1-standard-32 Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as raw block devices. It is important to disable autoupgrade and autorepair. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it’s better to handle upgrades manually, with more control over the process and error handling.

    +
    gcloud container \
    +node-pools create "scylla-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "4" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--local-nvme-ssd-block count="8" \
    +--node-taints role=scylla-clusters:NoSchedule \
    +--node-labels scylla.scylladb.com/node-type=scylla \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  6. +
+
+
+

Setting Yourself as cluster-admin

+
+

(By default GKE doesn’t give you the necessary RBAC permissions)

+
+

Get the credentials for your new cluster

+
gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}"
+
+
+

Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission container.clusterRoleBindings.create. +The easiest way to obtain this permission is to enable the Kubernetes Engine Admin role for your user in the GCP IAM web interface.

+
kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}"
+
+
+
+
+
+

Prerequisites

+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Deploy Scylla cluster

+

In order for the example to work you need to modify the cluster definition in the following way:

+
sed -i "s/<gcp_region>/${GCP_REGION}/g;s/<gcp_zone>/${GCP_ZONE}/g" examples/gke/cluster.yaml
+
+
+

This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created.

+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to install the operator and launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting a GKE cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/helm.html b/v1.10/helm.html new file mode 100644 index 00000000000..2a07e3224c8 --- /dev/null +++ b/v1.10/helm.html @@ -0,0 +1,915 @@ + + + + + + + + + + + + + Deploying Scylla stack using Helm Charts | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla stack using Helm Charts

+

In this example we will install Scylla stack on Kubernetes. This includes the following components:

+
    +
  • Scylla Operator

  • +
  • Scylla Manager

  • +
  • Scylla

  • +
+

We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator.

+
+

Prerequisites

+
    +
  • Kubernetes 1.16+

  • +
  • Helm 3+

  • +
+
+
+

TL;DR

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+kubectl apply -f examples/common/cert-manager.yaml 
+helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator
+helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager
+helm install scylla scylla/scylla --create-namespace --namespace scylla
+
+
+
+
+

Deploy Cert Manager

+

This step is optional if you want to use your own certificate. +If you don’t have one, make sure to not disable autogeneration using Scylla Operator Helm Chart.

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

Once it’s deployed, wait until all Cert Manager pods will enter into Running state:

+
kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s
+
+
+
+
+

Helm Chart repository

+

To install Scylla Helm Chart repository execute the following commands:

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+
+
+

Then you can search through repository, it should contain at least three Helm charts:

+
helm search repo scylla
+NAME                   CHART VERSION   APP VERSION     DESCRIPTION                                       
+scylla/scylla          1.0.1           v1.0.1          Scylla is a close-to-the-hardware rewrite of Ca...
+scylla/scylla-manager  1.0.1           v1.0.1          Scylla Manager automates database operations.     
+scylla/scylla-operator 1.0.1           v1.0.1          Scylla Operator is a Kubernetes Operator for ma...
+
+
+

All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit.

+
+
+

Scylla Operator Chart

+

This chart is very simple, most interesting customizable fields are image, resources and webhook. +All others can be looked up in Chart source in Scylla Operator repository.

+
+

image

+

Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change pullPolicy if default one does not +fullfill your needs. In Kubernetes documentation you +can read more about different pull policies.

+

Image URL will be composed based on these fields in follwing pattern: +repository/scylla-operator:tag

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+
+
+

resources

+

You can customize how much resources will be allocated for Operator pods via resource field:

+
resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 32Mi
+
+
+

To read more about resource specification, follow Kubernetes documentation.

+
+
+

webhook

+

Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate.

+

createSelfSignedCertificate specifies whether a self-signed certificate should be created using Cert Manager +certificateSecretName: name of a secret containing custom certificate.

+
webhook:
+  createSelfSignedCertificate: true
+  certificateSecretName: ""
+
+
+
+
+

Customization

+

You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values.

+

You can find an example in Scylla Operator repository under examples/helm/values.operator.yaml

+
+
+

Installation

+

To deploy Scylla Operator using customized values file execute the following:

+
helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator
+
+
+
+
+
+

Scylla Helm Chart

+

Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it.

+
+

Customization

+

Versions of images used in the cluster can be set via scyllaImage and agentImage

+
scyllaImage:
+  repository: scylladb/scylla
+  tag: 4.3.0
+
+agentImage:
+  repository: scylladb/scylla-manager-agent
+  tag: 2.2.1
+
+
+

A minimal Scylla cluster can be expressed as:

+
datacenter: us-east-1
+racks:
+- name: us-east-1b
+  members: 2
+  storage:
+    capacity: 5G
+  resources:
+    limits:
+      cpu: 1
+      memory: 1Gi
+    requests:
+      cpu: 1
+      memory: 1Gi
+
+
+

Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory.

+

For other customizable fields, please refer to ScyllaCluster CRD definition. +CRD Rack Spec and Helm Chart Rack should have the same fields.

+
+
+

Installation

+

To deploy Scylla cluster using customzied values file execute the following command:

+
helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla
+
+
+

Scylla Operator will provision this cluster on your K8s environment.

+
+
+
+

Scylla Manager Helm Chart

+

Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster.

+

To read more about Scylla Manager see Manager guide.

+
+

Scylla Manager

+

To set version of used Scylla Manager you can use image field:

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: 2.2.1
+
+
+

To control how many resources are allocated for Scylla Manager use resource field:

+
resources:
+  limits:
+    cpu: 500m
+    memory: 500Mi
+  requests:
+    cpu: 500m
+    memory: 500Mi
+
+
+
+
+

Scylla Manager Controller

+

Similarly Scylla Manager Controller image can be customized:

+
controllerImage:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+

And allocated resources:

+
controllerResources:
+  limits:
+    cpu: 100m
+    memory: 30Mi
+  requests:
+    cpu: 100m
+    memory: 20Mi
+
+
+
+
+

Scylla

+

To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It’s definition should land as a scylla field.

+
+
+

Customization

+

All others customizable fields can be looked up in Chart source in Scylla Operator repository.

+
+
+

Installation

+

To deploy Scylla Manager using customized values file execute the following command:

+
helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager
+
+
+
+
+
+

Results

+

Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn’t it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces.

+

Scylla Operator:

+
$ kubectl -n scylla-operator get all
+
+NAME                                   READY   STATUS    RESTARTS   AGE
+pod/scylla-operator-5dbcb54f5c-vjm4m   1/1     Running   0          51s
+pod/scylla-operator-5dbcb54f5c-wfjbw   1/1     Running   0          51s
+
+NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
+service/scylla-operator-webhook   ClusterIP   10.105.207.130   <none>        443/TCP   51s
+
+NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-operator   2/2     2            2           51s
+
+NAME                                         DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-operator-5dbcb54f5c   2         2         2       51s
+
+
+

Operator is running!

+

Scylla Manager:

+
$ kubectl -n scylla-manager get all 
+
+NAME                                             READY   STATUS    RESTARTS   AGE
+pod/scylla-manager-669db64dd-bcm4v               1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-drbth   1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-rhwqx   1/1     Running   0          89s
+
+NAME                            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
+service/scylla-manager          ClusterIP   10.105.231.53   <none>        80/TCP,5090/TCP     89s
+service/scylla-manager-client   ClusterIP   None            <none>        9180/TCP,5090/TCP   89s
+
+NAME                                        READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-manager              1/1     1            1           89s
+deployment.apps/scylla-manager-controller   2/2     2            2           89s
+
+NAME                                                   DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-manager-669db64dd               1         1         1       89s
+replicaset.apps/scylla-manager-controller-844ccc56c4   2         2         2       89s
+
+
+

Good to go, ready to serve!

+

Scylla itself:

+
$ kubectl -n scylla get all        
+
+NAME                                READY   STATUS    RESTARTS   AGE
+pod/scylla-us-east-1-us-east-1b-0   2/2     Running   0          5m58s
+pod/scylla-us-east-1-us-east-1b-1   2/2     Running   0          4m29s
+
+NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
+service/scylla-client                   ClusterIP   None           <none>        9180/TCP,5090/TCP                                                 5m59s
+service/scylla-us-east-1-us-east-1b-0   ClusterIP   10.43.149.92   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   5m58s
+service/scylla-us-east-1-us-east-1b-1   ClusterIP   10.43.49.0     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   4m29s
+
+NAME                                           READY   AGE
+statefulset.apps/scylla-us-east-1-us-east-1b   2/2     5m59s
+
+
+

Two running nodes, exactly what we were asking for.

+
+
+

Monitoring

+

To spin up a Prometheus monitoring refer to monitoring guide.

+

Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor:

+
serviceMonitor:
+  create: false
+
+
+

Change create to true and update your current deployment using:

+
helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml
+
+
+

Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics.

+
+
+

Cleanup

+

To remove these applications you can simply uninstall them using Helm CLI:

+
helm uninstall scylla -n scylla
+helm uninstall scylla-manager -n scylla-manager
+helm uninstall scylla-operator -n scylla-operator
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/index.html b/v1.10/index.html new file mode 100644 index 00000000000..96f18589084 --- /dev/null +++ b/v1.10/index.html @@ -0,0 +1,594 @@ + + + + + + + + + + + + + Scylla Operator Documentation | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Scylla Operator Documentation

+
+
+

Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades.

+_images/logo.png +

For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University.

+

scylla-operator is a Kubernetes Operator for managing Scylla clusters.

+

Currently it supports:

+
    +
  • Deploying multi-zone clusters

  • +
  • Scaling up or adding new racks

  • +
  • Scaling down

  • +
  • Monitoring with Prometheus and Grafana

  • +
  • Integration with Scylla Manager

  • +
  • Dead node replacement

  • +
  • Version Upgrade

  • +
  • Backup

  • +
  • Repairs

  • +
  • Autohealing

  • +
  • Monitoring with Prometheus and Grafana

  • +
+

Choose a topic to begin:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/known-issues.html b/v1.10/known-issues.html new file mode 100644 index 00000000000..5c0446994c7 --- /dev/null +++ b/v1.10/known-issues.html @@ -0,0 +1,591 @@ + + + + + + + + + + + + + Known issues | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Known issues

+
+

Scylla Manager does not boot up on Minikube

+

If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for TRUNCATE queries.

+
+
+

TRUNCATE queries does not work on Minikube

+

The TRUNCATE queries requires hairpinning to be enabled. On minikube this is disabled by default.

+

To fix it execute the following command:

+
minikube ssh sudo ip link set docker0 promisc on
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/manager.html b/v1.10/manager.html new file mode 100644 index 00000000000..d4bac06a088 --- /dev/null +++ b/v1.10/manager.html @@ -0,0 +1,802 @@ + + + + + + + + + + + + + Deploying Scylla Manager on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Deploying Scylla Manager on a Kubernetes Cluster

+

Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way.

+

Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager Proprietary Software License Agreement for details.

+
+

Prerequisites

+ +
+
+

Architecture

+

Scylla Manager in K8s consist of:

+
    +
  • Dedicated Scylla Cluster

    +

    Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace.

    +
  • +
  • Scylla Manager Controller

    +

    Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states.

    +
      +
    1. What user wants - task definition in CRD.

    2. +
    3. What Controller registered - Task name to Task ID mapping - CRD status.

    4. +
    5. Scylla Manager task listing - internal state of Scylla Manager.

    6. +
    +

    When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling.

    +
  • +
  • Scylla Manager

    +

    Regular Scylla Manager, the same used in cloud and bare metal deployments.

    +
  • +
+
+
+

Deploy Scylla Manager

+

Deploy the Scylla Manager using the following commands:

+
kubectl apply -f examples/common/manager.yaml
+
+
+

This will install the Scylla Manager in the scylla-manager namespace. +You can check if the Scylla Manager is up and running with:

+
kubectl -n scylla-manager get pods
+NAME                                               READY   STATUS    RESTARTS   AGE
+scylla-manager-cluster-manager-dc-manager-rack-0   2/2     Running   0          37m
+scylla-manager-controller-0                        1/1     Running   0          28m
+scylla-manager-scylla-manager-7bd9f968b9-w25jw     1/1     Running   0          37m
+
+
+

As you can see there are three pods:

+
    +
  • scylla-manager-cluster-manager-dc-manager-rack-0 - is a single node Scylla cluster.

  • +
  • scylla-manager-controller-0 - Scylla Manager Controller.

  • +
  • scylla-manager-scylla-manager-7bd9f968b9-w25jw - Scylla Manager.

  • +
+

To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command:

+
kubectl -n scylla-manager logs scylla-manager-controller-0
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+
+
+

To check logs of Scylla Manager itself, use following command:

+
kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+
+
+

If there are no errors in the logs, let’s spin a Scylla Cluster.

+
+
+

Cluster registration

+

When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster.

+

See generic tutorial to spawn your cluster.

+

Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager.

+

Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager.

+
kubectl -n scylla describe Cluster
+
+[...]
+Status:
+ Manager Id:  d1d532cd-49f2-4c97-9263-25126532803b
+ Racks:
+   us-east-1a:
+     Members:        3
+     Ready Members:  3
+     Version:        4.0.0
+
+
+

You can use this ID to talk to Scylla Manager using sctool CLI installed in Scylla Manager Pod. +You can also use Cluster name in namespace/cluster-name format.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator).

+

In this task listing we can see CQL and REST healthchecks.

+
+
+

Task scheduling

+

You can either define tasks prior Cluster creation, or for existing Cluster. +Let’s edit already running cluster definition to add repair and backup task.

+
kubectl -n scylla edit Cluster simple-cluster
+
+
+

Add following task definition to Cluster spec:

+
  repairs:
+    - name: "users repair"
+      keyspace: ["users"]
+      interval: "1d"
+  backup:
+    - name: "weekly backup"
+      location: ["s3:cluster-backups"]
+      retention: 3
+      interval: "7d"
+    - name: "daily backup"
+      location: ["s3:cluster-backups"]
+      retention: 7
+      interval: "1d"
+
+
+

For full task definition configuration consult Scylla Cluster CRD.

+

Note: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up.

+

Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372                 │ -L s3:cluster-backups  --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d)  │ NEW    │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a                 │                                      │ 23 Sep 20 14:38:42 CEST        │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly.

+

To check progress of run you can use following command:

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a
+Status:         RUNNING
+Start time:     23 Sep 20 14:38:42 UTC
+Duration:       13s
+Progress:       2.69%
+Datacenters:
+  - us-east-1
++--------------------+-------+
+| system_auth        | 8.06% |
+| system_distributed | 0.00% |
+| system_traces      | 0.00% |
++--------------------+-------+
+
+
+

Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing.

+
+
+

Clean Up

+

To clean up all resources associated with Scylla Manager, you can run the commands below.

+

NOTE: this will destroy your Scylla Manager database and delete all of its associated data.

+
kubectl delete -f examples/common/manager.yaml
+
+
+
+
+

Troubleshooting

+

Manager is not running

+

If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs:

+
kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller
+kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

My task wasn’t scheduled

+

If your task wasn’t scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs.

+

Example:

+

Following status describes error when backup task cannot be scheduled, due to lack of access to bucket:

+
Status:
+  Backups:
+    Error:     create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug"
+    Id:        00000000-0000-0000-0000-000000000000
+    Interval:  0
+    Location:
+      s3:manager-test
+    Name:         adhoc backup
+    Num Retries:  3
+    Retention:    3
+    Start Date:   now
+  Manager Id:     2b9dbe8c-9daa-4703-a66d-c29f63a917c8
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.0.0
+
+
+

Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status.

+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/migration.html b/v1.10/migration.html new file mode 100644 index 00000000000..5fbf5433a48 --- /dev/null +++ b/v1.10/migration.html @@ -0,0 +1,737 @@ + + + + + + + + + + + + + Version migrations | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Version migrations

+
+

v0.3.0 -> v1.0.0 migration

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common kind +which is easier to disambiguate (ScyllaCluster). +This change is backward incompatible, which means manual migration is needed.

+

This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the upgrade guide where full deletion is requested, this procedure shouldn’t cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn’t run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first.

+

Read the whole procedure and make sure you understand what is going on before executing any of the commands!

+

In case of any issues or questions regarding this procedure, you’re welcomed on our Scylla Users Slack +on #kubernetes channel.

+
+
+

Procedure

+
    +
  1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +

    All below commands will use scylla namespace and simple-cluster as a cluster name.

    +
  2. +
  3. Make sure you’re using v1.0.0 tag:

    +
    git checkout v1.0.0
    +
    +
    +
  4. +
  5. Upgrade your cert-manager to v1.0.0. If you installed it from a static file from this repo, simply execute the following:

    +
     kubectl apply -f examples/common/cert-manager.yaml
    +
    +
    +

    If your cert-manager was installed in another way, follow official instructions on cert-manager website.

    +
  6. +
  7. examples/common/operator.yaml file contains multiple resources. Extract only CustomResourceDefinition to separate file.

  8. +
  9. Install v1.0.0 CRD definition from file created in the previous step:

    +
    kubectl apply -f examples/common/crd.yaml
    +
    +
    +
  10. +
  11. Save your existing simple-cluster Cluster definition to a file:

    +
    kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml
    +
    +
    +
  12. +
  13. Migrate Kind and ApiVersion to new values using:

    +
    sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml
    +sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml
    +
    +
    +
  14. +
  15. Install migrated CRD instance

    +
    kubectl apply -f existing-cluster.yaml
    +
    +
    +

    At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator.

    +
  16. +
  17. Get UUID of newly created ScyllaCluster resource:

    +
    kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}"
    +
    +12a3678d-8511-4c9c-8a48-fa78d3992694
    +
    +
    +

    Save output UUID somewhere, it will be referred as <new-cluster-uid> in commands below.

    +

    Depending on your shell, you might get additional ‘%’ sign at the end of UUID, make sure to remove it!

    +
  18. +
  19. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters:

    +
    kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]'
    +
    +
    +

    Amend role name according to your cluster name, it should look like <scylla-cluster-name>-member.

    +
  20. +
  21. Get a list of all Services associated with your cluster. First get list of all services:

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          109m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   108m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   106m
    +
    +
    +
  22. +
  23. For each service, change its ownerReference to point to new CRD instance:

    +
     kubectl -n scylla patch svc <cluster-svc-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-svc-name> with Service name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  24. +
  25. Get a list of all Services again to see if none was deleted. Check also “Age” column, it shouldn’t be lower than previous result.

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          110m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   110m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   107m
    +
    +
    +
  26. +
  27. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  28. +
  29. For each StatefulSet from previous step, change its ownerReference to point to new CRD instance.

    +
     kubectl -n scylla patch sts <cluster-sts-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  30. +
  31. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. +Checkout v0.3.0 version, and remove Scylla Operator, and old CRD:

    +
     git checkout v0.3.0
    + kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  32. +
  33. Checkout v1.0.0, and install upgraded Scylla Operator:

    +
     git checkout v1.0.0
    + kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  34. +
  35. Wait until Scylla Operator boots up:

    +
     kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s
    +
    +
    +
  36. +
  37. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  38. +
  39. For each StatefulSet from previous step, change its sidecar container image to v1.0.0, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one.

    +
    kubectl -n scylla patch sts <cluster-sts> --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +kubectl -n scylla rollout status sts <cluster-sts>
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name.

    +
  40. +
  41. If you’re using Scylla Manager, bump Scylla Manager Controller image to v1.0.0

    +
     kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +
    +
    +
  42. +
  43. Your Scylla cluster is now migrated to v1.0.0.

  44. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/monitoring.html b/v1.10/monitoring.html new file mode 100644 index 00000000000..09a54c067dc --- /dev/null +++ b/v1.10/monitoring.html @@ -0,0 +1,784 @@ + + + + + + + + + + + + + Monitoring | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Monitoring

+

Scylla Operator 1.8 introduced a new API resource ScyllaDBMonitoring, allowing users to deploy a managed monitoring +setup for their Scylla Clusters.

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: ScyllaDBMonitoring
+metadata:
+  name: example
+spec:
+  type: Platform
+  endpointsSelector:
+    matchLabels:
+      app.kubernetes.io/name: scylla
+      scylla-operator.scylladb.com/scylla-service-type: identity
+      scylla/cluster: replace-with-your-scyllacluster-name
+  components:
+    prometheus:
+      storage:
+        volumeClaimTemplate:
+          spec:
+            resources:
+              requests:
+                storage: 1Gi
+    grafana:
+      exposeOptions:
+        webInterface:
+          ingress:
+            ingressClassName: haproxy
+            dnsDomains:
+            - test-grafana.test.svc.cluster.local
+            annotations:
+              haproxy-ingress.github.io/ssl-passthrough: "true"
+
+
+

For details, refer to the below command:

+
$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1
+
+
+
+

Deploy managed monitoring

+

Note: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions.

+
+

Requirements

+

Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see:

+ +

The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps.

+
+

Deploy Prometheus Operator

+

Deploy Prometheus Operator using kubectl:

+
$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator
+
+
+
+
Wait for Prometheus Operator to roll out
+
$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator
+deployment "prometheus-operator" successfully rolled out
+
+
+
+
+
+

Deploy HAProxy Ingress

+

Deploy HAProxy Ingress using kubectl:

+
$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress
+
+
+
+
Wait for HAProxy Ingress to roll out
+
$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress
+deployment "haproxy-ingress" successfully rolled out
+
+
+
+
+
+
+

Deploy ScyllaDBMonitoring

+

First, update the endpointsSelector in examples/monitoring/v1alpha1/scylladbmonitoring.yaml with a label +matching your ScyllaCluster instance name.

+

Deploy the monitoring setup using kubectl:

+
$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml
+
+
+

Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources.

+
+

Wait for ScyllaDBMonitoring to roll out

+
$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+
+
+
+

Wait for Prometheus to roll out

+
$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example
+statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb...
+
+
+
+
+

Wait for Grafana to roll out

+
$ kubectl rollout status --timeout=5m deployments.apps/example-grafana
+deployment "example-grafana" successfully rolled out
+
+
+
+
+
+

Accessing Grafana

+

For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller’s IP address but most clients and tools allow setting the SNI field manually.

+
+
+

Prerequisites

+

To access Grafana, you first need to collect the serving CA and the credentials.

+
$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )"
+$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )"
+$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )"
+
+
+
+
+

Connecting through Ingress using a resolvable domain

+

In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like *.app.mydomain pointing to the Ingress controller’s external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller’s A record.

+

Note: The ScyllaDBMonitoring example creates an Ingress object with test-grafana.test.svc.cluster.local DNS domain that you should adjust to your domain. Below examples use example-grafana.apps.mydomain.

+

Note: To test a resolvable domain from your machine without creating DNS records, you can adjust /etc/hosts or similar.

+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+

Connecting through Ingress using an unresolvable domain

+

To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller’s IP that can be resolved externally. Again, there are many ways to do so beyond the below examples.

+

Unless stated otherwise, we assume your Ingress is running on port 443.

+
$ INGRESS_PORT=443
+
+
+
+

Variants

+
+
Ingress ExternalIP
+

When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address.

+
$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )"
+
+
+
+
+
Ingress NodePort
+

NodePort is slightly less convenient, but it’s available in development clusters as well.

+
$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )"
+$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )"
+
+
+
+
+
Connection
+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/nodeoperations/automatic-cleanup.html b/v1.10/nodeoperations/automatic-cleanup.html new file mode 100644 index 00000000000..58a341800f6 --- /dev/null +++ b/v1.10/nodeoperations/automatic-cleanup.html @@ -0,0 +1,576 @@ + + + + + + + + + + + + + Automatic cleanup and replacement in case when k8s node is lost | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Automatic cleanup and replacement in case when k8s node is lost

+

In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity.

+

When automaticOrphanedNodeCleanup flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/nodeoperations/index.html b/v1.10/nodeoperations/index.html new file mode 100644 index 00000000000..78789dd0d71 --- /dev/null +++ b/v1.10/nodeoperations/index.html @@ -0,0 +1,576 @@ + + + + + + + + + + + + + Node operations using Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Node operations using Scylla Operator

+
+
+

Choose a topic:

+ +
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+ + + + + + + \ No newline at end of file diff --git a/v1.10/nodeoperations/maintenance-mode.html b/v1.10/nodeoperations/maintenance-mode.html new file mode 100644 index 00000000000..5fbaf87c498 --- /dev/null +++ b/v1.10/nodeoperations/maintenance-mode.html @@ -0,0 +1,585 @@ + + + + + + + + + + + + + Maintenance mode | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Maintenance mode

+

When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive.

+

This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again.

+

To enable maintenance mode add scylla/node-maintenance label to service in front of Scylla Pod.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance=""
+
+
+

To disable, simply remove this label from service.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance-
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/nodeoperations/replace-node.html b/v1.10/nodeoperations/replace-node.html new file mode 100644 index 00000000000..39d3ebbc74c --- /dev/null +++ b/v1.10/nodeoperations/replace-node.html @@ -0,0 +1,659 @@ + + + + + + + + + + + + + Replacing a Scylla node | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ Menu +
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+

Replacing a Scylla node

+
+

Replacing a dead node

+

In the case of a host failure, it may not be possible to bring back the node to life.

+

Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth).

+

This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time

+

Procedure

+
    +
  1. Verify the status of the node using nodetool status command, the node with status DN is down and need to be replaced

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.63 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +DN  10.43.43.51    74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  2. +
  3. Identify service which is bound to down node by checking IP address

    +
    kubectl -n scylla get svc
    +NAME                                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                           AGE
    +simple-cluster-client                   ClusterIP   None            <none>        9180/TCP                                                          3h12m
    +simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.231.189   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h12m
    +simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.125.110   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h11m
    +simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.43.51     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h5m
    +
    +
    +
  4. +
  5. Drain node which we would like to replace using. This command may delete your data from local disks attached to given node!

    +
    kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data
    +
    +
    +

    Pod which will be replaced should enter the Pending state

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h21m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h19m
    +simple-cluster-us-east-1-us-east-1a-2   0/2     Pending   0          8m14s
    +
    +
    +
  6. +
  7. To being node replacing, add scylla/replace="" label to service bound to pod we are replacing.

    +
    kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace=""
    +
    +
    +

    Your failed Pod should be recreated on available k8s node

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h27m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h25m
    +simple-cluster-us-east-1-us-east-1a-2   1/2     Running   0          9s
    +
    +
    +

    Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. +After bootstraping is over, your new Pod should be ready to go. +Old one shouldn’t be no longer visible in nodetool status

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.62 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +UN  10.43.191.172  74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  8. +
  9. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. +You can use Scylla Manager to run the repair.

  10. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/nodeoperations/restore.html b/v1.10/nodeoperations/restore.html new file mode 100644 index 00000000000..0ee4f47c5b4 --- /dev/null +++ b/v1.10/nodeoperations/restore.html @@ -0,0 +1,647 @@ + + + + + + + + + + + + + Restore from backup | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+

Restore from backup

+

This procedure will describe how to restore from backup taken using Scylla Manager to a fresh empty cluster of any size.

+

First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod.

+
sctool backup list -c <CLUSTER_ID> --all-clusters -L <BACKUP_LOCATION>
+
+
+

Where:

+
    +
  • CLUSTER_ID - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status.

  • +
  • BACKUP_LOCATION - is a location where backup is stored. For example, for bucket called backups stored in AWS S3, location is s3:backups.

  • +
+
sctool backup list -c simple-cluster --all-clusters -L s3:backups
+Snapshots:
+  - sm_20201227144037UTC (409MiB)
+  - sm_20201228145917UTC (434MiB)
+Keyspaces:
+  - users (9 tables)
+  - system_auth (2 tables)
+  - system_distributed (3 tables)
+  - system_schema (13 tables)
+  - system_traces (5 tables)
+
+
+

To get the list of files use:

+
sctool backup files -c <CLUSTER_ID> -L <BACKUP_LOCATION> -T <SNAPSHOT_TAG>
+
+
+

Where:

+
    +
  • SNAPSHOT_TAG - name of snapshot you want to restore.

  • +
+

Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example:

+
s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz      ./
+
+
+

To download this archive you can use AWS CLI tool aws s3 cp.

+

This archive contains a single CQL file for each keyspace in the backup.

+
tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz
+-rw------- 0/0           12671 2020-12-28 13:17 users.cql
+-rw------- 0/0            2216 2020-12-28 13:17 system_auth.cql
+-rw------- 0/0             921 2020-12-28 13:17 system_distributed.cql
+-rw------- 0/0           12567 2020-12-28 13:17 system_schema.cql
+-rw------- 0/0            4113 2020-12-28 13:17 system_traces.cql
+
+
+

Extract this archive and copy each schema file to one of the cluster Pods by:

+
kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla
+
+
+

To import schema simply execute:

+
kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql
+
+
+

Once the schema is recreated we can proceed to downloading data files.

+

First let’s save a list of snapshot files to file called backup_files.out:

+
kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out
+
+
+

We will be using sstableloader to restore data. sstableloader needs a specific directory structure to work namely: <keyspace>/<table>/<contents> +To create this directory structure and download all the files execute these commands:

+
mkdir snapshot
+cd snapshot
+# Create temporary directory structure.
+cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p
+# Download snapshot files.
+cat ../backup_files.out | xargs -n2 aws s3 cp
+
+
+

To load data into cluster pass cluster address to sstableloader together with path to data files and credentials:

+
sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password <password>
+
+
+

Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/nodeoperations/scylla-upgrade.html b/v1.10/nodeoperations/scylla-upgrade.html new file mode 100644 index 00000000000..b13fc3aa567 --- /dev/null +++ b/v1.10/nodeoperations/scylla-upgrade.html @@ -0,0 +1,658 @@ + + + + + + + + + + + + + Upgrading version of Scylla | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ Menu +
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+

Upgrading version of Scylla

+

To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition.

+

In this example cluster will be upgraded to version 4.4.5.

+
kubectl -n scylla patch ScyllaCluster simple-cluster  -p '{"spec":{"version": "4.4.5"}}' --type=merge
+
+
+

Operator supports two types of version upgrades:

+
    +
  1. Patch upgrade

  2. +
  3. Generic upgrade

  4. +
+

Patch upgrade

+

Patch upgrade is executed when only patch version change is detected according to semantic versioning format. +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one.

+

Example: 4.0.0 -> 4.0.1

+

Generic upgrade

+

Generic upgrades are executed for the non patch version changes.

+

Example: 4.0.0 -> 2020.1.0 or 4.0.0 -> 4.1.0 or even 4.0.0 -> nightly

+

User can observe current state of upgrade in ScyllaCluster status.

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+[...]
+Status:
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.1.9
+  Upgrade:
+    Current Node:         simple-cluster-us-east-1-us-east-1a-2
+    Current Rack:         us-east-1a
+    Data Snapshot Tag:    so_data_20201228135002UTC
+    From Version:         4.1.9
+    State:                validate_upgrade
+    System Snapshot Tag:  so_system_20201228135002UTC
+    To Version:           4.2.2
+
+
+

Each upgrade begins with taking a snapshot of system and system_schema keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under System Snapshot Tag.

+

Before nodes in rack are upgraded, underlying StatefulSet is changed to use OnDelete UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed.

+

When a node is being upgraded, maintenance mode is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under Data Snapshot Tag and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node.

+

Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version.

+

Current state of upgrade can be traced using Current Node, Current Rack and State status fields.

+
    +
  • Current Node shows which node is being upgraded.

  • +
  • Current Rack displays which rack is being upgraded.

  • +
  • State contain information at which stage upgrade is.

  • +
+

State can have following values:

+
    +
  • begin_upgrade - upgrade is starting

  • +
  • check_schema_agreement - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried.

  • +
  • create_system_backup - system keyspaces snapshot is being taken

  • +
  • find_next_rack - Operator finds out which rack must be upgraded next, decision is saved in Current Rack

  • +
  • upgrade_image_in_pod_spec - Image and UpgradeStrategy is upgraded in underlying StatefulSet

  • +
  • find_next_node - Operator finds out which node must be upgraded next, decision is saved in Current Node

  • +
  • enable_maintenance_mode - maintenance mode is being enabled

  • +
  • drain_node - node is being drained

  • +
  • backup_data - snapshot of data keyspaces is being taken

  • +
  • disable_maintenance_mode - maintenance mode is being disabled

  • +
  • delete_pod - Scylla Pod is being deleted

  • +
  • validate_upgrade - Operator validates if new pod enters Ready state and if Scylla version is upgraded

  • +
  • clear_data_backup - snapshot of data keyspaces is being removed

  • +
  • clear_system_backup - snapshot of system keyspaces is being removed

  • +
  • restore_upgrade_strategy - restore UpgradeStrategy in underlying StatefulSet

  • +
  • finish_upgrade - upgrade cleanup

  • +
+

Recovering from upgrade failure

+

Upgrade may get stuck on validate_upgrade stage. This happens when Scylla Pod refuses to properly boot up.

+

To continue with upgrade, first turn off operator by scaling Operator replicas to zero:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0
+
+
+

Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names.

+

Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2
+
+
+

Operator should continue upgrade process from where it left off.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/objects.inv b/v1.10/objects.inv new file mode 100644 index 00000000000..acd8f3649f3 --- /dev/null +++ b/v1.10/objects.inv @@ -0,0 +1,6 @@ +# Sphinx inventory version 2 +# Project: Scylla Operator +# Version: +# The remainder of this file is compressed using zlib. +xڅTMo +UoUonV4Dųe,>/,c1AhrxQj-?NI8NëIy@Ý6 {[ +mqI OABӉ}!th uhPG5$Z#~%kz\q?#kQ; Cˍl,kE^!9:M'FUgDž%tN0ʼn7hJFv*ʄ={Uט&?hlP7eUA>K4uU/Dtz/̽*E%$rC)Ql`$8`k\`| ExkjG`?Hmݺwu22Qnw8 TlBD +/^%W%hS߆kݗ#&~5Z%̜֊vLV!ݚIU=|WmhUZI\9OO`7׆0Z. lI;$V%'##ȍh&,S9l Sqrn_ \ No newline at end of file diff --git a/v1.10/performance.html b/v1.10/performance.html new file mode 100644 index 00000000000..d63dae40a37 --- /dev/null +++ b/v1.10/performance.html @@ -0,0 +1,660 @@ + + + + + + + + + + + + + Performance tuning | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+ +
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+

Performance tuning

+

Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes.

+
+

Node tuning

+

Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning.

+

Below example NodeConfig tunes nodes having scylla.scylladb.com/node-type=scylla label:

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: NodeConfig
+metadata:
+ name: cluster
+spec:
+ placement:
+   nodeSelector:
+     scylla.scylladb.com/node-type: scylla
+
+
+

For more details about new CRD use:

+
kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1
+
+
+

For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more.

+

Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node.

+

Scylla works most efficently when it’s pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares.

+

On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others.
We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively.

+

Tuning resources are created in a special namespace called scylla-operator-node-tuning.

+

The tuning is applied only to pods with Guaranteed QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions.

+
+
+

Kubernetes tuning

+

By default, the kubelet uses the CFS quota to enforce pod CPU limits.
When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static.

+

Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider.

+

Only pods within the Guaranteed QoS class) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won’t be part of the shared pool.

+

In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class:

+
    +
  • resource request and limits must be equal or only limits have to be provided

  • +
  • agentResources must be provided and their requests and limits must be equal, or only limits have to be provided

  • +
+

An example of such a ScyllaCluster that receives a Guaranteed QoS class is below:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: guaranteed-cluster
+  namespace: scylla
+spec:
+  version: 4.5.1
+  agentVersion: 2.5.2
+  datacenter:
+    name: us-east-1
+    racks:
+    - name: us-east-1a
+      members: 3
+      storage:
+        capacity: 500Gi
+      agentResources:
+        requests:
+          cpu: 1
+          memory: 1G
+        limits:
+          cpu: 1
+          memory: 1G
+      resources:
+        requests:
+          cpu: 4
+          memory: 16G
+        limits:
+          cpu: 4
+          memory: 16G
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.10/releases.html b/v1.10/releases.html new file mode 100644 index 00000000000..da1e5980e8d --- /dev/null +++ b/v1.10/releases.html @@ -0,0 +1,827 @@ + + + + + + + + + + + + + Releases | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ Menu +
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Releases

+
+

Schedule

+

We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates.

+ + + + + + + + + + + + + + + +
ReleaseCode freezeGeneral availability
1.102022-08-082021-08-15
+
+

Supported releases

+

We support the latest 2 releases of the operator to give everyone time to upgrade.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
ReleaseGeneral availabilitySupport ends
1.92023-07-04Release of 1.11
1.82023-01-25Release of 1.10
1.72022-01-272023-07-04
1.62021-12-032023-01-25
1.52021-09-162022-01-27
1.42021-08-102021-12-03
1.32021-06-172021-09-16
1.22021-05-062021-08-10
1.12021-03-222021-06-17
1.02021-01-212021-05-06
+

Backport policy

+

Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers.

+
+
+
+

CI/CD

+

We use GitHub actions for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite.

+
+

Automated promotions

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Git referenceTypeContainer image
masterbranchdocker.io/scylladb/scylla-operator:latest
vX.Ybranchdocker.io/scylladb/scylla-operator:X.Y
vX.Y.Ztagdocker.io/scylladb/scylla-operator:X.Y.Z
vX.Y.Z-alpha.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-alpha.N
vX.Y.Z-beta.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-beta.N
vX.Y.Z-rc.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-rc.N
+
+

Generally available

+

GA images aren’t build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate.

+
+
+
+

Support matrix

+

Support matrix table shows the version requirements for a particular scylla-operator version. Be sure to match these requirements, otherwise some functionality will not work.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
v1.9v1.8v1.7v1.6v1.5v1.4v1.3v1.2v1.1v1.0
Kubernetes>=1.21>=1.21>=1.20 && <1.25>=1.19.10 && <1.25>=1.19.10>=1.19.10>=1.19>=1.19>=1.11>=1.11
CRI APIv1v1alpha2v1alpha2v1alpha2
Scylla OS>=5.0>=5.0>=4.3>=4.3>=4.3>=4.3>=4.2>=4.2>=4.0>=4.0
Scylla Enterprise>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2020.1>=2020.1>=2020.1>=2020.1
Scylla Manager>=2.6>=2.6>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2
Scylla Monitoring>=4.0>=4.0>=3.0>=3.0>=1.0>=1.0>=1.0>=1.0>=1.0>=1.0
+
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+ + + + + + + \ No newline at end of file diff --git a/v1.10/scylla-cluster-crd.html b/v1.10/scylla-cluster-crd.html new file mode 100644 index 00000000000..5de46d9e4f7 --- /dev/null +++ b/v1.10/scylla-cluster-crd.html @@ -0,0 +1,799 @@ + + + + + + + + + + + + + Scylla Cluster CRD | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+ +
+ +
+

Scylla Cluster CRD

+

Scylla database clusters can be created and configured using the clusters.scylla.scylladb.com custom resource definition (CRD).

+

Please refer to the the user guide walk-through for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD.

+
+

Sample

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: simple-cluster
+  namespace: scylla
+spec:
+  version: 2.3.1
+  repository: scylladb/scylla
+  developerMode: true
+  cpuset: false
+  automaticOrphanedNodeCleanup: true
+  repairs:
+  - name: "weekly us-east-1 repair"
+    intensity: "2"
+    interval: "7d"
+    dc: ["us-east-1"]
+  backups:
+  - name: "daily users backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "1d"
+    keyspace: ["users"]
+  - name: "weekly full cluster backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "7d"
+  datacenter:
+    name: us-east-1
+    racks:
+      - name: us-east-1a
+        members: 3
+        storage:
+          capacity: 500G
+          storageClassName: local-raid-disks
+        resources:
+          requests:
+            cpu: 8
+            memory: 32Gi
+          limits:
+            cpu: 8
+            memory: 32Gi
+        placement:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: failure-domain.beta.kubernetes.io/region
+                    operator: In
+                    values:
+                      - us-east-1
+                  - key: failure-domain.beta.kubernetes.io/zone
+                    operator: In
+                    values:
+                      - us-east-1a
+          tolerations:
+            - key: role
+              operator: Equal
+              value: scylla-clusters
+              effect: NoSchedule
+
+
+
+
+

Settings Explanation

+
+

Cluster Settings

+
    +
  • version: The version of Scylla to use. It is used as the image tag to pull.

  • +
  • agentVersion: The version of Scylla Manager Agent to use. It is used as the image tag to pull.

  • +
  • repository: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • agentRepository: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • developerMode: Optional field. If it’s true, then Scylla is started in developer mode. This setting is for shared test/dev environments.

  • +
  • cpuset: Optional field. If it’s true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the static cpu policy and only specify limits in resources.

  • +
  • automaticOrphanedNodeCleanup: Optional field. Controls if automatic orphan node cleanup should be performed.

  • +
  • alternator: Optional field. Defines Alternator configuration.

    +
      +
    • port: Port on which to bind to Alternator API.

    • +
    • writeIsolation: required Desired write isolation.

    • +
    +
  • +
  • genericUpgrade: Optional field. Defines GenericUpgrade configuration.

    +
      +
    • failureStrategy: specifies which logic is executed when upgrade failure happens. Currently only Retry is supported.

    • +
    • pollInterval: specifies how often upgrade logic polls on state updates. +Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect +overall time spent during upgrade.

    • +
    +
  • +
  • datacenter: Datacenter definition.

  • +
  • sysctls: Optional field. Sysctl properties to be applied during initialization.

  • +
  • scyllaArgs: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it.

  • +
  • network: Optional field. Allows to customize network parameters.

    +
      +
    • hostNetworking: controls if host networking should be enabled.

    • +
    • dnsPolicy: controls Scylla Pod DNS Policy. See details.

    • +
    +
  • +
  • repairs: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
  • backups: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
+

In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups.

+
+
+

Scylla Manager settings

+

Tasks are scheduled only when Scylla Manager is deployed in K8s cluster.

+

Repairs:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. Task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. The number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1", "!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • failFast - Optional field. Stop repair on first error.

  • +
  • intensity - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. +If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). +Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. +Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. +For Scylla clusters that do not support row-level repair, intensity can be a decimal between (0,1). +In that case it specifies percent of shards that can be repaired in parallel on a repair master node. +For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. +Intensity is a number passed as string due to lack of support for float values in k8s controller runtime

  • +
  • parallel - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). +Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. +The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. +The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace", "!keyspace.table_prefix_*"] +used to include or exclude keyspaces from repair.

  • +
  • smallTableThreshold - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units [B, MiB, GiB, TiB] (default "1GiB").

  • +
+

Backups:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - Optional field. Specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. the number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1","!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace","!keyspace.table_prefix_*"] used to include or exclude keyspaces from backup.

  • +
  • location - Optional field. A list of backup locations in the format [<dc>:]<provider>:<name> ex. s3:my-bucket. +The <dc>: part is optional and is only needed when different datacenters are being used to upload data to different locations. +<name> Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are s3 and gcs.

  • +
  • rateLimit - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format [<dc>:]<limit>. +The <dc>: part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100).

  • +
  • retention - Optional field. The number of backups which are to be stored (default 3).

  • +
  • snapshotParallel - Optional field. A list of snapshot parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set, the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
  • uploadParallel - Optional field. A list of upload parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
+
+
+

Datacenter Settings

+
    +
  • name: Name of the datacenter. Usually, a datacenter corresponds to a region.

  • +
  • racks: List of racks for the specific datacenter.

  • +
+
+
+

Rack Settings

+
    +
  • name: Name of the rack. Usually, a rack corresponds to an availability zone.

  • +
  • members: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don’t call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node).

  • +
  • storage: Defines the specs of the underlying storage.

    +
      +
    • capacity: Capacity of the PersistentVolume to request.

    • +
    • storageClassName: Optional field. StorageClass of PersistentVolume to request.

    • +
    +
  • +
  • resources: Defines the CPU and RAM resources for the Scylla Pods.

    +
      +
    • requests: The minimum amount of resources needed to run a Scylla container.

      +
        +
      • cpu: CPU requests.

      • +
      • memory: RAM requests.

      • +
      +
    • +
    • limits: The maximum amount of resources that can be used by a Scylla container.

      +
        +
      • cpu: CPU limits.

      • +
      • memory: RAM limits.

      • +
      +
    • +
    +
  • +
  • agentResources: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See resources for details.

  • +
  • volumes: Optional field. Defines volumes available in Scylla Pod. See details.

  • +
  • volumeMounts: Optional field. Defines which volumes will be attached to Scylla container.

  • +
  • agentVolumeMounts: Optional field. Defines which volumes will be attached to Agent container.

  • +
  • scyllaConfig: Optional field. name of custom config map which will be merged with Scylla config.

  • +
  • scyllaAgentConfig: Optional field. name of custom secret which will be merged with Scylla Manager Agent config.

  • +
  • placement: Optional field. Defines the placement of Scylla Pods. Has the following subfields:

    + +
  • +
+
+
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\ No newline at end of file diff --git a/v1.10/sitemap.xml b/v1.10/sitemap.xml new file mode 100644 index 00000000000..d3d0ce43236 --- /dev/null +++ b/v1.10/sitemap.xml @@ -0,0 +1,2 @@ + +https://operator.docs.scylladb.com/stable/contributing.htmlhttps://operator.docs.scylladb.com/stable/eks.htmlhttps://operator.docs.scylladb.com/stable/generic.htmlhttps://operator.docs.scylladb.com/stable/gke.htmlhttps://operator.docs.scylladb.com/stable/helm.htmlhttps://operator.docs.scylladb.com/stable/index.htmlhttps://operator.docs.scylladb.com/stable/known-issues.htmlhttps://operator.docs.scylladb.com/stable/manager.htmlhttps://operator.docs.scylladb.com/stable/migration.htmlhttps://operator.docs.scylladb.com/stable/monitoring.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/automatic-cleanup.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/index.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/maintenance-mode.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/replace-node.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/restore.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/scylla-upgrade.htmlhttps://operator.docs.scylladb.com/stable/performance.htmlhttps://operator.docs.scylladb.com/stable/releases.htmlhttps://operator.docs.scylladb.com/stable/scylla-cluster-crd.htmlhttps://operator.docs.scylladb.com/stable/upgrade.htmlhttps://operator.docs.scylladb.com/stable/genindex.htmlhttps://operator.docs.scylladb.com/stable/404.htmlhttps://operator.docs.scylladb.com/stable/search.html \ No newline at end of file diff --git a/v1.10/upgrade.html b/v1.10/upgrade.html new file mode 100644 index 00000000000..b1a94f92844 --- /dev/null +++ b/v1.10/upgrade.html @@ -0,0 +1,786 @@ + + + + + + + + + + + + + Upgrade of Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + + + +
+ +
+ +
+

Upgrade of Scylla Operator

+

This page describes Scylla Operator upgrade procedures.
There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps.

+
+

Upgrade via Helm

+

Helm doesn’t support managing CustomResourceDefinition resources (#5871, #7735)
These are only created on first install and never updated. In order to update them, users have to do it manually.

+

Replace <release_name> with the name of your Helm release for Scylla Operator and replace <version> with the version number you want to install:

+
    +
  1. Make sure Helm chart repository is up-to-date:

    +
    helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable
    +helm repo update
    +
    +
    +
  2. +
  3. Update CRD resources. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    tmpdir=$( mktemp -d ) \
    +  && helm pull scylla-operator/scylla-operator --version <version> --untar --untardir "${tmpdir}" \
    +  && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \
    +  | xargs kubectl apply
    +
    +
    +
  4. +
  5. Update Scylla Operator

    +
    helm upgrade --version <version> <release_name> scylla-operator/scylla-operator
    +
    +
    +
  6. +
+
+
+

Upgrade via kubectl

+

Replace <version> with the version number you want to install:

+
    +
  1. Checkout source code of version you want to use:

    +
    git checkout <version>
    +
    +
    +
  2. +
  3. Manifests use rolling minor version tag, you may want to pin it to specific version:

    +
    find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:<version>^g"
    +
    +
    +
  4. +
  5. Update Scylla Operator. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    kubectl apply -f deploy/operator
    +
    +
    +
  6. +
+
+
+
+

v1.2.0 -> v1.3.0

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.3.0:

    +
    git checkout v1.3.0
    +
    +
    +
  2. +
  3. Update Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  4. +
  5. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  6. +
+
+
+

v1.1.0 -> v1.2.0

+

1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones.

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.2.0:

    +
    git checkout v1.2.0
    +
    +
    +
  2. +
  3. Remove old scylla operator namespace - in our case it’s called scylla-operator-system:

    +
    kubectl delete namespace scylla-operator-system --wait=true
    +
    +
    +
  4. +
  5. Remove old webhooks:

    +
    kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration
    +kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration
    +
    +
    +
  6. +
  7. Install Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  8. +
  9. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  10. +
+
+
+

v1.0.0 -> v1.1.0

+

During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected.

+
    +
  1. Get name of StatefulSet managing Scylla Operator

    +
    kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager"
    +
    +NAME                                 READY   AGE
    +scylla-operator-controller-manager   1/1     95m
    +
    +
    +
  2. +
  3. Change probes and used container image by applying following patch:

    +
    spec:
    +  template:
    +    spec:
    +      containers:
    +      - name: manager
    +        image: docker.io/scylladb/scylla-operator:1.1.0
    +        livenessProbe:
    +          httpGet:
    +            path: /healthz
    +            port: 8080
    +            scheme: HTTP
    +        readinessProbe:
    +          $retainKeys:
    +          - httpGet
    +          httpGet:
    +            path: /readyz
    +            port: 8080
    +            scheme: HTTP
    +
    +
    +

    To apply above patch save it to file (operator-patch.yaml for example) and apply to Operator StatefulSet:

    +
    kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)"
    +
    +
    +
  4. +
+
+
+

v0.3.0 -> v1.0.0

+

Note: There’s an experimental migration procedure available here.

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common +kind which is easier to disambiguate. (ScyllaCluster). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide.

+
    +
  1. Get list of existing Scylla clusters

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +
  2. +
  3. Delete each one of them

    +
    kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster
    +
    +
    +
  4. +
  5. Make sure you’re on v0.3.0 branch

    +
    git checkout v0.3.0
    +
    +
    +
  6. +
  7. Delete existing CRD and Operator

    +
    kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  8. +
  9. Checkout v1.0.0 version

    +
    git checkout v1.0.0
    +
    +
    +
  10. +
  11. Install new CRD and Scylla Operator

    +
    kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  12. +
  13. Migrate your existing Scylla Cluster definition. Change apiVersion and kind from:

    +
    apiVersion: scylla.scylladb.com/v1alpha1
    +kind: Cluster
    +
    +
    +

    to:

    +
    apiVersion: scylla.scylladb.com/v1
    +kind: ScyllaCluster
    +
    +
    +
  14. +
  15. Once your cluster definition is ready, use kubectl apply to install fresh Scylla cluster.

  16. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/.buildinfo b/v1.11/.buildinfo new file mode 100644 index 00000000000..bcc3a753728 --- /dev/null +++ b/v1.11/.buildinfo @@ -0,0 +1,4 @@ +# Sphinx build info version 1 +# This file hashes the configuration used when building these files. When it is not found, a full rebuild will be done. +config: be89a8e68e1f0e98b8e10b1bc1213712 +tags: 645f666f9bcd5a90fca523b33c5a78b7 diff --git a/v1.11/.doctrees/contributing.doctree b/v1.11/.doctrees/contributing.doctree new file mode 100644 index 00000000000..4f8655c4905 Binary files /dev/null and b/v1.11/.doctrees/contributing.doctree differ diff --git a/v1.11/.doctrees/eks.doctree b/v1.11/.doctrees/eks.doctree new file mode 100644 index 00000000000..604f588bce7 Binary files /dev/null and b/v1.11/.doctrees/eks.doctree differ diff --git a/v1.11/.doctrees/environment.pickle b/v1.11/.doctrees/environment.pickle new file mode 100644 index 00000000000..3ffc53dfcd6 Binary files /dev/null and b/v1.11/.doctrees/environment.pickle differ diff --git a/v1.11/.doctrees/exposing.doctree b/v1.11/.doctrees/exposing.doctree new file mode 100644 index 00000000000..ab61d92a5f9 Binary files /dev/null and b/v1.11/.doctrees/exposing.doctree differ diff --git a/v1.11/.doctrees/generic.doctree 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+

404

+

The ScyllaDB monster ate your page!

+

+ Home +

+
+ + + \ No newline at end of file diff --git a/v1.11/CNAME b/v1.11/CNAME new file mode 100644 index 00000000000..12aae904168 --- /dev/null +++ b/v1.11/CNAME @@ -0,0 +1 @@ +operator.docs.scylladb.com \ No newline at end of file diff --git a/v1.11/_images/clusterip.svg b/v1.11/_images/clusterip.svg new file mode 100644 index 00000000000..1c74e5e69ba --- /dev/null +++ b/v1.11/_images/clusterip.svg @@ -0,0 +1,3 @@ + + +
Service
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10.0.0.1
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10.0.0.2
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10.0.0.3
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Kubernetes cluster
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Virtual Machine
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Virtu...
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PodIP: 10.0.0.3
PodIP: 10.0.0...
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PodIP: 20.0.0.1
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Service
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10.0.0.1
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PodIP: 20.0.0.1
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\ No newline at end of file diff --git a/v1.11/_sources/contributing.md.txt b/v1.11/_sources/contributing.md.txt new file mode 100644 index 00000000000..da5fc078732 --- /dev/null +++ b/v1.11/_sources/contributing.md.txt @@ -0,0 +1,155 @@ +# Contributing to Scylla Operator + +## Prerequisites + +To develop on scylla-operator, your environment must have the following: + +1. [Go 1.13](https://golang.org/dl/) + * Make sure [GOPATH](https://github.com/golang/go/wiki/SettingGOPATH) is set to `GOPATH=$HOME/go`. +2. [Kustomize v3.1.0](https://github.com/kubernetes-sigs/kustomize/releases/tag/v3.1.0) +3. [kubebuilder v2.3.1](https://github.com/kubernetes-sigs/kubebuilder/releases/tag/v2.3.1) +4. [Docker](https://docs.docker.com/install/) +5. Git client installed +6. Github account + +To install all dependencies (Go, kustomize, kubebuilder, dep), simply run: +```bash +./install-dependencies.sh +``` + +## Initial Setup + +### Create a Fork + +From your browser navigate to [http://github.com/scylladb/scylla-operator](http://github.com/scylladb/scylla-operator) and click the "Fork" button. + +### Clone Your Fork + +Open a console window and do the following: + +```bash +# Create the scylla operator repo path +mkdir -p $GOPATH/src/github.com/scylladb + +# Navigate to the local repo path and clone your fork +cd $GOPATH/src/github.com/scylladb + +# Clone your fork, where is your GitHub account name +git clone https://github.com//scylla-operator.git +``` + +### Add Upstream Remote + +First you will need to add the upstream remote to your local git: +```bash +# Add 'upstream' to the list of remotes +git remote add upstream https://github.com/scylladb/scylla-operator.git + +# Verify the remote was added +git remote -v +``` +Now you should have at least `origin` and `upstream` remotes. You can also add other remotes to collaborate with other contributors. + +## Development + +To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch. + +### Building the project + +You can build the project using the Makefile commands: +* Open the Makefile and change the `IMG` environment variable to a repository you have access to. +* Run `make docker-push` and wait for the image to be built and uploaded in your repo. + +### Create a Branch + +From a console, create a new branch based on your fork and start working on it: + +```bash +# Ensure all your remotes are up to date with the latest +git fetch --all + +# Create a new branch that is based off upstream master. Give it a simple, but descriptive name. +# Generally it will be two to three words separated by dashes and without numbers. +git checkout -b feature-name upstream/master +``` + +Now you are ready to make the changes and commit to your branch. + +### Updating Your Fork + +During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to `rebase` your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean. + +Whenever you need to update your local repository, you never want to merge. You **always** will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (`git stash save -u ""`). + +```bash +git fetch --all +git rebase upstream/master +``` + +Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the [Git documentation](https://git-scm.com/docs/git-rebase), it will be well worth it. In a nutshell, rebasing does the following: +- "Unwinds" your local commits. Your local commits are removed temporarily from the history. +- The latest changes from upstream are added to the history +- Your local commits are re-applied one by one +- If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase. +- When done rebasing, you will see all of your commits in the history. + +## Submitting a Pull Request + +Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream. + +In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged. + +### Commit History + +To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits. + +```bash +# Inspect your commit history to determine if you need to squash commits +git log + +# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean. +# In this example, the last 5 commits will be opened in the git rebase tool. +git rebase -i HEAD~5 +``` + +Once your commit history is clean, ensure you have based on the [latest upstream](#updating-your-fork) before you open the PR. + +### Commit messages + +Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good! + +If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed. + +Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you've forgotten everything about what you just did, and you need to get up to speed quickly. + +If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don't want to close the associated issue just put #1234 and the change will get linked into the issue. + +Here is an example of a short commit message: + +``` +sidecar: log on reconcile loop - fixes #1234 +``` + +And here is an example of a longer one: +``` + +api: now supports host networking (#1234) + +The operator CRD now has a "network" property that can be used to +select host networking as well as setting the apropriate DNS policy. + +Fixes #1234 +``` + +### Submitting + +Go to the [Scylla Operator github](https://www.github.com/scylladb/scylla-operator) to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR. + +After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically. diff --git a/v1.11/_sources/eks.md.txt b/v1.11/_sources/eks.md.txt new file mode 100644 index 00000000000..ecfe0f0d1bb --- /dev/null +++ b/v1.11/_sources/eks.md.txt @@ -0,0 +1,125 @@ +# Deploying Scylla on EKS + +This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won't work with different machine tiers. +It sets up the kubelets on EKS nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c + +# From inside the examples/eks folder +cd examples/eks +./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION" +``` + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### EKS Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c +CLUSTER_NAME=scylla-demo +``` + +#### Creating an EKS cluster + +For this guide, we'll create an EKS cluster with the following: + +* A NodeGroup of 3 `i3-2xlarge` Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having `scylla-clusters` toleration. + +``` + - name: scylla-pool + instanceType: i3.2xlarge + desiredCapacity: 3 + labels: + scylla.scylladb.com/node-type: scylla + taints: + role: "scylla-clusters:NoSchedule" + ssh: + allow: true + kubeletExtraConfig: + cpuManagerPolicy: static +``` + +* A NodeGroup of 4 `c4.2xlarge` Nodes to deploy `cassandra-stress` later on. These nodes will only accept pods having `cassandra-stress` toleration. + +``` + - name: cassandra-stress-pool + instanceType: c4.2xlarge + desiredCapacity: 4 + labels: + pool: "cassandra-stress-pool" + taints: + role: "cassandra-stress:NoSchedule" + ssh: + allow: true +``` + +* A NodeGroup of 1 `i3.large` Node, where the monitoring stack and operator will be deployed. +``` + - name: monitoring-pool + instanceType: i3.large + desiredCapacity: 1 + labels: + pool: "monitoring-pool" + ssh: + allow: true +``` + +### Prerequisites + +#### Installing script third party dependencies + +Script requires several dependencies: +- eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html +- kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/ + +#### Setting up nodes for ScyllaDB + +ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you'll first need to form a RAID array from those disks. +`NodeConfig` performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in [Performance tuning](performance.md) section of ScyllaDB Operator's documentation. + +Deploy `NodeConfig` to let it take care of the above operations: +``` +kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml +``` + +#### Deploying Local Volume Provisioner + +Afterwards, deploy ScyllaDB's [Local Volume Provisioner](https://github.com/scylladb/k8s-local-volume-provisioner), capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays. +``` +kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/ +kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml +``` + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting an EKS cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +eksctl delete cluster "${CLUSTER_NAME}" +``` diff --git a/v1.11/_sources/exposing.md.txt b/v1.11/_sources/exposing.md.txt new file mode 100644 index 00000000000..c9136e3bdfd --- /dev/null +++ b/v1.11/_sources/exposing.md.txt @@ -0,0 +1,266 @@ +# Exposing ScyllaCluster + +This document explains how ScyllaDB Operator exposes ScyllaClusters in different network setups. +A ScyllaCluster can be exposed in various network configurations, independently to clients and nodes. + +``` note:: +ScyllaClusters can be only exposed when the ScyllaDB version used version is `>=2023.1` ScyllaDB Enterprise or `>=5.2` ScyllaDB Open Source. +``` + +## Expose Options + +`exposeOptions` specifies configuration options for exposing ScyllaCluster's. +A ScyllaCluster created without any `exposeOptions` is equivalent to the following: + +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: ClusterIP + broadcastOptions: + clients: + type: ServiceClusterIP + nodes: + type: ServiceClusterIP +``` + +The following sections cover what every field controls and what the configuration options are. + +### Node Service Template + +`nodeService` serves as a template for a node-dedicated Service managed by the Scylla Operator for each node within a ScyllaCluster. +The properties of the Services depend on the selected type. +Additionally, there's an option to define custom annotations, incorporated into each node's Service, +which might be useful for further tweaking the Service properties or related objects. + +#### Headless Type + +For `Headless` type, Scylla Operator creates a Headless Service with a selector pointing to the particular node in the ScyllaCluster. +Such Service doesn't provide any additional IP addresses, and the internal DNS record resolves to the PodIP of a node. + +This type of Service is useful when ScyllaCluster nodes broadcast PodIPs to clients and other nodes. + +Example: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: Headless +``` + +#### ClusterIP Type + +For `ClusterIP` type, Scylla Operator creates a ClusterIP Service backed by a specific node in the ScyllaCluster. + +These IP addresses are only routable within the same Kubernetes cluster, so it's a good fit, if you don't want to expose them to other networks. + +Example: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: ClusterIP +``` + +#### LoadBalancer Type + +For the `LoadBalancer` type, Scylla Operator generates a LoadBalancer Service that directs traffic to a specific node within the ScyllaCluster. +On platforms with support for external load balancers, this Service provisions one. +The accessibility of this load balancer's address depends on the platform and any customizations made; in some cases it may be reachable from the internal network or public Internet. + +LoadBalancer Service is a superset of ClusterIP Service, implying that each LoadBalancer Service also contains an allocated ClusterIP. +They can be configured using the following fields, which propagate to every node Service: +* externalTrafficPolicy +* internalTrafficPolicy +* loadBalancerClass +* allocateLoadBalancerNodePorts + +Check [Kubernetes Service documentation](https://kubernetes.io/docs/concepts/services-networking/service) to learn more about these options. + +Example: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: LoadBalancer + loadBalancerClass: my-custom-load-balancer-class +``` + +--- + +### Broadcast Options + +Broadcast options control what is the source of the address being broadcasted to clients and nodes. +It's configured independently for clients and nodes because you may want to expose these two types of traffic on different networks. +Using different networks can help manage costs, reliability, latency, security policies or other metrics you care about. + +#### PodIP Type + +Address broadcasted to clients/nodes is taken from Pod. +By default, the address is taken from Pod's `status.PodIP` field. +Because a Pod can use multiple address, you may want to provide source options by specifying `podIP.source`. + +Example: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + broadcastOptions: + clients: + type: PodIP + podIP: + source: Status +``` + +#### ServiceClusterIP Type + +Address broadcasted to clients or nodes is taken from `spec.ClusterIP` field of a node's dedicated Service. + +In order to configure it, the `nodeService` template must specify a Service having a ClusterIP assigned. + +Example: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + broadcastOptions: + clients: + type: ServiceClusterIP +``` + +#### ServiceLoadBalancerIngress Type + +Address broadcasted to clients/nodes is taken from the node dedicated Service, from `status.ingress[0].ipAddress` or `status.ingress[0].hostname` field. + +In order to configure it, the `nodeService` template must specify the LoadBalancer Service. + +Example: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + broadcastOptions: + clients: + type: ServiceLoadBalancerIngress + podIP: + source: Status +``` + +## Deployment Examples + +The following section contains several specific examples of various network scenarios and explains how nodes and clients communicate with one another. +### In-cluster only + +ScyllaCluster definition: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: ClusterIP + broadcastOptions: + clients: + type: ServiceClusterIP + nodes: + type: ServiceClusterIP +``` + +Both client and nodes are deployed within the same Kubernetes cluster. +They talk through ClusterIP addresses taken from the Service. +Because ClusterIP Services are only routable within the same Kubernetes cluster, this cluster won't be reachable from outside. + +![ClusterIPs](static/exposing/clusterip.svg) + +### In-cluster node-to-node, VPC clients-to-nodes + +ScyllaCluster definition: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: ClusterIP + broadcastOptions: + clients: + type: PodIP + nodes: + type: ServiceClusterIP +``` + +In this scenario, we assume that the Pod IP subnet is routable within a VPC. +Clients within the VPC network can communicate directly with ScyllaCluster nodes using PodIPs. +Nodes communicate with each other exclusively within the same Kubernetes cluster. + +![PodIPs](static/exposing/podips.svg) + +### Multi VPC + +ScyllaCluster definition: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: Headless + broadcastOptions: + clients: + type: PodIP + nodes: + type: PodIP +``` + +In this scenario, we set up two separate Kubernetes clusters in distinct VPCs. +These VPCs are interconnected to facilitate inter-VPC connectivity. +We operate on the assumption that the Pod IP subnet is routable within each VPC. + +Both ScyllaClusters use the same `exposeOptions`, nodes broadcast their Pod IP addresses, enabling them to establish connections with one another. +****Check other documentation pages to know how to connect two ScyllaClusters into one logical cluster. + +Clients, whether deployed within the same Kubernetes cluster or within a VPC, have the capability to reach nodes using their Pod IPs. +Since there is no requirement for any address other than the Pod IP, the `Headless` service type is sufficient. + +![MultiVPC](static/exposing/multivpc.svg) + +### Internet + +ScyllaCluster definition: +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +spec: + exposeOptions: + nodeService: + type: LoadBalancer + broadcastOptions: + clients: + type: ServiceLoadBalancerIngress + nodes: + type: ClusterIP +``` + +We assume that a Kubernetes cluster has been deployed in a cloud provider environment that supports external load balancers. +By specifying the LoadBalancer type in the nodeService template, the Scylla Operator generates a dedicated LB Service for each node. +The cloud provider then establishes an external load balancer with an internet-accessible address. +ScyllaDB nodes broadcast this external address to clients, enabling drivers to connect and discover other nodes. +Since all ScyllaDB nodes reside within the same Kubernetes cluster, there is no need to route traffic through the internet. +Consequently, the nodes are configured to communicate via ClusterIP, which is also accessible within LoadBalancer Services. + +![Internet](static/exposing/loadbalancer.svg) + +--- + +Other more complex scenarios can be built upon these simple ones. diff --git a/v1.11/_sources/generic.md.txt b/v1.11/_sources/generic.md.txt new file mode 100644 index 00000000000..42380466a93 --- /dev/null +++ b/v1.11/_sources/generic.md.txt @@ -0,0 +1,387 @@ +# Deploying Scylla on a Kubernetes Cluster + +This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment: + +* [GKE](gke.md) + +## Prerequisites + +* A Kubernetes cluster +* A [Storage Class](https://kubernetes.io/docs/concepts/storage/storage-classes/) to provision [PersistentVolumes](https://kubernetes.io/docs/concepts/storage/persistent-volumes/). +* Helm 3 installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) if you need to install it. + Make sure that you enable the [stable repository](https://github.com/helm/charts#how-do-i-enable-the-stable-repository-for-helm-3) + +## Running locally + +Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and [Minikube](https://minikube.sigs.k8s.io/docs/) makes it a breeze. + +We need to give minikube a little bit more resources than default so start minikube like this: +```console +minikube start --cpus=6 +``` + +Then make kubectl aware of this local installation like this: +```console +eval $(minikube docker-env) +``` + +## Download Scylla Operator +In this guide you will be using the examples and manifests from [Scylla Operator repository](https://github.com/scylladb/scylla-operator), so start off by cloning it to your local machine. +```console +git clone git@github.com:scylladb/scylla-operator.git +cd scylla-operator +``` + +## Deploy Cert Manager +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` +This will install Cert Manager to provision a self-signed certificate. + +Once it's deployed, wait until Cert Manager is ready: + +```console +kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io +kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook +``` + +## Deploy Scylla Operator + +Deploy the Scylla Operator using the following commands: + +```console +kubectl apply -f examples/common/operator.yaml +``` + +This will install the operator in namespace `scylla-operator`. +Wait until it's ready: + +```console +kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator +``` + +If you want to check the logs of the operator you can do so with: + + ```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +## Create and Initialize a Scylla Cluster + +Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the `clusters.scylla.scylladb.com` resource. +Some of that resource's values are configurable, so feel free to browse `cluster.yaml` and tweak the settings to your liking. +Full details for all the configuration options can be found in the [Scylla Cluster CRD documentation](scylla-cluster-crd.md). + +When you are ready to create a Scylla cluster, simply run: + +```console +kubectl create -f examples/generic/cluster.yaml +``` + +We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment. + +```console +kubectl -n scylla get ScyllaCluster +``` + +Checking the pods that are created is as easy as: + +```console +kubectl -n scylla get pods +``` + +The output should be something like: + +```console +NAME READY STATUS RESTARTS AGE +simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 9m49s +simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 7m43s +simple-cluster-us-east-1-us-east-1a-2 2/2 Running 0 6m46s +``` + +It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: `CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER` as specified in `cluster.yaml`. + +In the above example we have the following properties: + + - CLUSTER_NAME: `simple-cluster` + - DATACENTER_NAME: `us-east-1` + - RACK_NAME: `us-east-1a` + - INSTANCE_NUMBER: An automatically generated number attached to the pod name. + +We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want. + +To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in `cluster.yaml`: + +```console +kubectl -n scylla get pod -l app=scylla +``` + +You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run: + +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +Checking the logs of the running scylla instances can be done like this: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla +``` + +### Configure host networking + +To squeeze the most out of your deployment it is sometimes necessary to employ [host networking](https://kubernetes.io/docs/concepts/services-networking/). +To enable this the CRD allows for specifying a `network` parameter as such: + +```yaml +version: 4.0.0 + agentVersion: 2.0.2 + cpuset: true + network: + hostNetworking: true +``` + +This will result in hosts network to be used for the Scylla Stateful Set deployment. + +### Configure container kernel parameters + +Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property `sysctls` that is a list of the desired key-value pairs to set. + +___For example___: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls to`fs.aio-max-nr=N`. + +```yaml +spec: + sysctls: + - "fs.aio-max-nr=2097152" +``` + +### Deploying Alternator + +The operator is also capable of deploying [Alternator](https://www.scylladb.com/alternator/) instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the `cluster.yaml` file from this: +```yaml +spec: + version: 4.0.0 + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +to this: +```yaml +spec: + version: 4.0.0 + alternator: + port: 8000 + writeIsolation: only_rmw_uses_lwt + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +You can specify whichever port you want. + +You must provide desired write isolation, supported values are: "always", "forbid_rmw", "only_rmw_uses_lwt". +Difference between those isolation levels can be found in Scylla Alternator documentation. + +Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alternator cluster. + +## Accessing the Database + +* From kubectl: + +To get a cqlsh shell in your new Cluster: +```console +kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh +> DESCRIBE KEYSPACES; +``` + + +* From inside a Pod: + +When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service's name follows the convention `-client`. +You can see this Service in your cluster by running: +```console +kubectl -n scylla describe service simple-cluster-client +``` +Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here's an example using the [Python Driver](https://github.com/datastax/python-driver): +```python +from cassandra.cluster import Cluster + +cluster = Cluster(['simple-cluster-client.scylla.svc']) +session = cluster.connect() +``` + +If you are running the Alternator you can access the API on the port you specified using plain http. + +## Configure Scylla + +The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called `scylla.yaml` that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration. + +* Create a ConfigMap the default name that the operator uses is `scylla-config`: +```console +kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml +``` +* Wait for the mount to propagate and then restart the cluster: +```console +kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a +``` +* The new config should be applied automatically by the operator, check the logs to be sure. + +Configuring `cassandra-rackdc.properties` is done by adding the file to the same mount as `scylla.yaml`. +```console +kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f - +``` +The operator will then apply the overridable properties `prefer_local` and `dc_suffix` if they are available in the provided mounted file. + +``` note:: + If you want to enable authentication, you first need to adjust ``system_auth`` keyspace replication factor to the number of nodes in the datacenter via cqlsh. It allows you to ensure that the user’s information is kept highly available for the cluster. If ``system_auth`` is not equal to the number of nodes and a node fails, the user whose information is on that node will be denied access. + For production environments only use ``NetworkTopologyStrategy``. + + .. code-block:: console + + kubectl -n scylla exec -it pods/simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -e "ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'us-east-1' : };" + + You can read more about enabling authentication in the `Enable authentication `_ section of ScyllaDB's documentation. +``` + +## Configure Scylla Manager Agent + +The operator creates a second container for each scylla instance that runs [Scylla Manager Agent](https://hub.docker.com/r/scylladb/scylla-manager-agent). +This container serves as a sidecar and it's the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups. + +To configure the agent you just create a new secret called _scylla-agent-config-secret_ and populate it with the contents in the `scylla-manager-agent.yaml` file like this: +```console +kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml +``` + +See [Scylla Manager Agent configuration](https://manager.docs.scylladb.com/stable/config/scylla-manager-config.html) for a complete reference of the Scylla Manager agent config file. + +### Scylla Manager Agent auth token + +Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it's empty. +To check which value is being used, decode content of `-auth-token` secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart. + +## Set up monitoring + +To set up monitoring using Prometheus and Grafana follow [this guide](monitoring.md). + +## Scale a ScyllaCluster + +The operator supports adding new nodes to existing racks, adding new racks to the cluster, as well as removing both single nodes and entire racks. To introduce the changes, edit the cluster with: +```console +kubectl -n scylla edit scyllaclusters.scylla.scylladb.com/simple-cluster +``` +* To modify the number of nodes in a rack, update the `members` field of the selected rack to a desired value. +* To add a new rack, append it to the `.spec.datacenter.racks` list. Remember to choose a unique rack name for the new rack. +* To remove a rack, first scale it down to zero nodes, and then remove it from `.spec.datacenter.racks` list. + +Having edited and saved the yaml, you can check your cluster's Status and Events to retrieve information about what's happening: +```console +kubectl -n scylla describe scyllaclusters.scylla.scylladb.com/simple-cluster +``` + +``` note:: + If you have configured ScyllaDB with ``authenticator`` set to ``PasswordAuthenticator``, you need to manually configure the replication factor of the ``system_auth`` keyspace with every scaling operation. + + .. code-block:: console + + kubectl -n scylla exec -it pods/simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -u -p -e "ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'us-east-1' : };" + + + It is recommended to set ``system_auth`` replication factor to the number of nodes in each datacenter. +``` + +## Benchmark with cassandra-stress + +After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster. + +> Because cassandra-stress doesn't scale well to multiple cores, we use multiple jobs with a small core count for each + +```bash + +# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each. +# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec. +hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000 +kubectl apply -f scripts/cassandra-stress.yaml +``` + +Make sure you set the proper arguments in case you have altered things such as _name_ or _namespace_. + +```bash +./hack/cass-stress-gen.py -h +usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT] + [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR] + +Generate cassandra-stress job templates for Kubernetes. + +optional arguments: + -h, --help show this help message and exit + --num-jobs NUM_JOBS number of Kubernetes jobs to generate - defaults to 1 + --name NAME name of the generated yaml file - defaults to cassandra-stress + --namespace NAMESPACE + namespace of the cassandra-stress jobs - defaults to "default" + --scylla-version SCYLLA_VERSION + version of scylla server to use for cassandra-stress - defaults to 4.0.0 + --host HOST ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc + --cpu CPU number of cpus that will be used for each job - defaults to 1 + --memory MEMORY memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu + --ops OPS number of operations for each job - defaults to 10000000 + --threads THREADS number of threads used for each job - defaults to 50 * cpu + --limit LIMIT rate limit for each job - defaults to no rate-limiting + --connections-per-host CONNECTIONS_PER_HOST + number of connections per host - defaults to number of cpus + --print-to-stdout print to stdout instead of writing to a file + --nodeselector NODESELECTOR + nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla +``` +While the benchmark is running, open up Grafana and take a look at the monitoring metrics. + +After the Jobs finish, clean them up with: +```bash +kubectl delete -f scripts/cassandra-stress.yaml +``` + +## Clean Up + +To clean up all resources associated with this walk-through, you can run the commands below. + +**NOTE:** this will destroy your database and delete all of its associated data. + +```console +kubectl delete -f examples/generic/cluster.yaml +kubectl delete -f examples/common/operator.yaml +kubectl delete -f examples/common/cert-manager.yaml +``` + +## Troubleshooting + +If the cluster does not come up, the first step would be to examine the operator's logs: + +```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 +``` diff --git a/v1.11/_sources/gke.md.txt b/v1.11/_sources/gke.md.txt new file mode 100644 index 00000000000..04fe721f224 --- /dev/null +++ b/v1.11/_sources/gke.md.txt @@ -0,0 +1,167 @@ +# Deploying Scylla on GKE + +This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +GCP_USER=$(gcloud config list account --format "value(core.account)") +GCP_PROJECT=$(gcloud config list project --format "value(core.project)") +GCP_ZONE=us-west1-b + +# From inside the examples/gke folder +cd examples/gke +./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE" + +# Example: +# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b +``` + +:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region. + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### Google Kubernetes Engine Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +GCP_USER=$( gcloud config list account --format "value(core.account)" ) +GCP_PROJECT=$( gcloud config list project --format "value(core.project)" ) +GCP_REGION=us-west1 +GCP_ZONE=us-west1-b +CLUSTER_NAME=scylla-demo +CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" ) +``` + +#### Creating a GKE cluster + +First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called `systemconfig.yaml` with the following content: +``` +kubeletConfig: + cpuManagerPolicy: static +``` + +Then we'll create a GKE cluster with the following: + +1. A NodePool of 2 `n1-standard-8` Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes. + ``` + gcloud container \ + clusters create "${CLUSTER_NAME}" \ + --cluster-version "${CLUSTER_VERSION}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-8" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --image-type "UBUNTU_CONTAINERD" \ + --system-config-from-file=systemconfig.yaml \ + --enable-stackdriver-kubernetes \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +2. A NodePool of 2 `n1-standard-32` Nodes to deploy `cassandra-stress` later on. + + ``` + gcloud container --project "${GCP_PROJECT}" \ + node-pools create "cassandra-stress-pool" \ + --cluster "${CLUSTER_NAME}" \ + --zone "${GCP_ZONE}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --node-taints role=cassandra-stress:NoSchedule \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +3. A NodePool of 4 `n1-standard-32` Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as [raw block devices](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd#raw-block). It is important to disable `autoupgrade` and `autorepair`. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it's better to handle upgrades manually, with more control over the process and error handling. + ``` + gcloud container \ + node-pools create "scylla-pool" \ + --cluster "${CLUSTER_NAME}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "4" \ + --disk-type "pd-ssd" --disk-size "20" \ + --local-nvme-ssd-block count="8" \ + --node-taints role=scylla-clusters:NoSchedule \ + --node-labels scylla.scylladb.com/node-type=scylla \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +#### Setting Yourself as `cluster-admin` +> (By default GKE doesn't give you the necessary RBAC permissions) + +Get the credentials for your new cluster +``` +gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}" +``` + +Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission `container.clusterRoleBindings.create`. +The easiest way to obtain this permission is to enable the `Kubernetes Engine Admin` role for your user in the GCP IAM web interface. +``` +kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}" +``` + + +### Prerequisites + +#### Setting up nodes for ScyllaDB + +ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you'll first need to form a RAID array from those disks. +`NodeConfig` performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in [Performance tuning](performance.md) section of ScyllaDB Operator's documentation. + +Deploy `NodeConfig` to let it take care of the above operations: +``` +kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml +``` + +#### Deploying Local Volume Provisioner + +Afterwards, deploy ScyllaDB's [Local Volume Provisioner](https://github.com/scylladb/k8s-local-volume-provisioner), capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays. +``` +kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/ +kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml +``` + +### Deploy Scylla cluster +In order for the example to work you need to modify the cluster definition in the following way: + +``` +sed -i "s//${GCP_REGION}/g;s//${GCP_ZONE}/g" examples/gke/cluster.yaml +``` + +This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created. + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to install the operator and launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting a GKE cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}" +``` diff --git a/v1.11/_sources/helm.md.txt b/v1.11/_sources/helm.md.txt new file mode 100644 index 00000000000..56fbe9620ac --- /dev/null +++ b/v1.11/_sources/helm.md.txt @@ -0,0 +1,339 @@ +# Deploying Scylla stack using Helm Charts + +In this example we will install Scylla stack on Kubernetes. This includes the following components: +- Scylla Operator +- Scylla Manager +- Scylla + +We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator. + +### Prerequisites + +- Kubernetes 1.16+ +- Helm 3+ + +### TL;DR + +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +kubectl apply -f examples/common/cert-manager.yaml +helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator +helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager +helm install scylla scylla/scylla --create-namespace --namespace scylla +``` + +### Deploy Cert Manager + +This step is optional if you want to use your own certificate. +If you don't have one, make sure to not disable autogeneration using Scylla Operator Helm Chart. + +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` + +Once it's deployed, wait until all Cert Manager pods will enter into Running state: + +```console +kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s +``` + +### Helm Chart repository + +To install Scylla Helm Chart repository execute the following commands: +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +``` + +Then you can search through repository, it should contain at least three Helm charts: +``` +helm search repo scylla +NAME CHART VERSION APP VERSION DESCRIPTION +scylla/scylla 1.0.1 v1.0.1 Scylla is a close-to-the-hardware rewrite of Ca... +scylla/scylla-manager 1.0.1 v1.0.1 Scylla Manager automates database operations. +scylla/scylla-operator 1.0.1 v1.0.1 Scylla Operator is a Kubernetes Operator for ma... +``` + +All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit. + +### Scylla Operator Chart + +This chart is very simple, most interesting customizable fields are `image`, `resources` and `webhook`. +All others can be looked up in Chart source in Scylla Operator repository. + +#### image + +Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change `pullPolicy` if default one does not +fullfill your needs. In [Kubernetes documentation](https://kubernetes.io/docs/concepts/containers/images/) you +can read more about different pull policies. + +Image URL will be composed based on these fields in follwing pattern: +`repository/scylla-operator:tag` +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +#### resources + +You can customize how much resources will be allocated for Operator pods via `resource` field: +```yaml +resources: + limits: + cpu: 100m + memory: 128Mi + requests: + cpu: 100m + memory: 32Mi +``` + +To read more about resource specification, follow [Kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/). + +#### webhook + +Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate. + +`createSelfSignedCertificate` specifies whether a self-signed certificate should be created using Cert Manager +`certificateSecretName`: name of a secret containing custom certificate. + +```yaml +webhook: + createSelfSignedCertificate: true + certificateSecretName: "" +``` + +#### Customization + +You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values. + +You can find an example in Scylla Operator repository under `examples/helm/values.operator.yaml` + +#### Installation + +To deploy Scylla Operator using customized values file execute the following: +``` +helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator +``` + +### Scylla Helm Chart + +Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it. + +#### Customization + +Versions of images used in the cluster can be set via `scyllaImage` and `agentImage` +```yaml +scyllaImage: + repository: scylladb/scylla + tag: 4.3.0 + +agentImage: + repository: scylladb/scylla-manager-agent + tag: 2.2.1 +``` + +A minimal Scylla cluster can be expressed as: +```yaml +datacenter: us-east-1 +racks: +- name: us-east-1b + members: 2 + storage: + capacity: 5G + resources: + limits: + cpu: 1 + memory: 1Gi + requests: + cpu: 1 + memory: 1Gi +``` + +Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory. + +For other customizable fields, please refer to [ScyllaCluster CRD definition](scylla-cluster-crd.md). +CRD Rack Spec and Helm Chart Rack should have the same fields. + +#### Installation + +To deploy Scylla cluster using customzied values file execute the following command: +``` +helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla +``` + +Scylla Operator will provision this cluster on your K8s environment. + +### Scylla Manager Helm Chart + +Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster. + +To read more about Scylla Manager see [Manager guide](manager.md). + +#### Scylla Manager + +To set version of used Scylla Manager you can use `image` field: +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: 2.2.1 +``` +To control how many resources are allocated for Scylla Manager use `resource` field: +```yaml +resources: + limits: + cpu: 500m + memory: 500Mi + requests: + cpu: 500m + memory: 500Mi +``` + +#### Scylla Manager Controller + +Similarly Scylla Manager Controller image can be customized: + +```yaml +controllerImage: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +And allocated resources: +```yaml +controllerResources: + limits: + cpu: 100m + memory: 30Mi + requests: + cpu: 100m + memory: 20Mi +``` + +#### Scylla + +To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It's definition should land as a `scylla` field. + +#### Customization + +All others customizable fields can be looked up in Chart source in Scylla Operator repository. + +#### Installation + +To deploy Scylla Manager using customized values file execute the following command: +``` +helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager +``` + +## Results + +Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn't it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces. + +Scylla Operator: +```shell +$ kubectl -n scylla-operator get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-operator-5dbcb54f5c-vjm4m 1/1 Running 0 51s +pod/scylla-operator-5dbcb54f5c-wfjbw 1/1 Running 0 51s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-operator-webhook ClusterIP 10.105.207.130 443/TCP 51s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-operator 2/2 2 2 51s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-operator-5dbcb54f5c 2 2 2 51s + +``` + +Operator is running! + +Scylla Manager: +```shell +$ kubectl -n scylla-manager get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-manager-669db64dd-bcm4v 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-drbth 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-rhwqx 1/1 Running 0 89s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-manager ClusterIP 10.105.231.53 80/TCP,5090/TCP 89s +service/scylla-manager-client ClusterIP None 9180/TCP,5090/TCP 89s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-manager 1/1 1 1 89s +deployment.apps/scylla-manager-controller 2/2 2 2 89s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-manager-669db64dd 1 1 1 89s +replicaset.apps/scylla-manager-controller-844ccc56c4 2 2 2 89s + + +``` + +Good to go, ready to serve! + +Scylla itself: +```shell +$ kubectl -n scylla get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-us-east-1-us-east-1b-0 2/2 Running 0 5m58s +pod/scylla-us-east-1-us-east-1b-1 2/2 Running 0 4m29s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-client ClusterIP None 9180/TCP,5090/TCP 5m59s +service/scylla-us-east-1-us-east-1b-0 ClusterIP 10.43.149.92 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 5m58s +service/scylla-us-east-1-us-east-1b-1 ClusterIP 10.43.49.0 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 4m29s + +NAME READY AGE +statefulset.apps/scylla-us-east-1-us-east-1b 2/2 5m59s +``` + +Two running nodes, exactly what we were asking for. + +## Monitoring + +To spin up a Prometheus monitoring refer to [monitoring guide](monitoring.md). + +Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor: +```yaml +serviceMonitor: + create: false +``` + +Change `create` to `true` and update your current deployment using: +```shell +helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml +``` + +Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics. + +## Cleanup + +To remove these applications you can simply uninstall them using Helm CLI: +```shell +helm uninstall scylla -n scylla +helm uninstall scylla-manager -n scylla-manager +helm uninstall scylla-operator -n scylla-operator +``` diff --git a/v1.11/_sources/index.rst.txt b/v1.11/_sources/index.rst.txt new file mode 100644 index 00000000000..e52285b85c2 --- /dev/null +++ b/v1.11/_sources/index.rst.txt @@ -0,0 +1,63 @@ +============================= +Scylla Operator Documentation +============================= + +.. toctree:: + :hidden: + :maxdepth: 1 + + generic + eks + gke + helm + manager + monitoring + migration + nodeoperations/index + exposing + performance + upgrade + releases + known-issues + scylla-cluster-crd + contributing + +Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades. + +.. image:: logo.png + :width: 200pt + +For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University. + +scylla-operator is a Kubernetes Operator for managing Scylla clusters. + +Currently it supports: + +* Deploying multi-zone clusters +* Scaling up or adding new racks +* Scaling down +* Monitoring with Prometheus and Grafana +* Integration with `Scylla Manager `_ +* Dead node replacement +* Version Upgrade +* Backup +* Repairs +* Autohealing + +**Choose a topic to begin**: + +* :doc:`Deploying Scylla on a Kubernetes Cluster ` +* :doc:`Deploying Scylla on EKS ` +* :doc:`Deploying Scylla on GKE ` +* :doc:`Deploying Scylla Manager on a Kubernetes Cluster ` +* :doc:`Deploying Scylla stack using Helm Charts ` +* :doc:`Setting up Monitoring using Prometheus and Grafana ` +* :doc:`Node operations ` +* :doc:`Exposing ScyllaCluster to other networks ` +* :doc:`Performance tuning [Experimental] ` +* :doc:`Upgrade procedures ` +* :doc:`Releases ` +* :doc:`Known issues ` +* :doc:`Scylla Cluster Custom Resource Definition (CRD) ` +* :doc:`Contributing to the Scylla Operator Project ` diff --git a/v1.11/_sources/known-issues.md.txt b/v1.11/_sources/known-issues.md.txt new file mode 100644 index 00000000000..1af3a7bfdd1 --- /dev/null +++ b/v1.11/_sources/known-issues.md.txt @@ -0,0 +1,14 @@ +# Known issues + +### Scylla Manager does not boot up on Minikube + +If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for [TRUNCATE queries](#truncate-queries-does-not-work-on-minikube). + +### TRUNCATE queries does not work on Minikube + +The `TRUNCATE` queries requires [hairpinning](https://en.wikipedia.org/wiki/Hairpinning) to be enabled. On minikube this is disabled by default. + +To fix it execute the following command: +``` +minikube ssh sudo ip link set docker0 promisc on +``` diff --git a/v1.11/_sources/manager.md.txt b/v1.11/_sources/manager.md.txt new file mode 100644 index 00000000000..ce39f6812a5 --- /dev/null +++ b/v1.11/_sources/manager.md.txt @@ -0,0 +1,258 @@ +# Deploying Scylla Manager on a Kubernetes Cluster + +Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way. + +Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager [Proprietary Software License Agreement](https://www.scylladb.com/scylla-manager-software-license-agreement/) for details. + +## Prerequisites + +* Kubernetes cluster +* Scylla Operator - see [generic guide](generic.md) + +## Architecture + +Scylla Manager in K8s consist of: +- Dedicated Scylla Cluster + + Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace. + +- Scylla Manager Controller + + Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states. + 1. What user wants - task definition in CRD. + 2. What Controller registered - Task name to Task ID mapping - CRD status. + 3. Scylla Manager task listing - internal state of Scylla Manager. + + When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling. + +- Scylla Manager + + Regular Scylla Manager, the same used in cloud and bare metal deployments. + + + +## Deploy Scylla Manager + +Deploy the Scylla Manager using the following commands: + +```console +kubectl apply -f examples/common/manager.yaml +``` + +This will install the Scylla Manager in the `scylla-manager` namespace. +You can check if the Scylla Manager is up and running with: + +```console +kubectl -n scylla-manager get pods +NAME READY STATUS RESTARTS AGE +scylla-manager-cluster-manager-dc-manager-rack-0 2/2 Running 0 37m +scylla-manager-controller-0 1/1 Running 0 28m +scylla-manager-scylla-manager-7bd9f968b9-w25jw 1/1 Running 0 37m +``` + +As you can see there are three pods: +* `scylla-manager-cluster-manager-dc-manager-rack-0` - is a single node Scylla cluster. +* `scylla-manager-controller-0` - Scylla Manager Controller. +* `scylla-manager-scylla-manager-7bd9f968b9-w25jw` - Scylla Manager. + +To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command: + + ```console +kubectl -n scylla-manager logs scylla-manager-controller-0 +``` + +The output should be something like: +```console +{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +``` + +To check logs of Scylla Manager itself, use following command: +```console +kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + +The output should be something like: + +```console +{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +``` + +If there are no errors in the logs, let's spin a Scylla Cluster. + +## Cluster registration + + +When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster. + +See [generic tutorial](generic.md) to spawn your cluster. + +Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager. + +Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager. + + ```console +kubectl -n scylla describe Cluster + +[...] +Status: + Manager Id: d1d532cd-49f2-4c97-9263-25126532803b + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` +You can use this ID to talk to Scylla Manager using `sctool` CLI installed in Scylla Manager Pod. +You can also use Cluster name in `namespace/cluster-name` format. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator). + +In this task listing we can see CQL and REST healthchecks. + +## Task scheduling + +You can either define tasks prior Cluster creation, or for existing Cluster. +Let's edit already running cluster definition to add repair and backup task. +```console +kubectl -n scylla edit Cluster simple-cluster +``` + +Add following task definition to Cluster spec: +``` + repairs: + - name: "users repair" + keyspace: ["users"] + interval: "1d" + backups: + - name: "weekly backup" + location: ["s3:cluster-backups"] + retention: 3 + interval: "7d" + - name: "daily backup" + location: ["s3:cluster-backups"] + retention: 7 + interval: "1d" +``` + +For full task definition configuration consult [Scylla Cluster CRD](scylla-cluster-crd.md). + +**Note**: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up. + +Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372 │ -L s3:cluster-backups --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d) │ NEW │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a │ │ 23 Sep 20 14:38:42 CEST │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly. + +To check progress of run you can use following command: + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a +Status: RUNNING +Start time: 23 Sep 20 14:38:42 UTC +Duration: 13s +Progress: 2.69% +Datacenters: + - us-east-1 ++--------------------+-------+ +| system_auth | 8.06% | +| system_distributed | 0.00% | +| system_traces | 0.00% | ++--------------------+-------+ + +``` +Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing. + +## Clean Up + +To clean up all resources associated with Scylla Manager, you can run the commands below. + +**NOTE:** this will destroy your Scylla Manager database and delete all of its associated data. + +```console +kubectl delete -f examples/common/manager.yaml +``` + +## Troubleshooting + +**Manager is not running** + +If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs: + +```console +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + + +**My task wasn't scheduled** + +If your task wasn't scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs. + +Example: + +Following status describes error when backup task cannot be scheduled, due to lack of access to bucket: +```console +Status: + Backups: + Error: create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug" + Id: 00000000-0000-0000-0000-000000000000 + Interval: 0 + Location: + s3:manager-test + Name: adhoc backup + Num Retries: 3 + Retention: 3 + Start Date: now + Manager Id: 2b9dbe8c-9daa-4703-a66d-c29f63a917c8 + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` + +Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status. \ No newline at end of file diff --git a/v1.11/_sources/migration.md.txt b/v1.11/_sources/migration.md.txt new file mode 100644 index 00000000000..cdd7a7e8522 --- /dev/null +++ b/v1.11/_sources/migration.md.txt @@ -0,0 +1,146 @@ +## Version migrations + + +### `v0.3.0` -> `v1.0.0` migration + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common kind +which is easier to disambiguate (`ScyllaCluster`). +***This change is backward incompatible, which means manual migration is needed.*** + +This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the [upgrade guide](upgrade.md) where full deletion is requested, this procedure shouldn't cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn't run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first. + +***Read the whole procedure and make sure you understand what is going on before executing any of the commands!*** + +In case of any issues or questions regarding this procedure, you're welcomed on our [Scylla Users Slack](http://slack.scylladb.com/) +on #kubernetes channel. + +### Procedure + +1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` + All below commands will use `scylla` namespace and `simple-cluster` as a cluster name. +1. Make sure you're using v1.0.0 tag: + ``` + git checkout v1.0.0 + ``` +1. Upgrade your `cert-manager` to `v1.0.0`. If you installed it from a static file from this repo, simply execute the following: + ``` + kubectl apply -f examples/common/cert-manager.yaml + ``` + If your `cert-manager` was installed in another way, follow official instructions on `cert-manager` website. +1. `examples/common/operator.yaml` file contains multiple resources. Extract **only** `CustomResourceDefinition` to separate file. +1. Install v1.0.0 CRD definition from file created in the previous step: + ``` + kubectl apply -f examples/common/crd.yaml + ``` +1. Save your existing `simple-cluster` Cluster definition to a file: + ``` + kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml + ``` +1. Migrate `Kind` and `ApiVersion` to new values using: + ``` + sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml + sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml + ``` +1. Install migrated CRD instance + ``` + kubectl apply -f existing-cluster.yaml + ``` + At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator. +1. Get UUID of newly created ScyllaCluster resource: + ``` + kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}" + + 12a3678d-8511-4c9c-8a48-fa78d3992694 + ``` + Save output UUID somewhere, it will be referred as `` in commands below. + + ***Depending on your shell, you might get additional '%' sign at the end of UUID, make sure to remove it!*** + +1. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters: + ``` + kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]' + ``` + Amend role name according to your cluster name, it should look like `-member`. +1. Get a list of all Services associated with your cluster. First get list of all services: + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 109m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 108m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 106m + + ``` +1. For each service, change its `ownerReference` to point to new CRD instance: + ``` + kubectl -n scylla patch svc --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with Service name, and `` with saved UUID from one of the previous steps. +1. Get a list of all Services again to see if none was deleted. Check also "Age" column, it shouldn't be lower than previous result. + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 110m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 110m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 107m + + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m + ``` +1. For each StatefulSet from previous step, change its `ownerReference` to point to new CRD instance. + + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with StatefulSet name, and `` with saved UUID from one of the previous steps. + +1. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. + Checkout `v0.3.0` version, and remove Scylla Operator, and old CRD: + ``` + git checkout v0.3.0 + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0`, and install upgraded Scylla Operator: + ``` + git checkout v1.0.0 + kubectl apply -f examples/common/operator.yaml + ``` +1. Wait until Scylla Operator boots up: + ``` + kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m +1. For each StatefulSet from previous step, change its sidecar container image to `v1.0.0`, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one. + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + kubectl -n scylla rollout status sts + ``` + Replace `` with StatefulSet name. +1. If you're using Scylla Manager, bump Scylla Manager Controller image to `v1.0.0` + ``` + kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + ``` +1. Your Scylla cluster is now migrated to `v1.0.0`. diff --git a/v1.11/_sources/monitoring.md.txt b/v1.11/_sources/monitoring.md.txt new file mode 100644 index 00000000000..9f2651c5737 --- /dev/null +++ b/v1.11/_sources/monitoring.md.txt @@ -0,0 +1,180 @@ +# Monitoring + +Scylla Operator 1.8 introduced a new API resource `ScyllaDBMonitoring`, allowing users to deploy a managed monitoring +setup for their Scylla Clusters. + +```yaml +apiVersion: scylla.scylladb.com/v1alpha1 +kind: ScyllaDBMonitoring +metadata: + name: example +spec: + type: Platform + endpointsSelector: + matchLabels: + app.kubernetes.io/name: scylla + scylla-operator.scylladb.com/scylla-service-type: identity + scylla/cluster: replace-with-your-scyllacluster-name + components: + prometheus: + storage: + volumeClaimTemplate: + spec: + resources: + requests: + storage: 1Gi + grafana: + exposeOptions: + webInterface: + ingress: + ingressClassName: haproxy + dnsDomains: + - test-grafana.test.svc.cluster.local + annotations: + haproxy-ingress.github.io/ssl-passthrough: "true" +``` + +For details, refer to the below command: +```console +$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1 +``` + +## Deploy managed monitoring + +**Note**: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions. + +### Requirements + +Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see: +* [Deploying Scylla on a Kubernetes Cluster](generic.md) +* [Deploying Scylla stack using Helm Charts](helm.md) + +The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps. + +#### Deploy Prometheus Operator +Deploy Prometheus Operator using kubectl: +```console +$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator +``` + +##### Wait for Prometheus Operator to roll out +```console +$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator +deployment "prometheus-operator" successfully rolled out +``` + +#### Deploy HAProxy Ingress +Deploy HAProxy Ingress using kubectl: +```console +$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress +``` + +##### Wait for HAProxy Ingress to roll out +```console +$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress +deployment "haproxy-ingress" successfully rolled out +``` + +### Deploy ScyllaDBMonitoring + +First, update the `endpointsSelector` in `examples/monitoring/v1alpha1/scylladbmonitoring.yaml` with a label +matching your ScyllaCluster instance name. + +Deploy the monitoring setup using kubectl: +```console +$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml +``` + +Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources. + +#### Wait for ScyllaDBMonitoring to roll out +```console +$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met +``` + +#### Wait for Prometheus to roll out +```console +$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example +statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb... +``` + +#### Wait for Grafana to roll out +```console +$ kubectl rollout status --timeout=5m deployments.apps/example-grafana +deployment "example-grafana" successfully rolled out +``` + +### Accessing Grafana + +For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller's IP address but most clients and tools allow setting the SNI field manually. + +### Prerequisites + +To access Grafana, you first need to collect the serving CA and the credentials. + +```console +$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )" +$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )" +$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )" +``` + +### Connecting through Ingress using a resolvable domain + +In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like `*.app.mydomain` pointing to the Ingress controller's external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller's A record. + +Note: The ScyllaDBMonitoring example creates an Ingress object with `test-grafana.test.svc.cluster.local` DNS domain that you should adjust to your domain. Below examples use `example-grafana.apps.mydomain`. + +Note: To test a resolvable domain from your machine without creating DNS records, you can adjust `/etc/hosts` or similar. + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` + +### Connecting through Ingress using an unresolvable domain + +To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller's IP that can be resolved externally. Again, there are many ways to do so beyond the below examples. + +Unless stated otherwise, we assume your Ingress is running on port 443. + +```console +$ INGRESS_PORT=443 +``` + +#### Variants + +##### Ingress ExternalIP + +When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address. + +```console +$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )" +``` + +##### Ingress NodePort + +NodePort is slightly less convenient, but it's available in development clusters as well. + +```console +$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )" +$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )" +``` + +##### Connection + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` diff --git a/v1.11/_sources/nodeoperations/automatic-cleanup.md.txt b/v1.11/_sources/nodeoperations/automatic-cleanup.md.txt new file mode 100644 index 00000000000..5e0535cca97 --- /dev/null +++ b/v1.11/_sources/nodeoperations/automatic-cleanup.md.txt @@ -0,0 +1,6 @@ +# Automatic cleanup and replacement in case when k8s node is lost + +In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity. + +When `automaticOrphanedNodeCleanup` flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources. diff --git a/v1.11/_sources/nodeoperations/index.rst.txt b/v1.11/_sources/nodeoperations/index.rst.txt new file mode 100644 index 00000000000..c04919e5d13 --- /dev/null +++ b/v1.11/_sources/nodeoperations/index.rst.txt @@ -0,0 +1,22 @@ +====================================== +Node operations using Scylla Operator +====================================== + +.. toctree:: + :hidden: + :maxdepth: 2 + + scylla-upgrade + replace-node + automatic-cleanup + maintenance-mode + restore + + +Choose a topic: + +* :doc:`Scylla version upgrade ` +* :doc:`Replace Scylla node ` +* :doc:`Automatic cleanup and replacement when k8s node is lost ` +* :doc:`Maintenance mode ` +* :doc:`Restore from backup ` \ No newline at end of file diff --git a/v1.11/_sources/nodeoperations/maintenance-mode.md.txt b/v1.11/_sources/nodeoperations/maintenance-mode.md.txt new file mode 100644 index 00000000000..c976ecc2b87 --- /dev/null +++ b/v1.11/_sources/nodeoperations/maintenance-mode.md.txt @@ -0,0 +1,19 @@ +# Maintenance mode + +When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive. + +This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again. + +To enable maintenance mode add `scylla/node-maintenance` label to service in front of Scylla Pod. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance="" +``` + +To disable, simply remove this label from service. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance- +``` diff --git a/v1.11/_sources/nodeoperations/replace-node.md.txt b/v1.11/_sources/nodeoperations/replace-node.md.txt new file mode 100644 index 00000000000..3e6a8c7f024 --- /dev/null +++ b/v1.11/_sources/nodeoperations/replace-node.md.txt @@ -0,0 +1,74 @@ +# Replacing a Scylla node + +## Replacing a dead node +In the case of a host failure, it may not be possible to bring back the node to life. + +Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth). + +_This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time_ + +**Procedure** + +1. Verify the status of the node using `nodetool status` command, the node with status DN is down and need to be replaced + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.63 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + DN 10.43.43.51 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Identify service which is bound to down node by checking IP address + ```bash + kubectl -n scylla get svc + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.231.189 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.125.110 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h11m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.43.51 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h5m + ``` +1. Drain node which we would like to replace using. **This command may delete your data from local disks attached to given node!** + ```bash + kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data + ``` + + Pod which will be replaced should enter the `Pending` state + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h21m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h19m + simple-cluster-us-east-1-us-east-1a-2 0/2 Pending 0 8m14s + ``` +1. To being node replacing, add `scylla/replace=""` label to service bound to pod we are replacing. + ```bash + kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace="" + ``` + Your failed Pod should be recreated on available k8s node + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h27m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h25m + simple-cluster-us-east-1-us-east-1a-2 1/2 Running 0 9s + ``` + Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. + After bootstraping is over, your new Pod should be ready to go. + Old one shouldn't be no longer visible in `nodetool status` + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.62 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + UN 10.43.191.172 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. + You can use [Scylla Manager](../manager.md) to run the repair. diff --git a/v1.11/_sources/nodeoperations/restore.md.txt b/v1.11/_sources/nodeoperations/restore.md.txt new file mode 100644 index 00000000000..b4d85573cff --- /dev/null +++ b/v1.11/_sources/nodeoperations/restore.md.txt @@ -0,0 +1,89 @@ +# Restore from backup + +This procedure will describe how to restore from backup taken using [Scylla Manager](../manager.md) to a fresh **empty** cluster of any size. + +First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod. +```bash +sctool backup list -c --all-clusters -L +``` + +Where: +* `CLUSTER_ID` - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status. +* `BACKUP_LOCATION` - is a location where backup is stored. For example, for bucket called `backups` stored in AWS S3, location is `s3:backups`. + +```bash +sctool backup list -c simple-cluster --all-clusters -L s3:backups +Snapshots: + - sm_20201227144037UTC (409MiB) + - sm_20201228145917UTC (434MiB) +Keyspaces: + - users (9 tables) + - system_auth (2 tables) + - system_distributed (3 tables) + - system_schema (13 tables) + - system_traces (5 tables) +``` + +To get the list of files use: + +```bash +sctool backup files -c -L -T +``` + +Where: +* `SNAPSHOT_TAG` - name of snapshot you want to restore. + +Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example: +```bash +s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz ./ +``` + +To download this archive you can use AWS CLI tool `aws s3 cp`. + +This archive contains a single CQL file for each keyspace in the backup. +```bash +tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz +-rw------- 0/0 12671 2020-12-28 13:17 users.cql +-rw------- 0/0 2216 2020-12-28 13:17 system_auth.cql +-rw------- 0/0 921 2020-12-28 13:17 system_distributed.cql +-rw------- 0/0 12567 2020-12-28 13:17 system_schema.cql +-rw------- 0/0 4113 2020-12-28 13:17 system_traces.cql +``` + +Extract this archive and copy each schema file to one of the cluster Pods by: +```bash +kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla +``` + +To import schema simply execute: +```bash +kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql +``` + +Once the schema is recreated we can proceed to downloading data files. + +First let's save a list of snapshot files to file called `backup_files.out`: + +```bash +kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out +``` + +We will be using `sstableloader` to restore data. `sstableloader` needs a specific directory structure to work namely: `//` +To create this directory structure and download all the files execute these commands: +```bash +mkdir snapshot +cd snapshot +# Create temporary directory structure. +cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p +# Download snapshot files. +cat ../backup_files.out | xargs -n2 aws s3 cp +``` + +To load data into cluster pass cluster address to `sstableloader` together with path to data files and credentials: +```bash +sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password +``` + +Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host. diff --git a/v1.11/_sources/nodeoperations/scylla-upgrade.md.txt b/v1.11/_sources/nodeoperations/scylla-upgrade.md.txt new file mode 100644 index 00000000000..d39c9666c5e --- /dev/null +++ b/v1.11/_sources/nodeoperations/scylla-upgrade.md.txt @@ -0,0 +1,102 @@ +# Upgrading version of Scylla + +To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition. + +In this example cluster will be upgraded to version `4.4.5`. +```bash +kubectl -n scylla patch ScyllaCluster simple-cluster -p '{"spec":{"version": "4.4.5"}}' --type=merge +``` + +Operator supports two types of version upgrades: +1. Patch upgrade +1. Generic upgrade + + +**Patch upgrade** + +Patch upgrade is executed when only patch version change is detected according to [semantic versioning format](https://semver.org/). +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one. + +Example: `4.0.0 -> 4.0.1` + +**Generic upgrade** + +Generic upgrades are executed for the non patch version changes. + +Example: `4.0.0 -> 2020.1.0` or `4.0.0 -> 4.1.0` or even `4.0.0 -> nightly` + +User can observe current state of upgrade in ScyllaCluster status. +```bash +kubectl -n scylla describe ScyllaCluster simple-cluster +[...] +Status: + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.1.9 + Upgrade: + Current Node: simple-cluster-us-east-1-us-east-1a-2 + Current Rack: us-east-1a + Data Snapshot Tag: so_data_20201228135002UTC + From Version: 4.1.9 + State: validate_upgrade + System Snapshot Tag: so_system_20201228135002UTC + To Version: 4.2.2 +``` + +Each upgrade begins with taking a snapshot of `system` and `system_schema` keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under `System Snapshot Tag`. + +Before nodes in rack are upgraded, underlying StatefulSet is changed to use `OnDelete` UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed. + +When a node is being upgraded, [maintenance mode](#maintenance-mode) is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under `Data Snapshot Tag` and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node. + +Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version. + +Current state of upgrade can be traced using `Current Node`, `Current Rack` and `State` status fields. +* `Current Node` shows which node is being upgraded. +* `Current Rack` displays which rack is being upgraded. +* `State` contain information at which stage upgrade is. + +`State` can have following values: +* `begin_upgrade` - upgrade is starting +* `check_schema_agreement` - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried. +* `create_system_backup` - system keyspaces snapshot is being taken +* `find_next_rack` - Operator finds out which rack must be upgraded next, decision is saved in `Current Rack` +* `upgrade_image_in_pod_spec` - Image and UpgradeStrategy is upgraded in underlying StatefulSet +* `find_next_node` - Operator finds out which node must be upgraded next, decision is saved in `Current Node` +* `enable_maintenance_mode` - maintenance mode is being enabled +* `drain_node` - node is being drained +* `backup_data` - snapshot of data keyspaces is being taken +* `disable_maintenance_mode` - maintenance mode is being disabled +* `delete_pod` - Scylla Pod is being deleted +* `validate_upgrade` - Operator validates if new pod enters Ready state and if Scylla version is upgraded +* `clear_data_backup` - snapshot of data keyspaces is being removed +* `clear_system_backup` - snapshot of system keyspaces is being removed +* `restore_upgrade_strategy` - restore UpgradeStrategy in underlying StatefulSet +* `finish_upgrade` - upgrade cleanup + +**Recovering from upgrade failure** + +Upgrade may get stuck on `validate_upgrade` stage. This happens when Scylla Pod refuses to properly boot up. + +To continue with upgrade, first turn off operator by scaling Operator replicas to zero: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0 +``` +Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names. + +Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2 +``` + +Operator should continue upgrade process from where it left off. diff --git a/v1.11/_sources/performance.md.txt b/v1.11/_sources/performance.md.txt new file mode 100644 index 00000000000..4b0bbd96781 --- /dev/null +++ b/v1.11/_sources/performance.md.txt @@ -0,0 +1,95 @@ +# Performance tuning + +Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes. + +## Node tuning + +Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning. + +Below example NodeConfig tunes nodes having `scylla.scylladb.com/node-type=scylla` label: +``` +apiVersion: scylla.scylladb.com/v1alpha1 +kind: NodeConfig +metadata: + name: cluster +spec: + placement: + nodeSelector: + scylla.scylladb.com/node-type: scylla +``` +For more details about new CRD use: +``` +kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1 +``` + +For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more. + +Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node. + +Scylla works most efficently when it's pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares. + +On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others. +We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively. + +Tuning resources are created in a special namespace called `scylla-operator-node-tuning`. + +The tuning is applied only to pods with `Guaranteed` QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions. + +## Kubernetes tuning + +By default, the kubelet uses the CFS quota to enforce pod CPU limits. +When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static. + +Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider. + +Only pods within the [Guaranteed QoS class](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/#create-a-pod-that-gets-assigned-a-qos-class-of-guaranteed)) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won't be part of the shared pool. + +In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class: +* resource request and limits must be equal or only limits have to be provided +* agentResources must be provided and their requests and limits must be equal, or only limits have to be provided + +An example of such a ScyllaCluster that receives a Guaranteed QoS class is below: + +``` +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: guaranteed-cluster + namespace: scylla +spec: + version: 4.5.1 + agentVersion: 2.5.2 + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500Gi + agentResources: + requests: + cpu: 1 + memory: 1G + limits: + cpu: 1 + memory: 1G + resources: + requests: + cpu: 4 + memory: 16G + limits: + cpu: 4 + memory: 16G +``` \ No newline at end of file diff --git a/v1.11/_sources/releases.md.txt b/v1.11/_sources/releases.md.txt new file mode 100644 index 00000000000..ce4fa27b65d --- /dev/null +++ b/v1.11/_sources/releases.md.txt @@ -0,0 +1,59 @@ +# Releases + +## Schedule +We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates. + +| Release | Code freeze | General availability | +|:-------:|:-----------:|:--------------------:| +| 1.11 | 2023-10-02 | 2023-10-16 | + +## Supported releases +We support the latest 2 releases of the operator to give everyone time to upgrade. + +| Release | General availability | Support ends | +|:-------:|:--------------------:|:---------------:| +| 1.10 | 2023-08-25 | Release of 1.12 | +| 1.9 | 2023-07-04 | Release of 1.11 | +| 1.8 | 2023-01-25 | 2023-08-25 | +| 1.7 | 2022-01-27 | 2023-07-04 | +| 1.6 | 2021-12-03 | 2023-01-25 | +| 1.5 | 2021-09-16 | 2022-01-27 | +| 1.4 | 2021-08-10 | 2021-12-03 | +| 1.3 | 2021-06-17 | 2021-09-16 | +| 1.2 | 2021-05-06 | 2021-08-10 | +| 1.1 | 2021-03-22 | 2021-06-17 | +| 1.0 | 2021-01-21 | 2021-05-06 | + +### Backport policy +Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers. + +## CI/CD +We use [GitHub actions](https://github.com/scylladb/scylla-operator/actions/workflows/go.yaml?query=branch%3Amaster+event%3Apush) for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite. + +### Automated promotions + +| Git reference | Type | Container image | +| :----------------: | :----: | :--------------------------------------------------: | +| **master** | branch | docker.io/scylladb/scylla-operator:**latest** | +| **vX.Y** | branch | docker.io/scylladb/scylla-operator:**X.Y** | +| **vX.Y.Z** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z** | +| **vX.Y.Z-alpha.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-alpha.N** | +| **vX.Y.Z-beta.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-beta.N** | +| **vX.Y.Z-rc.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-rc.N** | + +### Generally available +GA images aren't build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate. + +## Support matrix + +Support matrix table shows the version requirements for a particular **scylla-operator** version. Be sure to match these requirements, otherwise some functionality will not work. + +| | v1.10 | v1.9 | v1.8 | v1.7 | v1.6 | v1.5 | v1.4 | v1.3 | v1.2 | v1.1 | v1.0 | +|:-----------------:|:----------:|:----------:|:----------:|:-----------------:|:--------------------:|:-----------:|:-----------:|:----------:|:----------:|:----------:|:----------:| +| Kubernetes | `>=1.21` | `>=1.21` | `>=1.21` | `>=1.20 && <1.25` | `>=1.19.10 && <1.25` | `>=1.19.10` | `>=1.19.10` | `>=1.19` | `>=1.19` | `>=1.11` | `>=1.11` | +| CRI API | `v1` | `v1` | `v1alpha2` | `v1alpha2` | `v1alpha2` | | | | | | | +| Scylla OS | `>=5.0` | `>=5.0` | `>=5.0` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.2` | `>=4.2` | `>=4.0` | `>=4.0` | +| Scylla Enterprise | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | +| Scylla Manager | `>=2.6` | `>=2.6` | `>=2.6` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | +| Scylla Monitoring | `>=4.0` | `>=4.0` | `>=4.0` | `>=3.0` | `>=3.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | diff --git a/v1.11/_sources/scylla-cluster-crd.md.txt b/v1.11/_sources/scylla-cluster-crd.md.txt new file mode 100644 index 00000000000..75d34f1a028 --- /dev/null +++ b/v1.11/_sources/scylla-cluster-crd.md.txt @@ -0,0 +1,188 @@ +# Scylla Cluster CRD + +Scylla database clusters can be created and configured using the `clusters.scylla.scylladb.com` custom resource definition (CRD). + +Please refer to the the [user guide walk-through](generic.md) for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD. + +## Sample + +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: simple-cluster + namespace: scylla +spec: + version: 2.3.1 + repository: scylladb/scylla + developerMode: true + cpuset: false + automaticOrphanedNodeCleanup: true + repairs: + - name: "weekly us-east-1 repair" + intensity: "2" + interval: "7d" + dc: ["us-east-1"] + backups: + - name: "daily users backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "1d" + keyspace: ["users"] + - name: "weekly full cluster backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "7d" + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500G + storageClassName: local-raid-disks + resources: + requests: + cpu: 8 + memory: 32Gi + limits: + cpu: 8 + memory: 32Gi + placement: + nodeAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + nodeSelectorTerms: + - matchExpressions: + - key: failure-domain.beta.kubernetes.io/region + operator: In + values: + - us-east-1 + - key: failure-domain.beta.kubernetes.io/zone + operator: In + values: + - us-east-1a + tolerations: + - key: role + operator: Equal + value: scylla-clusters + effect: NoSchedule +``` + +## Settings Explanation + +### Cluster Settings + +* `version`: The version of Scylla to use. It is used as the image tag to pull. +* `agentVersion`: The version of Scylla Manager Agent to use. It is used as the image tag to pull. +* `repository`: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `agentRepository`: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `developerMode`: Optional field. If it's true, then Scylla is started in [developer mode](https://www.scylladb.com/2016/09/13/test-dev-env/). This setting is for shared test/dev environments. +* `cpuset`: Optional field. If it's true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and only specify limits in resources. +* `automaticOrphanedNodeCleanup`: Optional field. Controls if automatic orphan node cleanup should be performed. +* `alternator`: Optional field. Defines Alternator configuration. + * `port`: Port on which to bind to Alternator API. + * `writeIsolation`: *required* Desired write isolation. +* `genericUpgrade`: Optional field. Defines GenericUpgrade configuration. + * `failureStrategy`: specifies which logic is executed when upgrade failure happens. Currently only `Retry` is supported. + * `pollInterval`: specifies how often upgrade logic polls on state updates. + Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect + overall time spent during upgrade. +* `datacenter`: Datacenter definition. +* `sysctls`: Optional field. Sysctl properties to be applied during initialization. +* `scyllaArgs`: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it. +* `network`: Optional field. Allows to customize network parameters. + * `hostNetworking`: controls if host networking should be enabled. + * `dnsPolicy`: controls Scylla Pod DNS Policy. See [details](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy). +* `repairs`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. +* `backups`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. + + +In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups. + +### Scylla Manager settings + +Tasks are scheduled only when Scylla Manager is deployed in K8s cluster. + +Repairs: +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. Task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. The number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1", "!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `failFast` - Optional field. Stop repair on first error. +* `intensity` - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. + If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). + Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. + Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. + For Scylla clusters that **do not support row-level repair**, intensity can be a decimal between (0,1). + In that case it specifies percent of shards that can be repaired in parallel on a repair master node. + For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. + **Intensity is a number passed as string due to lack of support for float values in k8s controller runtime** +* `parallel` - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). + Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. + The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. + The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace", "!keyspace.table_prefix_*"]` +used to include or exclude keyspaces from repair. +* `smallTableThreshold` - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units `[B, MiB, GiB, TiB]` (default `"1GiB"`). + +Backups: + +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - Optional field. Specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. the number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1","!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace","!keyspace.table_prefix_*"]` used to include or exclude keyspaces from backup. +* `location` - Optional field. A list of backup locations in the format `[:]:` ex. `s3:my-bucket`. +The `:` part is optional and is only needed when different datacenters are being used to upload data to different locations. +`` Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are `s3` and `gcs`. +* `rateLimit` - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format `[:]`. +The `:` part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100). +* `retention` - Optional field. The number of backups which are to be stored (default 3). +* `snapshotParallel` - Optional field. A list of snapshot parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set, the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. +* `uploadParallel` - Optional field. A list of upload parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. + + +### Datacenter Settings + +* `name`: Name of the datacenter. Usually, a datacenter corresponds to a region. +* `racks`: List of racks for the specific datacenter. + +### Rack Settings + +* `name`: Name of the rack. Usually, a rack corresponds to an availability zone. +* `members`: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don't call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node). +* `storage`: Defines the specs of the underlying storage. + * `capacity`: Capacity of the PersistentVolume to request. + * `storageClassName`: Optional field. [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes/) of PersistentVolume to request. +* `resources`: Defines the CPU and RAM resources for the Scylla Pods. + * `requests`: The minimum amount of resources needed to run a Scylla container. + * `cpu`: CPU requests. + * `memory`: RAM requests. + * `limits`: The maximum amount of resources that can be used by a Scylla container. + * `cpu`: CPU limits. + * `memory`: RAM limits. +* `agentResources`: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See `resources` for details. +* `volumes`: Optional field. Defines volumes available in Scylla Pod. See [details](https://kubernetes.io/docs/concepts/storage/volumes/). +* `volumeMounts`: Optional field. Defines which volumes will be attached to Scylla container. +* `agentVolumeMounts`: Optional field. Defines which volumes will be attached to Agent container. +* `scyllaConfig`: Optional field. name of custom config map which will be merged with Scylla config. +* `scyllaAgentConfig`: Optional field. name of custom secret which will be merged with Scylla Manager Agent config. +* `placement`: Optional field. Defines the placement of Scylla Pods. Has the following subfields: + * [`nodeAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature) + * [`podAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`podAntiAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`tolerations`](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration) diff --git a/v1.11/_sources/upgrade.md.txt b/v1.11/_sources/upgrade.md.txt new file mode 100644 index 00000000000..ab14157256b --- /dev/null +++ b/v1.11/_sources/upgrade.md.txt @@ -0,0 +1,184 @@ +# Upgrade of Scylla Operator + +This page describes Scylla Operator upgrade procedures. +There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps. + +## Upgrade via Helm + +Helm doesn't support managing CustomResourceDefinition resources ([#5871](https://github.com/helm/helm/issues/5871), [#7735](https://github.com/helm/helm/issues/7735)) +These are only created on first install and never updated. In order to update them, users have to do it manually. + +Replace `` with the name of your Helm release for Scylla Operator and replace `` with the version number you want to install: +1. Make sure Helm chart repository is up-to-date: + ``` + helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable + helm repo update + ``` +2. Update CRD resources. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + tmpdir=$( mktemp -d ) \ + && helm pull scylla-operator/scylla-operator --version --untar --untardir "${tmpdir}" \ + && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \ + | xargs kubectl apply + ``` +3. Update Scylla Operator + ``` + helm upgrade --version scylla-operator/scylla-operator + ``` + +## Upgrade via kubectl + +Replace `` with the version number you want to install: + +1. Checkout source code of version you want to use: + ``` + git checkout + ``` +2. Manifests use rolling minor version tag, you may want to pin it to specific version: + ``` + find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:^g" + ``` +3. Update Scylla Operator. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + kubectl apply -f deploy/operator + ``` + +--- + +## `v1.2.0` -> `v1.3.0` + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.3.0: + ``` + git checkout v1.3.0 + ``` +1. Update Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.1.0` -> `v1.2.0` + +1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones. + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.2.0: + ``` + git checkout v1.2.0 + ``` +1. Remove old scylla operator namespace - in our case it's called `scylla-operator-system`: + ``` + kubectl delete namespace scylla-operator-system --wait=true + ``` +1. Remove old webhooks: + ``` + kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration + kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration + ``` +1. Install Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.0.0` -> `v1.1.0` + +During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected. + +1. Get name of StatefulSet managing Scylla Operator + ```shell + kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager" + + NAME READY AGE + scylla-operator-controller-manager 1/1 95m + ``` + +1. Change probes and used container image by applying following patch: + ```yaml + spec: + template: + spec: + containers: + - name: manager + image: docker.io/scylladb/scylla-operator:1.1.0 + livenessProbe: + httpGet: + path: /healthz + port: 8080 + scheme: HTTP + readinessProbe: + $retainKeys: + - httpGet + httpGet: + path: /readyz + port: 8080 + scheme: HTTP + ``` + To apply above patch save it to file (`operator-patch.yaml` for example) and apply to Operator StatefulSet: + ```shell + kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)" + ``` + + +## `v0.3.0` -> `v1.0.0` + +***Note:*** There's an experimental migration procedure available [here](migration.md). + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common +kind which is easier to disambiguate. (`ScyllaCluster`). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide. + +1. Get list of existing Scylla clusters + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` +1. Delete each one of them + + ``` + kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster + ``` +1. Make sure you're on `v0.3.0` branch + ``` + git checkout v0.3.0 + ``` +1. Delete existing CRD and Operator + ``` + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0` version + ``` + git checkout v1.0.0 + ``` +1. Install new CRD and Scylla Operator + ``` + kubectl apply -f examples/common/operator.yaml + ``` +1. Migrate your existing Scylla Cluster definition. Change `apiVersion` and `kind` from: + ``` + apiVersion: scylla.scylladb.com/v1alpha1 + kind: Cluster + ``` + to: + ``` + apiVersion: scylla.scylladb.com/v1 + kind: ScyllaCluster + ``` +1. Once your cluster definition is ready, use `kubectl apply` to install fresh Scylla cluster. diff --git a/v1.11/_static/basic.css b/v1.11/_static/basic.css new file mode 100644 index 00000000000..bf18350b65c --- /dev/null +++ b/v1.11/_static/basic.css @@ -0,0 +1,906 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; + margin-right: 5px; +} + +/* -- sidebar --------------------------------------------------------------- */ + +div.sphinxsidebarwrapper { + padding: 10px 5px 0 10px; +} + +div.sphinxsidebar { + float: left; + width: 230px; + margin-left: -100%; + font-size: 90%; + word-wrap: break-word; + overflow-wrap : break-word; +} + +div.sphinxsidebar ul { + list-style: none; +} + +div.sphinxsidebar ul ul, +div.sphinxsidebar ul.want-points { + margin-left: 20px; + list-style: square; +} + +div.sphinxsidebar ul ul { + margin-top: 0; + margin-bottom: 0; +} + +div.sphinxsidebar form { + margin-top: 10px; +} + +div.sphinxsidebar input { + border: 1px solid #98dbcc; + font-family: sans-serif; + font-size: 1em; +} + +div.sphinxsidebar #searchbox form.search { + overflow: hidden; +} + +div.sphinxsidebar #searchbox input[type="text"] { + float: left; + width: 80%; + padding: 0.25em; + box-sizing: border-box; +} + +div.sphinxsidebar #searchbox input[type="submit"] { + float: left; + width: 20%; + border-left: none; + padding: 0.25em; + box-sizing: border-box; +} + + +img { + border: 0; + max-width: 100%; +} + +/* -- search page ----------------------------------------------------------- */ + +ul.search { + margin: 10px 0 0 20px; + padding: 0; +} + +ul.search li { + padding: 5px 0 5px 20px; + background-image: url(file.png); + background-repeat: no-repeat; + background-position: 0 7px; +} + +ul.search li a { + font-weight: bold; +} + +ul.search li p.context { + color: #888; + margin: 2px 0 0 30px; + text-align: left; +} + +ul.keywordmatches li.goodmatch a { + font-weight: bold; +} + +/* -- index page ------------------------------------------------------------ */ + +table.contentstable { + width: 90%; + margin-left: auto; + margin-right: auto; +} + +table.contentstable p.biglink { + line-height: 150%; +} + +a.biglink { + font-size: 1.3em; +} + +span.linkdescr { + font-style: italic; + padding-top: 5px; + font-size: 90%; +} + +/* -- general index --------------------------------------------------------- */ + +table.indextable { + width: 100%; +} + +table.indextable td { + text-align: left; + vertical-align: top; +} + +table.indextable ul { + margin-top: 0; + margin-bottom: 0; + list-style-type: none; +} + +table.indextable > tbody > tr > td > ul { + padding-left: 0em; +} + +table.indextable tr.pcap { + height: 10px; +} + +table.indextable tr.cap { + margin-top: 10px; + background-color: #f2f2f2; +} + +img.toggler { + margin-right: 3px; + margin-top: 3px; + cursor: pointer; +} + +div.modindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +div.genindex-jumpbox { + border-top: 1px solid #ddd; + border-bottom: 1px solid #ddd; + margin: 1em 0 1em 0; + padding: 0.4em; +} + +/* -- domain module index --------------------------------------------------- */ + +table.modindextable td { + padding: 2px; + border-collapse: collapse; +} + +/* -- general body styles --------------------------------------------------- */ + +div.body { + min-width: 450px; + max-width: 800px; +} + +div.body p, div.body dd, div.body li, div.body blockquote { + -moz-hyphens: auto; + -ms-hyphens: auto; + -webkit-hyphens: auto; + hyphens: auto; +} + +a.headerlink { + visibility: hidden; +} + +a.brackets:before, +span.brackets > a:before{ + content: "["; +} + +a.brackets:after, +span.brackets > a:after { + content: "]"; +} + +h1:hover > a.headerlink, +h2:hover > a.headerlink, +h3:hover > a.headerlink, +h4:hover > a.headerlink, +h5:hover > a.headerlink, +h6:hover > a.headerlink, +dt:hover > a.headerlink, +caption:hover > a.headerlink, +p.caption:hover > a.headerlink, +div.code-block-caption:hover > a.headerlink { + visibility: visible; +} + +div.body p.caption { + text-align: inherit; +} + +div.body td { + text-align: left; +} + +.first { + margin-top: 0 !important; +} + +p.rubric { + margin-top: 30px; + font-weight: bold; +} + +img.align-left, figure.align-left, .figure.align-left, object.align-left { + clear: left; + float: left; + margin-right: 1em; +} + +img.align-right, figure.align-right, .figure.align-right, object.align-right { + clear: right; + float: right; + margin-left: 1em; +} + +img.align-center, figure.align-center, .figure.align-center, object.align-center { + display: block; + margin-left: auto; + margin-right: auto; +} + +img.align-default, figure.align-default, .figure.align-default { + display: block; + margin-left: auto; + margin-right: auto; +} + +.align-left { + text-align: left; +} + +.align-center { + text-align: center; +} + +.align-default { + text-align: center; +} + +.align-right { + text-align: right; +} + +/* -- sidebars -------------------------------------------------------------- */ + +div.sidebar, +aside.sidebar { + margin: 0 0 0.5em 1em; + border: 1px solid #ddb; + padding: 7px; + background-color: #ffe; + width: 40%; + float: right; + clear: right; + overflow-x: auto; +} + +p.sidebar-title { + font-weight: bold; +} + +div.admonition, div.topic, blockquote { + clear: left; +} + +/* -- topics ---------------------------------------------------------------- */ + +div.topic { + border: 1px solid #ccc; + padding: 7px; + margin: 10px 0 10px 0; +} + +p.topic-title { + font-size: 1.1em; + font-weight: bold; + margin-top: 10px; +} + +/* -- admonitions ----------------------------------------------------------- */ + +div.admonition { + margin-top: 10px; + margin-bottom: 10px; + padding: 7px; +} + +div.admonition dt { + font-weight: bold; +} + +p.admonition-title { + margin: 0px 10px 5px 0px; + font-weight: bold; +} + +div.body p.centered { + text-align: center; + margin-top: 25px; +} + +/* -- content of sidebars/topics/admonitions -------------------------------- */ + +div.sidebar > :last-child, +aside.sidebar > :last-child, +div.topic > :last-child, +div.admonition > :last-child { + margin-bottom: 0; +} + +div.sidebar::after, +aside.sidebar::after, +div.topic::after, +div.admonition::after, +blockquote::after { + display: block; + content: ''; + clear: both; +} + +/* -- tables ---------------------------------------------------------------- */ + +table.docutils { + margin-top: 10px; + margin-bottom: 10px; + border: 0; + border-collapse: collapse; +} + +table.align-center { + margin-left: auto; + margin-right: auto; +} + +table.align-default { + margin-left: auto; + margin-right: auto; +} + +table caption span.caption-number { + font-style: italic; +} + +table caption span.caption-text { +} + +table.docutils td, table.docutils th { + padding: 1px 8px 1px 5px; + border-top: 0; + border-left: 0; + border-right: 0; + border-bottom: 1px solid #aaa; +} + +table.footnote td, table.footnote th { + border: 0 !important; +} + +th { + text-align: left; + padding-right: 5px; +} + +table.citation { + border-left: solid 1px gray; + margin-left: 1px; +} + +table.citation td { + border-bottom: none; +} + +th > :first-child, +td > :first-child { + margin-top: 0px; +} + +th > :last-child, +td > :last-child { + margin-bottom: 0px; +} + +/* -- figures --------------------------------------------------------------- */ + +div.figure, figure { + margin: 0.5em; + padding: 0.5em; +} + +div.figure p.caption, figcaption { + padding: 0.3em; +} + +div.figure p.caption span.caption-number, +figcaption span.caption-number { + font-style: italic; +} + +div.figure p.caption span.caption-text, +figcaption span.caption-text { +} + +/* -- field list styles ----------------------------------------------------- */ + +table.field-list td, table.field-list th { + border: 0 !important; +} + +.field-list ul { + margin: 0; + padding-left: 1em; +} + +.field-list p { + margin: 0; +} + +.field-name { + -moz-hyphens: manual; + -ms-hyphens: manual; + -webkit-hyphens: manual; + hyphens: manual; +} + +/* -- hlist styles ---------------------------------------------------------- */ + +table.hlist { + margin: 1em 0; +} + +table.hlist td { + vertical-align: top; +} + +/* -- object description styles --------------------------------------------- */ + +.sig { + font-family: 'Consolas', 'Menlo', 'DejaVu Sans Mono', 'Bitstream Vera Sans Mono', monospace; +} + +.sig-name, code.descname { + background-color: transparent; + font-weight: bold; +} + +.sig-name { + font-size: 1.1em; +} + +code.descname { + font-size: 1.2em; +} + +.sig-prename, code.descclassname { + background-color: transparent; +} + +.optional { + font-size: 1.3em; +} + +.sig-paren { + font-size: larger; +} + +.sig-param.n { + font-style: italic; +} + +/* C++ specific styling */ + +.sig-inline.c-texpr, +.sig-inline.cpp-texpr { + font-family: unset; +} + +.sig.c .k, .sig.c .kt, +.sig.cpp .k, .sig.cpp .kt { + color: #0033B3; +} + +.sig.c .m, +.sig.cpp .m { + color: #1750EB; +} + +.sig.c .s, .sig.c .sc, +.sig.cpp .s, .sig.cpp .sc { + color: #067D17; +} + + +/* -- other body styles ----------------------------------------------------- */ + +ol.arabic { + list-style: decimal; +} + +ol.loweralpha { + list-style: lower-alpha; +} + +ol.upperalpha { + list-style: upper-alpha; +} + +ol.lowerroman { + list-style: lower-roman; +} + +ol.upperroman { + list-style: upper-roman; +} + +:not(li) > ol > li:first-child > :first-child, +:not(li) > ul > li:first-child > :first-child { + margin-top: 0px; +} + +:not(li) > ol > li:last-child > :last-child, +:not(li) > ul > li:last-child > :last-child { + margin-bottom: 0px; +} + +ol.simple ol p, +ol.simple ul p, +ul.simple ol p, +ul.simple ul p { + margin-top: 0; +} + +ol.simple > li:not(:first-child) > p, +ul.simple > li:not(:first-child) > p { + margin-top: 0; +} + +ol.simple p, +ul.simple p { + margin-bottom: 0; +} + +dl.footnote > dt, +dl.citation > dt { + float: left; + margin-right: 0.5em; +} + +dl.footnote > dd, +dl.citation > dd { + margin-bottom: 0em; +} + +dl.footnote > dd:after, +dl.citation > dd:after { + content: ""; + clear: both; +} + +dl.field-list { + display: grid; + grid-template-columns: fit-content(30%) auto; +} + +dl.field-list > dt { + font-weight: bold; + word-break: break-word; + padding-left: 0.5em; + padding-right: 5px; +} + +dl.field-list > dt:after { + content: ":"; +} + +dl.field-list > dd { + padding-left: 0.5em; + margin-top: 0em; + margin-left: 0em; + margin-bottom: 0em; +} + +dl { + margin-bottom: 15px; +} + +dd > :first-child { + margin-top: 0px; +} + +dd ul, dd table { + margin-bottom: 10px; +} + +dd { + margin-top: 3px; + margin-bottom: 10px; + margin-left: 30px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/v1.11/_static/check-solid.svg b/v1.11/_static/check-solid.svg new file mode 100644 index 00000000000..92fad4b5c0b --- /dev/null +++ b/v1.11/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/v1.11/_static/clipboard.min.js b/v1.11/_static/clipboard.min.js new file mode 100644 index 00000000000..54b3c463811 --- /dev/null +++ b/v1.11/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/v1.11/_static/copybutton.css b/v1.11/_static/copybutton.css new file mode 100644 index 00000000000..f1916ec7d1b --- /dev/null +++ b/v1.11/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/v1.11/_static/copybutton.js b/v1.11/_static/copybutton.js new file mode 100644 index 00000000000..2ea7ff3e217 --- /dev/null +++ b/v1.11/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/v1.11/_static/copybutton_funcs.js b/v1.11/_static/copybutton_funcs.js new file mode 100644 index 00000000000..dbe1aaad79c --- /dev/null +++ b/v1.11/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/v1.11/_static/css/main.css b/v1.11/_static/css/main.css new file mode 100644 index 00000000000..4ac01745289 --- /dev/null +++ b/v1.11/_static/css/main.css @@ -0,0 +1 @@ +@media 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details. + * + */ + +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + +/** + * make the code below compatible with browsers without + * an installed firebug like debugger +if (!window.console || !console.firebug) { + var names = ["log", "debug", "info", "warn", "error", "assert", "dir", + "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", + "profile", "profileEnd"]; + window.console = {}; + for (var i = 0; i < names.length; ++i) + window.console[names[i]] = function() {}; +} + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} + +/** + * Small JavaScript module for the documentation. + */ +var Documentation = { + + init : function() { + this.fixFirefoxAnchorBug(); + this.highlightSearchWords(); + this.initIndexTable(); + this.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS : {}, + PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; }, + LOCALE : 'unknown', + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext : function(string) { + var translated = Documentation.TRANSLATIONS[string]; + if (typeof translated === 'undefined') + return string; + return (typeof translated === 'string') ? translated : translated[0]; + }, + + ngettext : function(singular, plural, n) { + var translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated === 'undefined') + return (n == 1) ? singular : plural; + return translated[Documentation.PLURALEXPR(n)]; + }, + + addTranslations : function(catalog) { + for (var key in catalog.messages) + this.TRANSLATIONS[key] = catalog.messages[key]; + this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')'); + this.LOCALE = catalog.locale; + }, + + /** + * add context elements like header anchor links + */ + addContextElements : function() { + $('div[id] > :header:first').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this headline')). + appendTo(this); + }); + $('dt[id]').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this definition')). + appendTo(this); + }); + }, + + /** + * workaround a firefox stupidity + * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075 + */ + fixFirefoxAnchorBug : function() { + if (document.location.hash && $.browser.mozilla) + window.setTimeout(function() { + document.location.href += ''; + }, 10); + }, + + /** + * highlight the search words provided in the url in the text + */ + highlightSearchWords : function() { + var params = $.getQueryParameters(); + var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : []; + if (terms.length) { + var body = $('div.body'); + if (!body.length) { + body = $('body'); + } + window.setTimeout(function() { + $.each(terms, function() { + body.highlightText(this.toLowerCase(), 'highlighted'); + }); + }, 10); + $('') + .appendTo($('#searchbox')); + } + }, + + /** + * init the domain index toggle buttons + */ + initIndexTable : function() { + var togglers = $('img.toggler').click(function() { + var src = $(this).attr('src'); + var idnum = $(this).attr('id').substr(7); + $('tr.cg-' + idnum).toggle(); + if (src.substr(-9) === 'minus.png') + $(this).attr('src', src.substr(0, src.length-9) + 'plus.png'); + else + $(this).attr('src', src.substr(0, src.length-8) + 'minus.png'); + }).css('display', ''); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) { + togglers.click(); + } + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords : function() { + $('#searchbox .highlight-link').fadeOut(300); + $('span.highlighted').removeClass('highlighted'); + var url = new URL(window.location); + url.searchParams.delete('highlight'); + window.history.replaceState({}, '', url); + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar : function() { + $('input[name=q]').first().focus(); + }, + + /** + * make the url absolute + */ + makeURL : function(relativeURL) { + return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL; + }, + + /** + * get the current relative url + */ + getCurrentURL : function() { + var path = document.location.pathname; + var parts = path.split(/\//); + $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() { + if (this === '..') + parts.pop(); + }); + var url = parts.join('/'); + return path.substring(url.lastIndexOf('/') + 1, path.length - 1); + }, + + initOnKeyListeners: function() { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + return; + + $(document).keydown(function(event) { + var activeElementType = document.activeElement.tagName; + // don't navigate when in search box, textarea, dropdown or button + if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT' + && activeElementType !== 'BUTTON') { + if (event.altKey || event.ctrlKey || event.metaKey) + return; + + if (!event.shiftKey) { + switch (event.key) { + case 'ArrowLeft': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var prevHref = $('link[rel="prev"]').prop('href'); + if (prevHref) { + window.location.href = prevHref; + return false; + } + break; + case 'ArrowRight': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var nextHref = $('link[rel="next"]').prop('href'); + if (nextHref) { + window.location.href = nextHref; + return false; + } + break; + case 'Escape': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.hideSearchWords(); + return false; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case '/': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.focusSearchBar(); + return false; + } + } + }); + } +}; + +// quick alias for translations +_ = Documentation.gettext; + +$(document).ready(function() { + Documentation.init(); +}); diff --git a/v1.11/_static/documentation_options.js b/v1.11/_static/documentation_options.js new file mode 100644 index 00000000000..724e3825774 --- /dev/null +++ b/v1.11/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '', + LANGUAGE: 'None', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + 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+1,10872 @@ +/*! + * jQuery JavaScript Library v3.5.1 + * https://jquery.com/ + * + * Includes Sizzle.js + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2020-05-04T22:49Z + */ +( function( global, factory ) { + + "use strict"; + + if ( typeof module === "object" && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.5.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.5 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2020-03-14 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting
or other required elements. + thead: [ 1, "
", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px"; + tr.style.height = "1px"; + trChild.style.height = "9px"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = parseInt( trStyle.height ) > 3; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( + dataPriv.get( cur, "events" ) || Object.create( null ) + )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script + if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Contributing to Scylla Operator

+
+

Prerequisites

+

To develop on scylla-operator, your environment must have the following:

+
    +
  1. Go 1.13

    +
      +
    • Make sure GOPATH is set to GOPATH=$HOME/go.

    • +
    +
  2. +
  3. Kustomize v3.1.0

  4. +
  5. kubebuilder v2.3.1

  6. +
  7. Docker

  8. +
  9. Git client installed

  10. +
  11. Github account

  12. +
+

To install all dependencies (Go, kustomize, kubebuilder, dep), simply run:

+
./install-dependencies.sh
+
+
+
+
+

Initial Setup

+
+

Create a Fork

+

From your browser navigate to http://github.com/scylladb/scylla-operator and click the “Fork” button.

+
+
+

Clone Your Fork

+

Open a console window and do the following:

+
# Create the scylla operator repo path
+mkdir -p $GOPATH/src/github.com/scylladb
+
+# Navigate to the local repo path and clone your fork
+cd $GOPATH/src/github.com/scylladb
+
+# Clone your fork, where <user> is your GitHub account name
+git clone https://github.com/<user>/scylla-operator.git
+
+
+
+
+

Add Upstream Remote

+

First you will need to add the upstream remote to your local git:

+
# Add 'upstream' to the list of remotes
+git remote add upstream https://github.com/scylladb/scylla-operator.git
+
+# Verify the remote was added
+git remote -v
+
+
+

Now you should have at least origin and upstream remotes. You can also add other remotes to collaborate with other contributors.

+
+
+
+

Development

+

To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch.

+
+

Building the project

+

You can build the project using the Makefile commands:

+
    +
  • Open the Makefile and change the IMG environment variable to a repository you have access to.

  • +
  • Run make docker-push and wait for the image to be built and uploaded in your repo.

  • +
+
+
+

Create a Branch

+

From a console, create a new branch based on your fork and start working on it:

+
# Ensure all your remotes are up to date with the latest
+git fetch --all
+
+# Create a new branch that is based off upstream master.  Give it a simple, but descriptive name.
+# Generally it will be two to three words separated by dashes and without numbers.
+git checkout -b feature-name upstream/master
+
+
+

Now you are ready to make the changes and commit to your branch.

+
+
+

Updating Your Fork

+

During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to rebase your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean.

+

Whenever you need to update your local repository, you never want to merge. You always will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (git stash save -u "<some description>").

+
git fetch --all
+git rebase upstream/master
+
+
+

Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the Git documentation, it will be well worth it. In a nutshell, rebasing does the following:

+
    +
  • “Unwinds” your local commits. Your local commits are removed temporarily from the history.

  • +
  • The latest changes from upstream are added to the history

  • +
  • Your local commits are re-applied one by one

  • +
  • If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase.

  • +
  • When done rebasing, you will see all of your commits in the history.

  • +
+
+
+
+

Submitting a Pull Request

+

Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream.

+

In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged.

+
+

Commit History

+

To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits.

+
# Inspect your commit history to determine if you need to squash commits
+git log
+
+# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean.
+# In this example, the last 5 commits will be opened in the git rebase tool.
+git rebase -i HEAD~5
+
+
+

Once your commit history is clean, ensure you have based on the latest upstream before you open the PR.

+
+
+

Commit messages

+

Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good!

+

If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed.

+

Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you’ve forgotten everything about what you just did, and you need to get up to speed quickly.

+

If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don’t want to close the associated issue just put #1234 and the change will get linked into the issue.

+

Here is an example of a short commit message:

+
sidecar: log on reconcile loop - fixes #1234
+
+
+

And here is an example of a longer one:

+

+api: now supports host networking (#1234)
+
+The operator CRD now has a "network" property that can be used to
+select host networking as well as setting the apropriate DNS policy.
+
+Fixes #1234
+
+
+
+
+

Submitting

+

Go to the Scylla Operator github to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR.

+

After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/eks.html b/v1.11/eks.html new file mode 100644 index 00000000000..0ec2e029cb0 --- /dev/null +++ b/v1.11/eks.html @@ -0,0 +1,732 @@ + + + + + + + + + + + + + Deploying Scylla on EKS | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on EKS

+

This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won’t work with different machine tiers. +It sets up the kubelets on EKS nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+
+# From inside the examples/eks folder
+cd examples/eks
+./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION"
+
+
+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

EKS Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+CLUSTER_NAME=scylla-demo
+
+
+
+
+

Creating an EKS cluster

+

For this guide, we’ll create an EKS cluster with the following:

+
    +
  • A NodeGroup of 3 i3-2xlarge Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having scylla-clusters toleration.

  • +
+
  - name: scylla-pool
+    instanceType: i3.2xlarge
+    desiredCapacity: 3
+    labels:
+      scylla.scylladb.com/node-type: scylla
+    taints:
+      role: "scylla-clusters:NoSchedule"
+    ssh:
+      allow: true
+    kubeletExtraConfig:
+      cpuManagerPolicy: static
+
+
+
    +
  • A NodeGroup of 4 c4.2xlarge Nodes to deploy cassandra-stress later on. These nodes will only accept pods having cassandra-stress toleration.

  • +
+
  - name: cassandra-stress-pool
+    instanceType: c4.2xlarge
+    desiredCapacity: 4
+    labels:
+      pool: "cassandra-stress-pool"
+    taints:
+      role: "cassandra-stress:NoSchedule"
+    ssh:
+      allow: true
+
+
+
    +
  • A NodeGroup of 1 i3.large Node, where the monitoring stack and operator will be deployed.

  • +
+
  - name: monitoring-pool
+    instanceType: i3.large
+    desiredCapacity: 1
+    labels:
+      pool: "monitoring-pool"
+    ssh:
+      allow: true
+
+
+
+
+
+

Prerequisites

+
+

Installing script third party dependencies

+

Script requires several dependencies:

+
    +
  • eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

  • +
  • kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/

  • +
+
+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting an EKS cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
eksctl delete cluster "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/exposing.html b/v1.11/exposing.html new file mode 100644 index 00000000000..b481d08ac89 --- /dev/null +++ b/v1.11/exposing.html @@ -0,0 +1,847 @@ + + + + + + + + + + + + + Exposing ScyllaCluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Exposing ScyllaCluster

+

This document explains how ScyllaDB Operator exposes ScyllaClusters in different network setups. +A ScyllaCluster can be exposed in various network configurations, independently to clients and nodes.

+

ScyllaClusters can be only exposed when the ScyllaDB version used version is >=2023.1 ScyllaDB Enterprise or >=5.2 ScyllaDB Open Source.

+
+

Expose Options

+

exposeOptions specifies configuration options for exposing ScyllaCluster’s. +A ScyllaCluster created without any exposeOptions is equivalent to the following:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: ClusterIP
+    broadcastOptions:
+      clients:
+        type: ServiceClusterIP
+      nodes:
+        type: ServiceClusterIP
+
+
+

The following sections cover what every field controls and what the configuration options are.

+
+

Node Service Template

+

nodeService serves as a template for a node-dedicated Service managed by the Scylla Operator for each node within a ScyllaCluster. +The properties of the Services depend on the selected type. +Additionally, there’s an option to define custom annotations, incorporated into each node’s Service, +which might be useful for further tweaking the Service properties or related objects.

+
+

Headless Type

+

For Headless type, Scylla Operator creates a Headless Service with a selector pointing to the particular node in the ScyllaCluster. +Such Service doesn’t provide any additional IP addresses, and the internal DNS record resolves to the PodIP of a node.

+

This type of Service is useful when ScyllaCluster nodes broadcast PodIPs to clients and other nodes.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: Headless
+
+
+
+
+

ClusterIP Type

+

For ClusterIP type, Scylla Operator creates a ClusterIP Service backed by a specific node in the ScyllaCluster.

+

These IP addresses are only routable within the same Kubernetes cluster, so it’s a good fit, if you don’t want to expose them to other networks.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: ClusterIP
+
+
+
+
+

LoadBalancer Type

+

For the LoadBalancer type, Scylla Operator generates a LoadBalancer Service that directs traffic to a specific node within the ScyllaCluster. +On platforms with support for external load balancers, this Service provisions one. +The accessibility of this load balancer’s address depends on the platform and any customizations made; in some cases it may be reachable from the internal network or public Internet.

+

LoadBalancer Service is a superset of ClusterIP Service, implying that each LoadBalancer Service also contains an allocated ClusterIP. +They can be configured using the following fields, which propagate to every node Service:

+
    +
  • externalTrafficPolicy

  • +
  • internalTrafficPolicy

  • +
  • loadBalancerClass

  • +
  • allocateLoadBalancerNodePorts

  • +
+

Check Kubernetes Service documentation to learn more about these options.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+     type: LoadBalancer
+     loadBalancerClass: my-custom-load-balancer-class
+
+
+
+
+
+
+

Broadcast Options

+

Broadcast options control what is the source of the address being broadcasted to clients and nodes. +It’s configured independently for clients and nodes because you may want to expose these two types of traffic on different networks. +Using different networks can help manage costs, reliability, latency, security policies or other metrics you care about.

+
+

PodIP Type

+

Address broadcasted to clients/nodes is taken from Pod. +By default, the address is taken from Pod’s status.PodIP field. +Because a Pod can use multiple address, you may want to provide source options by specifying podIP.source.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    broadcastOptions:
+       clients:
+         type: PodIP
+         podIP:
+           source: Status
+
+
+
+
+

ServiceClusterIP Type

+

Address broadcasted to clients or nodes is taken from spec.ClusterIP field of a node’s dedicated Service.

+

In order to configure it, the nodeService template must specify a Service having a ClusterIP assigned.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    broadcastOptions:
+       clients:
+         type: ServiceClusterIP
+
+
+
+
+

ServiceLoadBalancerIngress Type

+

Address broadcasted to clients/nodes is taken from the node dedicated Service, from status.ingress[0].ipAddress or status.ingress[0].hostname field.

+

In order to configure it, the nodeService template must specify the LoadBalancer Service.

+

Example:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    broadcastOptions:
+       clients:
+         type: ServiceLoadBalancerIngress
+         podIP:
+           source: Status
+
+
+
+
+
+
+

Deployment Examples

+

The following section contains several specific examples of various network scenarios and explains how nodes and clients communicate with one another.

+
+

In-cluster only

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: ClusterIP
+    broadcastOptions:
+      clients:
+        type: ServiceClusterIP
+      nodes:
+        type: ServiceClusterIP
+
+
+

Both client and nodes are deployed within the same Kubernetes cluster. +They talk through ClusterIP addresses taken from the Service. +Because ClusterIP Services are only routable within the same Kubernetes cluster, this cluster won’t be reachable from outside.

+

ClusterIPs

+
+
+

In-cluster node-to-node, VPC clients-to-nodes

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: ClusterIP
+    broadcastOptions:
+      clients:
+        type: PodIP
+      nodes:
+        type: ServiceClusterIP
+
+
+

In this scenario, we assume that the Pod IP subnet is routable within a VPC. +Clients within the VPC network can communicate directly with ScyllaCluster nodes using PodIPs. +Nodes communicate with each other exclusively within the same Kubernetes cluster.

+

PodIPs

+
+
+

Multi VPC

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: Headless
+    broadcastOptions:
+      clients:
+        type: PodIP
+      nodes:
+        type: PodIP
+
+
+

In this scenario, we set up two separate Kubernetes clusters in distinct VPCs. +These VPCs are interconnected to facilitate inter-VPC connectivity. +We operate on the assumption that the Pod IP subnet is routable within each VPC.

+

Both ScyllaClusters use the same exposeOptions, nodes broadcast their Pod IP addresses, enabling them to establish connections with one another. +****Check other documentation pages to know how to connect two ScyllaClusters into one logical cluster.

+

Clients, whether deployed within the same Kubernetes cluster or within a VPC, have the capability to reach nodes using their Pod IPs. +Since there is no requirement for any address other than the Pod IP, the Headless service type is sufficient.

+

MultiVPC

+
+
+

Internet

+

ScyllaCluster definition:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+spec:
+  exposeOptions:
+    nodeService:
+      type: LoadBalancer
+    broadcastOptions:
+      clients:
+        type: ServiceLoadBalancerIngress
+      nodes:
+        type: ClusterIP 
+
+
+

We assume that a Kubernetes cluster has been deployed in a cloud provider environment that supports external load balancers. +By specifying the LoadBalancer type in the nodeService template, the Scylla Operator generates a dedicated LB Service for each node. +The cloud provider then establishes an external load balancer with an internet-accessible address. +ScyllaDB nodes broadcast this external address to clients, enabling drivers to connect and discover other nodes. +Since all ScyllaDB nodes reside within the same Kubernetes cluster, there is no need to route traffic through the internet. +Consequently, the nodes are configured to communicate via ClusterIP, which is also accessible within LoadBalancer Services.

+

Internet

+
+

Other more complex scenarios can be built upon these simple ones.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/generic.html b/v1.11/generic.html new file mode 100644 index 00000000000..d78219876b2 --- /dev/null +++ b/v1.11/generic.html @@ -0,0 +1,956 @@ + + + + + + + + + + + + + Deploying Scylla on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on a Kubernetes Cluster

+

This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment:

+ +
+

Prerequisites

+ +
+
+

Running locally

+

Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and Minikube makes it a breeze.

+

We need to give minikube a little bit more resources than default so start minikube like this:

+
minikube start --cpus=6
+
+
+

Then make kubectl aware of this local installation like this:

+
eval $(minikube docker-env)
+
+
+
+
+

Download Scylla Operator

+

In this guide you will be using the examples and manifests from Scylla Operator repository, so start off by cloning it to your local machine.

+
git clone git@github.com:scylladb/scylla-operator.git
+cd scylla-operator
+
+
+
+
+

Deploy Cert Manager

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

This will install Cert Manager to provision a self-signed certificate.

+

Once it’s deployed, wait until Cert Manager is ready:

+
kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io
+kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook
+
+
+
+
+

Deploy Scylla Operator

+

Deploy the Scylla Operator using the following commands:

+
kubectl apply -f examples/common/operator.yaml
+
+
+

This will install the operator in namespace scylla-operator. +Wait until it’s ready:

+
kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
+kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
+
+
+

If you want to check the logs of the operator you can do so with:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+
+
+

Create and Initialize a Scylla Cluster

+

Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the clusters.scylla.scylladb.com resource. +Some of that resource’s values are configurable, so feel free to browse cluster.yaml and tweak the settings to your liking. +Full details for all the configuration options can be found in the Scylla Cluster CRD documentation.

+

When you are ready to create a Scylla cluster, simply run:

+
kubectl create -f examples/generic/cluster.yaml
+
+
+

We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment.

+
kubectl -n scylla get ScyllaCluster
+
+
+

Checking the pods that are created is as easy as:

+
kubectl -n scylla get pods
+
+
+

The output should be something like:

+
NAME                                    READY   STATUS    RESTARTS   AGE
+simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          9m49s
+simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          7m43s
+simple-cluster-us-east-1-us-east-1a-2   2/2     Running   0          6m46s
+
+
+

It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER as specified in cluster.yaml.

+

In the above example we have the following properties:

+
    +
  • CLUSTER_NAME: simple-cluster

  • +
  • DATACENTER_NAME: us-east-1

  • +
  • RACK_NAME: us-east-1a

  • +
  • INSTANCE_NUMBER: An automatically generated number attached to the pod name.

  • +
+

We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want.

+

To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in cluster.yaml:

+
kubectl -n scylla get pod -l app=scylla
+
+
+

You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run:

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+

Checking the logs of the running scylla instances can be done like this:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla
+
+
+
+

Configure host networking

+

To squeeze the most out of your deployment it is sometimes necessary to employ host networking. +To enable this the CRD allows for specifying a network parameter as such:

+
version: 4.0.0
+  agentVersion: 2.0.2
+  cpuset: true
+  network:
+    hostNetworking: true
+
+
+

This will result in hosts network to be used for the Scylla Stateful Set deployment.

+
+
+

Configure container kernel parameters

+

Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property sysctls that is a list of the desired key-value pairs to set.

+

For example: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls tofs.aio-max-nr=N.

+
spec:
+  sysctls:
+  - "fs.aio-max-nr=2097152"
+
+
+
+
+

Deploying Alternator

+

The operator is also capable of deploying Alternator instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the cluster.yaml file from this:

+
spec:
+  version: 4.0.0
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

to this:

+
spec:
+  version: 4.0.0
+  alternator:
+    port: 8000
+    writeIsolation: only_rmw_uses_lwt
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

You can specify whichever port you want.

+

You must provide desired write isolation, supported values are: “always”, “forbid_rmw”, “only_rmw_uses_lwt”. +Difference between those isolation levels can be found in Scylla Alternator documentation.

+

Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alternator cluster.

+
+
+
+

Accessing the Database

+
    +
  • From kubectl:

  • +
+

To get a cqlsh shell in your new Cluster:

+
kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh
+> DESCRIBE KEYSPACES;
+
+
+
    +
  • From inside a Pod:

  • +
+

When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service’s name follows the convention <cluster-name>-client. +You can see this Service in your cluster by running:

+
kubectl -n scylla describe service simple-cluster-client
+
+
+

Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here’s an example using the Python Driver:

+
from cassandra.cluster import Cluster
+
+cluster = Cluster(['simple-cluster-client.scylla.svc'])
+session = cluster.connect()
+
+
+

If you are running the Alternator you can access the API on the port you specified using plain http.

+
+
+

Configure Scylla

+

The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called scylla.yaml that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration.

+
    +
  • Create a ConfigMap the default name that the operator uses is scylla-config:

  • +
+
kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml
+
+
+
    +
  • Wait for the mount to propagate and then restart the cluster:

  • +
+
kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a
+
+
+
    +
  • The new config should be applied automatically by the operator, check the logs to be sure.

  • +
+

Configuring cassandra-rackdc.properties is done by adding the file to the same mount as scylla.yaml.

+
kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f -
+
+
+

The operator will then apply the overridable properties prefer_local and dc_suffix if they are available in the provided mounted file.

+
+

Note

+

If you want to enable authentication, you first need to adjust system_auth keyspace replication factor to the number of nodes in the datacenter via cqlsh. It allows you to ensure that the user’s information is kept highly available for the cluster. If system_auth is not equal to the number of nodes and a node fails, the user whose information is on that node will be denied access. +For production environments only use NetworkTopologyStrategy.

+
kubectl -n scylla exec -it pods/simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -e "ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'us-east-1' : <replication_factor>};"
+
+
+

You can read more about enabling authentication in the Enable authentication section of ScyllaDB’s documentation.

+
+
+
+

Configure Scylla Manager Agent

+

The operator creates a second container for each scylla instance that runs Scylla Manager Agent. +This container serves as a sidecar and it’s the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups.

+

To configure the agent you just create a new secret called scylla-agent-config-secret and populate it with the contents in the scylla-manager-agent.yaml file like this:

+
kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml
+
+
+

See Scylla Manager Agent configuration for a complete reference of the Scylla Manager agent config file.

+
+

Scylla Manager Agent auth token

+

Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it’s empty. +To check which value is being used, decode content of <cluster-name>-auth-token secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart.

+
+
+
+

Set up monitoring

+

To set up monitoring using Prometheus and Grafana follow this guide.

+
+
+

Scale a ScyllaCluster

+

The operator supports adding new nodes to existing racks, adding new racks to the cluster, as well as removing both single nodes and entire racks. To introduce the changes, edit the cluster with:

+
kubectl -n scylla edit scyllaclusters.scylla.scylladb.com/simple-cluster
+
+
+
    +
  • To modify the number of nodes in a rack, update the members field of the selected rack to a desired value.

  • +
  • To add a new rack, append it to the .spec.datacenter.racks list. Remember to choose a unique rack name for the new rack.

  • +
  • To remove a rack, first scale it down to zero nodes, and then remove it from .spec.datacenter.racks list.

  • +
+

Having edited and saved the yaml, you can check your cluster’s Status and Events to retrieve information about what’s happening:

+
kubectl -n scylla describe scyllaclusters.scylla.scylladb.com/simple-cluster
+
+
+
+

Note

+

If you have configured ScyllaDB with authenticator set to PasswordAuthenticator, you need to manually configure the replication factor of the system_auth keyspace with every scaling operation.

+
kubectl -n scylla exec -it pods/simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -u <username> -p <password> -e "ALTER KEYSPACE system_auth WITH REPLICATION = {'class' : 'NetworkTopologyStrategy', 'us-east-1' : <new_replication_factor>};"
+
+
+

It is recommended to set system_auth replication factor to the number of nodes in each datacenter.

+
+
+
+

Benchmark with cassandra-stress

+

After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster.

+
+

Because cassandra-stress doesn’t scale well to multiple cores, we use multiple jobs with a small core count for each

+
+
# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each.
+# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec.
+hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000
+kubectl apply -f scripts/cassandra-stress.yaml
+
+
+

Make sure you set the proper arguments in case you have altered things such as name or namespace.

+
./hack/cass-stress-gen.py -h
+usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT]
+                          [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR]
+
+Generate cassandra-stress job templates for Kubernetes.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --num-jobs NUM_JOBS   number of Kubernetes jobs to generate - defaults to 1
+  --name NAME           name of the generated yaml file - defaults to cassandra-stress
+  --namespace NAMESPACE
+                        namespace of the cassandra-stress jobs - defaults to "default"
+  --scylla-version SCYLLA_VERSION
+                        version of scylla server to use for cassandra-stress - defaults to 4.0.0
+  --host HOST           ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc
+  --cpu CPU             number of cpus that will be used for each job - defaults to 1
+  --memory MEMORY       memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu
+  --ops OPS             number of operations for each job - defaults to 10000000
+  --threads THREADS     number of threads used for each job - defaults to 50 * cpu
+  --limit LIMIT         rate limit for each job - defaults to no rate-limiting
+  --connections-per-host CONNECTIONS_PER_HOST
+                        number of connections per host - defaults to number of cpus
+  --print-to-stdout     print to stdout instead of writing to a file
+  --nodeselector NODESELECTOR
+                        nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla
+
+
+

While the benchmark is running, open up Grafana and take a look at the monitoring metrics.

+

After the Jobs finish, clean them up with:

+
kubectl delete -f scripts/cassandra-stress.yaml
+
+
+
+
+

Clean Up

+

To clean up all resources associated with this walk-through, you can run the commands below.

+

NOTE: this will destroy your database and delete all of its associated data.

+
kubectl delete -f examples/generic/cluster.yaml
+kubectl delete -f examples/common/operator.yaml
+kubectl delete -f examples/common/cert-manager.yaml
+
+
+
+
+

Troubleshooting

+

If the cluster does not come up, the first step would be to examine the operator’s logs:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+

If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/genindex.html b/v1.11/genindex.html new file mode 100644 index 00000000000..56eeb4b790d --- /dev/null +++ b/v1.11/genindex.html @@ -0,0 +1,561 @@ + + + + + + + + + + + + + Index | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ + + +
+ + + + + +
+ + +
+ +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/gke.html b/v1.11/gke.html new file mode 100644 index 00000000000..e7adee21d15 --- /dev/null +++ b/v1.11/gke.html @@ -0,0 +1,770 @@ + + + + + + + + + + + + + Deploying Scylla on GKE | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on GKE

+

This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+GCP_USER=$(gcloud config list account --format "value(core.account)")
+GCP_PROJECT=$(gcloud config list project --format "value(core.project)")
+GCP_ZONE=us-west1-b
+
+# From inside the examples/gke folder
+cd examples/gke
+./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE"
+
+# Example:
+# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b
+
+
+

:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region.

+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

Google Kubernetes Engine Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
GCP_USER=$( gcloud config list account --format "value(core.account)" )
+GCP_PROJECT=$( gcloud config list project --format "value(core.project)" )
+GCP_REGION=us-west1
+GCP_ZONE=us-west1-b
+CLUSTER_NAME=scylla-demo
+CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" )
+
+
+
+
+

Creating a GKE cluster

+

First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called systemconfig.yaml with the following content:

+
kubeletConfig:
+  cpuManagerPolicy: static
+
+
+

Then we’ll create a GKE cluster with the following:

+
    +
  1. A NodePool of 2 n1-standard-8 Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes.

    +
    gcloud container \
    +clusters create "${CLUSTER_NAME}" \
    +--cluster-version "${CLUSTER_VERSION}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-8" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--image-type "UBUNTU_CONTAINERD" \
    +--system-config-from-file=systemconfig.yaml \
    +--enable-stackdriver-kubernetes \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  2. +
  3. A NodePool of 2 n1-standard-32 Nodes to deploy cassandra-stress later on.

    +
    gcloud container --project "${GCP_PROJECT}" \
    +node-pools create "cassandra-stress-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--zone "${GCP_ZONE}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--node-taints role=cassandra-stress:NoSchedule \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  4. +
  5. A NodePool of 4 n1-standard-32 Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local NVMe SSDs attached, which are provided as raw block devices. It is important to disable autoupgrade and autorepair. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it’s better to handle upgrades manually, with more control over the process and error handling.

    +
    gcloud container \
    +node-pools create "scylla-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "4" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--local-nvme-ssd-block count="8" \
    +--node-taints role=scylla-clusters:NoSchedule \
    +--node-labels scylla.scylladb.com/node-type=scylla \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  6. +
+
+
+

Setting Yourself as cluster-admin

+
+

(By default GKE doesn’t give you the necessary RBAC permissions)

+
+

Get the credentials for your new cluster

+
gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}"
+
+
+

Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission container.clusterRoleBindings.create. +The easiest way to obtain this permission is to enable the Kubernetes Engine Admin role for your user in the GCP IAM web interface.

+
kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}"
+
+
+
+
+
+

Prerequisites

+
+

Setting up nodes for ScyllaDB

+

ScyllaDB, except when in developer mode, requires storage with XFS filesystem. The local NVMes from the cloud provider usually come as individual devices. To use their full capacity together, you’ll first need to form a RAID array from those disks. +NodeConfig performs the necessary RAID configuration and XFS filesystem creation, as well as it optimizes the nodes. You can read more about it in Performance tuning section of ScyllaDB Operator’s documentation.

+

Deploy NodeConfig to let it take care of the above operations:

+
kubectl apply --server-side -f examples/gke/nodeconfig-alpha.yaml
+
+
+
+
+

Deploying Local Volume Provisioner

+

Afterwards, deploy ScyllaDB’s Local Volume Provisioner, capable of dynamically provisioning PersistentVolumes for your ScyllaDB clusters on mounted XFS filesystems, earlier created over the configured RAID0 arrays.

+
kubectl -n local-csi-driver apply --server-side -f examples/common/local-volume-provisioner/local-csi-driver/
+kubectl apply --server-side -f examples/common/local-volume-provisioner/storageclass_xfs.yaml
+
+
+
+
+
+

Deploy Scylla cluster

+

In order for the example to work you need to modify the cluster definition in the following way:

+
sed -i "s/<gcp_region>/${GCP_REGION}/g;s/<gcp_zone>/${GCP_ZONE}/g" examples/gke/cluster.yaml
+
+
+

This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created.

+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to install the operator and launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting a GKE cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/helm.html b/v1.11/helm.html new file mode 100644 index 00000000000..61de275db36 --- /dev/null +++ b/v1.11/helm.html @@ -0,0 +1,926 @@ + + + + + + + + + + + + + Deploying Scylla stack using Helm Charts | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla stack using Helm Charts

+

In this example we will install Scylla stack on Kubernetes. This includes the following components:

+
    +
  • Scylla Operator

  • +
  • Scylla Manager

  • +
  • Scylla

  • +
+

We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator.

+
+

Prerequisites

+
    +
  • Kubernetes 1.16+

  • +
  • Helm 3+

  • +
+
+
+

TL;DR

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+kubectl apply -f examples/common/cert-manager.yaml 
+helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator
+helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager
+helm install scylla scylla/scylla --create-namespace --namespace scylla
+
+
+
+
+

Deploy Cert Manager

+

This step is optional if you want to use your own certificate. +If you don’t have one, make sure to not disable autogeneration using Scylla Operator Helm Chart.

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

Once it’s deployed, wait until all Cert Manager pods will enter into Running state:

+
kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s
+
+
+
+
+

Helm Chart repository

+

To install Scylla Helm Chart repository execute the following commands:

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+
+
+

Then you can search through repository, it should contain at least three Helm charts:

+
helm search repo scylla
+NAME                   CHART VERSION   APP VERSION     DESCRIPTION                                       
+scylla/scylla          1.0.1           v1.0.1          Scylla is a close-to-the-hardware rewrite of Ca...
+scylla/scylla-manager  1.0.1           v1.0.1          Scylla Manager automates database operations.     
+scylla/scylla-operator 1.0.1           v1.0.1          Scylla Operator is a Kubernetes Operator for ma...
+
+
+

All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit.

+
+
+

Scylla Operator Chart

+

This chart is very simple, most interesting customizable fields are image, resources and webhook. +All others can be looked up in Chart source in Scylla Operator repository.

+
+

image

+

Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change pullPolicy if default one does not +fullfill your needs. In Kubernetes documentation you +can read more about different pull policies.

+

Image URL will be composed based on these fields in follwing pattern: +repository/scylla-operator:tag

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+
+
+

resources

+

You can customize how much resources will be allocated for Operator pods via resource field:

+
resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 32Mi
+
+
+

To read more about resource specification, follow Kubernetes documentation.

+
+
+

webhook

+

Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate.

+

createSelfSignedCertificate specifies whether a self-signed certificate should be created using Cert Manager +certificateSecretName: name of a secret containing custom certificate.

+
webhook:
+  createSelfSignedCertificate: true
+  certificateSecretName: ""
+
+
+
+
+

Customization

+

You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values.

+

You can find an example in Scylla Operator repository under examples/helm/values.operator.yaml

+
+
+

Installation

+

To deploy Scylla Operator using customized values file execute the following:

+
helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator
+
+
+
+
+
+

Scylla Helm Chart

+

Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it.

+
+

Customization

+

Versions of images used in the cluster can be set via scyllaImage and agentImage

+
scyllaImage:
+  repository: scylladb/scylla
+  tag: 4.3.0
+
+agentImage:
+  repository: scylladb/scylla-manager-agent
+  tag: 2.2.1
+
+
+

A minimal Scylla cluster can be expressed as:

+
datacenter: us-east-1
+racks:
+- name: us-east-1b
+  members: 2
+  storage:
+    capacity: 5G
+  resources:
+    limits:
+      cpu: 1
+      memory: 1Gi
+    requests:
+      cpu: 1
+      memory: 1Gi
+
+
+

Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory.

+

For other customizable fields, please refer to ScyllaCluster CRD definition. +CRD Rack Spec and Helm Chart Rack should have the same fields.

+
+
+

Installation

+

To deploy Scylla cluster using customzied values file execute the following command:

+
helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla
+
+
+

Scylla Operator will provision this cluster on your K8s environment.

+
+
+
+

Scylla Manager Helm Chart

+

Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster.

+

To read more about Scylla Manager see Manager guide.

+
+

Scylla Manager

+

To set version of used Scylla Manager you can use image field:

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: 2.2.1
+
+
+

To control how many resources are allocated for Scylla Manager use resource field:

+
resources:
+  limits:
+    cpu: 500m
+    memory: 500Mi
+  requests:
+    cpu: 500m
+    memory: 500Mi
+
+
+
+
+

Scylla Manager Controller

+

Similarly Scylla Manager Controller image can be customized:

+
controllerImage:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+

And allocated resources:

+
controllerResources:
+  limits:
+    cpu: 100m
+    memory: 30Mi
+  requests:
+    cpu: 100m
+    memory: 20Mi
+
+
+
+
+

Scylla

+

To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It’s definition should land as a scylla field.

+
+
+

Customization

+

All others customizable fields can be looked up in Chart source in Scylla Operator repository.

+
+
+

Installation

+

To deploy Scylla Manager using customized values file execute the following command:

+
helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager
+
+
+
+
+
+

Results

+

Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn’t it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces.

+

Scylla Operator:

+
$ kubectl -n scylla-operator get all
+
+NAME                                   READY   STATUS    RESTARTS   AGE
+pod/scylla-operator-5dbcb54f5c-vjm4m   1/1     Running   0          51s
+pod/scylla-operator-5dbcb54f5c-wfjbw   1/1     Running   0          51s
+
+NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
+service/scylla-operator-webhook   ClusterIP   10.105.207.130   <none>        443/TCP   51s
+
+NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-operator   2/2     2            2           51s
+
+NAME                                         DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-operator-5dbcb54f5c   2         2         2       51s
+
+
+

Operator is running!

+

Scylla Manager:

+
$ kubectl -n scylla-manager get all 
+
+NAME                                             READY   STATUS    RESTARTS   AGE
+pod/scylla-manager-669db64dd-bcm4v               1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-drbth   1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-rhwqx   1/1     Running   0          89s
+
+NAME                            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
+service/scylla-manager          ClusterIP   10.105.231.53   <none>        80/TCP,5090/TCP     89s
+service/scylla-manager-client   ClusterIP   None            <none>        9180/TCP,5090/TCP   89s
+
+NAME                                        READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-manager              1/1     1            1           89s
+deployment.apps/scylla-manager-controller   2/2     2            2           89s
+
+NAME                                                   DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-manager-669db64dd               1         1         1       89s
+replicaset.apps/scylla-manager-controller-844ccc56c4   2         2         2       89s
+
+
+

Good to go, ready to serve!

+

Scylla itself:

+
$ kubectl -n scylla get all        
+
+NAME                                READY   STATUS    RESTARTS   AGE
+pod/scylla-us-east-1-us-east-1b-0   2/2     Running   0          5m58s
+pod/scylla-us-east-1-us-east-1b-1   2/2     Running   0          4m29s
+
+NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
+service/scylla-client                   ClusterIP   None           <none>        9180/TCP,5090/TCP                                                 5m59s
+service/scylla-us-east-1-us-east-1b-0   ClusterIP   10.43.149.92   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   5m58s
+service/scylla-us-east-1-us-east-1b-1   ClusterIP   10.43.49.0     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   4m29s
+
+NAME                                           READY   AGE
+statefulset.apps/scylla-us-east-1-us-east-1b   2/2     5m59s
+
+
+

Two running nodes, exactly what we were asking for.

+
+
+

Monitoring

+

To spin up a Prometheus monitoring refer to monitoring guide.

+

Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor:

+
serviceMonitor:
+  create: false
+
+
+

Change create to true and update your current deployment using:

+
helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml
+
+
+

Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics.

+
+
+

Cleanup

+

To remove these applications you can simply uninstall them using Helm CLI:

+
helm uninstall scylla -n scylla
+helm uninstall scylla-manager -n scylla-manager
+helm uninstall scylla-operator -n scylla-operator
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/index.html b/v1.11/index.html new file mode 100644 index 00000000000..1c194cc92b5 --- /dev/null +++ b/v1.11/index.html @@ -0,0 +1,605 @@ + + + + + + + + + + + + + Scylla Operator Documentation | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Operator Documentation

+
+
+

Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades.

+_images/logo.png +

For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University.

+

scylla-operator is a Kubernetes Operator for managing Scylla clusters.

+

Currently it supports:

+
    +
  • Deploying multi-zone clusters

  • +
  • Scaling up or adding new racks

  • +
  • Scaling down

  • +
  • Monitoring with Prometheus and Grafana

  • +
  • Integration with Scylla Manager

  • +
  • Dead node replacement

  • +
  • Version Upgrade

  • +
  • Backup

  • +
  • Repairs

  • +
  • Autohealing

  • +
+

Choose a topic to begin:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/known-issues.html b/v1.11/known-issues.html new file mode 100644 index 00000000000..fa1b4022108 --- /dev/null +++ b/v1.11/known-issues.html @@ -0,0 +1,602 @@ + + + + + + + + + + + + + Known issues | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Known issues

+
+

Scylla Manager does not boot up on Minikube

+

If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for TRUNCATE queries.

+
+
+

TRUNCATE queries does not work on Minikube

+

The TRUNCATE queries requires hairpinning to be enabled. On minikube this is disabled by default.

+

To fix it execute the following command:

+
minikube ssh sudo ip link set docker0 promisc on
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/manager.html b/v1.11/manager.html new file mode 100644 index 00000000000..f43b0b9dfd1 --- /dev/null +++ b/v1.11/manager.html @@ -0,0 +1,813 @@ + + + + + + + + + + + + + Deploying Scylla Manager on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ Menu +
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Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla Manager on a Kubernetes Cluster

+

Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way.

+

Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager Proprietary Software License Agreement for details.

+
+

Prerequisites

+ +
+
+

Architecture

+

Scylla Manager in K8s consist of:

+
    +
  • Dedicated Scylla Cluster

    +

    Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace.

    +
  • +
  • Scylla Manager Controller

    +

    Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states.

    +
      +
    1. What user wants - task definition in CRD.

    2. +
    3. What Controller registered - Task name to Task ID mapping - CRD status.

    4. +
    5. Scylla Manager task listing - internal state of Scylla Manager.

    6. +
    +

    When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling.

    +
  • +
  • Scylla Manager

    +

    Regular Scylla Manager, the same used in cloud and bare metal deployments.

    +
  • +
+
+
+

Deploy Scylla Manager

+

Deploy the Scylla Manager using the following commands:

+
kubectl apply -f examples/common/manager.yaml
+
+
+

This will install the Scylla Manager in the scylla-manager namespace. +You can check if the Scylla Manager is up and running with:

+
kubectl -n scylla-manager get pods
+NAME                                               READY   STATUS    RESTARTS   AGE
+scylla-manager-cluster-manager-dc-manager-rack-0   2/2     Running   0          37m
+scylla-manager-controller-0                        1/1     Running   0          28m
+scylla-manager-scylla-manager-7bd9f968b9-w25jw     1/1     Running   0          37m
+
+
+

As you can see there are three pods:

+
    +
  • scylla-manager-cluster-manager-dc-manager-rack-0 - is a single node Scylla cluster.

  • +
  • scylla-manager-controller-0 - Scylla Manager Controller.

  • +
  • scylla-manager-scylla-manager-7bd9f968b9-w25jw - Scylla Manager.

  • +
+

To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command:

+
kubectl -n scylla-manager logs scylla-manager-controller-0
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+
+
+

To check logs of Scylla Manager itself, use following command:

+
kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+
+
+

If there are no errors in the logs, let’s spin a Scylla Cluster.

+
+
+

Cluster registration

+

When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster.

+

See generic tutorial to spawn your cluster.

+

Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager.

+

Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager.

+
kubectl -n scylla describe Cluster
+
+[...]
+Status:
+ Manager Id:  d1d532cd-49f2-4c97-9263-25126532803b
+ Racks:
+   us-east-1a:
+     Members:        3
+     Ready Members:  3
+     Version:        4.0.0
+
+
+

You can use this ID to talk to Scylla Manager using sctool CLI installed in Scylla Manager Pod. +You can also use Cluster name in namespace/cluster-name format.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator).

+

In this task listing we can see CQL and REST healthchecks.

+
+
+

Task scheduling

+

You can either define tasks prior Cluster creation, or for existing Cluster. +Let’s edit already running cluster definition to add repair and backup task.

+
kubectl -n scylla edit Cluster simple-cluster
+
+
+

Add following task definition to Cluster spec:

+
  repairs:
+    - name: "users repair"
+      keyspace: ["users"]
+      interval: "1d"
+  backups:
+    - name: "weekly backup"
+      location: ["s3:cluster-backups"]
+      retention: 3
+      interval: "7d"
+    - name: "daily backup"
+      location: ["s3:cluster-backups"]
+      retention: 7
+      interval: "1d"
+
+
+

For full task definition configuration consult Scylla Cluster CRD.

+

Note: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up.

+

Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372                 │ -L s3:cluster-backups  --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d)  │ NEW    │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a                 │                                      │ 23 Sep 20 14:38:42 CEST        │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly.

+

To check progress of run you can use following command:

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a
+Status:         RUNNING
+Start time:     23 Sep 20 14:38:42 UTC
+Duration:       13s
+Progress:       2.69%
+Datacenters:
+  - us-east-1
++--------------------+-------+
+| system_auth        | 8.06% |
+| system_distributed | 0.00% |
+| system_traces      | 0.00% |
++--------------------+-------+
+
+
+

Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing.

+
+
+

Clean Up

+

To clean up all resources associated with Scylla Manager, you can run the commands below.

+

NOTE: this will destroy your Scylla Manager database and delete all of its associated data.

+
kubectl delete -f examples/common/manager.yaml
+
+
+
+
+

Troubleshooting

+

Manager is not running

+

If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs:

+
kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller
+kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

My task wasn’t scheduled

+

If your task wasn’t scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs.

+

Example:

+

Following status describes error when backup task cannot be scheduled, due to lack of access to bucket:

+
Status:
+  Backups:
+    Error:     create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug"
+    Id:        00000000-0000-0000-0000-000000000000
+    Interval:  0
+    Location:
+      s3:manager-test
+    Name:         adhoc backup
+    Num Retries:  3
+    Retention:    3
+    Start Date:   now
+  Manager Id:     2b9dbe8c-9daa-4703-a66d-c29f63a917c8
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.0.0
+
+
+

Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status.

+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/migration.html b/v1.11/migration.html new file mode 100644 index 00000000000..70a4c58beec --- /dev/null +++ b/v1.11/migration.html @@ -0,0 +1,748 @@ + + + + + + + + + + + + + Version migrations | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Version migrations

+
+

v0.3.0 -> v1.0.0 migration

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common kind +which is easier to disambiguate (ScyllaCluster). +This change is backward incompatible, which means manual migration is needed.

+

This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the upgrade guide where full deletion is requested, this procedure shouldn’t cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn’t run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first.

+

Read the whole procedure and make sure you understand what is going on before executing any of the commands!

+

In case of any issues or questions regarding this procedure, you’re welcomed on our Scylla Users Slack +on #kubernetes channel.

+
+
+

Procedure

+
    +
  1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +

    All below commands will use scylla namespace and simple-cluster as a cluster name.

    +
  2. +
  3. Make sure you’re using v1.0.0 tag:

    +
    git checkout v1.0.0
    +
    +
    +
  4. +
  5. Upgrade your cert-manager to v1.0.0. If you installed it from a static file from this repo, simply execute the following:

    +
     kubectl apply -f examples/common/cert-manager.yaml
    +
    +
    +

    If your cert-manager was installed in another way, follow official instructions on cert-manager website.

    +
  6. +
  7. examples/common/operator.yaml file contains multiple resources. Extract only CustomResourceDefinition to separate file.

  8. +
  9. Install v1.0.0 CRD definition from file created in the previous step:

    +
    kubectl apply -f examples/common/crd.yaml
    +
    +
    +
  10. +
  11. Save your existing simple-cluster Cluster definition to a file:

    +
    kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml
    +
    +
    +
  12. +
  13. Migrate Kind and ApiVersion to new values using:

    +
    sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml
    +sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml
    +
    +
    +
  14. +
  15. Install migrated CRD instance

    +
    kubectl apply -f existing-cluster.yaml
    +
    +
    +

    At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator.

    +
  16. +
  17. Get UUID of newly created ScyllaCluster resource:

    +
    kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}"
    +
    +12a3678d-8511-4c9c-8a48-fa78d3992694
    +
    +
    +

    Save output UUID somewhere, it will be referred as <new-cluster-uid> in commands below.

    +

    Depending on your shell, you might get additional ‘%’ sign at the end of UUID, make sure to remove it!

    +
  18. +
  19. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters:

    +
    kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]'
    +
    +
    +

    Amend role name according to your cluster name, it should look like <scylla-cluster-name>-member.

    +
  20. +
  21. Get a list of all Services associated with your cluster. First get list of all services:

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          109m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   108m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   106m
    +
    +
    +
  22. +
  23. For each service, change its ownerReference to point to new CRD instance:

    +
     kubectl -n scylla patch svc <cluster-svc-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-svc-name> with Service name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  24. +
  25. Get a list of all Services again to see if none was deleted. Check also “Age” column, it shouldn’t be lower than previous result.

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          110m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   110m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   107m
    +
    +
    +
  26. +
  27. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  28. +
  29. For each StatefulSet from previous step, change its ownerReference to point to new CRD instance.

    +
     kubectl -n scylla patch sts <cluster-sts-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  30. +
  31. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. +Checkout v0.3.0 version, and remove Scylla Operator, and old CRD:

    +
     git checkout v0.3.0
    + kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  32. +
  33. Checkout v1.0.0, and install upgraded Scylla Operator:

    +
     git checkout v1.0.0
    + kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  34. +
  35. Wait until Scylla Operator boots up:

    +
     kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s
    +
    +
    +
  36. +
  37. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  38. +
  39. For each StatefulSet from previous step, change its sidecar container image to v1.0.0, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one.

    +
    kubectl -n scylla patch sts <cluster-sts> --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +kubectl -n scylla rollout status sts <cluster-sts>
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name.

    +
  40. +
  41. If you’re using Scylla Manager, bump Scylla Manager Controller image to v1.0.0

    +
     kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +
    +
    +
  42. +
  43. Your Scylla cluster is now migrated to v1.0.0.

  44. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/monitoring.html b/v1.11/monitoring.html new file mode 100644 index 00000000000..5edc576d89c --- /dev/null +++ b/v1.11/monitoring.html @@ -0,0 +1,795 @@ + + + + + + + + + + + + + Monitoring | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Monitoring

+

Scylla Operator 1.8 introduced a new API resource ScyllaDBMonitoring, allowing users to deploy a managed monitoring +setup for their Scylla Clusters.

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: ScyllaDBMonitoring
+metadata:
+  name: example
+spec:
+  type: Platform
+  endpointsSelector:
+    matchLabels:
+      app.kubernetes.io/name: scylla
+      scylla-operator.scylladb.com/scylla-service-type: identity
+      scylla/cluster: replace-with-your-scyllacluster-name
+  components:
+    prometheus:
+      storage:
+        volumeClaimTemplate:
+          spec:
+            resources:
+              requests:
+                storage: 1Gi
+    grafana:
+      exposeOptions:
+        webInterface:
+          ingress:
+            ingressClassName: haproxy
+            dnsDomains:
+            - test-grafana.test.svc.cluster.local
+            annotations:
+              haproxy-ingress.github.io/ssl-passthrough: "true"
+
+
+

For details, refer to the below command:

+
$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1
+
+
+
+

Deploy managed monitoring

+

Note: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions.

+
+

Requirements

+

Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see:

+ +

The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps.

+
+

Deploy Prometheus Operator

+

Deploy Prometheus Operator using kubectl:

+
$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator
+
+
+
+
Wait for Prometheus Operator to roll out
+
$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator
+deployment "prometheus-operator" successfully rolled out
+
+
+
+
+
+

Deploy HAProxy Ingress

+

Deploy HAProxy Ingress using kubectl:

+
$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress
+
+
+
+
Wait for HAProxy Ingress to roll out
+
$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress
+deployment "haproxy-ingress" successfully rolled out
+
+
+
+
+
+
+

Deploy ScyllaDBMonitoring

+

First, update the endpointsSelector in examples/monitoring/v1alpha1/scylladbmonitoring.yaml with a label +matching your ScyllaCluster instance name.

+

Deploy the monitoring setup using kubectl:

+
$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml
+
+
+

Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources.

+
+

Wait for ScyllaDBMonitoring to roll out

+
$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+
+
+
+

Wait for Prometheus to roll out

+
$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example
+statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb...
+
+
+
+
+

Wait for Grafana to roll out

+
$ kubectl rollout status --timeout=5m deployments.apps/example-grafana
+deployment "example-grafana" successfully rolled out
+
+
+
+
+
+

Accessing Grafana

+

For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller’s IP address but most clients and tools allow setting the SNI field manually.

+
+
+

Prerequisites

+

To access Grafana, you first need to collect the serving CA and the credentials.

+
$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )"
+$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )"
+$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )"
+
+
+
+
+

Connecting through Ingress using a resolvable domain

+

In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like *.app.mydomain pointing to the Ingress controller’s external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller’s A record.

+

Note: The ScyllaDBMonitoring example creates an Ingress object with test-grafana.test.svc.cluster.local DNS domain that you should adjust to your domain. Below examples use example-grafana.apps.mydomain.

+

Note: To test a resolvable domain from your machine without creating DNS records, you can adjust /etc/hosts or similar.

+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+

Connecting through Ingress using an unresolvable domain

+

To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller’s IP that can be resolved externally. Again, there are many ways to do so beyond the below examples.

+

Unless stated otherwise, we assume your Ingress is running on port 443.

+
$ INGRESS_PORT=443
+
+
+
+

Variants

+
+
Ingress ExternalIP
+

When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address.

+
$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )"
+
+
+
+
+
Ingress NodePort
+

NodePort is slightly less convenient, but it’s available in development clusters as well.

+
$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )"
+$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )"
+
+
+
+
+
Connection
+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/nodeoperations/automatic-cleanup.html b/v1.11/nodeoperations/automatic-cleanup.html new file mode 100644 index 00000000000..dac28c2bb5b --- /dev/null +++ b/v1.11/nodeoperations/automatic-cleanup.html @@ -0,0 +1,587 @@ + + + + + + + + + + + + + Automatic cleanup and replacement in case when k8s node is lost | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Automatic cleanup and replacement in case when k8s node is lost

+

In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity.

+

When automaticOrphanedNodeCleanup flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/nodeoperations/index.html b/v1.11/nodeoperations/index.html new file mode 100644 index 00000000000..a200a509009 --- /dev/null +++ b/v1.11/nodeoperations/index.html @@ -0,0 +1,587 @@ + + + + + + + + + + + + + Node operations using Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ Menu +
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+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Node operations using Scylla Operator

+
+
+

Choose a topic:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/nodeoperations/maintenance-mode.html b/v1.11/nodeoperations/maintenance-mode.html new file mode 100644 index 00000000000..eb79fc57f14 --- /dev/null +++ b/v1.11/nodeoperations/maintenance-mode.html @@ -0,0 +1,596 @@ + + + + + + + + + + + + + Maintenance mode | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Maintenance mode

+

When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive.

+

This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again.

+

To enable maintenance mode add scylla/node-maintenance label to service in front of Scylla Pod.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance=""
+
+
+

To disable, simply remove this label from service.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance-
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/nodeoperations/replace-node.html b/v1.11/nodeoperations/replace-node.html new file mode 100644 index 00000000000..909ec9bb249 --- /dev/null +++ b/v1.11/nodeoperations/replace-node.html @@ -0,0 +1,670 @@ + + + + + + + + + + + + + Replacing a Scylla node | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Replacing a Scylla node

+
+

Replacing a dead node

+

In the case of a host failure, it may not be possible to bring back the node to life.

+

Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth).

+

This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time

+

Procedure

+
    +
  1. Verify the status of the node using nodetool status command, the node with status DN is down and need to be replaced

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.63 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +DN  10.43.43.51    74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  2. +
  3. Identify service which is bound to down node by checking IP address

    +
    kubectl -n scylla get svc
    +NAME                                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                           AGE
    +simple-cluster-client                   ClusterIP   None            <none>        9180/TCP                                                          3h12m
    +simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.231.189   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h12m
    +simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.125.110   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h11m
    +simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.43.51     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h5m
    +
    +
    +
  4. +
  5. Drain node which we would like to replace using. This command may delete your data from local disks attached to given node!

    +
    kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data
    +
    +
    +

    Pod which will be replaced should enter the Pending state

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h21m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h19m
    +simple-cluster-us-east-1-us-east-1a-2   0/2     Pending   0          8m14s
    +
    +
    +
  6. +
  7. To being node replacing, add scylla/replace="" label to service bound to pod we are replacing.

    +
    kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace=""
    +
    +
    +

    Your failed Pod should be recreated on available k8s node

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h27m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h25m
    +simple-cluster-us-east-1-us-east-1a-2   1/2     Running   0          9s
    +
    +
    +

    Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. +After bootstraping is over, your new Pod should be ready to go. +Old one shouldn’t be no longer visible in nodetool status

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.62 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +UN  10.43.191.172  74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  8. +
  9. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. +You can use Scylla Manager to run the repair.

  10. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/nodeoperations/restore.html b/v1.11/nodeoperations/restore.html new file mode 100644 index 00000000000..24011b8f33d --- /dev/null +++ b/v1.11/nodeoperations/restore.html @@ -0,0 +1,658 @@ + + + + + + + + + + + + + Restore from backup | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+
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+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Restore from backup

+

This procedure will describe how to restore from backup taken using Scylla Manager to a fresh empty cluster of any size.

+

First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod.

+
sctool backup list -c <CLUSTER_ID> --all-clusters -L <BACKUP_LOCATION>
+
+
+

Where:

+
    +
  • CLUSTER_ID - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status.

  • +
  • BACKUP_LOCATION - is a location where backup is stored. For example, for bucket called backups stored in AWS S3, location is s3:backups.

  • +
+
sctool backup list -c simple-cluster --all-clusters -L s3:backups
+Snapshots:
+  - sm_20201227144037UTC (409MiB)
+  - sm_20201228145917UTC (434MiB)
+Keyspaces:
+  - users (9 tables)
+  - system_auth (2 tables)
+  - system_distributed (3 tables)
+  - system_schema (13 tables)
+  - system_traces (5 tables)
+
+
+

To get the list of files use:

+
sctool backup files -c <CLUSTER_ID> -L <BACKUP_LOCATION> -T <SNAPSHOT_TAG>
+
+
+

Where:

+
    +
  • SNAPSHOT_TAG - name of snapshot you want to restore.

  • +
+

Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example:

+
s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz      ./
+
+
+

To download this archive you can use AWS CLI tool aws s3 cp.

+

This archive contains a single CQL file for each keyspace in the backup.

+
tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz
+-rw------- 0/0           12671 2020-12-28 13:17 users.cql
+-rw------- 0/0            2216 2020-12-28 13:17 system_auth.cql
+-rw------- 0/0             921 2020-12-28 13:17 system_distributed.cql
+-rw------- 0/0           12567 2020-12-28 13:17 system_schema.cql
+-rw------- 0/0            4113 2020-12-28 13:17 system_traces.cql
+
+
+

Extract this archive and copy each schema file to one of the cluster Pods by:

+
kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla
+
+
+

To import schema simply execute:

+
kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql
+
+
+

Once the schema is recreated we can proceed to downloading data files.

+

First let’s save a list of snapshot files to file called backup_files.out:

+
kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out
+
+
+

We will be using sstableloader to restore data. sstableloader needs a specific directory structure to work namely: <keyspace>/<table>/<contents> +To create this directory structure and download all the files execute these commands:

+
mkdir snapshot
+cd snapshot
+# Create temporary directory structure.
+cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p
+# Download snapshot files.
+cat ../backup_files.out | xargs -n2 aws s3 cp
+
+
+

To load data into cluster pass cluster address to sstableloader together with path to data files and credentials:

+
sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password <password>
+
+
+

Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/nodeoperations/scylla-upgrade.html b/v1.11/nodeoperations/scylla-upgrade.html new file mode 100644 index 00000000000..55189f75da8 --- /dev/null +++ b/v1.11/nodeoperations/scylla-upgrade.html @@ -0,0 +1,669 @@ + + + + + + + + + + + + + Upgrading version of Scylla | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrading version of Scylla

+

To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition.

+

In this example cluster will be upgraded to version 4.4.5.

+
kubectl -n scylla patch ScyllaCluster simple-cluster  -p '{"spec":{"version": "4.4.5"}}' --type=merge
+
+
+

Operator supports two types of version upgrades:

+
    +
  1. Patch upgrade

  2. +
  3. Generic upgrade

  4. +
+

Patch upgrade

+

Patch upgrade is executed when only patch version change is detected according to semantic versioning format. +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one.

+

Example: 4.0.0 -> 4.0.1

+

Generic upgrade

+

Generic upgrades are executed for the non patch version changes.

+

Example: 4.0.0 -> 2020.1.0 or 4.0.0 -> 4.1.0 or even 4.0.0 -> nightly

+

User can observe current state of upgrade in ScyllaCluster status.

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+[...]
+Status:
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.1.9
+  Upgrade:
+    Current Node:         simple-cluster-us-east-1-us-east-1a-2
+    Current Rack:         us-east-1a
+    Data Snapshot Tag:    so_data_20201228135002UTC
+    From Version:         4.1.9
+    State:                validate_upgrade
+    System Snapshot Tag:  so_system_20201228135002UTC
+    To Version:           4.2.2
+
+
+

Each upgrade begins with taking a snapshot of system and system_schema keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under System Snapshot Tag.

+

Before nodes in rack are upgraded, underlying StatefulSet is changed to use OnDelete UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed.

+

When a node is being upgraded, maintenance mode is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under Data Snapshot Tag and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node.

+

Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version.

+

Current state of upgrade can be traced using Current Node, Current Rack and State status fields.

+
    +
  • Current Node shows which node is being upgraded.

  • +
  • Current Rack displays which rack is being upgraded.

  • +
  • State contain information at which stage upgrade is.

  • +
+

State can have following values:

+
    +
  • begin_upgrade - upgrade is starting

  • +
  • check_schema_agreement - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried.

  • +
  • create_system_backup - system keyspaces snapshot is being taken

  • +
  • find_next_rack - Operator finds out which rack must be upgraded next, decision is saved in Current Rack

  • +
  • upgrade_image_in_pod_spec - Image and UpgradeStrategy is upgraded in underlying StatefulSet

  • +
  • find_next_node - Operator finds out which node must be upgraded next, decision is saved in Current Node

  • +
  • enable_maintenance_mode - maintenance mode is being enabled

  • +
  • drain_node - node is being drained

  • +
  • backup_data - snapshot of data keyspaces is being taken

  • +
  • disable_maintenance_mode - maintenance mode is being disabled

  • +
  • delete_pod - Scylla Pod is being deleted

  • +
  • validate_upgrade - Operator validates if new pod enters Ready state and if Scylla version is upgraded

  • +
  • clear_data_backup - snapshot of data keyspaces is being removed

  • +
  • clear_system_backup - snapshot of system keyspaces is being removed

  • +
  • restore_upgrade_strategy - restore UpgradeStrategy in underlying StatefulSet

  • +
  • finish_upgrade - upgrade cleanup

  • +
+

Recovering from upgrade failure

+

Upgrade may get stuck on validate_upgrade stage. This happens when Scylla Pod refuses to properly boot up.

+

To continue with upgrade, first turn off operator by scaling Operator replicas to zero:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0
+
+
+

Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names.

+

Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2
+
+
+

Operator should continue upgrade process from where it left off.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/objects.inv b/v1.11/objects.inv new file mode 100644 index 00000000000..d3cd1d5c902 --- /dev/null +++ b/v1.11/objects.inv @@ -0,0 +1,6 @@ +# Sphinx inventory version 2 +# Project: Scylla Operator +# Version: +# The remainder of this file is compressed using zlib. +xڅTn0+"6Hk$h4QK& QRBٞ`l*WQ¦ +^EJ'*p0?&'.`e>)ZܕDHg,jvFB݋ 95EPO-G%ɏ(VD. x;u(ǚ7r1}Mǵ5l,kTEnD@ꍚxFNfdFϙpޱ?XBI/j"f+c.MHg:y@;Z-rfZTѿ wV[4B"'72&CԂqa:~ Ax`f2v]ч_O*/}#"q;֡/^%ᗈxi}QTSI͹ihbM~ּ L!T/:gUj'Cg=pg]< ~7PbK:ܓHIoaeݲ؄eJ?bSqr^5Vt/ \ No newline at end of file diff --git a/v1.11/performance.html b/v1.11/performance.html new file mode 100644 index 00000000000..b63ade78180 --- /dev/null +++ b/v1.11/performance.html @@ -0,0 +1,671 @@ + + + + + + + + + + + + + Performance tuning | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Performance tuning

+

Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes.

+
+

Node tuning

+

Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning.

+

Below example NodeConfig tunes nodes having scylla.scylladb.com/node-type=scylla label:

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: NodeConfig
+metadata:
+ name: cluster
+spec:
+ placement:
+   nodeSelector:
+     scylla.scylladb.com/node-type: scylla
+
+
+

For more details about new CRD use:

+
kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1
+
+
+

For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more.

+

Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node.

+

Scylla works most efficently when it’s pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares.

+

On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others.
We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively.

+

Tuning resources are created in a special namespace called scylla-operator-node-tuning.

+

The tuning is applied only to pods with Guaranteed QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions.

+
+
+

Kubernetes tuning

+

By default, the kubelet uses the CFS quota to enforce pod CPU limits.
When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static.

+

Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider.

+

Only pods within the Guaranteed QoS class) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won’t be part of the shared pool.

+

In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class:

+
    +
  • resource request and limits must be equal or only limits have to be provided

  • +
  • agentResources must be provided and their requests and limits must be equal, or only limits have to be provided

  • +
+

An example of such a ScyllaCluster that receives a Guaranteed QoS class is below:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: guaranteed-cluster
+  namespace: scylla
+spec:
+  version: 4.5.1
+  agentVersion: 2.5.2
+  datacenter:
+    name: us-east-1
+    racks:
+    - name: us-east-1a
+      members: 3
+      storage:
+        capacity: 500Gi
+      agentResources:
+        requests:
+          cpu: 1
+          memory: 1G
+        limits:
+          cpu: 1
+          memory: 1G
+      resources:
+        requests:
+          cpu: 4
+          memory: 16G
+        limits:
+          cpu: 4
+          memory: 16G
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/releases.html b/v1.11/releases.html new file mode 100644 index 00000000000..97ce6d14c89 --- /dev/null +++ b/v1.11/releases.html @@ -0,0 +1,850 @@ + + + + + + + + + + + + + Releases | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Releases

+
+

Schedule

+

We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates.

+ + + + + + + + + + + + + + + +
ReleaseCode freezeGeneral availability
1.112023-10-022023-10-16
+
+

Supported releases

+

We support the latest 2 releases of the operator to give everyone time to upgrade.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
ReleaseGeneral availabilitySupport ends
1.102023-08-25Release of 1.12
1.92023-07-04Release of 1.11
1.82023-01-252023-08-25
1.72022-01-272023-07-04
1.62021-12-032023-01-25
1.52021-09-162022-01-27
1.42021-08-102021-12-03
1.32021-06-172021-09-16
1.22021-05-062021-08-10
1.12021-03-222021-06-17
1.02021-01-212021-05-06
+

Backport policy

+

Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers.

+
+
+
+

CI/CD

+

We use GitHub actions for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite.

+
+

Automated promotions

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Git referenceTypeContainer image
masterbranchdocker.io/scylladb/scylla-operator:latest
vX.Ybranchdocker.io/scylladb/scylla-operator:X.Y
vX.Y.Ztagdocker.io/scylladb/scylla-operator:X.Y.Z
vX.Y.Z-alpha.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-alpha.N
vX.Y.Z-beta.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-beta.N
vX.Y.Z-rc.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-rc.N
+
+

Generally available

+

GA images aren’t build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate.

+
+
+
+

Support matrix

+

Support matrix table shows the version requirements for a particular scylla-operator version. Be sure to match these requirements, otherwise some functionality will not work.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
v1.10v1.9v1.8v1.7v1.6v1.5v1.4v1.3v1.2v1.1v1.0
Kubernetes>=1.21>=1.21>=1.21>=1.20 && <1.25>=1.19.10 && <1.25>=1.19.10>=1.19.10>=1.19>=1.19>=1.11>=1.11
CRI APIv1v1v1alpha2v1alpha2v1alpha2
Scylla OS>=5.0>=5.0>=5.0>=4.3>=4.3>=4.3>=4.3>=4.2>=4.2>=4.0>=4.0
Scylla Enterprise>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2020.1>=2020.1>=2020.1>=2020.1
Scylla Manager>=2.6>=2.6>=2.6>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2
Scylla Monitoring>=4.0>=4.0>=4.0>=3.0>=3.0>=1.0>=1.0>=1.0>=1.0>=1.0>=1.0
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.11/scylla-cluster-crd.html b/v1.11/scylla-cluster-crd.html new file mode 100644 index 00000000000..8829e39ed82 --- /dev/null +++ b/v1.11/scylla-cluster-crd.html @@ -0,0 +1,810 @@ + + + + + + + + + + + + + Scylla Cluster CRD | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Cluster CRD

+

Scylla database clusters can be created and configured using the clusters.scylla.scylladb.com custom resource definition (CRD).

+

Please refer to the the user guide walk-through for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD.

+
+

Sample

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: simple-cluster
+  namespace: scylla
+spec:
+  version: 2.3.1
+  repository: scylladb/scylla
+  developerMode: true
+  cpuset: false
+  automaticOrphanedNodeCleanup: true
+  repairs:
+  - name: "weekly us-east-1 repair"
+    intensity: "2"
+    interval: "7d"
+    dc: ["us-east-1"]
+  backups:
+  - name: "daily users backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "1d"
+    keyspace: ["users"]
+  - name: "weekly full cluster backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "7d"
+  datacenter:
+    name: us-east-1
+    racks:
+      - name: us-east-1a
+        members: 3
+        storage:
+          capacity: 500G
+          storageClassName: local-raid-disks
+        resources:
+          requests:
+            cpu: 8
+            memory: 32Gi
+          limits:
+            cpu: 8
+            memory: 32Gi
+        placement:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: failure-domain.beta.kubernetes.io/region
+                    operator: In
+                    values:
+                      - us-east-1
+                  - key: failure-domain.beta.kubernetes.io/zone
+                    operator: In
+                    values:
+                      - us-east-1a
+          tolerations:
+            - key: role
+              operator: Equal
+              value: scylla-clusters
+              effect: NoSchedule
+
+
+
+
+

Settings Explanation

+
+

Cluster Settings

+
    +
  • version: The version of Scylla to use. It is used as the image tag to pull.

  • +
  • agentVersion: The version of Scylla Manager Agent to use. It is used as the image tag to pull.

  • +
  • repository: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • agentRepository: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • developerMode: Optional field. If it’s true, then Scylla is started in developer mode. This setting is for shared test/dev environments.

  • +
  • cpuset: Optional field. If it’s true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the static cpu policy and only specify limits in resources.

  • +
  • automaticOrphanedNodeCleanup: Optional field. Controls if automatic orphan node cleanup should be performed.

  • +
  • alternator: Optional field. Defines Alternator configuration.

    +
      +
    • port: Port on which to bind to Alternator API.

    • +
    • writeIsolation: required Desired write isolation.

    • +
    +
  • +
  • genericUpgrade: Optional field. Defines GenericUpgrade configuration.

    +
      +
    • failureStrategy: specifies which logic is executed when upgrade failure happens. Currently only Retry is supported.

    • +
    • pollInterval: specifies how often upgrade logic polls on state updates. +Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect +overall time spent during upgrade.

    • +
    +
  • +
  • datacenter: Datacenter definition.

  • +
  • sysctls: Optional field. Sysctl properties to be applied during initialization.

  • +
  • scyllaArgs: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it.

  • +
  • network: Optional field. Allows to customize network parameters.

    +
      +
    • hostNetworking: controls if host networking should be enabled.

    • +
    • dnsPolicy: controls Scylla Pod DNS Policy. See details.

    • +
    +
  • +
  • repairs: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
  • backups: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
+

In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups.

+
+
+

Scylla Manager settings

+

Tasks are scheduled only when Scylla Manager is deployed in K8s cluster.

+

Repairs:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. Task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. The number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1", "!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • failFast - Optional field. Stop repair on first error.

  • +
  • intensity - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. +If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). +Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. +Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. +For Scylla clusters that do not support row-level repair, intensity can be a decimal between (0,1). +In that case it specifies percent of shards that can be repaired in parallel on a repair master node. +For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. +Intensity is a number passed as string due to lack of support for float values in k8s controller runtime

  • +
  • parallel - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). +Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. +The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. +The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace", "!keyspace.table_prefix_*"] +used to include or exclude keyspaces from repair.

  • +
  • smallTableThreshold - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units [B, MiB, GiB, TiB] (default "1GiB").

  • +
+

Backups:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - Optional field. Specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. the number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1","!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace","!keyspace.table_prefix_*"] used to include or exclude keyspaces from backup.

  • +
  • location - Optional field. A list of backup locations in the format [<dc>:]<provider>:<name> ex. s3:my-bucket. +The <dc>: part is optional and is only needed when different datacenters are being used to upload data to different locations. +<name> Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are s3 and gcs.

  • +
  • rateLimit - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format [<dc>:]<limit>. +The <dc>: part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100).

  • +
  • retention - Optional field. The number of backups which are to be stored (default 3).

  • +
  • snapshotParallel - Optional field. A list of snapshot parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set, the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
  • uploadParallel - Optional field. A list of upload parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
+
+
+

Datacenter Settings

+
    +
  • name: Name of the datacenter. Usually, a datacenter corresponds to a region.

  • +
  • racks: List of racks for the specific datacenter.

  • +
+
+
+

Rack Settings

+
    +
  • name: Name of the rack. Usually, a rack corresponds to an availability zone.

  • +
  • members: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don’t call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node).

  • +
  • storage: Defines the specs of the underlying storage.

    +
      +
    • capacity: Capacity of the PersistentVolume to request.

    • +
    • storageClassName: Optional field. StorageClass of PersistentVolume to request.

    • +
    +
  • +
  • resources: Defines the CPU and RAM resources for the Scylla Pods.

    +
      +
    • requests: The minimum amount of resources needed to run a Scylla container.

      +
        +
      • cpu: CPU requests.

      • +
      • memory: RAM requests.

      • +
      +
    • +
    • limits: The maximum amount of resources that can be used by a Scylla container.

      +
        +
      • cpu: CPU limits.

      • +
      • memory: RAM limits.

      • +
      +
    • +
    +
  • +
  • agentResources: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See resources for details.

  • +
  • volumes: Optional field. Defines volumes available in Scylla Pod. See details.

  • +
  • volumeMounts: Optional field. Defines which volumes will be attached to Scylla container.

  • +
  • agentVolumeMounts: Optional field. Defines which volumes will be attached to Agent container.

  • +
  • scyllaConfig: Optional field. name of custom config map which will be merged with Scylla config.

  • +
  • scyllaAgentConfig: Optional field. name of custom secret which will be merged with Scylla Manager Agent config.

  • +
  • placement: Optional field. Defines the placement of Scylla Pods. Has the following subfields:

    + +
  • +
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
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+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrade of Scylla Operator

+

This page describes Scylla Operator upgrade procedures.
There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps.

+
+

Upgrade via Helm

+

Helm doesn’t support managing CustomResourceDefinition resources (#5871, #7735)
These are only created on first install and never updated. In order to update them, users have to do it manually.

+

Replace <release_name> with the name of your Helm release for Scylla Operator and replace <version> with the version number you want to install:

+
    +
  1. Make sure Helm chart repository is up-to-date:

    +
    helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable
    +helm repo update
    +
    +
    +
  2. +
  3. Update CRD resources. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    tmpdir=$( mktemp -d ) \
    +  && helm pull scylla-operator/scylla-operator --version <version> --untar --untardir "${tmpdir}" \
    +  && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \
    +  | xargs kubectl apply
    +
    +
    +
  4. +
  5. Update Scylla Operator

    +
    helm upgrade --version <version> <release_name> scylla-operator/scylla-operator
    +
    +
    +
  6. +
+
+
+

Upgrade via kubectl

+

Replace <version> with the version number you want to install:

+
    +
  1. Checkout source code of version you want to use:

    +
    git checkout <version>
    +
    +
    +
  2. +
  3. Manifests use rolling minor version tag, you may want to pin it to specific version:

    +
    find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:<version>^g"
    +
    +
    +
  4. +
  5. Update Scylla Operator. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    kubectl apply -f deploy/operator
    +
    +
    +
  6. +
+
+
+
+

v1.2.0 -> v1.3.0

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.3.0:

    +
    git checkout v1.3.0
    +
    +
    +
  2. +
  3. Update Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  4. +
  5. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  6. +
+
+
+

v1.1.0 -> v1.2.0

+

1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones.

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.2.0:

    +
    git checkout v1.2.0
    +
    +
    +
  2. +
  3. Remove old scylla operator namespace - in our case it’s called scylla-operator-system:

    +
    kubectl delete namespace scylla-operator-system --wait=true
    +
    +
    +
  4. +
  5. Remove old webhooks:

    +
    kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration
    +kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration
    +
    +
    +
  6. +
  7. Install Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  8. +
  9. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  10. +
+
+
+

v1.0.0 -> v1.1.0

+

During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected.

+
    +
  1. Get name of StatefulSet managing Scylla Operator

    +
    kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager"
    +
    +NAME                                 READY   AGE
    +scylla-operator-controller-manager   1/1     95m
    +
    +
    +
  2. +
  3. Change probes and used container image by applying following patch:

    +
    spec:
    +  template:
    +    spec:
    +      containers:
    +      - name: manager
    +        image: docker.io/scylladb/scylla-operator:1.1.0
    +        livenessProbe:
    +          httpGet:
    +            path: /healthz
    +            port: 8080
    +            scheme: HTTP
    +        readinessProbe:
    +          $retainKeys:
    +          - httpGet
    +          httpGet:
    +            path: /readyz
    +            port: 8080
    +            scheme: HTTP
    +
    +
    +

    To apply above patch save it to file (operator-patch.yaml for example) and apply to Operator StatefulSet:

    +
    kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)"
    +
    +
    +
  4. +
+
+
+

v0.3.0 -> v1.0.0

+

Note: There’s an experimental migration procedure available here.

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common +kind which is easier to disambiguate. (ScyllaCluster). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide.

+
    +
  1. Get list of existing Scylla clusters

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +
  2. +
  3. Delete each one of them

    +
    kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster
    +
    +
    +
  4. +
  5. Make sure you’re on v0.3.0 branch

    +
    git checkout v0.3.0
    +
    +
    +
  6. +
  7. Delete existing CRD and Operator

    +
    kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  8. +
  9. Checkout v1.0.0 version

    +
    git checkout v1.0.0
    +
    +
    +
  10. +
  11. Install new CRD and Scylla Operator

    +
    kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  12. +
  13. Migrate your existing Scylla Cluster definition. Change apiVersion and kind from:

    +
    apiVersion: scylla.scylladb.com/v1alpha1
    +kind: Cluster
    +
    +
    +

    to:

    +
    apiVersion: scylla.scylladb.com/v1
    +kind: ScyllaCluster
    +
    +
    +
  14. +
  15. Once your cluster definition is ready, use kubectl apply to install fresh Scylla cluster.

  16. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/.buildinfo b/v1.8/.buildinfo new file mode 100644 index 00000000000..07a0ae7dea8 --- /dev/null +++ b/v1.8/.buildinfo @@ -0,0 +1,4 @@ +# Sphinx build info version 1 +# This file hashes the configuration used when building these files. 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+

404

+

The ScyllaDB monster ate your page!

+

+ Home +

+
+ + + \ No newline at end of file diff --git a/v1.8/CNAME b/v1.8/CNAME new file mode 100644 index 00000000000..12aae904168 --- /dev/null +++ b/v1.8/CNAME @@ -0,0 +1 @@ +operator.docs.scylladb.com \ No newline at end of file diff --git a/v1.8/_images/logo.png b/v1.8/_images/logo.png new file mode 100644 index 00000000000..5bbfedad2ac Binary files /dev/null and b/v1.8/_images/logo.png differ diff --git a/v1.8/_sources/contributing.md.txt b/v1.8/_sources/contributing.md.txt new file mode 100644 index 00000000000..da5fc078732 --- /dev/null +++ b/v1.8/_sources/contributing.md.txt @@ -0,0 +1,155 @@ +# Contributing to Scylla Operator + +## Prerequisites + +To develop on scylla-operator, your environment must have the following: + +1. [Go 1.13](https://golang.org/dl/) + * Make sure [GOPATH](https://github.com/golang/go/wiki/SettingGOPATH) is set to `GOPATH=$HOME/go`. +2. [Kustomize v3.1.0](https://github.com/kubernetes-sigs/kustomize/releases/tag/v3.1.0) +3. [kubebuilder v2.3.1](https://github.com/kubernetes-sigs/kubebuilder/releases/tag/v2.3.1) +4. [Docker](https://docs.docker.com/install/) +5. Git client installed +6. Github account + +To install all dependencies (Go, kustomize, kubebuilder, dep), simply run: +```bash +./install-dependencies.sh +``` + +## Initial Setup + +### Create a Fork + +From your browser navigate to [http://github.com/scylladb/scylla-operator](http://github.com/scylladb/scylla-operator) and click the "Fork" button. + +### Clone Your Fork + +Open a console window and do the following: + +```bash +# Create the scylla operator repo path +mkdir -p $GOPATH/src/github.com/scylladb + +# Navigate to the local repo path and clone your fork +cd $GOPATH/src/github.com/scylladb + +# Clone your fork, where is your GitHub account name +git clone https://github.com//scylla-operator.git +``` + +### Add Upstream Remote + +First you will need to add the upstream remote to your local git: +```bash +# Add 'upstream' to the list of remotes +git remote add upstream https://github.com/scylladb/scylla-operator.git + +# Verify the remote was added +git remote -v +``` +Now you should have at least `origin` and `upstream` remotes. You can also add other remotes to collaborate with other contributors. + +## Development + +To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch. + +### Building the project + +You can build the project using the Makefile commands: +* Open the Makefile and change the `IMG` environment variable to a repository you have access to. +* Run `make docker-push` and wait for the image to be built and uploaded in your repo. + +### Create a Branch + +From a console, create a new branch based on your fork and start working on it: + +```bash +# Ensure all your remotes are up to date with the latest +git fetch --all + +# Create a new branch that is based off upstream master. Give it a simple, but descriptive name. +# Generally it will be two to three words separated by dashes and without numbers. +git checkout -b feature-name upstream/master +``` + +Now you are ready to make the changes and commit to your branch. + +### Updating Your Fork + +During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to `rebase` your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean. + +Whenever you need to update your local repository, you never want to merge. You **always** will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (`git stash save -u ""`). + +```bash +git fetch --all +git rebase upstream/master +``` + +Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the [Git documentation](https://git-scm.com/docs/git-rebase), it will be well worth it. In a nutshell, rebasing does the following: +- "Unwinds" your local commits. Your local commits are removed temporarily from the history. +- The latest changes from upstream are added to the history +- Your local commits are re-applied one by one +- If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase. +- When done rebasing, you will see all of your commits in the history. + +## Submitting a Pull Request + +Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream. + +In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged. + +### Commit History + +To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits. + +```bash +# Inspect your commit history to determine if you need to squash commits +git log + +# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean. +# In this example, the last 5 commits will be opened in the git rebase tool. +git rebase -i HEAD~5 +``` + +Once your commit history is clean, ensure you have based on the [latest upstream](#updating-your-fork) before you open the PR. + +### Commit messages + +Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good! + +If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed. + +Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you've forgotten everything about what you just did, and you need to get up to speed quickly. + +If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don't want to close the associated issue just put #1234 and the change will get linked into the issue. + +Here is an example of a short commit message: + +``` +sidecar: log on reconcile loop - fixes #1234 +``` + +And here is an example of a longer one: +``` + +api: now supports host networking (#1234) + +The operator CRD now has a "network" property that can be used to +select host networking as well as setting the apropriate DNS policy. + +Fixes #1234 +``` + +### Submitting + +Go to the [Scylla Operator github](https://www.github.com/scylladb/scylla-operator) to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR. + +After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically. diff --git a/v1.8/_sources/eks.md.txt b/v1.8/_sources/eks.md.txt new file mode 100644 index 00000000000..b0024ba3227 --- /dev/null +++ b/v1.8/_sources/eks.md.txt @@ -0,0 +1,123 @@ +# Deploying Scylla on EKS + +This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won't work with different machine tiers. +It sets up the kubelets on EKS nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c + +# From inside the examples/eks folder +cd examples/eks +./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION" +``` + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### EKS Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c +CLUSTER_NAME=scylla-demo +``` + +#### Creating an EKS cluster + +For this guide, we'll create an EKS cluster with the following: + +* A NodeGroup of 3 `i3-2xlarge` Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having `scylla-clusters` toleration. + +``` + - name: scylla-pool + instanceType: i3.2xlarge + desiredCapacity: 3 + labels: + pool: "scylla-pool" + taints: + role: "scylla-clusters:NoSchedule" + ssh: + allow: true + kubeletExtraConfig: + cpuManagerPolicy: static +``` + +* A NodeGroup of 4 `c4.2xlarge` Nodes to deploy `cassandra-stress` later on. These nodes will only accept pods having `cassandra-stress` toleration. + +``` + - name: cassandra-stress-pool + instanceType: c4.2xlarge + desiredCapacity: 4 + labels: + pool: "cassandra-stress-pool" + taints: + role: "cassandra-stress:NoSchedule" + ssh: + allow: true +``` + +* A NodeGroup of 1 `i3.large` Node, where the monitoring stack and operator will be deployed. +``` + - name: monitoring-pool + instanceType: i3.large + desiredCapacity: 1 + labels: + pool: "monitoring-pool" + ssh: + allow: true +``` + +### Installing Required Tools + +#### Installing script third party dependencies + +Script requires several dependencies: +- Helm - See: https://docs.helm.sh/using_helm/#installing-helm +- eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html +- kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/ + + +#### Install the local provisioner + +We deploy the local volume provisioner, which will discover their mount points and make them available as PersistentVolumes. +``` +helm install local-provisioner examples/common/provisioner +``` + +#### Deploy tuning DaemonSet + +Deploy tuning DaemonSet, this will configure your disks and apply several optimizations +``` +kubectl apply -f node-setup-daemonset.yaml +``` + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting an EKS cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +eksctl delete cluster "${CLUSTER_NAME}" +``` diff --git a/v1.8/_sources/generic.md.txt b/v1.8/_sources/generic.md.txt new file mode 100644 index 00000000000..ef78f8501fc --- /dev/null +++ b/v1.8/_sources/generic.md.txt @@ -0,0 +1,375 @@ +# Deploying Scylla on a Kubernetes Cluster + +This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment: + +* [GKE](gke.md) + +## Prerequisites + +* A Kubernetes cluster +* A [Storage Class](https://kubernetes.io/docs/concepts/storage/storage-classes/) to provision [PersistentVolumes](https://kubernetes.io/docs/concepts/storage/persistent-volumes/). +* Helm 3 installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) if you need to install it. + Make sure that you enable the [stable repository](https://github.com/helm/charts#how-do-i-enable-the-stable-repository-for-helm-3) + +## Running locally + +Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and [Minikube](https://minikube.sigs.k8s.io/docs/) makes it a breeze. + +We need to give minikube a little bit more resources than default so start minikube like this: +```console +minikube start --cpus=6 +``` + +Then make kubectl aware of this local installation like this: +```console +eval $(minikube docker-env) +``` + +## Download Scylla Operator +In this guide you will be using the examples and manifests from [Scylla Operator repository](https://github.com/scylladb/scylla-operator), so start off by cloning it to your local machine. +```console +git clone git@github.com:scylladb/scylla-operator.git +cd scylla-operator +``` + +## Deploy Cert Manager +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` +This will install Cert Manager to provision a self-signed certificate. + +Once it's deployed, wait until Cert Manager is ready: + +```console +kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io +kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook +``` + +## Deploy Scylla Operator + +Deploy the Scylla Operator using the following commands: + +```console +kubectl apply -f examples/common/operator.yaml +``` + +This will install the operator in namespace `scylla-operator`. +Wait until it's ready: + +```console +kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator +``` + +If you want to check the logs of the operator you can do so with: + + ```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +## Create and Initialize a Scylla Cluster + +Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the `clusters.scylla.scylladb.com` resource. +Some of that resource's values are configurable, so feel free to browse `cluster.yaml` and tweak the settings to your liking. +Full details for all the configuration options can be found in the [Scylla Cluster CRD documentation](scylla_cluster_crd.md). + +When you are ready to create a Scylla cluster, simply run: + +```console +kubectl create -f examples/generic/cluster.yaml +``` + +We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment. + +```console +kubectl -n scylla get ScyllaCluster +``` + +Checking the pods that are created is as easy as: + +```console +kubectl -n scylla get pods +``` + +The output should be something like: + +```console +NAME READY STATUS RESTARTS AGE +simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 9m49s +simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 7m43s +simple-cluster-us-east-1-us-east-1a-2 2/2 Running 0 6m46s +``` + +It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: `CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER` as specified in `cluster.yaml`. + +In the above example we have the following properties: + + - CLUSTER_NAME: `simple-cluster` + - DATACENTER_NAME: `us-east-1` + - RACK_NAME: `us-east-1a` + - INSTANCE_NUMBER: An automatically generated number attached to the pod name. + +We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want. + +To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in `cluster.yaml`: + +```console +kubectl -n scylla get pod -l app=scylla +``` + +You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run: + +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +Checking the logs of the running scylla instances can be done like this: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla +``` + +### Configure host networking + +To squeeze the most out of your deployment it is sometimes necessary to employ [host networking](https://kubernetes.io/docs/concepts/services-networking/). +To enable this the CRD allows for specifying a `network` parameter as such: + +```yaml +version: 4.0.0 + agentVersion: 2.0.2 + cpuset: true + network: + hostNetworking: true +``` + +This will result in hosts network to be used for the Scylla Stateful Set deployment. + +### Configure container kernel parameters + +Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property `sysctls` that is a list of the desired key-value pairs to set. + +___For example___: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls to`fs.aio-max-nr=N`. + +```yaml +spec: + sysctls: + - "fs.aio-max-nr=2097152" +``` + +### Deploying Alternator + +The operator is also capable of deploying [Alternator](https://www.scylladb.com/alternator/) instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the `cluster.yaml` file from this: +```yaml +spec: + version: 4.0.0 + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +to this: +```yaml +spec: + version: 4.0.0 + alternator: + port: 8000 + writeIsolation: only_rmw_uses_lwt + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +You can specify whichever port you want. + +You must provide desired write isolation, supported values are: "always", "forbid_rmw", "only_rmw_uses_lwt". +Difference between those isolation levels can be found in Scylla Alternator documentation. + +Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster. + +## Accessing the Database + +* From kubectl: + +To get a cqlsh shell in your new Cluster: +```console +kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh +> DESCRIBE KEYSPACES; +``` + + +* From inside a Pod: + +When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service's name follows the convention `-client`. +You can see this Service in your cluster by running: +```console +kubectl -n scylla describe service simple-cluster-client +``` +Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here's an example using the [Python Driver](https://github.com/datastax/python-driver): +```python +from cassandra.cluster import Cluster + +cluster = Cluster(['simple-cluster-client.scylla.svc']) +session = cluster.connect() +``` + +If you are running the Alternator you can access the API on the port you specified using plain http. + +## Configure Scylla + +The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called `scylla.yaml` that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration. + +* Create a ConfigMap the default name that the operator uses is `scylla-config`: +```console +kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml +``` +* Wait for the mount to propagate and then restart the cluster: +```console +kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a +``` +* The new config should be applied automatically by the operator, check the logs to be sure. + +Configuring `cassandra-rackdc.properties` is done by adding the file to the same mount as `scylla.yaml`. +```console +kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f - +``` +The operator will then apply the overridable properties `prefer_local` and `dc_suffix` if they are available in the provided mounted file. + +## Configure Scylla Manager Agent + +The operator creates a second container for each scylla instance that runs [Scylla Manager Agent](https://hub.docker.com/r/scylladb/scylla-manager-agent). +This container serves as a sidecar and it's the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups. + +To configure the agent you just create a new secret called _scylla-agent-config-secret_ and populate it with the contents in the `scylla-manager-agent.yaml` file like this: +```console +kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml +``` + +See [Scylla Manager Agent configuration](https://docs.scylladb.com/operating-scylla/manager/2.0/agent-configuration-file/) for a complete reference of the Scylla Manager agent config file. + +### Scylla Manager Agent auth token + +Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it's empty. +To check which value is being used, decode content of `-auth-token` secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart. + +## Set up monitoring + +To set up monitoring using Prometheus and Grafana follow [this guide](monitoring.md). + +## Scale Up + +The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale up a rack, change the `Spec.Members` field of the rack to the desired value. +* To add a new rack, append the `racks` list with a new rack. Remember to choose a different rack name for the new rack. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Benchmark with cassandra-stress + +After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster. + +> Because cassandra-stress doesn't scale well to multiple cores, we use multiple jobs with a small core count for each + +```bash + +# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each. +# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec. +hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000 +kubectl apply -f scripts/cassandra-stress.yaml +``` + +Make sure you set the proper arguments in case you have altered things such as _name_ or _namespace_. + +```bash +./hack/cass-stress-gen.py -h +usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT] + [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR] + +Generate cassandra-stress job templates for Kubernetes. + +optional arguments: + -h, --help show this help message and exit + --num-jobs NUM_JOBS number of Kubernetes jobs to generate - defaults to 1 + --name NAME name of the generated yaml file - defaults to cassandra-stress + --namespace NAMESPACE + namespace of the cassandra-stress jobs - defaults to "default" + --scylla-version SCYLLA_VERSION + version of scylla server to use for cassandra-stress - defaults to 4.0.0 + --host HOST ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc + --cpu CPU number of cpus that will be used for each job - defaults to 1 + --memory MEMORY memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu + --ops OPS number of operations for each job - defaults to 10000000 + --threads THREADS number of threads used for each job - defaults to 50 * cpu + --limit LIMIT rate limit for each job - defaults to no rate-limiting + --connections-per-host CONNECTIONS_PER_HOST + number of connections per host - defaults to number of cpus + --print-to-stdout print to stdout instead of writing to a file + --nodeselector NODESELECTOR + nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla +``` +While the benchmark is running, open up Grafana and take a look at the monitoring metrics. + +After the Jobs finish, clean them up with: +```bash +kubectl delete -f scripts/cassandra-stress.yaml +``` + +## Scale Down + +The operator supports scale down of a rack. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale down a rack, change the `Spec.Members` field of the rack to the desired value. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Clean Up + +To clean up all resources associated with this walk-through, you can run the commands below. + +**NOTE:** this will destroy your database and delete all of its associated data. + +```console +kubectl delete -f examples/generic/cluster.yaml +kubectl delete -f examples/common/operator.yaml +kubectl delete -f examples/common/cert-manager.yaml +``` + +## Troubleshooting + +If the cluster does not come up, the first step would be to examine the operator's logs: + +```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 +``` diff --git a/v1.8/_sources/gke.md.txt b/v1.8/_sources/gke.md.txt new file mode 100644 index 00000000000..7e5a290f657 --- /dev/null +++ b/v1.8/_sources/gke.md.txt @@ -0,0 +1,170 @@ +# Deploying Scylla on GKE + +This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +GCP_USER=$(gcloud config list account --format "value(core.account)") +GCP_PROJECT=$(gcloud config list project --format "value(core.project)") +GCP_ZONE=us-west1-b + +# From inside the examples/gke folder +cd examples/gke +./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE" + +# Example: +# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b +``` + +:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region. + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### Google Kubernetes Engine Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +GCP_USER=$( gcloud config list account --format "value(core.account)" ) +GCP_PROJECT=$( gcloud config list project --format "value(core.project)" ) +GCP_REGION=us-west1 +GCP_ZONE=us-west1-b +CLUSTER_NAME=scylla-demo +CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" ) +``` + +#### Creating a GKE cluster + +First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called `systemconfig.yaml` with the following content: +``` +kubeletConfig: + cpuManagerPolicy: static +``` + +Then we'll create a GKE cluster with the following: + +1. A NodePool of 2 `n1-standard-8` Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes. + ``` + gcloud container \ + clusters create "${CLUSTER_NAME}" \ + --cluster-version "${CLUSTER_VERSION}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-8" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --image-type "UBUNTU_CONTAINERD" \ + --system-config-from-file=systemconfig.yaml \ + --enable-stackdriver-kubernetes \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +2. A NodePool of 2 `n1-standard-32` Nodes to deploy `cassandra-stress` later on. + + ``` + gcloud container --project "${GCP_PROJECT}" \ + node-pools create "cassandra-stress-pool" \ + --cluster "${CLUSTER_NAME}" \ + --zone "${GCP_ZONE}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --node-taints role=cassandra-stress:NoSchedule \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +3. A NodePool of 4 `n1-standard-32` Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local SSDs attached, which are combined into a RAID0 array by using gcloud beta feature `ephemeral-storage`. It is important to disable `autoupgrade` and `autorepair`. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it's better to handle upgrades manually, with more control over the process and error handling. + ``` + gcloud beta container \ + node-pools create "scylla-pool" \ + --cluster "${CLUSTER_NAME}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "4" \ + --disk-type "pd-ssd" --disk-size "20" \ + --ephemeral-storage local-ssd-count="8" \ + --node-taints role=scylla-clusters:NoSchedule \ + --node-labels scylla.scylladb.com/gke-ephemeral-storage-local-ssd=true \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +#### Setting Yourself as `cluster-admin` +> (By default GKE doesn't give you the necessary RBAC permissions) + +Get the credentials for your new cluster +``` +gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}" +``` + +Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission `container.clusterRoleBindings.create`. +The easiest way to obtain this permission is to enable the `Kubernetes Engine Admin` role for your user in the GCP IAM web interface. +``` +kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}" +``` + + +### Installing Required Tools + +#### Installing Helm + +If you don't have Helm installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) to get the binary for your distro. + +#### Install xfs-formatter DaemonSet + +To run Scylla, it is necessary to convert ephemeral storage's filesystem to `xfs`. Deploy the `xfs-formatter` DaemonSet to have it taken care of. +Unfortunately, GKE is only able to provision the ephemeral storage with `ext4` filesystem while Scylla requires `xfs` filesystem. Deploying the `xfs-format` DaemonSet will format the storage as `xfs` and prevent GKE from reformatting it back to `ext4`. + +Note that despite our best efforts, this solution is only a workaround. Its robustness depends on GKE's disk formatting logic remaining unchanged, for which there is no guarantee. +``` +kubectl apply -f examples/gke/xfs-formatter-daemonset.yaml +``` + +#### Install the local provisioner + +Afterwards, deploy the local volume provisioner, which will discover the RAID0 arrays' mount points and make them available as PersistentVolumes. +``` +helm install local-provisioner examples/common/provisioner +``` + +### Deploy Scylla cluster +In order for the example to work you need to modify the cluster definition in the following way: + +``` +sed -i "s//${GCP_REGION}/g;s//${GCP_ZONE}/g" examples/gke/cluster.yaml +``` + +This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created. + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to install the operator and launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting a GKE cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}" +``` diff --git a/v1.8/_sources/helm.md.txt b/v1.8/_sources/helm.md.txt new file mode 100644 index 00000000000..c226ee8c13c --- /dev/null +++ b/v1.8/_sources/helm.md.txt @@ -0,0 +1,339 @@ +# Deploying Scylla stack using Helm Charts + +In this example we will install Scylla stack on Kubernetes. This includes the following components: +- Scylla Operator +- Scylla Manager +- Scylla + +We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator. + +### Prerequisites + +- Kubernetes 1.16+ +- Helm 3+ + +### TL;DR + +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +kubectl apply -f examples/common/cert-manager.yaml +helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator +helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager +helm install scylla scylla/scylla --create-namespace --namespace scylla +``` + +### Deploy Cert Manager + +This step is optional if you want to use your own certificate. +If you don't have one, make sure to not disable autogeneration using Scylla Operator Helm Chart. + +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` + +Once it's deployed, wait until all Cert Manager pods will enter into Running state: + +```console +kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s +``` + +### Helm Chart repository + +To install Scylla Helm Chart repository execute the following commands: +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +``` + +Then you can search through repository, it should contain at least three Helm charts: +``` +helm search repo scylla +NAME CHART VERSION APP VERSION DESCRIPTION +scylla/scylla 1.0.1 v1.0.1 Scylla is a close-to-the-hardware rewrite of Ca... +scylla/scylla-manager 1.0.1 v1.0.1 Scylla Manager automates database operations. +scylla/scylla-operator 1.0.1 v1.0.1 Scylla Operator is a Kubernetes Operator for ma... +``` + +All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit. + +### Scylla Operator Chart + +This chart is very simple, most interesting customizable fields are `image`, `resources` and `webhook`. +All others can be looked up in Chart source in Scylla Operator repository. + +#### image + +Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change `pullPolicy` if default one does not +fullfill your needs. In [Kubernetes documentation](https://kubernetes.io/docs/concepts/containers/images/) you +can read more about different pull policies. + +Image URL will be composed based on these fields in follwing pattern: +`repository/scylla-operator:tag` +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +#### resources + +You can customize how much resources will be allocated for Operator pods via `resource` field: +```yaml +resources: + limits: + cpu: 100m + memory: 128Mi + requests: + cpu: 100m + memory: 32Mi +``` + +To read more about resource specification, follow [Kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/). + +#### webhook + +Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate. + +`createSelfSignedCertificate` specifies whether a self-signed certificate should be created using Cert Manager +`certificateSecretName`: name of a secret containing custom certificate. + +```yaml +webhook: + createSelfSignedCertificate: true + certificateSecretName: "" +``` + +#### Customization + +You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values. + +You can find an example in Scylla Operator repository under `examples/helm/values.operator.yaml` + +#### Installation + +To deploy Scylla Operator using customized values file execute the following: +``` +helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator +``` + +### Scylla Helm Chart + +Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it. + +#### Customization + +Versions of images used in the cluster can be set via `scyllaImage` and `agentImage` +```yaml +scyllaImage: + repository: scylladb/scylla + tag: 4.3.0 + +agentImage: + repository: scylladb/scylla-manager-agent + tag: 2.2.1 +``` + +A minimal Scylla cluster can be expressed as: +```yaml +datacenter: us-east-1 +racks: +- name: us-east-1b + members: 2 + storage: + capacity: 5G + resources: + limits: + cpu: 1 + memory: 1Gi + requests: + cpu: 1 + memory: 1Gi +``` + +Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory. + +For other customizable fields, please refer to [ScyllaCluster CRD definition](scylla_cluster_crd.md). +CRD Rack Spec and Helm Chart Rack should have the same fields. + +#### Installation + +To deploy Scylla cluster using customzied values file execute the following command: +``` +helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla +``` + +Scylla Operator will provision this cluster on your K8s environment. + +### Scylla Manager Helm Chart + +Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster. + +To read more about Scylla Manager see [Manager guide](manager.md). + +#### Scylla Manager + +To set version of used Scylla Manager you can use `image` field: +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: 2.2.1 +``` +To control how many resources are allocated for Scylla Manager use `resource` field: +```yaml +resources: + limits: + cpu: 500m + memory: 500Mi + requests: + cpu: 500m + memory: 500Mi +``` + +#### Scylla Manager Controller + +Similarly Scylla Manager Controller image can be customized: + +```yaml +controllerImage: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +And allocated resources: +```yaml +controllerResources: + limits: + cpu: 100m + memory: 30Mi + requests: + cpu: 100m + memory: 20Mi +``` + +#### Scylla + +To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It's definition should land as a `scylla` field. + +#### Customization + +All others customizable fields can be looked up in Chart source in Scylla Operator repository. + +#### Installation + +To deploy Scylla Manager using customized values file execute the following command: +``` +helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager +``` + +## Results + +Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn't it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces. + +Scylla Operator: +```shell +$ kubectl -n scylla-operator get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-operator-5dbcb54f5c-vjm4m 1/1 Running 0 51s +pod/scylla-operator-5dbcb54f5c-wfjbw 1/1 Running 0 51s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-operator-webhook ClusterIP 10.105.207.130 443/TCP 51s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-operator 2/2 2 2 51s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-operator-5dbcb54f5c 2 2 2 51s + +``` + +Operator is running! + +Scylla Manager: +```shell +$ kubectl -n scylla-manager get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-manager-669db64dd-bcm4v 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-drbth 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-rhwqx 1/1 Running 0 89s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-manager ClusterIP 10.105.231.53 80/TCP,5090/TCP 89s +service/scylla-manager-client ClusterIP None 9180/TCP,5090/TCP 89s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-manager 1/1 1 1 89s +deployment.apps/scylla-manager-controller 2/2 2 2 89s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-manager-669db64dd 1 1 1 89s +replicaset.apps/scylla-manager-controller-844ccc56c4 2 2 2 89s + + +``` + +Good to go, ready to serve! + +Scylla itself: +```shell +$ kubectl -n scylla get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-us-east-1-us-east-1b-0 2/2 Running 0 5m58s +pod/scylla-us-east-1-us-east-1b-1 2/2 Running 0 4m29s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-client ClusterIP None 9180/TCP,5090/TCP 5m59s +service/scylla-us-east-1-us-east-1b-0 ClusterIP 10.43.149.92 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 5m58s +service/scylla-us-east-1-us-east-1b-1 ClusterIP 10.43.49.0 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 4m29s + +NAME READY AGE +statefulset.apps/scylla-us-east-1-us-east-1b 2/2 5m59s +``` + +Two running nodes, exactly what we were asking for. + +## Monitoring + +To spin up a Prometheus monitoring refer to [monitoring guide](monitoring.md). + +Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor: +```yaml +serviceMonitor: + create: false +``` + +Change `create` to `true` and update your current deployment using: +```shell +helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml +``` + +Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics. + +## Cleanup + +To remove these applications you can simply uninstall them using Helm CLI: +```shell +helm uninstall scylla -n scylla +helm uninstall scylla-manager -n scylla-manager +helm uninstall scylla-operator -n scylla-operator +``` diff --git a/v1.8/_sources/index.rst.txt b/v1.8/_sources/index.rst.txt new file mode 100644 index 00000000000..2746d10038c --- /dev/null +++ b/v1.8/_sources/index.rst.txt @@ -0,0 +1,62 @@ +============================= +Scylla Operator Documentation +============================= + +.. toctree:: + :hidden: + :maxdepth: 1 + + generic + eks + gke + helm + manager + monitoring + migration + nodeoperations/index + performance + upgrade + releases + known_issues + scylla_cluster_crd + contributing + +Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades. + +.. image:: logo.png + :width: 200pt + +For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University. + +scylla-operator is a Kubernetes Operator for managing Scylla clusters. + +Currently it supports: + +* Deploying multi-zone clusters +* Scaling up or adding new racks +* Scaling down +* Monitoring with Prometheus and Grafana +* Integration with `Scylla Manager `_ +* Dead node replacement +* Version Upgrade +* Backup +* Repairs +* Autohealing +* Monitoring with Prometheus and Grafana + +**Choose a topic to begin**: + +* :doc:`Deploying Scylla on a Kubernetes Cluster ` +* :doc:`Deploying Scylla on EKS ` +* :doc:`Deploying Scylla on GKE ` +* :doc:`Deploying Scylla Manager on a Kubernetes Cluster ` +* :doc:`Deploying Scylla stack using Helm Charts ` +* :doc:`Setting up Monitoring using Prometheus and Grafana ` +* :doc:`Node operations ` +* :doc:`Performance tuning [Experimental] ` +* :doc:`Upgrade procedures ` +* :doc:`Releases ` +* :doc:`Known issues ` +* :doc:`Scylla Cluster Custom Resource Definition (CRD) ` +* :doc:`Contributing to the Scylla Operator Project ` diff --git a/v1.8/_sources/known_issues.md.txt b/v1.8/_sources/known_issues.md.txt new file mode 100644 index 00000000000..1af3a7bfdd1 --- /dev/null +++ b/v1.8/_sources/known_issues.md.txt @@ -0,0 +1,14 @@ +# Known issues + +### Scylla Manager does not boot up on Minikube + +If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for [TRUNCATE queries](#truncate-queries-does-not-work-on-minikube). + +### TRUNCATE queries does not work on Minikube + +The `TRUNCATE` queries requires [hairpinning](https://en.wikipedia.org/wiki/Hairpinning) to be enabled. On minikube this is disabled by default. + +To fix it execute the following command: +``` +minikube ssh sudo ip link set docker0 promisc on +``` diff --git a/v1.8/_sources/manager.md.txt b/v1.8/_sources/manager.md.txt new file mode 100644 index 00000000000..470ef951202 --- /dev/null +++ b/v1.8/_sources/manager.md.txt @@ -0,0 +1,258 @@ +# Deploying Scylla Manager on a Kubernetes Cluster + +Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way. + +Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager [Proprietary Software License Agreement](https://www.scylladb.com/scylla-manager-software-license-agreement/) for details. + +## Prerequisites + +* Kubernetes cluster +* Scylla Operator - see [generic guide](generic.md) + +## Architecture + +Scylla Manager in K8s consist of: +- Dedicated Scylla Cluster + + Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace. + +- Scylla Manager Controller + + Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states. + 1. What user wants - task definition in CRD. + 2. What Controller registered - Task name to Task ID mapping - CRD status. + 3. Scylla Manager task listing - internal state of Scylla Manager. + + When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling. + +- Scylla Manager + + Regular Scylla Manager, the same used in cloud and bare metal deployments. + + + +## Deploy Scylla Manager + +Deploy the Scylla Manager using the following commands: + +```console +kubectl apply -f examples/common/manager.yaml +``` + +This will install the Scylla Manager in the `scylla-manager` namespace. +You can check if the Scylla Manager is up and running with: + +```console +kubectl -n scylla-manager get pods +NAME READY STATUS RESTARTS AGE +scylla-manager-cluster-manager-dc-manager-rack-0 2/2 Running 0 37m +scylla-manager-controller-0 1/1 Running 0 28m +scylla-manager-scylla-manager-7bd9f968b9-w25jw 1/1 Running 0 37m +``` + +As you can see there are three pods: +* `scylla-manager-cluster-manager-dc-manager-rack-0` - is a single node Scylla cluster. +* `scylla-manager-controller-0` - Scylla Manager Controller. +* `scylla-manager-scylla-manager-7bd9f968b9-w25jw` - Scylla Manager. + +To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command: + + ```console +kubectl -n scylla-manager logs scylla-manager-controller-0 +``` + +The output should be something like: +```console +{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +``` + +To check logs of Scylla Manager itself, use following command: +```console +kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + +The output should be something like: + +```console +{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +``` + +If there are no errors in the logs, let's spin a Scylla Cluster. + +## Cluster registration + + +When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster. + +See [generic tutorial](generic.md) to spawn your cluster. + +Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager. + +Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager. + + ```console +kubectl -n scylla describe Cluster + +[...] +Status: + Manager Id: d1d532cd-49f2-4c97-9263-25126532803b + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` +You can use this ID to talk to Scylla Manager using `sctool` CLI installed in Scylla Manager Pod. +You can also use Cluster name in `namespace/cluster-name` format. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator). + +In this task listing we can see CQL and REST healthchecks. + +## Task scheduling + +You can either define tasks prior Cluster creation, or for existing Cluster. +Let's edit already running cluster definition to add repair and backup task. +```console +kubectl -n scylla edit Cluster simple-cluster +``` + +Add following task definition to Cluster spec: +``` + repairs: + - name: "users repair" + keyspace: ["users"] + interval: "1d" + backup: + - name: "weekly backup" + location: ["s3:cluster-backups"] + retention: 3 + interval: "7d" + - name: "daily backup" + location: ["s3:cluster-backups"] + retention: 7 + interval: "1d" +``` + +For full task definition configuration consult [Scylla Cluster CRD](scylla_cluster_crd.md). + +**Note**: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up. + +Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372 │ -L s3:cluster-backups --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d) │ NEW │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a │ │ 23 Sep 20 14:38:42 CEST │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly. + +To check progress of run you can use following command: + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a +Status: RUNNING +Start time: 23 Sep 20 14:38:42 UTC +Duration: 13s +Progress: 2.69% +Datacenters: + - us-east-1 ++--------------------+-------+ +| system_auth | 8.06% | +| system_distributed | 0.00% | +| system_traces | 0.00% | ++--------------------+-------+ + +``` +Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing. + +## Clean Up + +To clean up all resources associated with Scylla Manager, you can run the commands below. + +**NOTE:** this will destroy your Scylla Manager database and delete all of its associated data. + +```console +kubectl delete -f examples/common/manager.yaml +``` + +## Troubleshooting + +**Manager is not running** + +If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs: + +```console +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + + +**My task wasn't scheduled** + +If your task wasn't scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs. + +Example: + +Following status describes error when backup task cannot be scheduled, due to lack of access to bucket: +```console +Status: + Backups: + Error: create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug" + Id: 00000000-0000-0000-0000-000000000000 + Interval: 0 + Location: + s3:manager-test + Name: adhoc backup + Num Retries: 3 + Retention: 3 + Start Date: now + Manager Id: 2b9dbe8c-9daa-4703-a66d-c29f63a917c8 + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` + +Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status. \ No newline at end of file diff --git a/v1.8/_sources/migration.md.txt b/v1.8/_sources/migration.md.txt new file mode 100644 index 00000000000..cdd7a7e8522 --- /dev/null +++ b/v1.8/_sources/migration.md.txt @@ -0,0 +1,146 @@ +## Version migrations + + +### `v0.3.0` -> `v1.0.0` migration + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common kind +which is easier to disambiguate (`ScyllaCluster`). +***This change is backward incompatible, which means manual migration is needed.*** + +This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the [upgrade guide](upgrade.md) where full deletion is requested, this procedure shouldn't cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn't run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first. + +***Read the whole procedure and make sure you understand what is going on before executing any of the commands!*** + +In case of any issues or questions regarding this procedure, you're welcomed on our [Scylla Users Slack](http://slack.scylladb.com/) +on #kubernetes channel. + +### Procedure + +1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` + All below commands will use `scylla` namespace and `simple-cluster` as a cluster name. +1. Make sure you're using v1.0.0 tag: + ``` + git checkout v1.0.0 + ``` +1. Upgrade your `cert-manager` to `v1.0.0`. If you installed it from a static file from this repo, simply execute the following: + ``` + kubectl apply -f examples/common/cert-manager.yaml + ``` + If your `cert-manager` was installed in another way, follow official instructions on `cert-manager` website. +1. `examples/common/operator.yaml` file contains multiple resources. Extract **only** `CustomResourceDefinition` to separate file. +1. Install v1.0.0 CRD definition from file created in the previous step: + ``` + kubectl apply -f examples/common/crd.yaml + ``` +1. Save your existing `simple-cluster` Cluster definition to a file: + ``` + kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml + ``` +1. Migrate `Kind` and `ApiVersion` to new values using: + ``` + sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml + sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml + ``` +1. Install migrated CRD instance + ``` + kubectl apply -f existing-cluster.yaml + ``` + At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator. +1. Get UUID of newly created ScyllaCluster resource: + ``` + kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}" + + 12a3678d-8511-4c9c-8a48-fa78d3992694 + ``` + Save output UUID somewhere, it will be referred as `` in commands below. + + ***Depending on your shell, you might get additional '%' sign at the end of UUID, make sure to remove it!*** + +1. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters: + ``` + kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]' + ``` + Amend role name according to your cluster name, it should look like `-member`. +1. Get a list of all Services associated with your cluster. First get list of all services: + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 109m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 108m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 106m + + ``` +1. For each service, change its `ownerReference` to point to new CRD instance: + ``` + kubectl -n scylla patch svc --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with Service name, and `` with saved UUID from one of the previous steps. +1. Get a list of all Services again to see if none was deleted. Check also "Age" column, it shouldn't be lower than previous result. + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 110m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 110m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 107m + + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m + ``` +1. For each StatefulSet from previous step, change its `ownerReference` to point to new CRD instance. + + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with StatefulSet name, and `` with saved UUID from one of the previous steps. + +1. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. + Checkout `v0.3.0` version, and remove Scylla Operator, and old CRD: + ``` + git checkout v0.3.0 + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0`, and install upgraded Scylla Operator: + ``` + git checkout v1.0.0 + kubectl apply -f examples/common/operator.yaml + ``` +1. Wait until Scylla Operator boots up: + ``` + kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m +1. For each StatefulSet from previous step, change its sidecar container image to `v1.0.0`, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one. + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + kubectl -n scylla rollout status sts + ``` + Replace `` with StatefulSet name. +1. If you're using Scylla Manager, bump Scylla Manager Controller image to `v1.0.0` + ``` + kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + ``` +1. Your Scylla cluster is now migrated to `v1.0.0`. diff --git a/v1.8/_sources/monitoring.md.txt b/v1.8/_sources/monitoring.md.txt new file mode 100644 index 00000000000..ab62636561d --- /dev/null +++ b/v1.8/_sources/monitoring.md.txt @@ -0,0 +1,76 @@ +### Setting up Monitoring + +Both Prometheus, Grafana and AlertManager were configured with specific rules for Scylla Monitoring. +All of them will be available under the `scylla-monitoring` namespace. +Customization can be done in `examples/common/monitoring/values.yaml` + + +1. Download Scylla Monitoring + + First you need to download Scylla Monitoring, which contains Grafana dashboards and custom Prometheus rules. + You can do this by running the following command: + ``` + mkdir scylla-monitoring + curl -L https://github.com/scylladb/scylla-monitoring/tarball/branch-4.0 | tar -xzf - -C scylla-monitoring --strip-components=1 + ``` + +1. Add monitoring stack charts repository + + ``` + helm repo add prometheus-community https://prometheus-community.github.io/helm-charts + helm repo update + ``` + +1. Install monitoring stack + + ``` + helm install monitoring prometheus-community/kube-prometheus-stack --create-namespace --namespace scylla-monitoring -f examples/common/monitoring/values.yaml -f <( cd scylla-monitoring/prometheus/prom_rules && find * -maxdepth 1 -type f -iregex '.*\.\(yaml\|yml\)' -print0 | xargs -0 yq ea '{(filename | sub("\/", "-")): .} | . as $item ireduce ({}; . * $item) | {"additionalPrometheusRulesMap": .}' ) + ``` + + If you want to tweak the Prometheus properties, for example it's assigned memory, + you can override it by adding a command line argument like this: `--set prometheus.resources.limits.memory=4Gi` + or edit values file located at `examples/common/monitoring/values.yaml`. + + The `yq` command prepares and formats custom Prometheus rules included in Scylla Monitoring and passes them as + additional values to `helm install` command. + It results in creating additional PrometheusRules: custom resources used to mount the rules into Prometheus. + +1. Install Service Monitors + + ServiceMonitors are used by the Prometheus to discover applications exposing metrics. + + ``` + # Scylla Service Monitor + kubectl apply -f examples/common/monitoring/scylla-service-monitor.yaml + + # Scylla Manager Service Monitor + kubectl apply -f examples/common/monitoring/scylla-manager-service-monitor.yaml + ``` + +1. Install dashboards + + Scylla Monitoring comes with pre generated dashboards suitable for multiple Scylla versions. + In this example we will use dashboards for Scylla 4.6, and Scylla Manager 3.0. + Amend directory path to generated dashboards to version suitable for your deployment. + + Now the dashboards can be created like this: + ``` + # Scylla dashboards + for f in scylla-monitoring/grafana/build/ver_4.6/*.json; do + kubectl -n scylla-monitoring create configmap scylla-dashboard-"$( basename "${f}" '.json' )" --from-file="${f}" --dry-run=client -o yaml | kubectl label -f- --dry-run=client -o yaml --local grafana_dashboard=1 | kubectl apply --server-side -f- + done + + # Scylla Manager dashboards + for f in scylla-monitoring/grafana/build/manager_3.0/*.json; do + kubectl -n scylla-monitoring create configmap scylla-manager-dashboard-"$( basename "${f}" '.json' )" --from-file="${f}" --dry-run=client -o yaml | kubectl label -f- --dry-run=client -o yaml --local grafana_dashboard=1 | kubectl apply --server-side -f- + done + ``` + + Once Grafana sidecar picks up these dashboards they should be accessible in Grafana. + +To access Grafana locally, run: + ``` + kubectl -n scylla-monitoring port-forward deployment.apps/monitoring-grafana 3000 + ``` + + You can find it on `http://127.0.0.1:3000` and login with the credentials `admin`:`admin`. \ No newline at end of file diff --git a/v1.8/_sources/nodeoperations/automatic_cleanup.md.txt b/v1.8/_sources/nodeoperations/automatic_cleanup.md.txt new file mode 100644 index 00000000000..5e0535cca97 --- /dev/null +++ b/v1.8/_sources/nodeoperations/automatic_cleanup.md.txt @@ -0,0 +1,6 @@ +# Automatic cleanup and replacement in case when k8s node is lost + +In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity. + +When `automaticOrphanedNodeCleanup` flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources. diff --git a/v1.8/_sources/nodeoperations/index.rst.txt b/v1.8/_sources/nodeoperations/index.rst.txt new file mode 100644 index 00000000000..d5667b9a4f7 --- /dev/null +++ b/v1.8/_sources/nodeoperations/index.rst.txt @@ -0,0 +1,22 @@ +====================================== +Node operations using Scylla Operator +====================================== + +.. toctree:: + :hidden: + :maxdepth: 2 + + scylla_upgrade + replace_node + automatic_cleanup + maintenance_mode + restore + + +Choose a topic: + +* :doc:`Scylla version upgrade ` +* :doc:`Replace Scylla node ` +* :doc:`Automatic cleanup and replacement when k8s node is lost ` +* :doc:`Maintenance mode ` +* :doc:`Restore from backup ` \ No newline at end of file diff --git a/v1.8/_sources/nodeoperations/maintenance_mode.md.txt b/v1.8/_sources/nodeoperations/maintenance_mode.md.txt new file mode 100644 index 00000000000..c976ecc2b87 --- /dev/null +++ b/v1.8/_sources/nodeoperations/maintenance_mode.md.txt @@ -0,0 +1,19 @@ +# Maintenance mode + +When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive. + +This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again. + +To enable maintenance mode add `scylla/node-maintenance` label to service in front of Scylla Pod. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance="" +``` + +To disable, simply remove this label from service. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance- +``` diff --git a/v1.8/_sources/nodeoperations/replace_node.md.txt b/v1.8/_sources/nodeoperations/replace_node.md.txt new file mode 100644 index 00000000000..3e6a8c7f024 --- /dev/null +++ b/v1.8/_sources/nodeoperations/replace_node.md.txt @@ -0,0 +1,74 @@ +# Replacing a Scylla node + +## Replacing a dead node +In the case of a host failure, it may not be possible to bring back the node to life. + +Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth). + +_This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time_ + +**Procedure** + +1. Verify the status of the node using `nodetool status` command, the node with status DN is down and need to be replaced + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.63 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + DN 10.43.43.51 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Identify service which is bound to down node by checking IP address + ```bash + kubectl -n scylla get svc + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.231.189 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.125.110 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h11m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.43.51 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h5m + ``` +1. Drain node which we would like to replace using. **This command may delete your data from local disks attached to given node!** + ```bash + kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data + ``` + + Pod which will be replaced should enter the `Pending` state + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h21m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h19m + simple-cluster-us-east-1-us-east-1a-2 0/2 Pending 0 8m14s + ``` +1. To being node replacing, add `scylla/replace=""` label to service bound to pod we are replacing. + ```bash + kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace="" + ``` + Your failed Pod should be recreated on available k8s node + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h27m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h25m + simple-cluster-us-east-1-us-east-1a-2 1/2 Running 0 9s + ``` + Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. + After bootstraping is over, your new Pod should be ready to go. + Old one shouldn't be no longer visible in `nodetool status` + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.62 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + UN 10.43.191.172 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. + You can use [Scylla Manager](../manager.md) to run the repair. diff --git a/v1.8/_sources/nodeoperations/restore.md.txt b/v1.8/_sources/nodeoperations/restore.md.txt new file mode 100644 index 00000000000..b4d85573cff --- /dev/null +++ b/v1.8/_sources/nodeoperations/restore.md.txt @@ -0,0 +1,89 @@ +# Restore from backup + +This procedure will describe how to restore from backup taken using [Scylla Manager](../manager.md) to a fresh **empty** cluster of any size. + +First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod. +```bash +sctool backup list -c --all-clusters -L +``` + +Where: +* `CLUSTER_ID` - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status. +* `BACKUP_LOCATION` - is a location where backup is stored. For example, for bucket called `backups` stored in AWS S3, location is `s3:backups`. + +```bash +sctool backup list -c simple-cluster --all-clusters -L s3:backups +Snapshots: + - sm_20201227144037UTC (409MiB) + - sm_20201228145917UTC (434MiB) +Keyspaces: + - users (9 tables) + - system_auth (2 tables) + - system_distributed (3 tables) + - system_schema (13 tables) + - system_traces (5 tables) +``` + +To get the list of files use: + +```bash +sctool backup files -c -L -T +``` + +Where: +* `SNAPSHOT_TAG` - name of snapshot you want to restore. + +Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example: +```bash +s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz ./ +``` + +To download this archive you can use AWS CLI tool `aws s3 cp`. + +This archive contains a single CQL file for each keyspace in the backup. +```bash +tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz +-rw------- 0/0 12671 2020-12-28 13:17 users.cql +-rw------- 0/0 2216 2020-12-28 13:17 system_auth.cql +-rw------- 0/0 921 2020-12-28 13:17 system_distributed.cql +-rw------- 0/0 12567 2020-12-28 13:17 system_schema.cql +-rw------- 0/0 4113 2020-12-28 13:17 system_traces.cql +``` + +Extract this archive and copy each schema file to one of the cluster Pods by: +```bash +kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla +``` + +To import schema simply execute: +```bash +kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql +``` + +Once the schema is recreated we can proceed to downloading data files. + +First let's save a list of snapshot files to file called `backup_files.out`: + +```bash +kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out +``` + +We will be using `sstableloader` to restore data. `sstableloader` needs a specific directory structure to work namely: `//` +To create this directory structure and download all the files execute these commands: +```bash +mkdir snapshot +cd snapshot +# Create temporary directory structure. +cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p +# Download snapshot files. +cat ../backup_files.out | xargs -n2 aws s3 cp +``` + +To load data into cluster pass cluster address to `sstableloader` together with path to data files and credentials: +```bash +sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password +``` + +Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host. diff --git a/v1.8/_sources/nodeoperations/scylla_upgrade.md.txt b/v1.8/_sources/nodeoperations/scylla_upgrade.md.txt new file mode 100644 index 00000000000..d39c9666c5e --- /dev/null +++ b/v1.8/_sources/nodeoperations/scylla_upgrade.md.txt @@ -0,0 +1,102 @@ +# Upgrading version of Scylla + +To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition. + +In this example cluster will be upgraded to version `4.4.5`. +```bash +kubectl -n scylla patch ScyllaCluster simple-cluster -p '{"spec":{"version": "4.4.5"}}' --type=merge +``` + +Operator supports two types of version upgrades: +1. Patch upgrade +1. Generic upgrade + + +**Patch upgrade** + +Patch upgrade is executed when only patch version change is detected according to [semantic versioning format](https://semver.org/). +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one. + +Example: `4.0.0 -> 4.0.1` + +**Generic upgrade** + +Generic upgrades are executed for the non patch version changes. + +Example: `4.0.0 -> 2020.1.0` or `4.0.0 -> 4.1.0` or even `4.0.0 -> nightly` + +User can observe current state of upgrade in ScyllaCluster status. +```bash +kubectl -n scylla describe ScyllaCluster simple-cluster +[...] +Status: + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.1.9 + Upgrade: + Current Node: simple-cluster-us-east-1-us-east-1a-2 + Current Rack: us-east-1a + Data Snapshot Tag: so_data_20201228135002UTC + From Version: 4.1.9 + State: validate_upgrade + System Snapshot Tag: so_system_20201228135002UTC + To Version: 4.2.2 +``` + +Each upgrade begins with taking a snapshot of `system` and `system_schema` keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under `System Snapshot Tag`. + +Before nodes in rack are upgraded, underlying StatefulSet is changed to use `OnDelete` UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed. + +When a node is being upgraded, [maintenance mode](#maintenance-mode) is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under `Data Snapshot Tag` and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node. + +Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version. + +Current state of upgrade can be traced using `Current Node`, `Current Rack` and `State` status fields. +* `Current Node` shows which node is being upgraded. +* `Current Rack` displays which rack is being upgraded. +* `State` contain information at which stage upgrade is. + +`State` can have following values: +* `begin_upgrade` - upgrade is starting +* `check_schema_agreement` - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried. +* `create_system_backup` - system keyspaces snapshot is being taken +* `find_next_rack` - Operator finds out which rack must be upgraded next, decision is saved in `Current Rack` +* `upgrade_image_in_pod_spec` - Image and UpgradeStrategy is upgraded in underlying StatefulSet +* `find_next_node` - Operator finds out which node must be upgraded next, decision is saved in `Current Node` +* `enable_maintenance_mode` - maintenance mode is being enabled +* `drain_node` - node is being drained +* `backup_data` - snapshot of data keyspaces is being taken +* `disable_maintenance_mode` - maintenance mode is being disabled +* `delete_pod` - Scylla Pod is being deleted +* `validate_upgrade` - Operator validates if new pod enters Ready state and if Scylla version is upgraded +* `clear_data_backup` - snapshot of data keyspaces is being removed +* `clear_system_backup` - snapshot of system keyspaces is being removed +* `restore_upgrade_strategy` - restore UpgradeStrategy in underlying StatefulSet +* `finish_upgrade` - upgrade cleanup + +**Recovering from upgrade failure** + +Upgrade may get stuck on `validate_upgrade` stage. This happens when Scylla Pod refuses to properly boot up. + +To continue with upgrade, first turn off operator by scaling Operator replicas to zero: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0 +``` +Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names. + +Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2 +``` + +Operator should continue upgrade process from where it left off. diff --git a/v1.8/_sources/performance.md.txt b/v1.8/_sources/performance.md.txt new file mode 100644 index 00000000000..4b0bbd96781 --- /dev/null +++ b/v1.8/_sources/performance.md.txt @@ -0,0 +1,95 @@ +# Performance tuning + +Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes. + +## Node tuning + +Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning. + +Below example NodeConfig tunes nodes having `scylla.scylladb.com/node-type=scylla` label: +``` +apiVersion: scylla.scylladb.com/v1alpha1 +kind: NodeConfig +metadata: + name: cluster +spec: + placement: + nodeSelector: + scylla.scylladb.com/node-type: scylla +``` +For more details about new CRD use: +``` +kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1 +``` + +For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more. + +Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node. + +Scylla works most efficently when it's pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares. + +On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others. +We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively. + +Tuning resources are created in a special namespace called `scylla-operator-node-tuning`. + +The tuning is applied only to pods with `Guaranteed` QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions. + +## Kubernetes tuning + +By default, the kubelet uses the CFS quota to enforce pod CPU limits. +When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static. + +Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider. + +Only pods within the [Guaranteed QoS class](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/#create-a-pod-that-gets-assigned-a-qos-class-of-guaranteed)) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won't be part of the shared pool. + +In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class: +* resource request and limits must be equal or only limits have to be provided +* agentResources must be provided and their requests and limits must be equal, or only limits have to be provided + +An example of such a ScyllaCluster that receives a Guaranteed QoS class is below: + +``` +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: guaranteed-cluster + namespace: scylla +spec: + version: 4.5.1 + agentVersion: 2.5.2 + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500Gi + agentResources: + requests: + cpu: 1 + memory: 1G + limits: + cpu: 1 + memory: 1G + resources: + requests: + cpu: 4 + memory: 16G + limits: + cpu: 4 + memory: 16G +``` \ No newline at end of file diff --git a/v1.8/_sources/releases.md.txt b/v1.8/_sources/releases.md.txt new file mode 100644 index 00000000000..9ef103b08b8 --- /dev/null +++ b/v1.8/_sources/releases.md.txt @@ -0,0 +1,55 @@ +# Releases + +## Schedule +We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates. + +| Release | Code freeze | General availability | +| :-----: | :---------: | :------------------: | +| 1.8 | 2022-03-02 | 2021-03-16 | + +## Supported releases +We support the latest 2 releases of the operator to give everyone time to upgrade. + +| Release | General availability | Support ends | +| :-----: | :-----------------------: | :------------: | +| 1.7 | 2022-01-27 | Release of 1.9 | +| 1.6 | 2021-12-03 | Release of 1.8 | +| 1.5 | 2021-09-16 | 2022-01-27 | +| 1.4 | 2021-08-10 | 2021-12-03 | +| 1.3 | 2021-06-17 | 2021-09-16 | +| 1.2 | 2021-05-06 | 2021-08-10 | +| 1.1 | 2021-03-22 | 2021-06-17 | +| 1.0 | 2021-01-21 | 2021-05-06 | + +### Backport policy +Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers. + +## CI/CD +We use [GitHub actions](https://github.com/scylladb/scylla-operator/actions/workflows/go.yaml?query=branch%3Amaster+event%3Apush) for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite. + +### Automated promotions + +| Git reference | Type | Container image | +| :----------------: | :----: | :--------------------------------------------------: | +| **master** | branch | docker.io/scylladb/scylla-operator:**latest** | +| **vX.Y** | branch | docker.io/scylladb/scylla-operator:**X.Y** | +| **vX.Y.Z** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z** | +| **vX.Y.Z-alpha.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-alpha.N** | +| **vX.Y.Z-beta.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-beta.N** | +| **vX.Y.Z-rc.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-rc.N** | + +### Generally available +GA images aren't build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate. + +## Support matrix + +Support matrix table shows the version requirements for a particular **scylla-operator** version. Be sure to match these requirements, otherwise some functionality will not work. + +| | v1.8 | v1.7 | v1.6 | v1.5 | v1.4 | v1.3 | v1.2 | v1.1 | v1.0 | +|:-----------------:|:----------:|:-----------------:|:--------------------:|:-----------:|:-----------:|:----------:|:----------:|:----------:|:----------:| +| Kubernetes | `>=1.21` | `>=1.20 && <1.25` | `>=1.19.10 && <1.25` | `>=1.19.10` | `>=1.19.10` | `>=1.19` | `>=1.19` | `>=1.11` | `>=1.11` | +| Scylla OS | `>=4.6` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.2` | `>=4.2` | `>=4.0` | `>=4.0` | +| Scylla Enterprise | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | +| Scylla Manager | `>=2.6` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | +| Scylla Monitoring | `>=4.0` | `>=3.0` | `>=3.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | diff --git a/v1.8/_sources/scylla_cluster_crd.md.txt b/v1.8/_sources/scylla_cluster_crd.md.txt new file mode 100644 index 00000000000..75d34f1a028 --- /dev/null +++ b/v1.8/_sources/scylla_cluster_crd.md.txt @@ -0,0 +1,188 @@ +# Scylla Cluster CRD + +Scylla database clusters can be created and configured using the `clusters.scylla.scylladb.com` custom resource definition (CRD). + +Please refer to the the [user guide walk-through](generic.md) for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD. + +## Sample + +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: simple-cluster + namespace: scylla +spec: + version: 2.3.1 + repository: scylladb/scylla + developerMode: true + cpuset: false + automaticOrphanedNodeCleanup: true + repairs: + - name: "weekly us-east-1 repair" + intensity: "2" + interval: "7d" + dc: ["us-east-1"] + backups: + - name: "daily users backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "1d" + keyspace: ["users"] + - name: "weekly full cluster backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "7d" + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500G + storageClassName: local-raid-disks + resources: + requests: + cpu: 8 + memory: 32Gi + limits: + cpu: 8 + memory: 32Gi + placement: + nodeAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + nodeSelectorTerms: + - matchExpressions: + - key: failure-domain.beta.kubernetes.io/region + operator: In + values: + - us-east-1 + - key: failure-domain.beta.kubernetes.io/zone + operator: In + values: + - us-east-1a + tolerations: + - key: role + operator: Equal + value: scylla-clusters + effect: NoSchedule +``` + +## Settings Explanation + +### Cluster Settings + +* `version`: The version of Scylla to use. It is used as the image tag to pull. +* `agentVersion`: The version of Scylla Manager Agent to use. It is used as the image tag to pull. +* `repository`: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `agentRepository`: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `developerMode`: Optional field. If it's true, then Scylla is started in [developer mode](https://www.scylladb.com/2016/09/13/test-dev-env/). This setting is for shared test/dev environments. +* `cpuset`: Optional field. If it's true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and only specify limits in resources. +* `automaticOrphanedNodeCleanup`: Optional field. Controls if automatic orphan node cleanup should be performed. +* `alternator`: Optional field. Defines Alternator configuration. + * `port`: Port on which to bind to Alternator API. + * `writeIsolation`: *required* Desired write isolation. +* `genericUpgrade`: Optional field. Defines GenericUpgrade configuration. + * `failureStrategy`: specifies which logic is executed when upgrade failure happens. Currently only `Retry` is supported. + * `pollInterval`: specifies how often upgrade logic polls on state updates. + Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect + overall time spent during upgrade. +* `datacenter`: Datacenter definition. +* `sysctls`: Optional field. Sysctl properties to be applied during initialization. +* `scyllaArgs`: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it. +* `network`: Optional field. Allows to customize network parameters. + * `hostNetworking`: controls if host networking should be enabled. + * `dnsPolicy`: controls Scylla Pod DNS Policy. See [details](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy). +* `repairs`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. +* `backups`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. + + +In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups. + +### Scylla Manager settings + +Tasks are scheduled only when Scylla Manager is deployed in K8s cluster. + +Repairs: +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. Task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. The number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1", "!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `failFast` - Optional field. Stop repair on first error. +* `intensity` - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. + If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). + Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. + Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. + For Scylla clusters that **do not support row-level repair**, intensity can be a decimal between (0,1). + In that case it specifies percent of shards that can be repaired in parallel on a repair master node. + For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. + **Intensity is a number passed as string due to lack of support for float values in k8s controller runtime** +* `parallel` - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). + Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. + The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. + The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace", "!keyspace.table_prefix_*"]` +used to include or exclude keyspaces from repair. +* `smallTableThreshold` - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units `[B, MiB, GiB, TiB]` (default `"1GiB"`). + +Backups: + +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - Optional field. Specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. the number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1","!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace","!keyspace.table_prefix_*"]` used to include or exclude keyspaces from backup. +* `location` - Optional field. A list of backup locations in the format `[:]:` ex. `s3:my-bucket`. +The `:` part is optional and is only needed when different datacenters are being used to upload data to different locations. +`` Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are `s3` and `gcs`. +* `rateLimit` - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format `[:]`. +The `:` part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100). +* `retention` - Optional field. The number of backups which are to be stored (default 3). +* `snapshotParallel` - Optional field. A list of snapshot parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set, the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. +* `uploadParallel` - Optional field. A list of upload parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. + + +### Datacenter Settings + +* `name`: Name of the datacenter. Usually, a datacenter corresponds to a region. +* `racks`: List of racks for the specific datacenter. + +### Rack Settings + +* `name`: Name of the rack. Usually, a rack corresponds to an availability zone. +* `members`: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don't call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node). +* `storage`: Defines the specs of the underlying storage. + * `capacity`: Capacity of the PersistentVolume to request. + * `storageClassName`: Optional field. [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes/) of PersistentVolume to request. +* `resources`: Defines the CPU and RAM resources for the Scylla Pods. + * `requests`: The minimum amount of resources needed to run a Scylla container. + * `cpu`: CPU requests. + * `memory`: RAM requests. + * `limits`: The maximum amount of resources that can be used by a Scylla container. + * `cpu`: CPU limits. + * `memory`: RAM limits. +* `agentResources`: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See `resources` for details. +* `volumes`: Optional field. Defines volumes available in Scylla Pod. See [details](https://kubernetes.io/docs/concepts/storage/volumes/). +* `volumeMounts`: Optional field. Defines which volumes will be attached to Scylla container. +* `agentVolumeMounts`: Optional field. Defines which volumes will be attached to Agent container. +* `scyllaConfig`: Optional field. name of custom config map which will be merged with Scylla config. +* `scyllaAgentConfig`: Optional field. name of custom secret which will be merged with Scylla Manager Agent config. +* `placement`: Optional field. Defines the placement of Scylla Pods. Has the following subfields: + * [`nodeAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature) + * [`podAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`podAntiAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`tolerations`](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration) diff --git a/v1.8/_sources/upgrade.md.txt b/v1.8/_sources/upgrade.md.txt new file mode 100644 index 00000000000..ab14157256b --- /dev/null +++ b/v1.8/_sources/upgrade.md.txt @@ -0,0 +1,184 @@ +# Upgrade of Scylla Operator + +This page describes Scylla Operator upgrade procedures. +There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps. + +## Upgrade via Helm + +Helm doesn't support managing CustomResourceDefinition resources ([#5871](https://github.com/helm/helm/issues/5871), [#7735](https://github.com/helm/helm/issues/7735)) +These are only created on first install and never updated. In order to update them, users have to do it manually. + +Replace `` with the name of your Helm release for Scylla Operator and replace `` with the version number you want to install: +1. Make sure Helm chart repository is up-to-date: + ``` + helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable + helm repo update + ``` +2. Update CRD resources. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + tmpdir=$( mktemp -d ) \ + && helm pull scylla-operator/scylla-operator --version --untar --untardir "${tmpdir}" \ + && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \ + | xargs kubectl apply + ``` +3. Update Scylla Operator + ``` + helm upgrade --version scylla-operator/scylla-operator + ``` + +## Upgrade via kubectl + +Replace `` with the version number you want to install: + +1. Checkout source code of version you want to use: + ``` + git checkout + ``` +2. Manifests use rolling minor version tag, you may want to pin it to specific version: + ``` + find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:^g" + ``` +3. Update Scylla Operator. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + kubectl apply -f deploy/operator + ``` + +--- + +## `v1.2.0` -> `v1.3.0` + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.3.0: + ``` + git checkout v1.3.0 + ``` +1. Update Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.1.0` -> `v1.2.0` + +1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones. + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.2.0: + ``` + git checkout v1.2.0 + ``` +1. Remove old scylla operator namespace - in our case it's called `scylla-operator-system`: + ``` + kubectl delete namespace scylla-operator-system --wait=true + ``` +1. Remove old webhooks: + ``` + kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration + kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration + ``` +1. Install Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.0.0` -> `v1.1.0` + +During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected. + +1. Get name of StatefulSet managing Scylla Operator + ```shell + kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager" + + NAME READY AGE + scylla-operator-controller-manager 1/1 95m + ``` + +1. Change probes and used container image by applying following patch: + ```yaml + spec: + template: + spec: + containers: + - name: manager + image: docker.io/scylladb/scylla-operator:1.1.0 + livenessProbe: + httpGet: + path: /healthz + port: 8080 + scheme: HTTP + readinessProbe: + $retainKeys: + - httpGet + httpGet: + path: /readyz + port: 8080 + scheme: HTTP + ``` + To apply above patch save it to file (`operator-patch.yaml` for example) and apply to Operator StatefulSet: + ```shell + kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)" + ``` + + +## `v0.3.0` -> `v1.0.0` + +***Note:*** There's an experimental migration procedure available [here](migration.md). + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common +kind which is easier to disambiguate. (`ScyllaCluster`). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide. + +1. Get list of existing Scylla clusters + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` +1. Delete each one of them + + ``` + kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster + ``` +1. Make sure you're on `v0.3.0` branch + ``` + git checkout v0.3.0 + ``` +1. Delete existing CRD and Operator + ``` + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0` version + ``` + git checkout v1.0.0 + ``` +1. Install new CRD and Scylla Operator + ``` + kubectl apply -f examples/common/operator.yaml + ``` +1. Migrate your existing Scylla Cluster definition. Change `apiVersion` and `kind` from: + ``` + apiVersion: scylla.scylladb.com/v1alpha1 + kind: Cluster + ``` + to: + ``` + apiVersion: scylla.scylladb.com/v1 + kind: ScyllaCluster + ``` +1. Once your cluster definition is ready, use `kubectl apply` to install fresh Scylla cluster. diff --git a/v1.8/_static/basic.css b/v1.8/_static/basic.css new file mode 100644 index 00000000000..bf18350b65c --- /dev/null +++ b/v1.8/_static/basic.css @@ -0,0 +1,906 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; 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+} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/v1.8/_static/check-solid.svg b/v1.8/_static/check-solid.svg new file mode 100644 index 00000000000..92fad4b5c0b --- /dev/null +++ b/v1.8/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/v1.8/_static/clipboard.min.js b/v1.8/_static/clipboard.min.js new file mode 100644 index 00000000000..54b3c463811 --- /dev/null +++ b/v1.8/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/v1.8/_static/copybutton.css b/v1.8/_static/copybutton.css new file mode 100644 index 00000000000..f1916ec7d1b --- /dev/null +++ b/v1.8/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/v1.8/_static/copybutton.js b/v1.8/_static/copybutton.js new file mode 100644 index 00000000000..2ea7ff3e217 --- /dev/null +++ b/v1.8/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/v1.8/_static/copybutton_funcs.js b/v1.8/_static/copybutton_funcs.js new file mode 100644 index 00000000000..dbe1aaad79c --- /dev/null +++ b/v1.8/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/v1.8/_static/css/main.css b/v1.8/_static/css/main.css new file mode 100644 index 00000000000..4ac01745289 --- /dev/null +++ b/v1.8/_static/css/main.css @@ -0,0 +1 @@ +@media print,screen 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details. + * + */ + +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + +/** + * make the code below compatible with browsers without + * an installed firebug like debugger +if (!window.console || !console.firebug) { + var names = ["log", "debug", "info", "warn", "error", "assert", "dir", + "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", + "profile", "profileEnd"]; + window.console = {}; + for (var i = 0; i < names.length; ++i) + window.console[names[i]] = function() {}; +} + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} + +/** + * Small JavaScript module for the documentation. + */ +var Documentation = { + + init : function() { + this.fixFirefoxAnchorBug(); + this.highlightSearchWords(); + this.initIndexTable(); + this.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS : {}, + PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; }, + LOCALE : 'unknown', + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext : function(string) { + var translated = Documentation.TRANSLATIONS[string]; + if (typeof translated === 'undefined') + return string; + return (typeof translated === 'string') ? translated : translated[0]; + }, + + ngettext : function(singular, plural, n) { + var translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated === 'undefined') + return (n == 1) ? singular : plural; + return translated[Documentation.PLURALEXPR(n)]; + }, + + addTranslations : function(catalog) { + for (var key in catalog.messages) + this.TRANSLATIONS[key] = catalog.messages[key]; + this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')'); + this.LOCALE = catalog.locale; + }, + + /** + * add context elements like header anchor links + */ + addContextElements : function() { + $('div[id] > :header:first').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this headline')). + appendTo(this); + }); + $('dt[id]').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this definition')). + appendTo(this); + }); + }, + + /** + * workaround a firefox stupidity + * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075 + */ + fixFirefoxAnchorBug : function() { + if (document.location.hash && $.browser.mozilla) + window.setTimeout(function() { + document.location.href += ''; + }, 10); + }, + + /** + * highlight the search words provided in the url in the text + */ + highlightSearchWords : function() { + var params = $.getQueryParameters(); + var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : []; + if (terms.length) { + var body = $('div.body'); + if (!body.length) { + body = $('body'); + } + window.setTimeout(function() { + $.each(terms, function() { + body.highlightText(this.toLowerCase(), 'highlighted'); + }); + }, 10); + $('') + .appendTo($('#searchbox')); + } + }, + + /** + * init the domain index toggle buttons + */ + initIndexTable : function() { + var togglers = $('img.toggler').click(function() { + var src = $(this).attr('src'); + var idnum = $(this).attr('id').substr(7); + $('tr.cg-' + idnum).toggle(); + if (src.substr(-9) === 'minus.png') + $(this).attr('src', src.substr(0, src.length-9) + 'plus.png'); + else + $(this).attr('src', src.substr(0, src.length-8) + 'minus.png'); + }).css('display', ''); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) { + togglers.click(); + } + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords : function() { + $('#searchbox .highlight-link').fadeOut(300); + $('span.highlighted').removeClass('highlighted'); + var url = new URL(window.location); + url.searchParams.delete('highlight'); + window.history.replaceState({}, '', url); + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar : function() { + $('input[name=q]').first().focus(); + }, + + /** + * make the url absolute + */ + makeURL : function(relativeURL) { + return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL; + }, + + /** + * get the current relative url + */ + getCurrentURL : function() { + var path = document.location.pathname; + var parts = path.split(/\//); + $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() { + if (this === '..') + parts.pop(); + }); + var url = parts.join('/'); + return path.substring(url.lastIndexOf('/') + 1, path.length - 1); + }, + + initOnKeyListeners: function() { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + return; + + $(document).keydown(function(event) { + var activeElementType = document.activeElement.tagName; + // don't navigate when in search box, textarea, dropdown or button + if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT' + && activeElementType !== 'BUTTON') { + if (event.altKey || event.ctrlKey || event.metaKey) + return; + + if (!event.shiftKey) { + switch (event.key) { + case 'ArrowLeft': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var prevHref = $('link[rel="prev"]').prop('href'); + if (prevHref) { + window.location.href = prevHref; + return false; + } + break; + case 'ArrowRight': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var nextHref = $('link[rel="next"]').prop('href'); + if (nextHref) { + window.location.href = nextHref; + return false; + } + break; + case 'Escape': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.hideSearchWords(); + return false; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case '/': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.focusSearchBar(); + return false; + } + } + }); + } +}; + +// quick alias for translations +_ = Documentation.gettext; + +$(document).ready(function() { + Documentation.init(); +}); diff --git a/v1.8/_static/documentation_options.js b/v1.8/_static/documentation_options.js new file mode 100644 index 00000000000..724e3825774 --- /dev/null +++ b/v1.8/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '', + LANGUAGE: 'None', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + 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Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2020-05-04T22:49Z + */ +( function( global, factory ) { + + "use strict"; + + if ( typeof module === "object" && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.5.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.5 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2020-03-14 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting
or other required elements. + thead: [ 1, "
", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px"; + tr.style.height = "1px"; + trChild.style.height = "9px"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = parseInt( trStyle.height ) > 3; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( + dataPriv.get( cur, "events" ) || Object.create( null ) + )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script + if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Contributing to Scylla Operator

+
+

Prerequisites

+

To develop on scylla-operator, your environment must have the following:

+
    +
  1. Go 1.13

    +
      +
    • Make sure GOPATH is set to GOPATH=$HOME/go.

    • +
    +
  2. +
  3. Kustomize v3.1.0

  4. +
  5. kubebuilder v2.3.1

  6. +
  7. Docker

  8. +
  9. Git client installed

  10. +
  11. Github account

  12. +
+

To install all dependencies (Go, kustomize, kubebuilder, dep), simply run:

+
./install-dependencies.sh
+
+
+
+
+

Initial Setup

+
+

Create a Fork

+

From your browser navigate to http://github.com/scylladb/scylla-operator and click the “Fork” button.

+
+
+

Clone Your Fork

+

Open a console window and do the following:

+
# Create the scylla operator repo path
+mkdir -p $GOPATH/src/github.com/scylladb
+
+# Navigate to the local repo path and clone your fork
+cd $GOPATH/src/github.com/scylladb
+
+# Clone your fork, where <user> is your GitHub account name
+git clone https://github.com/<user>/scylla-operator.git
+
+
+
+
+

Add Upstream Remote

+

First you will need to add the upstream remote to your local git:

+
# Add 'upstream' to the list of remotes
+git remote add upstream https://github.com/scylladb/scylla-operator.git
+
+# Verify the remote was added
+git remote -v
+
+
+

Now you should have at least origin and upstream remotes. You can also add other remotes to collaborate with other contributors.

+
+
+
+

Development

+

To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch.

+
+

Building the project

+

You can build the project using the Makefile commands:

+
    +
  • Open the Makefile and change the IMG environment variable to a repository you have access to.

  • +
  • Run make docker-push and wait for the image to be built and uploaded in your repo.

  • +
+
+
+

Create a Branch

+

From a console, create a new branch based on your fork and start working on it:

+
# Ensure all your remotes are up to date with the latest
+git fetch --all
+
+# Create a new branch that is based off upstream master.  Give it a simple, but descriptive name.
+# Generally it will be two to three words separated by dashes and without numbers.
+git checkout -b feature-name upstream/master
+
+
+

Now you are ready to make the changes and commit to your branch.

+
+
+

Updating Your Fork

+

During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to rebase your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean.

+

Whenever you need to update your local repository, you never want to merge. You always will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (git stash save -u "<some description>").

+
git fetch --all
+git rebase upstream/master
+
+
+

Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the Git documentation, it will be well worth it. In a nutshell, rebasing does the following:

+
    +
  • “Unwinds” your local commits. Your local commits are removed temporarily from the history.

  • +
  • The latest changes from upstream are added to the history

  • +
  • Your local commits are re-applied one by one

  • +
  • If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase.

  • +
  • When done rebasing, you will see all of your commits in the history.

  • +
+
+
+
+

Submitting a Pull Request

+

Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream.

+

In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged.

+
+

Commit History

+

To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits.

+
# Inspect your commit history to determine if you need to squash commits
+git log
+
+# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean.
+# In this example, the last 5 commits will be opened in the git rebase tool.
+git rebase -i HEAD~5
+
+
+

Once your commit history is clean, ensure you have based on the latest upstream before you open the PR.

+
+
+

Commit messages

+

Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good!

+

If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed.

+

Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you’ve forgotten everything about what you just did, and you need to get up to speed quickly.

+

If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don’t want to close the associated issue just put #1234 and the change will get linked into the issue.

+

Here is an example of a short commit message:

+
sidecar: log on reconcile loop - fixes #1234
+
+
+

And here is an example of a longer one:

+

+api: now supports host networking (#1234)
+
+The operator CRD now has a "network" property that can be used to
+select host networking as well as setting the apropriate DNS policy.
+
+Fixes #1234
+
+
+
+
+

Submitting

+

Go to the Scylla Operator github to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR.

+

After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/eks.html b/v1.8/eks.html new file mode 100644 index 00000000000..54590f7a124 --- /dev/null +++ b/v1.8/eks.html @@ -0,0 +1,729 @@ + + + + + + + + + + + + + Deploying Scylla on EKS | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on EKS

+

This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won’t work with different machine tiers. +It sets up the kubelets on EKS nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+
+# From inside the examples/eks folder
+cd examples/eks
+./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION"
+
+
+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

EKS Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+CLUSTER_NAME=scylla-demo
+
+
+
+
+

Creating an EKS cluster

+

For this guide, we’ll create an EKS cluster with the following:

+
    +
  • A NodeGroup of 3 i3-2xlarge Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having scylla-clusters toleration.

  • +
+
  - name: scylla-pool
+    instanceType: i3.2xlarge
+    desiredCapacity: 3
+    labels:
+      pool: "scylla-pool"
+    taints:
+      role: "scylla-clusters:NoSchedule"
+    ssh:
+      allow: true
+    kubeletExtraConfig:
+      cpuManagerPolicy: static
+
+
+
    +
  • A NodeGroup of 4 c4.2xlarge Nodes to deploy cassandra-stress later on. These nodes will only accept pods having cassandra-stress toleration.

  • +
+
  - name: cassandra-stress-pool
+    instanceType: c4.2xlarge
+    desiredCapacity: 4
+    labels:
+      pool: "cassandra-stress-pool"
+    taints:
+      role: "cassandra-stress:NoSchedule"
+    ssh:
+      allow: true
+
+
+
    +
  • A NodeGroup of 1 i3.large Node, where the monitoring stack and operator will be deployed.

  • +
+
  - name: monitoring-pool
+    instanceType: i3.large
+    desiredCapacity: 1
+    labels:
+      pool: "monitoring-pool"
+    ssh:
+      allow: true
+
+
+
+
+
+

Installing Required Tools

+
+

Installing script third party dependencies

+

Script requires several dependencies:

+
    +
  • Helm - See: https://docs.helm.sh/using_helm/#installing-helm

  • +
  • eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

  • +
  • kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/

  • +
+
+
+

Install the local provisioner

+

We deploy the local volume provisioner, which will discover their mount points and make them available as PersistentVolumes.

+
helm install local-provisioner examples/common/provisioner
+
+
+
+
+

Deploy tuning DaemonSet

+

Deploy tuning DaemonSet, this will configure your disks and apply several optimizations

+
kubectl apply -f node-setup-daemonset.yaml
+
+
+
+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting an EKS cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
eksctl delete cluster "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/generic.html b/v1.8/generic.html new file mode 100644 index 00000000000..85bfb79b42f --- /dev/null +++ b/v1.8/generic.html @@ -0,0 +1,952 @@ + + + + + + + + + + + + + Deploying Scylla on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on a Kubernetes Cluster

+

This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment:

+ +
+

Prerequisites

+ +
+
+

Running locally

+

Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and Minikube makes it a breeze.

+

We need to give minikube a little bit more resources than default so start minikube like this:

+
minikube start --cpus=6
+
+
+

Then make kubectl aware of this local installation like this:

+
eval $(minikube docker-env)
+
+
+
+
+

Download Scylla Operator

+

In this guide you will be using the examples and manifests from Scylla Operator repository, so start off by cloning it to your local machine.

+
git clone git@github.com:scylladb/scylla-operator.git
+cd scylla-operator
+
+
+
+
+

Deploy Cert Manager

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

This will install Cert Manager to provision a self-signed certificate.

+

Once it’s deployed, wait until Cert Manager is ready:

+
kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io
+kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook
+
+
+
+
+

Deploy Scylla Operator

+

Deploy the Scylla Operator using the following commands:

+
kubectl apply -f examples/common/operator.yaml
+
+
+

This will install the operator in namespace scylla-operator. +Wait until it’s ready:

+
kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
+kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
+
+
+

If you want to check the logs of the operator you can do so with:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+
+
+

Create and Initialize a Scylla Cluster

+

Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the clusters.scylla.scylladb.com resource. +Some of that resource’s values are configurable, so feel free to browse cluster.yaml and tweak the settings to your liking. +Full details for all the configuration options can be found in the Scylla Cluster CRD documentation.

+

When you are ready to create a Scylla cluster, simply run:

+
kubectl create -f examples/generic/cluster.yaml
+
+
+

We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment.

+
kubectl -n scylla get ScyllaCluster
+
+
+

Checking the pods that are created is as easy as:

+
kubectl -n scylla get pods
+
+
+

The output should be something like:

+
NAME                                    READY   STATUS    RESTARTS   AGE
+simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          9m49s
+simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          7m43s
+simple-cluster-us-east-1-us-east-1a-2   2/2     Running   0          6m46s
+
+
+

It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER as specified in cluster.yaml.

+

In the above example we have the following properties:

+
    +
  • CLUSTER_NAME: simple-cluster

  • +
  • DATACENTER_NAME: us-east-1

  • +
  • RACK_NAME: us-east-1a

  • +
  • INSTANCE_NUMBER: An automatically generated number attached to the pod name.

  • +
+

We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want.

+

To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in cluster.yaml:

+
kubectl -n scylla get pod -l app=scylla
+
+
+

You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run:

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+

Checking the logs of the running scylla instances can be done like this:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla
+
+
+
+

Configure host networking

+

To squeeze the most out of your deployment it is sometimes necessary to employ host networking. +To enable this the CRD allows for specifying a network parameter as such:

+
version: 4.0.0
+  agentVersion: 2.0.2
+  cpuset: true
+  network:
+    hostNetworking: true
+
+
+

This will result in hosts network to be used for the Scylla Stateful Set deployment.

+
+
+

Configure container kernel parameters

+

Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property sysctls that is a list of the desired key-value pairs to set.

+

For example: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls tofs.aio-max-nr=N.

+
spec:
+  sysctls:
+  - "fs.aio-max-nr=2097152"
+
+
+
+
+

Deploying Alternator

+

The operator is also capable of deploying Alternator instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the cluster.yaml file from this:

+
spec:
+  version: 4.0.0
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

to this:

+
spec:
+  version: 4.0.0
+  alternator:
+    port: 8000
+    writeIsolation: only_rmw_uses_lwt
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

You can specify whichever port you want.

+

You must provide desired write isolation, supported values are: “always”, “forbid_rmw”, “only_rmw_uses_lwt”. +Difference between those isolation levels can be found in Scylla Alternator documentation.

+

Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster.

+
+
+
+

Accessing the Database

+
    +
  • From kubectl:

  • +
+

To get a cqlsh shell in your new Cluster:

+
kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh
+> DESCRIBE KEYSPACES;
+
+
+
    +
  • From inside a Pod:

  • +
+

When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service’s name follows the convention <cluster-name>-client. +You can see this Service in your cluster by running:

+
kubectl -n scylla describe service simple-cluster-client
+
+
+

Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here’s an example using the Python Driver:

+
from cassandra.cluster import Cluster
+
+cluster = Cluster(['simple-cluster-client.scylla.svc'])
+session = cluster.connect()
+
+
+

If you are running the Alternator you can access the API on the port you specified using plain http.

+
+
+

Configure Scylla

+

The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called scylla.yaml that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration.

+
    +
  • Create a ConfigMap the default name that the operator uses is scylla-config:

  • +
+
kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml
+
+
+
    +
  • Wait for the mount to propagate and then restart the cluster:

  • +
+
kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a
+
+
+
    +
  • The new config should be applied automatically by the operator, check the logs to be sure.

  • +
+

Configuring cassandra-rackdc.properties is done by adding the file to the same mount as scylla.yaml.

+
kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f -
+
+
+

The operator will then apply the overridable properties prefer_local and dc_suffix if they are available in the provided mounted file.

+
+
+

Configure Scylla Manager Agent

+

The operator creates a second container for each scylla instance that runs Scylla Manager Agent. +This container serves as a sidecar and it’s the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups.

+

To configure the agent you just create a new secret called scylla-agent-config-secret and populate it with the contents in the scylla-manager-agent.yaml file like this:

+
kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml
+
+
+

See Scylla Manager Agent configuration for a complete reference of the Scylla Manager agent config file.

+
+

Scylla Manager Agent auth token

+

Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it’s empty. +To check which value is being used, decode content of <cluster-name>-auth-token secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart.

+
+
+
+

Set up monitoring

+

To set up monitoring using Prometheus and Grafana follow this guide.

+
+
+

Scale Up

+

The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale up a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • To add a new rack, append the racks list with a new rack. Remember to choose a different rack name for the new rack.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Benchmark with cassandra-stress

+

After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster.

+
+

Because cassandra-stress doesn’t scale well to multiple cores, we use multiple jobs with a small core count for each

+
+
# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each.
+# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec.
+hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000
+kubectl apply -f scripts/cassandra-stress.yaml
+
+
+

Make sure you set the proper arguments in case you have altered things such as name or namespace.

+
./hack/cass-stress-gen.py -h
+usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT]
+                          [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR]
+
+Generate cassandra-stress job templates for Kubernetes.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --num-jobs NUM_JOBS   number of Kubernetes jobs to generate - defaults to 1
+  --name NAME           name of the generated yaml file - defaults to cassandra-stress
+  --namespace NAMESPACE
+                        namespace of the cassandra-stress jobs - defaults to "default"
+  --scylla-version SCYLLA_VERSION
+                        version of scylla server to use for cassandra-stress - defaults to 4.0.0
+  --host HOST           ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc
+  --cpu CPU             number of cpus that will be used for each job - defaults to 1
+  --memory MEMORY       memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu
+  --ops OPS             number of operations for each job - defaults to 10000000
+  --threads THREADS     number of threads used for each job - defaults to 50 * cpu
+  --limit LIMIT         rate limit for each job - defaults to no rate-limiting
+  --connections-per-host CONNECTIONS_PER_HOST
+                        number of connections per host - defaults to number of cpus
+  --print-to-stdout     print to stdout instead of writing to a file
+  --nodeselector NODESELECTOR
+                        nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla
+
+
+

While the benchmark is running, open up Grafana and take a look at the monitoring metrics.

+

After the Jobs finish, clean them up with:

+
kubectl delete -f scripts/cassandra-stress.yaml
+
+
+
+
+

Scale Down

+

The operator supports scale down of a rack. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale down a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Clean Up

+

To clean up all resources associated with this walk-through, you can run the commands below.

+

NOTE: this will destroy your database and delete all of its associated data.

+
kubectl delete -f examples/generic/cluster.yaml
+kubectl delete -f examples/common/operator.yaml
+kubectl delete -f examples/common/cert-manager.yaml
+
+
+
+
+

Troubleshooting

+

If the cluster does not come up, the first step would be to examine the operator’s logs:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+

If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/genindex.html b/v1.8/genindex.html new file mode 100644 index 00000000000..fc2bf2331be --- /dev/null +++ b/v1.8/genindex.html @@ -0,0 +1,560 @@ + + + + + + + + + + + + + Index | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ + + +
+ + + + + +
+ + +
+ +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/gke.html b/v1.8/gke.html new file mode 100644 index 00000000000..2c468d4b3e7 --- /dev/null +++ b/v1.8/gke.html @@ -0,0 +1,773 @@ + + + + + + + + + + + + + Deploying Scylla on GKE | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on GKE

+

This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+GCP_USER=$(gcloud config list account --format "value(core.account)")
+GCP_PROJECT=$(gcloud config list project --format "value(core.project)")
+GCP_ZONE=us-west1-b
+
+# From inside the examples/gke folder
+cd examples/gke
+./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE"
+
+# Example:
+# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b
+
+
+

:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region.

+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

Google Kubernetes Engine Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
GCP_USER=$( gcloud config list account --format "value(core.account)" )
+GCP_PROJECT=$( gcloud config list project --format "value(core.project)" )
+GCP_REGION=us-west1
+GCP_ZONE=us-west1-b
+CLUSTER_NAME=scylla-demo
+CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" )
+
+
+
+
+

Creating a GKE cluster

+

First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called systemconfig.yaml with the following content:

+
kubeletConfig:
+  cpuManagerPolicy: static
+
+
+

Then we’ll create a GKE cluster with the following:

+
    +
  1. A NodePool of 2 n1-standard-8 Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes.

    +
    gcloud container \
    +clusters create "${CLUSTER_NAME}" \
    +--cluster-version "${CLUSTER_VERSION}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-8" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--image-type "UBUNTU_CONTAINERD" \
    +--system-config-from-file=systemconfig.yaml \
    +--enable-stackdriver-kubernetes \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  2. +
  3. A NodePool of 2 n1-standard-32 Nodes to deploy cassandra-stress later on.

    +
    gcloud container --project "${GCP_PROJECT}" \
    +node-pools create "cassandra-stress-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--zone "${GCP_ZONE}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--node-taints role=cassandra-stress:NoSchedule \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  4. +
  5. A NodePool of 4 n1-standard-32 Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local SSDs attached, which are combined into a RAID0 array by using gcloud beta feature ephemeral-storage. It is important to disable autoupgrade and autorepair. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it’s better to handle upgrades manually, with more control over the process and error handling.

    +
    gcloud beta container \
    +node-pools create "scylla-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "4" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--ephemeral-storage local-ssd-count="8" \
    +--node-taints role=scylla-clusters:NoSchedule \
    +--node-labels scylla.scylladb.com/gke-ephemeral-storage-local-ssd=true \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  6. +
+
+
+

Setting Yourself as cluster-admin

+
+

(By default GKE doesn’t give you the necessary RBAC permissions)

+
+

Get the credentials for your new cluster

+
gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}"
+
+
+

Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission container.clusterRoleBindings.create. +The easiest way to obtain this permission is to enable the Kubernetes Engine Admin role for your user in the GCP IAM web interface.

+
kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}"
+
+
+
+
+
+

Installing Required Tools

+
+

Installing Helm

+

If you don’t have Helm installed, Go to the helm docs to get the binary for your distro.

+
+
+

Install xfs-formatter DaemonSet

+

To run Scylla, it is necessary to convert ephemeral storage’s filesystem to xfs. Deploy the xfs-formatter DaemonSet to have it taken care of. +Unfortunately, GKE is only able to provision the ephemeral storage with ext4 filesystem while Scylla requires xfs filesystem. Deploying the xfs-format DaemonSet will format the storage as xfs and prevent GKE from reformatting it back to ext4.

+

Note that despite our best efforts, this solution is only a workaround. Its robustness depends on GKE’s disk formatting logic remaining unchanged, for which there is no guarantee.

+
kubectl apply -f examples/gke/xfs-formatter-daemonset.yaml
+
+
+
+
+

Install the local provisioner

+

Afterwards, deploy the local volume provisioner, which will discover the RAID0 arrays’ mount points and make them available as PersistentVolumes.

+
helm install local-provisioner examples/common/provisioner
+
+
+
+
+
+

Deploy Scylla cluster

+

In order for the example to work you need to modify the cluster definition in the following way:

+
sed -i "s/<gcp_region>/${GCP_REGION}/g;s/<gcp_zone>/${GCP_ZONE}/g" examples/gke/cluster.yaml
+
+
+

This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created.

+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to install the operator and launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting a GKE cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/helm.html b/v1.8/helm.html new file mode 100644 index 00000000000..2326f0cd256 --- /dev/null +++ b/v1.8/helm.html @@ -0,0 +1,925 @@ + + + + + + + + + + + + + Deploying Scylla stack using Helm Charts | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla stack using Helm Charts

+

In this example we will install Scylla stack on Kubernetes. This includes the following components:

+
    +
  • Scylla Operator

  • +
  • Scylla Manager

  • +
  • Scylla

  • +
+

We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator.

+
+

Prerequisites

+
    +
  • Kubernetes 1.16+

  • +
  • Helm 3+

  • +
+
+
+

TL;DR

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+kubectl apply -f examples/common/cert-manager.yaml 
+helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator
+helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager
+helm install scylla scylla/scylla --create-namespace --namespace scylla
+
+
+
+
+

Deploy Cert Manager

+

This step is optional if you want to use your own certificate. +If you don’t have one, make sure to not disable autogeneration using Scylla Operator Helm Chart.

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

Once it’s deployed, wait until all Cert Manager pods will enter into Running state:

+
kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s
+
+
+
+
+

Helm Chart repository

+

To install Scylla Helm Chart repository execute the following commands:

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+
+
+

Then you can search through repository, it should contain at least three Helm charts:

+
helm search repo scylla
+NAME                   CHART VERSION   APP VERSION     DESCRIPTION                                       
+scylla/scylla          1.0.1           v1.0.1          Scylla is a close-to-the-hardware rewrite of Ca...
+scylla/scylla-manager  1.0.1           v1.0.1          Scylla Manager automates database operations.     
+scylla/scylla-operator 1.0.1           v1.0.1          Scylla Operator is a Kubernetes Operator for ma...
+
+
+

All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit.

+
+
+

Scylla Operator Chart

+

This chart is very simple, most interesting customizable fields are image, resources and webhook. +All others can be looked up in Chart source in Scylla Operator repository.

+
+

image

+

Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change pullPolicy if default one does not +fullfill your needs. In Kubernetes documentation you +can read more about different pull policies.

+

Image URL will be composed based on these fields in follwing pattern: +repository/scylla-operator:tag

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+
+
+

resources

+

You can customize how much resources will be allocated for Operator pods via resource field:

+
resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 32Mi
+
+
+

To read more about resource specification, follow Kubernetes documentation.

+
+
+

webhook

+

Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate.

+

createSelfSignedCertificate specifies whether a self-signed certificate should be created using Cert Manager +certificateSecretName: name of a secret containing custom certificate.

+
webhook:
+  createSelfSignedCertificate: true
+  certificateSecretName: ""
+
+
+
+
+

Customization

+

You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values.

+

You can find an example in Scylla Operator repository under examples/helm/values.operator.yaml

+
+
+

Installation

+

To deploy Scylla Operator using customized values file execute the following:

+
helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator
+
+
+
+
+
+

Scylla Helm Chart

+

Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it.

+
+

Customization

+

Versions of images used in the cluster can be set via scyllaImage and agentImage

+
scyllaImage:
+  repository: scylladb/scylla
+  tag: 4.3.0
+
+agentImage:
+  repository: scylladb/scylla-manager-agent
+  tag: 2.2.1
+
+
+

A minimal Scylla cluster can be expressed as:

+
datacenter: us-east-1
+racks:
+- name: us-east-1b
+  members: 2
+  storage:
+    capacity: 5G
+  resources:
+    limits:
+      cpu: 1
+      memory: 1Gi
+    requests:
+      cpu: 1
+      memory: 1Gi
+
+
+

Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory.

+

For other customizable fields, please refer to ScyllaCluster CRD definition. +CRD Rack Spec and Helm Chart Rack should have the same fields.

+
+
+

Installation

+

To deploy Scylla cluster using customzied values file execute the following command:

+
helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla
+
+
+

Scylla Operator will provision this cluster on your K8s environment.

+
+
+
+

Scylla Manager Helm Chart

+

Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster.

+

To read more about Scylla Manager see Manager guide.

+
+

Scylla Manager

+

To set version of used Scylla Manager you can use image field:

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: 2.2.1
+
+
+

To control how many resources are allocated for Scylla Manager use resource field:

+
resources:
+  limits:
+    cpu: 500m
+    memory: 500Mi
+  requests:
+    cpu: 500m
+    memory: 500Mi
+
+
+
+
+

Scylla Manager Controller

+

Similarly Scylla Manager Controller image can be customized:

+
controllerImage:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+

And allocated resources:

+
controllerResources:
+  limits:
+    cpu: 100m
+    memory: 30Mi
+  requests:
+    cpu: 100m
+    memory: 20Mi
+
+
+
+
+

Scylla

+

To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It’s definition should land as a scylla field.

+
+
+

Customization

+

All others customizable fields can be looked up in Chart source in Scylla Operator repository.

+
+
+

Installation

+

To deploy Scylla Manager using customized values file execute the following command:

+
helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager
+
+
+
+
+
+

Results

+

Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn’t it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces.

+

Scylla Operator:

+
$ kubectl -n scylla-operator get all
+
+NAME                                   READY   STATUS    RESTARTS   AGE
+pod/scylla-operator-5dbcb54f5c-vjm4m   1/1     Running   0          51s
+pod/scylla-operator-5dbcb54f5c-wfjbw   1/1     Running   0          51s
+
+NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
+service/scylla-operator-webhook   ClusterIP   10.105.207.130   <none>        443/TCP   51s
+
+NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-operator   2/2     2            2           51s
+
+NAME                                         DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-operator-5dbcb54f5c   2         2         2       51s
+
+
+

Operator is running!

+

Scylla Manager:

+
$ kubectl -n scylla-manager get all 
+
+NAME                                             READY   STATUS    RESTARTS   AGE
+pod/scylla-manager-669db64dd-bcm4v               1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-drbth   1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-rhwqx   1/1     Running   0          89s
+
+NAME                            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
+service/scylla-manager          ClusterIP   10.105.231.53   <none>        80/TCP,5090/TCP     89s
+service/scylla-manager-client   ClusterIP   None            <none>        9180/TCP,5090/TCP   89s
+
+NAME                                        READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-manager              1/1     1            1           89s
+deployment.apps/scylla-manager-controller   2/2     2            2           89s
+
+NAME                                                   DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-manager-669db64dd               1         1         1       89s
+replicaset.apps/scylla-manager-controller-844ccc56c4   2         2         2       89s
+
+
+

Good to go, ready to serve!

+

Scylla itself:

+
$ kubectl -n scylla get all        
+
+NAME                                READY   STATUS    RESTARTS   AGE
+pod/scylla-us-east-1-us-east-1b-0   2/2     Running   0          5m58s
+pod/scylla-us-east-1-us-east-1b-1   2/2     Running   0          4m29s
+
+NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
+service/scylla-client                   ClusterIP   None           <none>        9180/TCP,5090/TCP                                                 5m59s
+service/scylla-us-east-1-us-east-1b-0   ClusterIP   10.43.149.92   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   5m58s
+service/scylla-us-east-1-us-east-1b-1   ClusterIP   10.43.49.0     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   4m29s
+
+NAME                                           READY   AGE
+statefulset.apps/scylla-us-east-1-us-east-1b   2/2     5m59s
+
+
+

Two running nodes, exactly what we were asking for.

+
+
+

Monitoring

+

To spin up a Prometheus monitoring refer to monitoring guide.

+

Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor:

+
serviceMonitor:
+  create: false
+
+
+

Change create to true and update your current deployment using:

+
helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml
+
+
+

Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics.

+
+
+

Cleanup

+

To remove these applications you can simply uninstall them using Helm CLI:

+
helm uninstall scylla -n scylla
+helm uninstall scylla-manager -n scylla-manager
+helm uninstall scylla-operator -n scylla-operator
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/index.html b/v1.8/index.html new file mode 100644 index 00000000000..6a0d3a487d8 --- /dev/null +++ b/v1.8/index.html @@ -0,0 +1,604 @@ + + + + + + + + + + + + + Scylla Operator Documentation | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Operator Documentation

+
+
+

Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades.

+_images/logo.png +

For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University.

+

scylla-operator is a Kubernetes Operator for managing Scylla clusters.

+

Currently it supports:

+
    +
  • Deploying multi-zone clusters

  • +
  • Scaling up or adding new racks

  • +
  • Scaling down

  • +
  • Monitoring with Prometheus and Grafana

  • +
  • Integration with Scylla Manager

  • +
  • Dead node replacement

  • +
  • Version Upgrade

  • +
  • Backup

  • +
  • Repairs

  • +
  • Autohealing

  • +
  • Monitoring with Prometheus and Grafana

  • +
+

Choose a topic to begin:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/known_issues.html b/v1.8/known_issues.html new file mode 100644 index 00000000000..8f9ab551565 --- /dev/null +++ b/v1.8/known_issues.html @@ -0,0 +1,601 @@ + + + + + + + + + + + + + Known issues | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Known issues

+
+

Scylla Manager does not boot up on Minikube

+

If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for TRUNCATE queries.

+
+
+

TRUNCATE queries does not work on Minikube

+

The TRUNCATE queries requires hairpinning to be enabled. On minikube this is disabled by default.

+

To fix it execute the following command:

+
minikube ssh sudo ip link set docker0 promisc on
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/manager.html b/v1.8/manager.html new file mode 100644 index 00000000000..a8e20ad61ab --- /dev/null +++ b/v1.8/manager.html @@ -0,0 +1,812 @@ + + + + + + + + + + + + + Deploying Scylla Manager on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla Manager on a Kubernetes Cluster

+

Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way.

+

Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager Proprietary Software License Agreement for details.

+
+

Prerequisites

+ +
+
+

Architecture

+

Scylla Manager in K8s consist of:

+
    +
  • Dedicated Scylla Cluster

    +

    Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace.

    +
  • +
  • Scylla Manager Controller

    +

    Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states.

    +
      +
    1. What user wants - task definition in CRD.

    2. +
    3. What Controller registered - Task name to Task ID mapping - CRD status.

    4. +
    5. Scylla Manager task listing - internal state of Scylla Manager.

    6. +
    +

    When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling.

    +
  • +
  • Scylla Manager

    +

    Regular Scylla Manager, the same used in cloud and bare metal deployments.

    +
  • +
+
+
+

Deploy Scylla Manager

+

Deploy the Scylla Manager using the following commands:

+
kubectl apply -f examples/common/manager.yaml
+
+
+

This will install the Scylla Manager in the scylla-manager namespace. +You can check if the Scylla Manager is up and running with:

+
kubectl -n scylla-manager get pods
+NAME                                               READY   STATUS    RESTARTS   AGE
+scylla-manager-cluster-manager-dc-manager-rack-0   2/2     Running   0          37m
+scylla-manager-controller-0                        1/1     Running   0          28m
+scylla-manager-scylla-manager-7bd9f968b9-w25jw     1/1     Running   0          37m
+
+
+

As you can see there are three pods:

+
    +
  • scylla-manager-cluster-manager-dc-manager-rack-0 - is a single node Scylla cluster.

  • +
  • scylla-manager-controller-0 - Scylla Manager Controller.

  • +
  • scylla-manager-scylla-manager-7bd9f968b9-w25jw - Scylla Manager.

  • +
+

To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command:

+
kubectl -n scylla-manager logs scylla-manager-controller-0
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+
+
+

To check logs of Scylla Manager itself, use following command:

+
kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+
+
+

If there are no errors in the logs, let’s spin a Scylla Cluster.

+
+
+

Cluster registration

+

When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster.

+

See generic tutorial to spawn your cluster.

+

Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager.

+

Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager.

+
kubectl -n scylla describe Cluster
+
+[...]
+Status:
+ Manager Id:  d1d532cd-49f2-4c97-9263-25126532803b
+ Racks:
+   us-east-1a:
+     Members:        3
+     Ready Members:  3
+     Version:        4.0.0
+
+
+

You can use this ID to talk to Scylla Manager using sctool CLI installed in Scylla Manager Pod. +You can also use Cluster name in namespace/cluster-name format.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator).

+

In this task listing we can see CQL and REST healthchecks.

+
+
+

Task scheduling

+

You can either define tasks prior Cluster creation, or for existing Cluster. +Let’s edit already running cluster definition to add repair and backup task.

+
kubectl -n scylla edit Cluster simple-cluster
+
+
+

Add following task definition to Cluster spec:

+
  repairs:
+    - name: "users repair"
+      keyspace: ["users"]
+      interval: "1d"
+  backup:
+    - name: "weekly backup"
+      location: ["s3:cluster-backups"]
+      retention: 3
+      interval: "7d"
+    - name: "daily backup"
+      location: ["s3:cluster-backups"]
+      retention: 7
+      interval: "1d"
+
+
+

For full task definition configuration consult Scylla Cluster CRD.

+

Note: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up.

+

Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372                 │ -L s3:cluster-backups  --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d)  │ NEW    │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a                 │                                      │ 23 Sep 20 14:38:42 CEST        │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly.

+

To check progress of run you can use following command:

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a
+Status:         RUNNING
+Start time:     23 Sep 20 14:38:42 UTC
+Duration:       13s
+Progress:       2.69%
+Datacenters:
+  - us-east-1
++--------------------+-------+
+| system_auth        | 8.06% |
+| system_distributed | 0.00% |
+| system_traces      | 0.00% |
++--------------------+-------+
+
+
+

Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing.

+
+
+

Clean Up

+

To clean up all resources associated with Scylla Manager, you can run the commands below.

+

NOTE: this will destroy your Scylla Manager database and delete all of its associated data.

+
kubectl delete -f examples/common/manager.yaml
+
+
+
+
+

Troubleshooting

+

Manager is not running

+

If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs:

+
kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller
+kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

My task wasn’t scheduled

+

If your task wasn’t scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs.

+

Example:

+

Following status describes error when backup task cannot be scheduled, due to lack of access to bucket:

+
Status:
+  Backups:
+    Error:     create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug"
+    Id:        00000000-0000-0000-0000-000000000000
+    Interval:  0
+    Location:
+      s3:manager-test
+    Name:         adhoc backup
+    Num Retries:  3
+    Retention:    3
+    Start Date:   now
+  Manager Id:     2b9dbe8c-9daa-4703-a66d-c29f63a917c8
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.0.0
+
+
+

Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status.

+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/migration.html b/v1.8/migration.html new file mode 100644 index 00000000000..155802d0fc9 --- /dev/null +++ b/v1.8/migration.html @@ -0,0 +1,747 @@ + + + + + + + + + + + + + Version migrations | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Version migrations

+
+

v0.3.0 -> v1.0.0 migration

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common kind +which is easier to disambiguate (ScyllaCluster). +This change is backward incompatible, which means manual migration is needed.

+

This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the upgrade guide where full deletion is requested, this procedure shouldn’t cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn’t run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first.

+

Read the whole procedure and make sure you understand what is going on before executing any of the commands!

+

In case of any issues or questions regarding this procedure, you’re welcomed on our Scylla Users Slack +on #kubernetes channel.

+
+
+

Procedure

+
    +
  1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +

    All below commands will use scylla namespace and simple-cluster as a cluster name.

    +
  2. +
  3. Make sure you’re using v1.0.0 tag:

    +
    git checkout v1.0.0
    +
    +
    +
  4. +
  5. Upgrade your cert-manager to v1.0.0. If you installed it from a static file from this repo, simply execute the following:

    +
     kubectl apply -f examples/common/cert-manager.yaml
    +
    +
    +

    If your cert-manager was installed in another way, follow official instructions on cert-manager website.

    +
  6. +
  7. examples/common/operator.yaml file contains multiple resources. Extract only CustomResourceDefinition to separate file.

  8. +
  9. Install v1.0.0 CRD definition from file created in the previous step:

    +
    kubectl apply -f examples/common/crd.yaml
    +
    +
    +
  10. +
  11. Save your existing simple-cluster Cluster definition to a file:

    +
    kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml
    +
    +
    +
  12. +
  13. Migrate Kind and ApiVersion to new values using:

    +
    sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml
    +sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml
    +
    +
    +
  14. +
  15. Install migrated CRD instance

    +
    kubectl apply -f existing-cluster.yaml
    +
    +
    +

    At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator.

    +
  16. +
  17. Get UUID of newly created ScyllaCluster resource:

    +
    kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}"
    +
    +12a3678d-8511-4c9c-8a48-fa78d3992694
    +
    +
    +

    Save output UUID somewhere, it will be referred as <new-cluster-uid> in commands below.

    +

    Depending on your shell, you might get additional ‘%’ sign at the end of UUID, make sure to remove it!

    +
  18. +
  19. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters:

    +
    kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]'
    +
    +
    +

    Amend role name according to your cluster name, it should look like <scylla-cluster-name>-member.

    +
  20. +
  21. Get a list of all Services associated with your cluster. First get list of all services:

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          109m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   108m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   106m
    +
    +
    +
  22. +
  23. For each service, change its ownerReference to point to new CRD instance:

    +
     kubectl -n scylla patch svc <cluster-svc-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-svc-name> with Service name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  24. +
  25. Get a list of all Services again to see if none was deleted. Check also “Age” column, it shouldn’t be lower than previous result.

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          110m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   110m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   107m
    +
    +
    +
  26. +
  27. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  28. +
  29. For each StatefulSet from previous step, change its ownerReference to point to new CRD instance.

    +
     kubectl -n scylla patch sts <cluster-sts-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  30. +
  31. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. +Checkout v0.3.0 version, and remove Scylla Operator, and old CRD:

    +
     git checkout v0.3.0
    + kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  32. +
  33. Checkout v1.0.0, and install upgraded Scylla Operator:

    +
     git checkout v1.0.0
    + kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  34. +
  35. Wait until Scylla Operator boots up:

    +
     kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s
    +
    +
    +
  36. +
  37. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  38. +
  39. For each StatefulSet from previous step, change its sidecar container image to v1.0.0, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one.

    +
    kubectl -n scylla patch sts <cluster-sts> --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +kubectl -n scylla rollout status sts <cluster-sts>
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name.

    +
  40. +
  41. If you’re using Scylla Manager, bump Scylla Manager Controller image to v1.0.0

    +
     kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +
    +
    +
  42. +
  43. Your Scylla cluster is now migrated to v1.0.0.

  44. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/monitoring.html b/v1.8/monitoring.html new file mode 100644 index 00000000000..cf8c84bd135 --- /dev/null +++ b/v1.8/monitoring.html @@ -0,0 +1,638 @@ + + + + + + + + + + + + + Setting up Monitoring | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Setting up Monitoring

+

Both Prometheus, Grafana and AlertManager were configured with specific rules for Scylla Monitoring. +All of them will be available under the scylla-monitoring namespace. +Customization can be done in examples/common/monitoring/values.yaml

+
    +
  1. Download Scylla Monitoring

    +

    First you need to download Scylla Monitoring, which contains Grafana dashboards and custom Prometheus rules. +You can do this by running the following command:

    +
    mkdir scylla-monitoring
    +curl -L https://github.com/scylladb/scylla-monitoring/tarball/branch-4.0 | tar -xzf - -C scylla-monitoring --strip-components=1
    +
    +
    +
  2. +
  3. Add monitoring stack charts repository

    +
    helm repo add prometheus-community https://prometheus-community.github.io/helm-charts
    +helm repo update
    +
    +
    +
  4. +
  5. Install monitoring stack

    +
    helm install monitoring prometheus-community/kube-prometheus-stack --create-namespace --namespace scylla-monitoring -f examples/common/monitoring/values.yaml -f <( cd scylla-monitoring/prometheus/prom_rules && find * -maxdepth 1 -type f -iregex '.*\.\(yaml\|yml\)' -print0 | xargs -0 yq ea '{(filename | sub("\/", "-")): .} | . as $item ireduce ({}; . * $item) | {"additionalPrometheusRulesMap": .}' )
    +
    +
    +

    If you want to tweak the Prometheus properties, for example it’s assigned memory, +you can override it by adding a command line argument like this: --set prometheus.resources.limits.memory=4Gi +or edit values file located at examples/common/monitoring/values.yaml.

    +

    The yq command prepares and formats custom Prometheus rules included in Scylla Monitoring and passes them as +additional values to helm install command. +It results in creating additional PrometheusRules: custom resources used to mount the rules into Prometheus.

    +
  6. +
  7. Install Service Monitors

    +

    ServiceMonitors are used by the Prometheus to discover applications exposing metrics.

    +
    # Scylla Service Monitor
    +kubectl apply -f examples/common/monitoring/scylla-service-monitor.yaml
    +
    +# Scylla Manager Service Monitor
    +kubectl apply -f examples/common/monitoring/scylla-manager-service-monitor.yaml
    +
    +
    +
  8. +
  9. Install dashboards

    +

    Scylla Monitoring comes with pre generated dashboards suitable for multiple Scylla versions. +In this example we will use dashboards for Scylla 4.6, and Scylla Manager 3.0. +Amend directory path to generated dashboards to version suitable for your deployment.

    +

    Now the dashboards can be created like this:

    +
    # Scylla dashboards
    +for f in scylla-monitoring/grafana/build/ver_4.6/*.json; do
    +  kubectl -n scylla-monitoring create configmap scylla-dashboard-"$( basename "${f}" '.json' )" --from-file="${f}" --dry-run=client -o yaml | kubectl label -f- --dry-run=client -o yaml --local grafana_dashboard=1 | kubectl apply --server-side -f-
    +done
    +
    +# Scylla Manager dashboards
    +for f in scylla-monitoring/grafana/build/manager_3.0/*.json; do
    +  kubectl -n scylla-monitoring create configmap scylla-manager-dashboard-"$( basename "${f}" '.json' )" --from-file="${f}" --dry-run=client -o yaml | kubectl label -f- --dry-run=client -o yaml --local grafana_dashboard=1 | kubectl apply --server-side -f-
    +done
    +
    +
    +

    Once Grafana sidecar picks up these dashboards they should be accessible in Grafana.

    +
  10. +
+

To access Grafana locally, run: +kubectl -n scylla-monitoring port-forward deployment.apps/monitoring-grafana 3000

+

You can find it on http://127.0.0.1:3000 and login with the credentials admin:admin.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/nodeoperations/automatic_cleanup.html b/v1.8/nodeoperations/automatic_cleanup.html new file mode 100644 index 00000000000..6c0671fbe15 --- /dev/null +++ b/v1.8/nodeoperations/automatic_cleanup.html @@ -0,0 +1,586 @@ + + + + + + + + + + + + + Automatic cleanup and replacement in case when k8s node is lost | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

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+
+ + + +
+ +
+ +
+

Automatic cleanup and replacement in case when k8s node is lost

+

In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity.

+

When automaticOrphanedNodeCleanup flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/nodeoperations/index.html b/v1.8/nodeoperations/index.html new file mode 100644 index 00000000000..46b1f65e55a --- /dev/null +++ b/v1.8/nodeoperations/index.html @@ -0,0 +1,586 @@ + + + + + + + + + + + + + Node operations using Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Node operations using Scylla Operator

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Choose a topic:

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+ + + + + + + \ No newline at end of file diff --git a/v1.8/nodeoperations/maintenance_mode.html b/v1.8/nodeoperations/maintenance_mode.html new file mode 100644 index 00000000000..12dc08c3332 --- /dev/null +++ b/v1.8/nodeoperations/maintenance_mode.html @@ -0,0 +1,595 @@ + + + + + + + + + + + + + Maintenance mode | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

Maintenance mode

+

When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive.

+

This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again.

+

To enable maintenance mode add scylla/node-maintenance label to service in front of Scylla Pod.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance=""
+
+
+

To disable, simply remove this label from service.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance-
+
+
+
+ + +
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Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Replacing a Scylla node

+
+

Replacing a dead node

+

In the case of a host failure, it may not be possible to bring back the node to life.

+

Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth).

+

This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time

+

Procedure

+
    +
  1. Verify the status of the node using nodetool status command, the node with status DN is down and need to be replaced

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.63 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +DN  10.43.43.51    74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  2. +
  3. Identify service which is bound to down node by checking IP address

    +
    kubectl -n scylla get svc
    +NAME                                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                           AGE
    +simple-cluster-client                   ClusterIP   None            <none>        9180/TCP                                                          3h12m
    +simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.231.189   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h12m
    +simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.125.110   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h11m
    +simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.43.51     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h5m
    +
    +
    +
  4. +
  5. Drain node which we would like to replace using. This command may delete your data from local disks attached to given node!

    +
    kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data
    +
    +
    +

    Pod which will be replaced should enter the Pending state

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h21m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h19m
    +simple-cluster-us-east-1-us-east-1a-2   0/2     Pending   0          8m14s
    +
    +
    +
  6. +
  7. To being node replacing, add scylla/replace="" label to service bound to pod we are replacing.

    +
    kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace=""
    +
    +
    +

    Your failed Pod should be recreated on available k8s node

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h27m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h25m
    +simple-cluster-us-east-1-us-east-1a-2   1/2     Running   0          9s
    +
    +
    +

    Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. +After bootstraping is over, your new Pod should be ready to go. +Old one shouldn’t be no longer visible in nodetool status

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.62 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +UN  10.43.191.172  74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  8. +
  9. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. +You can use Scylla Manager to run the repair.

  10. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/nodeoperations/restore.html b/v1.8/nodeoperations/restore.html new file mode 100644 index 00000000000..bdf47abe654 --- /dev/null +++ b/v1.8/nodeoperations/restore.html @@ -0,0 +1,657 @@ + + + + + + + + + + + + + Restore from backup | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + + + +
+

Restore from backup

+

This procedure will describe how to restore from backup taken using Scylla Manager to a fresh empty cluster of any size.

+

First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod.

+
sctool backup list -c <CLUSTER_ID> --all-clusters -L <BACKUP_LOCATION>
+
+
+

Where:

+
    +
  • CLUSTER_ID - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status.

  • +
  • BACKUP_LOCATION - is a location where backup is stored. For example, for bucket called backups stored in AWS S3, location is s3:backups.

  • +
+
sctool backup list -c simple-cluster --all-clusters -L s3:backups
+Snapshots:
+  - sm_20201227144037UTC (409MiB)
+  - sm_20201228145917UTC (434MiB)
+Keyspaces:
+  - users (9 tables)
+  - system_auth (2 tables)
+  - system_distributed (3 tables)
+  - system_schema (13 tables)
+  - system_traces (5 tables)
+
+
+

To get the list of files use:

+
sctool backup files -c <CLUSTER_ID> -L <BACKUP_LOCATION> -T <SNAPSHOT_TAG>
+
+
+

Where:

+
    +
  • SNAPSHOT_TAG - name of snapshot you want to restore.

  • +
+

Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example:

+
s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz      ./
+
+
+

To download this archive you can use AWS CLI tool aws s3 cp.

+

This archive contains a single CQL file for each keyspace in the backup.

+
tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz
+-rw------- 0/0           12671 2020-12-28 13:17 users.cql
+-rw------- 0/0            2216 2020-12-28 13:17 system_auth.cql
+-rw------- 0/0             921 2020-12-28 13:17 system_distributed.cql
+-rw------- 0/0           12567 2020-12-28 13:17 system_schema.cql
+-rw------- 0/0            4113 2020-12-28 13:17 system_traces.cql
+
+
+

Extract this archive and copy each schema file to one of the cluster Pods by:

+
kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla
+
+
+

To import schema simply execute:

+
kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql
+
+
+

Once the schema is recreated we can proceed to downloading data files.

+

First let’s save a list of snapshot files to file called backup_files.out:

+
kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out
+
+
+

We will be using sstableloader to restore data. sstableloader needs a specific directory structure to work namely: <keyspace>/<table>/<contents> +To create this directory structure and download all the files execute these commands:

+
mkdir snapshot
+cd snapshot
+# Create temporary directory structure.
+cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p
+# Download snapshot files.
+cat ../backup_files.out | xargs -n2 aws s3 cp
+
+
+

To load data into cluster pass cluster address to sstableloader together with path to data files and credentials:

+
sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password <password>
+
+
+

Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/nodeoperations/scylla_upgrade.html b/v1.8/nodeoperations/scylla_upgrade.html new file mode 100644 index 00000000000..b5b8e156a60 --- /dev/null +++ b/v1.8/nodeoperations/scylla_upgrade.html @@ -0,0 +1,668 @@ + + + + + + + + + + + + + Upgrading version of Scylla | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
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+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrading version of Scylla

+

To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition.

+

In this example cluster will be upgraded to version 4.4.5.

+
kubectl -n scylla patch ScyllaCluster simple-cluster  -p '{"spec":{"version": "4.4.5"}}' --type=merge
+
+
+

Operator supports two types of version upgrades:

+
    +
  1. Patch upgrade

  2. +
  3. Generic upgrade

  4. +
+

Patch upgrade

+

Patch upgrade is executed when only patch version change is detected according to semantic versioning format. +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one.

+

Example: 4.0.0 -> 4.0.1

+

Generic upgrade

+

Generic upgrades are executed for the non patch version changes.

+

Example: 4.0.0 -> 2020.1.0 or 4.0.0 -> 4.1.0 or even 4.0.0 -> nightly

+

User can observe current state of upgrade in ScyllaCluster status.

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+[...]
+Status:
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.1.9
+  Upgrade:
+    Current Node:         simple-cluster-us-east-1-us-east-1a-2
+    Current Rack:         us-east-1a
+    Data Snapshot Tag:    so_data_20201228135002UTC
+    From Version:         4.1.9
+    State:                validate_upgrade
+    System Snapshot Tag:  so_system_20201228135002UTC
+    To Version:           4.2.2
+
+
+

Each upgrade begins with taking a snapshot of system and system_schema keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under System Snapshot Tag.

+

Before nodes in rack are upgraded, underlying StatefulSet is changed to use OnDelete UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed.

+

When a node is being upgraded, maintenance mode is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under Data Snapshot Tag and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node.

+

Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version.

+

Current state of upgrade can be traced using Current Node, Current Rack and State status fields.

+
    +
  • Current Node shows which node is being upgraded.

  • +
  • Current Rack displays which rack is being upgraded.

  • +
  • State contain information at which stage upgrade is.

  • +
+

State can have following values:

+
    +
  • begin_upgrade - upgrade is starting

  • +
  • check_schema_agreement - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried.

  • +
  • create_system_backup - system keyspaces snapshot is being taken

  • +
  • find_next_rack - Operator finds out which rack must be upgraded next, decision is saved in Current Rack

  • +
  • upgrade_image_in_pod_spec - Image and UpgradeStrategy is upgraded in underlying StatefulSet

  • +
  • find_next_node - Operator finds out which node must be upgraded next, decision is saved in Current Node

  • +
  • enable_maintenance_mode - maintenance mode is being enabled

  • +
  • drain_node - node is being drained

  • +
  • backup_data - snapshot of data keyspaces is being taken

  • +
  • disable_maintenance_mode - maintenance mode is being disabled

  • +
  • delete_pod - Scylla Pod is being deleted

  • +
  • validate_upgrade - Operator validates if new pod enters Ready state and if Scylla version is upgraded

  • +
  • clear_data_backup - snapshot of data keyspaces is being removed

  • +
  • clear_system_backup - snapshot of system keyspaces is being removed

  • +
  • restore_upgrade_strategy - restore UpgradeStrategy in underlying StatefulSet

  • +
  • finish_upgrade - upgrade cleanup

  • +
+

Recovering from upgrade failure

+

Upgrade may get stuck on validate_upgrade stage. This happens when Scylla Pod refuses to properly boot up.

+

To continue with upgrade, first turn off operator by scaling Operator replicas to zero:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0
+
+
+

Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names.

+

Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2
+
+
+

Operator should continue upgrade process from where it left off.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/objects.inv b/v1.8/objects.inv new file mode 100644 index 00000000000..62272e7ecae --- /dev/null +++ b/v1.8/objects.inv @@ -0,0 +1,5 @@ +# Sphinx inventory version 2 +# Project: Scylla Operator +# Version: +# The remainder of this file is compressed using zlib. +xڅTˎ0 +ۢ"YEmj(2(Cn˰썳7kR#B3ɻ.`]>Svu"Rr5N18J}vABӋSm?!tha'uhPO-KJPf]\pԷ#P }]ǍlhTM^!9zMl JMoDž5u0ʼn_ԌmtT[bRG ؘ̢1x02I^by NfqFo1#ݢNVwZoBn^nuaԂ rcCM%@j[\gCe+ޓC$QQ`:<ŌBD/^e+tS߆kݗNjN?ϏkE5~ SyebeJVU5UڀwVxu]a0a-ʝDF&.~JeagݲٌMa7a*VC?e \ No newline at end of file diff --git a/v1.8/performance.html b/v1.8/performance.html new file mode 100644 index 00000000000..82fd16190b9 --- /dev/null +++ b/v1.8/performance.html @@ -0,0 +1,670 @@ + + + + + + + + + + + + + Performance tuning | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Performance tuning

+

Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes.

+
+

Node tuning

+

Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning.

+

Below example NodeConfig tunes nodes having scylla.scylladb.com/node-type=scylla label:

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: NodeConfig
+metadata:
+ name: cluster
+spec:
+ placement:
+   nodeSelector:
+     scylla.scylladb.com/node-type: scylla
+
+
+

For more details about new CRD use:

+
kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1
+
+
+

For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more.

+

Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node.

+

Scylla works most efficently when it’s pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares.

+

On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others.
We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively.

+

Tuning resources are created in a special namespace called scylla-operator-node-tuning.

+

The tuning is applied only to pods with Guaranteed QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions.

+
+
+

Kubernetes tuning

+

By default, the kubelet uses the CFS quota to enforce pod CPU limits.
When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static.

+

Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider.

+

Only pods within the Guaranteed QoS class) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won’t be part of the shared pool.

+

In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class:

+
    +
  • resource request and limits must be equal or only limits have to be provided

  • +
  • agentResources must be provided and their requests and limits must be equal, or only limits have to be provided

  • +
+

An example of such a ScyllaCluster that receives a Guaranteed QoS class is below:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: guaranteed-cluster
+  namespace: scylla
+spec:
+  version: 4.5.1
+  agentVersion: 2.5.2
+  datacenter:
+    name: us-east-1
+    racks:
+    - name: us-east-1a
+      members: 3
+      storage:
+        capacity: 500Gi
+      agentResources:
+        requests:
+          cpu: 1
+          memory: 1G
+        limits:
+          cpu: 1
+          memory: 1G
+      resources:
+        requests:
+          cpu: 4
+          memory: 16G
+        limits:
+          cpu: 4
+          memory: 16G
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.8/releases.html b/v1.8/releases.html new file mode 100644 index 00000000000..70197347fb7 --- /dev/null +++ b/v1.8/releases.html @@ -0,0 +1,808 @@ + + + + + + + + + + + + + Releases | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
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+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Releases

+
+

Schedule

+

We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates.

+ + + + + + + + + + + + + + + +
ReleaseCode freezeGeneral availability
1.82022-03-022021-03-16
+
+

Supported releases

+

We support the latest 2 releases of the operator to give everyone time to upgrade.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
ReleaseGeneral availabilitySupport ends
1.72022-01-27Release of 1.9
1.62021-12-03Release of 1.8
1.52021-09-162022-01-27
1.42021-08-102021-12-03
1.32021-06-172021-09-16
1.22021-05-062021-08-10
1.12021-03-222021-06-17
1.02021-01-212021-05-06
+

Backport policy

+

Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers.

+
+
+
+

CI/CD

+

We use GitHub actions for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite.

+
+

Automated promotions

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Git referenceTypeContainer image
masterbranchdocker.io/scylladb/scylla-operator:latest
vX.Ybranchdocker.io/scylladb/scylla-operator:X.Y
vX.Y.Ztagdocker.io/scylladb/scylla-operator:X.Y.Z
vX.Y.Z-alpha.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-alpha.N
vX.Y.Z-beta.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-beta.N
vX.Y.Z-rc.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-rc.N
+
+

Generally available

+

GA images aren’t build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate.

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+

Support matrix

+

Support matrix table shows the version requirements for a particular scylla-operator version. Be sure to match these requirements, otherwise some functionality will not work.

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v1.8v1.7v1.6v1.5v1.4v1.3v1.2v1.1v1.0
Kubernetes>=1.21>=1.20 && <1.25>=1.19.10 && <1.25>=1.19.10>=1.19.10>=1.19>=1.19>=1.11>=1.11
Scylla OS>=4.6>=4.3>=4.3>=4.3>=4.3>=4.2>=4.2>=4.0>=4.0
Scylla Enterprise>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2020.1>=2020.1>=2020.1>=2020.1
Scylla Manager>=2.6>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2
Scylla Monitoring>=4.0>=3.0>=3.0>=1.0>=1.0>=1.0>=1.0>=1.0>=1.0
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+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

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+

Scylla Cluster CRD

+

Scylla database clusters can be created and configured using the clusters.scylla.scylladb.com custom resource definition (CRD).

+

Please refer to the the user guide walk-through for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD.

+
+

Sample

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: simple-cluster
+  namespace: scylla
+spec:
+  version: 2.3.1
+  repository: scylladb/scylla
+  developerMode: true
+  cpuset: false
+  automaticOrphanedNodeCleanup: true
+  repairs:
+  - name: "weekly us-east-1 repair"
+    intensity: "2"
+    interval: "7d"
+    dc: ["us-east-1"]
+  backups:
+  - name: "daily users backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "1d"
+    keyspace: ["users"]
+  - name: "weekly full cluster backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "7d"
+  datacenter:
+    name: us-east-1
+    racks:
+      - name: us-east-1a
+        members: 3
+        storage:
+          capacity: 500G
+          storageClassName: local-raid-disks
+        resources:
+          requests:
+            cpu: 8
+            memory: 32Gi
+          limits:
+            cpu: 8
+            memory: 32Gi
+        placement:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: failure-domain.beta.kubernetes.io/region
+                    operator: In
+                    values:
+                      - us-east-1
+                  - key: failure-domain.beta.kubernetes.io/zone
+                    operator: In
+                    values:
+                      - us-east-1a
+          tolerations:
+            - key: role
+              operator: Equal
+              value: scylla-clusters
+              effect: NoSchedule
+
+
+
+
+

Settings Explanation

+
+

Cluster Settings

+
    +
  • version: The version of Scylla to use. It is used as the image tag to pull.

  • +
  • agentVersion: The version of Scylla Manager Agent to use. It is used as the image tag to pull.

  • +
  • repository: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • agentRepository: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • developerMode: Optional field. If it’s true, then Scylla is started in developer mode. This setting is for shared test/dev environments.

  • +
  • cpuset: Optional field. If it’s true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the static cpu policy and only specify limits in resources.

  • +
  • automaticOrphanedNodeCleanup: Optional field. Controls if automatic orphan node cleanup should be performed.

  • +
  • alternator: Optional field. Defines Alternator configuration.

    +
      +
    • port: Port on which to bind to Alternator API.

    • +
    • writeIsolation: required Desired write isolation.

    • +
    +
  • +
  • genericUpgrade: Optional field. Defines GenericUpgrade configuration.

    +
      +
    • failureStrategy: specifies which logic is executed when upgrade failure happens. Currently only Retry is supported.

    • +
    • pollInterval: specifies how often upgrade logic polls on state updates. +Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect +overall time spent during upgrade.

    • +
    +
  • +
  • datacenter: Datacenter definition.

  • +
  • sysctls: Optional field. Sysctl properties to be applied during initialization.

  • +
  • scyllaArgs: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it.

  • +
  • network: Optional field. Allows to customize network parameters.

    +
      +
    • hostNetworking: controls if host networking should be enabled.

    • +
    • dnsPolicy: controls Scylla Pod DNS Policy. See details.

    • +
    +
  • +
  • repairs: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
  • backups: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
+

In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups.

+
+
+

Scylla Manager settings

+

Tasks are scheduled only when Scylla Manager is deployed in K8s cluster.

+

Repairs:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. Task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. The number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1", "!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • failFast - Optional field. Stop repair on first error.

  • +
  • intensity - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. +If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). +Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. +Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. +For Scylla clusters that do not support row-level repair, intensity can be a decimal between (0,1). +In that case it specifies percent of shards that can be repaired in parallel on a repair master node. +For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. +Intensity is a number passed as string due to lack of support for float values in k8s controller runtime

  • +
  • parallel - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). +Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. +The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. +The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace", "!keyspace.table_prefix_*"] +used to include or exclude keyspaces from repair.

  • +
  • smallTableThreshold - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units [B, MiB, GiB, TiB] (default "1GiB").

  • +
+

Backups:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - Optional field. Specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. the number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1","!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace","!keyspace.table_prefix_*"] used to include or exclude keyspaces from backup.

  • +
  • location - Optional field. A list of backup locations in the format [<dc>:]<provider>:<name> ex. s3:my-bucket. +The <dc>: part is optional and is only needed when different datacenters are being used to upload data to different locations. +<name> Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are s3 and gcs.

  • +
  • rateLimit - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format [<dc>:]<limit>. +The <dc>: part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100).

  • +
  • retention - Optional field. The number of backups which are to be stored (default 3).

  • +
  • snapshotParallel - Optional field. A list of snapshot parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set, the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
  • uploadParallel - Optional field. A list of upload parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
+
+
+

Datacenter Settings

+
    +
  • name: Name of the datacenter. Usually, a datacenter corresponds to a region.

  • +
  • racks: List of racks for the specific datacenter.

  • +
+
+
+

Rack Settings

+
    +
  • name: Name of the rack. Usually, a rack corresponds to an availability zone.

  • +
  • members: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don’t call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node).

  • +
  • storage: Defines the specs of the underlying storage.

    +
      +
    • capacity: Capacity of the PersistentVolume to request.

    • +
    • storageClassName: Optional field. StorageClass of PersistentVolume to request.

    • +
    +
  • +
  • resources: Defines the CPU and RAM resources for the Scylla Pods.

    +
      +
    • requests: The minimum amount of resources needed to run a Scylla container.

      +
        +
      • cpu: CPU requests.

      • +
      • memory: RAM requests.

      • +
      +
    • +
    • limits: The maximum amount of resources that can be used by a Scylla container.

      +
        +
      • cpu: CPU limits.

      • +
      • memory: RAM limits.

      • +
      +
    • +
    +
  • +
  • agentResources: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See resources for details.

  • +
  • volumes: Optional field. Defines volumes available in Scylla Pod. See details.

  • +
  • volumeMounts: Optional field. Defines which volumes will be attached to Scylla container.

  • +
  • agentVolumeMounts: Optional field. Defines which volumes will be attached to Agent container.

  • +
  • scyllaConfig: Optional field. name of custom config map which will be merged with Scylla config.

  • +
  • scyllaAgentConfig: Optional field. name of custom secret which will be merged with Scylla Manager Agent config.

  • +
  • placement: Optional field. Defines the placement of Scylla Pods. Has the following subfields:

    + +
  • +
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+ + + + + + + \ No newline at end of file diff --git a/v1.8/searchindex.js b/v1.8/searchindex.js new file mode 100644 index 00000000000..d1a7fbeb8b8 --- /dev/null +++ b/v1.8/searchindex.js @@ -0,0 +1 @@ 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to Scylla Operator","Deploying Scylla on EKS","Deploying Scylla on a Kubernetes Cluster","Deploying Scylla on GKE","Deploying Scylla stack using Helm Charts","Scylla Operator Documentation","Known issues","Deploying Scylla Manager on a Kubernetes Cluster","Version migrations","Setting up Monitoring","Automatic cleanup and replacement in case when k8s node is lost","Node operations using Scylla Operator","Maintenance mode","Replacing a Scylla node","Restore from backup","Upgrading version of Scylla","Performance tuning","Releases","Scylla Cluster CRD","Upgrade of Scylla Operator"],titleterms:{"0":[8,19],"1":19,"2":19,"3":[8,19],"case":10,access:[1,2,3],add:0,admin:3,agent:2,altern:2,an:1,architectur:7,auth:2,autom:17,automat:10,avail:17,backport:17,backup:14,benchmark:2,boot:6,branch:0,build:0,cassandra:2,cd:17,cert:[2,4],chart:4,ci:17,clean:[2,7],cleanup:[4,10],clone:0,cluster:[1,2,3,7,18],commit:0,configur:[1,2,3],contain:2,contribut:0,control:4,crd:18,creat:[0,1,2,3],custom:4,daemonset:[1,3],databas:[1,2,3],datacent:18,dead:13,delet:[1,3],depend:1,deploi:[1,2,3,4,7],develop:0,document:5,doe:6,down:2,download:2,dr:[1,3,4],ek:1,engin:3,environ:[1,3],explan:18,fork:0,formatt:3,from:14,gener:17,gke:3,googl:3,helm:[3,4,19],histori:0,host:2,imag:4,initi:[0,2],instal:[1,3,4],issu:6,k8:10,kernel:2,known:6,kubectl:19,kubernet:[2,3,7,16],local:[1,2,3],lost:10,mainten:12,manag:[2,4,6,7,18],matrix:17,messag:0,migrat:8,minikub:6,mode:12,monitor:[2,4,9],network:2,node:[10,11,13,16],oper:[0,1,2,3,4,5,11,19],paramet:2,parti:1,perform:16,polici:17,prerequisit:[0,2,4,7],procedur:8,project:0,promot:17,provision:[1,3],pull:0,queri:6,rack:18,registr:7,releas:17,remot:0,replac:[10,13],repositori:4,request:0,requir:[1,3],resourc:4,restor:14,result:4,run:2,sampl:18,scale:2,schedul:[7,17],script:1,scylla:[0,1,2,3,4,5,6,7,11,13,15,18,19],set:[2,3,9,18],setup:[0,1,3],stack:4,stress:2,submit:0,support:17,task:7,third:1,tl:[1,3,4],token:2,tool:[1,3],troubleshoot:[2,7],truncat:6,tune:[1,16],up:[2,6,7,9],updat:0,upgrad:[15,19],upstream:0,us:[4,11],v0:[8,19],v1:[8,19],variabl:[1,3],version:[8,15],via:19,walkthrough:[1,3],webhook:4,when:10,work:6,xf:3,your:0,yourself:3}}) \ No newline at end of file diff --git a/v1.8/sitemap.xml b/v1.8/sitemap.xml new file mode 100644 index 00000000000..9012105c245 --- /dev/null +++ b/v1.8/sitemap.xml @@ -0,0 +1,2 @@ + +https://operator.docs.scylladb.com/stable/contributing.htmlhttps://operator.docs.scylladb.com/stable/eks.htmlhttps://operator.docs.scylladb.com/stable/generic.htmlhttps://operator.docs.scylladb.com/stable/gke.htmlhttps://operator.docs.scylladb.com/stable/helm.htmlhttps://operator.docs.scylladb.com/stable/index.htmlhttps://operator.docs.scylladb.com/stable/known_issues.htmlhttps://operator.docs.scylladb.com/stable/manager.htmlhttps://operator.docs.scylladb.com/stable/migration.htmlhttps://operator.docs.scylladb.com/stable/monitoring.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/automatic_cleanup.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/index.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/maintenance_mode.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/replace_node.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/restore.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/scylla_upgrade.htmlhttps://operator.docs.scylladb.com/stable/performance.htmlhttps://operator.docs.scylladb.com/stable/releases.htmlhttps://operator.docs.scylladb.com/stable/scylla_cluster_crd.htmlhttps://operator.docs.scylladb.com/stable/upgrade.htmlhttps://operator.docs.scylladb.com/stable/genindex.htmlhttps://operator.docs.scylladb.com/stable/404.htmlhttps://operator.docs.scylladb.com/stable/search.html \ No newline at end of file diff --git a/v1.8/upgrade.html b/v1.8/upgrade.html new file mode 100644 index 00000000000..9ecc3a6ef4f --- /dev/null +++ b/v1.8/upgrade.html @@ -0,0 +1,796 @@ + + + + + + + + + + + + + Upgrade of Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrade of Scylla Operator

+

This page describes Scylla Operator upgrade procedures.
There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps.

+
+

Upgrade via Helm

+

Helm doesn’t support managing CustomResourceDefinition resources (#5871, #7735)
These are only created on first install and never updated. In order to update them, users have to do it manually.

+

Replace <release_name> with the name of your Helm release for Scylla Operator and replace <version> with the version number you want to install:

+
    +
  1. Make sure Helm chart repository is up-to-date:

    +
    helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable
    +helm repo update
    +
    +
    +
  2. +
  3. Update CRD resources. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    tmpdir=$( mktemp -d ) \
    +  && helm pull scylla-operator/scylla-operator --version <version> --untar --untardir "${tmpdir}" \
    +  && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \
    +  | xargs kubectl apply
    +
    +
    +
  4. +
  5. Update Scylla Operator

    +
    helm upgrade --version <version> <release_name> scylla-operator/scylla-operator
    +
    +
    +
  6. +
+
+
+

Upgrade via kubectl

+

Replace <version> with the version number you want to install:

+
    +
  1. Checkout source code of version you want to use:

    +
    git checkout <version>
    +
    +
    +
  2. +
  3. Manifests use rolling minor version tag, you may want to pin it to specific version:

    +
    find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:<version>^g"
    +
    +
    +
  4. +
  5. Update Scylla Operator. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    kubectl apply -f deploy/operator
    +
    +
    +
  6. +
+
+
+
+

v1.2.0 -> v1.3.0

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.3.0:

    +
    git checkout v1.3.0
    +
    +
    +
  2. +
  3. Update Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  4. +
  5. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  6. +
+
+
+

v1.1.0 -> v1.2.0

+

1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones.

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.2.0:

    +
    git checkout v1.2.0
    +
    +
    +
  2. +
  3. Remove old scylla operator namespace - in our case it’s called scylla-operator-system:

    +
    kubectl delete namespace scylla-operator-system --wait=true
    +
    +
    +
  4. +
  5. Remove old webhooks:

    +
    kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration
    +kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration
    +
    +
    +
  6. +
  7. Install Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  8. +
  9. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  10. +
+
+
+

v1.0.0 -> v1.1.0

+

During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected.

+
    +
  1. Get name of StatefulSet managing Scylla Operator

    +
    kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager"
    +
    +NAME                                 READY   AGE
    +scylla-operator-controller-manager   1/1     95m
    +
    +
    +
  2. +
  3. Change probes and used container image by applying following patch:

    +
    spec:
    +  template:
    +    spec:
    +      containers:
    +      - name: manager
    +        image: docker.io/scylladb/scylla-operator:1.1.0
    +        livenessProbe:
    +          httpGet:
    +            path: /healthz
    +            port: 8080
    +            scheme: HTTP
    +        readinessProbe:
    +          $retainKeys:
    +          - httpGet
    +          httpGet:
    +            path: /readyz
    +            port: 8080
    +            scheme: HTTP
    +
    +
    +

    To apply above patch save it to file (operator-patch.yaml for example) and apply to Operator StatefulSet:

    +
    kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)"
    +
    +
    +
  4. +
+
+
+

v0.3.0 -> v1.0.0

+

Note: There’s an experimental migration procedure available here.

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common +kind which is easier to disambiguate. (ScyllaCluster). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide.

+
    +
  1. Get list of existing Scylla clusters

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +
  2. +
  3. Delete each one of them

    +
    kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster
    +
    +
    +
  4. +
  5. Make sure you’re on v0.3.0 branch

    +
    git checkout v0.3.0
    +
    +
    +
  6. +
  7. Delete existing CRD and Operator

    +
    kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  8. +
  9. Checkout v1.0.0 version

    +
    git checkout v1.0.0
    +
    +
    +
  10. +
  11. Install new CRD and Scylla Operator

    +
    kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  12. +
  13. Migrate your existing Scylla Cluster definition. Change apiVersion and kind from:

    +
    apiVersion: scylla.scylladb.com/v1alpha1
    +kind: Cluster
    +
    +
    +

    to:

    +
    apiVersion: scylla.scylladb.com/v1
    +kind: ScyllaCluster
    +
    +
    +
  14. +
  15. Once your cluster definition is ready, use kubectl apply to install fresh Scylla cluster.

  16. +
+
+
+ + +
+ + + + + + + +
+ +
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+ + + \ No newline at end of file diff --git a/v1.9/CNAME b/v1.9/CNAME new file mode 100644 index 00000000000..12aae904168 --- /dev/null +++ b/v1.9/CNAME @@ -0,0 +1 @@ +operator.docs.scylladb.com \ No newline at end of file diff --git a/v1.9/_images/logo.png b/v1.9/_images/logo.png new file mode 100644 index 00000000000..5bbfedad2ac Binary files /dev/null and b/v1.9/_images/logo.png differ diff --git a/v1.9/_sources/contributing.md.txt b/v1.9/_sources/contributing.md.txt new file mode 100644 index 00000000000..da5fc078732 --- /dev/null +++ b/v1.9/_sources/contributing.md.txt @@ -0,0 +1,155 @@ +# Contributing to Scylla Operator + +## Prerequisites + +To develop on scylla-operator, your environment must have the following: + +1. [Go 1.13](https://golang.org/dl/) + * Make sure [GOPATH](https://github.com/golang/go/wiki/SettingGOPATH) is set to `GOPATH=$HOME/go`. +2. [Kustomize v3.1.0](https://github.com/kubernetes-sigs/kustomize/releases/tag/v3.1.0) +3. [kubebuilder v2.3.1](https://github.com/kubernetes-sigs/kubebuilder/releases/tag/v2.3.1) +4. [Docker](https://docs.docker.com/install/) +5. Git client installed +6. Github account + +To install all dependencies (Go, kustomize, kubebuilder, dep), simply run: +```bash +./install-dependencies.sh +``` + +## Initial Setup + +### Create a Fork + +From your browser navigate to [http://github.com/scylladb/scylla-operator](http://github.com/scylladb/scylla-operator) and click the "Fork" button. + +### Clone Your Fork + +Open a console window and do the following: + +```bash +# Create the scylla operator repo path +mkdir -p $GOPATH/src/github.com/scylladb + +# Navigate to the local repo path and clone your fork +cd $GOPATH/src/github.com/scylladb + +# Clone your fork, where is your GitHub account name +git clone https://github.com//scylla-operator.git +``` + +### Add Upstream Remote + +First you will need to add the upstream remote to your local git: +```bash +# Add 'upstream' to the list of remotes +git remote add upstream https://github.com/scylladb/scylla-operator.git + +# Verify the remote was added +git remote -v +``` +Now you should have at least `origin` and `upstream` remotes. You can also add other remotes to collaborate with other contributors. + +## Development + +To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch. + +### Building the project + +You can build the project using the Makefile commands: +* Open the Makefile and change the `IMG` environment variable to a repository you have access to. +* Run `make docker-push` and wait for the image to be built and uploaded in your repo. + +### Create a Branch + +From a console, create a new branch based on your fork and start working on it: + +```bash +# Ensure all your remotes are up to date with the latest +git fetch --all + +# Create a new branch that is based off upstream master. Give it a simple, but descriptive name. +# Generally it will be two to three words separated by dashes and without numbers. +git checkout -b feature-name upstream/master +``` + +Now you are ready to make the changes and commit to your branch. + +### Updating Your Fork + +During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to `rebase` your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean. + +Whenever you need to update your local repository, you never want to merge. You **always** will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (`git stash save -u ""`). + +```bash +git fetch --all +git rebase upstream/master +``` + +Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the [Git documentation](https://git-scm.com/docs/git-rebase), it will be well worth it. In a nutshell, rebasing does the following: +- "Unwinds" your local commits. Your local commits are removed temporarily from the history. +- The latest changes from upstream are added to the history +- Your local commits are re-applied one by one +- If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase. +- When done rebasing, you will see all of your commits in the history. + +## Submitting a Pull Request + +Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream. + +In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged. + +### Commit History + +To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits. + +```bash +# Inspect your commit history to determine if you need to squash commits +git log + +# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean. +# In this example, the last 5 commits will be opened in the git rebase tool. +git rebase -i HEAD~5 +``` + +Once your commit history is clean, ensure you have based on the [latest upstream](#updating-your-fork) before you open the PR. + +### Commit messages + +Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good! + +If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed. + +Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you've forgotten everything about what you just did, and you need to get up to speed quickly. + +If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don't want to close the associated issue just put #1234 and the change will get linked into the issue. + +Here is an example of a short commit message: + +``` +sidecar: log on reconcile loop - fixes #1234 +``` + +And here is an example of a longer one: +``` + +api: now supports host networking (#1234) + +The operator CRD now has a "network" property that can be used to +select host networking as well as setting the apropriate DNS policy. + +Fixes #1234 +``` + +### Submitting + +Go to the [Scylla Operator github](https://www.github.com/scylladb/scylla-operator) to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR. + +After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically. diff --git a/v1.9/_sources/eks.md.txt b/v1.9/_sources/eks.md.txt new file mode 100644 index 00000000000..b0024ba3227 --- /dev/null +++ b/v1.9/_sources/eks.md.txt @@ -0,0 +1,123 @@ +# Deploying Scylla on EKS + +This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won't work with different machine tiers. +It sets up the kubelets on EKS nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ssd-instance-store.html) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c + +# From inside the examples/eks folder +cd examples/eks +./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION" +``` + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### EKS Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +EKS_REGION=us-east-1 +EKS_ZONES=us-east-1a,us-east-1b,us-east-1c +CLUSTER_NAME=scylla-demo +``` + +#### Creating an EKS cluster + +For this guide, we'll create an EKS cluster with the following: + +* A NodeGroup of 3 `i3-2xlarge` Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having `scylla-clusters` toleration. + +``` + - name: scylla-pool + instanceType: i3.2xlarge + desiredCapacity: 3 + labels: + pool: "scylla-pool" + taints: + role: "scylla-clusters:NoSchedule" + ssh: + allow: true + kubeletExtraConfig: + cpuManagerPolicy: static +``` + +* A NodeGroup of 4 `c4.2xlarge` Nodes to deploy `cassandra-stress` later on. These nodes will only accept pods having `cassandra-stress` toleration. + +``` + - name: cassandra-stress-pool + instanceType: c4.2xlarge + desiredCapacity: 4 + labels: + pool: "cassandra-stress-pool" + taints: + role: "cassandra-stress:NoSchedule" + ssh: + allow: true +``` + +* A NodeGroup of 1 `i3.large` Node, where the monitoring stack and operator will be deployed. +``` + - name: monitoring-pool + instanceType: i3.large + desiredCapacity: 1 + labels: + pool: "monitoring-pool" + ssh: + allow: true +``` + +### Installing Required Tools + +#### Installing script third party dependencies + +Script requires several dependencies: +- Helm - See: https://docs.helm.sh/using_helm/#installing-helm +- eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html +- kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/ + + +#### Install the local provisioner + +We deploy the local volume provisioner, which will discover their mount points and make them available as PersistentVolumes. +``` +helm install local-provisioner examples/common/provisioner +``` + +#### Deploy tuning DaemonSet + +Deploy tuning DaemonSet, this will configure your disks and apply several optimizations +``` +kubectl apply -f node-setup-daemonset.yaml +``` + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting an EKS cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +eksctl delete cluster "${CLUSTER_NAME}" +``` diff --git a/v1.9/_sources/generic.md.txt b/v1.9/_sources/generic.md.txt new file mode 100644 index 00000000000..ef78f8501fc --- /dev/null +++ b/v1.9/_sources/generic.md.txt @@ -0,0 +1,375 @@ +# Deploying Scylla on a Kubernetes Cluster + +This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment: + +* [GKE](gke.md) + +## Prerequisites + +* A Kubernetes cluster +* A [Storage Class](https://kubernetes.io/docs/concepts/storage/storage-classes/) to provision [PersistentVolumes](https://kubernetes.io/docs/concepts/storage/persistent-volumes/). +* Helm 3 installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) if you need to install it. + Make sure that you enable the [stable repository](https://github.com/helm/charts#how-do-i-enable-the-stable-repository-for-helm-3) + +## Running locally + +Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and [Minikube](https://minikube.sigs.k8s.io/docs/) makes it a breeze. + +We need to give minikube a little bit more resources than default so start minikube like this: +```console +minikube start --cpus=6 +``` + +Then make kubectl aware of this local installation like this: +```console +eval $(minikube docker-env) +``` + +## Download Scylla Operator +In this guide you will be using the examples and manifests from [Scylla Operator repository](https://github.com/scylladb/scylla-operator), so start off by cloning it to your local machine. +```console +git clone git@github.com:scylladb/scylla-operator.git +cd scylla-operator +``` + +## Deploy Cert Manager +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` +This will install Cert Manager to provision a self-signed certificate. + +Once it's deployed, wait until Cert Manager is ready: + +```console +kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io +kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook +``` + +## Deploy Scylla Operator + +Deploy the Scylla Operator using the following commands: + +```console +kubectl apply -f examples/common/operator.yaml +``` + +This will install the operator in namespace `scylla-operator`. +Wait until it's ready: + +```console +kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator +``` + +If you want to check the logs of the operator you can do so with: + + ```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +## Create and Initialize a Scylla Cluster + +Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the `clusters.scylla.scylladb.com` resource. +Some of that resource's values are configurable, so feel free to browse `cluster.yaml` and tweak the settings to your liking. +Full details for all the configuration options can be found in the [Scylla Cluster CRD documentation](scylla_cluster_crd.md). + +When you are ready to create a Scylla cluster, simply run: + +```console +kubectl create -f examples/generic/cluster.yaml +``` + +We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment. + +```console +kubectl -n scylla get ScyllaCluster +``` + +Checking the pods that are created is as easy as: + +```console +kubectl -n scylla get pods +``` + +The output should be something like: + +```console +NAME READY STATUS RESTARTS AGE +simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 9m49s +simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 7m43s +simple-cluster-us-east-1-us-east-1a-2 2/2 Running 0 6m46s +``` + +It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: `CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER` as specified in `cluster.yaml`. + +In the above example we have the following properties: + + - CLUSTER_NAME: `simple-cluster` + - DATACENTER_NAME: `us-east-1` + - RACK_NAME: `us-east-1a` + - INSTANCE_NUMBER: An automatically generated number attached to the pod name. + +We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want. + +To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in `cluster.yaml`: + +```console +kubectl -n scylla get pod -l app=scylla +``` + +You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run: + +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +Checking the logs of the running scylla instances can be done like this: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla +``` + +### Configure host networking + +To squeeze the most out of your deployment it is sometimes necessary to employ [host networking](https://kubernetes.io/docs/concepts/services-networking/). +To enable this the CRD allows for specifying a `network` parameter as such: + +```yaml +version: 4.0.0 + agentVersion: 2.0.2 + cpuset: true + network: + hostNetworking: true +``` + +This will result in hosts network to be used for the Scylla Stateful Set deployment. + +### Configure container kernel parameters + +Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property `sysctls` that is a list of the desired key-value pairs to set. + +___For example___: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls to`fs.aio-max-nr=N`. + +```yaml +spec: + sysctls: + - "fs.aio-max-nr=2097152" +``` + +### Deploying Alternator + +The operator is also capable of deploying [Alternator](https://www.scylladb.com/alternator/) instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the `cluster.yaml` file from this: +```yaml +spec: + version: 4.0.0 + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +to this: +```yaml +spec: + version: 4.0.0 + alternator: + port: 8000 + writeIsolation: only_rmw_uses_lwt + agentVersion: 2.0.2 + developerMode: true + datacenter: + name: us-east-1 +``` +You can specify whichever port you want. + +You must provide desired write isolation, supported values are: "always", "forbid_rmw", "only_rmw_uses_lwt". +Difference between those isolation levels can be found in Scylla Alternator documentation. + +Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster. + +## Accessing the Database + +* From kubectl: + +To get a cqlsh shell in your new Cluster: +```console +kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh +> DESCRIBE KEYSPACES; +``` + + +* From inside a Pod: + +When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service's name follows the convention `-client`. +You can see this Service in your cluster by running: +```console +kubectl -n scylla describe service simple-cluster-client +``` +Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here's an example using the [Python Driver](https://github.com/datastax/python-driver): +```python +from cassandra.cluster import Cluster + +cluster = Cluster(['simple-cluster-client.scylla.svc']) +session = cluster.connect() +``` + +If you are running the Alternator you can access the API on the port you specified using plain http. + +## Configure Scylla + +The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called `scylla.yaml` that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration. + +* Create a ConfigMap the default name that the operator uses is `scylla-config`: +```console +kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml +``` +* Wait for the mount to propagate and then restart the cluster: +```console +kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a +``` +* The new config should be applied automatically by the operator, check the logs to be sure. + +Configuring `cassandra-rackdc.properties` is done by adding the file to the same mount as `scylla.yaml`. +```console +kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f - +``` +The operator will then apply the overridable properties `prefer_local` and `dc_suffix` if they are available in the provided mounted file. + +## Configure Scylla Manager Agent + +The operator creates a second container for each scylla instance that runs [Scylla Manager Agent](https://hub.docker.com/r/scylladb/scylla-manager-agent). +This container serves as a sidecar and it's the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups. + +To configure the agent you just create a new secret called _scylla-agent-config-secret_ and populate it with the contents in the `scylla-manager-agent.yaml` file like this: +```console +kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml +``` + +See [Scylla Manager Agent configuration](https://docs.scylladb.com/operating-scylla/manager/2.0/agent-configuration-file/) for a complete reference of the Scylla Manager agent config file. + +### Scylla Manager Agent auth token + +Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it's empty. +To check which value is being used, decode content of `-auth-token` secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart. + +## Set up monitoring + +To set up monitoring using Prometheus and Grafana follow [this guide](monitoring.md). + +## Scale Up + +The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale up a rack, change the `Spec.Members` field of the rack to the desired value. +* To add a new rack, append the `racks` list with a new rack. Remember to choose a different rack name for the new rack. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Benchmark with cassandra-stress + +After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster. + +> Because cassandra-stress doesn't scale well to multiple cores, we use multiple jobs with a small core count for each + +```bash + +# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each. +# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec. +hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000 +kubectl apply -f scripts/cassandra-stress.yaml +``` + +Make sure you set the proper arguments in case you have altered things such as _name_ or _namespace_. + +```bash +./hack/cass-stress-gen.py -h +usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT] + [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR] + +Generate cassandra-stress job templates for Kubernetes. + +optional arguments: + -h, --help show this help message and exit + --num-jobs NUM_JOBS number of Kubernetes jobs to generate - defaults to 1 + --name NAME name of the generated yaml file - defaults to cassandra-stress + --namespace NAMESPACE + namespace of the cassandra-stress jobs - defaults to "default" + --scylla-version SCYLLA_VERSION + version of scylla server to use for cassandra-stress - defaults to 4.0.0 + --host HOST ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc + --cpu CPU number of cpus that will be used for each job - defaults to 1 + --memory MEMORY memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu + --ops OPS number of operations for each job - defaults to 10000000 + --threads THREADS number of threads used for each job - defaults to 50 * cpu + --limit LIMIT rate limit for each job - defaults to no rate-limiting + --connections-per-host CONNECTIONS_PER_HOST + number of connections per host - defaults to number of cpus + --print-to-stdout print to stdout instead of writing to a file + --nodeselector NODESELECTOR + nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla +``` +While the benchmark is running, open up Grafana and take a look at the monitoring metrics. + +After the Jobs finish, clean them up with: +```bash +kubectl delete -f scripts/cassandra-stress.yaml +``` + +## Scale Down + +The operator supports scale down of a rack. To make the changes, you can use: +```console +kubectl -n scylla edit ScyllaCluster simple-cluster +``` +* To scale down a rack, change the `Spec.Members` field of the rack to the desired value. +* After editing and saving the yaml, check your cluster's Status and Events for information on what's happening: +```console +kubectl -n scylla describe ScyllaCluster simple-cluster +``` + +## Clean Up + +To clean up all resources associated with this walk-through, you can run the commands below. + +**NOTE:** this will destroy your database and delete all of its associated data. + +```console +kubectl delete -f examples/generic/cluster.yaml +kubectl delete -f examples/common/operator.yaml +kubectl delete -f examples/common/cert-manager.yaml +``` + +## Troubleshooting + +If the cluster does not come up, the first step would be to examine the operator's logs: + +```console +kubectl -n scylla-operator logs deployment.apps/scylla-operator +``` + +If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances: + +```console +kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 +``` diff --git a/v1.9/_sources/gke.md.txt b/v1.9/_sources/gke.md.txt new file mode 100644 index 00000000000..7e5a290f657 --- /dev/null +++ b/v1.9/_sources/gke.md.txt @@ -0,0 +1,170 @@ +# Deploying Scylla on GKE + +This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and uses [local sdd disks](https://cloud.google.com/kubernetes-engine/docs/how-to/persistent-volumes/local-ssd) in RAID0 for maximum performance. + +Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the [general guide](generic.md). + +## TL;DR; + +If you don't want to run the commands step-by-step, you can just run a script that will set everything up for you: +```bash +# Edit according to your preference +GCP_USER=$(gcloud config list account --format "value(core.account)") +GCP_PROJECT=$(gcloud config list project --format "value(core.project)") +GCP_ZONE=us-west1-b + +# From inside the examples/gke folder +cd examples/gke +./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE" + +# Example: +# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b +``` + +:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region. + +After you deploy, see how you can [benchmark your cluster with cassandra-stress](#benchmark-with-cassandra-stress). + +## Walkthrough + +### Google Kubernetes Engine Setup + +#### Configure environment variables + +First of all, we export all the configuration options as environment variables. +Edit according to your own environment. + +``` +GCP_USER=$( gcloud config list account --format "value(core.account)" ) +GCP_PROJECT=$( gcloud config list project --format "value(core.project)" ) +GCP_REGION=us-west1 +GCP_ZONE=us-west1-b +CLUSTER_NAME=scylla-demo +CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" ) +``` + +#### Creating a GKE cluster + +First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called `systemconfig.yaml` with the following content: +``` +kubeletConfig: + cpuManagerPolicy: static +``` + +Then we'll create a GKE cluster with the following: + +1. A NodePool of 2 `n1-standard-8` Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes. + ``` + gcloud container \ + clusters create "${CLUSTER_NAME}" \ + --cluster-version "${CLUSTER_VERSION}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-8" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --image-type "UBUNTU_CONTAINERD" \ + --system-config-from-file=systemconfig.yaml \ + --enable-stackdriver-kubernetes \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +2. A NodePool of 2 `n1-standard-32` Nodes to deploy `cassandra-stress` later on. + + ``` + gcloud container --project "${GCP_PROJECT}" \ + node-pools create "cassandra-stress-pool" \ + --cluster "${CLUSTER_NAME}" \ + --zone "${GCP_ZONE}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "2" \ + --disk-type "pd-ssd" --disk-size "20" \ + --node-taints role=cassandra-stress:NoSchedule \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +3. A NodePool of 4 `n1-standard-32` Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local SSDs attached, which are combined into a RAID0 array by using gcloud beta feature `ephemeral-storage`. It is important to disable `autoupgrade` and `autorepair`. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it's better to handle upgrades manually, with more control over the process and error handling. + ``` + gcloud beta container \ + node-pools create "scylla-pool" \ + --cluster "${CLUSTER_NAME}" \ + --node-version "${CLUSTER_VERSION}" \ + --machine-type "n1-standard-32" \ + --num-nodes "4" \ + --disk-type "pd-ssd" --disk-size "20" \ + --ephemeral-storage local-ssd-count="8" \ + --node-taints role=scylla-clusters:NoSchedule \ + --node-labels scylla.scylladb.com/gke-ephemeral-storage-local-ssd=true \ + --image-type "UBUNTU_CONTAINERD" \ + --no-enable-autoupgrade \ + --no-enable-autorepair + ``` + +#### Setting Yourself as `cluster-admin` +> (By default GKE doesn't give you the necessary RBAC permissions) + +Get the credentials for your new cluster +``` +gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}" +``` + +Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission `container.clusterRoleBindings.create`. +The easiest way to obtain this permission is to enable the `Kubernetes Engine Admin` role for your user in the GCP IAM web interface. +``` +kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}" +``` + + +### Installing Required Tools + +#### Installing Helm + +If you don't have Helm installed, Go to the [helm docs](https://docs.helm.sh/using_helm/#installing-helm) to get the binary for your distro. + +#### Install xfs-formatter DaemonSet + +To run Scylla, it is necessary to convert ephemeral storage's filesystem to `xfs`. Deploy the `xfs-formatter` DaemonSet to have it taken care of. +Unfortunately, GKE is only able to provision the ephemeral storage with `ext4` filesystem while Scylla requires `xfs` filesystem. Deploying the `xfs-format` DaemonSet will format the storage as `xfs` and prevent GKE from reformatting it back to `ext4`. + +Note that despite our best efforts, this solution is only a workaround. Its robustness depends on GKE's disk formatting logic remaining unchanged, for which there is no guarantee. +``` +kubectl apply -f examples/gke/xfs-formatter-daemonset.yaml +``` + +#### Install the local provisioner + +Afterwards, deploy the local volume provisioner, which will discover the RAID0 arrays' mount points and make them available as PersistentVolumes. +``` +helm install local-provisioner examples/common/provisioner +``` + +### Deploy Scylla cluster +In order for the example to work you need to modify the cluster definition in the following way: + +``` +sed -i "s//${GCP_REGION}/g;s//${GCP_ZONE}/g" examples/gke/cluster.yaml +``` + +This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created. + +### Installing the Scylla Operator and Scylla + +Now you can follow the [generic guide](generic.md) to install the operator and launch your Scylla cluster in a highly performant environment. + +#### Accessing the database + +Instructions on how to access the database can also be found in the [generic guide](generic.md). + +### Deleting a GKE cluster + +Once you are done with your experiments delete your cluster using the following command: + +``` +gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}" +``` diff --git a/v1.9/_sources/helm.md.txt b/v1.9/_sources/helm.md.txt new file mode 100644 index 00000000000..c226ee8c13c --- /dev/null +++ b/v1.9/_sources/helm.md.txt @@ -0,0 +1,339 @@ +# Deploying Scylla stack using Helm Charts + +In this example we will install Scylla stack on Kubernetes. This includes the following components: +- Scylla Operator +- Scylla Manager +- Scylla + +We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator. + +### Prerequisites + +- Kubernetes 1.16+ +- Helm 3+ + +### TL;DR + +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +kubectl apply -f examples/common/cert-manager.yaml +helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator +helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager +helm install scylla scylla/scylla --create-namespace --namespace scylla +``` + +### Deploy Cert Manager + +This step is optional if you want to use your own certificate. +If you don't have one, make sure to not disable autogeneration using Scylla Operator Helm Chart. + +First deploy Cert Manager, you can either follow [upsteam instructions](https://cert-manager.io/docs/installation/kubernetes/) or use following command: + +```console +kubectl apply -f examples/common/cert-manager.yaml +``` + +Once it's deployed, wait until all Cert Manager pods will enter into Running state: + +```console +kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s +``` + +### Helm Chart repository + +To install Scylla Helm Chart repository execute the following commands: +``` +helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable +helm repo update +``` + +Then you can search through repository, it should contain at least three Helm charts: +``` +helm search repo scylla +NAME CHART VERSION APP VERSION DESCRIPTION +scylla/scylla 1.0.1 v1.0.1 Scylla is a close-to-the-hardware rewrite of Ca... +scylla/scylla-manager 1.0.1 v1.0.1 Scylla Manager automates database operations. +scylla/scylla-operator 1.0.1 v1.0.1 Scylla Operator is a Kubernetes Operator for ma... +``` + +All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit. + +### Scylla Operator Chart + +This chart is very simple, most interesting customizable fields are `image`, `resources` and `webhook`. +All others can be looked up in Chart source in Scylla Operator repository. + +#### image + +Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change `pullPolicy` if default one does not +fullfill your needs. In [Kubernetes documentation](https://kubernetes.io/docs/concepts/containers/images/) you +can read more about different pull policies. + +Image URL will be composed based on these fields in follwing pattern: +`repository/scylla-operator:tag` +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +#### resources + +You can customize how much resources will be allocated for Operator pods via `resource` field: +```yaml +resources: + limits: + cpu: 100m + memory: 128Mi + requests: + cpu: 100m + memory: 32Mi +``` + +To read more about resource specification, follow [Kubernetes documentation](https://kubernetes.io/docs/concepts/configuration/manage-resources-containers/). + +#### webhook + +Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate. + +`createSelfSignedCertificate` specifies whether a self-signed certificate should be created using Cert Manager +`certificateSecretName`: name of a secret containing custom certificate. + +```yaml +webhook: + createSelfSignedCertificate: true + certificateSecretName: "" +``` + +#### Customization + +You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values. + +You can find an example in Scylla Operator repository under `examples/helm/values.operator.yaml` + +#### Installation + +To deploy Scylla Operator using customized values file execute the following: +``` +helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator +``` + +### Scylla Helm Chart + +Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it. + +#### Customization + +Versions of images used in the cluster can be set via `scyllaImage` and `agentImage` +```yaml +scyllaImage: + repository: scylladb/scylla + tag: 4.3.0 + +agentImage: + repository: scylladb/scylla-manager-agent + tag: 2.2.1 +``` + +A minimal Scylla cluster can be expressed as: +```yaml +datacenter: us-east-1 +racks: +- name: us-east-1b + members: 2 + storage: + capacity: 5G + resources: + limits: + cpu: 1 + memory: 1Gi + requests: + cpu: 1 + memory: 1Gi +``` + +Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory. + +For other customizable fields, please refer to [ScyllaCluster CRD definition](scylla_cluster_crd.md). +CRD Rack Spec and Helm Chart Rack should have the same fields. + +#### Installation + +To deploy Scylla cluster using customzied values file execute the following command: +``` +helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla +``` + +Scylla Operator will provision this cluster on your K8s environment. + +### Scylla Manager Helm Chart + +Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster. + +To read more about Scylla Manager see [Manager guide](manager.md). + +#### Scylla Manager + +To set version of used Scylla Manager you can use `image` field: +```yaml +image: + repository: scylladb + pullPolicy: IfNotPresent + tag: 2.2.1 +``` +To control how many resources are allocated for Scylla Manager use `resource` field: +```yaml +resources: + limits: + cpu: 500m + memory: 500Mi + requests: + cpu: 500m + memory: 500Mi +``` + +#### Scylla Manager Controller + +Similarly Scylla Manager Controller image can be customized: + +```yaml +controllerImage: + repository: scylladb + pullPolicy: IfNotPresent + tag: "" +``` + +And allocated resources: +```yaml +controllerResources: + limits: + cpu: 100m + memory: 30Mi + requests: + cpu: 100m + memory: 20Mi +``` + +#### Scylla + +To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It's definition should land as a `scylla` field. + +#### Customization + +All others customizable fields can be looked up in Chart source in Scylla Operator repository. + +#### Installation + +To deploy Scylla Manager using customized values file execute the following command: +``` +helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager +``` + +## Results + +Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn't it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces. + +Scylla Operator: +```shell +$ kubectl -n scylla-operator get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-operator-5dbcb54f5c-vjm4m 1/1 Running 0 51s +pod/scylla-operator-5dbcb54f5c-wfjbw 1/1 Running 0 51s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-operator-webhook ClusterIP 10.105.207.130 443/TCP 51s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-operator 2/2 2 2 51s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-operator-5dbcb54f5c 2 2 2 51s + +``` + +Operator is running! + +Scylla Manager: +```shell +$ kubectl -n scylla-manager get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-manager-669db64dd-bcm4v 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-drbth 1/1 Running 0 89s +pod/scylla-manager-controller-844ccc56c4-rhwqx 1/1 Running 0 89s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-manager ClusterIP 10.105.231.53 80/TCP,5090/TCP 89s +service/scylla-manager-client ClusterIP None 9180/TCP,5090/TCP 89s + +NAME READY UP-TO-DATE AVAILABLE AGE +deployment.apps/scylla-manager 1/1 1 1 89s +deployment.apps/scylla-manager-controller 2/2 2 2 89s + +NAME DESIRED CURRENT READY AGE +replicaset.apps/scylla-manager-669db64dd 1 1 1 89s +replicaset.apps/scylla-manager-controller-844ccc56c4 2 2 2 89s + + +``` + +Good to go, ready to serve! + +Scylla itself: +```shell +$ kubectl -n scylla get all + +NAME READY STATUS RESTARTS AGE +pod/scylla-us-east-1-us-east-1b-0 2/2 Running 0 5m58s +pod/scylla-us-east-1-us-east-1b-1 2/2 Running 0 4m29s + +NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE +service/scylla-client ClusterIP None 9180/TCP,5090/TCP 5m59s +service/scylla-us-east-1-us-east-1b-0 ClusterIP 10.43.149.92 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 5m58s +service/scylla-us-east-1-us-east-1b-1 ClusterIP 10.43.49.0 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 4m29s + +NAME READY AGE +statefulset.apps/scylla-us-east-1-us-east-1b 2/2 5m59s +``` + +Two running nodes, exactly what we were asking for. + +## Monitoring + +To spin up a Prometheus monitoring refer to [monitoring guide](monitoring.md). + +Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor: +```yaml +serviceMonitor: + create: false +``` + +Change `create` to `true` and update your current deployment using: +```shell +helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml +``` + +Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics. + +## Cleanup + +To remove these applications you can simply uninstall them using Helm CLI: +```shell +helm uninstall scylla -n scylla +helm uninstall scylla-manager -n scylla-manager +helm uninstall scylla-operator -n scylla-operator +``` diff --git a/v1.9/_sources/index.rst.txt b/v1.9/_sources/index.rst.txt new file mode 100644 index 00000000000..2746d10038c --- /dev/null +++ b/v1.9/_sources/index.rst.txt @@ -0,0 +1,62 @@ +============================= +Scylla Operator Documentation +============================= + +.. toctree:: + :hidden: + :maxdepth: 1 + + generic + eks + gke + helm + manager + monitoring + migration + nodeoperations/index + performance + upgrade + releases + known_issues + scylla_cluster_crd + contributing + +Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades. + +.. image:: logo.png + :width: 200pt + +For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University. + +scylla-operator is a Kubernetes Operator for managing Scylla clusters. + +Currently it supports: + +* Deploying multi-zone clusters +* Scaling up or adding new racks +* Scaling down +* Monitoring with Prometheus and Grafana +* Integration with `Scylla Manager `_ +* Dead node replacement +* Version Upgrade +* Backup +* Repairs +* Autohealing +* Monitoring with Prometheus and Grafana + +**Choose a topic to begin**: + +* :doc:`Deploying Scylla on a Kubernetes Cluster ` +* :doc:`Deploying Scylla on EKS ` +* :doc:`Deploying Scylla on GKE ` +* :doc:`Deploying Scylla Manager on a Kubernetes Cluster ` +* :doc:`Deploying Scylla stack using Helm Charts ` +* :doc:`Setting up Monitoring using Prometheus and Grafana ` +* :doc:`Node operations ` +* :doc:`Performance tuning [Experimental] ` +* :doc:`Upgrade procedures ` +* :doc:`Releases ` +* :doc:`Known issues ` +* :doc:`Scylla Cluster Custom Resource Definition (CRD) ` +* :doc:`Contributing to the Scylla Operator Project ` diff --git a/v1.9/_sources/known_issues.md.txt b/v1.9/_sources/known_issues.md.txt new file mode 100644 index 00000000000..1af3a7bfdd1 --- /dev/null +++ b/v1.9/_sources/known_issues.md.txt @@ -0,0 +1,14 @@ +# Known issues + +### Scylla Manager does not boot up on Minikube + +If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for [TRUNCATE queries](#truncate-queries-does-not-work-on-minikube). + +### TRUNCATE queries does not work on Minikube + +The `TRUNCATE` queries requires [hairpinning](https://en.wikipedia.org/wiki/Hairpinning) to be enabled. On minikube this is disabled by default. + +To fix it execute the following command: +``` +minikube ssh sudo ip link set docker0 promisc on +``` diff --git a/v1.9/_sources/manager.md.txt b/v1.9/_sources/manager.md.txt new file mode 100644 index 00000000000..470ef951202 --- /dev/null +++ b/v1.9/_sources/manager.md.txt @@ -0,0 +1,258 @@ +# Deploying Scylla Manager on a Kubernetes Cluster + +Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way. + +Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager [Proprietary Software License Agreement](https://www.scylladb.com/scylla-manager-software-license-agreement/) for details. + +## Prerequisites + +* Kubernetes cluster +* Scylla Operator - see [generic guide](generic.md) + +## Architecture + +Scylla Manager in K8s consist of: +- Dedicated Scylla Cluster + + Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace. + +- Scylla Manager Controller + + Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states. + 1. What user wants - task definition in CRD. + 2. What Controller registered - Task name to Task ID mapping - CRD status. + 3. Scylla Manager task listing - internal state of Scylla Manager. + + When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling. + +- Scylla Manager + + Regular Scylla Manager, the same used in cloud and bare metal deployments. + + + +## Deploy Scylla Manager + +Deploy the Scylla Manager using the following commands: + +```console +kubectl apply -f examples/common/manager.yaml +``` + +This will install the Scylla Manager in the `scylla-manager` namespace. +You can check if the Scylla Manager is up and running with: + +```console +kubectl -n scylla-manager get pods +NAME READY STATUS RESTARTS AGE +scylla-manager-cluster-manager-dc-manager-rack-0 2/2 Running 0 37m +scylla-manager-controller-0 1/1 Running 0 28m +scylla-manager-scylla-manager-7bd9f968b9-w25jw 1/1 Running 0 37m +``` + +As you can see there are three pods: +* `scylla-manager-cluster-manager-dc-manager-rack-0` - is a single node Scylla cluster. +* `scylla-manager-controller-0` - Scylla Manager Controller. +* `scylla-manager-scylla-manager-7bd9f968b9-w25jw` - Scylla Manager. + +To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command: + + ```console +kubectl -n scylla-manager logs scylla-manager-controller-0 +``` + +The output should be something like: +```console +{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"} +``` + +To check logs of Scylla Manager itself, use following command: +```console +kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + +The output should be something like: + +```console +{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"} +``` + +If there are no errors in the logs, let's spin a Scylla Cluster. + +## Cluster registration + + +When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster. + +See [generic tutorial](generic.md) to spawn your cluster. + +Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager. + +Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager. + + ```console +kubectl -n scylla describe Cluster + +[...] +Status: + Manager Id: d1d532cd-49f2-4c97-9263-25126532803b + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` +You can use this ID to talk to Scylla Manager using `sctool` CLI installed in Scylla Manager Pod. +You can also use Cluster name in `namespace/cluster-name` format. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator). + +In this task listing we can see CQL and REST healthchecks. + +## Task scheduling + +You can either define tasks prior Cluster creation, or for existing Cluster. +Let's edit already running cluster definition to add repair and backup task. +```console +kubectl -n scylla edit Cluster simple-cluster +``` + +Add following task definition to Cluster spec: +``` + repairs: + - name: "users repair" + keyspace: ["users"] + interval: "1d" + backup: + - name: "weekly backup" + location: ["s3:cluster-backups"] + retention: 3 + interval: "7d" + - name: "daily backup" + location: ["s3:cluster-backups"] + retention: 7 + interval: "1d" +``` + +For full task definition configuration consult [Scylla Cluster CRD](scylla_cluster_crd.md). + +**Note**: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up. + +Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager. + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list + +Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b) +╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮ +│ Task │ Arguments │ Next run │ Status │ +├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤ +│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b │ │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE │ +│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372 │ -L s3:cluster-backups --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d) │ NEW │ +│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd │ │ 23 Sep 20 14:29:57 CEST (+1m) │ NEW │ +│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a │ │ 23 Sep 20 14:38:42 CEST │ NEW │ +╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯ + +``` + +As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly. + +To check progress of run you can use following command: + +```console +kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a +Status: RUNNING +Start time: 23 Sep 20 14:38:42 UTC +Duration: 13s +Progress: 2.69% +Datacenters: + - us-east-1 ++--------------------+-------+ +| system_auth | 8.06% | +| system_distributed | 0.00% | +| system_traces | 0.00% | ++--------------------+-------+ + +``` +Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing. + +## Clean Up + +To clean up all resources associated with Scylla Manager, you can run the commands below. + +**NOTE:** this will destroy your Scylla Manager database and delete all of its associated data. + +```console +kubectl delete -f examples/common/manager.yaml +``` + +## Troubleshooting + +**Manager is not running** + +If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs: + +```console +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller +kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw +``` + + +**My task wasn't scheduled** + +If your task wasn't scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs. + +Example: + +Following status describes error when backup task cannot be scheduled, due to lack of access to bucket: +```console +Status: + Backups: + Error: create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug" + Id: 00000000-0000-0000-0000-000000000000 + Interval: 0 + Location: + s3:manager-test + Name: adhoc backup + Num Retries: 3 + Retention: 3 + Start Date: now + Manager Id: 2b9dbe8c-9daa-4703-a66d-c29f63a917c8 + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.0.0 +``` + +Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status. \ No newline at end of file diff --git a/v1.9/_sources/migration.md.txt b/v1.9/_sources/migration.md.txt new file mode 100644 index 00000000000..cdd7a7e8522 --- /dev/null +++ b/v1.9/_sources/migration.md.txt @@ -0,0 +1,146 @@ +## Version migrations + + +### `v0.3.0` -> `v1.0.0` migration + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common kind +which is easier to disambiguate (`ScyllaCluster`). +***This change is backward incompatible, which means manual migration is needed.*** + +This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the [upgrade guide](upgrade.md) where full deletion is requested, this procedure shouldn't cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn't run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first. + +***Read the whole procedure and make sure you understand what is going on before executing any of the commands!*** + +In case of any issues or questions regarding this procedure, you're welcomed on our [Scylla Users Slack](http://slack.scylladb.com/) +on #kubernetes channel. + +### Procedure + +1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` + All below commands will use `scylla` namespace and `simple-cluster` as a cluster name. +1. Make sure you're using v1.0.0 tag: + ``` + git checkout v1.0.0 + ``` +1. Upgrade your `cert-manager` to `v1.0.0`. If you installed it from a static file from this repo, simply execute the following: + ``` + kubectl apply -f examples/common/cert-manager.yaml + ``` + If your `cert-manager` was installed in another way, follow official instructions on `cert-manager` website. +1. `examples/common/operator.yaml` file contains multiple resources. Extract **only** `CustomResourceDefinition` to separate file. +1. Install v1.0.0 CRD definition from file created in the previous step: + ``` + kubectl apply -f examples/common/crd.yaml + ``` +1. Save your existing `simple-cluster` Cluster definition to a file: + ``` + kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml + ``` +1. Migrate `Kind` and `ApiVersion` to new values using: + ``` + sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml + sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml + ``` +1. Install migrated CRD instance + ``` + kubectl apply -f existing-cluster.yaml + ``` + At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator. +1. Get UUID of newly created ScyllaCluster resource: + ``` + kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}" + + 12a3678d-8511-4c9c-8a48-fa78d3992694 + ``` + Save output UUID somewhere, it will be referred as `` in commands below. + + ***Depending on your shell, you might get additional '%' sign at the end of UUID, make sure to remove it!*** + +1. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters: + ``` + kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]' + ``` + Amend role name according to your cluster name, it should look like `-member`. +1. Get a list of all Services associated with your cluster. First get list of all services: + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 109m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 108m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 106m + + ``` +1. For each service, change its `ownerReference` to point to new CRD instance: + ``` + kubectl -n scylla patch svc --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with Service name, and `` with saved UUID from one of the previous steps. +1. Get a list of all Services again to see if none was deleted. Check also "Age" column, it shouldn't be lower than previous result. + ``` + kubectl -n scylla get svc -l "scylla/cluster=simple-cluster" + + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 110m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.23.96 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 110m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.66.22 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 109m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.246.25 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 107m + + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m + ``` +1. For each StatefulSet from previous step, change its `ownerReference` to point to new CRD instance. + + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":""}]' + ``` + Replace `` with StatefulSet name, and `` with saved UUID from one of the previous steps. + +1. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. + Checkout `v0.3.0` version, and remove Scylla Operator, and old CRD: + ``` + git checkout v0.3.0 + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0`, and install upgraded Scylla Operator: + ``` + git checkout v1.0.0 + kubectl apply -f examples/common/operator.yaml + ``` +1. Wait until Scylla Operator boots up: + ``` + kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s + ``` +1. Get a list of StatefulSets associated with your cluster: + ``` + kubectl -n scylla get sts -l "scylla/cluster=simple-cluster" + + NAME READY AGE + simple-cluster-us-east-1-us-east-1a 3/3 104m +1. For each StatefulSet from previous step, change its sidecar container image to `v1.0.0`, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one. + ``` + kubectl -n scylla patch sts --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + kubectl -n scylla rollout status sts + ``` + Replace `` with StatefulSet name. +1. If you're using Scylla Manager, bump Scylla Manager Controller image to `v1.0.0` + ``` + kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]' + ``` +1. Your Scylla cluster is now migrated to `v1.0.0`. diff --git a/v1.9/_sources/monitoring.md.txt b/v1.9/_sources/monitoring.md.txt new file mode 100644 index 00000000000..9f2651c5737 --- /dev/null +++ b/v1.9/_sources/monitoring.md.txt @@ -0,0 +1,180 @@ +# Monitoring + +Scylla Operator 1.8 introduced a new API resource `ScyllaDBMonitoring`, allowing users to deploy a managed monitoring +setup for their Scylla Clusters. + +```yaml +apiVersion: scylla.scylladb.com/v1alpha1 +kind: ScyllaDBMonitoring +metadata: + name: example +spec: + type: Platform + endpointsSelector: + matchLabels: + app.kubernetes.io/name: scylla + scylla-operator.scylladb.com/scylla-service-type: identity + scylla/cluster: replace-with-your-scyllacluster-name + components: + prometheus: + storage: + volumeClaimTemplate: + spec: + resources: + requests: + storage: 1Gi + grafana: + exposeOptions: + webInterface: + ingress: + ingressClassName: haproxy + dnsDomains: + - test-grafana.test.svc.cluster.local + annotations: + haproxy-ingress.github.io/ssl-passthrough: "true" +``` + +For details, refer to the below command: +```console +$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1 +``` + +## Deploy managed monitoring + +**Note**: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions. + +### Requirements + +Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see: +* [Deploying Scylla on a Kubernetes Cluster](generic.md) +* [Deploying Scylla stack using Helm Charts](helm.md) + +The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps. + +#### Deploy Prometheus Operator +Deploy Prometheus Operator using kubectl: +```console +$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator +``` + +##### Wait for Prometheus Operator to roll out +```console +$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator +deployment "prometheus-operator" successfully rolled out +``` + +#### Deploy HAProxy Ingress +Deploy HAProxy Ingress using kubectl: +```console +$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress +``` + +##### Wait for HAProxy Ingress to roll out +```console +$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress +deployment "haproxy-ingress" successfully rolled out +``` + +### Deploy ScyllaDBMonitoring + +First, update the `endpointsSelector` in `examples/monitoring/v1alpha1/scylladbmonitoring.yaml` with a label +matching your ScyllaCluster instance name. + +Deploy the monitoring setup using kubectl: +```console +$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml +``` + +Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources. + +#### Wait for ScyllaDBMonitoring to roll out +```console +$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met + +$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example +scylladbmonitoring.scylla.scylladb.com/example condition met +``` + +#### Wait for Prometheus to roll out +```console +$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example +statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb... +``` + +#### Wait for Grafana to roll out +```console +$ kubectl rollout status --timeout=5m deployments.apps/example-grafana +deployment "example-grafana" successfully rolled out +``` + +### Accessing Grafana + +For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller's IP address but most clients and tools allow setting the SNI field manually. + +### Prerequisites + +To access Grafana, you first need to collect the serving CA and the credentials. + +```console +$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )" +$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )" +$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )" +``` + +### Connecting through Ingress using a resolvable domain + +In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like `*.app.mydomain` pointing to the Ingress controller's external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller's A record. + +Note: The ScyllaDBMonitoring example creates an Ingress object with `test-grafana.test.svc.cluster.local` DNS domain that you should adjust to your domain. Below examples use `example-grafana.apps.mydomain`. + +Note: To test a resolvable domain from your machine without creating DNS records, you can adjust `/etc/hosts` or similar. + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` + +### Connecting through Ingress using an unresolvable domain + +To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller's IP that can be resolved externally. Again, there are many ways to do so beyond the below examples. + +Unless stated otherwise, we assume your Ingress is running on port 443. + +```console +$ INGRESS_PORT=443 +``` + +#### Variants + +##### Ingress ExternalIP + +When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address. + +```console +$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )" +``` + +##### Ingress NodePort + +NodePort is slightly less convenient, but it's available in development clusters as well. + +```console +$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )" +$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )" +``` + +##### Connection + +```console +$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}" +200 +``` diff --git a/v1.9/_sources/nodeoperations/automatic_cleanup.md.txt b/v1.9/_sources/nodeoperations/automatic_cleanup.md.txt new file mode 100644 index 00000000000..5e0535cca97 --- /dev/null +++ b/v1.9/_sources/nodeoperations/automatic_cleanup.md.txt @@ -0,0 +1,6 @@ +# Automatic cleanup and replacement in case when k8s node is lost + +In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity. + +When `automaticOrphanedNodeCleanup` flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources. diff --git a/v1.9/_sources/nodeoperations/index.rst.txt b/v1.9/_sources/nodeoperations/index.rst.txt new file mode 100644 index 00000000000..d5667b9a4f7 --- /dev/null +++ b/v1.9/_sources/nodeoperations/index.rst.txt @@ -0,0 +1,22 @@ +====================================== +Node operations using Scylla Operator +====================================== + +.. toctree:: + :hidden: + :maxdepth: 2 + + scylla_upgrade + replace_node + automatic_cleanup + maintenance_mode + restore + + +Choose a topic: + +* :doc:`Scylla version upgrade ` +* :doc:`Replace Scylla node ` +* :doc:`Automatic cleanup and replacement when k8s node is lost ` +* :doc:`Maintenance mode ` +* :doc:`Restore from backup ` \ No newline at end of file diff --git a/v1.9/_sources/nodeoperations/maintenance_mode.md.txt b/v1.9/_sources/nodeoperations/maintenance_mode.md.txt new file mode 100644 index 00000000000..c976ecc2b87 --- /dev/null +++ b/v1.9/_sources/nodeoperations/maintenance_mode.md.txt @@ -0,0 +1,19 @@ +# Maintenance mode + +When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive. + +This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again. + +To enable maintenance mode add `scylla/node-maintenance` label to service in front of Scylla Pod. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance="" +``` + +To disable, simply remove this label from service. + +```bash +kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance- +``` diff --git a/v1.9/_sources/nodeoperations/replace_node.md.txt b/v1.9/_sources/nodeoperations/replace_node.md.txt new file mode 100644 index 00000000000..3e6a8c7f024 --- /dev/null +++ b/v1.9/_sources/nodeoperations/replace_node.md.txt @@ -0,0 +1,74 @@ +# Replacing a Scylla node + +## Replacing a dead node +In the case of a host failure, it may not be possible to bring back the node to life. + +Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth). + +_This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time_ + +**Procedure** + +1. Verify the status of the node using `nodetool status` command, the node with status DN is down and need to be replaced + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.63 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + DN 10.43.43.51 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Identify service which is bound to down node by checking IP address + ```bash + kubectl -n scylla get svc + NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE + simple-cluster-client ClusterIP None 9180/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-0 ClusterIP 10.43.231.189 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h12m + simple-cluster-us-east-1-us-east-1a-1 ClusterIP 10.43.125.110 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h11m + simple-cluster-us-east-1-us-east-1a-2 ClusterIP 10.43.43.51 7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP 3h5m + ``` +1. Drain node which we would like to replace using. **This command may delete your data from local disks attached to given node!** + ```bash + kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data + ``` + + Pod which will be replaced should enter the `Pending` state + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h21m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h19m + simple-cluster-us-east-1-us-east-1a-2 0/2 Pending 0 8m14s + ``` +1. To being node replacing, add `scylla/replace=""` label to service bound to pod we are replacing. + ```bash + kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace="" + ``` + Your failed Pod should be recreated on available k8s node + ```bash + kubectl -n scylla get pods + NAME READY STATUS RESTARTS AGE + simple-cluster-us-east-1-us-east-1a-0 2/2 Running 0 3h27m + simple-cluster-us-east-1-us-east-1a-1 2/2 Running 0 3h25m + simple-cluster-us-east-1-us-east-1a-2 1/2 Running 0 9s + ``` + Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. + After bootstraping is over, your new Pod should be ready to go. + Old one shouldn't be no longer visible in `nodetool status` + ```bash + kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status + Datacenter: us-east-1 + ===================== + Status=Up/Down + |/ State=Normal/Leaving/Joining/Moving + -- Address Load Tokens Owns Host ID Rack + UN 10.43.125.110 74.62 KB 256 ? 8ebd6114-969c-44af-a978-87a4a6c65c3e us-east-1a + UN 10.43.231.189 91.03 KB 256 ? 35d0cb19-35ef-482b-92a4-b63eee4527e5 us-east-1a + UN 10.43.191.172 74.77 KB 256 ? 1ffa7a82-c41c-4706-8f5f-4d45a39c7003 us-east-1a + ``` +1. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. + You can use [Scylla Manager](../manager.md) to run the repair. diff --git a/v1.9/_sources/nodeoperations/restore.md.txt b/v1.9/_sources/nodeoperations/restore.md.txt new file mode 100644 index 00000000000..b4d85573cff --- /dev/null +++ b/v1.9/_sources/nodeoperations/restore.md.txt @@ -0,0 +1,89 @@ +# Restore from backup + +This procedure will describe how to restore from backup taken using [Scylla Manager](../manager.md) to a fresh **empty** cluster of any size. + +First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod. +```bash +sctool backup list -c --all-clusters -L +``` + +Where: +* `CLUSTER_ID` - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status. +* `BACKUP_LOCATION` - is a location where backup is stored. For example, for bucket called `backups` stored in AWS S3, location is `s3:backups`. + +```bash +sctool backup list -c simple-cluster --all-clusters -L s3:backups +Snapshots: + - sm_20201227144037UTC (409MiB) + - sm_20201228145917UTC (434MiB) +Keyspaces: + - users (9 tables) + - system_auth (2 tables) + - system_distributed (3 tables) + - system_schema (13 tables) + - system_traces (5 tables) +``` + +To get the list of files use: + +```bash +sctool backup files -c -L -T +``` + +Where: +* `SNAPSHOT_TAG` - name of snapshot you want to restore. + +Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example: +```bash +s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz ./ +``` + +To download this archive you can use AWS CLI tool `aws s3 cp`. + +This archive contains a single CQL file for each keyspace in the backup. +```bash +tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz +-rw------- 0/0 12671 2020-12-28 13:17 users.cql +-rw------- 0/0 2216 2020-12-28 13:17 system_auth.cql +-rw------- 0/0 921 2020-12-28 13:17 system_distributed.cql +-rw------- 0/0 12567 2020-12-28 13:17 system_schema.cql +-rw------- 0/0 4113 2020-12-28 13:17 system_traces.cql +``` + +Extract this archive and copy each schema file to one of the cluster Pods by: +```bash +kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla +``` + +To import schema simply execute: +```bash +kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql +``` + +Once the schema is recreated we can proceed to downloading data files. + +First let's save a list of snapshot files to file called `backup_files.out`: + +```bash +kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out +``` + +We will be using `sstableloader` to restore data. `sstableloader` needs a specific directory structure to work namely: `//` +To create this directory structure and download all the files execute these commands: +```bash +mkdir snapshot +cd snapshot +# Create temporary directory structure. +cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p +# Download snapshot files. +cat ../backup_files.out | xargs -n2 aws s3 cp +``` + +To load data into cluster pass cluster address to `sstableloader` together with path to data files and credentials: +```bash +sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password +``` + +Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host. diff --git a/v1.9/_sources/nodeoperations/scylla_upgrade.md.txt b/v1.9/_sources/nodeoperations/scylla_upgrade.md.txt new file mode 100644 index 00000000000..d39c9666c5e --- /dev/null +++ b/v1.9/_sources/nodeoperations/scylla_upgrade.md.txt @@ -0,0 +1,102 @@ +# Upgrading version of Scylla + +To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition. + +In this example cluster will be upgraded to version `4.4.5`. +```bash +kubectl -n scylla patch ScyllaCluster simple-cluster -p '{"spec":{"version": "4.4.5"}}' --type=merge +``` + +Operator supports two types of version upgrades: +1. Patch upgrade +1. Generic upgrade + + +**Patch upgrade** + +Patch upgrade is executed when only patch version change is detected according to [semantic versioning format](https://semver.org/). +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one. + +Example: `4.0.0 -> 4.0.1` + +**Generic upgrade** + +Generic upgrades are executed for the non patch version changes. + +Example: `4.0.0 -> 2020.1.0` or `4.0.0 -> 4.1.0` or even `4.0.0 -> nightly` + +User can observe current state of upgrade in ScyllaCluster status. +```bash +kubectl -n scylla describe ScyllaCluster simple-cluster +[...] +Status: + Racks: + us-east-1a: + Members: 3 + Ready Members: 3 + Version: 4.1.9 + Upgrade: + Current Node: simple-cluster-us-east-1-us-east-1a-2 + Current Rack: us-east-1a + Data Snapshot Tag: so_data_20201228135002UTC + From Version: 4.1.9 + State: validate_upgrade + System Snapshot Tag: so_system_20201228135002UTC + To Version: 4.2.2 +``` + +Each upgrade begins with taking a snapshot of `system` and `system_schema` keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under `System Snapshot Tag`. + +Before nodes in rack are upgraded, underlying StatefulSet is changed to use `OnDelete` UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed. + +When a node is being upgraded, [maintenance mode](#maintenance-mode) is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under `Data Snapshot Tag` and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node. + +Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version. + +Current state of upgrade can be traced using `Current Node`, `Current Rack` and `State` status fields. +* `Current Node` shows which node is being upgraded. +* `Current Rack` displays which rack is being upgraded. +* `State` contain information at which stage upgrade is. + +`State` can have following values: +* `begin_upgrade` - upgrade is starting +* `check_schema_agreement` - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried. +* `create_system_backup` - system keyspaces snapshot is being taken +* `find_next_rack` - Operator finds out which rack must be upgraded next, decision is saved in `Current Rack` +* `upgrade_image_in_pod_spec` - Image and UpgradeStrategy is upgraded in underlying StatefulSet +* `find_next_node` - Operator finds out which node must be upgraded next, decision is saved in `Current Node` +* `enable_maintenance_mode` - maintenance mode is being enabled +* `drain_node` - node is being drained +* `backup_data` - snapshot of data keyspaces is being taken +* `disable_maintenance_mode` - maintenance mode is being disabled +* `delete_pod` - Scylla Pod is being deleted +* `validate_upgrade` - Operator validates if new pod enters Ready state and if Scylla version is upgraded +* `clear_data_backup` - snapshot of data keyspaces is being removed +* `clear_system_backup` - snapshot of system keyspaces is being removed +* `restore_upgrade_strategy` - restore UpgradeStrategy in underlying StatefulSet +* `finish_upgrade` - upgrade cleanup + +**Recovering from upgrade failure** + +Upgrade may get stuck on `validate_upgrade` stage. This happens when Scylla Pod refuses to properly boot up. + +To continue with upgrade, first turn off operator by scaling Operator replicas to zero: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0 +``` +Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names. + +Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas: +```bash +kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2 +``` + +Operator should continue upgrade process from where it left off. diff --git a/v1.9/_sources/performance.md.txt b/v1.9/_sources/performance.md.txt new file mode 100644 index 00000000000..4b0bbd96781 --- /dev/null +++ b/v1.9/_sources/performance.md.txt @@ -0,0 +1,95 @@ +# Performance tuning + +Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes. + +## Node tuning + +Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning. + +Below example NodeConfig tunes nodes having `scylla.scylladb.com/node-type=scylla` label: +``` +apiVersion: scylla.scylladb.com/v1alpha1 +kind: NodeConfig +metadata: + name: cluster +spec: + placement: + nodeSelector: + scylla.scylladb.com/node-type: scylla +``` +For more details about new CRD use: +``` +kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1 +``` + +For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more. + +Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node. + +Scylla works most efficently when it's pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares. + +On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others. +We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively. + +Tuning resources are created in a special namespace called `scylla-operator-node-tuning`. + +The tuning is applied only to pods with `Guaranteed` QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions. + +## Kubernetes tuning + +By default, the kubelet uses the CFS quota to enforce pod CPU limits. +When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static. + +Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider. + +Only pods within the [Guaranteed QoS class](https://kubernetes.io/docs/tasks/configure-pod-container/quality-service-pod/#create-a-pod-that-gets-assigned-a-qos-class-of-guaranteed)) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won't be part of the shared pool. + +In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class: +* resource request and limits must be equal or only limits have to be provided +* agentResources must be provided and their requests and limits must be equal, or only limits have to be provided + +An example of such a ScyllaCluster that receives a Guaranteed QoS class is below: + +``` +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: guaranteed-cluster + namespace: scylla +spec: + version: 4.5.1 + agentVersion: 2.5.2 + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500Gi + agentResources: + requests: + cpu: 1 + memory: 1G + limits: + cpu: 1 + memory: 1G + resources: + requests: + cpu: 4 + memory: 16G + limits: + cpu: 4 + memory: 16G +``` \ No newline at end of file diff --git a/v1.9/_sources/releases.md.txt b/v1.9/_sources/releases.md.txt new file mode 100644 index 00000000000..05387dae5e1 --- /dev/null +++ b/v1.9/_sources/releases.md.txt @@ -0,0 +1,57 @@ +# Releases + +## Schedule +We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates. + +| Release | Code freeze | General availability | +|:-------:|:-----------:|:--------------------:| +| 1.9 | 2022-03-01 | 2021-03-08 | + +## Supported releases +We support the latest 2 releases of the operator to give everyone time to upgrade. + +| Release | General availability | Support ends | +|:-------:|:--------------------:|:---------------:| +| 1.8 | 2023-01-25 | Release of 1.10 | +| 1.7 | 2022-01-27 | Release of 1.9 | +| 1.6 | 2021-12-03 | 2023-01-25 | +| 1.5 | 2021-09-16 | 2022-01-27 | +| 1.4 | 2021-08-10 | 2021-12-03 | +| 1.3 | 2021-06-17 | 2021-09-16 | +| 1.2 | 2021-05-06 | 2021-08-10 | +| 1.1 | 2021-03-22 | 2021-06-17 | +| 1.0 | 2021-01-21 | 2021-05-06 | + +### Backport policy +Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers. + +## CI/CD +We use [GitHub actions](https://github.com/scylladb/scylla-operator/actions/workflows/go.yaml?query=branch%3Amaster+event%3Apush) for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite. + +### Automated promotions + +| Git reference | Type | Container image | +| :----------------: | :----: | :--------------------------------------------------: | +| **master** | branch | docker.io/scylladb/scylla-operator:**latest** | +| **vX.Y** | branch | docker.io/scylladb/scylla-operator:**X.Y** | +| **vX.Y.Z** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z** | +| **vX.Y.Z-alpha.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-alpha.N** | +| **vX.Y.Z-beta.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-beta.N** | +| **vX.Y.Z-rc.N** | tag | docker.io/scylladb/scylla-operator:**X.Y.Z-rc.N** | + +### Generally available +GA images aren't build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate. + +## Support matrix + +Support matrix table shows the version requirements for a particular **scylla-operator** version. Be sure to match these requirements, otherwise some functionality will not work. + +| | v1.9 | v1.8 | v1.7 | v1.6 | v1.5 | v1.4 | v1.3 | v1.2 | v1.1 | v1.0 | +|:-----------------:|:----------:|:----------:|:-----------------:|:--------------------:|:-----------:|:-----------:|:----------:|:----------:|:----------:|:----------:| +| Kubernetes | `>=1.21` | `>=1.21` | `>=1.20 && <1.25` | `>=1.19.10 && <1.25` | `>=1.19.10` | `>=1.19.10` | `>=1.19` | `>=1.19` | `>=1.11` | `>=1.11` | +| CRI API | `v1` | `v1alpha2` | `v1alpha2` | `v1alpha2` | | | | | | | +| Scylla OS | `>=5.0` | `>=5.0` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.3` | `>=4.2` | `>=4.2` | `>=4.0` | `>=4.0` | +| Scylla Enterprise | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2021.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | `>=2020.1` | +| Scylla Manager | `>=2.6` | `>=2.6` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | `>=2.2` | +| Scylla Monitoring | `>=4.0` | `>=4.0` | `>=3.0` | `>=3.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | `>=1.0` | diff --git a/v1.9/_sources/scylla_cluster_crd.md.txt b/v1.9/_sources/scylla_cluster_crd.md.txt new file mode 100644 index 00000000000..75d34f1a028 --- /dev/null +++ b/v1.9/_sources/scylla_cluster_crd.md.txt @@ -0,0 +1,188 @@ +# Scylla Cluster CRD + +Scylla database clusters can be created and configured using the `clusters.scylla.scylladb.com` custom resource definition (CRD). + +Please refer to the the [user guide walk-through](generic.md) for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD. + +## Sample + +```yaml +apiVersion: scylla.scylladb.com/v1 +kind: ScyllaCluster +metadata: + name: simple-cluster + namespace: scylla +spec: + version: 2.3.1 + repository: scylladb/scylla + developerMode: true + cpuset: false + automaticOrphanedNodeCleanup: true + repairs: + - name: "weekly us-east-1 repair" + intensity: "2" + interval: "7d" + dc: ["us-east-1"] + backups: + - name: "daily users backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "1d" + keyspace: ["users"] + - name: "weekly full cluster backup" + rateLimit: ["50"] + location: ["s3:cluster-backups"] + interval: "7d" + datacenter: + name: us-east-1 + racks: + - name: us-east-1a + members: 3 + storage: + capacity: 500G + storageClassName: local-raid-disks + resources: + requests: + cpu: 8 + memory: 32Gi + limits: + cpu: 8 + memory: 32Gi + placement: + nodeAffinity: + requiredDuringSchedulingIgnoredDuringExecution: + nodeSelectorTerms: + - matchExpressions: + - key: failure-domain.beta.kubernetes.io/region + operator: In + values: + - us-east-1 + - key: failure-domain.beta.kubernetes.io/zone + operator: In + values: + - us-east-1a + tolerations: + - key: role + operator: Equal + value: scylla-clusters + effect: NoSchedule +``` + +## Settings Explanation + +### Cluster Settings + +* `version`: The version of Scylla to use. It is used as the image tag to pull. +* `agentVersion`: The version of Scylla Manager Agent to use. It is used as the image tag to pull. +* `repository`: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `agentRepository`: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla). +* `developerMode`: Optional field. If it's true, then Scylla is started in [developer mode](https://www.scylladb.com/2016/09/13/test-dev-env/). This setting is for shared test/dev environments. +* `cpuset`: Optional field. If it's true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the [static cpu policy](https://kubernetes.io/blog/2018/07/24/feature-highlight-cpu-manager/) and only specify limits in resources. +* `automaticOrphanedNodeCleanup`: Optional field. Controls if automatic orphan node cleanup should be performed. +* `alternator`: Optional field. Defines Alternator configuration. + * `port`: Port on which to bind to Alternator API. + * `writeIsolation`: *required* Desired write isolation. +* `genericUpgrade`: Optional field. Defines GenericUpgrade configuration. + * `failureStrategy`: specifies which logic is executed when upgrade failure happens. Currently only `Retry` is supported. + * `pollInterval`: specifies how often upgrade logic polls on state updates. + Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect + overall time spent during upgrade. +* `datacenter`: Datacenter definition. +* `sysctls`: Optional field. Sysctl properties to be applied during initialization. +* `scyllaArgs`: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it. +* `network`: Optional field. Allows to customize network parameters. + * `hostNetworking`: controls if host networking should be enabled. + * `dnsPolicy`: controls Scylla Pod DNS Policy. See [details](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#pod-s-dns-policy). +* `repairs`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. +* `backups`: Optional field. Repair tasks definitions. See `Scylla Manager settings` for details. + + +In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups. + +### Scylla Manager settings + +Tasks are scheduled only when Scylla Manager is deployed in K8s cluster. + +Repairs: +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. Task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. The number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1", "!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `failFast` - Optional field. Stop repair on first error. +* `intensity` - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. + If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). + Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. + Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. + For Scylla clusters that **do not support row-level repair**, intensity can be a decimal between (0,1). + In that case it specifies percent of shards that can be repaired in parallel on a repair master node. + For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. + **Intensity is a number passed as string due to lack of support for float values in k8s controller runtime** +* `parallel` - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). + Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. + The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. + The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace", "!keyspace.table_prefix_*"]` +used to include or exclude keyspaces from repair. +* `smallTableThreshold` - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units `[B, MiB, GiB, TiB]` (default `"1GiB"`). + +Backups: + +* `name` - **required** - human readable name of the task. It must be unique across all tasks. +* `startDate` - Optional field. Specifies the task start date expressed in the RFC3339 format or `now[+duration]`, e.g. `now+3d2h10m`, +valid units are d, h, m, s (default "now"). +* `interval` - Optional field. task schedule interval e.g. `3d2h10m`, valid units are d, h, m, s (default "0"). +* `numRetries` - Optional field. the number of times a scheduled task will retry to run before failing (default 3). +* `dc` - Optional field. A list of datacenter glob patterns, e.g. `["dc1","!otherdc*"]` used to specify the DCs to include or exclude from backup. +* `keyspace` - Optional field. A list of keyspace/tables glob patterns, e.g. `["keyspace","!keyspace.table_prefix_*"]` used to include or exclude keyspaces from backup. +* `location` - Optional field. A list of backup locations in the format `[:]:` ex. `s3:my-bucket`. +The `:` part is optional and is only needed when different datacenters are being used to upload data to different locations. +`` Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are `s3` and `gcs`. +* `rateLimit` - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format `[:]`. +The `:` part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100). +* `retention` - Optional field. The number of backups which are to be stored (default 3). +* `snapshotParallel` - Optional field. A list of snapshot parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set, the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. +* `uploadParallel` - Optional field. A list of upload parallelism limits in the format `[:]`. +The `:` part is optional and allows for specifying different limits in selected datacenters. +If The `:` part is not set the limit is global (e.g. `["dc1:2,5"]`) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters. + + +### Datacenter Settings + +* `name`: Name of the datacenter. Usually, a datacenter corresponds to a region. +* `racks`: List of racks for the specific datacenter. + +### Rack Settings + +* `name`: Name of the rack. Usually, a rack corresponds to an availability zone. +* `members`: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don't call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node). +* `storage`: Defines the specs of the underlying storage. + * `capacity`: Capacity of the PersistentVolume to request. + * `storageClassName`: Optional field. [StorageClass](https://kubernetes.io/docs/concepts/storage/storage-classes/) of PersistentVolume to request. +* `resources`: Defines the CPU and RAM resources for the Scylla Pods. + * `requests`: The minimum amount of resources needed to run a Scylla container. + * `cpu`: CPU requests. + * `memory`: RAM requests. + * `limits`: The maximum amount of resources that can be used by a Scylla container. + * `cpu`: CPU limits. + * `memory`: RAM limits. +* `agentResources`: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See `resources` for details. +* `volumes`: Optional field. Defines volumes available in Scylla Pod. See [details](https://kubernetes.io/docs/concepts/storage/volumes/). +* `volumeMounts`: Optional field. Defines which volumes will be attached to Scylla container. +* `agentVolumeMounts`: Optional field. Defines which volumes will be attached to Agent container. +* `scyllaConfig`: Optional field. name of custom config map which will be merged with Scylla config. +* `scyllaAgentConfig`: Optional field. name of custom secret which will be merged with Scylla Manager Agent config. +* `placement`: Optional field. Defines the placement of Scylla Pods. Has the following subfields: + * [`nodeAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#node-affinity-beta-feature) + * [`podAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`podAntiAffinity`](https://kubernetes.io/docs/concepts/configuration/assign-pod-node/#inter-pod-affinity-and-anti-affinity-beta-feature) + * [`tolerations`](https://kubernetes.io/docs/concepts/configuration/taint-and-toleration) diff --git a/v1.9/_sources/upgrade.md.txt b/v1.9/_sources/upgrade.md.txt new file mode 100644 index 00000000000..ab14157256b --- /dev/null +++ b/v1.9/_sources/upgrade.md.txt @@ -0,0 +1,184 @@ +# Upgrade of Scylla Operator + +This page describes Scylla Operator upgrade procedures. +There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps. + +## Upgrade via Helm + +Helm doesn't support managing CustomResourceDefinition resources ([#5871](https://github.com/helm/helm/issues/5871), [#7735](https://github.com/helm/helm/issues/7735)) +These are only created on first install and never updated. In order to update them, users have to do it manually. + +Replace `` with the name of your Helm release for Scylla Operator and replace `` with the version number you want to install: +1. Make sure Helm chart repository is up-to-date: + ``` + helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable + helm repo update + ``` +2. Update CRD resources. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + tmpdir=$( mktemp -d ) \ + && helm pull scylla-operator/scylla-operator --version --untar --untardir "${tmpdir}" \ + && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \ + | xargs kubectl apply + ``` +3. Update Scylla Operator + ``` + helm upgrade --version scylla-operator/scylla-operator + ``` + +## Upgrade via kubectl + +Replace `` with the version number you want to install: + +1. Checkout source code of version you want to use: + ``` + git checkout + ``` +2. Manifests use rolling minor version tag, you may want to pin it to specific version: + ``` + find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:^g" + ``` +3. Update Scylla Operator. We recommend using `--server-side` flag for `kubectl apply`, if your version supports it. + ``` + kubectl apply -f deploy/operator + ``` + +--- + +## `v1.2.0` -> `v1.3.0` + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.3.0: + ``` + git checkout v1.3.0 + ``` +1. Update Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.1.0` -> `v1.2.0` + +1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones. + +Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure. + +1. Checkout source code of v1.2.0: + ``` + git checkout v1.2.0 + ``` +1. Remove old scylla operator namespace - in our case it's called `scylla-operator-system`: + ``` + kubectl delete namespace scylla-operator-system --wait=true + ``` +1. Remove old webhooks: + ``` + kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration + kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration + ``` +1. Install Scylla Operator from deploy directory: + ``` + kubectl -n scylla-operator apply -f deploy/operator + ``` +1. Wait until Scylla Operator is up and running: + ``` + kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com + kubectl -n scylla-operator rollout status deployment.apps/scylla-operator + ``` + +## `v1.0.0` -> `v1.1.0` + +During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected. + +1. Get name of StatefulSet managing Scylla Operator + ```shell + kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager" + + NAME READY AGE + scylla-operator-controller-manager 1/1 95m + ``` + +1. Change probes and used container image by applying following patch: + ```yaml + spec: + template: + spec: + containers: + - name: manager + image: docker.io/scylladb/scylla-operator:1.1.0 + livenessProbe: + httpGet: + path: /healthz + port: 8080 + scheme: HTTP + readinessProbe: + $retainKeys: + - httpGet + httpGet: + path: /readyz + port: 8080 + scheme: HTTP + ``` + To apply above patch save it to file (`operator-patch.yaml` for example) and apply to Operator StatefulSet: + ```shell + kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)" + ``` + + +## `v0.3.0` -> `v1.0.0` + +***Note:*** There's an experimental migration procedure available [here](migration.md). + +`v0.3.0` used a very common name as a CRD kind (`Cluster`). In `v1.0.0` this issue was solved by using less common +kind which is easier to disambiguate. (`ScyllaCluster`). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide. + +1. Get list of existing Scylla clusters + ``` + kubectl -n scylla get cluster.scylla.scylladb.com + + NAME AGE + simple-cluster 30m + ``` +1. Delete each one of them + + ``` + kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster + ``` +1. Make sure you're on `v0.3.0` branch + ``` + git checkout v0.3.0 + ``` +1. Delete existing CRD and Operator + ``` + kubectl delete -f examples/generic/operator.yaml + ``` +1. Checkout `v1.0.0` version + ``` + git checkout v1.0.0 + ``` +1. Install new CRD and Scylla Operator + ``` + kubectl apply -f examples/common/operator.yaml + ``` +1. Migrate your existing Scylla Cluster definition. Change `apiVersion` and `kind` from: + ``` + apiVersion: scylla.scylladb.com/v1alpha1 + kind: Cluster + ``` + to: + ``` + apiVersion: scylla.scylladb.com/v1 + kind: ScyllaCluster + ``` +1. Once your cluster definition is ready, use `kubectl apply` to install fresh Scylla cluster. diff --git a/v1.9/_static/basic.css b/v1.9/_static/basic.css new file mode 100644 index 00000000000..bf18350b65c --- /dev/null +++ b/v1.9/_static/basic.css @@ -0,0 +1,906 @@ +/* + * basic.css + * ~~~~~~~~~ + * + * Sphinx stylesheet -- basic theme. + * + * :copyright: Copyright 2007-2022 by the Sphinx team, see AUTHORS. + * :license: BSD, see LICENSE for details. + * + */ + +/* -- main layout ----------------------------------------------------------- */ + +div.clearer { + clear: both; +} + +div.section::after { + display: block; + content: ''; + clear: left; +} + +/* -- relbar ---------------------------------------------------------------- */ + +div.related { + width: 100%; + font-size: 90%; +} + +div.related h3 { + display: none; +} + +div.related ul { + margin: 0; + padding: 0 0 0 10px; + list-style: none; +} + +div.related li { + display: inline; +} + +div.related li.right { + float: right; 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+ margin-bottom: 10px; + margin-left: 30px; +} + +dl > dd:last-child, +dl > dd:last-child > :last-child { + margin-bottom: 0; +} + +dt:target, span.highlighted { + background-color: #fbe54e; +} + +rect.highlighted { + fill: #fbe54e; +} + +dl.glossary dt { + font-weight: bold; + font-size: 1.1em; +} + +.versionmodified { + font-style: italic; +} + +.system-message { + background-color: #fda; + padding: 5px; + border: 3px solid red; +} + +.footnote:target { + background-color: #ffa; +} + +.line-block { + display: block; + margin-top: 1em; + margin-bottom: 1em; +} + +.line-block .line-block { + margin-top: 0; + margin-bottom: 0; + margin-left: 1.5em; +} + +.guilabel, .menuselection { + font-family: sans-serif; +} + +.accelerator { + text-decoration: underline; +} + +.classifier { + font-style: oblique; +} + +.classifier:before { + font-style: normal; + margin: 0 0.5em; + content: ":"; + display: inline-block; +} + +abbr, acronym { + border-bottom: dotted 1px; + cursor: help; +} + +/* -- code displays --------------------------------------------------------- */ + +pre { + overflow: auto; + overflow-y: hidden; /* fixes display issues on Chrome browsers */ +} + +pre, div[class*="highlight-"] { + clear: both; +} + +span.pre { + -moz-hyphens: none; + -ms-hyphens: none; + -webkit-hyphens: none; + hyphens: none; + white-space: nowrap; +} + +div[class*="highlight-"] { + margin: 1em 0; +} + +td.linenos pre { + border: 0; + background-color: transparent; + color: #aaa; +} + +table.highlighttable { + display: block; +} + +table.highlighttable tbody { + display: block; +} + +table.highlighttable tr { + display: flex; +} + +table.highlighttable td { + margin: 0; + padding: 0; +} + +table.highlighttable td.linenos { + padding-right: 0.5em; +} + +table.highlighttable td.code { + flex: 1; + overflow: hidden; +} + +.highlight .hll { + display: block; +} + +div.highlight pre, +table.highlighttable pre { + margin: 0; +} + +div.code-block-caption + div { + margin-top: 0; +} + +div.code-block-caption { + margin-top: 1em; + padding: 2px 5px; + font-size: small; +} + +div.code-block-caption code { + background-color: transparent; +} + +table.highlighttable td.linenos, +span.linenos, +div.highlight span.gp { /* gp: Generic.Prompt */ + user-select: none; + -webkit-user-select: text; /* Safari fallback only */ + -webkit-user-select: none; /* Chrome/Safari */ + -moz-user-select: none; /* Firefox */ + -ms-user-select: none; /* IE10+ */ +} + +div.code-block-caption span.caption-number { + padding: 0.1em 0.3em; + font-style: italic; +} + +div.code-block-caption span.caption-text { +} + +div.literal-block-wrapper { + margin: 1em 0; +} + +code.xref, a code { + background-color: transparent; + font-weight: bold; +} + +h1 code, h2 code, h3 code, h4 code, h5 code, h6 code { + background-color: transparent; +} + +.viewcode-link { + float: right; +} + +.viewcode-back { + float: right; + font-family: sans-serif; +} + +div.viewcode-block:target { + margin: -1px -10px; + padding: 0 10px; +} + +/* -- math display ---------------------------------------------------------- */ + +img.math { + vertical-align: middle; +} + +div.body div.math p { + text-align: center; +} + +span.eqno { + float: right; +} + +span.eqno a.headerlink { + position: absolute; + z-index: 1; +} + +div.math:hover a.headerlink { + visibility: visible; +} + +/* -- printout stylesheet --------------------------------------------------- */ + +@media print { + div.document, + div.documentwrapper, + div.bodywrapper { + margin: 0 !important; + width: 100%; + } + + div.sphinxsidebar, + div.related, + div.footer, + #top-link { + display: none; + } +} \ No newline at end of file diff --git a/v1.9/_static/check-solid.svg b/v1.9/_static/check-solid.svg new file mode 100644 index 00000000000..92fad4b5c0b --- /dev/null +++ b/v1.9/_static/check-solid.svg @@ -0,0 +1,4 @@ + + + + diff --git a/v1.9/_static/clipboard.min.js b/v1.9/_static/clipboard.min.js new file mode 100644 index 00000000000..54b3c463811 --- /dev/null +++ b/v1.9/_static/clipboard.min.js @@ -0,0 +1,7 @@ +/*! + * clipboard.js v2.0.8 + * https://clipboardjs.com/ + * + * Licensed MIT © Zeno Rocha + */ +!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.ClipboardJS=e():t.ClipboardJS=e()}(this,function(){return n={686:function(t,e,n){"use strict";n.d(e,{default:function(){return o}});var e=n(279),i=n.n(e),e=n(370),u=n.n(e),e=n(817),c=n.n(e);function a(t){try{return document.execCommand(t)}catch(t){return}}var f=function(t){t=c()(t);return a("cut"),t};var l=function(t){var e,n,o,r=1 + + + + diff --git a/v1.9/_static/copybutton.css b/v1.9/_static/copybutton.css new file mode 100644 index 00000000000..f1916ec7d1b --- /dev/null +++ b/v1.9/_static/copybutton.css @@ -0,0 +1,94 @@ +/* Copy buttons */ +button.copybtn { + position: absolute; + display: flex; + top: .3em; + right: .3em; + width: 1.7em; + height: 1.7em; + opacity: 0; + transition: opacity 0.3s, border .3s, background-color .3s; + user-select: none; + padding: 0; + border: none; + outline: none; + border-radius: 0.4em; + /* The colors that GitHub uses */ + border: #1b1f2426 1px solid; + background-color: #f6f8fa; + color: #57606a; +} + +button.copybtn.success { + border-color: #22863a; + color: #22863a; +} + +button.copybtn svg { + stroke: currentColor; + width: 1.5em; + height: 1.5em; + padding: 0.1em; +} + +div.highlight { + position: relative; +} + +/* Show the copybutton */ +.highlight:hover button.copybtn, button.copybtn.success { + opacity: 1; +} + +.highlight button.copybtn:hover { + background-color: rgb(235, 235, 235); +} + +.highlight button.copybtn:active { + background-color: rgb(187, 187, 187); +} + +/** + * A minimal CSS-only tooltip copied from: + * https://codepen.io/mildrenben/pen/rVBrpK + * + * To use, write HTML like the following: + * + *

Short

+ */ + .o-tooltip--left { + position: relative; + } + + .o-tooltip--left:after { + opacity: 0; + visibility: hidden; + position: absolute; + content: attr(data-tooltip); + padding: .2em; + font-size: .8em; + left: -.2em; + background: grey; + color: white; + white-space: nowrap; + z-index: 2; + border-radius: 2px; + transform: translateX(-102%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); +} + +.o-tooltip--left:hover:after { + display: block; + opacity: 1; + visibility: visible; + transform: translateX(-100%) translateY(0); + transition: opacity 0.2s cubic-bezier(0.64, 0.09, 0.08, 1), transform 0.2s cubic-bezier(0.64, 0.09, 0.08, 1); + transition-delay: .5s; +} + +/* By default the copy button shouldn't show up when printing a page */ +@media print { + button.copybtn { + display: none; + } +} diff --git a/v1.9/_static/copybutton.js b/v1.9/_static/copybutton.js new file mode 100644 index 00000000000..2ea7ff3e217 --- /dev/null +++ b/v1.9/_static/copybutton.js @@ -0,0 +1,248 @@ +// Localization support +const messages = { + 'en': { + 'copy': 'Copy', + 'copy_to_clipboard': 'Copy to clipboard', + 'copy_success': 'Copied!', + 'copy_failure': 'Failed to copy', + }, + 'es' : { + 'copy': 'Copiar', + 'copy_to_clipboard': 'Copiar al portapapeles', + 'copy_success': '¡Copiado!', + 'copy_failure': 'Error al copiar', + }, + 'de' : { + 'copy': 'Kopieren', + 'copy_to_clipboard': 'In die Zwischenablage kopieren', + 'copy_success': 'Kopiert!', + 'copy_failure': 'Fehler beim Kopieren', + }, + 'fr' : { + 'copy': 'Copier', + 'copy_to_clipboard': 'Copier dans le presse-papier', + 'copy_success': 'Copié !', + 'copy_failure': 'Échec de la copie', + }, + 'ru': { + 'copy': 'Скопировать', + 'copy_to_clipboard': 'Скопировать в буфер', + 'copy_success': 'Скопировано!', + 'copy_failure': 'Не удалось скопировать', + }, + 'zh-CN': { + 'copy': '复制', + 'copy_to_clipboard': '复制到剪贴板', + 'copy_success': '复制成功!', + 'copy_failure': '复制失败', + }, + 'it' : { + 'copy': 'Copiare', + 'copy_to_clipboard': 'Copiato negli appunti', + 'copy_success': 'Copiato!', + 'copy_failure': 'Errore durante la copia', + } +} + +let locale = 'en' +if( document.documentElement.lang !== undefined + && messages[document.documentElement.lang] !== undefined ) { + locale = document.documentElement.lang +} + +let doc_url_root = DOCUMENTATION_OPTIONS.URL_ROOT; +if (doc_url_root == '#') { + doc_url_root = ''; +} + +/** + * SVG files for our copy buttons + */ +let iconCheck = ` + ${messages[locale]['copy_success']} + + +` + +// If the user specified their own SVG use that, otherwise use the default +let iconCopy = ``; +if (!iconCopy) { + iconCopy = ` + ${messages[locale]['copy_to_clipboard']} + + + +` +} + +/** + * Set up copy/paste for code blocks + */ + +const runWhenDOMLoaded = cb => { + if (document.readyState != 'loading') { + cb() + } else if (document.addEventListener) { + document.addEventListener('DOMContentLoaded', cb) + } else { + document.attachEvent('onreadystatechange', function() { + if (document.readyState == 'complete') cb() + }) + } +} + +const codeCellId = index => `codecell${index}` + +// Clears selected text since ClipboardJS will select the text when copying +const clearSelection = () => { + if (window.getSelection) { + window.getSelection().removeAllRanges() + } else if (document.selection) { + document.selection.empty() + } +} + +// Changes tooltip text for a moment, then changes it back +// We want the timeout of our `success` class to be a bit shorter than the +// tooltip and icon change, so that we can hide the icon before changing back. +var timeoutIcon = 2000; +var timeoutSuccessClass = 1500; + +const temporarilyChangeTooltip = (el, oldText, newText) => { + el.setAttribute('data-tooltip', newText) + el.classList.add('success') + // Remove success a little bit sooner than we change the tooltip + // So that we can use CSS to hide the copybutton first + setTimeout(() => el.classList.remove('success'), timeoutSuccessClass) + setTimeout(() => el.setAttribute('data-tooltip', oldText), timeoutIcon) +} + +// Changes the copy button icon for two seconds, then changes it back +const temporarilyChangeIcon = (el) => { + el.innerHTML = iconCheck; + setTimeout(() => {el.innerHTML = iconCopy}, timeoutIcon) +} + +const addCopyButtonToCodeCells = () => { + // If ClipboardJS hasn't loaded, wait a bit and try again. This + // happens because we load ClipboardJS asynchronously. + if (window.ClipboardJS === undefined) { + setTimeout(addCopyButtonToCodeCells, 250) + return + } + + // Add copybuttons to all of our code cells + const COPYBUTTON_SELECTOR = 'div.highlight pre'; + const codeCells = document.querySelectorAll(COPYBUTTON_SELECTOR) + codeCells.forEach((codeCell, index) => { + const id = codeCellId(index) + codeCell.setAttribute('id', id) + + const clipboardButton = id => + `` + codeCell.insertAdjacentHTML('afterend', clipboardButton(id)) + }) + +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} + + +var copyTargetText = (trigger) => { + var target = document.querySelector(trigger.attributes['data-clipboard-target'].value); + + // get filtered text + let exclude = '.linenos'; + + let text = filterText(target, exclude); + return formatCopyText(text, '', false, true, true, true, '', '') +} + + // Initialize with a callback so we can modify the text before copy + const clipboard = new ClipboardJS('.copybtn', {text: copyTargetText}) + + // Update UI with error/success messages + clipboard.on('success', event => { + clearSelection() + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_success']) + temporarilyChangeIcon(event.trigger) + }) + + clipboard.on('error', event => { + temporarilyChangeTooltip(event.trigger, messages[locale]['copy'], messages[locale]['copy_failure']) + }) +} + +runWhenDOMLoaded(addCopyButtonToCodeCells) \ No newline at end of file diff --git a/v1.9/_static/copybutton_funcs.js b/v1.9/_static/copybutton_funcs.js new file mode 100644 index 00000000000..dbe1aaad79c --- /dev/null +++ b/v1.9/_static/copybutton_funcs.js @@ -0,0 +1,73 @@ +function escapeRegExp(string) { + return string.replace(/[.*+?^${}()|[\]\\]/g, '\\$&'); // $& means the whole matched string +} + +/** + * Removes excluded text from a Node. + * + * @param {Node} target Node to filter. + * @param {string} exclude CSS selector of nodes to exclude. + * @returns {DOMString} Text from `target` with text removed. + */ +export function filterText(target, exclude) { + const clone = target.cloneNode(true); // clone as to not modify the live DOM + if (exclude) { + // remove excluded nodes + clone.querySelectorAll(exclude).forEach(node => node.remove()); + } + return clone.innerText; +} + +// Callback when a copy button is clicked. Will be passed the node that was clicked +// should then grab the text and replace pieces of text that shouldn't be used in output +export function formatCopyText(textContent, copybuttonPromptText, isRegexp = false, onlyCopyPromptLines = true, removePrompts = true, copyEmptyLines = true, lineContinuationChar = "", hereDocDelim = "") { + var regexp; + var match; + + // Do we check for line continuation characters and "HERE-documents"? + var useLineCont = !!lineContinuationChar + var useHereDoc = !!hereDocDelim + + // create regexp to capture prompt and remaining line + if (isRegexp) { + regexp = new RegExp('^(' + copybuttonPromptText + ')(.*)') + } else { + regexp = new RegExp('^(' + escapeRegExp(copybuttonPromptText) + ')(.*)') + } + + const outputLines = []; + var promptFound = false; + var gotLineCont = false; + var gotHereDoc = false; + const lineGotPrompt = []; + for (const line of textContent.split('\n')) { + match = line.match(regexp) + if (match || gotLineCont || gotHereDoc) { + promptFound = regexp.test(line) + lineGotPrompt.push(promptFound) + if (removePrompts && promptFound) { + outputLines.push(match[2]) + } else { + outputLines.push(line) + } + gotLineCont = line.endsWith(lineContinuationChar) & useLineCont + if (line.includes(hereDocDelim) & useHereDoc) + gotHereDoc = !gotHereDoc + } else if (!onlyCopyPromptLines) { + outputLines.push(line) + } else if (copyEmptyLines && line.trim() === '') { + outputLines.push(line) + } + } + + // If no lines with the prompt were found then just use original lines + if (lineGotPrompt.some(v => v === true)) { + textContent = outputLines.join('\n'); + } + + // Remove a trailing newline to avoid auto-running when pasting + if (textContent.endsWith("\n")) { + textContent = textContent.slice(0, -1) + } + return textContent +} diff --git a/v1.9/_static/css/main.css b/v1.9/_static/css/main.css new file mode 100644 index 00000000000..4ac01745289 --- /dev/null +++ b/v1.9/_static/css/main.css @@ -0,0 +1 @@ +@media print,screen 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details. + * + */ + +/** + * select a different prefix for underscore + */ +$u = _.noConflict(); + +/** + * make the code below compatible with browsers without + * an installed firebug like debugger +if (!window.console || !console.firebug) { + var names = ["log", "debug", "info", "warn", "error", "assert", "dir", + "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", + "profile", "profileEnd"]; + window.console = {}; + for (var i = 0; i < names.length; ++i) + window.console[names[i]] = function() {}; +} + */ + +/** + * small helper function to urldecode strings + * + * See https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/decodeURIComponent#Decoding_query_parameters_from_a_URL + */ +jQuery.urldecode = function(x) { + if (!x) { + return x + } + return decodeURIComponent(x.replace(/\+/g, ' ')); +}; + +/** + * small helper function to urlencode strings + */ +jQuery.urlencode = encodeURIComponent; + +/** + * This function returns the parsed url parameters of the + * current request. Multiple values per key are supported, + * it will always return arrays of strings for the value parts. + */ +jQuery.getQueryParameters = function(s) { + if (typeof s === 'undefined') + s = document.location.search; + var parts = s.substr(s.indexOf('?') + 1).split('&'); + var result = {}; + for (var i = 0; i < parts.length; i++) { + var tmp = parts[i].split('=', 2); + var key = jQuery.urldecode(tmp[0]); + var value = jQuery.urldecode(tmp[1]); + if (key in result) + result[key].push(value); + else + result[key] = [value]; + } + return result; +}; + +/** + * highlight a given string on a jquery object by wrapping it in + * span elements with the given class name. + */ +jQuery.fn.highlightText = function(text, className) { + function highlight(node, addItems) { + if (node.nodeType === 3) { + var val = node.nodeValue; + var pos = val.toLowerCase().indexOf(text); + if (pos >= 0 && + !jQuery(node.parentNode).hasClass(className) && + !jQuery(node.parentNode).hasClass("nohighlight")) { + var span; + var isInSVG = jQuery(node).closest("body, svg, foreignObject").is("svg"); + if (isInSVG) { + span = document.createElementNS("http://www.w3.org/2000/svg", "tspan"); + } else { + span = document.createElement("span"); + span.className = className; + } + span.appendChild(document.createTextNode(val.substr(pos, text.length))); + node.parentNode.insertBefore(span, node.parentNode.insertBefore( + document.createTextNode(val.substr(pos + text.length)), + node.nextSibling)); + node.nodeValue = val.substr(0, pos); + if (isInSVG) { + var rect = document.createElementNS("http://www.w3.org/2000/svg", "rect"); + var bbox = node.parentElement.getBBox(); + rect.x.baseVal.value = bbox.x; + rect.y.baseVal.value = bbox.y; + rect.width.baseVal.value = bbox.width; + rect.height.baseVal.value = bbox.height; + rect.setAttribute('class', className); + addItems.push({ + "parent": node.parentNode, + "target": rect}); + } + } + } + else if (!jQuery(node).is("button, select, textarea")) { + jQuery.each(node.childNodes, function() { + highlight(this, addItems); + }); + } + } + var addItems = []; + var result = this.each(function() { + highlight(this, addItems); + }); + for (var i = 0; i < addItems.length; ++i) { + jQuery(addItems[i].parent).before(addItems[i].target); + } + return result; +}; + +/* + * backward compatibility for jQuery.browser + * This will be supported until firefox bug is fixed. + */ +if (!jQuery.browser) { + jQuery.uaMatch = function(ua) { + ua = ua.toLowerCase(); + + var match = /(chrome)[ \/]([\w.]+)/.exec(ua) || + /(webkit)[ \/]([\w.]+)/.exec(ua) || + /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(ua) || + /(msie) ([\w.]+)/.exec(ua) || + ua.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(ua) || + []; + + return { + browser: match[ 1 ] || "", + version: match[ 2 ] || "0" + }; + }; + jQuery.browser = {}; + jQuery.browser[jQuery.uaMatch(navigator.userAgent).browser] = true; +} + +/** + * Small JavaScript module for the documentation. + */ +var Documentation = { + + init : function() { + this.fixFirefoxAnchorBug(); + this.highlightSearchWords(); + this.initIndexTable(); + this.initOnKeyListeners(); + }, + + /** + * i18n support + */ + TRANSLATIONS : {}, + PLURAL_EXPR : function(n) { return n === 1 ? 0 : 1; }, + LOCALE : 'unknown', + + // gettext and ngettext don't access this so that the functions + // can safely bound to a different name (_ = Documentation.gettext) + gettext : function(string) { + var translated = Documentation.TRANSLATIONS[string]; + if (typeof translated === 'undefined') + return string; + return (typeof translated === 'string') ? translated : translated[0]; + }, + + ngettext : function(singular, plural, n) { + var translated = Documentation.TRANSLATIONS[singular]; + if (typeof translated === 'undefined') + return (n == 1) ? singular : plural; + return translated[Documentation.PLURALEXPR(n)]; + }, + + addTranslations : function(catalog) { + for (var key in catalog.messages) + this.TRANSLATIONS[key] = catalog.messages[key]; + this.PLURAL_EXPR = new Function('n', 'return +(' + catalog.plural_expr + ')'); + this.LOCALE = catalog.locale; + }, + + /** + * add context elements like header anchor links + */ + addContextElements : function() { + $('div[id] > :header:first').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this headline')). + appendTo(this); + }); + $('dt[id]').each(function() { + $('\u00B6'). + attr('href', '#' + this.id). + attr('title', _('Permalink to this definition')). + appendTo(this); + }); + }, + + /** + * workaround a firefox stupidity + * see: https://bugzilla.mozilla.org/show_bug.cgi?id=645075 + */ + fixFirefoxAnchorBug : function() { + if (document.location.hash && $.browser.mozilla) + window.setTimeout(function() { + document.location.href += ''; + }, 10); + }, + + /** + * highlight the search words provided in the url in the text + */ + highlightSearchWords : function() { + var params = $.getQueryParameters(); + var terms = (params.highlight) ? params.highlight[0].split(/\s+/) : []; + if (terms.length) { + var body = $('div.body'); + if (!body.length) { + body = $('body'); + } + window.setTimeout(function() { + $.each(terms, function() { + body.highlightText(this.toLowerCase(), 'highlighted'); + }); + }, 10); + $('') + .appendTo($('#searchbox')); + } + }, + + /** + * init the domain index toggle buttons + */ + initIndexTable : function() { + var togglers = $('img.toggler').click(function() { + var src = $(this).attr('src'); + var idnum = $(this).attr('id').substr(7); + $('tr.cg-' + idnum).toggle(); + if (src.substr(-9) === 'minus.png') + $(this).attr('src', src.substr(0, src.length-9) + 'plus.png'); + else + $(this).attr('src', src.substr(0, src.length-8) + 'minus.png'); + }).css('display', ''); + if (DOCUMENTATION_OPTIONS.COLLAPSE_INDEX) { + togglers.click(); + } + }, + + /** + * helper function to hide the search marks again + */ + hideSearchWords : function() { + $('#searchbox .highlight-link').fadeOut(300); + $('span.highlighted').removeClass('highlighted'); + var url = new URL(window.location); + url.searchParams.delete('highlight'); + window.history.replaceState({}, '', url); + }, + + /** + * helper function to focus on search bar + */ + focusSearchBar : function() { + $('input[name=q]').first().focus(); + }, + + /** + * make the url absolute + */ + makeURL : function(relativeURL) { + return DOCUMENTATION_OPTIONS.URL_ROOT + '/' + relativeURL; + }, + + /** + * get the current relative url + */ + getCurrentURL : function() { + var path = document.location.pathname; + var parts = path.split(/\//); + $.each(DOCUMENTATION_OPTIONS.URL_ROOT.split(/\//), function() { + if (this === '..') + parts.pop(); + }); + var url = parts.join('/'); + return path.substring(url.lastIndexOf('/') + 1, path.length - 1); + }, + + initOnKeyListeners: function() { + // only install a listener if it is really needed + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS && + !DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + return; + + $(document).keydown(function(event) { + var activeElementType = document.activeElement.tagName; + // don't navigate when in search box, textarea, dropdown or button + if (activeElementType !== 'TEXTAREA' && activeElementType !== 'INPUT' && activeElementType !== 'SELECT' + && activeElementType !== 'BUTTON') { + if (event.altKey || event.ctrlKey || event.metaKey) + return; + + if (!event.shiftKey) { + switch (event.key) { + case 'ArrowLeft': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var prevHref = $('link[rel="prev"]').prop('href'); + if (prevHref) { + window.location.href = prevHref; + return false; + } + break; + case 'ArrowRight': + if (!DOCUMENTATION_OPTIONS.NAVIGATION_WITH_KEYS) + break; + var nextHref = $('link[rel="next"]').prop('href'); + if (nextHref) { + window.location.href = nextHref; + return false; + } + break; + case 'Escape': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.hideSearchWords(); + return false; + } + } + + // some keyboard layouts may need Shift to get / + switch (event.key) { + case '/': + if (!DOCUMENTATION_OPTIONS.ENABLE_SEARCH_SHORTCUTS) + break; + Documentation.focusSearchBar(); + return false; + } + } + }); + } +}; + +// quick alias for translations +_ = Documentation.gettext; + +$(document).ready(function() { + Documentation.init(); +}); diff --git a/v1.9/_static/documentation_options.js b/v1.9/_static/documentation_options.js new file mode 100644 index 00000000000..724e3825774 --- /dev/null +++ b/v1.9/_static/documentation_options.js @@ -0,0 +1,14 @@ +var DOCUMENTATION_OPTIONS = { + URL_ROOT: document.getElementById("documentation_options").getAttribute('data-url_root'), + VERSION: '', + LANGUAGE: 'None', + COLLAPSE_INDEX: false, + BUILDER: 'html', + FILE_SUFFIX: '.html', + LINK_SUFFIX: '.html', + HAS_SOURCE: true, + SOURCELINK_SUFFIX: '.txt', + NAVIGATION_WITH_KEYS: false, + SHOW_SEARCH_SUMMARY: true, + 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Foundation and other contributors + * Released under the MIT license + * https://jquery.org/license + * + * Date: 2020-05-04T22:49Z + */ +( function( global, factory ) { + + "use strict"; + + if ( typeof module === "object" && typeof module.exports === "object" ) { + + // For CommonJS and CommonJS-like environments where a proper `window` + // is present, execute the factory and get jQuery. + // For environments that do not have a `window` with a `document` + // (such as Node.js), expose a factory as module.exports. + // This accentuates the need for the creation of a real `window`. + // e.g. var jQuery = require("jquery")(window); + // See ticket #14549 for more info. + module.exports = global.document ? + factory( global, true ) : + function( w ) { + if ( !w.document ) { + throw new Error( "jQuery requires a window with a document" ); + } + return factory( w ); + }; + } else { + factory( global ); + } + +// Pass this if window is not defined yet +} )( typeof window !== "undefined" ? window : this, function( window, noGlobal ) { + +// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1 +// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode +// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common +// enough that all such attempts are guarded in a try block. +"use strict"; + +var arr = []; + +var getProto = Object.getPrototypeOf; + +var slice = arr.slice; + +var flat = arr.flat ? function( array ) { + return arr.flat.call( array ); +} : function( array ) { + return arr.concat.apply( [], array ); +}; + + +var push = arr.push; + +var indexOf = arr.indexOf; + +var class2type = {}; + +var toString = class2type.toString; + +var hasOwn = class2type.hasOwnProperty; + +var fnToString = hasOwn.toString; + +var ObjectFunctionString = fnToString.call( Object ); + +var support = {}; + +var isFunction = function isFunction( obj ) { + + // Support: Chrome <=57, Firefox <=52 + // In some browsers, typeof returns "function" for HTML elements + // (i.e., `typeof document.createElement( "object" ) === "function"`). + // We don't want to classify *any* DOM node as a function. + return typeof obj === "function" && typeof obj.nodeType !== "number"; + }; + + +var isWindow = function isWindow( obj ) { + return obj != null && obj === obj.window; + }; + + +var document = window.document; + + + + var preservedScriptAttributes = { + type: true, + src: true, + nonce: true, + noModule: true + }; + + function DOMEval( code, node, doc ) { + doc = doc || document; + + var i, val, + script = doc.createElement( "script" ); + + script.text = code; + if ( node ) { + for ( i in preservedScriptAttributes ) { + + // Support: Firefox 64+, Edge 18+ + // Some browsers don't support the "nonce" property on scripts. + // On the other hand, just using `getAttribute` is not enough as + // the `nonce` attribute is reset to an empty string whenever it + // becomes browsing-context connected. + // See https://github.com/whatwg/html/issues/2369 + // See https://html.spec.whatwg.org/#nonce-attributes + // The `node.getAttribute` check was added for the sake of + // `jQuery.globalEval` so that it can fake a nonce-containing node + // via an object. + val = node[ i ] || node.getAttribute && node.getAttribute( i ); + if ( val ) { + script.setAttribute( i, val ); + } + } + } + doc.head.appendChild( script ).parentNode.removeChild( script ); + } + + +function toType( obj ) { + if ( obj == null ) { + return obj + ""; + } + + // Support: Android <=2.3 only (functionish RegExp) + return typeof obj === "object" || typeof obj === "function" ? + class2type[ toString.call( obj ) ] || "object" : + typeof obj; +} +/* global Symbol */ +// Defining this global in .eslintrc.json would create a danger of using the global +// unguarded in another place, it seems safer to define global only for this module + + + +var + version = "3.5.1", + + // Define a local copy of jQuery + jQuery = function( selector, context ) { + + // The jQuery object is actually just the init constructor 'enhanced' + // Need init if jQuery is called (just allow error to be thrown if not included) + return new jQuery.fn.init( selector, context ); + }; + +jQuery.fn = jQuery.prototype = { + + // The current version of jQuery being used + jquery: version, + + constructor: jQuery, + + // The default length of a jQuery object is 0 + length: 0, + + toArray: function() { + return slice.call( this ); + }, + + // Get the Nth element in the matched element set OR + // Get the whole matched element set as a clean array + get: function( num ) { + + // Return all the elements in a clean array + if ( num == null ) { + return slice.call( this ); + } + + // Return just the one element from the set + return num < 0 ? this[ num + this.length ] : this[ num ]; + }, + + // Take an array of elements and push it onto the stack + // (returning the new matched element set) + pushStack: function( elems ) { + + // Build a new jQuery matched element set + var ret = jQuery.merge( this.constructor(), elems ); + + // Add the old object onto the stack (as a reference) + ret.prevObject = this; + + // Return the newly-formed element set + return ret; + }, + + // Execute a callback for every element in the matched set. + each: function( callback ) { + return jQuery.each( this, callback ); + }, + + map: function( callback ) { + return this.pushStack( jQuery.map( this, function( elem, i ) { + return callback.call( elem, i, elem ); + } ) ); + }, + + slice: function() { + return this.pushStack( slice.apply( this, arguments ) ); + }, + + first: function() { + return this.eq( 0 ); + }, + + last: function() { + return this.eq( -1 ); + }, + + even: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return ( i + 1 ) % 2; + } ) ); + }, + + odd: function() { + return this.pushStack( jQuery.grep( this, function( _elem, i ) { + return i % 2; + } ) ); + }, + + eq: function( i ) { + var len = this.length, + j = +i + ( i < 0 ? len : 0 ); + return this.pushStack( j >= 0 && j < len ? [ this[ j ] ] : [] ); + }, + + end: function() { + return this.prevObject || this.constructor(); + }, + + // For internal use only. + // Behaves like an Array's method, not like a jQuery method. + push: push, + sort: arr.sort, + splice: arr.splice +}; + +jQuery.extend = jQuery.fn.extend = function() { + var options, name, src, copy, copyIsArray, clone, + target = arguments[ 0 ] || {}, + i = 1, + length = arguments.length, + deep = false; + + // Handle a deep copy situation + if ( typeof target === "boolean" ) { + deep = target; + + // Skip the boolean and the target + target = arguments[ i ] || {}; + i++; + } + + // Handle case when target is a string or something (possible in deep copy) + if ( typeof target !== "object" && !isFunction( target ) ) { + target = {}; + } + + // Extend jQuery itself if only one argument is passed + if ( i === length ) { + target = this; + i--; + } + + for ( ; i < length; i++ ) { + + // Only deal with non-null/undefined values + if ( ( options = arguments[ i ] ) != null ) { + + // Extend the base object + for ( name in options ) { + copy = options[ name ]; + + // Prevent Object.prototype pollution + // Prevent never-ending loop + if ( name === "__proto__" || target === copy ) { + continue; + } + + // Recurse if we're merging plain objects or arrays + if ( deep && copy && ( jQuery.isPlainObject( copy ) || + ( copyIsArray = Array.isArray( copy ) ) ) ) { + src = target[ name ]; + + // Ensure proper type for the source value + if ( copyIsArray && !Array.isArray( src ) ) { + clone = []; + } else if ( !copyIsArray && !jQuery.isPlainObject( src ) ) { + clone = {}; + } else { + clone = src; + } + copyIsArray = false; + + // Never move original objects, clone them + target[ name ] = jQuery.extend( deep, clone, copy ); + + // Don't bring in undefined values + } else if ( copy !== undefined ) { + target[ name ] = copy; + } + } + } + } + + // Return the modified object + return target; +}; + +jQuery.extend( { + + // Unique for each copy of jQuery on the page + expando: "jQuery" + ( version + Math.random() ).replace( /\D/g, "" ), + + // Assume jQuery is ready without the ready module + isReady: true, + + error: function( msg ) { + throw new Error( msg ); + }, + + noop: function() {}, + + isPlainObject: function( obj ) { + var proto, Ctor; + + // Detect obvious negatives + // Use toString instead of jQuery.type to catch host objects + if ( !obj || toString.call( obj ) !== "[object Object]" ) { + return false; + } + + proto = getProto( obj ); + + // Objects with no prototype (e.g., `Object.create( null )`) are plain + if ( !proto ) { + return true; + } + + // Objects with prototype are plain iff they were constructed by a global Object function + Ctor = hasOwn.call( proto, "constructor" ) && proto.constructor; + return typeof Ctor === "function" && fnToString.call( Ctor ) === ObjectFunctionString; + }, + + isEmptyObject: function( obj ) { + var name; + + for ( name in obj ) { + return false; + } + return true; + }, + + // Evaluates a script in a provided context; falls back to the global one + // if not specified. + globalEval: function( code, options, doc ) { + DOMEval( code, { nonce: options && options.nonce }, doc ); + }, + + each: function( obj, callback ) { + var length, i = 0; + + if ( isArrayLike( obj ) ) { + length = obj.length; + for ( ; i < length; i++ ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } else { + for ( i in obj ) { + if ( callback.call( obj[ i ], i, obj[ i ] ) === false ) { + break; + } + } + } + + return obj; + }, + + // results is for internal usage only + makeArray: function( arr, results ) { + var ret = results || []; + + if ( arr != null ) { + if ( isArrayLike( Object( arr ) ) ) { + jQuery.merge( ret, + typeof arr === "string" ? + [ arr ] : arr + ); + } else { + push.call( ret, arr ); + } + } + + return ret; + }, + + inArray: function( elem, arr, i ) { + return arr == null ? -1 : indexOf.call( arr, elem, i ); + }, + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + merge: function( first, second ) { + var len = +second.length, + j = 0, + i = first.length; + + for ( ; j < len; j++ ) { + first[ i++ ] = second[ j ]; + } + + first.length = i; + + return first; + }, + + grep: function( elems, callback, invert ) { + var callbackInverse, + matches = [], + i = 0, + length = elems.length, + callbackExpect = !invert; + + // Go through the array, only saving the items + // that pass the validator function + for ( ; i < length; i++ ) { + callbackInverse = !callback( elems[ i ], i ); + if ( callbackInverse !== callbackExpect ) { + matches.push( elems[ i ] ); + } + } + + return matches; + }, + + // arg is for internal usage only + map: function( elems, callback, arg ) { + var length, value, + i = 0, + ret = []; + + // Go through the array, translating each of the items to their new values + if ( isArrayLike( elems ) ) { + length = elems.length; + for ( ; i < length; i++ ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + + // Go through every key on the object, + } else { + for ( i in elems ) { + value = callback( elems[ i ], i, arg ); + + if ( value != null ) { + ret.push( value ); + } + } + } + + // Flatten any nested arrays + return flat( ret ); + }, + + // A global GUID counter for objects + guid: 1, + + // jQuery.support is not used in Core but other projects attach their + // properties to it so it needs to exist. + support: support +} ); + +if ( typeof Symbol === "function" ) { + jQuery.fn[ Symbol.iterator ] = arr[ Symbol.iterator ]; +} + +// Populate the class2type map +jQuery.each( "Boolean Number String Function Array Date RegExp Object Error Symbol".split( " " ), +function( _i, name ) { + class2type[ "[object " + name + "]" ] = name.toLowerCase(); +} ); + +function isArrayLike( obj ) { + + // Support: real iOS 8.2 only (not reproducible in simulator) + // `in` check used to prevent JIT error (gh-2145) + // hasOwn isn't used here due to false negatives + // regarding Nodelist length in IE + var length = !!obj && "length" in obj && obj.length, + type = toType( obj ); + + if ( isFunction( obj ) || isWindow( obj ) ) { + return false; + } + + return type === "array" || length === 0 || + typeof length === "number" && length > 0 && ( length - 1 ) in obj; +} +var Sizzle = +/*! + * Sizzle CSS Selector Engine v2.3.5 + * https://sizzlejs.com/ + * + * Copyright JS Foundation and other contributors + * Released under the MIT license + * https://js.foundation/ + * + * Date: 2020-03-14 + */ +( function( window ) { +var i, + support, + Expr, + getText, + isXML, + tokenize, + compile, + select, + outermostContext, + sortInput, + hasDuplicate, + + // Local document vars + setDocument, + document, + docElem, + documentIsHTML, + rbuggyQSA, + rbuggyMatches, + matches, + contains, + + // Instance-specific data + expando = "sizzle" + 1 * new Date(), + preferredDoc = window.document, + dirruns = 0, + done = 0, + classCache = createCache(), + tokenCache = createCache(), + compilerCache = createCache(), + nonnativeSelectorCache = createCache(), + sortOrder = function( a, b ) { + if ( a === b ) { + hasDuplicate = true; + } + return 0; + }, + + // Instance methods + hasOwn = ( {} ).hasOwnProperty, + arr = [], + pop = arr.pop, + pushNative = arr.push, + push = arr.push, + slice = arr.slice, + + // Use a stripped-down indexOf as it's faster than native + // https://jsperf.com/thor-indexof-vs-for/5 + indexOf = function( list, elem ) { + var i = 0, + len = list.length; + for ( ; i < len; i++ ) { + if ( list[ i ] === elem ) { + return i; + } + } + return -1; + }, + + booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|" + + "ismap|loop|multiple|open|readonly|required|scoped", + + // Regular expressions + + // http://www.w3.org/TR/css3-selectors/#whitespace + whitespace = "[\\x20\\t\\r\\n\\f]", + + // https://www.w3.org/TR/css-syntax-3/#ident-token-diagram + identifier = "(?:\\\\[\\da-fA-F]{1,6}" + whitespace + + "?|\\\\[^\\r\\n\\f]|[\\w-]|[^\0-\\x7f])+", + + // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors + attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace + + + // Operator (capture 2) + "*([*^$|!~]?=)" + whitespace + + + // "Attribute values must be CSS identifiers [capture 5] + // or strings [capture 3 or capture 4]" + "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + + whitespace + "*\\]", + + pseudos = ":(" + identifier + ")(?:\\((" + + + // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments: + // 1. quoted (capture 3; capture 4 or capture 5) + "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" + + + // 2. simple (capture 6) + "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" + + + // 3. anything else (capture 2) + ".*" + + ")\\)|)", + + // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter + rwhitespace = new RegExp( whitespace + "+", "g" ), + rtrim = new RegExp( "^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + + whitespace + "+$", "g" ), + + rcomma = new RegExp( "^" + whitespace + "*," + whitespace + "*" ), + rcombinators = new RegExp( "^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + + "*" ), + rdescend = new RegExp( whitespace + "|>" ), + + rpseudo = new RegExp( pseudos ), + ridentifier = new RegExp( "^" + identifier + "$" ), + + matchExpr = { + "ID": new RegExp( "^#(" + identifier + ")" ), + "CLASS": new RegExp( "^\\.(" + identifier + ")" ), + "TAG": new RegExp( "^(" + identifier + "|[*])" ), + "ATTR": new RegExp( "^" + attributes ), + "PSEUDO": new RegExp( "^" + pseudos ), + "CHILD": new RegExp( "^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + + whitespace + "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + + whitespace + "*(\\d+)|))" + whitespace + "*\\)|)", "i" ), + "bool": new RegExp( "^(?:" + booleans + ")$", "i" ), + + // For use in libraries implementing .is() + // We use this for POS matching in `select` + "needsContext": new RegExp( "^" + whitespace + + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" + whitespace + + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i" ) + }, + + rhtml = /HTML$/i, + rinputs = /^(?:input|select|textarea|button)$/i, + rheader = /^h\d$/i, + + rnative = /^[^{]+\{\s*\[native \w/, + + // Easily-parseable/retrievable ID or TAG or CLASS selectors + rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/, + + rsibling = /[+~]/, + + // CSS escapes + // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters + runescape = new RegExp( "\\\\[\\da-fA-F]{1,6}" + whitespace + "?|\\\\([^\\r\\n\\f])", "g" ), + funescape = function( escape, nonHex ) { + var high = "0x" + escape.slice( 1 ) - 0x10000; + + return nonHex ? + + // Strip the backslash prefix from a non-hex escape sequence + nonHex : + + // Replace a hexadecimal escape sequence with the encoded Unicode code point + // Support: IE <=11+ + // For values outside the Basic Multilingual Plane (BMP), manually construct a + // surrogate pair + high < 0 ? + String.fromCharCode( high + 0x10000 ) : + String.fromCharCode( high >> 10 | 0xD800, high & 0x3FF | 0xDC00 ); + }, + + // CSS string/identifier serialization + // https://drafts.csswg.org/cssom/#common-serializing-idioms + rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g, + fcssescape = function( ch, asCodePoint ) { + if ( asCodePoint ) { + + // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER + if ( ch === "\0" ) { + return "\uFFFD"; + } + + // Control characters and (dependent upon position) numbers get escaped as code points + return ch.slice( 0, -1 ) + "\\" + + ch.charCodeAt( ch.length - 1 ).toString( 16 ) + " "; + } + + // Other potentially-special ASCII characters get backslash-escaped + return "\\" + ch; + }, + + // Used for iframes + // See setDocument() + // Removing the function wrapper causes a "Permission Denied" + // error in IE + unloadHandler = function() { + setDocument(); + }, + + inDisabledFieldset = addCombinator( + function( elem ) { + return elem.disabled === true && elem.nodeName.toLowerCase() === "fieldset"; + }, + { dir: "parentNode", next: "legend" } + ); + +// Optimize for push.apply( _, NodeList ) +try { + push.apply( + ( arr = slice.call( preferredDoc.childNodes ) ), + preferredDoc.childNodes + ); + + // Support: Android<4.0 + // Detect silently failing push.apply + // eslint-disable-next-line no-unused-expressions + arr[ preferredDoc.childNodes.length ].nodeType; +} catch ( e ) { + push = { apply: arr.length ? + + // Leverage slice if possible + function( target, els ) { + pushNative.apply( target, slice.call( els ) ); + } : + + // Support: IE<9 + // Otherwise append directly + function( target, els ) { + var j = target.length, + i = 0; + + // Can't trust NodeList.length + while ( ( target[ j++ ] = els[ i++ ] ) ) {} + target.length = j - 1; + } + }; +} + +function Sizzle( selector, context, results, seed ) { + var m, i, elem, nid, match, groups, newSelector, + newContext = context && context.ownerDocument, + + // nodeType defaults to 9, since context defaults to document + nodeType = context ? context.nodeType : 9; + + results = results || []; + + // Return early from calls with invalid selector or context + if ( typeof selector !== "string" || !selector || + nodeType !== 1 && nodeType !== 9 && nodeType !== 11 ) { + + return results; + } + + // Try to shortcut find operations (as opposed to filters) in HTML documents + if ( !seed ) { + setDocument( context ); + context = context || document; + + if ( documentIsHTML ) { + + // If the selector is sufficiently simple, try using a "get*By*" DOM method + // (excepting DocumentFragment context, where the methods don't exist) + if ( nodeType !== 11 && ( match = rquickExpr.exec( selector ) ) ) { + + // ID selector + if ( ( m = match[ 1 ] ) ) { + + // Document context + if ( nodeType === 9 ) { + if ( ( elem = context.getElementById( m ) ) ) { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( elem.id === m ) { + results.push( elem ); + return results; + } + } else { + return results; + } + + // Element context + } else { + + // Support: IE, Opera, Webkit + // TODO: identify versions + // getElementById can match elements by name instead of ID + if ( newContext && ( elem = newContext.getElementById( m ) ) && + contains( context, elem ) && + elem.id === m ) { + + results.push( elem ); + return results; + } + } + + // Type selector + } else if ( match[ 2 ] ) { + push.apply( results, context.getElementsByTagName( selector ) ); + return results; + + // Class selector + } else if ( ( m = match[ 3 ] ) && support.getElementsByClassName && + context.getElementsByClassName ) { + + push.apply( results, context.getElementsByClassName( m ) ); + return results; + } + } + + // Take advantage of querySelectorAll + if ( support.qsa && + !nonnativeSelectorCache[ selector + " " ] && + ( !rbuggyQSA || !rbuggyQSA.test( selector ) ) && + + // Support: IE 8 only + // Exclude object elements + ( nodeType !== 1 || context.nodeName.toLowerCase() !== "object" ) ) { + + newSelector = selector; + newContext = context; + + // qSA considers elements outside a scoping root when evaluating child or + // descendant combinators, which is not what we want. + // In such cases, we work around the behavior by prefixing every selector in the + // list with an ID selector referencing the scope context. + // The technique has to be used as well when a leading combinator is used + // as such selectors are not recognized by querySelectorAll. + // Thanks to Andrew Dupont for this technique. + if ( nodeType === 1 && + ( rdescend.test( selector ) || rcombinators.test( selector ) ) ) { + + // Expand context for sibling selectors + newContext = rsibling.test( selector ) && testContext( context.parentNode ) || + context; + + // We can use :scope instead of the ID hack if the browser + // supports it & if we're not changing the context. + if ( newContext !== context || !support.scope ) { + + // Capture the context ID, setting it first if necessary + if ( ( nid = context.getAttribute( "id" ) ) ) { + nid = nid.replace( rcssescape, fcssescape ); + } else { + context.setAttribute( "id", ( nid = expando ) ); + } + } + + // Prefix every selector in the list + groups = tokenize( selector ); + i = groups.length; + while ( i-- ) { + groups[ i ] = ( nid ? "#" + nid : ":scope" ) + " " + + toSelector( groups[ i ] ); + } + newSelector = groups.join( "," ); + } + + try { + push.apply( results, + newContext.querySelectorAll( newSelector ) + ); + return results; + } catch ( qsaError ) { + nonnativeSelectorCache( selector, true ); + } finally { + if ( nid === expando ) { + context.removeAttribute( "id" ); + } + } + } + } + } + + // All others + return select( selector.replace( rtrim, "$1" ), context, results, seed ); +} + +/** + * Create key-value caches of limited size + * @returns {function(string, object)} Returns the Object data after storing it on itself with + * property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength) + * deleting the oldest entry + */ +function createCache() { + var keys = []; + + function cache( key, value ) { + + // Use (key + " ") to avoid collision with native prototype properties (see Issue #157) + if ( keys.push( key + " " ) > Expr.cacheLength ) { + + // Only keep the most recent entries + delete cache[ keys.shift() ]; + } + return ( cache[ key + " " ] = value ); + } + return cache; +} + +/** + * Mark a function for special use by Sizzle + * @param {Function} fn The function to mark + */ +function markFunction( fn ) { + fn[ expando ] = true; + return fn; +} + +/** + * Support testing using an element + * @param {Function} fn Passed the created element and returns a boolean result + */ +function assert( fn ) { + var el = document.createElement( "fieldset" ); + + try { + return !!fn( el ); + } catch ( e ) { + return false; + } finally { + + // Remove from its parent by default + if ( el.parentNode ) { + el.parentNode.removeChild( el ); + } + + // release memory in IE + el = null; + } +} + +/** + * Adds the same handler for all of the specified attrs + * @param {String} attrs Pipe-separated list of attributes + * @param {Function} handler The method that will be applied + */ +function addHandle( attrs, handler ) { + var arr = attrs.split( "|" ), + i = arr.length; + + while ( i-- ) { + Expr.attrHandle[ arr[ i ] ] = handler; + } +} + +/** + * Checks document order of two siblings + * @param {Element} a + * @param {Element} b + * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b + */ +function siblingCheck( a, b ) { + var cur = b && a, + diff = cur && a.nodeType === 1 && b.nodeType === 1 && + a.sourceIndex - b.sourceIndex; + + // Use IE sourceIndex if available on both nodes + if ( diff ) { + return diff; + } + + // Check if b follows a + if ( cur ) { + while ( ( cur = cur.nextSibling ) ) { + if ( cur === b ) { + return -1; + } + } + } + + return a ? 1 : -1; +} + +/** + * Returns a function to use in pseudos for input types + * @param {String} type + */ +function createInputPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for buttons + * @param {String} type + */ +function createButtonPseudo( type ) { + return function( elem ) { + var name = elem.nodeName.toLowerCase(); + return ( name === "input" || name === "button" ) && elem.type === type; + }; +} + +/** + * Returns a function to use in pseudos for :enabled/:disabled + * @param {Boolean} disabled true for :disabled; false for :enabled + */ +function createDisabledPseudo( disabled ) { + + // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable + return function( elem ) { + + // Only certain elements can match :enabled or :disabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled + // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled + if ( "form" in elem ) { + + // Check for inherited disabledness on relevant non-disabled elements: + // * listed form-associated elements in a disabled fieldset + // https://html.spec.whatwg.org/multipage/forms.html#category-listed + // https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled + // * option elements in a disabled optgroup + // https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled + // All such elements have a "form" property. + if ( elem.parentNode && elem.disabled === false ) { + + // Option elements defer to a parent optgroup if present + if ( "label" in elem ) { + if ( "label" in elem.parentNode ) { + return elem.parentNode.disabled === disabled; + } else { + return elem.disabled === disabled; + } + } + + // Support: IE 6 - 11 + // Use the isDisabled shortcut property to check for disabled fieldset ancestors + return elem.isDisabled === disabled || + + // Where there is no isDisabled, check manually + /* jshint -W018 */ + elem.isDisabled !== !disabled && + inDisabledFieldset( elem ) === disabled; + } + + return elem.disabled === disabled; + + // Try to winnow out elements that can't be disabled before trusting the disabled property. + // Some victims get caught in our net (label, legend, menu, track), but it shouldn't + // even exist on them, let alone have a boolean value. + } else if ( "label" in elem ) { + return elem.disabled === disabled; + } + + // Remaining elements are neither :enabled nor :disabled + return false; + }; +} + +/** + * Returns a function to use in pseudos for positionals + * @param {Function} fn + */ +function createPositionalPseudo( fn ) { + return markFunction( function( argument ) { + argument = +argument; + return markFunction( function( seed, matches ) { + var j, + matchIndexes = fn( [], seed.length, argument ), + i = matchIndexes.length; + + // Match elements found at the specified indexes + while ( i-- ) { + if ( seed[ ( j = matchIndexes[ i ] ) ] ) { + seed[ j ] = !( matches[ j ] = seed[ j ] ); + } + } + } ); + } ); +} + +/** + * Checks a node for validity as a Sizzle context + * @param {Element|Object=} context + * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value + */ +function testContext( context ) { + return context && typeof context.getElementsByTagName !== "undefined" && context; +} + +// Expose support vars for convenience +support = Sizzle.support = {}; + +/** + * Detects XML nodes + * @param {Element|Object} elem An element or a document + * @returns {Boolean} True iff elem is a non-HTML XML node + */ +isXML = Sizzle.isXML = function( elem ) { + var namespace = elem.namespaceURI, + docElem = ( elem.ownerDocument || elem ).documentElement; + + // Support: IE <=8 + // Assume HTML when documentElement doesn't yet exist, such as inside loading iframes + // https://bugs.jquery.com/ticket/4833 + return !rhtml.test( namespace || docElem && docElem.nodeName || "HTML" ); +}; + +/** + * Sets document-related variables once based on the current document + * @param {Element|Object} [doc] An element or document object to use to set the document + * @returns {Object} Returns the current document + */ +setDocument = Sizzle.setDocument = function( node ) { + var hasCompare, subWindow, + doc = node ? node.ownerDocument || node : preferredDoc; + + // Return early if doc is invalid or already selected + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( doc == document || doc.nodeType !== 9 || !doc.documentElement ) { + return document; + } + + // Update global variables + document = doc; + docElem = document.documentElement; + documentIsHTML = !isXML( document ); + + // Support: IE 9 - 11+, Edge 12 - 18+ + // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936) + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( preferredDoc != document && + ( subWindow = document.defaultView ) && subWindow.top !== subWindow ) { + + // Support: IE 11, Edge + if ( subWindow.addEventListener ) { + subWindow.addEventListener( "unload", unloadHandler, false ); + + // Support: IE 9 - 10 only + } else if ( subWindow.attachEvent ) { + subWindow.attachEvent( "onunload", unloadHandler ); + } + } + + // Support: IE 8 - 11+, Edge 12 - 18+, Chrome <=16 - 25 only, Firefox <=3.6 - 31 only, + // Safari 4 - 5 only, Opera <=11.6 - 12.x only + // IE/Edge & older browsers don't support the :scope pseudo-class. + // Support: Safari 6.0 only + // Safari 6.0 supports :scope but it's an alias of :root there. + support.scope = assert( function( el ) { + docElem.appendChild( el ).appendChild( document.createElement( "div" ) ); + return typeof el.querySelectorAll !== "undefined" && + !el.querySelectorAll( ":scope fieldset div" ).length; + } ); + + /* Attributes + ---------------------------------------------------------------------- */ + + // Support: IE<8 + // Verify that getAttribute really returns attributes and not properties + // (excepting IE8 booleans) + support.attributes = assert( function( el ) { + el.className = "i"; + return !el.getAttribute( "className" ); + } ); + + /* getElement(s)By* + ---------------------------------------------------------------------- */ + + // Check if getElementsByTagName("*") returns only elements + support.getElementsByTagName = assert( function( el ) { + el.appendChild( document.createComment( "" ) ); + return !el.getElementsByTagName( "*" ).length; + } ); + + // Support: IE<9 + support.getElementsByClassName = rnative.test( document.getElementsByClassName ); + + // Support: IE<10 + // Check if getElementById returns elements by name + // The broken getElementById methods don't pick up programmatically-set names, + // so use a roundabout getElementsByName test + support.getById = assert( function( el ) { + docElem.appendChild( el ).id = expando; + return !document.getElementsByName || !document.getElementsByName( expando ).length; + } ); + + // ID filter and find + if ( support.getById ) { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + return elem.getAttribute( "id" ) === attrId; + }; + }; + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var elem = context.getElementById( id ); + return elem ? [ elem ] : []; + } + }; + } else { + Expr.filter[ "ID" ] = function( id ) { + var attrId = id.replace( runescape, funescape ); + return function( elem ) { + var node = typeof elem.getAttributeNode !== "undefined" && + elem.getAttributeNode( "id" ); + return node && node.value === attrId; + }; + }; + + // Support: IE 6 - 7 only + // getElementById is not reliable as a find shortcut + Expr.find[ "ID" ] = function( id, context ) { + if ( typeof context.getElementById !== "undefined" && documentIsHTML ) { + var node, i, elems, + elem = context.getElementById( id ); + + if ( elem ) { + + // Verify the id attribute + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + + // Fall back on getElementsByName + elems = context.getElementsByName( id ); + i = 0; + while ( ( elem = elems[ i++ ] ) ) { + node = elem.getAttributeNode( "id" ); + if ( node && node.value === id ) { + return [ elem ]; + } + } + } + + return []; + } + }; + } + + // Tag + Expr.find[ "TAG" ] = support.getElementsByTagName ? + function( tag, context ) { + if ( typeof context.getElementsByTagName !== "undefined" ) { + return context.getElementsByTagName( tag ); + + // DocumentFragment nodes don't have gEBTN + } else if ( support.qsa ) { + return context.querySelectorAll( tag ); + } + } : + + function( tag, context ) { + var elem, + tmp = [], + i = 0, + + // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too + results = context.getElementsByTagName( tag ); + + // Filter out possible comments + if ( tag === "*" ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem.nodeType === 1 ) { + tmp.push( elem ); + } + } + + return tmp; + } + return results; + }; + + // Class + Expr.find[ "CLASS" ] = support.getElementsByClassName && function( className, context ) { + if ( typeof context.getElementsByClassName !== "undefined" && documentIsHTML ) { + return context.getElementsByClassName( className ); + } + }; + + /* QSA/matchesSelector + ---------------------------------------------------------------------- */ + + // QSA and matchesSelector support + + // matchesSelector(:active) reports false when true (IE9/Opera 11.5) + rbuggyMatches = []; + + // qSa(:focus) reports false when true (Chrome 21) + // We allow this because of a bug in IE8/9 that throws an error + // whenever `document.activeElement` is accessed on an iframe + // So, we allow :focus to pass through QSA all the time to avoid the IE error + // See https://bugs.jquery.com/ticket/13378 + rbuggyQSA = []; + + if ( ( support.qsa = rnative.test( document.querySelectorAll ) ) ) { + + // Build QSA regex + // Regex strategy adopted from Diego Perini + assert( function( el ) { + + var input; + + // Select is set to empty string on purpose + // This is to test IE's treatment of not explicitly + // setting a boolean content attribute, + // since its presence should be enough + // https://bugs.jquery.com/ticket/12359 + docElem.appendChild( el ).innerHTML = "" + + ""; + + // Support: IE8, Opera 11-12.16 + // Nothing should be selected when empty strings follow ^= or $= or *= + // The test attribute must be unknown in Opera but "safe" for WinRT + // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section + if ( el.querySelectorAll( "[msallowcapture^='']" ).length ) { + rbuggyQSA.push( "[*^$]=" + whitespace + "*(?:''|\"\")" ); + } + + // Support: IE8 + // Boolean attributes and "value" are not treated correctly + if ( !el.querySelectorAll( "[selected]" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*(?:value|" + booleans + ")" ); + } + + // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+ + if ( !el.querySelectorAll( "[id~=" + expando + "-]" ).length ) { + rbuggyQSA.push( "~=" ); + } + + // Support: IE 11+, Edge 15 - 18+ + // IE 11/Edge don't find elements on a `[name='']` query in some cases. + // Adding a temporary attribute to the document before the selection works + // around the issue. + // Interestingly, IE 10 & older don't seem to have the issue. + input = document.createElement( "input" ); + input.setAttribute( "name", "" ); + el.appendChild( input ); + if ( !el.querySelectorAll( "[name='']" ).length ) { + rbuggyQSA.push( "\\[" + whitespace + "*name" + whitespace + "*=" + + whitespace + "*(?:''|\"\")" ); + } + + // Webkit/Opera - :checked should return selected option elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + // IE8 throws error here and will not see later tests + if ( !el.querySelectorAll( ":checked" ).length ) { + rbuggyQSA.push( ":checked" ); + } + + // Support: Safari 8+, iOS 8+ + // https://bugs.webkit.org/show_bug.cgi?id=136851 + // In-page `selector#id sibling-combinator selector` fails + if ( !el.querySelectorAll( "a#" + expando + "+*" ).length ) { + rbuggyQSA.push( ".#.+[+~]" ); + } + + // Support: Firefox <=3.6 - 5 only + // Old Firefox doesn't throw on a badly-escaped identifier. + el.querySelectorAll( "\\\f" ); + rbuggyQSA.push( "[\\r\\n\\f]" ); + } ); + + assert( function( el ) { + el.innerHTML = "" + + ""; + + // Support: Windows 8 Native Apps + // The type and name attributes are restricted during .innerHTML assignment + var input = document.createElement( "input" ); + input.setAttribute( "type", "hidden" ); + el.appendChild( input ).setAttribute( "name", "D" ); + + // Support: IE8 + // Enforce case-sensitivity of name attribute + if ( el.querySelectorAll( "[name=d]" ).length ) { + rbuggyQSA.push( "name" + whitespace + "*[*^$|!~]?=" ); + } + + // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled) + // IE8 throws error here and will not see later tests + if ( el.querySelectorAll( ":enabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: IE9-11+ + // IE's :disabled selector does not pick up the children of disabled fieldsets + docElem.appendChild( el ).disabled = true; + if ( el.querySelectorAll( ":disabled" ).length !== 2 ) { + rbuggyQSA.push( ":enabled", ":disabled" ); + } + + // Support: Opera 10 - 11 only + // Opera 10-11 does not throw on post-comma invalid pseudos + el.querySelectorAll( "*,:x" ); + rbuggyQSA.push( ",.*:" ); + } ); + } + + if ( ( support.matchesSelector = rnative.test( ( matches = docElem.matches || + docElem.webkitMatchesSelector || + docElem.mozMatchesSelector || + docElem.oMatchesSelector || + docElem.msMatchesSelector ) ) ) ) { + + assert( function( el ) { + + // Check to see if it's possible to do matchesSelector + // on a disconnected node (IE 9) + support.disconnectedMatch = matches.call( el, "*" ); + + // This should fail with an exception + // Gecko does not error, returns false instead + matches.call( el, "[s!='']:x" ); + rbuggyMatches.push( "!=", pseudos ); + } ); + } + + rbuggyQSA = rbuggyQSA.length && new RegExp( rbuggyQSA.join( "|" ) ); + rbuggyMatches = rbuggyMatches.length && new RegExp( rbuggyMatches.join( "|" ) ); + + /* Contains + ---------------------------------------------------------------------- */ + hasCompare = rnative.test( docElem.compareDocumentPosition ); + + // Element contains another + // Purposefully self-exclusive + // As in, an element does not contain itself + contains = hasCompare || rnative.test( docElem.contains ) ? + function( a, b ) { + var adown = a.nodeType === 9 ? a.documentElement : a, + bup = b && b.parentNode; + return a === bup || !!( bup && bup.nodeType === 1 && ( + adown.contains ? + adown.contains( bup ) : + a.compareDocumentPosition && a.compareDocumentPosition( bup ) & 16 + ) ); + } : + function( a, b ) { + if ( b ) { + while ( ( b = b.parentNode ) ) { + if ( b === a ) { + return true; + } + } + } + return false; + }; + + /* Sorting + ---------------------------------------------------------------------- */ + + // Document order sorting + sortOrder = hasCompare ? + function( a, b ) { + + // Flag for duplicate removal + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + // Sort on method existence if only one input has compareDocumentPosition + var compare = !a.compareDocumentPosition - !b.compareDocumentPosition; + if ( compare ) { + return compare; + } + + // Calculate position if both inputs belong to the same document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + compare = ( a.ownerDocument || a ) == ( b.ownerDocument || b ) ? + a.compareDocumentPosition( b ) : + + // Otherwise we know they are disconnected + 1; + + // Disconnected nodes + if ( compare & 1 || + ( !support.sortDetached && b.compareDocumentPosition( a ) === compare ) ) { + + // Choose the first element that is related to our preferred document + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( a == document || a.ownerDocument == preferredDoc && + contains( preferredDoc, a ) ) { + return -1; + } + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( b == document || b.ownerDocument == preferredDoc && + contains( preferredDoc, b ) ) { + return 1; + } + + // Maintain original order + return sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + } + + return compare & 4 ? -1 : 1; + } : + function( a, b ) { + + // Exit early if the nodes are identical + if ( a === b ) { + hasDuplicate = true; + return 0; + } + + var cur, + i = 0, + aup = a.parentNode, + bup = b.parentNode, + ap = [ a ], + bp = [ b ]; + + // Parentless nodes are either documents or disconnected + if ( !aup || !bup ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + return a == document ? -1 : + b == document ? 1 : + /* eslint-enable eqeqeq */ + aup ? -1 : + bup ? 1 : + sortInput ? + ( indexOf( sortInput, a ) - indexOf( sortInput, b ) ) : + 0; + + // If the nodes are siblings, we can do a quick check + } else if ( aup === bup ) { + return siblingCheck( a, b ); + } + + // Otherwise we need full lists of their ancestors for comparison + cur = a; + while ( ( cur = cur.parentNode ) ) { + ap.unshift( cur ); + } + cur = b; + while ( ( cur = cur.parentNode ) ) { + bp.unshift( cur ); + } + + // Walk down the tree looking for a discrepancy + while ( ap[ i ] === bp[ i ] ) { + i++; + } + + return i ? + + // Do a sibling check if the nodes have a common ancestor + siblingCheck( ap[ i ], bp[ i ] ) : + + // Otherwise nodes in our document sort first + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + /* eslint-disable eqeqeq */ + ap[ i ] == preferredDoc ? -1 : + bp[ i ] == preferredDoc ? 1 : + /* eslint-enable eqeqeq */ + 0; + }; + + return document; +}; + +Sizzle.matches = function( expr, elements ) { + return Sizzle( expr, null, null, elements ); +}; + +Sizzle.matchesSelector = function( elem, expr ) { + setDocument( elem ); + + if ( support.matchesSelector && documentIsHTML && + !nonnativeSelectorCache[ expr + " " ] && + ( !rbuggyMatches || !rbuggyMatches.test( expr ) ) && + ( !rbuggyQSA || !rbuggyQSA.test( expr ) ) ) { + + try { + var ret = matches.call( elem, expr ); + + // IE 9's matchesSelector returns false on disconnected nodes + if ( ret || support.disconnectedMatch || + + // As well, disconnected nodes are said to be in a document + // fragment in IE 9 + elem.document && elem.document.nodeType !== 11 ) { + return ret; + } + } catch ( e ) { + nonnativeSelectorCache( expr, true ); + } + } + + return Sizzle( expr, document, null, [ elem ] ).length > 0; +}; + +Sizzle.contains = function( context, elem ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( context.ownerDocument || context ) != document ) { + setDocument( context ); + } + return contains( context, elem ); +}; + +Sizzle.attr = function( elem, name ) { + + // Set document vars if needed + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( ( elem.ownerDocument || elem ) != document ) { + setDocument( elem ); + } + + var fn = Expr.attrHandle[ name.toLowerCase() ], + + // Don't get fooled by Object.prototype properties (jQuery #13807) + val = fn && hasOwn.call( Expr.attrHandle, name.toLowerCase() ) ? + fn( elem, name, !documentIsHTML ) : + undefined; + + return val !== undefined ? + val : + support.attributes || !documentIsHTML ? + elem.getAttribute( name ) : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; +}; + +Sizzle.escape = function( sel ) { + return ( sel + "" ).replace( rcssescape, fcssescape ); +}; + +Sizzle.error = function( msg ) { + throw new Error( "Syntax error, unrecognized expression: " + msg ); +}; + +/** + * Document sorting and removing duplicates + * @param {ArrayLike} results + */ +Sizzle.uniqueSort = function( results ) { + var elem, + duplicates = [], + j = 0, + i = 0; + + // Unless we *know* we can detect duplicates, assume their presence + hasDuplicate = !support.detectDuplicates; + sortInput = !support.sortStable && results.slice( 0 ); + results.sort( sortOrder ); + + if ( hasDuplicate ) { + while ( ( elem = results[ i++ ] ) ) { + if ( elem === results[ i ] ) { + j = duplicates.push( i ); + } + } + while ( j-- ) { + results.splice( duplicates[ j ], 1 ); + } + } + + // Clear input after sorting to release objects + // See https://github.com/jquery/sizzle/pull/225 + sortInput = null; + + return results; +}; + +/** + * Utility function for retrieving the text value of an array of DOM nodes + * @param {Array|Element} elem + */ +getText = Sizzle.getText = function( elem ) { + var node, + ret = "", + i = 0, + nodeType = elem.nodeType; + + if ( !nodeType ) { + + // If no nodeType, this is expected to be an array + while ( ( node = elem[ i++ ] ) ) { + + // Do not traverse comment nodes + ret += getText( node ); + } + } else if ( nodeType === 1 || nodeType === 9 || nodeType === 11 ) { + + // Use textContent for elements + // innerText usage removed for consistency of new lines (jQuery #11153) + if ( typeof elem.textContent === "string" ) { + return elem.textContent; + } else { + + // Traverse its children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + ret += getText( elem ); + } + } + } else if ( nodeType === 3 || nodeType === 4 ) { + return elem.nodeValue; + } + + // Do not include comment or processing instruction nodes + + return ret; +}; + +Expr = Sizzle.selectors = { + + // Can be adjusted by the user + cacheLength: 50, + + createPseudo: markFunction, + + match: matchExpr, + + attrHandle: {}, + + find: {}, + + relative: { + ">": { dir: "parentNode", first: true }, + " ": { dir: "parentNode" }, + "+": { dir: "previousSibling", first: true }, + "~": { dir: "previousSibling" } + }, + + preFilter: { + "ATTR": function( match ) { + match[ 1 ] = match[ 1 ].replace( runescape, funescape ); + + // Move the given value to match[3] whether quoted or unquoted + match[ 3 ] = ( match[ 3 ] || match[ 4 ] || + match[ 5 ] || "" ).replace( runescape, funescape ); + + if ( match[ 2 ] === "~=" ) { + match[ 3 ] = " " + match[ 3 ] + " "; + } + + return match.slice( 0, 4 ); + }, + + "CHILD": function( match ) { + + /* matches from matchExpr["CHILD"] + 1 type (only|nth|...) + 2 what (child|of-type) + 3 argument (even|odd|\d*|\d*n([+-]\d+)?|...) + 4 xn-component of xn+y argument ([+-]?\d*n|) + 5 sign of xn-component + 6 x of xn-component + 7 sign of y-component + 8 y of y-component + */ + match[ 1 ] = match[ 1 ].toLowerCase(); + + if ( match[ 1 ].slice( 0, 3 ) === "nth" ) { + + // nth-* requires argument + if ( !match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + // numeric x and y parameters for Expr.filter.CHILD + // remember that false/true cast respectively to 0/1 + match[ 4 ] = +( match[ 4 ] ? + match[ 5 ] + ( match[ 6 ] || 1 ) : + 2 * ( match[ 3 ] === "even" || match[ 3 ] === "odd" ) ); + match[ 5 ] = +( ( match[ 7 ] + match[ 8 ] ) || match[ 3 ] === "odd" ); + + // other types prohibit arguments + } else if ( match[ 3 ] ) { + Sizzle.error( match[ 0 ] ); + } + + return match; + }, + + "PSEUDO": function( match ) { + var excess, + unquoted = !match[ 6 ] && match[ 2 ]; + + if ( matchExpr[ "CHILD" ].test( match[ 0 ] ) ) { + return null; + } + + // Accept quoted arguments as-is + if ( match[ 3 ] ) { + match[ 2 ] = match[ 4 ] || match[ 5 ] || ""; + + // Strip excess characters from unquoted arguments + } else if ( unquoted && rpseudo.test( unquoted ) && + + // Get excess from tokenize (recursively) + ( excess = tokenize( unquoted, true ) ) && + + // advance to the next closing parenthesis + ( excess = unquoted.indexOf( ")", unquoted.length - excess ) - unquoted.length ) ) { + + // excess is a negative index + match[ 0 ] = match[ 0 ].slice( 0, excess ); + match[ 2 ] = unquoted.slice( 0, excess ); + } + + // Return only captures needed by the pseudo filter method (type and argument) + return match.slice( 0, 3 ); + } + }, + + filter: { + + "TAG": function( nodeNameSelector ) { + var nodeName = nodeNameSelector.replace( runescape, funescape ).toLowerCase(); + return nodeNameSelector === "*" ? + function() { + return true; + } : + function( elem ) { + return elem.nodeName && elem.nodeName.toLowerCase() === nodeName; + }; + }, + + "CLASS": function( className ) { + var pattern = classCache[ className + " " ]; + + return pattern || + ( pattern = new RegExp( "(^|" + whitespace + + ")" + className + "(" + whitespace + "|$)" ) ) && classCache( + className, function( elem ) { + return pattern.test( + typeof elem.className === "string" && elem.className || + typeof elem.getAttribute !== "undefined" && + elem.getAttribute( "class" ) || + "" + ); + } ); + }, + + "ATTR": function( name, operator, check ) { + return function( elem ) { + var result = Sizzle.attr( elem, name ); + + if ( result == null ) { + return operator === "!="; + } + if ( !operator ) { + return true; + } + + result += ""; + + /* eslint-disable max-len */ + + return operator === "=" ? result === check : + operator === "!=" ? result !== check : + operator === "^=" ? check && result.indexOf( check ) === 0 : + operator === "*=" ? check && result.indexOf( check ) > -1 : + operator === "$=" ? check && result.slice( -check.length ) === check : + operator === "~=" ? ( " " + result.replace( rwhitespace, " " ) + " " ).indexOf( check ) > -1 : + operator === "|=" ? result === check || result.slice( 0, check.length + 1 ) === check + "-" : + false; + /* eslint-enable max-len */ + + }; + }, + + "CHILD": function( type, what, _argument, first, last ) { + var simple = type.slice( 0, 3 ) !== "nth", + forward = type.slice( -4 ) !== "last", + ofType = what === "of-type"; + + return first === 1 && last === 0 ? + + // Shortcut for :nth-*(n) + function( elem ) { + return !!elem.parentNode; + } : + + function( elem, _context, xml ) { + var cache, uniqueCache, outerCache, node, nodeIndex, start, + dir = simple !== forward ? "nextSibling" : "previousSibling", + parent = elem.parentNode, + name = ofType && elem.nodeName.toLowerCase(), + useCache = !xml && !ofType, + diff = false; + + if ( parent ) { + + // :(first|last|only)-(child|of-type) + if ( simple ) { + while ( dir ) { + node = elem; + while ( ( node = node[ dir ] ) ) { + if ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) { + + return false; + } + } + + // Reverse direction for :only-* (if we haven't yet done so) + start = dir = type === "only" && !start && "nextSibling"; + } + return true; + } + + start = [ forward ? parent.firstChild : parent.lastChild ]; + + // non-xml :nth-child(...) stores cache data on `parent` + if ( forward && useCache ) { + + // Seek `elem` from a previously-cached index + + // ...in a gzip-friendly way + node = parent; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex && cache[ 2 ]; + node = nodeIndex && parent.childNodes[ nodeIndex ]; + + while ( ( node = ++nodeIndex && node && node[ dir ] || + + // Fallback to seeking `elem` from the start + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + // When found, cache indexes on `parent` and break + if ( node.nodeType === 1 && ++diff && node === elem ) { + uniqueCache[ type ] = [ dirruns, nodeIndex, diff ]; + break; + } + } + + } else { + + // Use previously-cached element index if available + if ( useCache ) { + + // ...in a gzip-friendly way + node = elem; + outerCache = node[ expando ] || ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + cache = uniqueCache[ type ] || []; + nodeIndex = cache[ 0 ] === dirruns && cache[ 1 ]; + diff = nodeIndex; + } + + // xml :nth-child(...) + // or :nth-last-child(...) or :nth(-last)?-of-type(...) + if ( diff === false ) { + + // Use the same loop as above to seek `elem` from the start + while ( ( node = ++nodeIndex && node && node[ dir ] || + ( diff = nodeIndex = 0 ) || start.pop() ) ) { + + if ( ( ofType ? + node.nodeName.toLowerCase() === name : + node.nodeType === 1 ) && + ++diff ) { + + // Cache the index of each encountered element + if ( useCache ) { + outerCache = node[ expando ] || + ( node[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ node.uniqueID ] || + ( outerCache[ node.uniqueID ] = {} ); + + uniqueCache[ type ] = [ dirruns, diff ]; + } + + if ( node === elem ) { + break; + } + } + } + } + } + + // Incorporate the offset, then check against cycle size + diff -= last; + return diff === first || ( diff % first === 0 && diff / first >= 0 ); + } + }; + }, + + "PSEUDO": function( pseudo, argument ) { + + // pseudo-class names are case-insensitive + // http://www.w3.org/TR/selectors/#pseudo-classes + // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters + // Remember that setFilters inherits from pseudos + var args, + fn = Expr.pseudos[ pseudo ] || Expr.setFilters[ pseudo.toLowerCase() ] || + Sizzle.error( "unsupported pseudo: " + pseudo ); + + // The user may use createPseudo to indicate that + // arguments are needed to create the filter function + // just as Sizzle does + if ( fn[ expando ] ) { + return fn( argument ); + } + + // But maintain support for old signatures + if ( fn.length > 1 ) { + args = [ pseudo, pseudo, "", argument ]; + return Expr.setFilters.hasOwnProperty( pseudo.toLowerCase() ) ? + markFunction( function( seed, matches ) { + var idx, + matched = fn( seed, argument ), + i = matched.length; + while ( i-- ) { + idx = indexOf( seed, matched[ i ] ); + seed[ idx ] = !( matches[ idx ] = matched[ i ] ); + } + } ) : + function( elem ) { + return fn( elem, 0, args ); + }; + } + + return fn; + } + }, + + pseudos: { + + // Potentially complex pseudos + "not": markFunction( function( selector ) { + + // Trim the selector passed to compile + // to avoid treating leading and trailing + // spaces as combinators + var input = [], + results = [], + matcher = compile( selector.replace( rtrim, "$1" ) ); + + return matcher[ expando ] ? + markFunction( function( seed, matches, _context, xml ) { + var elem, + unmatched = matcher( seed, null, xml, [] ), + i = seed.length; + + // Match elements unmatched by `matcher` + while ( i-- ) { + if ( ( elem = unmatched[ i ] ) ) { + seed[ i ] = !( matches[ i ] = elem ); + } + } + } ) : + function( elem, _context, xml ) { + input[ 0 ] = elem; + matcher( input, null, xml, results ); + + // Don't keep the element (issue #299) + input[ 0 ] = null; + return !results.pop(); + }; + } ), + + "has": markFunction( function( selector ) { + return function( elem ) { + return Sizzle( selector, elem ).length > 0; + }; + } ), + + "contains": markFunction( function( text ) { + text = text.replace( runescape, funescape ); + return function( elem ) { + return ( elem.textContent || getText( elem ) ).indexOf( text ) > -1; + }; + } ), + + // "Whether an element is represented by a :lang() selector + // is based solely on the element's language value + // being equal to the identifier C, + // or beginning with the identifier C immediately followed by "-". + // The matching of C against the element's language value is performed case-insensitively. + // The identifier C does not have to be a valid language name." + // http://www.w3.org/TR/selectors/#lang-pseudo + "lang": markFunction( function( lang ) { + + // lang value must be a valid identifier + if ( !ridentifier.test( lang || "" ) ) { + Sizzle.error( "unsupported lang: " + lang ); + } + lang = lang.replace( runescape, funescape ).toLowerCase(); + return function( elem ) { + var elemLang; + do { + if ( ( elemLang = documentIsHTML ? + elem.lang : + elem.getAttribute( "xml:lang" ) || elem.getAttribute( "lang" ) ) ) { + + elemLang = elemLang.toLowerCase(); + return elemLang === lang || elemLang.indexOf( lang + "-" ) === 0; + } + } while ( ( elem = elem.parentNode ) && elem.nodeType === 1 ); + return false; + }; + } ), + + // Miscellaneous + "target": function( elem ) { + var hash = window.location && window.location.hash; + return hash && hash.slice( 1 ) === elem.id; + }, + + "root": function( elem ) { + return elem === docElem; + }, + + "focus": function( elem ) { + return elem === document.activeElement && + ( !document.hasFocus || document.hasFocus() ) && + !!( elem.type || elem.href || ~elem.tabIndex ); + }, + + // Boolean properties + "enabled": createDisabledPseudo( false ), + "disabled": createDisabledPseudo( true ), + + "checked": function( elem ) { + + // In CSS3, :checked should return both checked and selected elements + // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked + var nodeName = elem.nodeName.toLowerCase(); + return ( nodeName === "input" && !!elem.checked ) || + ( nodeName === "option" && !!elem.selected ); + }, + + "selected": function( elem ) { + + // Accessing this property makes selected-by-default + // options in Safari work properly + if ( elem.parentNode ) { + // eslint-disable-next-line no-unused-expressions + elem.parentNode.selectedIndex; + } + + return elem.selected === true; + }, + + // Contents + "empty": function( elem ) { + + // http://www.w3.org/TR/selectors/#empty-pseudo + // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5), + // but not by others (comment: 8; processing instruction: 7; etc.) + // nodeType < 6 works because attributes (2) do not appear as children + for ( elem = elem.firstChild; elem; elem = elem.nextSibling ) { + if ( elem.nodeType < 6 ) { + return false; + } + } + return true; + }, + + "parent": function( elem ) { + return !Expr.pseudos[ "empty" ]( elem ); + }, + + // Element/input types + "header": function( elem ) { + return rheader.test( elem.nodeName ); + }, + + "input": function( elem ) { + return rinputs.test( elem.nodeName ); + }, + + "button": function( elem ) { + var name = elem.nodeName.toLowerCase(); + return name === "input" && elem.type === "button" || name === "button"; + }, + + "text": function( elem ) { + var attr; + return elem.nodeName.toLowerCase() === "input" && + elem.type === "text" && + + // Support: IE<8 + // New HTML5 attribute values (e.g., "search") appear with elem.type === "text" + ( ( attr = elem.getAttribute( "type" ) ) == null || + attr.toLowerCase() === "text" ); + }, + + // Position-in-collection + "first": createPositionalPseudo( function() { + return [ 0 ]; + } ), + + "last": createPositionalPseudo( function( _matchIndexes, length ) { + return [ length - 1 ]; + } ), + + "eq": createPositionalPseudo( function( _matchIndexes, length, argument ) { + return [ argument < 0 ? argument + length : argument ]; + } ), + + "even": createPositionalPseudo( function( matchIndexes, length ) { + var i = 0; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "odd": createPositionalPseudo( function( matchIndexes, length ) { + var i = 1; + for ( ; i < length; i += 2 ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "lt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? + argument + length : + argument > length ? + length : + argument; + for ( ; --i >= 0; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ), + + "gt": createPositionalPseudo( function( matchIndexes, length, argument ) { + var i = argument < 0 ? argument + length : argument; + for ( ; ++i < length; ) { + matchIndexes.push( i ); + } + return matchIndexes; + } ) + } +}; + +Expr.pseudos[ "nth" ] = Expr.pseudos[ "eq" ]; + +// Add button/input type pseudos +for ( i in { radio: true, checkbox: true, file: true, password: true, image: true } ) { + Expr.pseudos[ i ] = createInputPseudo( i ); +} +for ( i in { submit: true, reset: true } ) { + Expr.pseudos[ i ] = createButtonPseudo( i ); +} + +// Easy API for creating new setFilters +function setFilters() {} +setFilters.prototype = Expr.filters = Expr.pseudos; +Expr.setFilters = new setFilters(); + +tokenize = Sizzle.tokenize = function( selector, parseOnly ) { + var matched, match, tokens, type, + soFar, groups, preFilters, + cached = tokenCache[ selector + " " ]; + + if ( cached ) { + return parseOnly ? 0 : cached.slice( 0 ); + } + + soFar = selector; + groups = []; + preFilters = Expr.preFilter; + + while ( soFar ) { + + // Comma and first run + if ( !matched || ( match = rcomma.exec( soFar ) ) ) { + if ( match ) { + + // Don't consume trailing commas as valid + soFar = soFar.slice( match[ 0 ].length ) || soFar; + } + groups.push( ( tokens = [] ) ); + } + + matched = false; + + // Combinators + if ( ( match = rcombinators.exec( soFar ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + + // Cast descendant combinators to space + type: match[ 0 ].replace( rtrim, " " ) + } ); + soFar = soFar.slice( matched.length ); + } + + // Filters + for ( type in Expr.filter ) { + if ( ( match = matchExpr[ type ].exec( soFar ) ) && ( !preFilters[ type ] || + ( match = preFilters[ type ]( match ) ) ) ) { + matched = match.shift(); + tokens.push( { + value: matched, + type: type, + matches: match + } ); + soFar = soFar.slice( matched.length ); + } + } + + if ( !matched ) { + break; + } + } + + // Return the length of the invalid excess + // if we're just parsing + // Otherwise, throw an error or return tokens + return parseOnly ? + soFar.length : + soFar ? + Sizzle.error( selector ) : + + // Cache the tokens + tokenCache( selector, groups ).slice( 0 ); +}; + +function toSelector( tokens ) { + var i = 0, + len = tokens.length, + selector = ""; + for ( ; i < len; i++ ) { + selector += tokens[ i ].value; + } + return selector; +} + +function addCombinator( matcher, combinator, base ) { + var dir = combinator.dir, + skip = combinator.next, + key = skip || dir, + checkNonElements = base && key === "parentNode", + doneName = done++; + + return combinator.first ? + + // Check against closest ancestor/preceding element + function( elem, context, xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + return matcher( elem, context, xml ); + } + } + return false; + } : + + // Check against all ancestor/preceding elements + function( elem, context, xml ) { + var oldCache, uniqueCache, outerCache, + newCache = [ dirruns, doneName ]; + + // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching + if ( xml ) { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + if ( matcher( elem, context, xml ) ) { + return true; + } + } + } + } else { + while ( ( elem = elem[ dir ] ) ) { + if ( elem.nodeType === 1 || checkNonElements ) { + outerCache = elem[ expando ] || ( elem[ expando ] = {} ); + + // Support: IE <9 only + // Defend against cloned attroperties (jQuery gh-1709) + uniqueCache = outerCache[ elem.uniqueID ] || + ( outerCache[ elem.uniqueID ] = {} ); + + if ( skip && skip === elem.nodeName.toLowerCase() ) { + elem = elem[ dir ] || elem; + } else if ( ( oldCache = uniqueCache[ key ] ) && + oldCache[ 0 ] === dirruns && oldCache[ 1 ] === doneName ) { + + // Assign to newCache so results back-propagate to previous elements + return ( newCache[ 2 ] = oldCache[ 2 ] ); + } else { + + // Reuse newcache so results back-propagate to previous elements + uniqueCache[ key ] = newCache; + + // A match means we're done; a fail means we have to keep checking + if ( ( newCache[ 2 ] = matcher( elem, context, xml ) ) ) { + return true; + } + } + } + } + } + return false; + }; +} + +function elementMatcher( matchers ) { + return matchers.length > 1 ? + function( elem, context, xml ) { + var i = matchers.length; + while ( i-- ) { + if ( !matchers[ i ]( elem, context, xml ) ) { + return false; + } + } + return true; + } : + matchers[ 0 ]; +} + +function multipleContexts( selector, contexts, results ) { + var i = 0, + len = contexts.length; + for ( ; i < len; i++ ) { + Sizzle( selector, contexts[ i ], results ); + } + return results; +} + +function condense( unmatched, map, filter, context, xml ) { + var elem, + newUnmatched = [], + i = 0, + len = unmatched.length, + mapped = map != null; + + for ( ; i < len; i++ ) { + if ( ( elem = unmatched[ i ] ) ) { + if ( !filter || filter( elem, context, xml ) ) { + newUnmatched.push( elem ); + if ( mapped ) { + map.push( i ); + } + } + } + } + + return newUnmatched; +} + +function setMatcher( preFilter, selector, matcher, postFilter, postFinder, postSelector ) { + if ( postFilter && !postFilter[ expando ] ) { + postFilter = setMatcher( postFilter ); + } + if ( postFinder && !postFinder[ expando ] ) { + postFinder = setMatcher( postFinder, postSelector ); + } + return markFunction( function( seed, results, context, xml ) { + var temp, i, elem, + preMap = [], + postMap = [], + preexisting = results.length, + + // Get initial elements from seed or context + elems = seed || multipleContexts( + selector || "*", + context.nodeType ? [ context ] : context, + [] + ), + + // Prefilter to get matcher input, preserving a map for seed-results synchronization + matcherIn = preFilter && ( seed || !selector ) ? + condense( elems, preMap, preFilter, context, xml ) : + elems, + + matcherOut = matcher ? + + // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results, + postFinder || ( seed ? preFilter : preexisting || postFilter ) ? + + // ...intermediate processing is necessary + [] : + + // ...otherwise use results directly + results : + matcherIn; + + // Find primary matches + if ( matcher ) { + matcher( matcherIn, matcherOut, context, xml ); + } + + // Apply postFilter + if ( postFilter ) { + temp = condense( matcherOut, postMap ); + postFilter( temp, [], context, xml ); + + // Un-match failing elements by moving them back to matcherIn + i = temp.length; + while ( i-- ) { + if ( ( elem = temp[ i ] ) ) { + matcherOut[ postMap[ i ] ] = !( matcherIn[ postMap[ i ] ] = elem ); + } + } + } + + if ( seed ) { + if ( postFinder || preFilter ) { + if ( postFinder ) { + + // Get the final matcherOut by condensing this intermediate into postFinder contexts + temp = []; + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) ) { + + // Restore matcherIn since elem is not yet a final match + temp.push( ( matcherIn[ i ] = elem ) ); + } + } + postFinder( null, ( matcherOut = [] ), temp, xml ); + } + + // Move matched elements from seed to results to keep them synchronized + i = matcherOut.length; + while ( i-- ) { + if ( ( elem = matcherOut[ i ] ) && + ( temp = postFinder ? indexOf( seed, elem ) : preMap[ i ] ) > -1 ) { + + seed[ temp ] = !( results[ temp ] = elem ); + } + } + } + + // Add elements to results, through postFinder if defined + } else { + matcherOut = condense( + matcherOut === results ? + matcherOut.splice( preexisting, matcherOut.length ) : + matcherOut + ); + if ( postFinder ) { + postFinder( null, results, matcherOut, xml ); + } else { + push.apply( results, matcherOut ); + } + } + } ); +} + +function matcherFromTokens( tokens ) { + var checkContext, matcher, j, + len = tokens.length, + leadingRelative = Expr.relative[ tokens[ 0 ].type ], + implicitRelative = leadingRelative || Expr.relative[ " " ], + i = leadingRelative ? 1 : 0, + + // The foundational matcher ensures that elements are reachable from top-level context(s) + matchContext = addCombinator( function( elem ) { + return elem === checkContext; + }, implicitRelative, true ), + matchAnyContext = addCombinator( function( elem ) { + return indexOf( checkContext, elem ) > -1; + }, implicitRelative, true ), + matchers = [ function( elem, context, xml ) { + var ret = ( !leadingRelative && ( xml || context !== outermostContext ) ) || ( + ( checkContext = context ).nodeType ? + matchContext( elem, context, xml ) : + matchAnyContext( elem, context, xml ) ); + + // Avoid hanging onto element (issue #299) + checkContext = null; + return ret; + } ]; + + for ( ; i < len; i++ ) { + if ( ( matcher = Expr.relative[ tokens[ i ].type ] ) ) { + matchers = [ addCombinator( elementMatcher( matchers ), matcher ) ]; + } else { + matcher = Expr.filter[ tokens[ i ].type ].apply( null, tokens[ i ].matches ); + + // Return special upon seeing a positional matcher + if ( matcher[ expando ] ) { + + // Find the next relative operator (if any) for proper handling + j = ++i; + for ( ; j < len; j++ ) { + if ( Expr.relative[ tokens[ j ].type ] ) { + break; + } + } + return setMatcher( + i > 1 && elementMatcher( matchers ), + i > 1 && toSelector( + + // If the preceding token was a descendant combinator, insert an implicit any-element `*` + tokens + .slice( 0, i - 1 ) + .concat( { value: tokens[ i - 2 ].type === " " ? "*" : "" } ) + ).replace( rtrim, "$1" ), + matcher, + i < j && matcherFromTokens( tokens.slice( i, j ) ), + j < len && matcherFromTokens( ( tokens = tokens.slice( j ) ) ), + j < len && toSelector( tokens ) + ); + } + matchers.push( matcher ); + } + } + + return elementMatcher( matchers ); +} + +function matcherFromGroupMatchers( elementMatchers, setMatchers ) { + var bySet = setMatchers.length > 0, + byElement = elementMatchers.length > 0, + superMatcher = function( seed, context, xml, results, outermost ) { + var elem, j, matcher, + matchedCount = 0, + i = "0", + unmatched = seed && [], + setMatched = [], + contextBackup = outermostContext, + + // We must always have either seed elements or outermost context + elems = seed || byElement && Expr.find[ "TAG" ]( "*", outermost ), + + // Use integer dirruns iff this is the outermost matcher + dirrunsUnique = ( dirruns += contextBackup == null ? 1 : Math.random() || 0.1 ), + len = elems.length; + + if ( outermost ) { + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + outermostContext = context == document || context || outermost; + } + + // Add elements passing elementMatchers directly to results + // Support: IE<9, Safari + // Tolerate NodeList properties (IE: "length"; Safari: ) matching elements by id + for ( ; i !== len && ( elem = elems[ i ] ) != null; i++ ) { + if ( byElement && elem ) { + j = 0; + + // Support: IE 11+, Edge 17 - 18+ + // IE/Edge sometimes throw a "Permission denied" error when strict-comparing + // two documents; shallow comparisons work. + // eslint-disable-next-line eqeqeq + if ( !context && elem.ownerDocument != document ) { + setDocument( elem ); + xml = !documentIsHTML; + } + while ( ( matcher = elementMatchers[ j++ ] ) ) { + if ( matcher( elem, context || document, xml ) ) { + results.push( elem ); + break; + } + } + if ( outermost ) { + dirruns = dirrunsUnique; + } + } + + // Track unmatched elements for set filters + if ( bySet ) { + + // They will have gone through all possible matchers + if ( ( elem = !matcher && elem ) ) { + matchedCount--; + } + + // Lengthen the array for every element, matched or not + if ( seed ) { + unmatched.push( elem ); + } + } + } + + // `i` is now the count of elements visited above, and adding it to `matchedCount` + // makes the latter nonnegative. + matchedCount += i; + + // Apply set filters to unmatched elements + // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount` + // equals `i`), unless we didn't visit _any_ elements in the above loop because we have + // no element matchers and no seed. + // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that + // case, which will result in a "00" `matchedCount` that differs from `i` but is also + // numerically zero. + if ( bySet && i !== matchedCount ) { + j = 0; + while ( ( matcher = setMatchers[ j++ ] ) ) { + matcher( unmatched, setMatched, context, xml ); + } + + if ( seed ) { + + // Reintegrate element matches to eliminate the need for sorting + if ( matchedCount > 0 ) { + while ( i-- ) { + if ( !( unmatched[ i ] || setMatched[ i ] ) ) { + setMatched[ i ] = pop.call( results ); + } + } + } + + // Discard index placeholder values to get only actual matches + setMatched = condense( setMatched ); + } + + // Add matches to results + push.apply( results, setMatched ); + + // Seedless set matches succeeding multiple successful matchers stipulate sorting + if ( outermost && !seed && setMatched.length > 0 && + ( matchedCount + setMatchers.length ) > 1 ) { + + Sizzle.uniqueSort( results ); + } + } + + // Override manipulation of globals by nested matchers + if ( outermost ) { + dirruns = dirrunsUnique; + outermostContext = contextBackup; + } + + return unmatched; + }; + + return bySet ? + markFunction( superMatcher ) : + superMatcher; +} + +compile = Sizzle.compile = function( selector, match /* Internal Use Only */ ) { + var i, + setMatchers = [], + elementMatchers = [], + cached = compilerCache[ selector + " " ]; + + if ( !cached ) { + + // Generate a function of recursive functions that can be used to check each element + if ( !match ) { + match = tokenize( selector ); + } + i = match.length; + while ( i-- ) { + cached = matcherFromTokens( match[ i ] ); + if ( cached[ expando ] ) { + setMatchers.push( cached ); + } else { + elementMatchers.push( cached ); + } + } + + // Cache the compiled function + cached = compilerCache( + selector, + matcherFromGroupMatchers( elementMatchers, setMatchers ) + ); + + // Save selector and tokenization + cached.selector = selector; + } + return cached; +}; + +/** + * A low-level selection function that works with Sizzle's compiled + * selector functions + * @param {String|Function} selector A selector or a pre-compiled + * selector function built with Sizzle.compile + * @param {Element} context + * @param {Array} [results] + * @param {Array} [seed] A set of elements to match against + */ +select = Sizzle.select = function( selector, context, results, seed ) { + var i, tokens, token, type, find, + compiled = typeof selector === "function" && selector, + match = !seed && tokenize( ( selector = compiled.selector || selector ) ); + + results = results || []; + + // Try to minimize operations if there is only one selector in the list and no seed + // (the latter of which guarantees us context) + if ( match.length === 1 ) { + + // Reduce context if the leading compound selector is an ID + tokens = match[ 0 ] = match[ 0 ].slice( 0 ); + if ( tokens.length > 2 && ( token = tokens[ 0 ] ).type === "ID" && + context.nodeType === 9 && documentIsHTML && Expr.relative[ tokens[ 1 ].type ] ) { + + context = ( Expr.find[ "ID" ]( token.matches[ 0 ] + .replace( runescape, funescape ), context ) || [] )[ 0 ]; + if ( !context ) { + return results; + + // Precompiled matchers will still verify ancestry, so step up a level + } else if ( compiled ) { + context = context.parentNode; + } + + selector = selector.slice( tokens.shift().value.length ); + } + + // Fetch a seed set for right-to-left matching + i = matchExpr[ "needsContext" ].test( selector ) ? 0 : tokens.length; + while ( i-- ) { + token = tokens[ i ]; + + // Abort if we hit a combinator + if ( Expr.relative[ ( type = token.type ) ] ) { + break; + } + if ( ( find = Expr.find[ type ] ) ) { + + // Search, expanding context for leading sibling combinators + if ( ( seed = find( + token.matches[ 0 ].replace( runescape, funescape ), + rsibling.test( tokens[ 0 ].type ) && testContext( context.parentNode ) || + context + ) ) ) { + + // If seed is empty or no tokens remain, we can return early + tokens.splice( i, 1 ); + selector = seed.length && toSelector( tokens ); + if ( !selector ) { + push.apply( results, seed ); + return results; + } + + break; + } + } + } + } + + // Compile and execute a filtering function if one is not provided + // Provide `match` to avoid retokenization if we modified the selector above + ( compiled || compile( selector, match ) )( + seed, + context, + !documentIsHTML, + results, + !context || rsibling.test( selector ) && testContext( context.parentNode ) || context + ); + return results; +}; + +// One-time assignments + +// Sort stability +support.sortStable = expando.split( "" ).sort( sortOrder ).join( "" ) === expando; + +// Support: Chrome 14-35+ +// Always assume duplicates if they aren't passed to the comparison function +support.detectDuplicates = !!hasDuplicate; + +// Initialize against the default document +setDocument(); + +// Support: Webkit<537.32 - Safari 6.0.3/Chrome 25 (fixed in Chrome 27) +// Detached nodes confoundingly follow *each other* +support.sortDetached = assert( function( el ) { + + // Should return 1, but returns 4 (following) + return el.compareDocumentPosition( document.createElement( "fieldset" ) ) & 1; +} ); + +// Support: IE<8 +// Prevent attribute/property "interpolation" +// https://msdn.microsoft.com/en-us/library/ms536429%28VS.85%29.aspx +if ( !assert( function( el ) { + el.innerHTML = ""; + return el.firstChild.getAttribute( "href" ) === "#"; +} ) ) { + addHandle( "type|href|height|width", function( elem, name, isXML ) { + if ( !isXML ) { + return elem.getAttribute( name, name.toLowerCase() === "type" ? 1 : 2 ); + } + } ); +} + +// Support: IE<9 +// Use defaultValue in place of getAttribute("value") +if ( !support.attributes || !assert( function( el ) { + el.innerHTML = ""; + el.firstChild.setAttribute( "value", "" ); + return el.firstChild.getAttribute( "value" ) === ""; +} ) ) { + addHandle( "value", function( elem, _name, isXML ) { + if ( !isXML && elem.nodeName.toLowerCase() === "input" ) { + return elem.defaultValue; + } + } ); +} + +// Support: IE<9 +// Use getAttributeNode to fetch booleans when getAttribute lies +if ( !assert( function( el ) { + return el.getAttribute( "disabled" ) == null; +} ) ) { + addHandle( booleans, function( elem, name, isXML ) { + var val; + if ( !isXML ) { + return elem[ name ] === true ? name.toLowerCase() : + ( val = elem.getAttributeNode( name ) ) && val.specified ? + val.value : + null; + } + } ); +} + +return Sizzle; + +} )( window ); + + + +jQuery.find = Sizzle; +jQuery.expr = Sizzle.selectors; + +// Deprecated +jQuery.expr[ ":" ] = jQuery.expr.pseudos; +jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort; +jQuery.text = Sizzle.getText; +jQuery.isXMLDoc = Sizzle.isXML; +jQuery.contains = Sizzle.contains; +jQuery.escapeSelector = Sizzle.escape; + + + + +var dir = function( elem, dir, until ) { + var matched = [], + truncate = until !== undefined; + + while ( ( elem = elem[ dir ] ) && elem.nodeType !== 9 ) { + if ( elem.nodeType === 1 ) { + if ( truncate && jQuery( elem ).is( until ) ) { + break; + } + matched.push( elem ); + } + } + return matched; +}; + + +var siblings = function( n, elem ) { + var matched = []; + + for ( ; n; n = n.nextSibling ) { + if ( n.nodeType === 1 && n !== elem ) { + matched.push( n ); + } + } + + return matched; +}; + + +var rneedsContext = jQuery.expr.match.needsContext; + + + +function nodeName( elem, name ) { + + return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase(); + +}; +var rsingleTag = ( /^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i ); + + + +// Implement the identical functionality for filter and not +function winnow( elements, qualifier, not ) { + if ( isFunction( qualifier ) ) { + return jQuery.grep( elements, function( elem, i ) { + return !!qualifier.call( elem, i, elem ) !== not; + } ); + } + + // Single element + if ( qualifier.nodeType ) { + return jQuery.grep( elements, function( elem ) { + return ( elem === qualifier ) !== not; + } ); + } + + // Arraylike of elements (jQuery, arguments, Array) + if ( typeof qualifier !== "string" ) { + return jQuery.grep( elements, function( elem ) { + return ( indexOf.call( qualifier, elem ) > -1 ) !== not; + } ); + } + + // Filtered directly for both simple and complex selectors + return jQuery.filter( qualifier, elements, not ); +} + +jQuery.filter = function( expr, elems, not ) { + var elem = elems[ 0 ]; + + if ( not ) { + expr = ":not(" + expr + ")"; + } + + if ( elems.length === 1 && elem.nodeType === 1 ) { + return jQuery.find.matchesSelector( elem, expr ) ? [ elem ] : []; + } + + return jQuery.find.matches( expr, jQuery.grep( elems, function( elem ) { + return elem.nodeType === 1; + } ) ); +}; + +jQuery.fn.extend( { + find: function( selector ) { + var i, ret, + len = this.length, + self = this; + + if ( typeof selector !== "string" ) { + return this.pushStack( jQuery( selector ).filter( function() { + for ( i = 0; i < len; i++ ) { + if ( jQuery.contains( self[ i ], this ) ) { + return true; + } + } + } ) ); + } + + ret = this.pushStack( [] ); + + for ( i = 0; i < len; i++ ) { + jQuery.find( selector, self[ i ], ret ); + } + + return len > 1 ? jQuery.uniqueSort( ret ) : ret; + }, + filter: function( selector ) { + return this.pushStack( winnow( this, selector || [], false ) ); + }, + not: function( selector ) { + return this.pushStack( winnow( this, selector || [], true ) ); + }, + is: function( selector ) { + return !!winnow( + this, + + // If this is a positional/relative selector, check membership in the returned set + // so $("p:first").is("p:last") won't return true for a doc with two "p". + typeof selector === "string" && rneedsContext.test( selector ) ? + jQuery( selector ) : + selector || [], + false + ).length; + } +} ); + + +// Initialize a jQuery object + + +// A central reference to the root jQuery(document) +var rootjQuery, + + // A simple way to check for HTML strings + // Prioritize #id over to avoid XSS via location.hash (#9521) + // Strict HTML recognition (#11290: must start with <) + // Shortcut simple #id case for speed + rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/, + + init = jQuery.fn.init = function( selector, context, root ) { + var match, elem; + + // HANDLE: $(""), $(null), $(undefined), $(false) + if ( !selector ) { + return this; + } + + // Method init() accepts an alternate rootjQuery + // so migrate can support jQuery.sub (gh-2101) + root = root || rootjQuery; + + // Handle HTML strings + if ( typeof selector === "string" ) { + if ( selector[ 0 ] === "<" && + selector[ selector.length - 1 ] === ">" && + selector.length >= 3 ) { + + // Assume that strings that start and end with <> are HTML and skip the regex check + match = [ null, selector, null ]; + + } else { + match = rquickExpr.exec( selector ); + } + + // Match html or make sure no context is specified for #id + if ( match && ( match[ 1 ] || !context ) ) { + + // HANDLE: $(html) -> $(array) + if ( match[ 1 ] ) { + context = context instanceof jQuery ? context[ 0 ] : context; + + // Option to run scripts is true for back-compat + // Intentionally let the error be thrown if parseHTML is not present + jQuery.merge( this, jQuery.parseHTML( + match[ 1 ], + context && context.nodeType ? context.ownerDocument || context : document, + true + ) ); + + // HANDLE: $(html, props) + if ( rsingleTag.test( match[ 1 ] ) && jQuery.isPlainObject( context ) ) { + for ( match in context ) { + + // Properties of context are called as methods if possible + if ( isFunction( this[ match ] ) ) { + this[ match ]( context[ match ] ); + + // ...and otherwise set as attributes + } else { + this.attr( match, context[ match ] ); + } + } + } + + return this; + + // HANDLE: $(#id) + } else { + elem = document.getElementById( match[ 2 ] ); + + if ( elem ) { + + // Inject the element directly into the jQuery object + this[ 0 ] = elem; + this.length = 1; + } + return this; + } + + // HANDLE: $(expr, $(...)) + } else if ( !context || context.jquery ) { + return ( context || root ).find( selector ); + + // HANDLE: $(expr, context) + // (which is just equivalent to: $(context).find(expr) + } else { + return this.constructor( context ).find( selector ); + } + + // HANDLE: $(DOMElement) + } else if ( selector.nodeType ) { + this[ 0 ] = selector; + this.length = 1; + return this; + + // HANDLE: $(function) + // Shortcut for document ready + } else if ( isFunction( selector ) ) { + return root.ready !== undefined ? + root.ready( selector ) : + + // Execute immediately if ready is not present + selector( jQuery ); + } + + return jQuery.makeArray( selector, this ); + }; + +// Give the init function the jQuery prototype for later instantiation +init.prototype = jQuery.fn; + +// Initialize central reference +rootjQuery = jQuery( document ); + + +var rparentsprev = /^(?:parents|prev(?:Until|All))/, + + // Methods guaranteed to produce a unique set when starting from a unique set + guaranteedUnique = { + children: true, + contents: true, + next: true, + prev: true + }; + +jQuery.fn.extend( { + has: function( target ) { + var targets = jQuery( target, this ), + l = targets.length; + + return this.filter( function() { + var i = 0; + for ( ; i < l; i++ ) { + if ( jQuery.contains( this, targets[ i ] ) ) { + return true; + } + } + } ); + }, + + closest: function( selectors, context ) { + var cur, + i = 0, + l = this.length, + matched = [], + targets = typeof selectors !== "string" && jQuery( selectors ); + + // Positional selectors never match, since there's no _selection_ context + if ( !rneedsContext.test( selectors ) ) { + for ( ; i < l; i++ ) { + for ( cur = this[ i ]; cur && cur !== context; cur = cur.parentNode ) { + + // Always skip document fragments + if ( cur.nodeType < 11 && ( targets ? + targets.index( cur ) > -1 : + + // Don't pass non-elements to Sizzle + cur.nodeType === 1 && + jQuery.find.matchesSelector( cur, selectors ) ) ) { + + matched.push( cur ); + break; + } + } + } + } + + return this.pushStack( matched.length > 1 ? jQuery.uniqueSort( matched ) : matched ); + }, + + // Determine the position of an element within the set + index: function( elem ) { + + // No argument, return index in parent + if ( !elem ) { + return ( this[ 0 ] && this[ 0 ].parentNode ) ? this.first().prevAll().length : -1; + } + + // Index in selector + if ( typeof elem === "string" ) { + return indexOf.call( jQuery( elem ), this[ 0 ] ); + } + + // Locate the position of the desired element + return indexOf.call( this, + + // If it receives a jQuery object, the first element is used + elem.jquery ? elem[ 0 ] : elem + ); + }, + + add: function( selector, context ) { + return this.pushStack( + jQuery.uniqueSort( + jQuery.merge( this.get(), jQuery( selector, context ) ) + ) + ); + }, + + addBack: function( selector ) { + return this.add( selector == null ? + this.prevObject : this.prevObject.filter( selector ) + ); + } +} ); + +function sibling( cur, dir ) { + while ( ( cur = cur[ dir ] ) && cur.nodeType !== 1 ) {} + return cur; +} + +jQuery.each( { + parent: function( elem ) { + var parent = elem.parentNode; + return parent && parent.nodeType !== 11 ? parent : null; + }, + parents: function( elem ) { + return dir( elem, "parentNode" ); + }, + parentsUntil: function( elem, _i, until ) { + return dir( elem, "parentNode", until ); + }, + next: function( elem ) { + return sibling( elem, "nextSibling" ); + }, + prev: function( elem ) { + return sibling( elem, "previousSibling" ); + }, + nextAll: function( elem ) { + return dir( elem, "nextSibling" ); + }, + prevAll: function( elem ) { + return dir( elem, "previousSibling" ); + }, + nextUntil: function( elem, _i, until ) { + return dir( elem, "nextSibling", until ); + }, + prevUntil: function( elem, _i, until ) { + return dir( elem, "previousSibling", until ); + }, + siblings: function( elem ) { + return siblings( ( elem.parentNode || {} ).firstChild, elem ); + }, + children: function( elem ) { + return siblings( elem.firstChild ); + }, + contents: function( elem ) { + if ( elem.contentDocument != null && + + // Support: IE 11+ + // elements with no `data` attribute has an object + // `contentDocument` with a `null` prototype. + getProto( elem.contentDocument ) ) { + + return elem.contentDocument; + } + + // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only + // Treat the template element as a regular one in browsers that + // don't support it. + if ( nodeName( elem, "template" ) ) { + elem = elem.content || elem; + } + + return jQuery.merge( [], elem.childNodes ); + } +}, function( name, fn ) { + jQuery.fn[ name ] = function( until, selector ) { + var matched = jQuery.map( this, fn, until ); + + if ( name.slice( -5 ) !== "Until" ) { + selector = until; + } + + if ( selector && typeof selector === "string" ) { + matched = jQuery.filter( selector, matched ); + } + + if ( this.length > 1 ) { + + // Remove duplicates + if ( !guaranteedUnique[ name ] ) { + jQuery.uniqueSort( matched ); + } + + // Reverse order for parents* and prev-derivatives + if ( rparentsprev.test( name ) ) { + matched.reverse(); + } + } + + return this.pushStack( matched ); + }; +} ); +var rnothtmlwhite = ( /[^\x20\t\r\n\f]+/g ); + + + +// Convert String-formatted options into Object-formatted ones +function createOptions( options ) { + var object = {}; + jQuery.each( options.match( rnothtmlwhite ) || [], function( _, flag ) { + object[ flag ] = true; + } ); + return object; +} + +/* + * Create a callback list using the following parameters: + * + * options: an optional list of space-separated options that will change how + * the callback list behaves or a more traditional option object + * + * By default a callback list will act like an event callback list and can be + * "fired" multiple times. + * + * Possible options: + * + * once: will ensure the callback list can only be fired once (like a Deferred) + * + * memory: will keep track of previous values and will call any callback added + * after the list has been fired right away with the latest "memorized" + * values (like a Deferred) + * + * unique: will ensure a callback can only be added once (no duplicate in the list) + * + * stopOnFalse: interrupt callings when a callback returns false + * + */ +jQuery.Callbacks = function( options ) { + + // Convert options from String-formatted to Object-formatted if needed + // (we check in cache first) + options = typeof options === "string" ? + createOptions( options ) : + jQuery.extend( {}, options ); + + var // Flag to know if list is currently firing + firing, + + // Last fire value for non-forgettable lists + memory, + + // Flag to know if list was already fired + fired, + + // Flag to prevent firing + locked, + + // Actual callback list + list = [], + + // Queue of execution data for repeatable lists + queue = [], + + // Index of currently firing callback (modified by add/remove as needed) + firingIndex = -1, + + // Fire callbacks + fire = function() { + + // Enforce single-firing + locked = locked || options.once; + + // Execute callbacks for all pending executions, + // respecting firingIndex overrides and runtime changes + fired = firing = true; + for ( ; queue.length; firingIndex = -1 ) { + memory = queue.shift(); + while ( ++firingIndex < list.length ) { + + // Run callback and check for early termination + if ( list[ firingIndex ].apply( memory[ 0 ], memory[ 1 ] ) === false && + options.stopOnFalse ) { + + // Jump to end and forget the data so .add doesn't re-fire + firingIndex = list.length; + memory = false; + } + } + } + + // Forget the data if we're done with it + if ( !options.memory ) { + memory = false; + } + + firing = false; + + // Clean up if we're done firing for good + if ( locked ) { + + // Keep an empty list if we have data for future add calls + if ( memory ) { + list = []; + + // Otherwise, this object is spent + } else { + list = ""; + } + } + }, + + // Actual Callbacks object + self = { + + // Add a callback or a collection of callbacks to the list + add: function() { + if ( list ) { + + // If we have memory from a past run, we should fire after adding + if ( memory && !firing ) { + firingIndex = list.length - 1; + queue.push( memory ); + } + + ( function add( args ) { + jQuery.each( args, function( _, arg ) { + if ( isFunction( arg ) ) { + if ( !options.unique || !self.has( arg ) ) { + list.push( arg ); + } + } else if ( arg && arg.length && toType( arg ) !== "string" ) { + + // Inspect recursively + add( arg ); + } + } ); + } )( arguments ); + + if ( memory && !firing ) { + fire(); + } + } + return this; + }, + + // Remove a callback from the list + remove: function() { + jQuery.each( arguments, function( _, arg ) { + var index; + while ( ( index = jQuery.inArray( arg, list, index ) ) > -1 ) { + list.splice( index, 1 ); + + // Handle firing indexes + if ( index <= firingIndex ) { + firingIndex--; + } + } + } ); + return this; + }, + + // Check if a given callback is in the list. + // If no argument is given, return whether or not list has callbacks attached. + has: function( fn ) { + return fn ? + jQuery.inArray( fn, list ) > -1 : + list.length > 0; + }, + + // Remove all callbacks from the list + empty: function() { + if ( list ) { + list = []; + } + return this; + }, + + // Disable .fire and .add + // Abort any current/pending executions + // Clear all callbacks and values + disable: function() { + locked = queue = []; + list = memory = ""; + return this; + }, + disabled: function() { + return !list; + }, + + // Disable .fire + // Also disable .add unless we have memory (since it would have no effect) + // Abort any pending executions + lock: function() { + locked = queue = []; + if ( !memory && !firing ) { + list = memory = ""; + } + return this; + }, + locked: function() { + return !!locked; + }, + + // Call all callbacks with the given context and arguments + fireWith: function( context, args ) { + if ( !locked ) { + args = args || []; + args = [ context, args.slice ? args.slice() : args ]; + queue.push( args ); + if ( !firing ) { + fire(); + } + } + return this; + }, + + // Call all the callbacks with the given arguments + fire: function() { + self.fireWith( this, arguments ); + return this; + }, + + // To know if the callbacks have already been called at least once + fired: function() { + return !!fired; + } + }; + + return self; +}; + + +function Identity( v ) { + return v; +} +function Thrower( ex ) { + throw ex; +} + +function adoptValue( value, resolve, reject, noValue ) { + var method; + + try { + + // Check for promise aspect first to privilege synchronous behavior + if ( value && isFunction( ( method = value.promise ) ) ) { + method.call( value ).done( resolve ).fail( reject ); + + // Other thenables + } else if ( value && isFunction( ( method = value.then ) ) ) { + method.call( value, resolve, reject ); + + // Other non-thenables + } else { + + // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer: + // * false: [ value ].slice( 0 ) => resolve( value ) + // * true: [ value ].slice( 1 ) => resolve() + resolve.apply( undefined, [ value ].slice( noValue ) ); + } + + // For Promises/A+, convert exceptions into rejections + // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in + // Deferred#then to conditionally suppress rejection. + } catch ( value ) { + + // Support: Android 4.0 only + // Strict mode functions invoked without .call/.apply get global-object context + reject.apply( undefined, [ value ] ); + } +} + +jQuery.extend( { + + Deferred: function( func ) { + var tuples = [ + + // action, add listener, callbacks, + // ... .then handlers, argument index, [final state] + [ "notify", "progress", jQuery.Callbacks( "memory" ), + jQuery.Callbacks( "memory" ), 2 ], + [ "resolve", "done", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 0, "resolved" ], + [ "reject", "fail", jQuery.Callbacks( "once memory" ), + jQuery.Callbacks( "once memory" ), 1, "rejected" ] + ], + state = "pending", + promise = { + state: function() { + return state; + }, + always: function() { + deferred.done( arguments ).fail( arguments ); + return this; + }, + "catch": function( fn ) { + return promise.then( null, fn ); + }, + + // Keep pipe for back-compat + pipe: function( /* fnDone, fnFail, fnProgress */ ) { + var fns = arguments; + + return jQuery.Deferred( function( newDefer ) { + jQuery.each( tuples, function( _i, tuple ) { + + // Map tuples (progress, done, fail) to arguments (done, fail, progress) + var fn = isFunction( fns[ tuple[ 4 ] ] ) && fns[ tuple[ 4 ] ]; + + // deferred.progress(function() { bind to newDefer or newDefer.notify }) + // deferred.done(function() { bind to newDefer or newDefer.resolve }) + // deferred.fail(function() { bind to newDefer or newDefer.reject }) + deferred[ tuple[ 1 ] ]( function() { + var returned = fn && fn.apply( this, arguments ); + if ( returned && isFunction( returned.promise ) ) { + returned.promise() + .progress( newDefer.notify ) + .done( newDefer.resolve ) + .fail( newDefer.reject ); + } else { + newDefer[ tuple[ 0 ] + "With" ]( + this, + fn ? [ returned ] : arguments + ); + } + } ); + } ); + fns = null; + } ).promise(); + }, + then: function( onFulfilled, onRejected, onProgress ) { + var maxDepth = 0; + function resolve( depth, deferred, handler, special ) { + return function() { + var that = this, + args = arguments, + mightThrow = function() { + var returned, then; + + // Support: Promises/A+ section 2.3.3.3.3 + // https://promisesaplus.com/#point-59 + // Ignore double-resolution attempts + if ( depth < maxDepth ) { + return; + } + + returned = handler.apply( that, args ); + + // Support: Promises/A+ section 2.3.1 + // https://promisesaplus.com/#point-48 + if ( returned === deferred.promise() ) { + throw new TypeError( "Thenable self-resolution" ); + } + + // Support: Promises/A+ sections 2.3.3.1, 3.5 + // https://promisesaplus.com/#point-54 + // https://promisesaplus.com/#point-75 + // Retrieve `then` only once + then = returned && + + // Support: Promises/A+ section 2.3.4 + // https://promisesaplus.com/#point-64 + // Only check objects and functions for thenability + ( typeof returned === "object" || + typeof returned === "function" ) && + returned.then; + + // Handle a returned thenable + if ( isFunction( then ) ) { + + // Special processors (notify) just wait for resolution + if ( special ) { + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ) + ); + + // Normal processors (resolve) also hook into progress + } else { + + // ...and disregard older resolution values + maxDepth++; + + then.call( + returned, + resolve( maxDepth, deferred, Identity, special ), + resolve( maxDepth, deferred, Thrower, special ), + resolve( maxDepth, deferred, Identity, + deferred.notifyWith ) + ); + } + + // Handle all other returned values + } else { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Identity ) { + that = undefined; + args = [ returned ]; + } + + // Process the value(s) + // Default process is resolve + ( special || deferred.resolveWith )( that, args ); + } + }, + + // Only normal processors (resolve) catch and reject exceptions + process = special ? + mightThrow : + function() { + try { + mightThrow(); + } catch ( e ) { + + if ( jQuery.Deferred.exceptionHook ) { + jQuery.Deferred.exceptionHook( e, + process.stackTrace ); + } + + // Support: Promises/A+ section 2.3.3.3.4.1 + // https://promisesaplus.com/#point-61 + // Ignore post-resolution exceptions + if ( depth + 1 >= maxDepth ) { + + // Only substitute handlers pass on context + // and multiple values (non-spec behavior) + if ( handler !== Thrower ) { + that = undefined; + args = [ e ]; + } + + deferred.rejectWith( that, args ); + } + } + }; + + // Support: Promises/A+ section 2.3.3.3.1 + // https://promisesaplus.com/#point-57 + // Re-resolve promises immediately to dodge false rejection from + // subsequent errors + if ( depth ) { + process(); + } else { + + // Call an optional hook to record the stack, in case of exception + // since it's otherwise lost when execution goes async + if ( jQuery.Deferred.getStackHook ) { + process.stackTrace = jQuery.Deferred.getStackHook(); + } + window.setTimeout( process ); + } + }; + } + + return jQuery.Deferred( function( newDefer ) { + + // progress_handlers.add( ... ) + tuples[ 0 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onProgress ) ? + onProgress : + Identity, + newDefer.notifyWith + ) + ); + + // fulfilled_handlers.add( ... ) + tuples[ 1 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onFulfilled ) ? + onFulfilled : + Identity + ) + ); + + // rejected_handlers.add( ... ) + tuples[ 2 ][ 3 ].add( + resolve( + 0, + newDefer, + isFunction( onRejected ) ? + onRejected : + Thrower + ) + ); + } ).promise(); + }, + + // Get a promise for this deferred + // If obj is provided, the promise aspect is added to the object + promise: function( obj ) { + return obj != null ? jQuery.extend( obj, promise ) : promise; + } + }, + deferred = {}; + + // Add list-specific methods + jQuery.each( tuples, function( i, tuple ) { + var list = tuple[ 2 ], + stateString = tuple[ 5 ]; + + // promise.progress = list.add + // promise.done = list.add + // promise.fail = list.add + promise[ tuple[ 1 ] ] = list.add; + + // Handle state + if ( stateString ) { + list.add( + function() { + + // state = "resolved" (i.e., fulfilled) + // state = "rejected" + state = stateString; + }, + + // rejected_callbacks.disable + // fulfilled_callbacks.disable + tuples[ 3 - i ][ 2 ].disable, + + // rejected_handlers.disable + // fulfilled_handlers.disable + tuples[ 3 - i ][ 3 ].disable, + + // progress_callbacks.lock + tuples[ 0 ][ 2 ].lock, + + // progress_handlers.lock + tuples[ 0 ][ 3 ].lock + ); + } + + // progress_handlers.fire + // fulfilled_handlers.fire + // rejected_handlers.fire + list.add( tuple[ 3 ].fire ); + + // deferred.notify = function() { deferred.notifyWith(...) } + // deferred.resolve = function() { deferred.resolveWith(...) } + // deferred.reject = function() { deferred.rejectWith(...) } + deferred[ tuple[ 0 ] ] = function() { + deferred[ tuple[ 0 ] + "With" ]( this === deferred ? undefined : this, arguments ); + return this; + }; + + // deferred.notifyWith = list.fireWith + // deferred.resolveWith = list.fireWith + // deferred.rejectWith = list.fireWith + deferred[ tuple[ 0 ] + "With" ] = list.fireWith; + } ); + + // Make the deferred a promise + promise.promise( deferred ); + + // Call given func if any + if ( func ) { + func.call( deferred, deferred ); + } + + // All done! + return deferred; + }, + + // Deferred helper + when: function( singleValue ) { + var + + // count of uncompleted subordinates + remaining = arguments.length, + + // count of unprocessed arguments + i = remaining, + + // subordinate fulfillment data + resolveContexts = Array( i ), + resolveValues = slice.call( arguments ), + + // the master Deferred + master = jQuery.Deferred(), + + // subordinate callback factory + updateFunc = function( i ) { + return function( value ) { + resolveContexts[ i ] = this; + resolveValues[ i ] = arguments.length > 1 ? slice.call( arguments ) : value; + if ( !( --remaining ) ) { + master.resolveWith( resolveContexts, resolveValues ); + } + }; + }; + + // Single- and empty arguments are adopted like Promise.resolve + if ( remaining <= 1 ) { + adoptValue( singleValue, master.done( updateFunc( i ) ).resolve, master.reject, + !remaining ); + + // Use .then() to unwrap secondary thenables (cf. gh-3000) + if ( master.state() === "pending" || + isFunction( resolveValues[ i ] && resolveValues[ i ].then ) ) { + + return master.then(); + } + } + + // Multiple arguments are aggregated like Promise.all array elements + while ( i-- ) { + adoptValue( resolveValues[ i ], updateFunc( i ), master.reject ); + } + + return master.promise(); + } +} ); + + +// These usually indicate a programmer mistake during development, +// warn about them ASAP rather than swallowing them by default. +var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/; + +jQuery.Deferred.exceptionHook = function( error, stack ) { + + // Support: IE 8 - 9 only + // Console exists when dev tools are open, which can happen at any time + if ( window.console && window.console.warn && error && rerrorNames.test( error.name ) ) { + window.console.warn( "jQuery.Deferred exception: " + error.message, error.stack, stack ); + } +}; + + + + +jQuery.readyException = function( error ) { + window.setTimeout( function() { + throw error; + } ); +}; + + + + +// The deferred used on DOM ready +var readyList = jQuery.Deferred(); + +jQuery.fn.ready = function( fn ) { + + readyList + .then( fn ) + + // Wrap jQuery.readyException in a function so that the lookup + // happens at the time of error handling instead of callback + // registration. + .catch( function( error ) { + jQuery.readyException( error ); + } ); + + return this; +}; + +jQuery.extend( { + + // Is the DOM ready to be used? Set to true once it occurs. + isReady: false, + + // A counter to track how many items to wait for before + // the ready event fires. See #6781 + readyWait: 1, + + // Handle when the DOM is ready + ready: function( wait ) { + + // Abort if there are pending holds or we're already ready + if ( wait === true ? --jQuery.readyWait : jQuery.isReady ) { + return; + } + + // Remember that the DOM is ready + jQuery.isReady = true; + + // If a normal DOM Ready event fired, decrement, and wait if need be + if ( wait !== true && --jQuery.readyWait > 0 ) { + return; + } + + // If there are functions bound, to execute + readyList.resolveWith( document, [ jQuery ] ); + } +} ); + +jQuery.ready.then = readyList.then; + +// The ready event handler and self cleanup method +function completed() { + document.removeEventListener( "DOMContentLoaded", completed ); + window.removeEventListener( "load", completed ); + jQuery.ready(); +} + +// Catch cases where $(document).ready() is called +// after the browser event has already occurred. +// Support: IE <=9 - 10 only +// Older IE sometimes signals "interactive" too soon +if ( document.readyState === "complete" || + ( document.readyState !== "loading" && !document.documentElement.doScroll ) ) { + + // Handle it asynchronously to allow scripts the opportunity to delay ready + window.setTimeout( jQuery.ready ); + +} else { + + // Use the handy event callback + document.addEventListener( "DOMContentLoaded", completed ); + + // A fallback to window.onload, that will always work + window.addEventListener( "load", completed ); +} + + + + +// Multifunctional method to get and set values of a collection +// The value/s can optionally be executed if it's a function +var access = function( elems, fn, key, value, chainable, emptyGet, raw ) { + var i = 0, + len = elems.length, + bulk = key == null; + + // Sets many values + if ( toType( key ) === "object" ) { + chainable = true; + for ( i in key ) { + access( elems, fn, i, key[ i ], true, emptyGet, raw ); + } + + // Sets one value + } else if ( value !== undefined ) { + chainable = true; + + if ( !isFunction( value ) ) { + raw = true; + } + + if ( bulk ) { + + // Bulk operations run against the entire set + if ( raw ) { + fn.call( elems, value ); + fn = null; + + // ...except when executing function values + } else { + bulk = fn; + fn = function( elem, _key, value ) { + return bulk.call( jQuery( elem ), value ); + }; + } + } + + if ( fn ) { + for ( ; i < len; i++ ) { + fn( + elems[ i ], key, raw ? + value : + value.call( elems[ i ], i, fn( elems[ i ], key ) ) + ); + } + } + } + + if ( chainable ) { + return elems; + } + + // Gets + if ( bulk ) { + return fn.call( elems ); + } + + return len ? fn( elems[ 0 ], key ) : emptyGet; +}; + + +// Matches dashed string for camelizing +var rmsPrefix = /^-ms-/, + rdashAlpha = /-([a-z])/g; + +// Used by camelCase as callback to replace() +function fcamelCase( _all, letter ) { + return letter.toUpperCase(); +} + +// Convert dashed to camelCase; used by the css and data modules +// Support: IE <=9 - 11, Edge 12 - 15 +// Microsoft forgot to hump their vendor prefix (#9572) +function camelCase( string ) { + return string.replace( rmsPrefix, "ms-" ).replace( rdashAlpha, fcamelCase ); +} +var acceptData = function( owner ) { + + // Accepts only: + // - Node + // - Node.ELEMENT_NODE + // - Node.DOCUMENT_NODE + // - Object + // - Any + return owner.nodeType === 1 || owner.nodeType === 9 || !( +owner.nodeType ); +}; + + + + +function Data() { + this.expando = jQuery.expando + Data.uid++; +} + +Data.uid = 1; + +Data.prototype = { + + cache: function( owner ) { + + // Check if the owner object already has a cache + var value = owner[ this.expando ]; + + // If not, create one + if ( !value ) { + value = {}; + + // We can accept data for non-element nodes in modern browsers, + // but we should not, see #8335. + // Always return an empty object. + if ( acceptData( owner ) ) { + + // If it is a node unlikely to be stringify-ed or looped over + // use plain assignment + if ( owner.nodeType ) { + owner[ this.expando ] = value; + + // Otherwise secure it in a non-enumerable property + // configurable must be true to allow the property to be + // deleted when data is removed + } else { + Object.defineProperty( owner, this.expando, { + value: value, + configurable: true + } ); + } + } + } + + return value; + }, + set: function( owner, data, value ) { + var prop, + cache = this.cache( owner ); + + // Handle: [ owner, key, value ] args + // Always use camelCase key (gh-2257) + if ( typeof data === "string" ) { + cache[ camelCase( data ) ] = value; + + // Handle: [ owner, { properties } ] args + } else { + + // Copy the properties one-by-one to the cache object + for ( prop in data ) { + cache[ camelCase( prop ) ] = data[ prop ]; + } + } + return cache; + }, + get: function( owner, key ) { + return key === undefined ? + this.cache( owner ) : + + // Always use camelCase key (gh-2257) + owner[ this.expando ] && owner[ this.expando ][ camelCase( key ) ]; + }, + access: function( owner, key, value ) { + + // In cases where either: + // + // 1. No key was specified + // 2. A string key was specified, but no value provided + // + // Take the "read" path and allow the get method to determine + // which value to return, respectively either: + // + // 1. The entire cache object + // 2. The data stored at the key + // + if ( key === undefined || + ( ( key && typeof key === "string" ) && value === undefined ) ) { + + return this.get( owner, key ); + } + + // When the key is not a string, or both a key and value + // are specified, set or extend (existing objects) with either: + // + // 1. An object of properties + // 2. A key and value + // + this.set( owner, key, value ); + + // Since the "set" path can have two possible entry points + // return the expected data based on which path was taken[*] + return value !== undefined ? value : key; + }, + remove: function( owner, key ) { + var i, + cache = owner[ this.expando ]; + + if ( cache === undefined ) { + return; + } + + if ( key !== undefined ) { + + // Support array or space separated string of keys + if ( Array.isArray( key ) ) { + + // If key is an array of keys... + // We always set camelCase keys, so remove that. + key = key.map( camelCase ); + } else { + key = camelCase( key ); + + // If a key with the spaces exists, use it. + // Otherwise, create an array by matching non-whitespace + key = key in cache ? + [ key ] : + ( key.match( rnothtmlwhite ) || [] ); + } + + i = key.length; + + while ( i-- ) { + delete cache[ key[ i ] ]; + } + } + + // Remove the expando if there's no more data + if ( key === undefined || jQuery.isEmptyObject( cache ) ) { + + // Support: Chrome <=35 - 45 + // Webkit & Blink performance suffers when deleting properties + // from DOM nodes, so set to undefined instead + // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted) + if ( owner.nodeType ) { + owner[ this.expando ] = undefined; + } else { + delete owner[ this.expando ]; + } + } + }, + hasData: function( owner ) { + var cache = owner[ this.expando ]; + return cache !== undefined && !jQuery.isEmptyObject( cache ); + } +}; +var dataPriv = new Data(); + +var dataUser = new Data(); + + + +// Implementation Summary +// +// 1. Enforce API surface and semantic compatibility with 1.9.x branch +// 2. Improve the module's maintainability by reducing the storage +// paths to a single mechanism. +// 3. Use the same single mechanism to support "private" and "user" data. +// 4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData) +// 5. Avoid exposing implementation details on user objects (eg. expando properties) +// 6. Provide a clear path for implementation upgrade to WeakMap in 2014 + +var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/, + rmultiDash = /[A-Z]/g; + +function getData( data ) { + if ( data === "true" ) { + return true; + } + + if ( data === "false" ) { + return false; + } + + if ( data === "null" ) { + return null; + } + + // Only convert to a number if it doesn't change the string + if ( data === +data + "" ) { + return +data; + } + + if ( rbrace.test( data ) ) { + return JSON.parse( data ); + } + + return data; +} + +function dataAttr( elem, key, data ) { + var name; + + // If nothing was found internally, try to fetch any + // data from the HTML5 data-* attribute + if ( data === undefined && elem.nodeType === 1 ) { + name = "data-" + key.replace( rmultiDash, "-$&" ).toLowerCase(); + data = elem.getAttribute( name ); + + if ( typeof data === "string" ) { + try { + data = getData( data ); + } catch ( e ) {} + + // Make sure we set the data so it isn't changed later + dataUser.set( elem, key, data ); + } else { + data = undefined; + } + } + return data; +} + +jQuery.extend( { + hasData: function( elem ) { + return dataUser.hasData( elem ) || dataPriv.hasData( elem ); + }, + + data: function( elem, name, data ) { + return dataUser.access( elem, name, data ); + }, + + removeData: function( elem, name ) { + dataUser.remove( elem, name ); + }, + + // TODO: Now that all calls to _data and _removeData have been replaced + // with direct calls to dataPriv methods, these can be deprecated. + _data: function( elem, name, data ) { + return dataPriv.access( elem, name, data ); + }, + + _removeData: function( elem, name ) { + dataPriv.remove( elem, name ); + } +} ); + +jQuery.fn.extend( { + data: function( key, value ) { + var i, name, data, + elem = this[ 0 ], + attrs = elem && elem.attributes; + + // Gets all values + if ( key === undefined ) { + if ( this.length ) { + data = dataUser.get( elem ); + + if ( elem.nodeType === 1 && !dataPriv.get( elem, "hasDataAttrs" ) ) { + i = attrs.length; + while ( i-- ) { + + // Support: IE 11 only + // The attrs elements can be null (#14894) + if ( attrs[ i ] ) { + name = attrs[ i ].name; + if ( name.indexOf( "data-" ) === 0 ) { + name = camelCase( name.slice( 5 ) ); + dataAttr( elem, name, data[ name ] ); + } + } + } + dataPriv.set( elem, "hasDataAttrs", true ); + } + } + + return data; + } + + // Sets multiple values + if ( typeof key === "object" ) { + return this.each( function() { + dataUser.set( this, key ); + } ); + } + + return access( this, function( value ) { + var data; + + // The calling jQuery object (element matches) is not empty + // (and therefore has an element appears at this[ 0 ]) and the + // `value` parameter was not undefined. An empty jQuery object + // will result in `undefined` for elem = this[ 0 ] which will + // throw an exception if an attempt to read a data cache is made. + if ( elem && value === undefined ) { + + // Attempt to get data from the cache + // The key will always be camelCased in Data + data = dataUser.get( elem, key ); + if ( data !== undefined ) { + return data; + } + + // Attempt to "discover" the data in + // HTML5 custom data-* attrs + data = dataAttr( elem, key ); + if ( data !== undefined ) { + return data; + } + + // We tried really hard, but the data doesn't exist. + return; + } + + // Set the data... + this.each( function() { + + // We always store the camelCased key + dataUser.set( this, key, value ); + } ); + }, null, value, arguments.length > 1, null, true ); + }, + + removeData: function( key ) { + return this.each( function() { + dataUser.remove( this, key ); + } ); + } +} ); + + +jQuery.extend( { + queue: function( elem, type, data ) { + var queue; + + if ( elem ) { + type = ( type || "fx" ) + "queue"; + queue = dataPriv.get( elem, type ); + + // Speed up dequeue by getting out quickly if this is just a lookup + if ( data ) { + if ( !queue || Array.isArray( data ) ) { + queue = dataPriv.access( elem, type, jQuery.makeArray( data ) ); + } else { + queue.push( data ); + } + } + return queue || []; + } + }, + + dequeue: function( elem, type ) { + type = type || "fx"; + + var queue = jQuery.queue( elem, type ), + startLength = queue.length, + fn = queue.shift(), + hooks = jQuery._queueHooks( elem, type ), + next = function() { + jQuery.dequeue( elem, type ); + }; + + // If the fx queue is dequeued, always remove the progress sentinel + if ( fn === "inprogress" ) { + fn = queue.shift(); + startLength--; + } + + if ( fn ) { + + // Add a progress sentinel to prevent the fx queue from being + // automatically dequeued + if ( type === "fx" ) { + queue.unshift( "inprogress" ); + } + + // Clear up the last queue stop function + delete hooks.stop; + fn.call( elem, next, hooks ); + } + + if ( !startLength && hooks ) { + hooks.empty.fire(); + } + }, + + // Not public - generate a queueHooks object, or return the current one + _queueHooks: function( elem, type ) { + var key = type + "queueHooks"; + return dataPriv.get( elem, key ) || dataPriv.access( elem, key, { + empty: jQuery.Callbacks( "once memory" ).add( function() { + dataPriv.remove( elem, [ type + "queue", key ] ); + } ) + } ); + } +} ); + +jQuery.fn.extend( { + queue: function( type, data ) { + var setter = 2; + + if ( typeof type !== "string" ) { + data = type; + type = "fx"; + setter--; + } + + if ( arguments.length < setter ) { + return jQuery.queue( this[ 0 ], type ); + } + + return data === undefined ? + this : + this.each( function() { + var queue = jQuery.queue( this, type, data ); + + // Ensure a hooks for this queue + jQuery._queueHooks( this, type ); + + if ( type === "fx" && queue[ 0 ] !== "inprogress" ) { + jQuery.dequeue( this, type ); + } + } ); + }, + dequeue: function( type ) { + return this.each( function() { + jQuery.dequeue( this, type ); + } ); + }, + clearQueue: function( type ) { + return this.queue( type || "fx", [] ); + }, + + // Get a promise resolved when queues of a certain type + // are emptied (fx is the type by default) + promise: function( type, obj ) { + var tmp, + count = 1, + defer = jQuery.Deferred(), + elements = this, + i = this.length, + resolve = function() { + if ( !( --count ) ) { + defer.resolveWith( elements, [ elements ] ); + } + }; + + if ( typeof type !== "string" ) { + obj = type; + type = undefined; + } + type = type || "fx"; + + while ( i-- ) { + tmp = dataPriv.get( elements[ i ], type + "queueHooks" ); + if ( tmp && tmp.empty ) { + count++; + tmp.empty.add( resolve ); + } + } + resolve(); + return defer.promise( obj ); + } +} ); +var pnum = ( /[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/ ).source; + +var rcssNum = new RegExp( "^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i" ); + + +var cssExpand = [ "Top", "Right", "Bottom", "Left" ]; + +var documentElement = document.documentElement; + + + + var isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ); + }, + composed = { composed: true }; + + // Support: IE 9 - 11+, Edge 12 - 18+, iOS 10.0 - 10.2 only + // Check attachment across shadow DOM boundaries when possible (gh-3504) + // Support: iOS 10.0-10.2 only + // Early iOS 10 versions support `attachShadow` but not `getRootNode`, + // leading to errors. We need to check for `getRootNode`. + if ( documentElement.getRootNode ) { + isAttached = function( elem ) { + return jQuery.contains( elem.ownerDocument, elem ) || + elem.getRootNode( composed ) === elem.ownerDocument; + }; + } +var isHiddenWithinTree = function( elem, el ) { + + // isHiddenWithinTree might be called from jQuery#filter function; + // in that case, element will be second argument + elem = el || elem; + + // Inline style trumps all + return elem.style.display === "none" || + elem.style.display === "" && + + // Otherwise, check computed style + // Support: Firefox <=43 - 45 + // Disconnected elements can have computed display: none, so first confirm that elem is + // in the document. + isAttached( elem ) && + + jQuery.css( elem, "display" ) === "none"; + }; + + + +function adjustCSS( elem, prop, valueParts, tween ) { + var adjusted, scale, + maxIterations = 20, + currentValue = tween ? + function() { + return tween.cur(); + } : + function() { + return jQuery.css( elem, prop, "" ); + }, + initial = currentValue(), + unit = valueParts && valueParts[ 3 ] || ( jQuery.cssNumber[ prop ] ? "" : "px" ), + + // Starting value computation is required for potential unit mismatches + initialInUnit = elem.nodeType && + ( jQuery.cssNumber[ prop ] || unit !== "px" && +initial ) && + rcssNum.exec( jQuery.css( elem, prop ) ); + + if ( initialInUnit && initialInUnit[ 3 ] !== unit ) { + + // Support: Firefox <=54 + // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144) + initial = initial / 2; + + // Trust units reported by jQuery.css + unit = unit || initialInUnit[ 3 ]; + + // Iteratively approximate from a nonzero starting point + initialInUnit = +initial || 1; + + while ( maxIterations-- ) { + + // Evaluate and update our best guess (doubling guesses that zero out). + // Finish if the scale equals or crosses 1 (making the old*new product non-positive). + jQuery.style( elem, prop, initialInUnit + unit ); + if ( ( 1 - scale ) * ( 1 - ( scale = currentValue() / initial || 0.5 ) ) <= 0 ) { + maxIterations = 0; + } + initialInUnit = initialInUnit / scale; + + } + + initialInUnit = initialInUnit * 2; + jQuery.style( elem, prop, initialInUnit + unit ); + + // Make sure we update the tween properties later on + valueParts = valueParts || []; + } + + if ( valueParts ) { + initialInUnit = +initialInUnit || +initial || 0; + + // Apply relative offset (+=/-=) if specified + adjusted = valueParts[ 1 ] ? + initialInUnit + ( valueParts[ 1 ] + 1 ) * valueParts[ 2 ] : + +valueParts[ 2 ]; + if ( tween ) { + tween.unit = unit; + tween.start = initialInUnit; + tween.end = adjusted; + } + } + return adjusted; +} + + +var defaultDisplayMap = {}; + +function getDefaultDisplay( elem ) { + var temp, + doc = elem.ownerDocument, + nodeName = elem.nodeName, + display = defaultDisplayMap[ nodeName ]; + + if ( display ) { + return display; + } + + temp = doc.body.appendChild( doc.createElement( nodeName ) ); + display = jQuery.css( temp, "display" ); + + temp.parentNode.removeChild( temp ); + + if ( display === "none" ) { + display = "block"; + } + defaultDisplayMap[ nodeName ] = display; + + return display; +} + +function showHide( elements, show ) { + var display, elem, + values = [], + index = 0, + length = elements.length; + + // Determine new display value for elements that need to change + for ( ; index < length; index++ ) { + elem = elements[ index ]; + if ( !elem.style ) { + continue; + } + + display = elem.style.display; + if ( show ) { + + // Since we force visibility upon cascade-hidden elements, an immediate (and slow) + // check is required in this first loop unless we have a nonempty display value (either + // inline or about-to-be-restored) + if ( display === "none" ) { + values[ index ] = dataPriv.get( elem, "display" ) || null; + if ( !values[ index ] ) { + elem.style.display = ""; + } + } + if ( elem.style.display === "" && isHiddenWithinTree( elem ) ) { + values[ index ] = getDefaultDisplay( elem ); + } + } else { + if ( display !== "none" ) { + values[ index ] = "none"; + + // Remember what we're overwriting + dataPriv.set( elem, "display", display ); + } + } + } + + // Set the display of the elements in a second loop to avoid constant reflow + for ( index = 0; index < length; index++ ) { + if ( values[ index ] != null ) { + elements[ index ].style.display = values[ index ]; + } + } + + return elements; +} + +jQuery.fn.extend( { + show: function() { + return showHide( this, true ); + }, + hide: function() { + return showHide( this ); + }, + toggle: function( state ) { + if ( typeof state === "boolean" ) { + return state ? this.show() : this.hide(); + } + + return this.each( function() { + if ( isHiddenWithinTree( this ) ) { + jQuery( this ).show(); + } else { + jQuery( this ).hide(); + } + } ); + } +} ); +var rcheckableType = ( /^(?:checkbox|radio)$/i ); + +var rtagName = ( /<([a-z][^\/\0>\x20\t\r\n\f]*)/i ); + +var rscriptType = ( /^$|^module$|\/(?:java|ecma)script/i ); + + + +( function() { + var fragment = document.createDocumentFragment(), + div = fragment.appendChild( document.createElement( "div" ) ), + input = document.createElement( "input" ); + + // Support: Android 4.0 - 4.3 only + // Check state lost if the name is set (#11217) + // Support: Windows Web Apps (WWA) + // `name` and `type` must use .setAttribute for WWA (#14901) + input.setAttribute( "type", "radio" ); + input.setAttribute( "checked", "checked" ); + input.setAttribute( "name", "t" ); + + div.appendChild( input ); + + // Support: Android <=4.1 only + // Older WebKit doesn't clone checked state correctly in fragments + support.checkClone = div.cloneNode( true ).cloneNode( true ).lastChild.checked; + + // Support: IE <=11 only + // Make sure textarea (and checkbox) defaultValue is properly cloned + div.innerHTML = ""; + support.noCloneChecked = !!div.cloneNode( true ).lastChild.defaultValue; + + // Support: IE <=9 only + // IE <=9 replaces "; + support.option = !!div.lastChild; +} )(); + + +// We have to close these tags to support XHTML (#13200) +var wrapMap = { + + // XHTML parsers do not magically insert elements in the + // same way that tag soup parsers do. So we cannot shorten + // this by omitting
or other required elements. + thead: [ 1, "
", "
" ], + col: [ 2, "", "
" ], + tr: [ 2, "", "
" ], + td: [ 3, "", "
" ], + + _default: [ 0, "", "" ] +}; + +wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead; +wrapMap.th = wrapMap.td; + +// Support: IE <=9 only +if ( !support.option ) { + wrapMap.optgroup = wrapMap.option = [ 1, "" ]; +} + + +function getAll( context, tag ) { + + // Support: IE <=9 - 11 only + // Use typeof to avoid zero-argument method invocation on host objects (#15151) + var ret; + + if ( typeof context.getElementsByTagName !== "undefined" ) { + ret = context.getElementsByTagName( tag || "*" ); + + } else if ( typeof context.querySelectorAll !== "undefined" ) { + ret = context.querySelectorAll( tag || "*" ); + + } else { + ret = []; + } + + if ( tag === undefined || tag && nodeName( context, tag ) ) { + return jQuery.merge( [ context ], ret ); + } + + return ret; +} + + +// Mark scripts as having already been evaluated +function setGlobalEval( elems, refElements ) { + var i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + dataPriv.set( + elems[ i ], + "globalEval", + !refElements || dataPriv.get( refElements[ i ], "globalEval" ) + ); + } +} + + +var rhtml = /<|&#?\w+;/; + +function buildFragment( elems, context, scripts, selection, ignored ) { + var elem, tmp, tag, wrap, attached, j, + fragment = context.createDocumentFragment(), + nodes = [], + i = 0, + l = elems.length; + + for ( ; i < l; i++ ) { + elem = elems[ i ]; + + if ( elem || elem === 0 ) { + + // Add nodes directly + if ( toType( elem ) === "object" ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, elem.nodeType ? [ elem ] : elem ); + + // Convert non-html into a text node + } else if ( !rhtml.test( elem ) ) { + nodes.push( context.createTextNode( elem ) ); + + // Convert html into DOM nodes + } else { + tmp = tmp || fragment.appendChild( context.createElement( "div" ) ); + + // Deserialize a standard representation + tag = ( rtagName.exec( elem ) || [ "", "" ] )[ 1 ].toLowerCase(); + wrap = wrapMap[ tag ] || wrapMap._default; + tmp.innerHTML = wrap[ 1 ] + jQuery.htmlPrefilter( elem ) + wrap[ 2 ]; + + // Descend through wrappers to the right content + j = wrap[ 0 ]; + while ( j-- ) { + tmp = tmp.lastChild; + } + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( nodes, tmp.childNodes ); + + // Remember the top-level container + tmp = fragment.firstChild; + + // Ensure the created nodes are orphaned (#12392) + tmp.textContent = ""; + } + } + } + + // Remove wrapper from fragment + fragment.textContent = ""; + + i = 0; + while ( ( elem = nodes[ i++ ] ) ) { + + // Skip elements already in the context collection (trac-4087) + if ( selection && jQuery.inArray( elem, selection ) > -1 ) { + if ( ignored ) { + ignored.push( elem ); + } + continue; + } + + attached = isAttached( elem ); + + // Append to fragment + tmp = getAll( fragment.appendChild( elem ), "script" ); + + // Preserve script evaluation history + if ( attached ) { + setGlobalEval( tmp ); + } + + // Capture executables + if ( scripts ) { + j = 0; + while ( ( elem = tmp[ j++ ] ) ) { + if ( rscriptType.test( elem.type || "" ) ) { + scripts.push( elem ); + } + } + } + } + + return fragment; +} + + +var + rkeyEvent = /^key/, + rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/, + rtypenamespace = /^([^.]*)(?:\.(.+)|)/; + +function returnTrue() { + return true; +} + +function returnFalse() { + return false; +} + +// Support: IE <=9 - 11+ +// focus() and blur() are asynchronous, except when they are no-op. +// So expect focus to be synchronous when the element is already active, +// and blur to be synchronous when the element is not already active. +// (focus and blur are always synchronous in other supported browsers, +// this just defines when we can count on it). +function expectSync( elem, type ) { + return ( elem === safeActiveElement() ) === ( type === "focus" ); +} + +// Support: IE <=9 only +// Accessing document.activeElement can throw unexpectedly +// https://bugs.jquery.com/ticket/13393 +function safeActiveElement() { + try { + return document.activeElement; + } catch ( err ) { } +} + +function on( elem, types, selector, data, fn, one ) { + var origFn, type; + + // Types can be a map of types/handlers + if ( typeof types === "object" ) { + + // ( types-Object, selector, data ) + if ( typeof selector !== "string" ) { + + // ( types-Object, data ) + data = data || selector; + selector = undefined; + } + for ( type in types ) { + on( elem, type, selector, data, types[ type ], one ); + } + return elem; + } + + if ( data == null && fn == null ) { + + // ( types, fn ) + fn = selector; + data = selector = undefined; + } else if ( fn == null ) { + if ( typeof selector === "string" ) { + + // ( types, selector, fn ) + fn = data; + data = undefined; + } else { + + // ( types, data, fn ) + fn = data; + data = selector; + selector = undefined; + } + } + if ( fn === false ) { + fn = returnFalse; + } else if ( !fn ) { + return elem; + } + + if ( one === 1 ) { + origFn = fn; + fn = function( event ) { + + // Can use an empty set, since event contains the info + jQuery().off( event ); + return origFn.apply( this, arguments ); + }; + + // Use same guid so caller can remove using origFn + fn.guid = origFn.guid || ( origFn.guid = jQuery.guid++ ); + } + return elem.each( function() { + jQuery.event.add( this, types, fn, data, selector ); + } ); +} + +/* + * Helper functions for managing events -- not part of the public interface. + * Props to Dean Edwards' addEvent library for many of the ideas. + */ +jQuery.event = { + + global: {}, + + add: function( elem, types, handler, data, selector ) { + + var handleObjIn, eventHandle, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.get( elem ); + + // Only attach events to objects that accept data + if ( !acceptData( elem ) ) { + return; + } + + // Caller can pass in an object of custom data in lieu of the handler + if ( handler.handler ) { + handleObjIn = handler; + handler = handleObjIn.handler; + selector = handleObjIn.selector; + } + + // Ensure that invalid selectors throw exceptions at attach time + // Evaluate against documentElement in case elem is a non-element node (e.g., document) + if ( selector ) { + jQuery.find.matchesSelector( documentElement, selector ); + } + + // Make sure that the handler has a unique ID, used to find/remove it later + if ( !handler.guid ) { + handler.guid = jQuery.guid++; + } + + // Init the element's event structure and main handler, if this is the first + if ( !( events = elemData.events ) ) { + events = elemData.events = Object.create( null ); + } + if ( !( eventHandle = elemData.handle ) ) { + eventHandle = elemData.handle = function( e ) { + + // Discard the second event of a jQuery.event.trigger() and + // when an event is called after a page has unloaded + return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ? + jQuery.event.dispatch.apply( elem, arguments ) : undefined; + }; + } + + // Handle multiple events separated by a space + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // There *must* be a type, no attaching namespace-only handlers + if ( !type ) { + continue; + } + + // If event changes its type, use the special event handlers for the changed type + special = jQuery.event.special[ type ] || {}; + + // If selector defined, determine special event api type, otherwise given type + type = ( selector ? special.delegateType : special.bindType ) || type; + + // Update special based on newly reset type + special = jQuery.event.special[ type ] || {}; + + // handleObj is passed to all event handlers + handleObj = jQuery.extend( { + type: type, + origType: origType, + data: data, + handler: handler, + guid: handler.guid, + selector: selector, + needsContext: selector && jQuery.expr.match.needsContext.test( selector ), + namespace: namespaces.join( "." ) + }, handleObjIn ); + + // Init the event handler queue if we're the first + if ( !( handlers = events[ type ] ) ) { + handlers = events[ type ] = []; + handlers.delegateCount = 0; + + // Only use addEventListener if the special events handler returns false + if ( !special.setup || + special.setup.call( elem, data, namespaces, eventHandle ) === false ) { + + if ( elem.addEventListener ) { + elem.addEventListener( type, eventHandle ); + } + } + } + + if ( special.add ) { + special.add.call( elem, handleObj ); + + if ( !handleObj.handler.guid ) { + handleObj.handler.guid = handler.guid; + } + } + + // Add to the element's handler list, delegates in front + if ( selector ) { + handlers.splice( handlers.delegateCount++, 0, handleObj ); + } else { + handlers.push( handleObj ); + } + + // Keep track of which events have ever been used, for event optimization + jQuery.event.global[ type ] = true; + } + + }, + + // Detach an event or set of events from an element + remove: function( elem, types, handler, selector, mappedTypes ) { + + var j, origCount, tmp, + events, t, handleObj, + special, handlers, type, namespaces, origType, + elemData = dataPriv.hasData( elem ) && dataPriv.get( elem ); + + if ( !elemData || !( events = elemData.events ) ) { + return; + } + + // Once for each type.namespace in types; type may be omitted + types = ( types || "" ).match( rnothtmlwhite ) || [ "" ]; + t = types.length; + while ( t-- ) { + tmp = rtypenamespace.exec( types[ t ] ) || []; + type = origType = tmp[ 1 ]; + namespaces = ( tmp[ 2 ] || "" ).split( "." ).sort(); + + // Unbind all events (on this namespace, if provided) for the element + if ( !type ) { + for ( type in events ) { + jQuery.event.remove( elem, type + types[ t ], handler, selector, true ); + } + continue; + } + + special = jQuery.event.special[ type ] || {}; + type = ( selector ? special.delegateType : special.bindType ) || type; + handlers = events[ type ] || []; + tmp = tmp[ 2 ] && + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ); + + // Remove matching events + origCount = j = handlers.length; + while ( j-- ) { + handleObj = handlers[ j ]; + + if ( ( mappedTypes || origType === handleObj.origType ) && + ( !handler || handler.guid === handleObj.guid ) && + ( !tmp || tmp.test( handleObj.namespace ) ) && + ( !selector || selector === handleObj.selector || + selector === "**" && handleObj.selector ) ) { + handlers.splice( j, 1 ); + + if ( handleObj.selector ) { + handlers.delegateCount--; + } + if ( special.remove ) { + special.remove.call( elem, handleObj ); + } + } + } + + // Remove generic event handler if we removed something and no more handlers exist + // (avoids potential for endless recursion during removal of special event handlers) + if ( origCount && !handlers.length ) { + if ( !special.teardown || + special.teardown.call( elem, namespaces, elemData.handle ) === false ) { + + jQuery.removeEvent( elem, type, elemData.handle ); + } + + delete events[ type ]; + } + } + + // Remove data and the expando if it's no longer used + if ( jQuery.isEmptyObject( events ) ) { + dataPriv.remove( elem, "handle events" ); + } + }, + + dispatch: function( nativeEvent ) { + + var i, j, ret, matched, handleObj, handlerQueue, + args = new Array( arguments.length ), + + // Make a writable jQuery.Event from the native event object + event = jQuery.event.fix( nativeEvent ), + + handlers = ( + dataPriv.get( this, "events" ) || Object.create( null ) + )[ event.type ] || [], + special = jQuery.event.special[ event.type ] || {}; + + // Use the fix-ed jQuery.Event rather than the (read-only) native event + args[ 0 ] = event; + + for ( i = 1; i < arguments.length; i++ ) { + args[ i ] = arguments[ i ]; + } + + event.delegateTarget = this; + + // Call the preDispatch hook for the mapped type, and let it bail if desired + if ( special.preDispatch && special.preDispatch.call( this, event ) === false ) { + return; + } + + // Determine handlers + handlerQueue = jQuery.event.handlers.call( this, event, handlers ); + + // Run delegates first; they may want to stop propagation beneath us + i = 0; + while ( ( matched = handlerQueue[ i++ ] ) && !event.isPropagationStopped() ) { + event.currentTarget = matched.elem; + + j = 0; + while ( ( handleObj = matched.handlers[ j++ ] ) && + !event.isImmediatePropagationStopped() ) { + + // If the event is namespaced, then each handler is only invoked if it is + // specially universal or its namespaces are a superset of the event's. + if ( !event.rnamespace || handleObj.namespace === false || + event.rnamespace.test( handleObj.namespace ) ) { + + event.handleObj = handleObj; + event.data = handleObj.data; + + ret = ( ( jQuery.event.special[ handleObj.origType ] || {} ).handle || + handleObj.handler ).apply( matched.elem, args ); + + if ( ret !== undefined ) { + if ( ( event.result = ret ) === false ) { + event.preventDefault(); + event.stopPropagation(); + } + } + } + } + } + + // Call the postDispatch hook for the mapped type + if ( special.postDispatch ) { + special.postDispatch.call( this, event ); + } + + return event.result; + }, + + handlers: function( event, handlers ) { + var i, handleObj, sel, matchedHandlers, matchedSelectors, + handlerQueue = [], + delegateCount = handlers.delegateCount, + cur = event.target; + + // Find delegate handlers + if ( delegateCount && + + // Support: IE <=9 + // Black-hole SVG instance trees (trac-13180) + cur.nodeType && + + // Support: Firefox <=42 + // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861) + // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click + // Support: IE 11 only + // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343) + !( event.type === "click" && event.button >= 1 ) ) { + + for ( ; cur !== this; cur = cur.parentNode || this ) { + + // Don't check non-elements (#13208) + // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764) + if ( cur.nodeType === 1 && !( event.type === "click" && cur.disabled === true ) ) { + matchedHandlers = []; + matchedSelectors = {}; + for ( i = 0; i < delegateCount; i++ ) { + handleObj = handlers[ i ]; + + // Don't conflict with Object.prototype properties (#13203) + sel = handleObj.selector + " "; + + if ( matchedSelectors[ sel ] === undefined ) { + matchedSelectors[ sel ] = handleObj.needsContext ? + jQuery( sel, this ).index( cur ) > -1 : + jQuery.find( sel, this, null, [ cur ] ).length; + } + if ( matchedSelectors[ sel ] ) { + matchedHandlers.push( handleObj ); + } + } + if ( matchedHandlers.length ) { + handlerQueue.push( { elem: cur, handlers: matchedHandlers } ); + } + } + } + } + + // Add the remaining (directly-bound) handlers + cur = this; + if ( delegateCount < handlers.length ) { + handlerQueue.push( { elem: cur, handlers: handlers.slice( delegateCount ) } ); + } + + return handlerQueue; + }, + + addProp: function( name, hook ) { + Object.defineProperty( jQuery.Event.prototype, name, { + enumerable: true, + configurable: true, + + get: isFunction( hook ) ? + function() { + if ( this.originalEvent ) { + return hook( this.originalEvent ); + } + } : + function() { + if ( this.originalEvent ) { + return this.originalEvent[ name ]; + } + }, + + set: function( value ) { + Object.defineProperty( this, name, { + enumerable: true, + configurable: true, + writable: true, + value: value + } ); + } + } ); + }, + + fix: function( originalEvent ) { + return originalEvent[ jQuery.expando ] ? + originalEvent : + new jQuery.Event( originalEvent ); + }, + + special: { + load: { + + // Prevent triggered image.load events from bubbling to window.load + noBubble: true + }, + click: { + + // Utilize native event to ensure correct state for checkable inputs + setup: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Claim the first handler + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + // dataPriv.set( el, "click", ... ) + leverageNative( el, "click", returnTrue ); + } + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function( data ) { + + // For mutual compressibility with _default, replace `this` access with a local var. + // `|| data` is dead code meant only to preserve the variable through minification. + var el = this || data; + + // Force setup before triggering a click + if ( rcheckableType.test( el.type ) && + el.click && nodeName( el, "input" ) ) { + + leverageNative( el, "click" ); + } + + // Return non-false to allow normal event-path propagation + return true; + }, + + // For cross-browser consistency, suppress native .click() on links + // Also prevent it if we're currently inside a leveraged native-event stack + _default: function( event ) { + var target = event.target; + return rcheckableType.test( target.type ) && + target.click && nodeName( target, "input" ) && + dataPriv.get( target, "click" ) || + nodeName( target, "a" ); + } + }, + + beforeunload: { + postDispatch: function( event ) { + + // Support: Firefox 20+ + // Firefox doesn't alert if the returnValue field is not set. + if ( event.result !== undefined && event.originalEvent ) { + event.originalEvent.returnValue = event.result; + } + } + } + } +}; + +// Ensure the presence of an event listener that handles manually-triggered +// synthetic events by interrupting progress until reinvoked in response to +// *native* events that it fires directly, ensuring that state changes have +// already occurred before other listeners are invoked. +function leverageNative( el, type, expectSync ) { + + // Missing expectSync indicates a trigger call, which must force setup through jQuery.event.add + if ( !expectSync ) { + if ( dataPriv.get( el, type ) === undefined ) { + jQuery.event.add( el, type, returnTrue ); + } + return; + } + + // Register the controller as a special universal handler for all event namespaces + dataPriv.set( el, type, false ); + jQuery.event.add( el, type, { + namespace: false, + handler: function( event ) { + var notAsync, result, + saved = dataPriv.get( this, type ); + + if ( ( event.isTrigger & 1 ) && this[ type ] ) { + + // Interrupt processing of the outer synthetic .trigger()ed event + // Saved data should be false in such cases, but might be a leftover capture object + // from an async native handler (gh-4350) + if ( !saved.length ) { + + // Store arguments for use when handling the inner native event + // There will always be at least one argument (an event object), so this array + // will not be confused with a leftover capture object. + saved = slice.call( arguments ); + dataPriv.set( this, type, saved ); + + // Trigger the native event and capture its result + // Support: IE <=9 - 11+ + // focus() and blur() are asynchronous + notAsync = expectSync( this, type ); + this[ type ](); + result = dataPriv.get( this, type ); + if ( saved !== result || notAsync ) { + dataPriv.set( this, type, false ); + } else { + result = {}; + } + if ( saved !== result ) { + + // Cancel the outer synthetic event + event.stopImmediatePropagation(); + event.preventDefault(); + return result.value; + } + + // If this is an inner synthetic event for an event with a bubbling surrogate + // (focus or blur), assume that the surrogate already propagated from triggering the + // native event and prevent that from happening again here. + // This technically gets the ordering wrong w.r.t. to `.trigger()` (in which the + // bubbling surrogate propagates *after* the non-bubbling base), but that seems + // less bad than duplication. + } else if ( ( jQuery.event.special[ type ] || {} ).delegateType ) { + event.stopPropagation(); + } + + // If this is a native event triggered above, everything is now in order + // Fire an inner synthetic event with the original arguments + } else if ( saved.length ) { + + // ...and capture the result + dataPriv.set( this, type, { + value: jQuery.event.trigger( + + // Support: IE <=9 - 11+ + // Extend with the prototype to reset the above stopImmediatePropagation() + jQuery.extend( saved[ 0 ], jQuery.Event.prototype ), + saved.slice( 1 ), + this + ) + } ); + + // Abort handling of the native event + event.stopImmediatePropagation(); + } + } + } ); +} + +jQuery.removeEvent = function( elem, type, handle ) { + + // This "if" is needed for plain objects + if ( elem.removeEventListener ) { + elem.removeEventListener( type, handle ); + } +}; + +jQuery.Event = function( src, props ) { + + // Allow instantiation without the 'new' keyword + if ( !( this instanceof jQuery.Event ) ) { + return new jQuery.Event( src, props ); + } + + // Event object + if ( src && src.type ) { + this.originalEvent = src; + this.type = src.type; + + // Events bubbling up the document may have been marked as prevented + // by a handler lower down the tree; reflect the correct value. + this.isDefaultPrevented = src.defaultPrevented || + src.defaultPrevented === undefined && + + // Support: Android <=2.3 only + src.returnValue === false ? + returnTrue : + returnFalse; + + // Create target properties + // Support: Safari <=6 - 7 only + // Target should not be a text node (#504, #13143) + this.target = ( src.target && src.target.nodeType === 3 ) ? + src.target.parentNode : + src.target; + + this.currentTarget = src.currentTarget; + this.relatedTarget = src.relatedTarget; + + // Event type + } else { + this.type = src; + } + + // Put explicitly provided properties onto the event object + if ( props ) { + jQuery.extend( this, props ); + } + + // Create a timestamp if incoming event doesn't have one + this.timeStamp = src && src.timeStamp || Date.now(); + + // Mark it as fixed + this[ jQuery.expando ] = true; +}; + +// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding +// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html +jQuery.Event.prototype = { + constructor: jQuery.Event, + isDefaultPrevented: returnFalse, + isPropagationStopped: returnFalse, + isImmediatePropagationStopped: returnFalse, + isSimulated: false, + + preventDefault: function() { + var e = this.originalEvent; + + this.isDefaultPrevented = returnTrue; + + if ( e && !this.isSimulated ) { + e.preventDefault(); + } + }, + stopPropagation: function() { + var e = this.originalEvent; + + this.isPropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopPropagation(); + } + }, + stopImmediatePropagation: function() { + var e = this.originalEvent; + + this.isImmediatePropagationStopped = returnTrue; + + if ( e && !this.isSimulated ) { + e.stopImmediatePropagation(); + } + + this.stopPropagation(); + } +}; + +// Includes all common event props including KeyEvent and MouseEvent specific props +jQuery.each( { + altKey: true, + bubbles: true, + cancelable: true, + changedTouches: true, + ctrlKey: true, + detail: true, + eventPhase: true, + metaKey: true, + pageX: true, + pageY: true, + shiftKey: true, + view: true, + "char": true, + code: true, + charCode: true, + key: true, + keyCode: true, + button: true, + buttons: true, + clientX: true, + clientY: true, + offsetX: true, + offsetY: true, + pointerId: true, + pointerType: true, + screenX: true, + screenY: true, + targetTouches: true, + toElement: true, + touches: true, + + which: function( event ) { + var button = event.button; + + // Add which for key events + if ( event.which == null && rkeyEvent.test( event.type ) ) { + return event.charCode != null ? event.charCode : event.keyCode; + } + + // Add which for click: 1 === left; 2 === middle; 3 === right + if ( !event.which && button !== undefined && rmouseEvent.test( event.type ) ) { + if ( button & 1 ) { + return 1; + } + + if ( button & 2 ) { + return 3; + } + + if ( button & 4 ) { + return 2; + } + + return 0; + } + + return event.which; + } +}, jQuery.event.addProp ); + +jQuery.each( { focus: "focusin", blur: "focusout" }, function( type, delegateType ) { + jQuery.event.special[ type ] = { + + // Utilize native event if possible so blur/focus sequence is correct + setup: function() { + + // Claim the first handler + // dataPriv.set( this, "focus", ... ) + // dataPriv.set( this, "blur", ... ) + leverageNative( this, type, expectSync ); + + // Return false to allow normal processing in the caller + return false; + }, + trigger: function() { + + // Force setup before trigger + leverageNative( this, type ); + + // Return non-false to allow normal event-path propagation + return true; + }, + + delegateType: delegateType + }; +} ); + +// Create mouseenter/leave events using mouseover/out and event-time checks +// so that event delegation works in jQuery. +// Do the same for pointerenter/pointerleave and pointerover/pointerout +// +// Support: Safari 7 only +// Safari sends mouseenter too often; see: +// https://bugs.chromium.org/p/chromium/issues/detail?id=470258 +// for the description of the bug (it existed in older Chrome versions as well). +jQuery.each( { + mouseenter: "mouseover", + mouseleave: "mouseout", + pointerenter: "pointerover", + pointerleave: "pointerout" +}, function( orig, fix ) { + jQuery.event.special[ orig ] = { + delegateType: fix, + bindType: fix, + + handle: function( event ) { + var ret, + target = this, + related = event.relatedTarget, + handleObj = event.handleObj; + + // For mouseenter/leave call the handler if related is outside the target. + // NB: No relatedTarget if the mouse left/entered the browser window + if ( !related || ( related !== target && !jQuery.contains( target, related ) ) ) { + event.type = handleObj.origType; + ret = handleObj.handler.apply( this, arguments ); + event.type = fix; + } + return ret; + } + }; +} ); + +jQuery.fn.extend( { + + on: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn ); + }, + one: function( types, selector, data, fn ) { + return on( this, types, selector, data, fn, 1 ); + }, + off: function( types, selector, fn ) { + var handleObj, type; + if ( types && types.preventDefault && types.handleObj ) { + + // ( event ) dispatched jQuery.Event + handleObj = types.handleObj; + jQuery( types.delegateTarget ).off( + handleObj.namespace ? + handleObj.origType + "." + handleObj.namespace : + handleObj.origType, + handleObj.selector, + handleObj.handler + ); + return this; + } + if ( typeof types === "object" ) { + + // ( types-object [, selector] ) + for ( type in types ) { + this.off( type, selector, types[ type ] ); + } + return this; + } + if ( selector === false || typeof selector === "function" ) { + + // ( types [, fn] ) + fn = selector; + selector = undefined; + } + if ( fn === false ) { + fn = returnFalse; + } + return this.each( function() { + jQuery.event.remove( this, types, fn, selector ); + } ); + } +} ); + + +var + + // Support: IE <=10 - 11, Edge 12 - 13 only + // In IE/Edge using regex groups here causes severe slowdowns. + // See https://connect.microsoft.com/IE/feedback/details/1736512/ + rnoInnerhtml = /\s*$/g; + +// Prefer a tbody over its parent table for containing new rows +function manipulationTarget( elem, content ) { + if ( nodeName( elem, "table" ) && + nodeName( content.nodeType !== 11 ? content : content.firstChild, "tr" ) ) { + + return jQuery( elem ).children( "tbody" )[ 0 ] || elem; + } + + return elem; +} + +// Replace/restore the type attribute of script elements for safe DOM manipulation +function disableScript( elem ) { + elem.type = ( elem.getAttribute( "type" ) !== null ) + "/" + elem.type; + return elem; +} +function restoreScript( elem ) { + if ( ( elem.type || "" ).slice( 0, 5 ) === "true/" ) { + elem.type = elem.type.slice( 5 ); + } else { + elem.removeAttribute( "type" ); + } + + return elem; +} + +function cloneCopyEvent( src, dest ) { + var i, l, type, pdataOld, udataOld, udataCur, events; + + if ( dest.nodeType !== 1 ) { + return; + } + + // 1. Copy private data: events, handlers, etc. + if ( dataPriv.hasData( src ) ) { + pdataOld = dataPriv.get( src ); + events = pdataOld.events; + + if ( events ) { + dataPriv.remove( dest, "handle events" ); + + for ( type in events ) { + for ( i = 0, l = events[ type ].length; i < l; i++ ) { + jQuery.event.add( dest, type, events[ type ][ i ] ); + } + } + } + } + + // 2. Copy user data + if ( dataUser.hasData( src ) ) { + udataOld = dataUser.access( src ); + udataCur = jQuery.extend( {}, udataOld ); + + dataUser.set( dest, udataCur ); + } +} + +// Fix IE bugs, see support tests +function fixInput( src, dest ) { + var nodeName = dest.nodeName.toLowerCase(); + + // Fails to persist the checked state of a cloned checkbox or radio button. + if ( nodeName === "input" && rcheckableType.test( src.type ) ) { + dest.checked = src.checked; + + // Fails to return the selected option to the default selected state when cloning options + } else if ( nodeName === "input" || nodeName === "textarea" ) { + dest.defaultValue = src.defaultValue; + } +} + +function domManip( collection, args, callback, ignored ) { + + // Flatten any nested arrays + args = flat( args ); + + var fragment, first, scripts, hasScripts, node, doc, + i = 0, + l = collection.length, + iNoClone = l - 1, + value = args[ 0 ], + valueIsFunction = isFunction( value ); + + // We can't cloneNode fragments that contain checked, in WebKit + if ( valueIsFunction || + ( l > 1 && typeof value === "string" && + !support.checkClone && rchecked.test( value ) ) ) { + return collection.each( function( index ) { + var self = collection.eq( index ); + if ( valueIsFunction ) { + args[ 0 ] = value.call( this, index, self.html() ); + } + domManip( self, args, callback, ignored ); + } ); + } + + if ( l ) { + fragment = buildFragment( args, collection[ 0 ].ownerDocument, false, collection, ignored ); + first = fragment.firstChild; + + if ( fragment.childNodes.length === 1 ) { + fragment = first; + } + + // Require either new content or an interest in ignored elements to invoke the callback + if ( first || ignored ) { + scripts = jQuery.map( getAll( fragment, "script" ), disableScript ); + hasScripts = scripts.length; + + // Use the original fragment for the last item + // instead of the first because it can end up + // being emptied incorrectly in certain situations (#8070). + for ( ; i < l; i++ ) { + node = fragment; + + if ( i !== iNoClone ) { + node = jQuery.clone( node, true, true ); + + // Keep references to cloned scripts for later restoration + if ( hasScripts ) { + + // Support: Android <=4.0 only, PhantomJS 1 only + // push.apply(_, arraylike) throws on ancient WebKit + jQuery.merge( scripts, getAll( node, "script" ) ); + } + } + + callback.call( collection[ i ], node, i ); + } + + if ( hasScripts ) { + doc = scripts[ scripts.length - 1 ].ownerDocument; + + // Reenable scripts + jQuery.map( scripts, restoreScript ); + + // Evaluate executable scripts on first document insertion + for ( i = 0; i < hasScripts; i++ ) { + node = scripts[ i ]; + if ( rscriptType.test( node.type || "" ) && + !dataPriv.access( node, "globalEval" ) && + jQuery.contains( doc, node ) ) { + + if ( node.src && ( node.type || "" ).toLowerCase() !== "module" ) { + + // Optional AJAX dependency, but won't run scripts if not present + if ( jQuery._evalUrl && !node.noModule ) { + jQuery._evalUrl( node.src, { + nonce: node.nonce || node.getAttribute( "nonce" ) + }, doc ); + } + } else { + DOMEval( node.textContent.replace( rcleanScript, "" ), node, doc ); + } + } + } + } + } + } + + return collection; +} + +function remove( elem, selector, keepData ) { + var node, + nodes = selector ? jQuery.filter( selector, elem ) : elem, + i = 0; + + for ( ; ( node = nodes[ i ] ) != null; i++ ) { + if ( !keepData && node.nodeType === 1 ) { + jQuery.cleanData( getAll( node ) ); + } + + if ( node.parentNode ) { + if ( keepData && isAttached( node ) ) { + setGlobalEval( getAll( node, "script" ) ); + } + node.parentNode.removeChild( node ); + } + } + + return elem; +} + +jQuery.extend( { + htmlPrefilter: function( html ) { + return html; + }, + + clone: function( elem, dataAndEvents, deepDataAndEvents ) { + var i, l, srcElements, destElements, + clone = elem.cloneNode( true ), + inPage = isAttached( elem ); + + // Fix IE cloning issues + if ( !support.noCloneChecked && ( elem.nodeType === 1 || elem.nodeType === 11 ) && + !jQuery.isXMLDoc( elem ) ) { + + // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2 + destElements = getAll( clone ); + srcElements = getAll( elem ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + fixInput( srcElements[ i ], destElements[ i ] ); + } + } + + // Copy the events from the original to the clone + if ( dataAndEvents ) { + if ( deepDataAndEvents ) { + srcElements = srcElements || getAll( elem ); + destElements = destElements || getAll( clone ); + + for ( i = 0, l = srcElements.length; i < l; i++ ) { + cloneCopyEvent( srcElements[ i ], destElements[ i ] ); + } + } else { + cloneCopyEvent( elem, clone ); + } + } + + // Preserve script evaluation history + destElements = getAll( clone, "script" ); + if ( destElements.length > 0 ) { + setGlobalEval( destElements, !inPage && getAll( elem, "script" ) ); + } + + // Return the cloned set + return clone; + }, + + cleanData: function( elems ) { + var data, elem, type, + special = jQuery.event.special, + i = 0; + + for ( ; ( elem = elems[ i ] ) !== undefined; i++ ) { + if ( acceptData( elem ) ) { + if ( ( data = elem[ dataPriv.expando ] ) ) { + if ( data.events ) { + for ( type in data.events ) { + if ( special[ type ] ) { + jQuery.event.remove( elem, type ); + + // This is a shortcut to avoid jQuery.event.remove's overhead + } else { + jQuery.removeEvent( elem, type, data.handle ); + } + } + } + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataPriv.expando ] = undefined; + } + if ( elem[ dataUser.expando ] ) { + + // Support: Chrome <=35 - 45+ + // Assign undefined instead of using delete, see Data#remove + elem[ dataUser.expando ] = undefined; + } + } + } + } +} ); + +jQuery.fn.extend( { + detach: function( selector ) { + return remove( this, selector, true ); + }, + + remove: function( selector ) { + return remove( this, selector ); + }, + + text: function( value ) { + return access( this, function( value ) { + return value === undefined ? + jQuery.text( this ) : + this.empty().each( function() { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + this.textContent = value; + } + } ); + }, null, value, arguments.length ); + }, + + append: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.appendChild( elem ); + } + } ); + }, + + prepend: function() { + return domManip( this, arguments, function( elem ) { + if ( this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9 ) { + var target = manipulationTarget( this, elem ); + target.insertBefore( elem, target.firstChild ); + } + } ); + }, + + before: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this ); + } + } ); + }, + + after: function() { + return domManip( this, arguments, function( elem ) { + if ( this.parentNode ) { + this.parentNode.insertBefore( elem, this.nextSibling ); + } + } ); + }, + + empty: function() { + var elem, + i = 0; + + for ( ; ( elem = this[ i ] ) != null; i++ ) { + if ( elem.nodeType === 1 ) { + + // Prevent memory leaks + jQuery.cleanData( getAll( elem, false ) ); + + // Remove any remaining nodes + elem.textContent = ""; + } + } + + return this; + }, + + clone: function( dataAndEvents, deepDataAndEvents ) { + dataAndEvents = dataAndEvents == null ? false : dataAndEvents; + deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents; + + return this.map( function() { + return jQuery.clone( this, dataAndEvents, deepDataAndEvents ); + } ); + }, + + html: function( value ) { + return access( this, function( value ) { + var elem = this[ 0 ] || {}, + i = 0, + l = this.length; + + if ( value === undefined && elem.nodeType === 1 ) { + return elem.innerHTML; + } + + // See if we can take a shortcut and just use innerHTML + if ( typeof value === "string" && !rnoInnerhtml.test( value ) && + !wrapMap[ ( rtagName.exec( value ) || [ "", "" ] )[ 1 ].toLowerCase() ] ) { + + value = jQuery.htmlPrefilter( value ); + + try { + for ( ; i < l; i++ ) { + elem = this[ i ] || {}; + + // Remove element nodes and prevent memory leaks + if ( elem.nodeType === 1 ) { + jQuery.cleanData( getAll( elem, false ) ); + elem.innerHTML = value; + } + } + + elem = 0; + + // If using innerHTML throws an exception, use the fallback method + } catch ( e ) {} + } + + if ( elem ) { + this.empty().append( value ); + } + }, null, value, arguments.length ); + }, + + replaceWith: function() { + var ignored = []; + + // Make the changes, replacing each non-ignored context element with the new content + return domManip( this, arguments, function( elem ) { + var parent = this.parentNode; + + if ( jQuery.inArray( this, ignored ) < 0 ) { + jQuery.cleanData( getAll( this ) ); + if ( parent ) { + parent.replaceChild( elem, this ); + } + } + + // Force callback invocation + }, ignored ); + } +} ); + +jQuery.each( { + appendTo: "append", + prependTo: "prepend", + insertBefore: "before", + insertAfter: "after", + replaceAll: "replaceWith" +}, function( name, original ) { + jQuery.fn[ name ] = function( selector ) { + var elems, + ret = [], + insert = jQuery( selector ), + last = insert.length - 1, + i = 0; + + for ( ; i <= last; i++ ) { + elems = i === last ? this : this.clone( true ); + jQuery( insert[ i ] )[ original ]( elems ); + + // Support: Android <=4.0 only, PhantomJS 1 only + // .get() because push.apply(_, arraylike) throws on ancient WebKit + push.apply( ret, elems.get() ); + } + + return this.pushStack( ret ); + }; +} ); +var rnumnonpx = new RegExp( "^(" + pnum + ")(?!px)[a-z%]+$", "i" ); + +var getStyles = function( elem ) { + + // Support: IE <=11 only, Firefox <=30 (#15098, #14150) + // IE throws on elements created in popups + // FF meanwhile throws on frame elements through "defaultView.getComputedStyle" + var view = elem.ownerDocument.defaultView; + + if ( !view || !view.opener ) { + view = window; + } + + return view.getComputedStyle( elem ); + }; + +var swap = function( elem, options, callback ) { + var ret, name, + old = {}; + + // Remember the old values, and insert the new ones + for ( name in options ) { + old[ name ] = elem.style[ name ]; + elem.style[ name ] = options[ name ]; + } + + ret = callback.call( elem ); + + // Revert the old values + for ( name in options ) { + elem.style[ name ] = old[ name ]; + } + + return ret; +}; + + +var rboxStyle = new RegExp( cssExpand.join( "|" ), "i" ); + + + +( function() { + + // Executing both pixelPosition & boxSizingReliable tests require only one layout + // so they're executed at the same time to save the second computation. + function computeStyleTests() { + + // This is a singleton, we need to execute it only once + if ( !div ) { + return; + } + + container.style.cssText = "position:absolute;left:-11111px;width:60px;" + + "margin-top:1px;padding:0;border:0"; + div.style.cssText = + "position:relative;display:block;box-sizing:border-box;overflow:scroll;" + + "margin:auto;border:1px;padding:1px;" + + "width:60%;top:1%"; + documentElement.appendChild( container ).appendChild( div ); + + var divStyle = window.getComputedStyle( div ); + pixelPositionVal = divStyle.top !== "1%"; + + // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44 + reliableMarginLeftVal = roundPixelMeasures( divStyle.marginLeft ) === 12; + + // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3 + // Some styles come back with percentage values, even though they shouldn't + div.style.right = "60%"; + pixelBoxStylesVal = roundPixelMeasures( divStyle.right ) === 36; + + // Support: IE 9 - 11 only + // Detect misreporting of content dimensions for box-sizing:border-box elements + boxSizingReliableVal = roundPixelMeasures( divStyle.width ) === 36; + + // Support: IE 9 only + // Detect overflow:scroll screwiness (gh-3699) + // Support: Chrome <=64 + // Don't get tricked when zoom affects offsetWidth (gh-4029) + div.style.position = "absolute"; + scrollboxSizeVal = roundPixelMeasures( div.offsetWidth / 3 ) === 12; + + documentElement.removeChild( container ); + + // Nullify the div so it wouldn't be stored in the memory and + // it will also be a sign that checks already performed + div = null; + } + + function roundPixelMeasures( measure ) { + return Math.round( parseFloat( measure ) ); + } + + var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal, + reliableTrDimensionsVal, reliableMarginLeftVal, + container = document.createElement( "div" ), + div = document.createElement( "div" ); + + // Finish early in limited (non-browser) environments + if ( !div.style ) { + return; + } + + // Support: IE <=9 - 11 only + // Style of cloned element affects source element cloned (#8908) + div.style.backgroundClip = "content-box"; + div.cloneNode( true ).style.backgroundClip = ""; + support.clearCloneStyle = div.style.backgroundClip === "content-box"; + + jQuery.extend( support, { + boxSizingReliable: function() { + computeStyleTests(); + return boxSizingReliableVal; + }, + pixelBoxStyles: function() { + computeStyleTests(); + return pixelBoxStylesVal; + }, + pixelPosition: function() { + computeStyleTests(); + return pixelPositionVal; + }, + reliableMarginLeft: function() { + computeStyleTests(); + return reliableMarginLeftVal; + }, + scrollboxSize: function() { + computeStyleTests(); + return scrollboxSizeVal; + }, + + // Support: IE 9 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Behavior in IE 9 is more subtle than in newer versions & it passes + // some versions of this test; make sure not to make it pass there! + reliableTrDimensions: function() { + var table, tr, trChild, trStyle; + if ( reliableTrDimensionsVal == null ) { + table = document.createElement( "table" ); + tr = document.createElement( "tr" ); + trChild = document.createElement( "div" ); + + table.style.cssText = "position:absolute;left:-11111px"; + tr.style.height = "1px"; + trChild.style.height = "9px"; + + documentElement + .appendChild( table ) + .appendChild( tr ) + .appendChild( trChild ); + + trStyle = window.getComputedStyle( tr ); + reliableTrDimensionsVal = parseInt( trStyle.height ) > 3; + + documentElement.removeChild( table ); + } + return reliableTrDimensionsVal; + } + } ); +} )(); + + +function curCSS( elem, name, computed ) { + var width, minWidth, maxWidth, ret, + + // Support: Firefox 51+ + // Retrieving style before computed somehow + // fixes an issue with getting wrong values + // on detached elements + style = elem.style; + + computed = computed || getStyles( elem ); + + // getPropertyValue is needed for: + // .css('filter') (IE 9 only, #12537) + // .css('--customProperty) (#3144) + if ( computed ) { + ret = computed.getPropertyValue( name ) || computed[ name ]; + + if ( ret === "" && !isAttached( elem ) ) { + ret = jQuery.style( elem, name ); + } + + // A tribute to the "awesome hack by Dean Edwards" + // Android Browser returns percentage for some values, + // but width seems to be reliably pixels. + // This is against the CSSOM draft spec: + // https://drafts.csswg.org/cssom/#resolved-values + if ( !support.pixelBoxStyles() && rnumnonpx.test( ret ) && rboxStyle.test( name ) ) { + + // Remember the original values + width = style.width; + minWidth = style.minWidth; + maxWidth = style.maxWidth; + + // Put in the new values to get a computed value out + style.minWidth = style.maxWidth = style.width = ret; + ret = computed.width; + + // Revert the changed values + style.width = width; + style.minWidth = minWidth; + style.maxWidth = maxWidth; + } + } + + return ret !== undefined ? + + // Support: IE <=9 - 11 only + // IE returns zIndex value as an integer. + ret + "" : + ret; +} + + +function addGetHookIf( conditionFn, hookFn ) { + + // Define the hook, we'll check on the first run if it's really needed. + return { + get: function() { + if ( conditionFn() ) { + + // Hook not needed (or it's not possible to use it due + // to missing dependency), remove it. + delete this.get; + return; + } + + // Hook needed; redefine it so that the support test is not executed again. + return ( this.get = hookFn ).apply( this, arguments ); + } + }; +} + + +var cssPrefixes = [ "Webkit", "Moz", "ms" ], + emptyStyle = document.createElement( "div" ).style, + vendorProps = {}; + +// Return a vendor-prefixed property or undefined +function vendorPropName( name ) { + + // Check for vendor prefixed names + var capName = name[ 0 ].toUpperCase() + name.slice( 1 ), + i = cssPrefixes.length; + + while ( i-- ) { + name = cssPrefixes[ i ] + capName; + if ( name in emptyStyle ) { + return name; + } + } +} + +// Return a potentially-mapped jQuery.cssProps or vendor prefixed property +function finalPropName( name ) { + var final = jQuery.cssProps[ name ] || vendorProps[ name ]; + + if ( final ) { + return final; + } + if ( name in emptyStyle ) { + return name; + } + return vendorProps[ name ] = vendorPropName( name ) || name; +} + + +var + + // Swappable if display is none or starts with table + // except "table", "table-cell", or "table-caption" + // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display + rdisplayswap = /^(none|table(?!-c[ea]).+)/, + rcustomProp = /^--/, + cssShow = { position: "absolute", visibility: "hidden", display: "block" }, + cssNormalTransform = { + letterSpacing: "0", + fontWeight: "400" + }; + +function setPositiveNumber( _elem, value, subtract ) { + + // Any relative (+/-) values have already been + // normalized at this point + var matches = rcssNum.exec( value ); + return matches ? + + // Guard against undefined "subtract", e.g., when used as in cssHooks + Math.max( 0, matches[ 2 ] - ( subtract || 0 ) ) + ( matches[ 3 ] || "px" ) : + value; +} + +function boxModelAdjustment( elem, dimension, box, isBorderBox, styles, computedVal ) { + var i = dimension === "width" ? 1 : 0, + extra = 0, + delta = 0; + + // Adjustment may not be necessary + if ( box === ( isBorderBox ? "border" : "content" ) ) { + return 0; + } + + for ( ; i < 4; i += 2 ) { + + // Both box models exclude margin + if ( box === "margin" ) { + delta += jQuery.css( elem, box + cssExpand[ i ], true, styles ); + } + + // If we get here with a content-box, we're seeking "padding" or "border" or "margin" + if ( !isBorderBox ) { + + // Add padding + delta += jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + + // For "border" or "margin", add border + if ( box !== "padding" ) { + delta += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + + // But still keep track of it otherwise + } else { + extra += jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + + // If we get here with a border-box (content + padding + border), we're seeking "content" or + // "padding" or "margin" + } else { + + // For "content", subtract padding + if ( box === "content" ) { + delta -= jQuery.css( elem, "padding" + cssExpand[ i ], true, styles ); + } + + // For "content" or "padding", subtract border + if ( box !== "margin" ) { + delta -= jQuery.css( elem, "border" + cssExpand[ i ] + "Width", true, styles ); + } + } + } + + // Account for positive content-box scroll gutter when requested by providing computedVal + if ( !isBorderBox && computedVal >= 0 ) { + + // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border + // Assuming integer scroll gutter, subtract the rest and round down + delta += Math.max( 0, Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + computedVal - + delta - + extra - + 0.5 + + // If offsetWidth/offsetHeight is unknown, then we can't determine content-box scroll gutter + // Use an explicit zero to avoid NaN (gh-3964) + ) ) || 0; + } + + return delta; +} + +function getWidthOrHeight( elem, dimension, extra ) { + + // Start with computed style + var styles = getStyles( elem ), + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-4322). + // Fake content-box until we know it's needed to know the true value. + boxSizingNeeded = !support.boxSizingReliable() || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + valueIsBorderBox = isBorderBox, + + val = curCSS( elem, dimension, styles ), + offsetProp = "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ); + + // Support: Firefox <=54 + // Return a confounding non-pixel value or feign ignorance, as appropriate. + if ( rnumnonpx.test( val ) ) { + if ( !extra ) { + return val; + } + val = "auto"; + } + + + // Support: IE 9 - 11 only + // Use offsetWidth/offsetHeight for when box sizing is unreliable. + // In those cases, the computed value can be trusted to be border-box. + if ( ( !support.boxSizingReliable() && isBorderBox || + + // Support: IE 10 - 11+, Edge 15 - 18+ + // IE/Edge misreport `getComputedStyle` of table rows with width/height + // set in CSS while `offset*` properties report correct values. + // Interestingly, in some cases IE 9 doesn't suffer from this issue. + !support.reliableTrDimensions() && nodeName( elem, "tr" ) || + + // Fall back to offsetWidth/offsetHeight when value is "auto" + // This happens for inline elements with no explicit setting (gh-3571) + val === "auto" || + + // Support: Android <=4.1 - 4.3 only + // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602) + !parseFloat( val ) && jQuery.css( elem, "display", false, styles ) === "inline" ) && + + // Make sure the element is visible & connected + elem.getClientRects().length ) { + + isBorderBox = jQuery.css( elem, "boxSizing", false, styles ) === "border-box"; + + // Where available, offsetWidth/offsetHeight approximate border box dimensions. + // Where not available (e.g., SVG), assume unreliable box-sizing and interpret the + // retrieved value as a content box dimension. + valueIsBorderBox = offsetProp in elem; + if ( valueIsBorderBox ) { + val = elem[ offsetProp ]; + } + } + + // Normalize "" and auto + val = parseFloat( val ) || 0; + + // Adjust for the element's box model + return ( val + + boxModelAdjustment( + elem, + dimension, + extra || ( isBorderBox ? "border" : "content" ), + valueIsBorderBox, + styles, + + // Provide the current computed size to request scroll gutter calculation (gh-3589) + val + ) + ) + "px"; +} + +jQuery.extend( { + + // Add in style property hooks for overriding the default + // behavior of getting and setting a style property + cssHooks: { + opacity: { + get: function( elem, computed ) { + if ( computed ) { + + // We should always get a number back from opacity + var ret = curCSS( elem, "opacity" ); + return ret === "" ? "1" : ret; + } + } + } + }, + + // Don't automatically add "px" to these possibly-unitless properties + cssNumber: { + "animationIterationCount": true, + "columnCount": true, + "fillOpacity": true, + "flexGrow": true, + "flexShrink": true, + "fontWeight": true, + "gridArea": true, + "gridColumn": true, + "gridColumnEnd": true, + "gridColumnStart": true, + "gridRow": true, + "gridRowEnd": true, + "gridRowStart": true, + "lineHeight": true, + "opacity": true, + "order": true, + "orphans": true, + "widows": true, + "zIndex": true, + "zoom": true + }, + + // Add in properties whose names you wish to fix before + // setting or getting the value + cssProps: {}, + + // Get and set the style property on a DOM Node + style: function( elem, name, value, extra ) { + + // Don't set styles on text and comment nodes + if ( !elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style ) { + return; + } + + // Make sure that we're working with the right name + var ret, type, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ), + style = elem.style; + + // Make sure that we're working with the right name. We don't + // want to query the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Gets hook for the prefixed version, then unprefixed version + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // Check if we're setting a value + if ( value !== undefined ) { + type = typeof value; + + // Convert "+=" or "-=" to relative numbers (#7345) + if ( type === "string" && ( ret = rcssNum.exec( value ) ) && ret[ 1 ] ) { + value = adjustCSS( elem, name, ret ); + + // Fixes bug #9237 + type = "number"; + } + + // Make sure that null and NaN values aren't set (#7116) + if ( value == null || value !== value ) { + return; + } + + // If a number was passed in, add the unit (except for certain CSS properties) + // The isCustomProp check can be removed in jQuery 4.0 when we only auto-append + // "px" to a few hardcoded values. + if ( type === "number" && !isCustomProp ) { + value += ret && ret[ 3 ] || ( jQuery.cssNumber[ origName ] ? "" : "px" ); + } + + // background-* props affect original clone's values + if ( !support.clearCloneStyle && value === "" && name.indexOf( "background" ) === 0 ) { + style[ name ] = "inherit"; + } + + // If a hook was provided, use that value, otherwise just set the specified value + if ( !hooks || !( "set" in hooks ) || + ( value = hooks.set( elem, value, extra ) ) !== undefined ) { + + if ( isCustomProp ) { + style.setProperty( name, value ); + } else { + style[ name ] = value; + } + } + + } else { + + // If a hook was provided get the non-computed value from there + if ( hooks && "get" in hooks && + ( ret = hooks.get( elem, false, extra ) ) !== undefined ) { + + return ret; + } + + // Otherwise just get the value from the style object + return style[ name ]; + } + }, + + css: function( elem, name, extra, styles ) { + var val, num, hooks, + origName = camelCase( name ), + isCustomProp = rcustomProp.test( name ); + + // Make sure that we're working with the right name. We don't + // want to modify the value if it is a CSS custom property + // since they are user-defined. + if ( !isCustomProp ) { + name = finalPropName( origName ); + } + + // Try prefixed name followed by the unprefixed name + hooks = jQuery.cssHooks[ name ] || jQuery.cssHooks[ origName ]; + + // If a hook was provided get the computed value from there + if ( hooks && "get" in hooks ) { + val = hooks.get( elem, true, extra ); + } + + // Otherwise, if a way to get the computed value exists, use that + if ( val === undefined ) { + val = curCSS( elem, name, styles ); + } + + // Convert "normal" to computed value + if ( val === "normal" && name in cssNormalTransform ) { + val = cssNormalTransform[ name ]; + } + + // Make numeric if forced or a qualifier was provided and val looks numeric + if ( extra === "" || extra ) { + num = parseFloat( val ); + return extra === true || isFinite( num ) ? num || 0 : val; + } + + return val; + } +} ); + +jQuery.each( [ "height", "width" ], function( _i, dimension ) { + jQuery.cssHooks[ dimension ] = { + get: function( elem, computed, extra ) { + if ( computed ) { + + // Certain elements can have dimension info if we invisibly show them + // but it must have a current display style that would benefit + return rdisplayswap.test( jQuery.css( elem, "display" ) ) && + + // Support: Safari 8+ + // Table columns in Safari have non-zero offsetWidth & zero + // getBoundingClientRect().width unless display is changed. + // Support: IE <=11 only + // Running getBoundingClientRect on a disconnected node + // in IE throws an error. + ( !elem.getClientRects().length || !elem.getBoundingClientRect().width ) ? + swap( elem, cssShow, function() { + return getWidthOrHeight( elem, dimension, extra ); + } ) : + getWidthOrHeight( elem, dimension, extra ); + } + }, + + set: function( elem, value, extra ) { + var matches, + styles = getStyles( elem ), + + // Only read styles.position if the test has a chance to fail + // to avoid forcing a reflow. + scrollboxSizeBuggy = !support.scrollboxSize() && + styles.position === "absolute", + + // To avoid forcing a reflow, only fetch boxSizing if we need it (gh-3991) + boxSizingNeeded = scrollboxSizeBuggy || extra, + isBorderBox = boxSizingNeeded && + jQuery.css( elem, "boxSizing", false, styles ) === "border-box", + subtract = extra ? + boxModelAdjustment( + elem, + dimension, + extra, + isBorderBox, + styles + ) : + 0; + + // Account for unreliable border-box dimensions by comparing offset* to computed and + // faking a content-box to get border and padding (gh-3699) + if ( isBorderBox && scrollboxSizeBuggy ) { + subtract -= Math.ceil( + elem[ "offset" + dimension[ 0 ].toUpperCase() + dimension.slice( 1 ) ] - + parseFloat( styles[ dimension ] ) - + boxModelAdjustment( elem, dimension, "border", false, styles ) - + 0.5 + ); + } + + // Convert to pixels if value adjustment is needed + if ( subtract && ( matches = rcssNum.exec( value ) ) && + ( matches[ 3 ] || "px" ) !== "px" ) { + + elem.style[ dimension ] = value; + value = jQuery.css( elem, dimension ); + } + + return setPositiveNumber( elem, value, subtract ); + } + }; +} ); + +jQuery.cssHooks.marginLeft = addGetHookIf( support.reliableMarginLeft, + function( elem, computed ) { + if ( computed ) { + return ( parseFloat( curCSS( elem, "marginLeft" ) ) || + elem.getBoundingClientRect().left - + swap( elem, { marginLeft: 0 }, function() { + return elem.getBoundingClientRect().left; + } ) + ) + "px"; + } + } +); + +// These hooks are used by animate to expand properties +jQuery.each( { + margin: "", + padding: "", + border: "Width" +}, function( prefix, suffix ) { + jQuery.cssHooks[ prefix + suffix ] = { + expand: function( value ) { + var i = 0, + expanded = {}, + + // Assumes a single number if not a string + parts = typeof value === "string" ? value.split( " " ) : [ value ]; + + for ( ; i < 4; i++ ) { + expanded[ prefix + cssExpand[ i ] + suffix ] = + parts[ i ] || parts[ i - 2 ] || parts[ 0 ]; + } + + return expanded; + } + }; + + if ( prefix !== "margin" ) { + jQuery.cssHooks[ prefix + suffix ].set = setPositiveNumber; + } +} ); + +jQuery.fn.extend( { + css: function( name, value ) { + return access( this, function( elem, name, value ) { + var styles, len, + map = {}, + i = 0; + + if ( Array.isArray( name ) ) { + styles = getStyles( elem ); + len = name.length; + + for ( ; i < len; i++ ) { + map[ name[ i ] ] = jQuery.css( elem, name[ i ], false, styles ); + } + + return map; + } + + return value !== undefined ? + jQuery.style( elem, name, value ) : + jQuery.css( elem, name ); + }, name, value, arguments.length > 1 ); + } +} ); + + +function Tween( elem, options, prop, end, easing ) { + return new Tween.prototype.init( elem, options, prop, end, easing ); +} +jQuery.Tween = Tween; + +Tween.prototype = { + constructor: Tween, + init: function( elem, options, prop, end, easing, unit ) { + this.elem = elem; + this.prop = prop; + this.easing = easing || jQuery.easing._default; + this.options = options; + this.start = this.now = this.cur(); + this.end = end; + this.unit = unit || ( jQuery.cssNumber[ prop ] ? "" : "px" ); + }, + cur: function() { + var hooks = Tween.propHooks[ this.prop ]; + + return hooks && hooks.get ? + hooks.get( this ) : + Tween.propHooks._default.get( this ); + }, + run: function( percent ) { + var eased, + hooks = Tween.propHooks[ this.prop ]; + + if ( this.options.duration ) { + this.pos = eased = jQuery.easing[ this.easing ]( + percent, this.options.duration * percent, 0, 1, this.options.duration + ); + } else { + this.pos = eased = percent; + } + this.now = ( this.end - this.start ) * eased + this.start; + + if ( this.options.step ) { + this.options.step.call( this.elem, this.now, this ); + } + + if ( hooks && hooks.set ) { + hooks.set( this ); + } else { + Tween.propHooks._default.set( this ); + } + return this; + } +}; + +Tween.prototype.init.prototype = Tween.prototype; + +Tween.propHooks = { + _default: { + get: function( tween ) { + var result; + + // Use a property on the element directly when it is not a DOM element, + // or when there is no matching style property that exists. + if ( tween.elem.nodeType !== 1 || + tween.elem[ tween.prop ] != null && tween.elem.style[ tween.prop ] == null ) { + return tween.elem[ tween.prop ]; + } + + // Passing an empty string as a 3rd parameter to .css will automatically + // attempt a parseFloat and fallback to a string if the parse fails. + // Simple values such as "10px" are parsed to Float; + // complex values such as "rotate(1rad)" are returned as-is. + result = jQuery.css( tween.elem, tween.prop, "" ); + + // Empty strings, null, undefined and "auto" are converted to 0. + return !result || result === "auto" ? 0 : result; + }, + set: function( tween ) { + + // Use step hook for back compat. + // Use cssHook if its there. + // Use .style if available and use plain properties where available. + if ( jQuery.fx.step[ tween.prop ] ) { + jQuery.fx.step[ tween.prop ]( tween ); + } else if ( tween.elem.nodeType === 1 && ( + jQuery.cssHooks[ tween.prop ] || + tween.elem.style[ finalPropName( tween.prop ) ] != null ) ) { + jQuery.style( tween.elem, tween.prop, tween.now + tween.unit ); + } else { + tween.elem[ tween.prop ] = tween.now; + } + } + } +}; + +// Support: IE <=9 only +// Panic based approach to setting things on disconnected nodes +Tween.propHooks.scrollTop = Tween.propHooks.scrollLeft = { + set: function( tween ) { + if ( tween.elem.nodeType && tween.elem.parentNode ) { + tween.elem[ tween.prop ] = tween.now; + } + } +}; + +jQuery.easing = { + linear: function( p ) { + return p; + }, + swing: function( p ) { + return 0.5 - Math.cos( p * Math.PI ) / 2; + }, + _default: "swing" +}; + +jQuery.fx = Tween.prototype.init; + +// Back compat <1.8 extension point +jQuery.fx.step = {}; + + + + +var + fxNow, inProgress, + rfxtypes = /^(?:toggle|show|hide)$/, + rrun = /queueHooks$/; + +function schedule() { + if ( inProgress ) { + if ( document.hidden === false && window.requestAnimationFrame ) { + window.requestAnimationFrame( schedule ); + } else { + window.setTimeout( schedule, jQuery.fx.interval ); + } + + jQuery.fx.tick(); + } +} + +// Animations created synchronously will run synchronously +function createFxNow() { + window.setTimeout( function() { + fxNow = undefined; + } ); + return ( fxNow = Date.now() ); +} + +// Generate parameters to create a standard animation +function genFx( type, includeWidth ) { + var which, + i = 0, + attrs = { height: type }; + + // If we include width, step value is 1 to do all cssExpand values, + // otherwise step value is 2 to skip over Left and Right + includeWidth = includeWidth ? 1 : 0; + for ( ; i < 4; i += 2 - includeWidth ) { + which = cssExpand[ i ]; + attrs[ "margin" + which ] = attrs[ "padding" + which ] = type; + } + + if ( includeWidth ) { + attrs.opacity = attrs.width = type; + } + + return attrs; +} + +function createTween( value, prop, animation ) { + var tween, + collection = ( Animation.tweeners[ prop ] || [] ).concat( Animation.tweeners[ "*" ] ), + index = 0, + length = collection.length; + for ( ; index < length; index++ ) { + if ( ( tween = collection[ index ].call( animation, prop, value ) ) ) { + + // We're done with this property + return tween; + } + } +} + +function defaultPrefilter( elem, props, opts ) { + var prop, value, toggle, hooks, oldfire, propTween, restoreDisplay, display, + isBox = "width" in props || "height" in props, + anim = this, + orig = {}, + style = elem.style, + hidden = elem.nodeType && isHiddenWithinTree( elem ), + dataShow = dataPriv.get( elem, "fxshow" ); + + // Queue-skipping animations hijack the fx hooks + if ( !opts.queue ) { + hooks = jQuery._queueHooks( elem, "fx" ); + if ( hooks.unqueued == null ) { + hooks.unqueued = 0; + oldfire = hooks.empty.fire; + hooks.empty.fire = function() { + if ( !hooks.unqueued ) { + oldfire(); + } + }; + } + hooks.unqueued++; + + anim.always( function() { + + // Ensure the complete handler is called before this completes + anim.always( function() { + hooks.unqueued--; + if ( !jQuery.queue( elem, "fx" ).length ) { + hooks.empty.fire(); + } + } ); + } ); + } + + // Detect show/hide animations + for ( prop in props ) { + value = props[ prop ]; + if ( rfxtypes.test( value ) ) { + delete props[ prop ]; + toggle = toggle || value === "toggle"; + if ( value === ( hidden ? "hide" : "show" ) ) { + + // Pretend to be hidden if this is a "show" and + // there is still data from a stopped show/hide + if ( value === "show" && dataShow && dataShow[ prop ] !== undefined ) { + hidden = true; + + // Ignore all other no-op show/hide data + } else { + continue; + } + } + orig[ prop ] = dataShow && dataShow[ prop ] || jQuery.style( elem, prop ); + } + } + + // Bail out if this is a no-op like .hide().hide() + propTween = !jQuery.isEmptyObject( props ); + if ( !propTween && jQuery.isEmptyObject( orig ) ) { + return; + } + + // Restrict "overflow" and "display" styles during box animations + if ( isBox && elem.nodeType === 1 ) { + + // Support: IE <=9 - 11, Edge 12 - 15 + // Record all 3 overflow attributes because IE does not infer the shorthand + // from identically-valued overflowX and overflowY and Edge just mirrors + // the overflowX value there. + opts.overflow = [ style.overflow, style.overflowX, style.overflowY ]; + + // Identify a display type, preferring old show/hide data over the CSS cascade + restoreDisplay = dataShow && dataShow.display; + if ( restoreDisplay == null ) { + restoreDisplay = dataPriv.get( elem, "display" ); + } + display = jQuery.css( elem, "display" ); + if ( display === "none" ) { + if ( restoreDisplay ) { + display = restoreDisplay; + } else { + + // Get nonempty value(s) by temporarily forcing visibility + showHide( [ elem ], true ); + restoreDisplay = elem.style.display || restoreDisplay; + display = jQuery.css( elem, "display" ); + showHide( [ elem ] ); + } + } + + // Animate inline elements as inline-block + if ( display === "inline" || display === "inline-block" && restoreDisplay != null ) { + if ( jQuery.css( elem, "float" ) === "none" ) { + + // Restore the original display value at the end of pure show/hide animations + if ( !propTween ) { + anim.done( function() { + style.display = restoreDisplay; + } ); + if ( restoreDisplay == null ) { + display = style.display; + restoreDisplay = display === "none" ? "" : display; + } + } + style.display = "inline-block"; + } + } + } + + if ( opts.overflow ) { + style.overflow = "hidden"; + anim.always( function() { + style.overflow = opts.overflow[ 0 ]; + style.overflowX = opts.overflow[ 1 ]; + style.overflowY = opts.overflow[ 2 ]; + } ); + } + + // Implement show/hide animations + propTween = false; + for ( prop in orig ) { + + // General show/hide setup for this element animation + if ( !propTween ) { + if ( dataShow ) { + if ( "hidden" in dataShow ) { + hidden = dataShow.hidden; + } + } else { + dataShow = dataPriv.access( elem, "fxshow", { display: restoreDisplay } ); + } + + // Store hidden/visible for toggle so `.stop().toggle()` "reverses" + if ( toggle ) { + dataShow.hidden = !hidden; + } + + // Show elements before animating them + if ( hidden ) { + showHide( [ elem ], true ); + } + + /* eslint-disable no-loop-func */ + + anim.done( function() { + + /* eslint-enable no-loop-func */ + + // The final step of a "hide" animation is actually hiding the element + if ( !hidden ) { + showHide( [ elem ] ); + } + dataPriv.remove( elem, "fxshow" ); + for ( prop in orig ) { + jQuery.style( elem, prop, orig[ prop ] ); + } + } ); + } + + // Per-property setup + propTween = createTween( hidden ? dataShow[ prop ] : 0, prop, anim ); + if ( !( prop in dataShow ) ) { + dataShow[ prop ] = propTween.start; + if ( hidden ) { + propTween.end = propTween.start; + propTween.start = 0; + } + } + } +} + +function propFilter( props, specialEasing ) { + var index, name, easing, value, hooks; + + // camelCase, specialEasing and expand cssHook pass + for ( index in props ) { + name = camelCase( index ); + easing = specialEasing[ name ]; + value = props[ index ]; + if ( Array.isArray( value ) ) { + easing = value[ 1 ]; + value = props[ index ] = value[ 0 ]; + } + + if ( index !== name ) { + props[ name ] = value; + delete props[ index ]; + } + + hooks = jQuery.cssHooks[ name ]; + if ( hooks && "expand" in hooks ) { + value = hooks.expand( value ); + delete props[ name ]; + + // Not quite $.extend, this won't overwrite existing keys. + // Reusing 'index' because we have the correct "name" + for ( index in value ) { + if ( !( index in props ) ) { + props[ index ] = value[ index ]; + specialEasing[ index ] = easing; + } + } + } else { + specialEasing[ name ] = easing; + } + } +} + +function Animation( elem, properties, options ) { + var result, + stopped, + index = 0, + length = Animation.prefilters.length, + deferred = jQuery.Deferred().always( function() { + + // Don't match elem in the :animated selector + delete tick.elem; + } ), + tick = function() { + if ( stopped ) { + return false; + } + var currentTime = fxNow || createFxNow(), + remaining = Math.max( 0, animation.startTime + animation.duration - currentTime ), + + // Support: Android 2.3 only + // Archaic crash bug won't allow us to use `1 - ( 0.5 || 0 )` (#12497) + temp = remaining / animation.duration || 0, + percent = 1 - temp, + index = 0, + length = animation.tweens.length; + + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( percent ); + } + + deferred.notifyWith( elem, [ animation, percent, remaining ] ); + + // If there's more to do, yield + if ( percent < 1 && length ) { + return remaining; + } + + // If this was an empty animation, synthesize a final progress notification + if ( !length ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + } + + // Resolve the animation and report its conclusion + deferred.resolveWith( elem, [ animation ] ); + return false; + }, + animation = deferred.promise( { + elem: elem, + props: jQuery.extend( {}, properties ), + opts: jQuery.extend( true, { + specialEasing: {}, + easing: jQuery.easing._default + }, options ), + originalProperties: properties, + originalOptions: options, + startTime: fxNow || createFxNow(), + duration: options.duration, + tweens: [], + createTween: function( prop, end ) { + var tween = jQuery.Tween( elem, animation.opts, prop, end, + animation.opts.specialEasing[ prop ] || animation.opts.easing ); + animation.tweens.push( tween ); + return tween; + }, + stop: function( gotoEnd ) { + var index = 0, + + // If we are going to the end, we want to run all the tweens + // otherwise we skip this part + length = gotoEnd ? animation.tweens.length : 0; + if ( stopped ) { + return this; + } + stopped = true; + for ( ; index < length; index++ ) { + animation.tweens[ index ].run( 1 ); + } + + // Resolve when we played the last frame; otherwise, reject + if ( gotoEnd ) { + deferred.notifyWith( elem, [ animation, 1, 0 ] ); + deferred.resolveWith( elem, [ animation, gotoEnd ] ); + } else { + deferred.rejectWith( elem, [ animation, gotoEnd ] ); + } + return this; + } + } ), + props = animation.props; + + propFilter( props, animation.opts.specialEasing ); + + for ( ; index < length; index++ ) { + result = Animation.prefilters[ index ].call( animation, elem, props, animation.opts ); + if ( result ) { + if ( isFunction( result.stop ) ) { + jQuery._queueHooks( animation.elem, animation.opts.queue ).stop = + result.stop.bind( result ); + } + return result; + } + } + + jQuery.map( props, createTween, animation ); + + if ( isFunction( animation.opts.start ) ) { + animation.opts.start.call( elem, animation ); + } + + // Attach callbacks from options + animation + .progress( animation.opts.progress ) + .done( animation.opts.done, animation.opts.complete ) + .fail( animation.opts.fail ) + .always( animation.opts.always ); + + jQuery.fx.timer( + jQuery.extend( tick, { + elem: elem, + anim: animation, + queue: animation.opts.queue + } ) + ); + + return animation; +} + +jQuery.Animation = jQuery.extend( Animation, { + + tweeners: { + "*": [ function( prop, value ) { + var tween = this.createTween( prop, value ); + adjustCSS( tween.elem, prop, rcssNum.exec( value ), tween ); + return tween; + } ] + }, + + tweener: function( props, callback ) { + if ( isFunction( props ) ) { + callback = props; + props = [ "*" ]; + } else { + props = props.match( rnothtmlwhite ); + } + + var prop, + index = 0, + length = props.length; + + for ( ; index < length; index++ ) { + prop = props[ index ]; + Animation.tweeners[ prop ] = Animation.tweeners[ prop ] || []; + Animation.tweeners[ prop ].unshift( callback ); + } + }, + + prefilters: [ defaultPrefilter ], + + prefilter: function( callback, prepend ) { + if ( prepend ) { + Animation.prefilters.unshift( callback ); + } else { + Animation.prefilters.push( callback ); + } + } +} ); + +jQuery.speed = function( speed, easing, fn ) { + var opt = speed && typeof speed === "object" ? jQuery.extend( {}, speed ) : { + complete: fn || !fn && easing || + isFunction( speed ) && speed, + duration: speed, + easing: fn && easing || easing && !isFunction( easing ) && easing + }; + + // Go to the end state if fx are off + if ( jQuery.fx.off ) { + opt.duration = 0; + + } else { + if ( typeof opt.duration !== "number" ) { + if ( opt.duration in jQuery.fx.speeds ) { + opt.duration = jQuery.fx.speeds[ opt.duration ]; + + } else { + opt.duration = jQuery.fx.speeds._default; + } + } + } + + // Normalize opt.queue - true/undefined/null -> "fx" + if ( opt.queue == null || opt.queue === true ) { + opt.queue = "fx"; + } + + // Queueing + opt.old = opt.complete; + + opt.complete = function() { + if ( isFunction( opt.old ) ) { + opt.old.call( this ); + } + + if ( opt.queue ) { + jQuery.dequeue( this, opt.queue ); + } + }; + + return opt; +}; + +jQuery.fn.extend( { + fadeTo: function( speed, to, easing, callback ) { + + // Show any hidden elements after setting opacity to 0 + return this.filter( isHiddenWithinTree ).css( "opacity", 0 ).show() + + // Animate to the value specified + .end().animate( { opacity: to }, speed, easing, callback ); + }, + animate: function( prop, speed, easing, callback ) { + var empty = jQuery.isEmptyObject( prop ), + optall = jQuery.speed( speed, easing, callback ), + doAnimation = function() { + + // Operate on a copy of prop so per-property easing won't be lost + var anim = Animation( this, jQuery.extend( {}, prop ), optall ); + + // Empty animations, or finishing resolves immediately + if ( empty || dataPriv.get( this, "finish" ) ) { + anim.stop( true ); + } + }; + doAnimation.finish = doAnimation; + + return empty || optall.queue === false ? + this.each( doAnimation ) : + this.queue( optall.queue, doAnimation ); + }, + stop: function( type, clearQueue, gotoEnd ) { + var stopQueue = function( hooks ) { + var stop = hooks.stop; + delete hooks.stop; + stop( gotoEnd ); + }; + + if ( typeof type !== "string" ) { + gotoEnd = clearQueue; + clearQueue = type; + type = undefined; + } + if ( clearQueue ) { + this.queue( type || "fx", [] ); + } + + return this.each( function() { + var dequeue = true, + index = type != null && type + "queueHooks", + timers = jQuery.timers, + data = dataPriv.get( this ); + + if ( index ) { + if ( data[ index ] && data[ index ].stop ) { + stopQueue( data[ index ] ); + } + } else { + for ( index in data ) { + if ( data[ index ] && data[ index ].stop && rrun.test( index ) ) { + stopQueue( data[ index ] ); + } + } + } + + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && + ( type == null || timers[ index ].queue === type ) ) { + + timers[ index ].anim.stop( gotoEnd ); + dequeue = false; + timers.splice( index, 1 ); + } + } + + // Start the next in the queue if the last step wasn't forced. + // Timers currently will call their complete callbacks, which + // will dequeue but only if they were gotoEnd. + if ( dequeue || !gotoEnd ) { + jQuery.dequeue( this, type ); + } + } ); + }, + finish: function( type ) { + if ( type !== false ) { + type = type || "fx"; + } + return this.each( function() { + var index, + data = dataPriv.get( this ), + queue = data[ type + "queue" ], + hooks = data[ type + "queueHooks" ], + timers = jQuery.timers, + length = queue ? queue.length : 0; + + // Enable finishing flag on private data + data.finish = true; + + // Empty the queue first + jQuery.queue( this, type, [] ); + + if ( hooks && hooks.stop ) { + hooks.stop.call( this, true ); + } + + // Look for any active animations, and finish them + for ( index = timers.length; index--; ) { + if ( timers[ index ].elem === this && timers[ index ].queue === type ) { + timers[ index ].anim.stop( true ); + timers.splice( index, 1 ); + } + } + + // Look for any animations in the old queue and finish them + for ( index = 0; index < length; index++ ) { + if ( queue[ index ] && queue[ index ].finish ) { + queue[ index ].finish.call( this ); + } + } + + // Turn off finishing flag + delete data.finish; + } ); + } +} ); + +jQuery.each( [ "toggle", "show", "hide" ], function( _i, name ) { + var cssFn = jQuery.fn[ name ]; + jQuery.fn[ name ] = function( speed, easing, callback ) { + return speed == null || typeof speed === "boolean" ? + cssFn.apply( this, arguments ) : + this.animate( genFx( name, true ), speed, easing, callback ); + }; +} ); + +// Generate shortcuts for custom animations +jQuery.each( { + slideDown: genFx( "show" ), + slideUp: genFx( "hide" ), + slideToggle: genFx( "toggle" ), + fadeIn: { opacity: "show" }, + fadeOut: { opacity: "hide" }, + fadeToggle: { opacity: "toggle" } +}, function( name, props ) { + jQuery.fn[ name ] = function( speed, easing, callback ) { + return this.animate( props, speed, easing, callback ); + }; +} ); + +jQuery.timers = []; +jQuery.fx.tick = function() { + var timer, + i = 0, + timers = jQuery.timers; + + fxNow = Date.now(); + + for ( ; i < timers.length; i++ ) { + timer = timers[ i ]; + + // Run the timer and safely remove it when done (allowing for external removal) + if ( !timer() && timers[ i ] === timer ) { + timers.splice( i--, 1 ); + } + } + + if ( !timers.length ) { + jQuery.fx.stop(); + } + fxNow = undefined; +}; + +jQuery.fx.timer = function( timer ) { + jQuery.timers.push( timer ); + jQuery.fx.start(); +}; + +jQuery.fx.interval = 13; +jQuery.fx.start = function() { + if ( inProgress ) { + return; + } + + inProgress = true; + schedule(); +}; + +jQuery.fx.stop = function() { + inProgress = null; +}; + +jQuery.fx.speeds = { + slow: 600, + fast: 200, + + // Default speed + _default: 400 +}; + + +// Based off of the plugin by Clint Helfers, with permission. +// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/ +jQuery.fn.delay = function( time, type ) { + time = jQuery.fx ? jQuery.fx.speeds[ time ] || time : time; + type = type || "fx"; + + return this.queue( type, function( next, hooks ) { + var timeout = window.setTimeout( next, time ); + hooks.stop = function() { + window.clearTimeout( timeout ); + }; + } ); +}; + + +( function() { + var input = document.createElement( "input" ), + select = document.createElement( "select" ), + opt = select.appendChild( document.createElement( "option" ) ); + + input.type = "checkbox"; + + // Support: Android <=4.3 only + // Default value for a checkbox should be "on" + support.checkOn = input.value !== ""; + + // Support: IE <=11 only + // Must access selectedIndex to make default options select + support.optSelected = opt.selected; + + // Support: IE <=11 only + // An input loses its value after becoming a radio + input = document.createElement( "input" ); + input.value = "t"; + input.type = "radio"; + support.radioValue = input.value === "t"; +} )(); + + +var boolHook, + attrHandle = jQuery.expr.attrHandle; + +jQuery.fn.extend( { + attr: function( name, value ) { + return access( this, jQuery.attr, name, value, arguments.length > 1 ); + }, + + removeAttr: function( name ) { + return this.each( function() { + jQuery.removeAttr( this, name ); + } ); + } +} ); + +jQuery.extend( { + attr: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set attributes on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + // Fallback to prop when attributes are not supported + if ( typeof elem.getAttribute === "undefined" ) { + return jQuery.prop( elem, name, value ); + } + + // Attribute hooks are determined by the lowercase version + // Grab necessary hook if one is defined + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + hooks = jQuery.attrHooks[ name.toLowerCase() ] || + ( jQuery.expr.match.bool.test( name ) ? boolHook : undefined ); + } + + if ( value !== undefined ) { + if ( value === null ) { + jQuery.removeAttr( elem, name ); + return; + } + + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + elem.setAttribute( name, value + "" ); + return value; + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + ret = jQuery.find.attr( elem, name ); + + // Non-existent attributes return null, we normalize to undefined + return ret == null ? undefined : ret; + }, + + attrHooks: { + type: { + set: function( elem, value ) { + if ( !support.radioValue && value === "radio" && + nodeName( elem, "input" ) ) { + var val = elem.value; + elem.setAttribute( "type", value ); + if ( val ) { + elem.value = val; + } + return value; + } + } + } + }, + + removeAttr: function( elem, value ) { + var name, + i = 0, + + // Attribute names can contain non-HTML whitespace characters + // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2 + attrNames = value && value.match( rnothtmlwhite ); + + if ( attrNames && elem.nodeType === 1 ) { + while ( ( name = attrNames[ i++ ] ) ) { + elem.removeAttribute( name ); + } + } + } +} ); + +// Hooks for boolean attributes +boolHook = { + set: function( elem, value, name ) { + if ( value === false ) { + + // Remove boolean attributes when set to false + jQuery.removeAttr( elem, name ); + } else { + elem.setAttribute( name, name ); + } + return name; + } +}; + +jQuery.each( jQuery.expr.match.bool.source.match( /\w+/g ), function( _i, name ) { + var getter = attrHandle[ name ] || jQuery.find.attr; + + attrHandle[ name ] = function( elem, name, isXML ) { + var ret, handle, + lowercaseName = name.toLowerCase(); + + if ( !isXML ) { + + // Avoid an infinite loop by temporarily removing this function from the getter + handle = attrHandle[ lowercaseName ]; + attrHandle[ lowercaseName ] = ret; + ret = getter( elem, name, isXML ) != null ? + lowercaseName : + null; + attrHandle[ lowercaseName ] = handle; + } + return ret; + }; +} ); + + + + +var rfocusable = /^(?:input|select|textarea|button)$/i, + rclickable = /^(?:a|area)$/i; + +jQuery.fn.extend( { + prop: function( name, value ) { + return access( this, jQuery.prop, name, value, arguments.length > 1 ); + }, + + removeProp: function( name ) { + return this.each( function() { + delete this[ jQuery.propFix[ name ] || name ]; + } ); + } +} ); + +jQuery.extend( { + prop: function( elem, name, value ) { + var ret, hooks, + nType = elem.nodeType; + + // Don't get/set properties on text, comment and attribute nodes + if ( nType === 3 || nType === 8 || nType === 2 ) { + return; + } + + if ( nType !== 1 || !jQuery.isXMLDoc( elem ) ) { + + // Fix name and attach hooks + name = jQuery.propFix[ name ] || name; + hooks = jQuery.propHooks[ name ]; + } + + if ( value !== undefined ) { + if ( hooks && "set" in hooks && + ( ret = hooks.set( elem, value, name ) ) !== undefined ) { + return ret; + } + + return ( elem[ name ] = value ); + } + + if ( hooks && "get" in hooks && ( ret = hooks.get( elem, name ) ) !== null ) { + return ret; + } + + return elem[ name ]; + }, + + propHooks: { + tabIndex: { + get: function( elem ) { + + // Support: IE <=9 - 11 only + // elem.tabIndex doesn't always return the + // correct value when it hasn't been explicitly set + // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/ + // Use proper attribute retrieval(#12072) + var tabindex = jQuery.find.attr( elem, "tabindex" ); + + if ( tabindex ) { + return parseInt( tabindex, 10 ); + } + + if ( + rfocusable.test( elem.nodeName ) || + rclickable.test( elem.nodeName ) && + elem.href + ) { + return 0; + } + + return -1; + } + } + }, + + propFix: { + "for": "htmlFor", + "class": "className" + } +} ); + +// Support: IE <=11 only +// Accessing the selectedIndex property +// forces the browser to respect setting selected +// on the option +// The getter ensures a default option is selected +// when in an optgroup +// eslint rule "no-unused-expressions" is disabled for this code +// since it considers such accessions noop +if ( !support.optSelected ) { + jQuery.propHooks.selected = { + get: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent && parent.parentNode ) { + parent.parentNode.selectedIndex; + } + return null; + }, + set: function( elem ) { + + /* eslint no-unused-expressions: "off" */ + + var parent = elem.parentNode; + if ( parent ) { + parent.selectedIndex; + + if ( parent.parentNode ) { + parent.parentNode.selectedIndex; + } + } + } + }; +} + +jQuery.each( [ + "tabIndex", + "readOnly", + "maxLength", + "cellSpacing", + "cellPadding", + "rowSpan", + "colSpan", + "useMap", + "frameBorder", + "contentEditable" +], function() { + jQuery.propFix[ this.toLowerCase() ] = this; +} ); + + + + + // Strip and collapse whitespace according to HTML spec + // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace + function stripAndCollapse( value ) { + var tokens = value.match( rnothtmlwhite ) || []; + return tokens.join( " " ); + } + + +function getClass( elem ) { + return elem.getAttribute && elem.getAttribute( "class" ) || ""; +} + +function classesToArray( value ) { + if ( Array.isArray( value ) ) { + return value; + } + if ( typeof value === "string" ) { + return value.match( rnothtmlwhite ) || []; + } + return []; +} + +jQuery.fn.extend( { + addClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).addClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + if ( cur.indexOf( " " + clazz + " " ) < 0 ) { + cur += clazz + " "; + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + removeClass: function( value ) { + var classes, elem, cur, curValue, clazz, j, finalValue, + i = 0; + + if ( isFunction( value ) ) { + return this.each( function( j ) { + jQuery( this ).removeClass( value.call( this, j, getClass( this ) ) ); + } ); + } + + if ( !arguments.length ) { + return this.attr( "class", "" ); + } + + classes = classesToArray( value ); + + if ( classes.length ) { + while ( ( elem = this[ i++ ] ) ) { + curValue = getClass( elem ); + + // This expression is here for better compressibility (see addClass) + cur = elem.nodeType === 1 && ( " " + stripAndCollapse( curValue ) + " " ); + + if ( cur ) { + j = 0; + while ( ( clazz = classes[ j++ ] ) ) { + + // Remove *all* instances + while ( cur.indexOf( " " + clazz + " " ) > -1 ) { + cur = cur.replace( " " + clazz + " ", " " ); + } + } + + // Only assign if different to avoid unneeded rendering. + finalValue = stripAndCollapse( cur ); + if ( curValue !== finalValue ) { + elem.setAttribute( "class", finalValue ); + } + } + } + } + + return this; + }, + + toggleClass: function( value, stateVal ) { + var type = typeof value, + isValidValue = type === "string" || Array.isArray( value ); + + if ( typeof stateVal === "boolean" && isValidValue ) { + return stateVal ? this.addClass( value ) : this.removeClass( value ); + } + + if ( isFunction( value ) ) { + return this.each( function( i ) { + jQuery( this ).toggleClass( + value.call( this, i, getClass( this ), stateVal ), + stateVal + ); + } ); + } + + return this.each( function() { + var className, i, self, classNames; + + if ( isValidValue ) { + + // Toggle individual class names + i = 0; + self = jQuery( this ); + classNames = classesToArray( value ); + + while ( ( className = classNames[ i++ ] ) ) { + + // Check each className given, space separated list + if ( self.hasClass( className ) ) { + self.removeClass( className ); + } else { + self.addClass( className ); + } + } + + // Toggle whole class name + } else if ( value === undefined || type === "boolean" ) { + className = getClass( this ); + if ( className ) { + + // Store className if set + dataPriv.set( this, "__className__", className ); + } + + // If the element has a class name or if we're passed `false`, + // then remove the whole classname (if there was one, the above saved it). + // Otherwise bring back whatever was previously saved (if anything), + // falling back to the empty string if nothing was stored. + if ( this.setAttribute ) { + this.setAttribute( "class", + className || value === false ? + "" : + dataPriv.get( this, "__className__" ) || "" + ); + } + } + } ); + }, + + hasClass: function( selector ) { + var className, elem, + i = 0; + + className = " " + selector + " "; + while ( ( elem = this[ i++ ] ) ) { + if ( elem.nodeType === 1 && + ( " " + stripAndCollapse( getClass( elem ) ) + " " ).indexOf( className ) > -1 ) { + return true; + } + } + + return false; + } +} ); + + + + +var rreturn = /\r/g; + +jQuery.fn.extend( { + val: function( value ) { + var hooks, ret, valueIsFunction, + elem = this[ 0 ]; + + if ( !arguments.length ) { + if ( elem ) { + hooks = jQuery.valHooks[ elem.type ] || + jQuery.valHooks[ elem.nodeName.toLowerCase() ]; + + if ( hooks && + "get" in hooks && + ( ret = hooks.get( elem, "value" ) ) !== undefined + ) { + return ret; + } + + ret = elem.value; + + // Handle most common string cases + if ( typeof ret === "string" ) { + return ret.replace( rreturn, "" ); + } + + // Handle cases where value is null/undef or number + return ret == null ? "" : ret; + } + + return; + } + + valueIsFunction = isFunction( value ); + + return this.each( function( i ) { + var val; + + if ( this.nodeType !== 1 ) { + return; + } + + if ( valueIsFunction ) { + val = value.call( this, i, jQuery( this ).val() ); + } else { + val = value; + } + + // Treat null/undefined as ""; convert numbers to string + if ( val == null ) { + val = ""; + + } else if ( typeof val === "number" ) { + val += ""; + + } else if ( Array.isArray( val ) ) { + val = jQuery.map( val, function( value ) { + return value == null ? "" : value + ""; + } ); + } + + hooks = jQuery.valHooks[ this.type ] || jQuery.valHooks[ this.nodeName.toLowerCase() ]; + + // If set returns undefined, fall back to normal setting + if ( !hooks || !( "set" in hooks ) || hooks.set( this, val, "value" ) === undefined ) { + this.value = val; + } + } ); + } +} ); + +jQuery.extend( { + valHooks: { + option: { + get: function( elem ) { + + var val = jQuery.find.attr( elem, "value" ); + return val != null ? + val : + + // Support: IE <=10 - 11 only + // option.text throws exceptions (#14686, #14858) + // Strip and collapse whitespace + // https://html.spec.whatwg.org/#strip-and-collapse-whitespace + stripAndCollapse( jQuery.text( elem ) ); + } + }, + select: { + get: function( elem ) { + var value, option, i, + options = elem.options, + index = elem.selectedIndex, + one = elem.type === "select-one", + values = one ? null : [], + max = one ? index + 1 : options.length; + + if ( index < 0 ) { + i = max; + + } else { + i = one ? index : 0; + } + + // Loop through all the selected options + for ( ; i < max; i++ ) { + option = options[ i ]; + + // Support: IE <=9 only + // IE8-9 doesn't update selected after form reset (#2551) + if ( ( option.selected || i === index ) && + + // Don't return options that are disabled or in a disabled optgroup + !option.disabled && + ( !option.parentNode.disabled || + !nodeName( option.parentNode, "optgroup" ) ) ) { + + // Get the specific value for the option + value = jQuery( option ).val(); + + // We don't need an array for one selects + if ( one ) { + return value; + } + + // Multi-Selects return an array + values.push( value ); + } + } + + return values; + }, + + set: function( elem, value ) { + var optionSet, option, + options = elem.options, + values = jQuery.makeArray( value ), + i = options.length; + + while ( i-- ) { + option = options[ i ]; + + /* eslint-disable no-cond-assign */ + + if ( option.selected = + jQuery.inArray( jQuery.valHooks.option.get( option ), values ) > -1 + ) { + optionSet = true; + } + + /* eslint-enable no-cond-assign */ + } + + // Force browsers to behave consistently when non-matching value is set + if ( !optionSet ) { + elem.selectedIndex = -1; + } + return values; + } + } + } +} ); + +// Radios and checkboxes getter/setter +jQuery.each( [ "radio", "checkbox" ], function() { + jQuery.valHooks[ this ] = { + set: function( elem, value ) { + if ( Array.isArray( value ) ) { + return ( elem.checked = jQuery.inArray( jQuery( elem ).val(), value ) > -1 ); + } + } + }; + if ( !support.checkOn ) { + jQuery.valHooks[ this ].get = function( elem ) { + return elem.getAttribute( "value" ) === null ? "on" : elem.value; + }; + } +} ); + + + + +// Return jQuery for attributes-only inclusion + + +support.focusin = "onfocusin" in window; + + +var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/, + stopPropagationCallback = function( e ) { + e.stopPropagation(); + }; + +jQuery.extend( jQuery.event, { + + trigger: function( event, data, elem, onlyHandlers ) { + + var i, cur, tmp, bubbleType, ontype, handle, special, lastElement, + eventPath = [ elem || document ], + type = hasOwn.call( event, "type" ) ? event.type : event, + namespaces = hasOwn.call( event, "namespace" ) ? event.namespace.split( "." ) : []; + + cur = lastElement = tmp = elem = elem || document; + + // Don't do events on text and comment nodes + if ( elem.nodeType === 3 || elem.nodeType === 8 ) { + return; + } + + // focus/blur morphs to focusin/out; ensure we're not firing them right now + if ( rfocusMorph.test( type + jQuery.event.triggered ) ) { + return; + } + + if ( type.indexOf( "." ) > -1 ) { + + // Namespaced trigger; create a regexp to match event type in handle() + namespaces = type.split( "." ); + type = namespaces.shift(); + namespaces.sort(); + } + ontype = type.indexOf( ":" ) < 0 && "on" + type; + + // Caller can pass in a jQuery.Event object, Object, or just an event type string + event = event[ jQuery.expando ] ? + event : + new jQuery.Event( type, typeof event === "object" && event ); + + // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true) + event.isTrigger = onlyHandlers ? 2 : 3; + event.namespace = namespaces.join( "." ); + event.rnamespace = event.namespace ? + new RegExp( "(^|\\.)" + namespaces.join( "\\.(?:.*\\.|)" ) + "(\\.|$)" ) : + null; + + // Clean up the event in case it is being reused + event.result = undefined; + if ( !event.target ) { + event.target = elem; + } + + // Clone any incoming data and prepend the event, creating the handler arg list + data = data == null ? + [ event ] : + jQuery.makeArray( data, [ event ] ); + + // Allow special events to draw outside the lines + special = jQuery.event.special[ type ] || {}; + if ( !onlyHandlers && special.trigger && special.trigger.apply( elem, data ) === false ) { + return; + } + + // Determine event propagation path in advance, per W3C events spec (#9951) + // Bubble up to document, then to window; watch for a global ownerDocument var (#9724) + if ( !onlyHandlers && !special.noBubble && !isWindow( elem ) ) { + + bubbleType = special.delegateType || type; + if ( !rfocusMorph.test( bubbleType + type ) ) { + cur = cur.parentNode; + } + for ( ; cur; cur = cur.parentNode ) { + eventPath.push( cur ); + tmp = cur; + } + + // Only add window if we got to document (e.g., not plain obj or detached DOM) + if ( tmp === ( elem.ownerDocument || document ) ) { + eventPath.push( tmp.defaultView || tmp.parentWindow || window ); + } + } + + // Fire handlers on the event path + i = 0; + while ( ( cur = eventPath[ i++ ] ) && !event.isPropagationStopped() ) { + lastElement = cur; + event.type = i > 1 ? + bubbleType : + special.bindType || type; + + // jQuery handler + handle = ( + dataPriv.get( cur, "events" ) || Object.create( null ) + )[ event.type ] && + dataPriv.get( cur, "handle" ); + if ( handle ) { + handle.apply( cur, data ); + } + + // Native handler + handle = ontype && cur[ ontype ]; + if ( handle && handle.apply && acceptData( cur ) ) { + event.result = handle.apply( cur, data ); + if ( event.result === false ) { + event.preventDefault(); + } + } + } + event.type = type; + + // If nobody prevented the default action, do it now + if ( !onlyHandlers && !event.isDefaultPrevented() ) { + + if ( ( !special._default || + special._default.apply( eventPath.pop(), data ) === false ) && + acceptData( elem ) ) { + + // Call a native DOM method on the target with the same name as the event. + // Don't do default actions on window, that's where global variables be (#6170) + if ( ontype && isFunction( elem[ type ] ) && !isWindow( elem ) ) { + + // Don't re-trigger an onFOO event when we call its FOO() method + tmp = elem[ ontype ]; + + if ( tmp ) { + elem[ ontype ] = null; + } + + // Prevent re-triggering of the same event, since we already bubbled it above + jQuery.event.triggered = type; + + if ( event.isPropagationStopped() ) { + lastElement.addEventListener( type, stopPropagationCallback ); + } + + elem[ type ](); + + if ( event.isPropagationStopped() ) { + lastElement.removeEventListener( type, stopPropagationCallback ); + } + + jQuery.event.triggered = undefined; + + if ( tmp ) { + elem[ ontype ] = tmp; + } + } + } + } + + return event.result; + }, + + // Piggyback on a donor event to simulate a different one + // Used only for `focus(in | out)` events + simulate: function( type, elem, event ) { + var e = jQuery.extend( + new jQuery.Event(), + event, + { + type: type, + isSimulated: true + } + ); + + jQuery.event.trigger( e, null, elem ); + } + +} ); + +jQuery.fn.extend( { + + trigger: function( type, data ) { + return this.each( function() { + jQuery.event.trigger( type, data, this ); + } ); + }, + triggerHandler: function( type, data ) { + var elem = this[ 0 ]; + if ( elem ) { + return jQuery.event.trigger( type, data, elem, true ); + } + } +} ); + + +// Support: Firefox <=44 +// Firefox doesn't have focus(in | out) events +// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787 +// +// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1 +// focus(in | out) events fire after focus & blur events, +// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order +// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857 +if ( !support.focusin ) { + jQuery.each( { focus: "focusin", blur: "focusout" }, function( orig, fix ) { + + // Attach a single capturing handler on the document while someone wants focusin/focusout + var handler = function( event ) { + jQuery.event.simulate( fix, event.target, jQuery.event.fix( event ) ); + }; + + jQuery.event.special[ fix ] = { + setup: function() { + + // Handle: regular nodes (via `this.ownerDocument`), window + // (via `this.document`) & document (via `this`). + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ); + + if ( !attaches ) { + doc.addEventListener( orig, handler, true ); + } + dataPriv.access( doc, fix, ( attaches || 0 ) + 1 ); + }, + teardown: function() { + var doc = this.ownerDocument || this.document || this, + attaches = dataPriv.access( doc, fix ) - 1; + + if ( !attaches ) { + doc.removeEventListener( orig, handler, true ); + dataPriv.remove( doc, fix ); + + } else { + dataPriv.access( doc, fix, attaches ); + } + } + }; + } ); +} +var location = window.location; + +var nonce = { guid: Date.now() }; + +var rquery = ( /\?/ ); + + + +// Cross-browser xml parsing +jQuery.parseXML = function( data ) { + var xml; + if ( !data || typeof data !== "string" ) { + return null; + } + + // Support: IE 9 - 11 only + // IE throws on parseFromString with invalid input. + try { + xml = ( new window.DOMParser() ).parseFromString( data, "text/xml" ); + } catch ( e ) { + xml = undefined; + } + + if ( !xml || xml.getElementsByTagName( "parsererror" ).length ) { + jQuery.error( "Invalid XML: " + data ); + } + return xml; +}; + + +var + rbracket = /\[\]$/, + rCRLF = /\r?\n/g, + rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i, + rsubmittable = /^(?:input|select|textarea|keygen)/i; + +function buildParams( prefix, obj, traditional, add ) { + var name; + + if ( Array.isArray( obj ) ) { + + // Serialize array item. + jQuery.each( obj, function( i, v ) { + if ( traditional || rbracket.test( prefix ) ) { + + // Treat each array item as a scalar. + add( prefix, v ); + + } else { + + // Item is non-scalar (array or object), encode its numeric index. + buildParams( + prefix + "[" + ( typeof v === "object" && v != null ? i : "" ) + "]", + v, + traditional, + add + ); + } + } ); + + } else if ( !traditional && toType( obj ) === "object" ) { + + // Serialize object item. + for ( name in obj ) { + buildParams( prefix + "[" + name + "]", obj[ name ], traditional, add ); + } + + } else { + + // Serialize scalar item. + add( prefix, obj ); + } +} + +// Serialize an array of form elements or a set of +// key/values into a query string +jQuery.param = function( a, traditional ) { + var prefix, + s = [], + add = function( key, valueOrFunction ) { + + // If value is a function, invoke it and use its return value + var value = isFunction( valueOrFunction ) ? + valueOrFunction() : + valueOrFunction; + + s[ s.length ] = encodeURIComponent( key ) + "=" + + encodeURIComponent( value == null ? "" : value ); + }; + + if ( a == null ) { + return ""; + } + + // If an array was passed in, assume that it is an array of form elements. + if ( Array.isArray( a ) || ( a.jquery && !jQuery.isPlainObject( a ) ) ) { + + // Serialize the form elements + jQuery.each( a, function() { + add( this.name, this.value ); + } ); + + } else { + + // If traditional, encode the "old" way (the way 1.3.2 or older + // did it), otherwise encode params recursively. + for ( prefix in a ) { + buildParams( prefix, a[ prefix ], traditional, add ); + } + } + + // Return the resulting serialization + return s.join( "&" ); +}; + +jQuery.fn.extend( { + serialize: function() { + return jQuery.param( this.serializeArray() ); + }, + serializeArray: function() { + return this.map( function() { + + // Can add propHook for "elements" to filter or add form elements + var elements = jQuery.prop( this, "elements" ); + return elements ? jQuery.makeArray( elements ) : this; + } ) + .filter( function() { + var type = this.type; + + // Use .is( ":disabled" ) so that fieldset[disabled] works + return this.name && !jQuery( this ).is( ":disabled" ) && + rsubmittable.test( this.nodeName ) && !rsubmitterTypes.test( type ) && + ( this.checked || !rcheckableType.test( type ) ); + } ) + .map( function( _i, elem ) { + var val = jQuery( this ).val(); + + if ( val == null ) { + return null; + } + + if ( Array.isArray( val ) ) { + return jQuery.map( val, function( val ) { + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ); + } + + return { name: elem.name, value: val.replace( rCRLF, "\r\n" ) }; + } ).get(); + } +} ); + + +var + r20 = /%20/g, + rhash = /#.*$/, + rantiCache = /([?&])_=[^&]*/, + rheaders = /^(.*?):[ \t]*([^\r\n]*)$/mg, + + // #7653, #8125, #8152: local protocol detection + rlocalProtocol = /^(?:about|app|app-storage|.+-extension|file|res|widget):$/, + rnoContent = /^(?:GET|HEAD)$/, + rprotocol = /^\/\//, + + /* Prefilters + * 1) They are useful to introduce custom dataTypes (see ajax/jsonp.js for an example) + * 2) These are called: + * - BEFORE asking for a transport + * - AFTER param serialization (s.data is a string if s.processData is true) + * 3) key is the dataType + * 4) the catchall symbol "*" can be used + * 5) execution will start with transport dataType and THEN continue down to "*" if needed + */ + prefilters = {}, + + /* Transports bindings + * 1) key is the dataType + * 2) the catchall symbol "*" can be used + * 3) selection will start with transport dataType and THEN go to "*" if needed + */ + transports = {}, + + // Avoid comment-prolog char sequence (#10098); must appease lint and evade compression + allTypes = "*/".concat( "*" ), + + // Anchor tag for parsing the document origin + originAnchor = document.createElement( "a" ); + originAnchor.href = location.href; + +// Base "constructor" for jQuery.ajaxPrefilter and jQuery.ajaxTransport +function addToPrefiltersOrTransports( structure ) { + + // dataTypeExpression is optional and defaults to "*" + return function( dataTypeExpression, func ) { + + if ( typeof dataTypeExpression !== "string" ) { + func = dataTypeExpression; + dataTypeExpression = "*"; + } + + var dataType, + i = 0, + dataTypes = dataTypeExpression.toLowerCase().match( rnothtmlwhite ) || []; + + if ( isFunction( func ) ) { + + // For each dataType in the dataTypeExpression + while ( ( dataType = dataTypes[ i++ ] ) ) { + + // Prepend if requested + if ( dataType[ 0 ] === "+" ) { + dataType = dataType.slice( 1 ) || "*"; + ( structure[ dataType ] = structure[ dataType ] || [] ).unshift( func ); + + // Otherwise append + } else { + ( structure[ dataType ] = structure[ dataType ] || [] ).push( func ); + } + } + } + }; +} + +// Base inspection function for prefilters and transports +function inspectPrefiltersOrTransports( structure, options, originalOptions, jqXHR ) { + + var inspected = {}, + seekingTransport = ( structure === transports ); + + function inspect( dataType ) { + var selected; + inspected[ dataType ] = true; + jQuery.each( structure[ dataType ] || [], function( _, prefilterOrFactory ) { + var dataTypeOrTransport = prefilterOrFactory( options, originalOptions, jqXHR ); + if ( typeof dataTypeOrTransport === "string" && + !seekingTransport && !inspected[ dataTypeOrTransport ] ) { + + options.dataTypes.unshift( dataTypeOrTransport ); + inspect( dataTypeOrTransport ); + return false; + } else if ( seekingTransport ) { + return !( selected = dataTypeOrTransport ); + } + } ); + return selected; + } + + return inspect( options.dataTypes[ 0 ] ) || !inspected[ "*" ] && inspect( "*" ); +} + +// A special extend for ajax options +// that takes "flat" options (not to be deep extended) +// Fixes #9887 +function ajaxExtend( target, src ) { + var key, deep, + flatOptions = jQuery.ajaxSettings.flatOptions || {}; + + for ( key in src ) { + if ( src[ key ] !== undefined ) { + ( flatOptions[ key ] ? target : ( deep || ( deep = {} ) ) )[ key ] = src[ key ]; + } + } + if ( deep ) { + jQuery.extend( true, target, deep ); + } + + return target; +} + +/* Handles responses to an ajax request: + * - finds the right dataType (mediates between content-type and expected dataType) + * - returns the corresponding response + */ +function ajaxHandleResponses( s, jqXHR, responses ) { + + var ct, type, finalDataType, firstDataType, + contents = s.contents, + dataTypes = s.dataTypes; + + // Remove auto dataType and get content-type in the process + while ( dataTypes[ 0 ] === "*" ) { + dataTypes.shift(); + if ( ct === undefined ) { + ct = s.mimeType || jqXHR.getResponseHeader( "Content-Type" ); + } + } + + // Check if we're dealing with a known content-type + if ( ct ) { + for ( type in contents ) { + if ( contents[ type ] && contents[ type ].test( ct ) ) { + dataTypes.unshift( type ); + break; + } + } + } + + // Check to see if we have a response for the expected dataType + if ( dataTypes[ 0 ] in responses ) { + finalDataType = dataTypes[ 0 ]; + } else { + + // Try convertible dataTypes + for ( type in responses ) { + if ( !dataTypes[ 0 ] || s.converters[ type + " " + dataTypes[ 0 ] ] ) { + finalDataType = type; + break; + } + if ( !firstDataType ) { + firstDataType = type; + } + } + + // Or just use first one + finalDataType = finalDataType || firstDataType; + } + + // If we found a dataType + // We add the dataType to the list if needed + // and return the corresponding response + if ( finalDataType ) { + if ( finalDataType !== dataTypes[ 0 ] ) { + dataTypes.unshift( finalDataType ); + } + return responses[ finalDataType ]; + } +} + +/* Chain conversions given the request and the original response + * Also sets the responseXXX fields on the jqXHR instance + */ +function ajaxConvert( s, response, jqXHR, isSuccess ) { + var conv2, current, conv, tmp, prev, + converters = {}, + + // Work with a copy of dataTypes in case we need to modify it for conversion + dataTypes = s.dataTypes.slice(); + + // Create converters map with lowercased keys + if ( dataTypes[ 1 ] ) { + for ( conv in s.converters ) { + converters[ conv.toLowerCase() ] = s.converters[ conv ]; + } + } + + current = dataTypes.shift(); + + // Convert to each sequential dataType + while ( current ) { + + if ( s.responseFields[ current ] ) { + jqXHR[ s.responseFields[ current ] ] = response; + } + + // Apply the dataFilter if provided + if ( !prev && isSuccess && s.dataFilter ) { + response = s.dataFilter( response, s.dataType ); + } + + prev = current; + current = dataTypes.shift(); + + if ( current ) { + + // There's only work to do if current dataType is non-auto + if ( current === "*" ) { + + current = prev; + + // Convert response if prev dataType is non-auto and differs from current + } else if ( prev !== "*" && prev !== current ) { + + // Seek a direct converter + conv = converters[ prev + " " + current ] || converters[ "* " + current ]; + + // If none found, seek a pair + if ( !conv ) { + for ( conv2 in converters ) { + + // If conv2 outputs current + tmp = conv2.split( " " ); + if ( tmp[ 1 ] === current ) { + + // If prev can be converted to accepted input + conv = converters[ prev + " " + tmp[ 0 ] ] || + converters[ "* " + tmp[ 0 ] ]; + if ( conv ) { + + // Condense equivalence converters + if ( conv === true ) { + conv = converters[ conv2 ]; + + // Otherwise, insert the intermediate dataType + } else if ( converters[ conv2 ] !== true ) { + current = tmp[ 0 ]; + dataTypes.unshift( tmp[ 1 ] ); + } + break; + } + } + } + } + + // Apply converter (if not an equivalence) + if ( conv !== true ) { + + // Unless errors are allowed to bubble, catch and return them + if ( conv && s.throws ) { + response = conv( response ); + } else { + try { + response = conv( response ); + } catch ( e ) { + return { + state: "parsererror", + error: conv ? e : "No conversion from " + prev + " to " + current + }; + } + } + } + } + } + } + + return { state: "success", data: response }; +} + +jQuery.extend( { + + // Counter for holding the number of active queries + active: 0, + + // Last-Modified header cache for next request + lastModified: {}, + etag: {}, + + ajaxSettings: { + url: location.href, + type: "GET", + isLocal: rlocalProtocol.test( location.protocol ), + global: true, + processData: true, + async: true, + contentType: "application/x-www-form-urlencoded; charset=UTF-8", + + /* + timeout: 0, + data: null, + dataType: null, + username: null, + password: null, + cache: null, + throws: false, + traditional: false, + headers: {}, + */ + + accepts: { + "*": allTypes, + text: "text/plain", + html: "text/html", + xml: "application/xml, text/xml", + json: "application/json, text/javascript" + }, + + contents: { + xml: /\bxml\b/, + html: /\bhtml/, + json: /\bjson\b/ + }, + + responseFields: { + xml: "responseXML", + text: "responseText", + json: "responseJSON" + }, + + // Data converters + // Keys separate source (or catchall "*") and destination types with a single space + converters: { + + // Convert anything to text + "* text": String, + + // Text to html (true = no transformation) + "text html": true, + + // Evaluate text as a json expression + "text json": JSON.parse, + + // Parse text as xml + "text xml": jQuery.parseXML + }, + + // For options that shouldn't be deep extended: + // you can add your own custom options here if + // and when you create one that shouldn't be + // deep extended (see ajaxExtend) + flatOptions: { + url: true, + context: true + } + }, + + // Creates a full fledged settings object into target + // with both ajaxSettings and settings fields. + // If target is omitted, writes into ajaxSettings. + ajaxSetup: function( target, settings ) { + return settings ? + + // Building a settings object + ajaxExtend( ajaxExtend( target, jQuery.ajaxSettings ), settings ) : + + // Extending ajaxSettings + ajaxExtend( jQuery.ajaxSettings, target ); + }, + + ajaxPrefilter: addToPrefiltersOrTransports( prefilters ), + ajaxTransport: addToPrefiltersOrTransports( transports ), + + // Main method + ajax: function( url, options ) { + + // If url is an object, simulate pre-1.5 signature + if ( typeof url === "object" ) { + options = url; + url = undefined; + } + + // Force options to be an object + options = options || {}; + + var transport, + + // URL without anti-cache param + cacheURL, + + // Response headers + responseHeadersString, + responseHeaders, + + // timeout handle + timeoutTimer, + + // Url cleanup var + urlAnchor, + + // Request state (becomes false upon send and true upon completion) + completed, + + // To know if global events are to be dispatched + fireGlobals, + + // Loop variable + i, + + // uncached part of the url + uncached, + + // Create the final options object + s = jQuery.ajaxSetup( {}, options ), + + // Callbacks context + callbackContext = s.context || s, + + // Context for global events is callbackContext if it is a DOM node or jQuery collection + globalEventContext = s.context && + ( callbackContext.nodeType || callbackContext.jquery ) ? + jQuery( callbackContext ) : + jQuery.event, + + // Deferreds + deferred = jQuery.Deferred(), + completeDeferred = jQuery.Callbacks( "once memory" ), + + // Status-dependent callbacks + statusCode = s.statusCode || {}, + + // Headers (they are sent all at once) + requestHeaders = {}, + requestHeadersNames = {}, + + // Default abort message + strAbort = "canceled", + + // Fake xhr + jqXHR = { + readyState: 0, + + // Builds headers hashtable if needed + getResponseHeader: function( key ) { + var match; + if ( completed ) { + if ( !responseHeaders ) { + responseHeaders = {}; + while ( ( match = rheaders.exec( responseHeadersString ) ) ) { + responseHeaders[ match[ 1 ].toLowerCase() + " " ] = + ( responseHeaders[ match[ 1 ].toLowerCase() + " " ] || [] ) + .concat( match[ 2 ] ); + } + } + match = responseHeaders[ key.toLowerCase() + " " ]; + } + return match == null ? null : match.join( ", " ); + }, + + // Raw string + getAllResponseHeaders: function() { + return completed ? responseHeadersString : null; + }, + + // Caches the header + setRequestHeader: function( name, value ) { + if ( completed == null ) { + name = requestHeadersNames[ name.toLowerCase() ] = + requestHeadersNames[ name.toLowerCase() ] || name; + requestHeaders[ name ] = value; + } + return this; + }, + + // Overrides response content-type header + overrideMimeType: function( type ) { + if ( completed == null ) { + s.mimeType = type; + } + return this; + }, + + // Status-dependent callbacks + statusCode: function( map ) { + var code; + if ( map ) { + if ( completed ) { + + // Execute the appropriate callbacks + jqXHR.always( map[ jqXHR.status ] ); + } else { + + // Lazy-add the new callbacks in a way that preserves old ones + for ( code in map ) { + statusCode[ code ] = [ statusCode[ code ], map[ code ] ]; + } + } + } + return this; + }, + + // Cancel the request + abort: function( statusText ) { + var finalText = statusText || strAbort; + if ( transport ) { + transport.abort( finalText ); + } + done( 0, finalText ); + return this; + } + }; + + // Attach deferreds + deferred.promise( jqXHR ); + + // Add protocol if not provided (prefilters might expect it) + // Handle falsy url in the settings object (#10093: consistency with old signature) + // We also use the url parameter if available + s.url = ( ( url || s.url || location.href ) + "" ) + .replace( rprotocol, location.protocol + "//" ); + + // Alias method option to type as per ticket #12004 + s.type = options.method || options.type || s.method || s.type; + + // Extract dataTypes list + s.dataTypes = ( s.dataType || "*" ).toLowerCase().match( rnothtmlwhite ) || [ "" ]; + + // A cross-domain request is in order when the origin doesn't match the current origin. + if ( s.crossDomain == null ) { + urlAnchor = document.createElement( "a" ); + + // Support: IE <=8 - 11, Edge 12 - 15 + // IE throws exception on accessing the href property if url is malformed, + // e.g. http://example.com:80x/ + try { + urlAnchor.href = s.url; + + // Support: IE <=8 - 11 only + // Anchor's host property isn't correctly set when s.url is relative + urlAnchor.href = urlAnchor.href; + s.crossDomain = originAnchor.protocol + "//" + originAnchor.host !== + urlAnchor.protocol + "//" + urlAnchor.host; + } catch ( e ) { + + // If there is an error parsing the URL, assume it is crossDomain, + // it can be rejected by the transport if it is invalid + s.crossDomain = true; + } + } + + // Convert data if not already a string + if ( s.data && s.processData && typeof s.data !== "string" ) { + s.data = jQuery.param( s.data, s.traditional ); + } + + // Apply prefilters + inspectPrefiltersOrTransports( prefilters, s, options, jqXHR ); + + // If request was aborted inside a prefilter, stop there + if ( completed ) { + return jqXHR; + } + + // We can fire global events as of now if asked to + // Don't fire events if jQuery.event is undefined in an AMD-usage scenario (#15118) + fireGlobals = jQuery.event && s.global; + + // Watch for a new set of requests + if ( fireGlobals && jQuery.active++ === 0 ) { + jQuery.event.trigger( "ajaxStart" ); + } + + // Uppercase the type + s.type = s.type.toUpperCase(); + + // Determine if request has content + s.hasContent = !rnoContent.test( s.type ); + + // Save the URL in case we're toying with the If-Modified-Since + // and/or If-None-Match header later on + // Remove hash to simplify url manipulation + cacheURL = s.url.replace( rhash, "" ); + + // More options handling for requests with no content + if ( !s.hasContent ) { + + // Remember the hash so we can put it back + uncached = s.url.slice( cacheURL.length ); + + // If data is available and should be processed, append data to url + if ( s.data && ( s.processData || typeof s.data === "string" ) ) { + cacheURL += ( rquery.test( cacheURL ) ? "&" : "?" ) + s.data; + + // #9682: remove data so that it's not used in an eventual retry + delete s.data; + } + + // Add or update anti-cache param if needed + if ( s.cache === false ) { + cacheURL = cacheURL.replace( rantiCache, "$1" ); + uncached = ( rquery.test( cacheURL ) ? "&" : "?" ) + "_=" + ( nonce.guid++ ) + + uncached; + } + + // Put hash and anti-cache on the URL that will be requested (gh-1732) + s.url = cacheURL + uncached; + + // Change '%20' to '+' if this is encoded form body content (gh-2658) + } else if ( s.data && s.processData && + ( s.contentType || "" ).indexOf( "application/x-www-form-urlencoded" ) === 0 ) { + s.data = s.data.replace( r20, "+" ); + } + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + if ( jQuery.lastModified[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-Modified-Since", jQuery.lastModified[ cacheURL ] ); + } + if ( jQuery.etag[ cacheURL ] ) { + jqXHR.setRequestHeader( "If-None-Match", jQuery.etag[ cacheURL ] ); + } + } + + // Set the correct header, if data is being sent + if ( s.data && s.hasContent && s.contentType !== false || options.contentType ) { + jqXHR.setRequestHeader( "Content-Type", s.contentType ); + } + + // Set the Accepts header for the server, depending on the dataType + jqXHR.setRequestHeader( + "Accept", + s.dataTypes[ 0 ] && s.accepts[ s.dataTypes[ 0 ] ] ? + s.accepts[ s.dataTypes[ 0 ] ] + + ( s.dataTypes[ 0 ] !== "*" ? ", " + allTypes + "; q=0.01" : "" ) : + s.accepts[ "*" ] + ); + + // Check for headers option + for ( i in s.headers ) { + jqXHR.setRequestHeader( i, s.headers[ i ] ); + } + + // Allow custom headers/mimetypes and early abort + if ( s.beforeSend && + ( s.beforeSend.call( callbackContext, jqXHR, s ) === false || completed ) ) { + + // Abort if not done already and return + return jqXHR.abort(); + } + + // Aborting is no longer a cancellation + strAbort = "abort"; + + // Install callbacks on deferreds + completeDeferred.add( s.complete ); + jqXHR.done( s.success ); + jqXHR.fail( s.error ); + + // Get transport + transport = inspectPrefiltersOrTransports( transports, s, options, jqXHR ); + + // If no transport, we auto-abort + if ( !transport ) { + done( -1, "No Transport" ); + } else { + jqXHR.readyState = 1; + + // Send global event + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxSend", [ jqXHR, s ] ); + } + + // If request was aborted inside ajaxSend, stop there + if ( completed ) { + return jqXHR; + } + + // Timeout + if ( s.async && s.timeout > 0 ) { + timeoutTimer = window.setTimeout( function() { + jqXHR.abort( "timeout" ); + }, s.timeout ); + } + + try { + completed = false; + transport.send( requestHeaders, done ); + } catch ( e ) { + + // Rethrow post-completion exceptions + if ( completed ) { + throw e; + } + + // Propagate others as results + done( -1, e ); + } + } + + // Callback for when everything is done + function done( status, nativeStatusText, responses, headers ) { + var isSuccess, success, error, response, modified, + statusText = nativeStatusText; + + // Ignore repeat invocations + if ( completed ) { + return; + } + + completed = true; + + // Clear timeout if it exists + if ( timeoutTimer ) { + window.clearTimeout( timeoutTimer ); + } + + // Dereference transport for early garbage collection + // (no matter how long the jqXHR object will be used) + transport = undefined; + + // Cache response headers + responseHeadersString = headers || ""; + + // Set readyState + jqXHR.readyState = status > 0 ? 4 : 0; + + // Determine if successful + isSuccess = status >= 200 && status < 300 || status === 304; + + // Get response data + if ( responses ) { + response = ajaxHandleResponses( s, jqXHR, responses ); + } + + // Use a noop converter for missing script + if ( !isSuccess && jQuery.inArray( "script", s.dataTypes ) > -1 ) { + s.converters[ "text script" ] = function() {}; + } + + // Convert no matter what (that way responseXXX fields are always set) + response = ajaxConvert( s, response, jqXHR, isSuccess ); + + // If successful, handle type chaining + if ( isSuccess ) { + + // Set the If-Modified-Since and/or If-None-Match header, if in ifModified mode. + if ( s.ifModified ) { + modified = jqXHR.getResponseHeader( "Last-Modified" ); + if ( modified ) { + jQuery.lastModified[ cacheURL ] = modified; + } + modified = jqXHR.getResponseHeader( "etag" ); + if ( modified ) { + jQuery.etag[ cacheURL ] = modified; + } + } + + // if no content + if ( status === 204 || s.type === "HEAD" ) { + statusText = "nocontent"; + + // if not modified + } else if ( status === 304 ) { + statusText = "notmodified"; + + // If we have data, let's convert it + } else { + statusText = response.state; + success = response.data; + error = response.error; + isSuccess = !error; + } + } else { + + // Extract error from statusText and normalize for non-aborts + error = statusText; + if ( status || !statusText ) { + statusText = "error"; + if ( status < 0 ) { + status = 0; + } + } + } + + // Set data for the fake xhr object + jqXHR.status = status; + jqXHR.statusText = ( nativeStatusText || statusText ) + ""; + + // Success/Error + if ( isSuccess ) { + deferred.resolveWith( callbackContext, [ success, statusText, jqXHR ] ); + } else { + deferred.rejectWith( callbackContext, [ jqXHR, statusText, error ] ); + } + + // Status-dependent callbacks + jqXHR.statusCode( statusCode ); + statusCode = undefined; + + if ( fireGlobals ) { + globalEventContext.trigger( isSuccess ? "ajaxSuccess" : "ajaxError", + [ jqXHR, s, isSuccess ? success : error ] ); + } + + // Complete + completeDeferred.fireWith( callbackContext, [ jqXHR, statusText ] ); + + if ( fireGlobals ) { + globalEventContext.trigger( "ajaxComplete", [ jqXHR, s ] ); + + // Handle the global AJAX counter + if ( !( --jQuery.active ) ) { + jQuery.event.trigger( "ajaxStop" ); + } + } + } + + return jqXHR; + }, + + getJSON: function( url, data, callback ) { + return jQuery.get( url, data, callback, "json" ); + }, + + getScript: function( url, callback ) { + return jQuery.get( url, undefined, callback, "script" ); + } +} ); + +jQuery.each( [ "get", "post" ], function( _i, method ) { + jQuery[ method ] = function( url, data, callback, type ) { + + // Shift arguments if data argument was omitted + if ( isFunction( data ) ) { + type = type || callback; + callback = data; + data = undefined; + } + + // The url can be an options object (which then must have .url) + return jQuery.ajax( jQuery.extend( { + url: url, + type: method, + dataType: type, + data: data, + success: callback + }, jQuery.isPlainObject( url ) && url ) ); + }; +} ); + +jQuery.ajaxPrefilter( function( s ) { + var i; + for ( i in s.headers ) { + if ( i.toLowerCase() === "content-type" ) { + s.contentType = s.headers[ i ] || ""; + } + } +} ); + + +jQuery._evalUrl = function( url, options, doc ) { + return jQuery.ajax( { + url: url, + + // Make this explicit, since user can override this through ajaxSetup (#11264) + type: "GET", + dataType: "script", + cache: true, + async: false, + global: false, + + // Only evaluate the response if it is successful (gh-4126) + // dataFilter is not invoked for failure responses, so using it instead + // of the default converter is kludgy but it works. + converters: { + "text script": function() {} + }, + dataFilter: function( response ) { + jQuery.globalEval( response, options, doc ); + } + } ); +}; + + +jQuery.fn.extend( { + wrapAll: function( html ) { + var wrap; + + if ( this[ 0 ] ) { + if ( isFunction( html ) ) { + html = html.call( this[ 0 ] ); + } + + // The elements to wrap the target around + wrap = jQuery( html, this[ 0 ].ownerDocument ).eq( 0 ).clone( true ); + + if ( this[ 0 ].parentNode ) { + wrap.insertBefore( this[ 0 ] ); + } + + wrap.map( function() { + var elem = this; + + while ( elem.firstElementChild ) { + elem = elem.firstElementChild; + } + + return elem; + } ).append( this ); + } + + return this; + }, + + wrapInner: function( html ) { + if ( isFunction( html ) ) { + return this.each( function( i ) { + jQuery( this ).wrapInner( html.call( this, i ) ); + } ); + } + + return this.each( function() { + var self = jQuery( this ), + contents = self.contents(); + + if ( contents.length ) { + contents.wrapAll( html ); + + } else { + self.append( html ); + } + } ); + }, + + wrap: function( html ) { + var htmlIsFunction = isFunction( html ); + + return this.each( function( i ) { + jQuery( this ).wrapAll( htmlIsFunction ? html.call( this, i ) : html ); + } ); + }, + + unwrap: function( selector ) { + this.parent( selector ).not( "body" ).each( function() { + jQuery( this ).replaceWith( this.childNodes ); + } ); + return this; + } +} ); + + +jQuery.expr.pseudos.hidden = function( elem ) { + return !jQuery.expr.pseudos.visible( elem ); +}; +jQuery.expr.pseudos.visible = function( elem ) { + return !!( elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length ); +}; + + + + +jQuery.ajaxSettings.xhr = function() { + try { + return new window.XMLHttpRequest(); + } catch ( e ) {} +}; + +var xhrSuccessStatus = { + + // File protocol always yields status code 0, assume 200 + 0: 200, + + // Support: IE <=9 only + // #1450: sometimes IE returns 1223 when it should be 204 + 1223: 204 + }, + xhrSupported = jQuery.ajaxSettings.xhr(); + +support.cors = !!xhrSupported && ( "withCredentials" in xhrSupported ); +support.ajax = xhrSupported = !!xhrSupported; + +jQuery.ajaxTransport( function( options ) { + var callback, errorCallback; + + // Cross domain only allowed if supported through XMLHttpRequest + if ( support.cors || xhrSupported && !options.crossDomain ) { + return { + send: function( headers, complete ) { + var i, + xhr = options.xhr(); + + xhr.open( + options.type, + options.url, + options.async, + options.username, + options.password + ); + + // Apply custom fields if provided + if ( options.xhrFields ) { + for ( i in options.xhrFields ) { + xhr[ i ] = options.xhrFields[ i ]; + } + } + + // Override mime type if needed + if ( options.mimeType && xhr.overrideMimeType ) { + xhr.overrideMimeType( options.mimeType ); + } + + // X-Requested-With header + // For cross-domain requests, seeing as conditions for a preflight are + // akin to a jigsaw puzzle, we simply never set it to be sure. + // (it can always be set on a per-request basis or even using ajaxSetup) + // For same-domain requests, won't change header if already provided. + if ( !options.crossDomain && !headers[ "X-Requested-With" ] ) { + headers[ "X-Requested-With" ] = "XMLHttpRequest"; + } + + // Set headers + for ( i in headers ) { + xhr.setRequestHeader( i, headers[ i ] ); + } + + // Callback + callback = function( type ) { + return function() { + if ( callback ) { + callback = errorCallback = xhr.onload = + xhr.onerror = xhr.onabort = xhr.ontimeout = + xhr.onreadystatechange = null; + + if ( type === "abort" ) { + xhr.abort(); + } else if ( type === "error" ) { + + // Support: IE <=9 only + // On a manual native abort, IE9 throws + // errors on any property access that is not readyState + if ( typeof xhr.status !== "number" ) { + complete( 0, "error" ); + } else { + complete( + + // File: protocol always yields status 0; see #8605, #14207 + xhr.status, + xhr.statusText + ); + } + } else { + complete( + xhrSuccessStatus[ xhr.status ] || xhr.status, + xhr.statusText, + + // Support: IE <=9 only + // IE9 has no XHR2 but throws on binary (trac-11426) + // For XHR2 non-text, let the caller handle it (gh-2498) + ( xhr.responseType || "text" ) !== "text" || + typeof xhr.responseText !== "string" ? + { binary: xhr.response } : + { text: xhr.responseText }, + xhr.getAllResponseHeaders() + ); + } + } + }; + }; + + // Listen to events + xhr.onload = callback(); + errorCallback = xhr.onerror = xhr.ontimeout = callback( "error" ); + + // Support: IE 9 only + // Use onreadystatechange to replace onabort + // to handle uncaught aborts + if ( xhr.onabort !== undefined ) { + xhr.onabort = errorCallback; + } else { + xhr.onreadystatechange = function() { + + // Check readyState before timeout as it changes + if ( xhr.readyState === 4 ) { + + // Allow onerror to be called first, + // but that will not handle a native abort + // Also, save errorCallback to a variable + // as xhr.onerror cannot be accessed + window.setTimeout( function() { + if ( callback ) { + errorCallback(); + } + } ); + } + }; + } + + // Create the abort callback + callback = callback( "abort" ); + + try { + + // Do send the request (this may raise an exception) + xhr.send( options.hasContent && options.data || null ); + } catch ( e ) { + + // #14683: Only rethrow if this hasn't been notified as an error yet + if ( callback ) { + throw e; + } + } + }, + + abort: function() { + if ( callback ) { + callback(); + } + } + }; + } +} ); + + + + +// Prevent auto-execution of scripts when no explicit dataType was provided (See gh-2432) +jQuery.ajaxPrefilter( function( s ) { + if ( s.crossDomain ) { + s.contents.script = false; + } +} ); + +// Install script dataType +jQuery.ajaxSetup( { + accepts: { + script: "text/javascript, application/javascript, " + + "application/ecmascript, application/x-ecmascript" + }, + contents: { + script: /\b(?:java|ecma)script\b/ + }, + converters: { + "text script": function( text ) { + jQuery.globalEval( text ); + return text; + } + } +} ); + +// Handle cache's special case and crossDomain +jQuery.ajaxPrefilter( "script", function( s ) { + if ( s.cache === undefined ) { + s.cache = false; + } + if ( s.crossDomain ) { + s.type = "GET"; + } +} ); + +// Bind script tag hack transport +jQuery.ajaxTransport( "script", function( s ) { + + // This transport only deals with cross domain or forced-by-attrs requests + if ( s.crossDomain || s.scriptAttrs ) { + var script, callback; + return { + send: function( _, complete ) { + script = jQuery( " + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Contributing to Scylla Operator

+
+

Prerequisites

+

To develop on scylla-operator, your environment must have the following:

+
    +
  1. Go 1.13

    +
      +
    • Make sure GOPATH is set to GOPATH=$HOME/go.

    • +
    +
  2. +
  3. Kustomize v3.1.0

  4. +
  5. kubebuilder v2.3.1

  6. +
  7. Docker

  8. +
  9. Git client installed

  10. +
  11. Github account

  12. +
+

To install all dependencies (Go, kustomize, kubebuilder, dep), simply run:

+
./install-dependencies.sh
+
+
+
+
+

Initial Setup

+
+

Create a Fork

+

From your browser navigate to http://github.com/scylladb/scylla-operator and click the “Fork” button.

+
+
+

Clone Your Fork

+

Open a console window and do the following:

+
# Create the scylla operator repo path
+mkdir -p $GOPATH/src/github.com/scylladb
+
+# Navigate to the local repo path and clone your fork
+cd $GOPATH/src/github.com/scylladb
+
+# Clone your fork, where <user> is your GitHub account name
+git clone https://github.com/<user>/scylla-operator.git
+
+
+
+
+

Add Upstream Remote

+

First you will need to add the upstream remote to your local git:

+
# Add 'upstream' to the list of remotes
+git remote add upstream https://github.com/scylladb/scylla-operator.git
+
+# Verify the remote was added
+git remote -v
+
+
+

Now you should have at least origin and upstream remotes. You can also add other remotes to collaborate with other contributors.

+
+
+
+

Development

+

To add a feature or to make a bug fix, you will need to create a branch in your fork and then submit a pull request (PR) from the branch.

+
+

Building the project

+

You can build the project using the Makefile commands:

+
    +
  • Open the Makefile and change the IMG environment variable to a repository you have access to.

  • +
  • Run make docker-push and wait for the image to be built and uploaded in your repo.

  • +
+
+
+

Create a Branch

+

From a console, create a new branch based on your fork and start working on it:

+
# Ensure all your remotes are up to date with the latest
+git fetch --all
+
+# Create a new branch that is based off upstream master.  Give it a simple, but descriptive name.
+# Generally it will be two to three words separated by dashes and without numbers.
+git checkout -b feature-name upstream/master
+
+
+

Now you are ready to make the changes and commit to your branch.

+
+
+

Updating Your Fork

+

During the development lifecycle, you will need to keep up-to-date with the latest upstream master. As others on the team push changes, you will need to rebase your commits on top of the latest. This avoids unnecessary merge commits and keeps the commit history clean.

+

Whenever you need to update your local repository, you never want to merge. You always will rebase. Otherwise you will end up with merge commits in the git history. If you have any modified files, you will first have to stash them (git stash save -u "<some description>").

+
git fetch --all
+git rebase upstream/master
+
+
+

Rebasing is a very powerful feature of Git. You need to understand how it works or else you will risk losing your work. Read about it in the Git documentation, it will be well worth it. In a nutshell, rebasing does the following:

+
    +
  • “Unwinds” your local commits. Your local commits are removed temporarily from the history.

  • +
  • The latest changes from upstream are added to the history

  • +
  • Your local commits are re-applied one by one

  • +
  • If there are merge conflicts, you will be prompted to fix them before continuing. Read the output closely. It will tell you how to complete the rebase.

  • +
  • When done rebasing, you will see all of your commits in the history.

  • +
+
+
+
+

Submitting a Pull Request

+

Once you have implemented the feature or bug fix in your branch, you will open a PR to the upstream repo. Before opening the PR ensure you have added unit tests, are passing the integration tests, cleaned your commit history, and have rebased on the latest upstream.

+

In order to open a pull request (PR) it is required to be up to date with the latest changes upstream. If other commits are pushed upstream before your PR is merged, you will also need to rebase again before it will be merged.

+
+

Commit History

+

To prepare your branch to open a PR, you will need to have the minimal number of logical commits so we can maintain +a clean commit history. Most commonly a PR will include a single commit where all changes are squashed, although +sometimes there will be multiple logical commits.

+
# Inspect your commit history to determine if you need to squash commits
+git log
+
+# Rebase the commits and edit, squash, or even reorder them as you determine will keep the history clean.
+# In this example, the last 5 commits will be opened in the git rebase tool.
+git rebase -i HEAD~5
+
+
+

Once your commit history is clean, ensure you have based on the latest upstream before you open the PR.

+
+
+

Commit messages

+

Please make the first line of your commit message a summary of the change that a user (not a developer) of Operator would like to read, +and prefix it with the most relevant directory of the change followed by a colon. +The changelog gets made by looking at just these first lines so make it good!

+

If you have more to say about the commit, then enter a blank line and carry on the description. +Remember to say why the change was needed - the commit itself shows what was changed.

+

Writing more is better than less. Comparing the behaviour before the change to that after the change is very useful. +Imagine you are writing to yourself in 12 months time when you’ve forgotten everything about what you just did, and you need to get up to speed quickly.

+

If the change fixes an issue then write Fixes #1234 in the commit message. +This can be on the subject line if it will fit. If you don’t want to close the associated issue just put #1234 and the change will get linked into the issue.

+

Here is an example of a short commit message:

+
sidecar: log on reconcile loop - fixes #1234
+
+
+

And here is an example of a longer one:

+

+api: now supports host networking (#1234)
+
+The operator CRD now has a "network" property that can be used to
+select host networking as well as setting the apropriate DNS policy.
+
+Fixes #1234
+
+
+
+
+

Submitting

+

Go to the Scylla Operator github to open the PR. If you have pushed recently, you should see an obvious link to open the PR. If you have not pushed recently, go to the Pull Request tab and select your fork and branch for the PR.

+

After the PR is open, you can make changes simply by pushing new commits. Your PR will track the changes in your fork and update automatically.

+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/eks.html b/v1.9/eks.html new file mode 100644 index 00000000000..f9676e16422 --- /dev/null +++ b/v1.9/eks.html @@ -0,0 +1,729 @@ + + + + + + + + + + + + + Deploying Scylla on EKS | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on EKS

+

This guide is focused on deploying Scylla on EKS with improved performance. +Performance tricks used by the script won’t work with different machine tiers. +It sets up the kubelets on EKS nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+
+# From inside the examples/eks folder
+cd examples/eks
+./eks.sh -z "$EKS_ZONES" -r "$EKS_REGION"
+
+
+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

EKS Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
EKS_REGION=us-east-1
+EKS_ZONES=us-east-1a,us-east-1b,us-east-1c
+CLUSTER_NAME=scylla-demo
+
+
+
+
+

Creating an EKS cluster

+

For this guide, we’ll create an EKS cluster with the following:

+
    +
  • A NodeGroup of 3 i3-2xlarge Nodes, where the Scylla Pods will be deployed. These nodes will only accept pods having scylla-clusters toleration.

  • +
+
  - name: scylla-pool
+    instanceType: i3.2xlarge
+    desiredCapacity: 3
+    labels:
+      pool: "scylla-pool"
+    taints:
+      role: "scylla-clusters:NoSchedule"
+    ssh:
+      allow: true
+    kubeletExtraConfig:
+      cpuManagerPolicy: static
+
+
+
    +
  • A NodeGroup of 4 c4.2xlarge Nodes to deploy cassandra-stress later on. These nodes will only accept pods having cassandra-stress toleration.

  • +
+
  - name: cassandra-stress-pool
+    instanceType: c4.2xlarge
+    desiredCapacity: 4
+    labels:
+      pool: "cassandra-stress-pool"
+    taints:
+      role: "cassandra-stress:NoSchedule"
+    ssh:
+      allow: true
+
+
+
    +
  • A NodeGroup of 1 i3.large Node, where the monitoring stack and operator will be deployed.

  • +
+
  - name: monitoring-pool
+    instanceType: i3.large
+    desiredCapacity: 1
+    labels:
+      pool: "monitoring-pool"
+    ssh:
+      allow: true
+
+
+
+
+
+

Installing Required Tools

+
+

Installing script third party dependencies

+

Script requires several dependencies:

+
    +
  • Helm - See: https://docs.helm.sh/using_helm/#installing-helm

  • +
  • eksctl - See: https://docs.aws.amazon.com/eks/latest/userguide/getting-started-eksctl.html

  • +
  • kubectl - See: https://kubernetes.io/docs/tasks/tools/install-kubectl/

  • +
+
+
+

Install the local provisioner

+

We deploy the local volume provisioner, which will discover their mount points and make them available as PersistentVolumes.

+
helm install local-provisioner examples/common/provisioner
+
+
+
+
+

Deploy tuning DaemonSet

+

Deploy tuning DaemonSet, this will configure your disks and apply several optimizations

+
kubectl apply -f node-setup-daemonset.yaml
+
+
+
+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting an EKS cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
eksctl delete cluster "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/generic.html b/v1.9/generic.html new file mode 100644 index 00000000000..c793196d358 --- /dev/null +++ b/v1.9/generic.html @@ -0,0 +1,952 @@ + + + + + + + + + + + + + Deploying Scylla on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on a Kubernetes Cluster

+

This is a guide to deploy a Scylla Cluster in a generic Kubernetes environment, meaning that Scylla will not be deployed with the ideal performance. +Scylla performs the best when it has fast disks and direct access to the cpu. +This requires some extra setup, which is platform-specific. +For specific configuration and setup, check for details about your particular environment:

+ +
+

Prerequisites

+ +
+
+

Running locally

+

Running kubernetes locally is a daunting and error prone task. +Fortunately there are ways to make life easier and Minikube makes it a breeze.

+

We need to give minikube a little bit more resources than default so start minikube like this:

+
minikube start --cpus=6
+
+
+

Then make kubectl aware of this local installation like this:

+
eval $(minikube docker-env)
+
+
+
+
+

Download Scylla Operator

+

In this guide you will be using the examples and manifests from Scylla Operator repository, so start off by cloning it to your local machine.

+
git clone git@github.com:scylladb/scylla-operator.git
+cd scylla-operator
+
+
+
+
+

Deploy Cert Manager

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

This will install Cert Manager to provision a self-signed certificate.

+

Once it’s deployed, wait until Cert Manager is ready:

+
kubectl wait --for condition=established crd/certificates.cert-manager.io crd/issuers.cert-manager.io
+kubectl -n cert-manager rollout status deployment.apps/cert-manager-webhook
+
+
+
+
+

Deploy Scylla Operator

+

Deploy the Scylla Operator using the following commands:

+
kubectl apply -f examples/common/operator.yaml
+
+
+

This will install the operator in namespace scylla-operator. +Wait until it’s ready:

+
kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
+kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
+
+
+

If you want to check the logs of the operator you can do so with:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+
+
+

Create and Initialize a Scylla Cluster

+

Now that the operator is running, we can create an instance of a Scylla cluster by creating an instance of the clusters.scylla.scylladb.com resource. +Some of that resource’s values are configurable, so feel free to browse cluster.yaml and tweak the settings to your liking. +Full details for all the configuration options can be found in the Scylla Cluster CRD documentation.

+

When you are ready to create a Scylla cluster, simply run:

+
kubectl create -f examples/generic/cluster.yaml
+
+
+

We can verify that a Kubernetes object has been created that represents our new Scylla cluster with the command below. +This is important because it shows that has successfully extended Kubernetes to make Scylla clusters a first class citizen in the Kubernetes cloud-native environment.

+
kubectl -n scylla get ScyllaCluster
+
+
+

Checking the pods that are created is as easy as:

+
kubectl -n scylla get pods
+
+
+

The output should be something like:

+
NAME                                    READY   STATUS    RESTARTS   AGE
+simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          9m49s
+simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          7m43s
+simple-cluster-us-east-1-us-east-1a-2   2/2     Running   0          6m46s
+
+
+

It is important to note that the operator creates these instances according to a pattern. +This pattern is as follows: CLUSTER_NAME-DATACENTER_NAME-RACK_NAME-INSTANCE_NUMBER as specified in cluster.yaml.

+

In the above example we have the following properties:

+
    +
  • CLUSTER_NAME: simple-cluster

  • +
  • DATACENTER_NAME: us-east-1

  • +
  • RACK_NAME: us-east-1a

  • +
  • INSTANCE_NUMBER: An automatically generated number attached to the pod name.

  • +
+

We picked the names to resemble something you can find in a cloud service but this is inconsequential, they can be set to anything you want.

+

To check if all the desired members are running, you should see the same number of entries from the following command as the number of members that was specified in cluster.yaml:

+
kubectl -n scylla get pod -l app=scylla
+
+
+

You can also track the state of a Scylla cluster from its status. To check the current status of a Cluster, run:

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+

Checking the logs of the running scylla instances can be done like this:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0 scylla
+
+
+
+

Configure host networking

+

To squeeze the most out of your deployment it is sometimes necessary to employ host networking. +To enable this the CRD allows for specifying a network parameter as such:

+
version: 4.0.0
+  agentVersion: 2.0.2
+  cpuset: true
+  network:
+    hostNetworking: true
+
+
+

This will result in hosts network to be used for the Scylla Stateful Set deployment.

+
+
+

Configure container kernel parameters

+

Sometimes it is necessary to run the container with different kernel parameters. +In order to support this, the Scylla Operator defines a cluster property sysctls that is a list of the desired key-value pairs to set.

+

For example: To increase the number events available for asynchronous IO processing in the Linux kernel to N set sysctls tofs.aio-max-nr=N.

+
spec:
+  sysctls:
+  - "fs.aio-max-nr=2097152"
+
+
+
+
+

Deploying Alternator

+

The operator is also capable of deploying Alternator instead of the regular Scylla. +This requires a small change in the cluster definition. +Change the cluster.yaml file from this:

+
spec:
+  version: 4.0.0
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

to this:

+
spec:
+  version: 4.0.0
+  alternator:
+    port: 8000
+    writeIsolation: only_rmw_uses_lwt
+  agentVersion: 2.0.2
+  developerMode: true
+  datacenter:
+    name: us-east-1
+
+
+

You can specify whichever port you want.

+

You must provide desired write isolation, supported values are: “always”, “forbid_rmw”, “only_rmw_uses_lwt”. +Difference between those isolation levels can be found in Scylla Alternator documentation.

+

Once this is done the regular CQL ports will no longer be available, the cluster is a pure Alienator cluster.

+
+
+
+

Accessing the Database

+
    +
  • From kubectl:

  • +
+

To get a cqlsh shell in your new Cluster:

+
kubectl exec -n scylla -it simple-cluster-us-east-1-us-east-1a-0 -- cqlsh
+> DESCRIBE KEYSPACES;
+
+
+
    +
  • From inside a Pod:

  • +
+

When you create a new Cluster, automatically creates a Service for the clients to use in order to access the Cluster. +The service’s name follows the convention <cluster-name>-client. +You can see this Service in your cluster by running:

+
kubectl -n scylla describe service simple-cluster-client
+
+
+

Pods running inside the Kubernetes cluster can use this Service to connect to Scylla. +Here’s an example using the Python Driver:

+
from cassandra.cluster import Cluster
+
+cluster = Cluster(['simple-cluster-client.scylla.svc'])
+session = cluster.connect()
+
+
+

If you are running the Alternator you can access the API on the port you specified using plain http.

+
+
+

Configure Scylla

+

The operator can take a ConfigMap and apply it to the scylla.yaml configuration file. +This is done by adding a ConfigMap to Kubernetes and refering to this in the Rack specification. +The ConfigMap is just a file called scylla.yaml that has the properties you want to change in it. +The operator will take the default properties for the rest of the configuration.

+
    +
  • Create a ConfigMap the default name that the operator uses is scylla-config:

  • +
+
kubectl create configmap scylla-config -n scylla --from-file=/path/to/scylla.yaml
+
+
+
    +
  • Wait for the mount to propagate and then restart the cluster:

  • +
+
kubectl rollout restart -n scylla statefulset/simple-cluster-us-east-1-us-east-1a
+
+
+
    +
  • The new config should be applied automatically by the operator, check the logs to be sure.

  • +
+

Configuring cassandra-rackdc.properties is done by adding the file to the same mount as scylla.yaml.

+
kubectl create configmap scylla-config -n scylla --from-file=/tmp/scylla.yaml --from-file=/tmp/cassandra-rackdc.properties -o yaml --dry-run | kubectl replace -f -
+
+
+

The operator will then apply the overridable properties prefer_local and dc_suffix if they are available in the provided mounted file.

+
+
+

Configure Scylla Manager Agent

+

The operator creates a second container for each scylla instance that runs Scylla Manager Agent. +This container serves as a sidecar and it’s the main endpoint for interacting with Scylla API. +The Scylla Manager Agent can be configured with various things such as the security token used to allow access to Scylla API and storage providers for backups.

+

To configure the agent you just create a new secret called scylla-agent-config-secret and populate it with the contents in the scylla-manager-agent.yaml file like this:

+
kubectl create secret -n scylla generic scylla-agent-config-secret --from-file scylla-manager-agent.yaml
+
+
+

See Scylla Manager Agent configuration for a complete reference of the Scylla Manager agent config file.

+
+

Scylla Manager Agent auth token

+

Operator provisions Agent auth token by copying value from user provided config secret or auto generates it if it’s empty. +To check which value is being used, decode content of <cluster-name>-auth-token secret. +To change it simply remove the secret. Operator will create a new one. To pick up the change in the cluster, initiate a rolling restart.

+
+
+
+

Set up monitoring

+

To set up monitoring using Prometheus and Grafana follow this guide.

+
+
+

Scale Up

+

The operator supports scale up of a rack as well as addition of new racks. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale up a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • To add a new rack, append the racks list with a new rack. Remember to choose a different rack name for the new rack.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Benchmark with cassandra-stress

+

After deploying our cluster along with the monitoring, we can benchmark it using cassandra-stress and see its performance in Grafana. We have a mini cli that generates Kubernetes Jobs that run cassandra-stress against a cluster.

+
+

Because cassandra-stress doesn’t scale well to multiple cores, we use multiple jobs with a small core count for each

+
+
# Run a benchmark with 10 jobs, with 6 cpus and 50.000.000 operations each.
+# Each Job will throttle throughput to 30.000 ops/sec for a total of 300.000 ops/sec.
+hack/cass-stress-gen.py --num-jobs=10 --cpu=6 --memory=20G --ops=50000000 --limit=30000
+kubectl apply -f scripts/cassandra-stress.yaml
+
+
+

Make sure you set the proper arguments in case you have altered things such as name or namespace.

+
./hack/cass-stress-gen.py -h
+usage: cass-stress-gen.py [-h] [--num-jobs NUM_JOBS] [--name NAME] [--namespace NAMESPACE] [--scylla-version SCYLLA_VERSION] [--host HOST] [--cpu CPU] [--memory MEMORY] [--ops OPS] [--threads THREADS] [--limit LIMIT]
+                          [--connections-per-host CONNECTIONS_PER_HOST] [--print-to-stdout] [--nodeselector NODESELECTOR]
+
+Generate cassandra-stress job templates for Kubernetes.
+
+optional arguments:
+  -h, --help            show this help message and exit
+  --num-jobs NUM_JOBS   number of Kubernetes jobs to generate - defaults to 1
+  --name NAME           name of the generated yaml file - defaults to cassandra-stress
+  --namespace NAMESPACE
+                        namespace of the cassandra-stress jobs - defaults to "default"
+  --scylla-version SCYLLA_VERSION
+                        version of scylla server to use for cassandra-stress - defaults to 4.0.0
+  --host HOST           ip or dns name of host to connect to - defaults to scylla-cluster-client.scylla.svc
+  --cpu CPU             number of cpus that will be used for each job - defaults to 1
+  --memory MEMORY       memory that will be used for each job in GB, ie 2G - defaults to 2G * cpu
+  --ops OPS             number of operations for each job - defaults to 10000000
+  --threads THREADS     number of threads used for each job - defaults to 50 * cpu
+  --limit LIMIT         rate limit for each job - defaults to no rate-limiting
+  --connections-per-host CONNECTIONS_PER_HOST
+                        number of connections per host - defaults to number of cpus
+  --print-to-stdout     print to stdout instead of writing to a file
+  --nodeselector NODESELECTOR
+                        nodeselector limits cassandra-stress pods to certain nodes. Use as a label selector, eg. --nodeselector role=scylla
+
+
+

While the benchmark is running, open up Grafana and take a look at the monitoring metrics.

+

After the Jobs finish, clean them up with:

+
kubectl delete -f scripts/cassandra-stress.yaml
+
+
+
+
+

Scale Down

+

The operator supports scale down of a rack. To make the changes, you can use:

+
kubectl -n scylla edit ScyllaCluster simple-cluster
+
+
+
    +
  • To scale down a rack, change the Spec.Members field of the rack to the desired value.

  • +
  • After editing and saving the yaml, check your cluster’s Status and Events for information on what’s happening:

  • +
+
kubectl -n scylla describe ScyllaCluster simple-cluster
+
+
+
+
+

Clean Up

+

To clean up all resources associated with this walk-through, you can run the commands below.

+

NOTE: this will destroy your database and delete all of its associated data.

+
kubectl delete -f examples/generic/cluster.yaml
+kubectl delete -f examples/common/operator.yaml
+kubectl delete -f examples/common/cert-manager.yaml
+
+
+
+
+

Troubleshooting

+

If the cluster does not come up, the first step would be to examine the operator’s logs:

+
kubectl -n scylla-operator logs deployment.apps/scylla-operator
+
+
+

If everything looks OK in the operator logs, you can also look in the logs for one of the Scylla instances:

+
kubectl -n scylla logs simple-cluster-us-east-1-us-east-1a-0
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/genindex.html b/v1.9/genindex.html new file mode 100644 index 00000000000..ed6a12a2309 --- /dev/null +++ b/v1.9/genindex.html @@ -0,0 +1,560 @@ + + + + + + + + + + + + + Index | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ + + +
+ + + + + +
+ + +
+ +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/gke.html b/v1.9/gke.html new file mode 100644 index 00000000000..dba4d4e308a --- /dev/null +++ b/v1.9/gke.html @@ -0,0 +1,773 @@ + + + + + + + + + + + + + Deploying Scylla on GKE | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla on GKE

+

This guide is focused on deploying Scylla on GKE with maximum performance (without any persistence guarantees). +It sets up the kubelets on GKE nodes to run with static cpu policy and uses local sdd disks in RAID0 for maximum performance.

+

Most of the commands used to setup the Scylla cluster are the same for all environments +As such we have tried to keep them separate in the general guide.

+
+

TL;DR;

+

If you don’t want to run the commands step-by-step, you can just run a script that will set everything up for you:

+
# Edit according to your preference
+GCP_USER=$(gcloud config list account --format "value(core.account)")
+GCP_PROJECT=$(gcloud config list project --format "value(core.project)")
+GCP_ZONE=us-west1-b
+
+# From inside the examples/gke folder
+cd examples/gke
+./gke.sh -u "$GCP_USER" -p "$GCP_PROJECT" -z "$GCP_ZONE"
+
+# Example:
+# ./gke.sh -u yanniszark@arrikto.com -p gke-demo-226716 -z us-west1-b
+
+
+

:warning: Make sure to pass a ZONE (ex.: us-west1-b) and not a REGION (ex.: us-west1) or it will deploy nodes in each ZONE available in the region.

+

After you deploy, see how you can benchmark your cluster with cassandra-stress.

+
+
+

Walkthrough

+
+

Google Kubernetes Engine Setup

+
+

Configure environment variables

+

First of all, we export all the configuration options as environment variables. +Edit according to your own environment.

+
GCP_USER=$( gcloud config list account --format "value(core.account)" )
+GCP_PROJECT=$( gcloud config list project --format "value(core.project)" )
+GCP_REGION=us-west1
+GCP_ZONE=us-west1-b
+CLUSTER_NAME=scylla-demo
+CLUSTER_VERSION=$( gcloud container get-server-config --zone ${GCP_ZONE} --format "value(validMasterVersions[0])" )
+
+
+
+
+

Creating a GKE cluster

+

First we need to change kubelet CPU Manager policy to static by providing a config file. Create file called systemconfig.yaml with the following content:

+
kubeletConfig:
+  cpuManagerPolicy: static
+
+
+

Then we’ll create a GKE cluster with the following:

+
    +
  1. A NodePool of 2 n1-standard-8 Nodes, where the operator and the monitoring stack will be deployed. These are generic Nodes and their free capacity can be used for other purposes.

    +
    gcloud container \
    +clusters create "${CLUSTER_NAME}" \
    +--cluster-version "${CLUSTER_VERSION}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-8" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--image-type "UBUNTU_CONTAINERD" \
    +--system-config-from-file=systemconfig.yaml \
    +--enable-stackdriver-kubernetes \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  2. +
  3. A NodePool of 2 n1-standard-32 Nodes to deploy cassandra-stress later on.

    +
    gcloud container --project "${GCP_PROJECT}" \
    +node-pools create "cassandra-stress-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--zone "${GCP_ZONE}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "2" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--node-taints role=cassandra-stress:NoSchedule \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  4. +
  5. A NodePool of 4 n1-standard-32 Nodes, where the Scylla Pods will be deployed. Each of these Nodes has 8 local SSDs attached, which are combined into a RAID0 array by using gcloud beta feature ephemeral-storage. It is important to disable autoupgrade and autorepair. Automatic cluster upgrade or node repair has a hard timeout after which it no longer respect PDBs and force deletes the Compute Engine instances, which also deletes all data on the local SSDs. At this point, it’s better to handle upgrades manually, with more control over the process and error handling.

    +
    gcloud beta container \
    +node-pools create "scylla-pool" \
    +--cluster "${CLUSTER_NAME}" \
    +--node-version "${CLUSTER_VERSION}" \
    +--machine-type "n1-standard-32" \
    +--num-nodes "4" \
    +--disk-type "pd-ssd" --disk-size "20" \
    +--ephemeral-storage local-ssd-count="8" \
    +--node-taints role=scylla-clusters:NoSchedule \
    +--node-labels scylla.scylladb.com/gke-ephemeral-storage-local-ssd=true \
    +--image-type "UBUNTU_CONTAINERD" \
    +--no-enable-autoupgrade \
    +--no-enable-autorepair
    +
    +
    +
  6. +
+
+
+

Setting Yourself as cluster-admin

+
+

(By default GKE doesn’t give you the necessary RBAC permissions)

+
+

Get the credentials for your new cluster

+
gcloud container clusters get-credentials "${CLUSTER_NAME}" --zone="${GCP_ZONE}"
+
+
+

Create a ClusterRoleBinding for your user. +In order for this to work you need to have at least permission container.clusterRoleBindings.create. +The easiest way to obtain this permission is to enable the Kubernetes Engine Admin role for your user in the GCP IAM web interface.

+
kubectl create clusterrolebinding cluster-admin-binding --clusterrole cluster-admin --user "${GCP_USER}"
+
+
+
+
+
+

Installing Required Tools

+
+

Installing Helm

+

If you don’t have Helm installed, Go to the helm docs to get the binary for your distro.

+
+
+

Install xfs-formatter DaemonSet

+

To run Scylla, it is necessary to convert ephemeral storage’s filesystem to xfs. Deploy the xfs-formatter DaemonSet to have it taken care of. +Unfortunately, GKE is only able to provision the ephemeral storage with ext4 filesystem while Scylla requires xfs filesystem. Deploying the xfs-format DaemonSet will format the storage as xfs and prevent GKE from reformatting it back to ext4.

+

Note that despite our best efforts, this solution is only a workaround. Its robustness depends on GKE’s disk formatting logic remaining unchanged, for which there is no guarantee.

+
kubectl apply -f examples/gke/xfs-formatter-daemonset.yaml
+
+
+
+
+

Install the local provisioner

+

Afterwards, deploy the local volume provisioner, which will discover the RAID0 arrays’ mount points and make them available as PersistentVolumes.

+
helm install local-provisioner examples/common/provisioner
+
+
+
+
+
+

Deploy Scylla cluster

+

In order for the example to work you need to modify the cluster definition in the following way:

+
sed -i "s/<gcp_region>/${GCP_REGION}/g;s/<gcp_zone>/${GCP_ZONE}/g" examples/gke/cluster.yaml
+
+
+

This will inject your region and zone into the cluster definition so that it matches the kubernetes cluster you just created.

+
+
+

Installing the Scylla Operator and Scylla

+

Now you can follow the generic guide to install the operator and launch your Scylla cluster in a highly performant environment.

+
+

Accessing the database

+

Instructions on how to access the database can also be found in the generic guide.

+
+
+
+

Deleting a GKE cluster

+

Once you are done with your experiments delete your cluster using the following command:

+
gcloud container --project "${GCP_PROJECT}" clusters delete --zone "${GCP_ZONE}" "${CLUSTER_NAME}"
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/helm.html b/v1.9/helm.html new file mode 100644 index 00000000000..3785a9b2223 --- /dev/null +++ b/v1.9/helm.html @@ -0,0 +1,925 @@ + + + + + + + + + + + + + Deploying Scylla stack using Helm Charts | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla stack using Helm Charts

+

In this example we will install Scylla stack on Kubernetes. This includes the following components:

+
    +
  • Scylla Operator

  • +
  • Scylla Manager

  • +
  • Scylla

  • +
+

We will use Minikube K8s cluster, but this could be any K8s cluster supported by the Scylla Operator.

+
+

Prerequisites

+
    +
  • Kubernetes 1.16+

  • +
  • Helm 3+

  • +
+
+
+

TL;DR

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+kubectl apply -f examples/common/cert-manager.yaml 
+helm install scylla-operator scylla/scylla-operator --create-namespace --namespace scylla-operator
+helm install scylla-manager scylla/scylla-manager --create-namespace --namespace scylla-manager
+helm install scylla scylla/scylla --create-namespace --namespace scylla
+
+
+
+
+

Deploy Cert Manager

+

This step is optional if you want to use your own certificate. +If you don’t have one, make sure to not disable autogeneration using Scylla Operator Helm Chart.

+

First deploy Cert Manager, you can either follow upsteam instructions or use following command:

+
kubectl apply -f examples/common/cert-manager.yaml
+
+
+

Once it’s deployed, wait until all Cert Manager pods will enter into Running state:

+
kubectl wait -n cert-manager --for=condition=ready pod -l app=cert-manager --timeout=60s
+
+
+
+
+

Helm Chart repository

+

To install Scylla Helm Chart repository execute the following commands:

+
helm repo add scylla https://scylla-operator-charts.storage.googleapis.com/stable
+helm repo update
+
+
+

Then you can search through repository, it should contain at least three Helm charts:

+
helm search repo scylla
+NAME                   CHART VERSION   APP VERSION     DESCRIPTION                                       
+scylla/scylla          1.0.1           v1.0.1          Scylla is a close-to-the-hardware rewrite of Ca...
+scylla/scylla-manager  1.0.1           v1.0.1          Scylla Manager automates database operations.     
+scylla/scylla-operator 1.0.1           v1.0.1          Scylla Operator is a Kubernetes Operator for ma...
+
+
+

All these charts should be installable without any need of customizing (defaults are provided). +Although Helm is used for this particular reason, so lets customize them a bit.

+
+
+

Scylla Operator Chart

+

This chart is very simple, most interesting customizable fields are image, resources and webhook. +All others can be looked up in Chart source in Scylla Operator repository.

+
+

image

+

Image allows to define which Scylla Operator image will be used. By default it downloads the image from main +Docker Hub repository, using version defined in Helm Chart. +You can also change pullPolicy if default one does not +fullfill your needs. In Kubernetes documentation you +can read more about different pull policies.

+

Image URL will be composed based on these fields in follwing pattern: +repository/scylla-operator:tag

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+
+
+

resources

+

You can customize how much resources will be allocated for Operator pods via resource field:

+
resources:
+  limits:
+    cpu: 100m
+    memory: 128Mi
+  requests:
+    cpu: 100m
+    memory: 32Mi
+
+
+

To read more about resource specification, follow Kubernetes documentation.

+
+
+

webhook

+

Webhook field allows to decide whether you want to use autogenerated self-signed certificate using Cert Manager or +whether you want to provide your own certificate.

+

createSelfSignedCertificate specifies whether a self-signed certificate should be created using Cert Manager +certificateSecretName: name of a secret containing custom certificate.

+
webhook:
+  createSelfSignedCertificate: true
+  certificateSecretName: ""
+
+
+
+
+

Customization

+

You can customize all these fields and others by providing file containing desired values. +Content of this file will overwrite default values.

+

You can find an example in Scylla Operator repository under examples/helm/values.operator.yaml

+
+
+

Installation

+

To deploy Scylla Operator using customized values file execute the following:

+
helm install scylla-operator scylla/scylla-operator --values examples/helm/values.operator.yaml --create-namespace --namespace scylla-operator
+
+
+
+
+
+

Scylla Helm Chart

+

Scylla Chart allows to customize and deploy Scylla cluster. +By default Scylla Helm charts deploys working Scylla cluster, but of course we can customize it.

+
+

Customization

+

Versions of images used in the cluster can be set via scyllaImage and agentImage

+
scyllaImage:
+  repository: scylladb/scylla
+  tag: 4.3.0
+
+agentImage:
+  repository: scylladb/scylla-manager-agent
+  tag: 2.2.1
+
+
+

A minimal Scylla cluster can be expressed as:

+
datacenter: us-east-1
+racks:
+- name: us-east-1b
+  members: 2
+  storage:
+    capacity: 5G
+  resources:
+    limits:
+      cpu: 1
+      memory: 1Gi
+    requests:
+      cpu: 1
+      memory: 1Gi
+
+
+

Above cluster will use 4.3.0 Scylla, 2.2.1 Scylla Manager Agent sidecar and will have a single rack having 2 nodes. +Each node will have a single CPU and 1 GiB of memory.

+

For other customizable fields, please refer to ScyllaCluster CRD definition. +CRD Rack Spec and Helm Chart Rack should have the same fields.

+
+
+

Installation

+

To deploy Scylla cluster using customzied values file execute the following command:

+
helm install scylla scylla/scylla --values examples/helm/values.cluster.yaml --create-namespace --namespace scylla
+
+
+

Scylla Operator will provision this cluster on your K8s environment.

+
+
+
+

Scylla Manager Helm Chart

+

Scylla Manager Chart allows to customize and deploy Scylla Manager in K8s environment. +Scylla Manager consist of two applications (Scylla Manager itself and Scylla Manager Controller) and additional Scylla cluster.

+

To read more about Scylla Manager see Manager guide.

+
+

Scylla Manager

+

To set version of used Scylla Manager you can use image field:

+
image:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: 2.2.1
+
+
+

To control how many resources are allocated for Scylla Manager use resource field:

+
resources:
+  limits:
+    cpu: 500m
+    memory: 500Mi
+  requests:
+    cpu: 500m
+    memory: 500Mi
+
+
+
+
+

Scylla Manager Controller

+

Similarly Scylla Manager Controller image can be customized:

+
controllerImage:
+  repository: scylladb
+  pullPolicy: IfNotPresent
+  tag: ""
+
+
+

And allocated resources:

+
controllerResources:
+  limits:
+    cpu: 100m
+    memory: 30Mi
+  requests:
+    cpu: 100m
+    memory: 20Mi
+
+
+
+
+

Scylla

+

To customize internal Scylla instance dedicated to Scylla Manager, see guide above customizing Scylla Helm Chart. +It’s definition should land as a scylla field.

+
+
+

Customization

+

All others customizable fields can be looked up in Chart source in Scylla Operator repository.

+
+
+

Installation

+

To deploy Scylla Manager using customized values file execute the following command:

+
helm install scylla-manager scylla/scylla-manager --values examples/helm/values.manager.yaml --create-namespace --namespace scylla-manager
+
+
+
+
+
+

Results

+

Scylla need some time to bootstrap all nodes, but after some time you should be ready to roll. It was simple isn’t it? +You can validate if everything was set up correctly by looking at the all resources created in used namespaces.

+

Scylla Operator:

+
$ kubectl -n scylla-operator get all
+
+NAME                                   READY   STATUS    RESTARTS   AGE
+pod/scylla-operator-5dbcb54f5c-vjm4m   1/1     Running   0          51s
+pod/scylla-operator-5dbcb54f5c-wfjbw   1/1     Running   0          51s
+
+NAME                              TYPE        CLUSTER-IP       EXTERNAL-IP   PORT(S)   AGE
+service/scylla-operator-webhook   ClusterIP   10.105.207.130   <none>        443/TCP   51s
+
+NAME                              READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-operator   2/2     2            2           51s
+
+NAME                                         DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-operator-5dbcb54f5c   2         2         2       51s
+
+
+

Operator is running!

+

Scylla Manager:

+
$ kubectl -n scylla-manager get all 
+
+NAME                                             READY   STATUS    RESTARTS   AGE
+pod/scylla-manager-669db64dd-bcm4v               1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-drbth   1/1     Running   0          89s
+pod/scylla-manager-controller-844ccc56c4-rhwqx   1/1     Running   0          89s
+
+NAME                            TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)             AGE
+service/scylla-manager          ClusterIP   10.105.231.53   <none>        80/TCP,5090/TCP     89s
+service/scylla-manager-client   ClusterIP   None            <none>        9180/TCP,5090/TCP   89s
+
+NAME                                        READY   UP-TO-DATE   AVAILABLE   AGE
+deployment.apps/scylla-manager              1/1     1            1           89s
+deployment.apps/scylla-manager-controller   2/2     2            2           89s
+
+NAME                                                   DESIRED   CURRENT   READY   AGE
+replicaset.apps/scylla-manager-669db64dd               1         1         1       89s
+replicaset.apps/scylla-manager-controller-844ccc56c4   2         2         2       89s
+
+
+

Good to go, ready to serve!

+

Scylla itself:

+
$ kubectl -n scylla get all        
+
+NAME                                READY   STATUS    RESTARTS   AGE
+pod/scylla-us-east-1-us-east-1b-0   2/2     Running   0          5m58s
+pod/scylla-us-east-1-us-east-1b-1   2/2     Running   0          4m29s
+
+NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
+service/scylla-client                   ClusterIP   None           <none>        9180/TCP,5090/TCP                                                 5m59s
+service/scylla-us-east-1-us-east-1b-0   ClusterIP   10.43.149.92   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   5m58s
+service/scylla-us-east-1-us-east-1b-1   ClusterIP   10.43.49.0     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   4m29s
+
+NAME                                           READY   AGE
+statefulset.apps/scylla-us-east-1-us-east-1b   2/2     5m59s
+
+
+

Two running nodes, exactly what we were asking for.

+
+
+

Monitoring

+

To spin up a Prometheus monitoring refer to monitoring guide.

+

Helm charts can create ServiceMonitors needed to observe Scylla Managger and Scylla. +Both of these Helm Charts allows to specify whether you want to create a ServiceMonitor:

+
serviceMonitor:
+  create: false
+
+
+

Change create to true and update your current deployment using:

+
helm upgrade --install scylla --namespace scylla scylla/scylla -f examples/helm/values.cluster.yaml
+
+
+

Helm should notice the difference, install the ServiceMonitor, and then Prometheous will be able to scrape metrics.

+
+
+

Cleanup

+

To remove these applications you can simply uninstall them using Helm CLI:

+
helm uninstall scylla -n scylla
+helm uninstall scylla-manager -n scylla-manager
+helm uninstall scylla-operator -n scylla-operator
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/index.html b/v1.9/index.html new file mode 100644 index 00000000000..137e37a44d7 --- /dev/null +++ b/v1.9/index.html @@ -0,0 +1,604 @@ + + + + + + + + + + + + + Scylla Operator Documentation | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Operator Documentation

+
+
+

Scylla Operator is an open source project which helps users of Scylla Open Source and Scylla Enterprise run Scylla on Kubernetes (K8s) +The Scylla operator manages Scylla clusters deployed to Kubernetes and automates tasks related to operating a Scylla cluster, like installation, out and downscale, rolling upgrades.

+_images/logo.png +

For the latest status of the project, and reports issue, see the Github Project. Also check out the K8s Operator lesson on Scylla University.

+

scylla-operator is a Kubernetes Operator for managing Scylla clusters.

+

Currently it supports:

+
    +
  • Deploying multi-zone clusters

  • +
  • Scaling up or adding new racks

  • +
  • Scaling down

  • +
  • Monitoring with Prometheus and Grafana

  • +
  • Integration with Scylla Manager

  • +
  • Dead node replacement

  • +
  • Version Upgrade

  • +
  • Backup

  • +
  • Repairs

  • +
  • Autohealing

  • +
  • Monitoring with Prometheus and Grafana

  • +
+

Choose a topic to begin:

+ +
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/known_issues.html b/v1.9/known_issues.html new file mode 100644 index 00000000000..a491b29e517 --- /dev/null +++ b/v1.9/known_issues.html @@ -0,0 +1,601 @@ + + + + + + + + + + + + + Known issues | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Known issues

+
+

Scylla Manager does not boot up on Minikube

+

If your Scylla Manager is failing to apply 8th migration (008_*), then apply fix for TRUNCATE queries.

+
+
+

TRUNCATE queries does not work on Minikube

+

The TRUNCATE queries requires hairpinning to be enabled. On minikube this is disabled by default.

+

To fix it execute the following command:

+
minikube ssh sudo ip link set docker0 promisc on
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/manager.html b/v1.9/manager.html new file mode 100644 index 00000000000..222b15b326e --- /dev/null +++ b/v1.9/manager.html @@ -0,0 +1,812 @@ + + + + + + + + + + + + + Deploying Scylla Manager on a Kubernetes Cluster | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Deploying Scylla Manager on a Kubernetes Cluster

+

Scylla Manager is a product for database operations automation, +it can schedule tasks such as repairs and backups. +Scylla Manager can manage multiple Scylla clusters and run cluster-wide tasks +in a controlled and predictable way.

+

Scylla Manager is available for Scylla Enterprise customers and Scylla Open Source users. +With Scylla Open Source, Scylla Manager is limited to 5 nodes. +See the Scylla Manager Proprietary Software License Agreement for details.

+
+

Prerequisites

+ +
+
+

Architecture

+

Scylla Manager in K8s consist of:

+
    +
  • Dedicated Scylla Cluster

    +

    Scylla Manager persists its state to a Scylla cluster. +Additional small single node cluster is spawned in the Manager namespace.

    +
  • +
  • Scylla Manager Controller

    +

    Main mission of Controller is to watch changes of Scylla Clusters, and synchronize three states.

    +
      +
    1. What user wants - task definition in CRD.

    2. +
    3. What Controller registered - Task name to Task ID mapping - CRD status.

    4. +
    5. Scylla Manager task listing - internal state of Scylla Manager.

    6. +
    +

    When Scylla Cluster CRD is being deployed Controller will register it in Scylla Manager once cluster reaches desired node count. +Once Cluster is fully up and running it will schedule all tasks defined in Cluster CRD. +Controller also supports task updates and unscheduling.

    +
  • +
  • Scylla Manager

    +

    Regular Scylla Manager, the same used in cloud and bare metal deployments.

    +
  • +
+
+
+

Deploy Scylla Manager

+

Deploy the Scylla Manager using the following commands:

+
kubectl apply -f examples/common/manager.yaml
+
+
+

This will install the Scylla Manager in the scylla-manager namespace. +You can check if the Scylla Manager is up and running with:

+
kubectl -n scylla-manager get pods
+NAME                                               READY   STATUS    RESTARTS   AGE
+scylla-manager-cluster-manager-dc-manager-rack-0   2/2     Running   0          37m
+scylla-manager-controller-0                        1/1     Running   0          28m
+scylla-manager-scylla-manager-7bd9f968b9-w25jw     1/1     Running   0          37m
+
+
+

As you can see there are three pods:

+
    +
  • scylla-manager-cluster-manager-dc-manager-rack-0 - is a single node Scylla cluster.

  • +
  • scylla-manager-controller-0 - Scylla Manager Controller.

  • +
  • scylla-manager-scylla-manager-7bd9f968b9-w25jw - Scylla Manager.

  • +
+

To see if Scylla Manager is fully up and running we can check their logs. +To do this, execute following command:

+
kubectl -n scylla-manager logs scylla-manager-controller-0
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:25:27.882Z","M":"Scylla Manager Controller started","version":"","build_date":"","commit":"","built_by":"","go_version":"","options":{"Name":"scylla-manager-controller-0","Namespace":"scylla-manager","LogLevel":"debug","ApiAddress":"http://127.0.0.1:5080/api/v1"},"_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+{"L":"INFO","T":"2020-09-23T11:25:28.435Z","M":"Registering Components.","_trace_id":"LQEJV3kDR5Gx9M3XQ2YnnQ"}
+
+
+

To check logs of Scylla Manager itself, use following command:

+
kubectl -n scylla-manager logs scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

The output should be something like:

+
{"L":"INFO","T":"2020-09-23T11:26:53.238Z","M":"Scylla Manager Server","version":"2.1.2-0.20200816.76cc4dcc","pid":1,"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Using config","config":{"HTTP":"127.0.0.1:5080","HTTPS":"","TLSCertFile":"/var/lib/scylla-manager/scylla_manager.crt","TLSKeyFile":"/var/lib/scylla-manager/scylla_manager.key","TLSCAFile":"","Prometheus":":56090","PrometheusScrapeInterval":5000000000,"debug":"127.0.0.1:56112","Logger":{"Mode":"stderr","Level":"info","Development":false},"Database":{"Hosts":["scylla-manager-cluster-manager-dc-manager-rack-0.scylla-manager.svc"],"SSL":false,"User":"","Password":"","LocalDC":"","Keyspace":"scylla_manager","MigrateDir":"/etc/scylla-manager/cql","MigrateTimeout":30000000000,"MigrateMaxWaitSchemaAgreement":300000000000,"ReplicationFactor":1,"Timeout":600000000,"TokenAware":true},"SSL":{"CertFile":"","Validate":true,"UserCertFile":"","UserKeyFile":""},"Healthcheck":{"Timeout":250000000,"SSLTimeout":750000000},"Backup":{"DiskSpaceFreeMinPercent":10,"AgeMax":43200000000000},"Repair":{"SegmentsPerRepair":1,"ShardParallelMax":0,"ShardFailedSegmentsMax":100,"PollInterval":200000000,"ErrorBackoff":300000000000,"AgeMax":0,"ShardingIgnoreMsbBits":12}},"config_files":["/mnt/etc/scylla-manager/scylla-manager.yaml"],"_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+{"L":"INFO","T":"2020-09-23T11:26:54.519Z","M":"Checking database connectivity...","_trace_id":"xQhkJ0OuR8e6iMDEpM62Hg"}
+
+
+

If there are no errors in the logs, let’s spin a Scylla Cluster.

+
+
+

Cluster registration

+

When the Scylla Manager is fully up and running, lets create a regular instance of Scylla cluster.

+

See generic tutorial to spawn your cluster.

+

Note: If you already have some Scylla Clusters, after installing Manager they should be +automatically registered in Scylla Manager.

+

Once cluster reaches desired node count, cluster status will be updated with ID under which it was registered in Manager.

+
kubectl -n scylla describe Cluster
+
+[...]
+Status:
+ Manager Id:  d1d532cd-49f2-4c97-9263-25126532803b
+ Racks:
+   us-east-1a:
+     Members:        3
+     Ready Members:  3
+     Version:        4.0.0
+
+
+

You can use this ID to talk to Scylla Manager using sctool CLI installed in Scylla Manager Pod. +You can also use Cluster name in namespace/cluster-name format.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

Scylla Manager by default registers recurring healhcheck tasks for Agent and for each of the enabled frontends (CQL, Alternator).

+

In this task listing we can see CQL and REST healthchecks.

+
+
+

Task scheduling

+

You can either define tasks prior Cluster creation, or for existing Cluster. +Let’s edit already running cluster definition to add repair and backup task.

+
kubectl -n scylla edit Cluster simple-cluster
+
+
+

Add following task definition to Cluster spec:

+
  repairs:
+    - name: "users repair"
+      keyspace: ["users"]
+      interval: "1d"
+  backup:
+    - name: "weekly backup"
+      location: ["s3:cluster-backups"]
+      retention: 3
+      interval: "7d"
+    - name: "daily backup"
+      location: ["s3:cluster-backups"]
+      retention: 7
+      interval: "1d"
+
+
+

For full task definition configuration consult Scylla Cluster CRD.

+

Note: Scylla Manager Agent must have access to above bucket prior the update in order to schedule backup task. +Consult Scylla Manager documentation for details on how to set it up.

+

Scylla Manager Controller will spot this change and will schedule tasks in Scylla Manager.

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task list
+
+Cluster: scylla/simple-cluster (d1d532cd-49f2-4c97-9263-25126532803b)
+╭─────────────────────────────────────────────────────────────┬──────────────────────────────────────┬────────────────────────────────┬────────╮
+│ Task                                                        │ Arguments                            │ Next run                       │ Status │
+├─────────────────────────────────────────────────────────────┼──────────────────────────────────────┼────────────────────────────────┼────────┤
+│ healthcheck/400b2723-eec5-422a-b7f3-236a0e10575b            │                                      │ 23 Sep 20 14:28:42 CEST (+15s) │ DONE   │
+│ backup/275aae7f-c436-4fc8-bcec-479e65fb8372                 │ -L s3:cluster-backups  --retention 3 │ 23 Sep 20 14:28:58 CEST (+7d)  │ NEW    │
+│ healthcheck_rest/28169610-a969-4c20-9d11-ab7568b8a1bd       │                                      │ 23 Sep 20 14:29:57 CEST (+1m)  │ NEW    │
+│ repair/d4946360-c29d-4bb4-8b9d-619ada495c2a                 │                                      │ 23 Sep 20 14:38:42 CEST        │ NEW    │
+╰─────────────────────────────────────────────────────────────┴──────────────────────────────────────┴────────────────────────────────┴────────╯
+
+
+

As you can see, we have two new tasks, weekly recurring backup, and one repair which should start shortly.

+

To check progress of run you can use following command:

+
kubectl -n scylla-manager exec -ti scylla-manager-scylla-manager-7bd9f968b9-w25jw -- sctool task progress --cluster d1d532cd-49f2-4c97-9263-25126532803b repair/d4946360-c29d-4bb4-8b9d-619ada495c2a
+Status:         RUNNING
+Start time:     23 Sep 20 14:38:42 UTC
+Duration:       13s
+Progress:       2.69%
+Datacenters:
+  - us-east-1
++--------------------+-------+
+| system_auth        | 8.06% |
+| system_distributed | 0.00% |
+| system_traces      | 0.00% |
++--------------------+-------+
+
+
+

Other tasks can be also tracked using the same command, but using different task ID. +Task IDs are present in Cluster Status as well as in task listing.

+
+
+

Clean Up

+

To clean up all resources associated with Scylla Manager, you can run the commands below.

+

NOTE: this will destroy your Scylla Manager database and delete all of its associated data.

+
kubectl delete -f examples/common/manager.yaml
+
+
+
+
+

Troubleshooting

+

Manager is not running

+

If the Scylla Manager does not come up, the first step would be to examine the Manager and Controller logs:

+
kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-controller
+kubectl -n scylla-manager logs -f scylla-manager-controller-0 scylla-manager-scylla-manager-7bd9f968b9-w25jw
+
+
+

My task wasn’t scheduled

+

If your task wasn’t scheduled, Cluster status will be updated with error messages for each failed task. +You can also consult Scylla Manager logs.

+

Example:

+

Following status describes error when backup task cannot be scheduled, due to lack of access to bucket:

+
Status:
+  Backups:
+    Error:     create backup target: location is not accessible: 10.100.16.62: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.100.16.62 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.107.193.33: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.107.193.33 and run "scylla-manager-agent check-location -L s3:manager-test --debug"; 10.109.197.60: giving up after 2 attempts: after 15s: timeout - make sure the location is correct and credentials are set, to debug SSH to 10.109.197.60 and run "scylla-manager-agent check-location -L s3:manager-test --debug"
+    Id:        00000000-0000-0000-0000-000000000000
+    Interval:  0
+    Location:
+      s3:manager-test
+    Name:         adhoc backup
+    Num Retries:  3
+    Retention:    3
+    Start Date:   now
+  Manager Id:     2b9dbe8c-9daa-4703-a66d-c29f63a917c8
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.0.0
+
+
+

Because Controller is infinitely retrying to schedule each defined task, once permission issues will be resolved, +task should appear in task listing and Cluster status.

+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/migration.html b/v1.9/migration.html new file mode 100644 index 00000000000..2a3632edcfd --- /dev/null +++ b/v1.9/migration.html @@ -0,0 +1,747 @@ + + + + + + + + + + + + + Version migrations | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Version migrations

+
+

v0.3.0 -> v1.0.0 migration

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common kind +which is easier to disambiguate (ScyllaCluster). +This change is backward incompatible, which means manual migration is needed.

+

This procedure involves having two CRDs registered at the same time. We will detach Scylla Pods +from Scylla Operator for a short period to ensure that nothing is garbage collected when Scylla Operator is upgraded. +Compared to the upgrade guide where full deletion is requested, this procedure shouldn’t cause downtimes. +Although detaching resources from their controller is considered hacky. This means that you shouldn’t run procedure +out of the box on production. Make sure this procedure works well multiple times on your staging environment first.

+

Read the whole procedure and make sure you understand what is going on before executing any of the commands!

+

In case of any issues or questions regarding this procedure, you’re welcomed on our Scylla Users Slack +on #kubernetes channel.

+
+
+

Procedure

+
    +
  1. Execute this whole procedure for each cluster sequentially. To get a list of existing clusters execute the following

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +

    All below commands will use scylla namespace and simple-cluster as a cluster name.

    +
  2. +
  3. Make sure you’re using v1.0.0 tag:

    +
    git checkout v1.0.0
    +
    +
    +
  4. +
  5. Upgrade your cert-manager to v1.0.0. If you installed it from a static file from this repo, simply execute the following:

    +
     kubectl apply -f examples/common/cert-manager.yaml
    +
    +
    +

    If your cert-manager was installed in another way, follow official instructions on cert-manager website.

    +
  6. +
  7. examples/common/operator.yaml file contains multiple resources. Extract only CustomResourceDefinition to separate file.

  8. +
  9. Install v1.0.0 CRD definition from file created in the previous step:

    +
    kubectl apply -f examples/common/crd.yaml
    +
    +
    +
  10. +
  11. Save your existing simple-cluster Cluster definition to a file:

    +
    kubectl -n scylla get cluster.scylla.scylladb.com simple-cluster -o yaml > existing-cluster.yaml
    +
    +
    +
  12. +
  13. Migrate Kind and ApiVersion to new values using:

    +
    sed -i 's/scylla.scylladb.com\/v1alpha1/scylla.scylladb.com\/v1/g' existing-cluster.yaml
    +sed -i 's/kind: Cluster/kind: ScyllaCluster/g' existing-cluster.yaml
    +
    +
    +
  14. +
  15. Install migrated CRD instance

    +
    kubectl apply -f existing-cluster.yaml
    +
    +
    +

    At this point, we should have two CRDs describing your Scylla cluster, although the new one is not controlled by the Operator.

    +
  16. +
  17. Get UUID of newly created ScyllaCluster resource:

    +
    kubectl -n scylla get ScyllaCluster simple-cluster --template="{{ .metadata.uid }}"
    +
    +12a3678d-8511-4c9c-8a48-fa78d3992694
    +
    +
    +

    Save output UUID somewhere, it will be referred as <new-cluster-uid> in commands below.

    +

    Depending on your shell, you might get additional ‘%’ sign at the end of UUID, make sure to remove it!

    +
  18. +
  19. Upgrade ClusterRole attached to each of the Scylla nodes to grant them permission to lookup Scylla clusters:

    +
    kubectl patch ClusterRole simple-cluster-member --type "json" -p '[{"op":"add","path":"/rules/-","value":{"apiGroups":["scylla.scylladb.com"],"resources":["scyllaclusters"],"verbs":["get"]}}]'
    +
    +
    +

    Amend role name according to your cluster name, it should look like <scylla-cluster-name>-member.

    +
  20. +
  21. Get a list of all Services associated with your cluster. First get list of all services:

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          109m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   108m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   106m
    +
    +
    +
  22. +
  23. For each service, change its ownerReference to point to new CRD instance:

    +
     kubectl -n scylla patch svc <cluster-svc-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-svc-name> with Service name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  24. +
  25. Get a list of all Services again to see if none was deleted. Check also “Age” column, it shouldn’t be lower than previous result.

    +
     kubectl -n scylla get svc -l "scylla/cluster=simple-cluster"
    +
    + NAME                                    TYPE        CLUSTER-IP     EXTERNAL-IP   PORT(S)                                                           AGE
    + simple-cluster-client                   ClusterIP   None           <none>        9180/TCP                                                          110m
    + simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.23.96    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   110m
    + simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.66.22    <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   109m
    + simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.246.25   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   107m
    +
    +
    +
  26. +
  27. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  28. +
  29. For each StatefulSet from previous step, change its ownerReference to point to new CRD instance.

    +
     kubectl -n scylla patch sts <cluster-sts-name> --type='json' -p='[{"op": "replace", "path": "/metadata/ownerReferences/0/apiVersion", "value":"scylla.scylladb.com/v1"}, {"op": "replace", "path": "/metadata/ownerReferences/0/kind", "value":"ScyllaCluster"}, {"op": "replace", "path": "/metadata/ownerReferences/0/uid", "value":"<new-cluster-uid>"}]'
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name, and <new-cluster-uid> with saved UUID from one of the previous steps.

    +
  30. +
  31. Now when all k8s resources bound to Scylla are attached to new CRD, we can remove 0.3.0 Operator and old CRD definition. +Checkout v0.3.0 version, and remove Scylla Operator, and old CRD:

    +
     git checkout v0.3.0
    + kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  32. +
  33. Checkout v1.0.0, and install upgraded Scylla Operator:

    +
     git checkout v1.0.0
    + kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  34. +
  35. Wait until Scylla Operator boots up:

    +
     kubectl -n scylla-operator-system wait --for=condition=ready pod --all --timeout=600s
    +
    +
    +
  36. +
  37. Get a list of StatefulSets associated with your cluster:

    +
    kubectl -n scylla get sts -l "scylla/cluster=simple-cluster"
    +
    +NAME                                  READY   AGE
    +simple-cluster-us-east-1-us-east-1a   3/3     104m
    +
    +
    +
  38. +
  39. For each StatefulSet from previous step, change its sidecar container image to v1.0.0, and wait until change will be propagated. This step will initiate a rolling restart of pods one by one.

    +
    kubectl -n scylla patch sts <cluster-sts> --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/initContainers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +kubectl -n scylla rollout status sts <cluster-sts>
    +
    +
    +

    Replace <cluster-sts-name> with StatefulSet name.

    +
  40. +
  41. If you’re using Scylla Manager, bump Scylla Manager Controller image to v1.0.0

    +
     kubectl -n scylla-manager-system patch sts scylla-manager-controller --type='json' -p='[{"op": "replace", "path": "/spec/template/spec/containers/0/image", "value":"scylladb/scylla-operator:v1.0.0"}]'
    +
    +
    +
  42. +
  43. Your Scylla cluster is now migrated to v1.0.0.

  44. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/monitoring.html b/v1.9/monitoring.html new file mode 100644 index 00000000000..3542a67c04d --- /dev/null +++ b/v1.9/monitoring.html @@ -0,0 +1,794 @@ + + + + + + + + + + + + + Monitoring | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Monitoring

+

Scylla Operator 1.8 introduced a new API resource ScyllaDBMonitoring, allowing users to deploy a managed monitoring +setup for their Scylla Clusters.

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: ScyllaDBMonitoring
+metadata:
+  name: example
+spec:
+  type: Platform
+  endpointsSelector:
+    matchLabels:
+      app.kubernetes.io/name: scylla
+      scylla-operator.scylladb.com/scylla-service-type: identity
+      scylla/cluster: replace-with-your-scyllacluster-name
+  components:
+    prometheus:
+      storage:
+        volumeClaimTemplate:
+          spec:
+            resources:
+              requests:
+                storage: 1Gi
+    grafana:
+      exposeOptions:
+        webInterface:
+          ingress:
+            ingressClassName: haproxy
+            dnsDomains:
+            - test-grafana.test.svc.cluster.local
+            annotations:
+              haproxy-ingress.github.io/ssl-passthrough: "true"
+
+
+

For details, refer to the below command:

+
$ kubectl explain scylladbmonitorings.scylla.scylladb.com/v1alpha1
+
+
+
+

Deploy managed monitoring

+

Note: as of v1.8, ScyllaDBMonitoring is experimental. The API is currently in version v1alpha1 and may change in future versions.

+
+

Requirements

+

Before you can set up your ScyllaDB monitoring, you need Scylla Operator already installed in your Kubernetes cluster. +For more information on how to deploy Scylla Operator, see:

+ +

The above example of the monitoring setup also makes use of HAProxy Ingress and Prometheus Operator. +You can deploy them in your Kubernetes cluster using the provided third party examples. If you already have them deployed +in your cluster, you can skip the below steps.

+
+

Deploy Prometheus Operator

+

Deploy Prometheus Operator using kubectl:

+
$ kubectl -n prometheus-operator apply --server-side -f ./examples/third-party/prometheus-operator
+
+
+
+
Wait for Prometheus Operator to roll out
+
$ kubectl -n prometheus-operator rollout status --timeout=5m deployments.apps/prometheus-operator
+deployment "prometheus-operator" successfully rolled out
+
+
+
+
+
+

Deploy HAProxy Ingress

+

Deploy HAProxy Ingress using kubectl:

+
$ kubectl -n haproxy-ingress apply --server-side -f ./examples/third-party/haproxy-ingress
+
+
+
+
Wait for HAProxy Ingress to roll out
+
$ kubectl -n haproxy-ingress rollout status --timeout=5m deployments.apps/haproxy-ingress
+deployment "haproxy-ingress" successfully rolled out
+
+
+
+
+
+
+

Deploy ScyllaDBMonitoring

+

First, update the endpointsSelector in examples/monitoring/v1alpha1/scylladbmonitoring.yaml with a label +matching your ScyllaCluster instance name.

+

Deploy the monitoring setup using kubectl:

+
$ kubectl -n scylla apply --server-side -f ./examples/monitoring/v1alpha1/scylladbmonitoring.yaml
+
+
+

Scylla Operator will notice the new ScyllaDBMonitoring object, and it will reconcile all necessary resources.

+
+

Wait for ScyllaDBMonitoring to roll out

+
$ kubectl wait --for='condition=Progressing=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Degraded=False' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+$ kubectl wait --for='condition=Available=True' scylladbmonitorings.scylla.scylladb.com/example
+scylladbmonitoring.scylla.scylladb.com/example condition met
+
+
+
+
+

Wait for Prometheus to roll out

+
$ kubectl rollout status --timeout=5m statefulset.apps/prometheus-example
+statefulset rolling update complete 1 pods at revision prometheus-example-65b89d55bb...
+
+
+
+
+

Wait for Grafana to roll out

+
$ kubectl rollout status --timeout=5m deployments.apps/example-grafana
+deployment "example-grafana" successfully rolled out
+
+
+
+
+
+

Accessing Grafana

+

For accessing Grafana service from outside the Kubernetes cluster we recommend using an Ingress, although there are many other ways to do so. +When using Ingress, what matters is to direct your packets to the ingress controller Service/Pods and have the correct TLS SNI field set by the caller when reaching out to the service, so it is routed properly, and your client can successfully validate the grafana serving certificate. +This is easier when you are using a real DNS domain that resolves to your Ingress controller’s IP address but most clients and tools allow setting the SNI field manually.

+
+
+

Prerequisites

+

To access Grafana, you first need to collect the serving CA and the credentials.

+
$ GRAFANA_SERVING_CERT="$( kubectl -n scylla get secret/example-grafana-serving-ca --template '{{ index .data "tls.crt" }}' | base64 -d )"
+$ GRAFANA_USER="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "username" }}' | base64 -d )"
+$ GRAFANA_PASSWORD="$( kubectl -n scylla get secret/example-grafana-admin-credentials --template '{{ index .data "password" }}' | base64 -d )"
+
+
+
+
+

Connecting through Ingress using a resolvable domain

+

In production clusters, the Ingress controller and appropriate DNS records should be set up already. Often there is already a generic wildcard record like *.app.mydomain pointing to the Ingress controller’s external IP. For custom service domains, it is usually a CNAME pointing to the Ingress controller’s A record.

+

Note: The ScyllaDBMonitoring example creates an Ingress object with test-grafana.test.svc.cluster.local DNS domain that you should adjust to your domain. Below examples use example-grafana.apps.mydomain.

+

Note: To test a resolvable domain from your machine without creating DNS records, you can adjust /etc/hosts or similar.

+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://example-grafana.apps.mydomain" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+

Connecting through Ingress using an unresolvable domain

+

To connect to an Ingress without a resolvable domain you first need to find out your Ingress controller’s IP that can be resolved externally. Again, there are many ways to do so beyond the below examples.

+

Unless stated otherwise, we assume your Ingress is running on port 443.

+
$ INGRESS_PORT=443
+
+
+
+

Variants

+
+
Ingress ExternalIP
+

When you are running in a real cluster there is usually a cloud LoadBalancer or a bare metal alternative providing you with an externally reachable IP address.

+
$ INGRESS_IP="$( kubectl -n=haproxy-ingress get service/haproxy-ingress --template='{{ ( index .status.loadBalancer.ingress 0 ).ip }}' )"
+
+
+
+
+
Ingress NodePort
+

NodePort is slightly less convenient, but it’s available in development clusters as well.

+
$ INGRESS_IP="$( kubectl get nodes --template='{{ $internal_ip := "" }}{{ $external_ip := "" }}{{ range ( index .items 0 ).status.addresses }}{{ if eq .type "InternalIP" }}{{ $internal_ip = .address }}{{ else if eq .type "ExternalIP" }}{{ $external_ip = .address }}{{ end }}{{ end }}{{ if $external_ip }}{{ $external_ip }}{{ else }}{{ $internal_ip }}{{ end }}' )"
+$ INGRESS_PORT="$( kubectl -n=haproxy-ingress get services/haproxy-ingress --template='{{ range .spec.ports }}{{ if eq .port 443 }}{{ .nodePort }}{{ end }}{{ end }}' )"
+
+
+
+
+
Connection
+
$ curl --fail -s -o /dev/null -w '%{http_code}' -L --cacert <( echo "${GRAFANA_SERVING_CERT}" ) "https://test-grafana.test.svc.cluster.local:${INGRESS_PORT}" --resolve "test-grafana.test.svc.cluster.local:${INGRESS_PORT}:${INGRESS_IP}" --user "${GRAFANA_USER}:${GRAFANA_PASSWORD}"
+200
+
+
+
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/nodeoperations/automatic_cleanup.html b/v1.9/nodeoperations/automatic_cleanup.html new file mode 100644 index 00000000000..583a444e27a --- /dev/null +++ b/v1.9/nodeoperations/automatic_cleanup.html @@ -0,0 +1,586 @@ + + + + + + + + + + + + + Automatic cleanup and replacement in case when k8s node is lost | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
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+

Automatic cleanup and replacement in case when k8s node is lost

+

In case when your k8s cluster loses one of the nodes due to incident or explicit removal, Scylla Pods may become unschedulable due to PVC node affinity.

+

When automaticOrphanedNodeCleanup flag is enabled in your ScyllaCluster, Scylla Operator will perform automatic +node replacement of a Pod which lost his bound resources.

+
+ + +
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+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/nodeoperations/index.html b/v1.9/nodeoperations/index.html new file mode 100644 index 00000000000..69052cefddf --- /dev/null +++ b/v1.9/nodeoperations/index.html @@ -0,0 +1,586 @@ + + + + + + + + + + + + + Node operations using Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Node operations using Scylla Operator

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Choose a topic:

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+ + + + + + + \ No newline at end of file diff --git a/v1.9/nodeoperations/maintenance_mode.html b/v1.9/nodeoperations/maintenance_mode.html new file mode 100644 index 00000000000..0929065918f --- /dev/null +++ b/v1.9/nodeoperations/maintenance_mode.html @@ -0,0 +1,595 @@ + + + + + + + + + + + + + Maintenance mode | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

Maintenance mode

+

When maintenance mode is enabled, readiness probe of Scylla Pod will always return failure and liveness probe will always succeed. This causes that Pod under maintenance +is being removed from K8s Load Balancer and DNS registry but Pod itself stays alive.

+

This allows the Scylla Operator to interact with Scylla and Scylla dependencies inside the Pod. +For example user may turn off Scylla process, do something with the filesystem and bring the process back again.

+

To enable maintenance mode add scylla/node-maintenance label to service in front of Scylla Pod.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance=""
+
+
+

To disable, simply remove this label from service.

+
kubectl -n scylla label svc simple-cluster-us-east1-b-us-east1-2 scylla/node-maintenance-
+
+
+
+ + +
+ + + + + + + +
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+ + + + + + + \ No newline at end of file diff --git a/v1.9/nodeoperations/replace_node.html b/v1.9/nodeoperations/replace_node.html new file mode 100644 index 00000000000..ad129f2fa61 --- /dev/null +++ b/v1.9/nodeoperations/replace_node.html @@ -0,0 +1,669 @@ + + + + + + + + + + + + + Replacing a Scylla node | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

Replacing a Scylla node

+
+

Replacing a dead node

+

In the case of a host failure, it may not be possible to bring back the node to life.

+

Replace dead node operation will cause the other nodes in the cluster to stream data to the node that was replaced. +This operation can take some time (depending on the data size and network bandwidth).

+

This procedure is for replacing one dead node. To replace more than one dead node, run the full procedure to completion one node at a time

+

Procedure

+
    +
  1. Verify the status of the node using nodetool status command, the node with status DN is down and need to be replaced

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.63 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +DN  10.43.43.51    74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  2. +
  3. Identify service which is bound to down node by checking IP address

    +
    kubectl -n scylla get svc
    +NAME                                    TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)                                                           AGE
    +simple-cluster-client                   ClusterIP   None            <none>        9180/TCP                                                          3h12m
    +simple-cluster-us-east-1-us-east-1a-0   ClusterIP   10.43.231.189   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h12m
    +simple-cluster-us-east-1-us-east-1a-1   ClusterIP   10.43.125.110   <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h11m
    +simple-cluster-us-east-1-us-east-1a-2   ClusterIP   10.43.43.51     <none>        7000/TCP,7001/TCP,7199/TCP,10001/TCP,9042/TCP,9142/TCP,9160/TCP   3h5m
    +
    +
    +
  4. +
  5. Drain node which we would like to replace using. This command may delete your data from local disks attached to given node!

    +
    kubectl drain gke-scylla-demo-default-pool-b4b390a1-6j12 --ignore-daemonsets --delete-local-data
    +
    +
    +

    Pod which will be replaced should enter the Pending state

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h21m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h19m
    +simple-cluster-us-east-1-us-east-1a-2   0/2     Pending   0          8m14s
    +
    +
    +
  6. +
  7. To being node replacing, add scylla/replace="" label to service bound to pod we are replacing.

    +
    kubectl -n scylla label svc simple-cluster-us-east-1-us-east-1a-2 scylla/replace=""
    +
    +
    +

    Your failed Pod should be recreated on available k8s node

    +
    kubectl -n scylla get pods
    +NAME                                    READY   STATUS    RESTARTS   AGE
    +simple-cluster-us-east-1-us-east-1a-0   2/2     Running   0          3h27m
    +simple-cluster-us-east-1-us-east-1a-1   2/2     Running   0          3h25m
    +simple-cluster-us-east-1-us-east-1a-2   1/2     Running   0          9s
    +
    +
    +

    Because other nodes in cluster must stream data to new node this operation might take some time depending on how much data your cluster stores. +After bootstraping is over, your new Pod should be ready to go. +Old one shouldn’t be no longer visible in nodetool status

    +
    kubectl -n scylla exec -ti simple-cluster-us-east-1-us-east-1a-0 -c scylla -- nodetool status
    +Datacenter: us-east-1
    +=====================
    +Status=Up/Down
    +|/ State=Normal/Leaving/Joining/Moving
    +--  Address        Load       Tokens       Owns    Host ID                               Rack
    +UN  10.43.125.110  74.62 KB   256          ?       8ebd6114-969c-44af-a978-87a4a6c65c3e  us-east-1a
    +UN  10.43.231.189  91.03 KB   256          ?       35d0cb19-35ef-482b-92a4-b63eee4527e5  us-east-1a
    +UN  10.43.191.172  74.77 KB   256          ?       1ffa7a82-c41c-4706-8f5f-4d45a39c7003  us-east-1a
    +
    +
    +
  8. +
  9. Run the repair on the cluster to make sure that the data is synced with the other nodes in the cluster. +You can use Scylla Manager to run the repair.

  10. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/nodeoperations/restore.html b/v1.9/nodeoperations/restore.html new file mode 100644 index 00000000000..8b8245188ba --- /dev/null +++ b/v1.9/nodeoperations/restore.html @@ -0,0 +1,657 @@ + + + + + + + + + + + + + Restore from backup | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+

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+
+ + + + + +
+

Restore from backup

+

This procedure will describe how to restore from backup taken using Scylla Manager to a fresh empty cluster of any size.

+

First identify to which snapshot you want to restore. To get list of available snapshot execute following command on Scylla Manager Pod.

+
sctool backup list -c <CLUSTER_ID> --all-clusters -L <BACKUP_LOCATION>
+
+
+

Where:

+
    +
  • CLUSTER_ID - is a name of a cluster or ID under which ScyllaCluster was registered. You can find it in ScyllaCluster Status.

  • +
  • BACKUP_LOCATION - is a location where backup is stored. For example, for bucket called backups stored in AWS S3, location is s3:backups.

  • +
+
sctool backup list -c simple-cluster --all-clusters -L s3:backups
+Snapshots:
+  - sm_20201227144037UTC (409MiB)
+  - sm_20201228145917UTC (434MiB)
+Keyspaces:
+  - users (9 tables)
+  - system_auth (2 tables)
+  - system_distributed (3 tables)
+  - system_schema (13 tables)
+  - system_traces (5 tables)
+
+
+

To get the list of files use:

+
sctool backup files -c <CLUSTER_ID> -L <BACKUP_LOCATION> -T <SNAPSHOT_TAG>
+
+
+

Where:

+
    +
  • SNAPSHOT_TAG - name of snapshot you want to restore.

  • +
+

Before we start restoring the data, we have to restore the schema. +The first output line is a path to schemas archive, for example:

+
s3://backups/backup/schema/cluster/ed63b474-2c05-4f4f-b084-94541dd86e7a/task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz      ./
+
+
+

To download this archive you can use AWS CLI tool aws s3 cp.

+

This archive contains a single CQL file for each keyspace in the backup.

+
tar -ztvf task_287791d9-c257-4850-aef5-7537d6e69d90_tag_sm_20201228145917UTC_schema.tar.gz
+-rw------- 0/0           12671 2020-12-28 13:17 users.cql
+-rw------- 0/0            2216 2020-12-28 13:17 system_auth.cql
+-rw------- 0/0             921 2020-12-28 13:17 system_distributed.cql
+-rw------- 0/0           12567 2020-12-28 13:17 system_schema.cql
+-rw------- 0/0            4113 2020-12-28 13:17 system_traces.cql
+
+
+

Extract this archive and copy each schema file to one of the cluster Pods by:

+
kubectl -n scylla cp users.cql simple-cluster-us-east-1-us-east-1a-0:/tmp/users.cql -c scylla
+
+
+

To import schema simply execute:

+
kubectl -n scylla exec simple-cluster-us-east-1-us-east-1a-0 -c scylla -- cqlsh -f /tmp/users.cql
+
+
+

Once the schema is recreated we can proceed to downloading data files.

+

First let’s save a list of snapshot files to file called backup_files.out:

+
kubectl -n scylla-manager exec deployment.apps/scylla-manager-controller -- sctool backup files -c simple-cluster -L s3:backups -T sm_20201228145917UTC > backup_files.out
+
+
+

We will be using sstableloader to restore data. sstableloader needs a specific directory structure to work namely: <keyspace>/<table>/<contents> +To create this directory structure and download all the files execute these commands:

+
mkdir snapshot
+cd snapshot
+# Create temporary directory structure.
+cat ../backup_files.out | awk '{print $2}' | xargs mkdir -p
+# Download snapshot files.
+cat ../backup_files.out | xargs -n2 aws s3 cp
+
+
+

To load data into cluster pass cluster address to sstableloader together with path to data files and credentials:

+
sstableloader -d 'simple-cluster-us-east-1-us-east-1a-0.scylla.svc,simple-cluster-us-east-1-us-east-1a-1.scylla.svc,simple-cluster-us-east-1-us-east-1a-2.scylla.svc' ./users/data_0 --username scylla --password <password>
+
+
+

Depending on how big is your data set, this operation may take some time. +Once it finishes, data from the snapshot is restored and you may clean up the host.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/nodeoperations/scylla_upgrade.html b/v1.9/nodeoperations/scylla_upgrade.html new file mode 100644 index 00000000000..8324a7de711 --- /dev/null +++ b/v1.9/nodeoperations/scylla_upgrade.html @@ -0,0 +1,668 @@ + + + + + + + + + + + + + Upgrading version of Scylla | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Caution

+

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+
+ + + +
+ +
+ +
+

Upgrading version of Scylla

+

To upgrade Scylla version using Operator user have to modify existing ScyllaCluster definition.

+

In this example cluster will be upgraded to version 4.4.5.

+
kubectl -n scylla patch ScyllaCluster simple-cluster  -p '{"spec":{"version": "4.4.5"}}' --type=merge
+
+
+

Operator supports two types of version upgrades:

+
    +
  1. Patch upgrade

  2. +
  3. Generic upgrade

  4. +
+

Patch upgrade

+

Patch upgrade is executed when only patch version change is detected according to semantic versioning format. +Procedure simply rolls out a restart of whole cluster and upgrades Scylla container image for each node one by one.

+

Example: 4.0.0 -> 4.0.1

+

Generic upgrade

+

Generic upgrades are executed for the non patch version changes.

+

Example: 4.0.0 -> 2020.1.0 or 4.0.0 -> 4.1.0 or even 4.0.0 -> nightly

+

User can observe current state of upgrade in ScyllaCluster status.

+
kubectl -n scylla describe ScyllaCluster simple-cluster
+[...]
+Status:
+  Racks:
+    us-east-1a:
+      Members:        3
+      Ready Members:  3
+      Version:        4.1.9
+  Upgrade:
+    Current Node:         simple-cluster-us-east-1-us-east-1a-2
+    Current Rack:         us-east-1a
+    Data Snapshot Tag:    so_data_20201228135002UTC
+    From Version:         4.1.9
+    State:                validate_upgrade
+    System Snapshot Tag:  so_system_20201228135002UTC
+    To Version:           4.2.2
+
+
+

Each upgrade begins with taking a snapshot of system and system_schema keyspaces on all nodes in parallel. +Name of this snapshot tag is saved in upgrade status under System Snapshot Tag.

+

Before nodes in rack are upgraded, underlying StatefulSet is changed to use OnDelete UpgradeStrategy. +This allows Operator have a full control over when Pod image is changed.

+

When a node is being upgraded, maintenance mode is enabled, then the node is drained and snapshot of all data keyspaces is taken. +Snapshot tag is saved under Data Snapshot Tag and is the same for all nodes during the procedure. +Once everything is set up, maintenance mode is disabled and Scylla Pod is deleted. Underlying StatefulSet will bring up a new +Pod with upgraded version. +Once Pod will become ready, data snapshot from this particular node is removed, and Operator moves to next node.

+

Once every rack is upgraded, system snapshot is removed from all nodes in parallel and previous StatefulSet UpgradeStrategy is restored. +At this point, all your nodes should be already in desired version.

+

Current state of upgrade can be traced using Current Node, Current Rack and State status fields.

+
    +
  • Current Node shows which node is being upgraded.

  • +
  • Current Rack displays which rack is being upgraded.

  • +
  • State contain information at which stage upgrade is.

  • +
+

State can have following values:

+
    +
  • begin_upgrade - upgrade is starting

  • +
  • check_schema_agreement - Operator waits until all nodes reach schema agreement. It waits for it for 1 minute, prints an error log message and check is retried.

  • +
  • create_system_backup - system keyspaces snapshot is being taken

  • +
  • find_next_rack - Operator finds out which rack must be upgraded next, decision is saved in Current Rack

  • +
  • upgrade_image_in_pod_spec - Image and UpgradeStrategy is upgraded in underlying StatefulSet

  • +
  • find_next_node - Operator finds out which node must be upgraded next, decision is saved in Current Node

  • +
  • enable_maintenance_mode - maintenance mode is being enabled

  • +
  • drain_node - node is being drained

  • +
  • backup_data - snapshot of data keyspaces is being taken

  • +
  • disable_maintenance_mode - maintenance mode is being disabled

  • +
  • delete_pod - Scylla Pod is being deleted

  • +
  • validate_upgrade - Operator validates if new pod enters Ready state and if Scylla version is upgraded

  • +
  • clear_data_backup - snapshot of data keyspaces is being removed

  • +
  • clear_system_backup - snapshot of system keyspaces is being removed

  • +
  • restore_upgrade_strategy - restore UpgradeStrategy in underlying StatefulSet

  • +
  • finish_upgrade - upgrade cleanup

  • +
+

Recovering from upgrade failure

+

Upgrade may get stuck on validate_upgrade stage. This happens when Scylla Pod refuses to properly boot up.

+

To continue with upgrade, first turn off operator by scaling Operator replicas to zero:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=0
+
+
+

Then user have to manually resolve issue with Scylla by checking what is the root cause of a failure in Scylla container logs. +If needed data and system keyspaces SSTable snapshots are available on the node. You can check ScyllaCluster status for their names.

+

Once issue is resolved and Scylla Pod is up and running (Pod is in Ready state), scale Operator back to two replicas:

+
kubectl -n scylla-operator scale deployment.apps/scylla-operator --replicas=2
+
+
+

Operator should continue upgrade process from where it left off.

+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/objects.inv b/v1.9/objects.inv new file mode 100644 index 00000000000..be70941f91c --- /dev/null +++ b/v1.9/objects.inv @@ -0,0 +1,5 @@ +# Sphinx inventory version 2 +# Project: Scylla Operator +# Version: +# The remainder of this file is compressed using zlib. +xڅTˎ ((hfDMFJ{lX<,c={).uԀuZ x?NI8NËI׀;m; -2C<^X%'C<'ACAzDj7*I~AF4KH~oG֢T%!wqуig\Y(Z9G-BruXOZ cK<" aoД T {1cE L1]oa \ No newline at end of file diff --git a/v1.9/performance.html b/v1.9/performance.html new file mode 100644 index 00000000000..35361f5dd70 --- /dev/null +++ b/v1.9/performance.html @@ -0,0 +1,670 @@ + + + + + + + + + + + + + Performance tuning | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+
+ Menu +
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Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Performance tuning

+

Scylla Operator 1.6 introduces a new experimental feature allowing users to optimize Kubernetes nodes.

+
+

Node tuning

+

Starting from Operator 1.6, a new CRD called NodeConfig is available, allowing users to target Nodes which should be tuned. +When a Node is supposed to be optimized, the Scylla Operator creates a DaemonSet covering these Nodes. +Nodes matching the provided placement conditions will be subject to tuning.

+

Below example NodeConfig tunes nodes having scylla.scylladb.com/node-type=scylla label:

+
apiVersion: scylla.scylladb.com/v1alpha1
+kind: NodeConfig
+metadata:
+ name: cluster
+spec:
+ placement:
+   nodeSelector:
+     scylla.scylladb.com/node-type: scylla
+
+
+

For more details about new CRD use:

+
kubectl explain nodeconfigs.scylla.scylladb.com/v1alpha1
+
+
+

For all optimizations we use a Python script available in the Scylla image called perftune. +Perftune executes the performance optmizations like tuning the kernel, network, disk devices, spreading IRQs across CPUs and more.

+

Tuning consists of two separate optimizations: common node tuning, and tuning based on Scylla Pods and their resource assignment. +Node tuning is executed immediately. Pod tuning is executed when Scylla Pod lands on the same Node.

+

Scylla works most efficently when it’s pinned to CPU and not interrupted. +One of the most common causes of context-switching are network interrupts. Packets coming to a node need to be processed, +and this requires CPU shares.

+

On K8s we always have at least a couple of processes running on the node: kubelet, kubernetes provider applications, daemons etc. +These processes require CPU shares, so we cannot dedicate entire node processing power to Scylla, we need to leave space for others.
We take advantage of it, and we pin IRQs to CPUs not used by any Scylla Pods exclusively.

+

Tuning resources are created in a special namespace called scylla-operator-node-tuning.

+

The tuning is applied only to pods with Guaranteed QoS class. Please double check your ScyllaCluster resource specification +to see if it meets all conditions.

+
+
+

Kubernetes tuning

+

By default, the kubelet uses the CFS quota to enforce pod CPU limits.
When the node runs many CPU-bound pods, the workload can move around different CPU cores depending on whether the pod +is throttled and which CPU cores are available. +However, kubelet may be configured to assign CPUs exclusively, by setting the CPU manager policy to static.

+

Setting up kubelet configuration is provider specific. Please check the docs for your distribution or talk to your +provider.

+

Only pods within the Guaranteed QoS class) can take advantage of this option. +When such pod lands on a Node, kubelet will pin them to specific CPUs, and those won’t be part of the shared pool.

+

In our case there are two requirements each ScyllaCluster must fulfill to receive a Guaranteed QoS class:

+
    +
  • resource request and limits must be equal or only limits have to be provided

  • +
  • agentResources must be provided and their requests and limits must be equal, or only limits have to be provided

  • +
+

An example of such a ScyllaCluster that receives a Guaranteed QoS class is below:

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: guaranteed-cluster
+  namespace: scylla
+spec:
+  version: 4.5.1
+  agentVersion: 2.5.2
+  datacenter:
+    name: us-east-1
+    racks:
+    - name: us-east-1a
+      members: 3
+      storage:
+        capacity: 500Gi
+      agentResources:
+        requests:
+          cpu: 1
+          memory: 1G
+        limits:
+          cpu: 1
+          memory: 1G
+      resources:
+        requests:
+          cpu: 4
+          memory: 16G
+        limits:
+          cpu: 4
+          memory: 16G
+
+
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/releases.html b/v1.9/releases.html new file mode 100644 index 00000000000..7567a42f3fc --- /dev/null +++ b/v1.9/releases.html @@ -0,0 +1,832 @@ + + + + + + + + + + + + + Releases | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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+ Menu +
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Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Releases

+
+

Schedule

+

We are aiming to ship a new release approximately every 6 weeks. The following release schedule is only advisory, there are no commitments made to hitting these dates.

+ + + + + + + + + + + + + + + +
ReleaseCode freezeGeneral availability
1.92022-03-012021-03-08
+
+

Supported releases

+

We support the latest 2 releases of the operator to give everyone time to upgrade.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
ReleaseGeneral availabilitySupport ends
1.82023-01-25Release of 1.10
1.72022-01-27Release of 1.9
1.62021-12-032023-01-25
1.52021-09-162022-01-27
1.42021-08-102021-12-03
1.32021-06-172021-09-16
1.22021-05-062021-08-10
1.12021-03-222021-06-17
1.02021-01-212021-05-06
+

Backport policy

+

Usually, only important bug fixes are eligible for being backported. +This may depend on the situation and assessment of the maintainers.

+
+
+
+

CI/CD

+

We use GitHub actions for our CI/CD. Every merge to a supported branch, or a creation of a tag will automatically trigger a job to build, test and publish the container image and other artifacts like helm charts. Before we publish any image, it must pass the e2e suite.

+
+

Automated promotions

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Git referenceTypeContainer image
masterbranchdocker.io/scylladb/scylla-operator:latest
vX.Ybranchdocker.io/scylladb/scylla-operator:X.Y
vX.Y.Ztagdocker.io/scylladb/scylla-operator:X.Y.Z
vX.Y.Z-alpha.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-alpha.N
vX.Y.Z-beta.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-beta.N
vX.Y.Z-rc.Ntagdocker.io/scylladb/scylla-operator:X.Y.Z-rc.N
+
+

Generally available

+

GA images aren’t build from scratch but rather promoted from an existing release candidates. When we decide a release candidate has the acceptable quality and QA sings it off, the release candidate is promoted to become the GA release. This makes sure the image has exactly the same content and SHA as the tested release candidate.

+
+
+
+

Support matrix

+

Support matrix table shows the version requirements for a particular scylla-operator version. Be sure to match these requirements, otherwise some functionality will not work.

+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
v1.9v1.8v1.7v1.6v1.5v1.4v1.3v1.2v1.1v1.0
Kubernetes>=1.21>=1.21>=1.20 && <1.25>=1.19.10 && <1.25>=1.19.10>=1.19.10>=1.19>=1.19>=1.11>=1.11
CRI APIv1v1alpha2v1alpha2v1alpha2
Scylla OS>=5.0>=5.0>=4.3>=4.3>=4.3>=4.3>=4.2>=4.2>=4.0>=4.0
Scylla Enterprise>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2021.1>=2020.1>=2020.1>=2020.1>=2020.1
Scylla Manager>=2.6>=2.6>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2>=2.2
Scylla Monitoring>=4.0>=4.0>=3.0>=3.0>=1.0>=1.0>=1.0>=1.0>=1.0>=1.0
+
+ + +
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+ + + + + + + \ No newline at end of file diff --git a/v1.9/scylla_cluster_crd.html b/v1.9/scylla_cluster_crd.html new file mode 100644 index 00000000000..ebfe37f01bc --- /dev/null +++ b/v1.9/scylla_cluster_crd.html @@ -0,0 +1,809 @@ + + + + + + + + + + + + + Scylla Cluster CRD | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Scylla Cluster CRD

+

Scylla database clusters can be created and configured using the clusters.scylla.scylladb.com custom resource definition (CRD).

+

Please refer to the the user guide walk-through for deployment instructions. +This page will explain all the available configuration options on the Scylla CRD.

+
+

Sample

+
apiVersion: scylla.scylladb.com/v1
+kind: ScyllaCluster
+metadata:
+  name: simple-cluster
+  namespace: scylla
+spec:
+  version: 2.3.1
+  repository: scylladb/scylla
+  developerMode: true
+  cpuset: false
+  automaticOrphanedNodeCleanup: true
+  repairs:
+  - name: "weekly us-east-1 repair"
+    intensity: "2"
+    interval: "7d"
+    dc: ["us-east-1"]
+  backups:
+  - name: "daily users backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "1d"
+    keyspace: ["users"]
+  - name: "weekly full cluster backup"
+    rateLimit: ["50"]
+    location: ["s3:cluster-backups"]
+    interval: "7d"
+  datacenter:
+    name: us-east-1
+    racks:
+      - name: us-east-1a
+        members: 3
+        storage:
+          capacity: 500G
+          storageClassName: local-raid-disks
+        resources:
+          requests:
+            cpu: 8
+            memory: 32Gi
+          limits:
+            cpu: 8
+            memory: 32Gi
+        placement:
+          nodeAffinity:
+            requiredDuringSchedulingIgnoredDuringExecution:
+              nodeSelectorTerms:
+                - matchExpressions:
+                  - key: failure-domain.beta.kubernetes.io/region
+                    operator: In
+                    values:
+                      - us-east-1
+                  - key: failure-domain.beta.kubernetes.io/zone
+                    operator: In
+                    values:
+                      - us-east-1a
+          tolerations:
+            - key: role
+              operator: Equal
+              value: scylla-clusters
+              effect: NoSchedule
+
+
+
+
+

Settings Explanation

+
+

Cluster Settings

+
    +
  • version: The version of Scylla to use. It is used as the image tag to pull.

  • +
  • agentVersion: The version of Scylla Manager Agent to use. It is used as the image tag to pull.

  • +
  • repository: Optional field. Specifies a custom image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • agentRepository: Optional field. Specifies a custom Scylla Manager Agent image repo. If left unset, the official docker hub repo is used (scylladb/scylla).

  • +
  • developerMode: Optional field. If it’s true, then Scylla is started in developer mode. This setting is for shared test/dev environments.

  • +
  • cpuset: Optional field. If it’s true, then the operator will start Scylla with cpu pinning for maximum performance. For this to work, you need to set the kubelet to use the static cpu policy and only specify limits in resources.

  • +
  • automaticOrphanedNodeCleanup: Optional field. Controls if automatic orphan node cleanup should be performed.

  • +
  • alternator: Optional field. Defines Alternator configuration.

    +
      +
    • port: Port on which to bind to Alternator API.

    • +
    • writeIsolation: required Desired write isolation.

    • +
    +
  • +
  • genericUpgrade: Optional field. Defines GenericUpgrade configuration.

    +
      +
    • failureStrategy: specifies which logic is executed when upgrade failure happens. Currently only Retry is supported.

    • +
    • pollInterval: specifies how often upgrade logic polls on state updates. +Increasing this value should lower number of requests sent to the kube-apiserver, but it may affect +overall time spent during upgrade.

    • +
    +
  • +
  • datacenter: Datacenter definition.

  • +
  • sysctls: Optional field. Sysctl properties to be applied during initialization.

  • +
  • scyllaArgs: Optional field. Command line argument passed to Scylla container image. Note: not all Scylla versions support it.

  • +
  • network: Optional field. Allows to customize network parameters.

    +
      +
    • hostNetworking: controls if host networking should be enabled.

    • +
    • dnsPolicy: controls Scylla Pod DNS Policy. See details.

    • +
    +
  • +
  • repairs: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
  • backups: Optional field. Repair tasks definitions. See Scylla Manager settings for details.

  • +
+

In the Scylla model, each cluster contains datacenters and each datacenter contains racks. At the moment, the operator only supports single datacenter setups.

+
+
+

Scylla Manager settings

+

Tasks are scheduled only when Scylla Manager is deployed in K8s cluster.

+

Repairs:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. Task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. The number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1", "!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • failFast - Optional field. Stop repair on first error.

  • +
  • intensity - Optional field. Specifies how many token ranges (per shard) to repair in a single Scylla repair job. By default this is 1. +If you set it to 0 the number of token ranges is adjusted to the maximum supported by node (see max_repair_ranges_in_parallel in Scylla logs). +Valid values are 0 and integers >= 1. Higher values will result in increased cluster load and slightly faster repairs. +Changing the intensity impacts repair granularity if you need to resume it, the higher the value the more work on resume. +For Scylla clusters that do not support row-level repair, intensity can be a decimal between (0,1). +In that case it specifies percent of shards that can be repaired in parallel on a repair master node. +For Scylla clusters that are row-level repair enabled, setting intensity below 1 has the same effect as setting intensity 1. +Intensity is a number passed as string due to lack of support for float values in k8s controller runtime

  • +
  • parallel - Optional field. Specifies the maximum number of Scylla repair jobs that can run at the same time (on different token ranges and replicas). +Each node can take part in at most one repair at any given moment. By default the maximum possible parallelism is used. +The effective parallelism depends on a keyspace replication factor (RF) and the number of nodes. +The formula to calculate it is as follows: number of nodes / RF, ex. for 6 node cluster with RF=3 the maximum parallelism is 2.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace", "!keyspace.table_prefix_*"] +used to include or exclude keyspaces from repair.

  • +
  • smallTableThreshold - Optional field. Enable small table optimization for tables of size lower than given threshold. +Supported units [B, MiB, GiB, TiB] (default "1GiB").

  • +
+

Backups:

+
    +
  • name - required - human readable name of the task. It must be unique across all tasks.

  • +
  • startDate - Optional field. Specifies the task start date expressed in the RFC3339 format or now[+duration], e.g. now+3d2h10m, +valid units are d, h, m, s (default “now”).

  • +
  • interval - Optional field. task schedule interval e.g. 3d2h10m, valid units are d, h, m, s (default “0”).

  • +
  • numRetries - Optional field. the number of times a scheduled task will retry to run before failing (default 3).

  • +
  • dc - Optional field. A list of datacenter glob patterns, e.g. ["dc1","!otherdc*"] used to specify the DCs to include or exclude from backup.

  • +
  • keyspace - Optional field. A list of keyspace/tables glob patterns, e.g. ["keyspace","!keyspace.table_prefix_*"] used to include or exclude keyspaces from backup.

  • +
  • location - Optional field. A list of backup locations in the format [<dc>:]<provider>:<name> ex. s3:my-bucket. +The <dc>: part is optional and is only needed when different datacenters are being used to upload data to different locations. +<name> Optional field. must be an alphanumeric string and may contain a dash and or a dot, but other characters are forbidden. +The only supported storage at the moment are s3 and gcs.

  • +
  • rateLimit - Optional field. A list of megabytes (MiB) per second rate limits expressed in the format [<dc>:]<limit>. +The <dc>: part is optional and only needed when different datacenters need different upload limits. +Set to 0 for no limit (default 100).

  • +
  • retention - Optional field. The number of backups which are to be stored (default 3).

  • +
  • snapshotParallel - Optional field. A list of snapshot parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set, the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
  • uploadParallel - Optional field. A list of upload parallelism limits in the format [<dc>:]<limit>. +The <dc>: part is optional and allows for specifying different limits in selected datacenters. +If The <dc>: part is not set the limit is global (e.g. ["dc1:2,5"]) the runs are parallel in n nodes (2 in dc1) +and n nodes in all the other datacenters.

  • +
+
+
+

Datacenter Settings

+
    +
  • name: Name of the datacenter. Usually, a datacenter corresponds to a region.

  • +
  • racks: List of racks for the specific datacenter.

  • +
+
+
+

Rack Settings

+
    +
  • name: Name of the rack. Usually, a rack corresponds to an availability zone.

  • +
  • members: Number of Scylla members for the specific rack. (In Scylla documentation, they are called nodes. We don’t call them nodes to avoid confusion as a Scylla Node corresponds to a Kubernetes Pod, not a Kubernetes Node).

  • +
  • storage: Defines the specs of the underlying storage.

    +
      +
    • capacity: Capacity of the PersistentVolume to request.

    • +
    • storageClassName: Optional field. StorageClass of PersistentVolume to request.

    • +
    +
  • +
  • resources: Defines the CPU and RAM resources for the Scylla Pods.

    +
      +
    • requests: The minimum amount of resources needed to run a Scylla container.

      +
        +
      • cpu: CPU requests.

      • +
      • memory: RAM requests.

      • +
      +
    • +
    • limits: The maximum amount of resources that can be used by a Scylla container.

      +
        +
      • cpu: CPU limits.

      • +
      • memory: RAM limits.

      • +
      +
    • +
    +
  • +
  • agentResources: Optional field. Defines the CPU and RAM resources for the Scylla Manager Agent container. See resources for details.

  • +
  • volumes: Optional field. Defines volumes available in Scylla Pod. See details.

  • +
  • volumeMounts: Optional field. Defines which volumes will be attached to Scylla container.

  • +
  • agentVolumeMounts: Optional field. Defines which volumes will be attached to Agent container.

  • +
  • scyllaConfig: Optional field. name of custom config map which will be merged with Scylla config.

  • +
  • scyllaAgentConfig: Optional field. name of custom secret which will be merged with Scylla Manager Agent config.

  • +
  • placement: Optional field. Defines the placement of Scylla Pods. Has the following subfields:

    + +
  • +
+
+
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+ + + + +
+ + + + + + + \ No newline at end of file diff --git a/v1.9/searchindex.js b/v1.9/searchindex.js new file mode 100644 index 00000000000..a18b83ef129 --- /dev/null +++ b/v1.9/searchindex.js @@ -0,0 +1 @@ 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to Scylla Operator","Deploying Scylla on EKS","Deploying Scylla on a Kubernetes Cluster","Deploying Scylla on GKE","Deploying Scylla stack using Helm Charts","Scylla Operator Documentation","Known issues","Deploying Scylla Manager on a Kubernetes Cluster","Version migrations","Monitoring","Automatic cleanup and replacement in case when k8s node is lost","Node operations using Scylla Operator","Maintenance mode","Replacing a Scylla node","Restore from backup","Upgrading version of Scylla","Performance tuning","Releases","Scylla Cluster CRD","Upgrade of Scylla 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\ No newline at end of file diff --git a/v1.9/sitemap.xml b/v1.9/sitemap.xml new file mode 100644 index 00000000000..9012105c245 --- /dev/null +++ b/v1.9/sitemap.xml @@ -0,0 +1,2 @@ + +https://operator.docs.scylladb.com/stable/contributing.htmlhttps://operator.docs.scylladb.com/stable/eks.htmlhttps://operator.docs.scylladb.com/stable/generic.htmlhttps://operator.docs.scylladb.com/stable/gke.htmlhttps://operator.docs.scylladb.com/stable/helm.htmlhttps://operator.docs.scylladb.com/stable/index.htmlhttps://operator.docs.scylladb.com/stable/known_issues.htmlhttps://operator.docs.scylladb.com/stable/manager.htmlhttps://operator.docs.scylladb.com/stable/migration.htmlhttps://operator.docs.scylladb.com/stable/monitoring.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/automatic_cleanup.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/index.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/maintenance_mode.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/replace_node.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/restore.htmlhttps://operator.docs.scylladb.com/stable/nodeoperations/scylla_upgrade.htmlhttps://operator.docs.scylladb.com/stable/performance.htmlhttps://operator.docs.scylladb.com/stable/releases.htmlhttps://operator.docs.scylladb.com/stable/scylla_cluster_crd.htmlhttps://operator.docs.scylladb.com/stable/upgrade.htmlhttps://operator.docs.scylladb.com/stable/genindex.htmlhttps://operator.docs.scylladb.com/stable/404.htmlhttps://operator.docs.scylladb.com/stable/search.html \ No newline at end of file diff --git a/v1.9/upgrade.html b/v1.9/upgrade.html new file mode 100644 index 00000000000..cc65b53c7c0 --- /dev/null +++ b/v1.9/upgrade.html @@ -0,0 +1,796 @@ + + + + + + + + + + + + + Upgrade of Scylla Operator | ScyllaDB Docs + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + +
+
+ Menu +
+
+
+
+
+ + +
+

Caution

+

+ + You're viewing documentation for a previous version of Scylla Operator. + + Switch to the latest stable version. +

+
+ + + +
+ +
+ +
+

Upgrade of Scylla Operator

+

This page describes Scylla Operator upgrade procedures.
There are two generic update procedures - via Helm and via kubectl. Before upgrading, please check this page to find out +if your target version requires additional upgrade steps.

+
+

Upgrade via Helm

+

Helm doesn’t support managing CustomResourceDefinition resources (#5871, #7735)
These are only created on first install and never updated. In order to update them, users have to do it manually.

+

Replace <release_name> with the name of your Helm release for Scylla Operator and replace <version> with the version number you want to install:

+
    +
  1. Make sure Helm chart repository is up-to-date:

    +
    helm repo add scylla-operator https://storage.googleapis.com/scylla-operator-charts/stable
    +helm repo update
    +
    +
    +
  2. +
  3. Update CRD resources. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    tmpdir=$( mktemp -d ) \
    +  && helm pull scylla-operator/scylla-operator --version <version> --untar --untardir "${tmpdir}" \
    +  && find "${tmpdir}"/scylla-operator/crds/ -name '*.yaml' -printf '-f=%p ' \
    +  | xargs kubectl apply
    +
    +
    +
  4. +
  5. Update Scylla Operator

    +
    helm upgrade --version <version> <release_name> scylla-operator/scylla-operator
    +
    +
    +
  6. +
+
+
+

Upgrade via kubectl

+

Replace <version> with the version number you want to install:

+
    +
  1. Checkout source code of version you want to use:

    +
    git checkout <version>
    +
    +
    +
  2. +
  3. Manifests use rolling minor version tag, you may want to pin it to specific version:

    +
    find deploy/operator -name "*.yaml" | xargs sed --follow-symlinks -i -E "s^docker.io/scylladb/scylla-operator:[0-9]+\.[0-9]+^docker.io/scylladb/scylla-operator:<version>^g"
    +
    +
    +
  4. +
  5. Update Scylla Operator. We recommend using --server-side flag for kubectl apply, if your version supports it.

    +
    kubectl apply -f deploy/operator
    +
    +
    +
  6. +
+
+
+
+

v1.2.0 -> v1.3.0

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.3.0:

    +
    git checkout v1.3.0
    +
    +
    +
  2. +
  3. Update Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  4. +
  5. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  6. +
+
+
+

v1.1.0 -> v1.2.0

+

1.2.0 release brought a lot of changes to the Scylla Operator deployment process. +To properly update Scylla Operator one must delete old objects and install updated ones.

+

Sidecar image is going to be upgraded automatically, so a rolling restart of your Scylla clusters is expected during the upgrade procedure.

+
    +
  1. Checkout source code of v1.2.0:

    +
    git checkout v1.2.0
    +
    +
    +
  2. +
  3. Remove old scylla operator namespace - in our case it’s called scylla-operator-system:

    +
    kubectl delete namespace scylla-operator-system --wait=true
    +
    +
    +
  4. +
  5. Remove old webhooks:

    +
    kubectl delete MutatingWebhookConfiguration scylla-operator-mutating-webhook-configuration
    +kubectl delete ValidatingWebhookConfiguration scylla-operator-validating-webhook-configuration
    +
    +
    +
  6. +
  7. Install Scylla Operator from deploy directory:

    +
    kubectl -n scylla-operator apply -f deploy/operator
    +
    +
    +
  8. +
  9. Wait until Scylla Operator is up and running:

    +
    kubectl wait --for condition=established crd/scyllaclusters.scylla.scylladb.com
    +kubectl -n scylla-operator rollout status deployment.apps/scylla-operator
    +
    +
    +
  10. +
+
+
+

v1.0.0 -> v1.1.0

+

During this update we will change probes and image for Scylla Operator. +A new version brings an automation for upgrade of sidecar image, so a rolling restart of managed Scylla clusters is expected.

+
    +
  1. Get name of StatefulSet managing Scylla Operator

    +
    kubectl --namespace scylla-operator-system get sts --selector="control-plane=controller-manager"
    +
    +NAME                                 READY   AGE
    +scylla-operator-controller-manager   1/1     95m
    +
    +
    +
  2. +
  3. Change probes and used container image by applying following patch:

    +
    spec:
    +  template:
    +    spec:
    +      containers:
    +      - name: manager
    +        image: docker.io/scylladb/scylla-operator:1.1.0
    +        livenessProbe:
    +          httpGet:
    +            path: /healthz
    +            port: 8080
    +            scheme: HTTP
    +        readinessProbe:
    +          $retainKeys:
    +          - httpGet
    +          httpGet:
    +            path: /readyz
    +            port: 8080
    +            scheme: HTTP
    +
    +
    +

    To apply above patch save it to file (operator-patch.yaml for example) and apply to Operator StatefulSet:

    +
    kubectl -n scylla-operator-system patch sts scylla-operator-controller-manager --patch "$(cat operator-patch.yaml)"
    +
    +
    +
  4. +
+
+
+

v0.3.0 -> v1.0.0

+

Note: There’s an experimental migration procedure available here.

+

v0.3.0 used a very common name as a CRD kind (Cluster). In v1.0.0 this issue was solved by using less common +kind which is easier to disambiguate. (ScyllaCluster). +This change is backward incompatible, so Scylla cluster must be turned off and recreated from scratch. +In case you need to preserve your data, refer to backup and restore guide.

+
    +
  1. Get list of existing Scylla clusters

    +
    kubectl -n scylla get cluster.scylla.scylladb.com
    +
    +NAME             AGE
    +simple-cluster   30m
    +
    +
    +
  2. +
  3. Delete each one of them

    +
    kubectl -n scylla delete cluster.scylla.scylladb.com simple-cluster
    +
    +
    +
  4. +
  5. Make sure you’re on v0.3.0 branch

    +
    git checkout v0.3.0
    +
    +
    +
  6. +
  7. Delete existing CRD and Operator

    +
    kubectl delete -f examples/generic/operator.yaml
    +
    +
    +
  8. +
  9. Checkout v1.0.0 version

    +
    git checkout v1.0.0
    +
    +
    +
  10. +
  11. Install new CRD and Scylla Operator

    +
    kubectl apply -f examples/common/operator.yaml
    +
    +
    +
  12. +
  13. Migrate your existing Scylla Cluster definition. Change apiVersion and kind from:

    +
    apiVersion: scylla.scylladb.com/v1alpha1
    +kind: Cluster
    +
    +
    +

    to:

    +
    apiVersion: scylla.scylladb.com/v1
    +kind: ScyllaCluster
    +
    +
    +
  14. +
  15. Once your cluster definition is ready, use kubectl apply to install fresh Scylla cluster.

  16. +
+
+
+ + +
+ + + + + + + +
+ +
+ + + + +
+ + + + + + + \ No newline at end of file