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clone_mirror.go
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clone_mirror.go
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// Copyright 2020 PingCAP, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// See the License for the specific language governing permissions and
// limitations under the License.
package repository
import (
"fmt"
"os"
"path"
"path/filepath"
"strings"
"time"
"github.com/pingcap/tiup/pkg/cluster/template/install"
"github.com/pingcap/errors"
ru "github.com/pingcap/tiup/pkg/repository/utils"
"github.com/pingcap/tiup/pkg/repository/v1manifest"
"github.com/pingcap/tiup/pkg/set"
"github.com/pingcap/tiup/pkg/utils"
"golang.org/x/sync/errgroup"
)
const defaultJobs = 1
// CloneOptions represents the options of clone a remote mirror
type CloneOptions struct {
Archs []string
OSs []string
Versions []string
Full bool
Components map[string]*[]string
Prefix bool
Jobs uint
}
// CloneMirror clones a local mirror from the remote repository
func CloneMirror(repo *V1Repository,
components []string,
targetDir string,
selectedVersions []string,
options CloneOptions) error {
if strings.TrimRight(targetDir, "/") == strings.TrimRight(repo.Mirror().Source(), "/") {
return errors.Errorf("Refusing to clone from %s to %s", targetDir, repo.Mirror().Source())
}
fmt.Printf("Start to clone mirror, targetDir is %s, source mirror is %s, selectedVersions are [%s]\n", targetDir, repo.Mirror().Source(), strings.Join(selectedVersions, ","))
fmt.Println("If this does not meet expectations, please abort this process, read `tiup mirror clone --help` and run again")
if err := utils.MkdirAll(targetDir, 0755); err != nil {
return err
}
// Temporary directory is used to save the unverified tarballs
tmpDir := filepath.Join(targetDir, fmt.Sprintf("_tmp_%d", time.Now().UnixNano()))
keyDir := filepath.Join(targetDir, "keys")
if err := utils.MkdirAll(tmpDir, 0755); err != nil {
return err
}
if err := utils.MkdirAll(keyDir, 0755); err != nil {
return err
}
defer os.RemoveAll(tmpDir)
fmt.Println("Arch", options.Archs)
fmt.Println("OS", options.OSs)
if len(options.OSs) == 0 || len(options.Archs) == 0 {
return nil
}
var (
initTime = time.Now()
expiresAt = initTime.Add(50 * 365 * 24 * time.Hour)
root = v1manifest.NewRoot(initTime)
index = v1manifest.NewIndex(initTime)
)
// All offline expires at 50 years to prevent manifests stale
root.SetExpiresAt(expiresAt)
index.SetExpiresAt(expiresAt)
keys := map[string][]*v1manifest.KeyInfo{}
for _, ty := range []string{
v1manifest.ManifestTypeRoot,
v1manifest.ManifestTypeIndex,
v1manifest.ManifestTypeSnapshot,
v1manifest.ManifestTypeTimestamp,
} {
if err := v1manifest.GenAndSaveKeys(keys, ty, int(v1manifest.ManifestsConfig[ty].Threshold), keyDir); err != nil {
return err
}
}
// initial manifests
manifests := map[string]v1manifest.ValidManifest{
v1manifest.ManifestTypeRoot: root,
v1manifest.ManifestTypeIndex: index,
}
signedManifests := make(map[string]*v1manifest.Manifest)
genkey := func() (string, *v1manifest.KeyInfo, error) {
priv, err := v1manifest.GenKeyInfo()
if err != nil {
return "", nil, err
}
id, err := priv.ID()
if err != nil {
return "", nil, err
}
return id, priv, nil
}
// Initialize the index manifest
ownerkeyID, ownerkeyInfo, err := genkey()
if err != nil {
return errors.Trace(err)
}
// save owner key
if _, err := v1manifest.SaveKeyInfo(ownerkeyInfo, "pingcap", keyDir); err != nil {
return errors.Trace(err)
}
ownerkeyPub, err := ownerkeyInfo.Public()
if err != nil {
return errors.Trace(err)
}
index.Owners["pingcap"] = v1manifest.Owner{
Name: "PingCAP",
Keys: map[string]*v1manifest.KeyInfo{
ownerkeyID: ownerkeyPub,
},
Threshold: 1,
}
snapshot := v1manifest.NewSnapshot(initTime)
snapshot.SetExpiresAt(expiresAt)
componentManifests, err := cloneComponents(repo, components, selectedVersions, targetDir, tmpDir, options)
if err != nil {
return err
}
for name, component := range componentManifests {
component.SetExpiresAt(expiresAt)
fname := fmt.Sprintf("%s.json", name)
// TODO: support external owner
signedManifests[component.ID], err = v1manifest.SignManifest(component, ownerkeyInfo)
if err != nil {
return err
}
index.Components[component.ID] = v1manifest.ComponentItem{
Owner: "pingcap",
URL: fmt.Sprintf("/%s", fname),
}
}
// sign index and snapshot
signedManifests[v1manifest.ManifestTypeIndex], err = v1manifest.SignManifest(index, keys[v1manifest.ManifestTypeIndex]...)
if err != nil {
return err
}
// snapshot and timestamp are the last two manifests to be initialized
// Initialize timestamp
timestamp := v1manifest.NewTimestamp(initTime)
timestamp.SetExpiresAt(expiresAt)
manifests[v1manifest.ManifestTypeTimestamp] = timestamp
manifests[v1manifest.ManifestTypeSnapshot] = snapshot
// Initialize the root manifest
for _, m := range manifests {
if err := root.SetRole(m, keys[m.Base().Ty]...); err != nil {
return err
}
}
// Sign root
signedManifests[v1manifest.ManifestTypeRoot], err = v1manifest.SignManifest(root, keys[v1manifest.ManifestTypeRoot]...)
if err != nil {
return err
}
// init snapshot
snapshot, err = snapshot.SetVersions(signedManifests)
if err != nil {
return err
}
signedManifests[v1manifest.ManifestTypeSnapshot], err = v1manifest.SignManifest(snapshot, keys[v1manifest.ManifestTypeSnapshot]...)
if err != nil {
return err
}
timestamp, err = timestamp.SetSnapshot(signedManifests[v1manifest.ManifestTypeSnapshot])
if err != nil {
return errors.Trace(err)
}
signedManifests[v1manifest.ManifestTypeTimestamp], err = v1manifest.SignManifest(timestamp, keys[v1manifest.ManifestTypeTimestamp]...)
if err != nil {
return err
}
for _, m := range signedManifests {
fname := filepath.Join(targetDir, m.Signed.Filename())
switch m.Signed.Base().Ty {
case v1manifest.ManifestTypeRoot:
err := v1manifest.WriteManifestFile(FnameWithVersion(fname, m.Signed.Base().Version), m)
if err != nil {
return err
}
// A copy of the newest version which is 1.
err = v1manifest.WriteManifestFile(fname, m)
if err != nil {
return err
}
case v1manifest.ManifestTypeComponent, v1manifest.ManifestTypeIndex:
err := v1manifest.WriteManifestFile(FnameWithVersion(fname, m.Signed.Base().Version), m)
if err != nil {
return err
}
default:
err = v1manifest.WriteManifestFile(fname, m)
if err != nil {
return err
}
}
}
return install.WriteLocalInstallScript(filepath.Join(targetDir, "local_install.sh"))
}
func cloneComponents(repo *V1Repository,
components, selectedVersions []string,
targetDir, tmpDir string,
options CloneOptions) (map[string]*v1manifest.Component, error) {
compManifests := map[string]*v1manifest.Component{}
jobs := options.Jobs
if jobs <= 0 {
jobs = defaultJobs
}
errG := &errgroup.Group{}
tickets := make(chan struct{}, jobs)
defer func() { close(tickets) }()
for _, name := range components {
manifest, err := repo.GetComponentManifest(name, true)
if err != nil {
return nil, errors.Annotatef(err, "fetch component '%s' manifest failed", name)
}
vs, err := combineVersions(options.Components[name], manifest, options.OSs, options.Archs, selectedVersions)
if err != nil {
return nil, err
}
var newManifest *v1manifest.Component
if options.Full {
newManifest = manifest
} else {
if len(vs) < 1 {
continue
}
newManifest = &v1manifest.Component{
SignedBase: manifest.SignedBase,
ID: manifest.ID,
Description: manifest.Description,
Platforms: map[string]map[string]v1manifest.VersionItem{},
}
// Include the nightly reference version
if vs.Exist(utils.NightlyVersionAlias) {
newManifest.Nightly = manifest.Nightly
vs.Insert(manifest.Nightly)
}
}
platforms := []string{}
for _, goos := range options.OSs {
for _, goarch := range options.Archs {
platforms = append(platforms, PlatformString(goos, goarch))
}
}
if len(platforms) > 0 {
platforms = append(platforms, v1manifest.AnyPlatform)
}
for _, platform := range platforms {
for v, versionItem := range manifest.Platforms[platform] {
if !options.Full {
newVersions := newManifest.Platforms[platform]
if newVersions == nil {
newVersions = map[string]v1manifest.VersionItem{}
newManifest.Platforms[platform] = newVersions
}
newVersions[v] = versionItem
if !checkVersion(options, vs, v) {
versionItem.Yanked = true
newVersions[v] = versionItem
continue
}
}
if _, err := repo.GetComponentManifest(name, false); err != nil || versionItem.Yanked {
// The component or the version is yanked, skip download binary
continue
}
name, versionItem := name, versionItem
tickets <- struct{}{}
errG.Go(func() error {
defer func() { <-tickets }()
err := download(targetDir, tmpDir, repo, &versionItem)
if err != nil {
return errors.Annotatef(err, "download resource: %s", name)
}
return nil
})
}
}
compManifests[name] = newManifest
}
if err := errG.Wait(); err != nil {
return nil, err
}
// Download TiUP binary
for _, goos := range options.OSs {
for _, goarch := range options.Archs {
url := fmt.Sprintf("/tiup-%s-%s.tar.gz", goos, goarch)
dstFile := filepath.Join(targetDir, url)
tmpFile := filepath.Join(tmpDir, url)
if err := repo.Mirror().Download(url, tmpDir); err != nil {
if errors.Cause(err) == ErrNotFound {
fmt.Printf("TiUP doesn't have %s/%s, skipped\n", goos, goarch)
continue
}
return nil, err
}
// Move file to target directory if hashes pass verify.
if err := os.Rename(tmpFile, dstFile); err != nil {
return nil, err
}
}
}
return compManifests, nil
}
func download(targetDir, tmpDir string, repo *V1Repository, item *v1manifest.VersionItem) error {
validate := func(dir string) error {
hashes, n, err := ru.HashFile(path.Join(dir, item.URL))
if err != nil {
return err
}
if uint(n) != item.Length {
return errors.Errorf("file length mismatch, expected: %d, got: %v", item.Length, n)
}
for algo, hash := range item.Hashes {
h, found := hashes[algo]
if !found {
continue
}
if h != hash {
return errors.Errorf("file %s hash mismatch, expected: %s, got: %s", algo, hash, h)
}
}
return nil
}
dstFile := filepath.Join(targetDir, item.URL)
tmpFile := filepath.Join(tmpDir, item.URL)
// Skip installed file if exists file valid
if utils.IsExist(dstFile) {
if err := validate(targetDir); err == nil {
fmt.Println("Skipping existing file:", filepath.Join(targetDir, item.URL))
return nil
}
}
err := repo.Mirror().Download(item.URL, tmpDir)
if err != nil {
return err
}
if err := validate(tmpDir); err != nil {
return err
}
// Move file to target directory if hashes pass verify.
return os.Rename(tmpFile, dstFile)
}
func checkVersion(options CloneOptions, versions set.StringSet, version string) bool {
if options.Full || versions.Exist("all") || versions.Exist(version) {
return true
}
// prefix match
for v := range versions {
if options.Prefix && strings.HasPrefix(version, v) {
return true
} else if version == v {
return true
}
}
return false
}
func combineVersions(componentVersions *[]string,
manifest *v1manifest.Component, oss, archs,
globalVersions []string) (set.StringSet, error) {
result := set.NewStringSet()
for _, os := range oss {
for _, arch := range archs {
platform := PlatformString(os, arch)
versionList := manifest.VersionList(platform)
// set specified version with latest tag
if result.Exist(utils.LatestVersionAlias) {
latest := manifest.LatestVersion(platform)
if latest != "" {
result.Insert(latest)
}
}
if componentVersions != nil && len(*componentVersions) > 0 {
for _, selectedVersion := range *componentVersions {
fmt.Printf("%s %s/%s selected version is %s\n", manifest.ID, os, arch, selectedVersion)
if selectedVersion == utils.NightlyVersionAlias {
selectedVersion = manifest.Nightly
}
if selectedVersion == utils.LatestVersionAlias {
latest := manifest.LatestVersion(platform)
if latest != "" {
fmt.Printf("%s %s/%s found the lastest version %s\n", manifest.ID, os, arch, latest)
// set latest version
selectedVersion = latest
}
}
_, found := versionList[selectedVersion]
if !found {
return nil, errors.Errorf("version %s not found in %s %s/%s", selectedVersion, manifest.ID, os, arch)
}
result.Insert(selectedVersion)
}
} else {
for _, selectedVersion := range globalVersions {
if selectedVersion == utils.NightlyVersionAlias {
selectedVersion = manifest.Nightly
}
if selectedVersion == utils.LatestVersionAlias {
latest := manifest.LatestVersion(platform)
if latest == "" {
continue
}
fmt.Printf("%s %s/%s found the lastest version %s\n", manifest.ID, os, arch, latest)
// set latest version
selectedVersion = latest
}
_, found := versionList[selectedVersion]
// Some TiUP components won't be bound version with TiDB, if cannot find
// selected version we download the latest version to as a alternative
if !found {
// Use the latest stable versionS if the selected version doesn't exist in specific platform
latest := manifest.LatestVersion(platform)
if latest == "" {
continue
}
if selectedVersion != utils.LatestVersionAlias {
fmt.Printf("%s %s/%s %s not found, using %s instead.\n", manifest.ID, os, arch, selectedVersion, latest)
}
selectedVersion = latest
}
result.Insert(selectedVersion)
}
}
}
}
return result, nil
}