Refactor code indexer (#9313)
* Refactor code indexer * fix test * fix test * refactor code indexer * fix import * improve code * fix typo * fix test and make code clean * fix lintlunny/display_deleted_branch2
Lunny Xiao
4 years ago
committed by
GitHub
parent
2f9564f993
commit
89b4e0477b
@ -0,0 +1,147 @@
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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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"strconv"
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"strings"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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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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// 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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func getDefaultBranchSha(repo *models.Repository) (string, error) {
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stdout, err := git.NewCommand("show-ref", "-s", git.BranchPrefix+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 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.Delete(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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@ -0,0 +1,133 @@
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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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"os"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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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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func processRepoIndexerOperationQueue(indexer Indexer) {
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defer indexer.Close()
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repoIndexerOperationQueue = make(chan repoIndexerOperation, setting.Indexer.UpdateQueueLength)
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for {
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select {
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case op := <-repoIndexerOperationQueue:
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var err error
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if op.deleted {
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if err = indexer.Delete(op.repoID); err != nil {
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log.Error("indexer.Delete: %v", err)
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}
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} else {
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if err = indexer.Index(op.repoID); err != nil {
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log.Error("indexer.Index: %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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case <-graceful.GetManager().IsShutdown():
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log.Info("PID: %d Repository indexer queue processing stopped", os.Getpid())
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return
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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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// 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() {
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log.Info("Populating the repo indexer with existing repositories")
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isShutdown := graceful.GetManager().IsShutdown()
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exist, err := models.IsTableNotEmpty("repository")
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if err != nil {
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log.Fatal("System error: %v", err)
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} else if !exist {
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return
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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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log.Fatal("System error: %v", 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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log.Fatal("System error: %v", err)
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}
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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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select {
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case <-isShutdown:
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log.Info("Repository Indexer population shutdown before completion")
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return
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default:
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}
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ids, err := models.GetUnindexedRepos(maxRepoID, 0, 50)
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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(ids) == 0 {
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break
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}
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for _, id := range ids {
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select {
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case <-isShutdown:
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log.Info("Repository Indexer population shutdown before completion")
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return
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default:
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}
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repoIndexerOperationQueue <- repoIndexerOperation{
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repoID: id,
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deleted: false,
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}
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maxRepoID = id - 1
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}
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}
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log.Info("Done (re)populating the repo indexer with existing repositories")
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}
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@ -1,290 +0,0 @@
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// Copyright 2017 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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"context"
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"os"
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"strings"
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"sync"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/graceful"
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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/blevesearch/bleve"
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"github.com/blevesearch/bleve/analysis/analyzer/custom"
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"github.com/blevesearch/bleve/analysis/token/lowercase"
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"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
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"github.com/blevesearch/bleve/search/query"
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"github.com/ethantkoenig/rupture"
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)
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const (
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repoIndexerAnalyzer = "repoIndexerAnalyzer"
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repoIndexerDocType = "repoIndexerDocType"
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repoIndexerLatestVersion = 4
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)
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type bleveIndexerHolder struct {
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index bleve.Index
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mutex sync.RWMutex
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cond *sync.Cond
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}
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func newBleveIndexerHolder() *bleveIndexerHolder {
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b := &bleveIndexerHolder{}
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b.cond = sync.NewCond(b.mutex.RLocker())
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return b
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}
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func (r *bleveIndexerHolder) set(index bleve.Index) {
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r.mutex.Lock()
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defer r.mutex.Unlock()
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r.index = index
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r.cond.Broadcast()
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}
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func (r *bleveIndexerHolder) get() bleve.Index {
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r.mutex.RLock()
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defer r.mutex.RUnlock()
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if r.index == nil {
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r.cond.Wait()
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}
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return r.index
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}
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// repoIndexer (thread-safe) index for repository contents
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var indexerHolder = newBleveIndexerHolder()
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// RepoIndexerOp type of operation to perform on repo indexer
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type RepoIndexerOp int
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const (
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// RepoIndexerOpUpdate add/update a file's contents
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RepoIndexerOpUpdate = iota
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// RepoIndexerOpDelete delete a file
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RepoIndexerOpDelete
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)
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// RepoIndexerData data stored in the repo indexer
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type RepoIndexerData struct {
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RepoID int64
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Content string
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}
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// Type returns the document type, for bleve's mapping.Classifier interface.
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func (d *RepoIndexerData) Type() string {
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return repoIndexerDocType
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}
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// RepoIndexerUpdate an update to the repo indexer
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type RepoIndexerUpdate struct {
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Filepath string
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Op RepoIndexerOp
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Data *RepoIndexerData
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}
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// AddToFlushingBatch adds the update to the given flushing batch.
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func (update RepoIndexerUpdate) AddToFlushingBatch(batch rupture.FlushingBatch) error {
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id := filenameIndexerID(update.Data.RepoID, update.Filepath)
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switch update.Op {
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case RepoIndexerOpUpdate:
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return batch.Index(id, update.Data)
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case RepoIndexerOpDelete:
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return batch.Delete(id)
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default:
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log.Error("Unrecognized repo indexer op: %d", update.Op)
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}
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return nil
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}
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// initRepoIndexer initialize repo indexer
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func initRepoIndexer(populateIndexer func() error) {
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indexer, err := openIndexer(setting.Indexer.RepoPath, repoIndexerLatestVersion)
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if err != nil {
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log.Fatal("InitRepoIndexer %s: %v", setting.Indexer.RepoPath, err)
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}
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if indexer != nil {
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indexerHolder.set(indexer)
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closeAtTerminate()
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// Continue population from where left off
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if err = populateIndexer(); err != nil {
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log.Fatal("PopulateRepoIndex: %v", err)
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}
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return
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}
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if err = createRepoIndexer(setting.Indexer.RepoPath, repoIndexerLatestVersion); err != nil {
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log.Fatal("CreateRepoIndexer: %v", err)
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}
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closeAtTerminate()
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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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log.Fatal("DeleteAllRepoIndexerStatus: %v", err)
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}
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if err = populateIndexer(); err != nil {
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log.Fatal("PopulateRepoIndex: %v", err)
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}
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}
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func closeAtTerminate() {
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graceful.GetManager().RunAtTerminate(context.Background(), func() {
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log.Debug("Closing repo indexer")
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indexer := indexerHolder.get()
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if indexer != nil {
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err := indexer.Close()
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if err != nil {
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log.Error("Error whilst closing the repository indexer: %v", err)
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}
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}
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log.Info("PID: %d Repository Indexer closed", os.Getpid())
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})
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}
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// createRepoIndexer create a repo indexer if one does not already exist
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func createRepoIndexer(path string, latestVersion int) error {
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docMapping := bleve.NewDocumentMapping()
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numericFieldMapping := bleve.NewNumericFieldMapping()
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numericFieldMapping.IncludeInAll = false
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docMapping.AddFieldMappingsAt("RepoID", numericFieldMapping)
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textFieldMapping := bleve.NewTextFieldMapping()
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textFieldMapping.IncludeInAll = false
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docMapping.AddFieldMappingsAt("Content", textFieldMapping)
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mapping := bleve.NewIndexMapping()
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if err := addUnicodeNormalizeTokenFilter(mapping); err != nil {
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return err
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} else if err := mapping.AddCustomAnalyzer(repoIndexerAnalyzer, map[string]interface{}{
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"type": custom.Name,
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"char_filters": []string{},
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"tokenizer": unicode.Name,
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"token_filters": []string{unicodeNormalizeName, lowercase.Name},
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}); err != nil {
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return err
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}
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mapping.DefaultAnalyzer = repoIndexerAnalyzer
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mapping.AddDocumentMapping(repoIndexerDocType, docMapping)
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mapping.AddDocumentMapping("_all", bleve.NewDocumentDisabledMapping())
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indexer, err := bleve.New(path, mapping)
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if err != nil {
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return err
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}
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indexerHolder.set(indexer)
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return rupture.WriteIndexMetadata(path, &rupture.IndexMetadata{
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Version: latestVersion,
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})
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}
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func filenameIndexerID(repoID int64, filename string) string {
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return indexerID(repoID) + "_" + filename
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}
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func filenameOfIndexerID(indexerID string) string {
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index := strings.IndexByte(indexerID, '_')
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if index == -1 {
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log.Error("Unexpected ID in repo indexer: %s", indexerID)
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}
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return indexerID[index+1:]
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}
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// RepoIndexerBatch batch to add updates to
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func RepoIndexerBatch() rupture.FlushingBatch {
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return rupture.NewFlushingBatch(indexerHolder.get(), maxBatchSize)
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}
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// deleteRepoFromIndexer delete all of a repo's files from indexer
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func deleteRepoFromIndexer(repoID int64) error {
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query := numericEqualityQuery(repoID, "RepoID")
|
||||
searchRequest := bleve.NewSearchRequestOptions(query, 2147483647, 0, false)
|
||||
result, err := indexerHolder.get().Search(searchRequest)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
batch := RepoIndexerBatch()
|
||||
for _, hit := range result.Hits {
|
||||
if err = batch.Delete(hit.ID); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return batch.Flush()
|
||||
}
|
||||
|
||||
// RepoSearchResult result of performing a search in a repo
|
||||
type RepoSearchResult struct {
|
||||
RepoID int64
|
||||
StartIndex int
|
||||
EndIndex int
|
||||
Filename string
|
||||
Content string
|
||||
}
|
||||
|
||||
// SearchRepoByKeyword searches for files in the specified repo.
|
||||
// Returns the matching file-paths
|
||||
func SearchRepoByKeyword(repoIDs []int64, keyword string, page, pageSize int) (int64, []*RepoSearchResult, error) {
|
||||
phraseQuery := bleve.NewMatchPhraseQuery(keyword)
|
||||
phraseQuery.FieldVal = "Content"
|
||||
phraseQuery.Analyzer = repoIndexerAnalyzer
|
||||
|
||||
var indexerQuery query.Query
|
||||
if len(repoIDs) > 0 {
|
||||
var repoQueries = make([]query.Query, 0, len(repoIDs))
|
||||
for _, repoID := range repoIDs {
|
||||
repoQueries = append(repoQueries, numericEqualityQuery(repoID, "RepoID"))
|
||||
}
|
||||
|
||||
indexerQuery = bleve.NewConjunctionQuery(
|
||||
bleve.NewDisjunctionQuery(repoQueries...),
|
||||
phraseQuery,
|
||||
)
|
||||
} else {
|
||||
indexerQuery = phraseQuery
|
||||
}
|
||||
|
||||
from := (page - 1) * pageSize
|
||||
searchRequest := bleve.NewSearchRequestOptions(indexerQuery, pageSize, from, false)
|
||||
searchRequest.Fields = []string{"Content", "RepoID"}
|
||||
searchRequest.IncludeLocations = true
|
||||
|
||||
result, err := indexerHolder.get().Search(searchRequest)
|
||||
if err != nil {
|
||||
return 0, nil, err
|
||||
}
|
||||
|
||||
searchResults := make([]*RepoSearchResult, len(result.Hits))
|
||||
for i, hit := range result.Hits {
|
||||
var startIndex, endIndex int = -1, -1
|
||||
for _, locations := range hit.Locations["Content"] {
|
||||
location := locations[0]
|
||||
locationStart := int(location.Start)
|
||||
locationEnd := int(location.End)
|
||||
if startIndex < 0 || locationStart < startIndex {
|
||||
startIndex = locationStart
|
||||
}
|
||||
if endIndex < 0 || locationEnd > endIndex {
|
||||
endIndex = locationEnd
|
||||
}
|
||||
}
|
||||
searchResults[i] = &RepoSearchResult{
|
||||
RepoID: int64(hit.Fields["RepoID"].(float64)),
|
||||
StartIndex: startIndex,
|
||||
EndIndex: endIndex,
|
||||
Filename: filenameOfIndexerID(hit.ID),
|
||||
Content: hit.Fields["Content"].(string),
|
||||
}
|
||||
}
|
||||
return int64(result.Total), searchResults, nil
|
||||
}
|
||||
Loading…
Reference in new issue