Auto instrumentation for mysqli

src/Instrumentation/MySqli/.gitattributes

@@ -0,0 +1,12 @@
+* text=auto
+
+*.md diff=markdown
+*.php diff=php
+
+/.gitattributes export-ignore
+/.gitignore export-ignore
+/.php-cs-fixer.php export-ignore
+/phpstan.neon.dist export-ignore
+/phpunit.xml.dist export-ignore
+/psalm.xml.dist export-ignore
+/tests export-ignore

src/Instrumentation/MySqli/.gitignore

@@ -0,0 +1 @@
+/vendor/

src/Instrumentation/MySqli/.php-cs-fixer.php

@@ -0,0 +1,43 @@
+<?php
+$finder = PhpCsFixer\Finder::create()
+    ->exclude('vendor')
+    ->exclude('var/cache')
+    ->in(__DIR__);
+
+$config = new PhpCsFixer\Config();
+return $config->setRules([
+    'concat_space' => ['spacing' => 'one'],
+    'declare_equal_normalize' => ['space' => 'none'],
+    'is_null' => true,
+    'modernize_types_casting' => true,
+    'ordered_imports' => true,
+    'php_unit_construct' => true,
+    'single_line_comment_style' => true,
+    'yoda_style' => false,
+    '@PSR2' => true,
+    'array_syntax' => ['syntax' => 'short'],
+    'blank_line_after_opening_tag' => true,
+    'blank_line_before_statement' => true,
+    'cast_spaces' => true,
+    'declare_strict_types' => true,
+    'type_declaration_spaces' => true,
+    'include' => true,
+    'lowercase_cast' => true,
+    'new_with_parentheses' => true,
+    'no_extra_blank_lines' => true,
+    'no_leading_import_slash' => true,
+    'echo_tag_syntax' => true,
+    'no_unused_imports' => true,
+    'no_useless_else' => true,
+    'no_useless_return' => true,
+    'phpdoc_order' => true,
+    'phpdoc_scalar' => true,
+    'phpdoc_types' => true,
+    'short_scalar_cast' => true,
+    'blank_lines_before_namespace' => true,
+    'single_quote' => true,
+    'trailing_comma_in_multiline' => true,
+    ])
+    ->setRiskyAllowed(true)
+    ->setFinder($finder);
+

src/Instrumentation/MySqli/README.md

@@ -0,0 +1,53 @@
+[![Releases](https://img.shields.io/badge/releases-purple)](https://github.com/opentelemetry-php/contrib-auto-mysqli/releases)
+[![Issues](https://img.shields.io/badge/issues-pink)](https://github.com/open-telemetry/opentelemetry-php/issues)
+[![Source](https://img.shields.io/badge/source-contrib-green)](https://github.com/open-telemetry/opentelemetry-php-contrib/tree/main/src/Instrumentation/MySqli)
+[![Mirror](https://img.shields.io/badge/mirror-opentelemetry--php--contrib-blue)](https://github.com/opentelemetry-php/contrib-auto-mysqli)
+[![Latest Version](http://poser.pugx.org/open-telemetry/opentelemetry-auto-mysqli/v/unstable)](https://packagist.org/packages/open-telemetry/opentelemetry-auto-mysqli/)
+[![Stable](http://poser.pugx.org/open-telemetry/opentelemetry-auto-mysqli/v/stable)](https://packagist.org/packages/open-telemetry/opentelemetry-auto-mysqli/)
+
+This is a read-only subtree split of https://github.com/open-telemetry/opentelemetry-php-contrib.
+
+# OpenTelemetry mysqli auto-instrumentation
+
+Please read https://opentelemetry.io/docs/instrumentation/php/automatic/ for instructions on how to
+install and configure the extension and SDK.
+
+## Overview
+Auto-instrumentation hooks are registered via composer, and client kind spans will automatically be created when calling following functions or methods:
+
+* `mysqli_connect`
+* `mysqli::__construct`
+* `mysqli::connect`
+* `mysqli::real_connect`
+* `mysqli_real_connect`
+
+* `mysqli_query`
+* `mysqli::query`
+* `mysqli_real_query`
+* `mysqli::real_query`
+* `mysqli_execute_query`
+* `mysqli::execute_query`
+* `mysqli_multi_query`
+* `mysqli::multi_query`
+* `mysqli_next_result`
+* `mysqli::next_result`
+
+* `mysqli_stmt::execute`
+* `mysqli_stmt_execute`
+* `mysqli_stmt::next_result`
+* `mysqli_stmt_next_result`
+
+## Limitations
+
+Transactions are not fully supported yet
+
+## Configuration
+
+### Disabling mysqli instrumentation
+
+The extension can be disabled via [runtime configuration](https://opentelemetry.io/docs/instrumentation/php/sdk/#configuration):
+
+```shell
+OTEL_PHP_DISABLED_INSTRUMENTATIONS=mysqli
+```
+

src/Instrumentation/MySqli/_register.php

@@ -0,0 +1,18 @@
+<?php
+
+declare(strict_types=1);
+
+use OpenTelemetry\Contrib\Instrumentation\MySqli\MySqliInstrumentation;
+use OpenTelemetry\SDK\Sdk;
+
+if (class_exists(Sdk::class) && Sdk::isInstrumentationDisabled(MySqliInstrumentation::NAME) === true) {
+    return;
+}
+
+if (extension_loaded('opentelemetry') === false) {
+    trigger_error('The opentelemetry extension must be loaded in order to autoload the OpenTelemetry mysqli auto-instrumentation', E_USER_WARNING);
+
+    return;
+}
+
+MySqliInstrumentation::register();

src/Instrumentation/MySqli/composer.json

@@ -0,0 +1,59 @@
+{
+  "name": "open-telemetry/opentelemetry-auto-mysqli",
+  "description": "OpenTelemetry auto-instrumentation for mysqli",
+  "keywords": [
+    "opentelemetry",
+    "otel",
+    "open-telemetry",
+    "tracing",
+    "mysql",
+    "mysqli",
+    "instrumentation"
+  ],
+  "type": "library",
+  "homepage": "https://opentelemetry.io/docs/php",
+  "readme": "./README.md",
+  "license": "Apache-2.0",
+  "minimum-stability": "dev",
+  "prefer-stable": true,
+  "require": {
+    "php": "^8.2",
+    "ext-mysqli": "*",
+    "ext-opentelemetry": "*",
+    "open-telemetry/api": "^1.0",
+    "open-telemetry/sem-conv": "^1.27.1",
+    "symfony/polyfill-mbstring": "^1.31"
+  },
+  "suggest": {
+    "ext-mbstring": "For better performance than symfony/polyfill-mbstring"
+  },
+  "require-dev": {
+    "friendsofphp/php-cs-fixer": "^3",
+    "phan/phan": "^5.0",
+    "php-http/mock-client": "*",
+    "phpstan/phpstan": "^1.1",
+    "phpstan/phpstan-phpunit": "^1.0",
+    "psalm/plugin-phpunit": "^0.18.4",
+    "open-telemetry/sdk": "^1.0",
+    "phpunit/phpunit": "^9.5",
+    "vimeo/psalm": "^5.0"
+  },
+  "autoload": {
+    "psr-4": {
+      "OpenTelemetry\\Contrib\\Instrumentation\\MySqli\\": "src/"
+    },
+    "files": [
+      "_register.php"
+    ]
+  },
+  "autoload-dev": {
+    "psr-4": {
+      "OpenTelemetry\\Tests\\Instrumentation\\MySqli\\": "tests/"
+    }
+  },
+  "config": {
+    "allow-plugins": {
+      "php-http/discovery": false
+    }
+  }
+}

src/Instrumentation/MySqli/phpstan.neon.dist

@@ -0,0 +1,9 @@
+includes:
+    - vendor/phpstan/phpstan-phpunit/extension.neon
+
+parameters:
+    tmpDir: var/cache/phpstan
+    level: 5
+    paths:
+        - src
+        - tests

src/Instrumentation/MySqli/phpunit.xml.dist

@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<phpunit
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:noNamespaceSchemaLocation="https://schema.phpunit.de/9.5/phpunit.xsd"
+    backupGlobals="false"
+    backupStaticAttributes="false"
+    cacheResult="false"
+    colors="false"
+    convertErrorsToExceptions="true"
+    convertNoticesToExceptions="true"
+    convertWarningsToExceptions="true"
+    forceCoversAnnotation="false"
+    processIsolation="false"
+    stopOnError="false"
+    stopOnFailure="false"
+    stopOnIncomplete="false"
+    stopOnSkipped="false"
+    stopOnRisky="false"
+    timeoutForSmallTests="1"
+    timeoutForMediumTests="10"
+    timeoutForLargeTests="60"
+    verbose="true">
+
+    <coverage processUncoveredFiles="true" disableCodeCoverageIgnore="false">
+        <include>
+            <directory>src</directory>
+        </include>
+    </coverage>
+
+    <php>
+        <ini name="date.timezone" value="UTC" />
+        <ini name="display_errors" value="On" />
+        <ini name="display_startup_errors" value="On" />
+        <ini name="error_reporting" value="E_ALL" />
+    </php>
+
+    <testsuites>
+        <testsuite name="unit">
+            <directory>tests/Unit</directory>
+        </testsuite>
+        <testsuite name="integration">
+            <directory>tests/Integration</directory>
+        </testsuite>
+    </testsuites>
+
+</phpunit>

src/Instrumentation/MySqli/psalm.xml.dist

@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<psalm
+    errorLevel="3"
+    cacheDirectory="var/cache/psalm"
+    findUnusedBaselineEntry="true"
+    findUnusedCode="false"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xmlns="https://getpsalm.org/schema/config"
+    xsi:schemaLocation="https://getpsalm.org/schema/config vendor/vimeo/psalm/config.xsd">
+    <projectFiles>
+        <directory name="src"/>
+        <directory name="tests"/>
+    </projectFiles>
+    <plugins>
+        <pluginClass class="Psalm\PhpUnitPlugin\Plugin"/>
+    </plugins>
+</psalm>