mirror of https://github.com/go-gitea/gitea
Move code indexer related code to a new package (#9191)
* move code indexer related code to a new package * fix lint * fix tests * fix fmt * GetMaxID support interface parameterpull/8816/head^2
Lunny Xiao
5 years ago
committed by
techknowlogick
parent
baf089e5b9
commit
be06dee04c
@ -0,0 +1,365 @@ |
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package code |
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import ( |
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"fmt" |
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"strconv" |
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"strings" |
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"time" |
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"code.gitea.io/gitea/models" |
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"code.gitea.io/gitea/modules/base" |
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"code.gitea.io/gitea/modules/charset" |
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"code.gitea.io/gitea/modules/git" |
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"code.gitea.io/gitea/modules/graceful" |
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"code.gitea.io/gitea/modules/indexer" |
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"code.gitea.io/gitea/modules/log" |
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"code.gitea.io/gitea/modules/setting" |
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"github.com/ethantkoenig/rupture" |
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) |
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type repoIndexerOperation struct { |
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repoID int64 |
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deleted bool |
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watchers []chan<- error |
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} |
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var repoIndexerOperationQueue chan repoIndexerOperation |
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// InitRepoIndexer initialize the repo indexer
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func InitRepoIndexer() { |
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if !setting.Indexer.RepoIndexerEnabled { |
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return |
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} |
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waitChannel := make(chan time.Duration) |
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repoIndexerOperationQueue = make(chan repoIndexerOperation, setting.Indexer.UpdateQueueLength) |
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go func() { |
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start := time.Now() |
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log.Info("Initializing Repository Indexer") |
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indexer.InitRepoIndexer(populateRepoIndexerAsynchronously) |
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go processRepoIndexerOperationQueue() |
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waitChannel <- time.Since(start) |
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}() |
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if setting.Indexer.StartupTimeout > 0 { |
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go func() { |
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timeout := setting.Indexer.StartupTimeout |
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if graceful.Manager.IsChild() && setting.GracefulHammerTime > 0 { |
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timeout += setting.GracefulHammerTime |
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} |
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select { |
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case duration := <-waitChannel: |
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log.Info("Repository Indexer Initialization took %v", duration) |
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case <-time.After(timeout): |
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log.Fatal("Repository Indexer Initialization Timed-Out after: %v", timeout) |
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} |
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}() |
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} |
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} |
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// populateRepoIndexerAsynchronously asynchronously populates the repo indexer
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// with pre-existing data. This should only be run when the indexer is created
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// for the first time.
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func populateRepoIndexerAsynchronously() error { |
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exist, err := models.IsTableNotEmpty("repository") |
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if err != nil { |
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return err |
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} else if !exist { |
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return nil |
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} |
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// if there is any existing repo indexer metadata in the DB, delete it
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// since we are starting afresh. Also, xorm requires deletes to have a
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// condition, and we want to delete everything, thus 1=1.
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if err := models.DeleteAllRecords("repo_indexer_status"); err != nil { |
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return err |
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} |
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var maxRepoID int64 |
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if maxRepoID, err = models.GetMaxID("repository"); err != nil { |
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return err |
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} |
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go populateRepoIndexer(maxRepoID) |
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return nil |
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} |
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// populateRepoIndexer populate the repo indexer with pre-existing data. This
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// should only be run when the indexer is created for the first time.
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func populateRepoIndexer(maxRepoID int64) { |
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log.Info("Populating the repo indexer with existing repositories") |
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// start with the maximum existing repo ID and work backwards, so that we
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// don't include repos that are created after gitea starts; such repos will
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// already be added to the indexer, and we don't need to add them again.
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for maxRepoID > 0 { |
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repos := make([]*models.Repository, 0, models.RepositoryListDefaultPageSize) |
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err := models.FindByMaxID(maxRepoID, models.RepositoryListDefaultPageSize, &repos) |
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if err != nil { |
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log.Error("populateRepoIndexer: %v", err) |
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return |
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} else if len(repos) == 0 { |
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break |
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} |
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for _, repo := range repos { |
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repoIndexerOperationQueue <- repoIndexerOperation{ |
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repoID: repo.ID, |
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deleted: false, |
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} |
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maxRepoID = repo.ID - 1 |
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} |
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} |
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log.Info("Done populating the repo indexer with existing repositories") |
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} |
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func updateRepoIndexer(repoID int64) error { |
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repo, err := models.GetRepositoryByID(repoID) |
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if err != nil { |
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return err |
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} |
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sha, err := getDefaultBranchSha(repo) |
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if err != nil { |
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return err |
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} |
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changes, err := getRepoChanges(repo, sha) |
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if err != nil { |
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return err |
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} else if changes == nil { |
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return nil |
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} |
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batch := indexer.RepoIndexerBatch() |
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for _, update := range changes.Updates { |
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if err := addUpdate(update, repo, batch); err != nil { |
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return err |
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} |
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} |
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for _, filename := range changes.RemovedFilenames { |
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if err := addDelete(filename, repo, batch); err != nil { |
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return err |
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} |
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} |
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if err = batch.Flush(); err != nil { |
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return err |
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} |
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return repo.UpdateIndexerStatus(sha) |
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} |
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// repoChanges changes (file additions/updates/removals) to a repo
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type repoChanges struct { |
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Updates []fileUpdate |
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RemovedFilenames []string |
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} |
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type fileUpdate struct { |
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Filename string |
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BlobSha string |
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} |
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func getDefaultBranchSha(repo *models.Repository) (string, error) { |
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stdout, err := git.NewCommand("show-ref", "-s", repo.DefaultBranch).RunInDir(repo.RepoPath()) |
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if err != nil { |
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return "", err |
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} |
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return strings.TrimSpace(stdout), nil |
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} |
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// getRepoChanges returns changes to repo since last indexer update
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func getRepoChanges(repo *models.Repository, revision string) (*repoChanges, error) { |
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if err := repo.GetIndexerStatus(); err != nil { |
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return nil, err |
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} |
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if len(repo.IndexerStatus.CommitSha) == 0 { |
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return genesisChanges(repo, revision) |
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} |
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return nonGenesisChanges(repo, revision) |
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} |
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func addUpdate(update fileUpdate, repo *models.Repository, batch rupture.FlushingBatch) error { |
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stdout, err := git.NewCommand("cat-file", "-s", update.BlobSha). |
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RunInDir(repo.RepoPath()) |
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if err != nil { |
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return err |
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} |
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if size, err := strconv.Atoi(strings.TrimSpace(stdout)); err != nil { |
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return fmt.Errorf("Misformatted git cat-file output: %v", err) |
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} else if int64(size) > setting.Indexer.MaxIndexerFileSize { |
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return addDelete(update.Filename, repo, batch) |
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} |
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fileContents, err := git.NewCommand("cat-file", "blob", update.BlobSha). |
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RunInDirBytes(repo.RepoPath()) |
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if err != nil { |
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return err |
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} else if !base.IsTextFile(fileContents) { |
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// FIXME: UTF-16 files will probably fail here
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return nil |
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} |
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indexerUpdate := indexer.RepoIndexerUpdate{ |
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Filepath: update.Filename, |
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Op: indexer.RepoIndexerOpUpdate, |
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Data: &indexer.RepoIndexerData{ |
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RepoID: repo.ID, |
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Content: string(charset.ToUTF8DropErrors(fileContents)), |
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}, |
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} |
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return indexerUpdate.AddToFlushingBatch(batch) |
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} |
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func addDelete(filename string, repo *models.Repository, batch rupture.FlushingBatch) error { |
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indexerUpdate := indexer.RepoIndexerUpdate{ |
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Filepath: filename, |
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Op: indexer.RepoIndexerOpDelete, |
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Data: &indexer.RepoIndexerData{ |
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RepoID: repo.ID, |
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}, |
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} |
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return indexerUpdate.AddToFlushingBatch(batch) |
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} |
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func isIndexable(entry *git.TreeEntry) bool { |
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if !entry.IsRegular() && !entry.IsExecutable() { |
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return false |
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} |
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name := strings.ToLower(entry.Name()) |
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for _, g := range setting.Indexer.ExcludePatterns { |
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if g.Match(name) { |
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return false |
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} |
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} |
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for _, g := range setting.Indexer.IncludePatterns { |
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if g.Match(name) { |
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return true |
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} |
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} |
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return len(setting.Indexer.IncludePatterns) == 0 |
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} |
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// parseGitLsTreeOutput parses the output of a `git ls-tree -r --full-name` command
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func parseGitLsTreeOutput(stdout []byte) ([]fileUpdate, error) { |
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entries, err := git.ParseTreeEntries(stdout) |
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if err != nil { |
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return nil, err |
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} |
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var idxCount = 0 |
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updates := make([]fileUpdate, len(entries)) |
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for _, entry := range entries { |
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if isIndexable(entry) { |
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updates[idxCount] = fileUpdate{ |
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Filename: entry.Name(), |
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BlobSha: entry.ID.String(), |
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} |
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idxCount++ |
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} |
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} |
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return updates[:idxCount], nil |
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} |
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// genesisChanges get changes to add repo to the indexer for the first time
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func genesisChanges(repo *models.Repository, revision string) (*repoChanges, error) { |
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var changes repoChanges |
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stdout, err := git.NewCommand("ls-tree", "--full-tree", "-r", revision). |
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RunInDirBytes(repo.RepoPath()) |
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if err != nil { |
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return nil, err |
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} |
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changes.Updates, err = parseGitLsTreeOutput(stdout) |
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return &changes, err |
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} |
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// nonGenesisChanges get changes since the previous indexer update
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func nonGenesisChanges(repo *models.Repository, revision string) (*repoChanges, error) { |
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diffCmd := git.NewCommand("diff", "--name-status", |
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repo.IndexerStatus.CommitSha, revision) |
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stdout, err := diffCmd.RunInDir(repo.RepoPath()) |
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if err != nil { |
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// previous commit sha may have been removed by a force push, so
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// try rebuilding from scratch
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log.Warn("git diff: %v", err) |
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if err = indexer.DeleteRepoFromIndexer(repo.ID); err != nil { |
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return nil, err |
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} |
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return genesisChanges(repo, revision) |
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} |
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var changes repoChanges |
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updatedFilenames := make([]string, 0, 10) |
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for _, line := range strings.Split(stdout, "\n") { |
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line = strings.TrimSpace(line) |
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if len(line) == 0 { |
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continue |
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} |
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filename := strings.TrimSpace(line[1:]) |
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if len(filename) == 0 { |
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continue |
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} else if filename[0] == '"' { |
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filename, err = strconv.Unquote(filename) |
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if err != nil { |
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return nil, err |
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} |
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} |
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switch status := line[0]; status { |
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case 'M', 'A': |
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updatedFilenames = append(updatedFilenames, filename) |
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case 'D': |
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changes.RemovedFilenames = append(changes.RemovedFilenames, filename) |
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default: |
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log.Warn("Unrecognized status: %c (line=%s)", status, line) |
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} |
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} |
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cmd := git.NewCommand("ls-tree", "--full-tree", revision, "--") |
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cmd.AddArguments(updatedFilenames...) |
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lsTreeStdout, err := cmd.RunInDirBytes(repo.RepoPath()) |
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if err != nil { |
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return nil, err |
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} |
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changes.Updates, err = parseGitLsTreeOutput(lsTreeStdout) |
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return &changes, err |
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} |
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func processRepoIndexerOperationQueue() { |
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for { |
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op := <-repoIndexerOperationQueue |
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var err error |
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if op.deleted { |
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if err = indexer.DeleteRepoFromIndexer(op.repoID); err != nil { |
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log.Error("DeleteRepoFromIndexer: %v", err) |
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} |
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} else { |
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if err = updateRepoIndexer(op.repoID); err != nil { |
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log.Error("updateRepoIndexer: %v", err) |
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} |
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} |
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for _, watcher := range op.watchers { |
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watcher <- err |
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} |
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} |
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} |
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// DeleteRepoFromIndexer remove all of a repository's entries from the indexer
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func DeleteRepoFromIndexer(repo *models.Repository, watchers ...chan<- error) { |
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addOperationToQueue(repoIndexerOperation{repoID: repo.ID, deleted: true, watchers: watchers}) |
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} |
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// UpdateRepoIndexer update a repository's entries in the indexer
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func UpdateRepoIndexer(repo *models.Repository, watchers ...chan<- error) { |
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addOperationToQueue(repoIndexerOperation{repoID: repo.ID, deleted: false, watchers: watchers}) |
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} |
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func addOperationToQueue(op repoIndexerOperation) { |
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if !setting.Indexer.RepoIndexerEnabled { |
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return |
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} |
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select { |
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case repoIndexerOperationQueue <- op: |
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break |
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default: |
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go func() { |
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repoIndexerOperationQueue <- op |
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}() |
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} |
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} |
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@ -0,0 +1,16 @@ |
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// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package code |
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import ( |
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"path/filepath" |
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"testing" |
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"code.gitea.io/gitea/models" |
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) |
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func TestMain(m *testing.M) { |
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models.MainTest(m, filepath.Join("..", "..", "..")) |
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} |
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