mirror of
https://github.com/go-gitea/gitea
synced 2024-08-17 12:50:52 +02:00
Co-authored-by: KN4CK3R <admin@oldschoolhack.me> Co-authored-by: Lauris BH <lauris@nix.lv>
356 lines
9.9 KiB
Go
356 lines
9.9 KiB
Go
// Copyright 2016 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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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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"runtime/pprof"
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"strconv"
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"strings"
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"time"
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"code.gitea.io/gitea/models/db"
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repo_model "code.gitea.io/gitea/models/repo"
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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/process"
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"code.gitea.io/gitea/modules/queue"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/modules/timeutil"
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)
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// SearchResult result of performing a search in a repo
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type SearchResult struct {
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RepoID int64
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StartIndex int
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EndIndex int
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Filename string
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Content string
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CommitID string
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UpdatedUnix timeutil.TimeStamp
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Language string
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Color string
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}
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// SearchResultLanguages result of top languages count in search results
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type SearchResultLanguages struct {
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Language string
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Color string
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Count int
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}
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// Indexer defines an interface to index and search code contents
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type Indexer interface {
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Ping() bool
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SetAvailabilityChangeCallback(callback func(bool))
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Index(ctx context.Context, repo *repo_model.Repository, sha string, changes *repoChanges) error
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Delete(repoID int64) error
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Search(ctx context.Context, repoIDs []int64, language, keyword string, page, pageSize int, isMatch bool) (int64, []*SearchResult, []*SearchResultLanguages, error)
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Close()
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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 indexerID(id int64) string {
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return strconv.FormatInt(id, 36)
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}
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func parseIndexerID(indexerID string) (int64, 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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repoID, _ := strconv.ParseInt(indexerID[:index], 36, 64)
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return repoID, indexerID[index+1:]
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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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// IndexerData represents data stored in the code indexer
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type IndexerData struct {
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RepoID int64
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}
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var indexerQueue queue.UniqueQueue
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func index(ctx context.Context, indexer Indexer, repoID int64) error {
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repo, err := repo_model.GetRepositoryByID(ctx, repoID)
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if repo_model.IsErrRepoNotExist(err) {
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return indexer.Delete(repoID)
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}
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if err != nil {
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return err
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}
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sha, err := getDefaultBranchSha(ctx, 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(ctx, 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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if err := indexer.Index(ctx, repo, sha, changes); err != nil {
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return err
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}
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return repo_model.UpdateIndexerStatus(ctx, repo, repo_model.RepoIndexerTypeCode, sha)
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}
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// Init initialize the repo indexer
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func Init() {
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if !setting.Indexer.RepoIndexerEnabled {
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indexer.Close()
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return
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}
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ctx, cancel, finished := process.GetManager().AddTypedContext(context.Background(), "Service: CodeIndexer", process.SystemProcessType, false)
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graceful.GetManager().RunAtTerminate(func() {
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select {
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case <-ctx.Done():
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return
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default:
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}
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cancel()
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log.Debug("Closing repository indexer")
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indexer.Close()
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log.Info("PID: %d Repository Indexer closed", os.Getpid())
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finished()
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})
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waitChannel := make(chan time.Duration, 1)
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// Create the Queue
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switch setting.Indexer.RepoType {
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case "bleve", "elasticsearch":
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handler := func(data ...queue.Data) []queue.Data {
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idx, err := indexer.get()
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if idx == nil || err != nil {
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log.Error("Codes indexer handler: unable to get indexer!")
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return data
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}
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unhandled := make([]queue.Data, 0, len(data))
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for _, datum := range data {
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indexerData, ok := datum.(*IndexerData)
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if !ok {
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log.Error("Unable to process provided datum: %v - not possible to cast to IndexerData", datum)
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continue
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}
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log.Trace("IndexerData Process Repo: %d", indexerData.RepoID)
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if err := index(ctx, indexer, indexerData.RepoID); err != nil {
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log.Error("index: %v", err)
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if indexer.Ping() {
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continue
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}
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// Add back to queue
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unhandled = append(unhandled, datum)
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}
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}
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return unhandled
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}
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indexerQueue = queue.CreateUniqueQueue("code_indexer", handler, &IndexerData{})
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if indexerQueue == nil {
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log.Fatal("Unable to create codes indexer queue")
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}
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default:
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log.Fatal("Unknown codes indexer type; %s", setting.Indexer.RepoType)
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}
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go func() {
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pprof.SetGoroutineLabels(ctx)
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start := time.Now()
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var (
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rIndexer Indexer
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populate bool
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err error
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)
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switch setting.Indexer.RepoType {
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case "bleve":
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log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoPath)
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defer func() {
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if err := recover(); err != nil {
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log.Error("PANIC whilst initializing repository indexer: %v\nStacktrace: %s", err, log.Stack(2))
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log.Error("The indexer files are likely corrupted and may need to be deleted")
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log.Error("You can completely remove the \"%s\" directory to make Gitea recreate the indexes", setting.Indexer.RepoPath)
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}
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}()
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rIndexer, populate, err = NewBleveIndexer(setting.Indexer.RepoPath)
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if err != nil {
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cancel()
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indexer.Close()
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close(waitChannel)
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log.Fatal("PID: %d Unable to initialize the bleve Repository Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.RepoPath, err)
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}
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case "elasticsearch":
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log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoConnStr)
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defer func() {
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if err := recover(); err != nil {
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log.Error("PANIC whilst initializing repository indexer: %v\nStacktrace: %s", err, log.Stack(2))
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log.Error("The indexer files are likely corrupted and may need to be deleted")
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log.Error("You can completely remove the \"%s\" index to make Gitea recreate the indexes", setting.Indexer.RepoConnStr)
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}
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}()
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rIndexer, populate, err = NewElasticSearchIndexer(setting.Indexer.RepoConnStr, setting.Indexer.RepoIndexerName)
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if err != nil {
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cancel()
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indexer.Close()
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close(waitChannel)
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log.Fatal("PID: %d Unable to initialize the elasticsearch Repository Indexer connstr: %s Error: %v", os.Getpid(), setting.Indexer.RepoConnStr, err)
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}
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default:
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log.Fatal("PID: %d Unknown Indexer type: %s", os.Getpid(), setting.Indexer.RepoType)
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}
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indexer.set(rIndexer)
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if queue, ok := indexerQueue.(queue.Pausable); ok {
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rIndexer.SetAvailabilityChangeCallback(func(available bool) {
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if !available {
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log.Info("Code index queue paused")
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queue.Pause()
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} else {
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log.Info("Code index queue resumed")
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queue.Resume()
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}
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})
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}
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// Start processing the queue
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go graceful.GetManager().RunWithShutdownFns(indexerQueue.Run)
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if populate {
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go graceful.GetManager().RunWithShutdownContext(populateRepoIndexer)
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}
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select {
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case waitChannel <- time.Since(start):
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case <-graceful.GetManager().IsShutdown():
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}
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close(waitChannel)
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}()
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if setting.Indexer.StartupTimeout > 0 {
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go func() {
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pprof.SetGoroutineLabels(ctx)
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timeout := setting.Indexer.StartupTimeout
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if graceful.GetManager().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 <-graceful.GetManager().IsShutdown():
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log.Warn("Shutdown before Repository Indexer completed initialization")
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cancel()
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indexer.Close()
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case duration, ok := <-waitChannel:
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if !ok {
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log.Warn("Repository Indexer Initialization failed")
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cancel()
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indexer.Close()
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return
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}
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log.Info("Repository Indexer Initialization took %v", duration)
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case <-time.After(timeout):
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cancel()
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indexer.Close()
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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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// UpdateRepoIndexer update a repository's entries in the indexer
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func UpdateRepoIndexer(repo *repo_model.Repository) {
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indexData := &IndexerData{RepoID: repo.ID}
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if err := indexerQueue.Push(indexData); err != nil {
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log.Error("Update repo index data %v failed: %v", indexData, err)
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}
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}
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// IsAvailable checks if issue indexer is available
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func IsAvailable() bool {
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idx, err := indexer.get()
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if err != nil {
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log.Error("IsAvailable(): unable to get indexer: %v", err)
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return false
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}
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return idx.Ping()
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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(ctx context.Context) {
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log.Info("Populating the repo indexer with existing repositories")
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exist, err := db.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 := db.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 = db.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 <-ctx.Done():
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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 := repo_model.GetUnindexedRepos(repo_model.RepoIndexerTypeCode, 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 <-ctx.Done():
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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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if err := indexerQueue.Push(&IndexerData{RepoID: id}); err != nil {
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log.Error("indexerQueue.Push: %v", err)
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return
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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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