forked from forgejo/forgejo
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 lint
This commit is contained in:
Lunny Xiao
GitHub
parent
2f9564f993
commit
89b4e0477b
13 changed files with 670 additions and 659 deletions
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@ -9,182 +9,90 @@ import (
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"os"
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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/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/token/unicodenorm"
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"github.com/blevesearch/bleve/analysis/tokenizer/unicode"
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"github.com/blevesearch/bleve/index/upsidedown"
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"github.com/blevesearch/bleve/mapping"
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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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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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const unicodeNormalizeName = "unicodeNormalize"
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const maxBatchSize = 16
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// indexerID a bleve-compatible unique identifier for an integer id
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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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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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// FIXME: graceful: This should use a persistable queue
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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("PID: %d: Initializing Repository Indexer", os.Getpid())
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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.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 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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// numericEqualityQuery a numeric equality query for the given value and field
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func numericEqualityQuery(value int64, field string) *query.NumericRangeQuery {
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f := float64(value)
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tru := true
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q := bleve.NewNumericRangeInclusiveQuery(&f, &f, &tru, &tru)
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q.SetField(field)
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return q
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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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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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func addUnicodeNormalizeTokenFilter(m *mapping.IndexMappingImpl) error {
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return m.AddCustomTokenFilter(unicodeNormalizeName, map[string]interface{}{
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"type": unicodenorm.Name,
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"form": unicodenorm.NFC,
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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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// FIXME: graceful: This should use a persistable queue
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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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isShutdown := graceful.GetManager().IsShutdown()
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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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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 fmt.Errorf("UpdateRepoIndexer: Unable to GetRepositoryByID: %d, Error: %v", repoID, 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 fmt.Errorf("UpdateRepoIndexer: Unable to GetDefaultBranchSha for: %s/%s, Error: %v", repo.MustOwnerName(), repo.Name, 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 fmt.Errorf("UpdateRepoIndexer: Unable to GetRepoChanges for: %s/%s Sha: %s Error: %v", repo.MustOwnerName(), repo.Name, sha, err)
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} else if changes == nil {
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return nil
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}
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batch := 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 fmt.Errorf("UpdateRepoIndexer: Unable to addUpdate to: %s/%s Sha: %s, update: %s(%s) Error: %v", repo.MustOwnerName(), repo.Name, sha, update.Filename, update.BlobSha, 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 fmt.Errorf("UpdateRepoIndexer: Unable to addDelete to: %s/%s Sha: %s, filename: %s Error: %v", repo.MustOwnerName(), repo.Name, sha, filename, err)
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}
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}
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if err = batch.Flush(); err != nil {
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return fmt.Errorf("UpdateRepoIndexer: Unable to flush batch to indexer for repo: %s/%s Error: %v", repo.MustOwnerName(), repo.Name, 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", 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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// openIndexer open the index at the specified path, checking for metadata
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// updates and bleve version updates. If index needs to be created (or
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// re-created), returns (nil, nil)
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func openIndexer(path string, latestVersion int) (bleve.Index, error) {
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_, err := os.Stat(path)
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if err != nil && os.IsNotExist(err) {
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return nil, nil
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} else if 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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metadata, err := rupture.ReadIndexMetadata(path)
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if err != nil {
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return nil, err
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}
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return nonGenesisChanges(repo, revision)
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if metadata.Version < latestVersion {
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// the indexer is using a previous version, so we should delete it and
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// re-populate
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return nil, os.RemoveAll(path)
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}
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index, err := bleve.Open(path)
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if err != nil && err == upsidedown.IncompatibleVersion {
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// the indexer was built with a previous version of bleve, so we should
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// delete it and re-populate
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return nil, os.RemoveAll(path)
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} else if err != nil {
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return nil, err
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}
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return index, nil
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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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func addUpdate(update fileUpdate, repo *models.Repository, batch rupture.FlushingBatch) error {
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@ -207,174 +115,231 @@ func addUpdate(update fileUpdate, repo *models.Repository, batch rupture.Flushin
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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 := RepoIndexerUpdate{
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Filepath: update.Filename,
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Op: RepoIndexerOpUpdate,
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Data: &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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id := filenameIndexerID(repo.ID, update.Filename)
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return batch.Index(id, &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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func addDelete(filename string, repo *models.Repository, batch rupture.FlushingBatch) error {
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indexerUpdate := RepoIndexerUpdate{
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Filepath: filename,
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Op: RepoIndexerOpDelete,
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Data: &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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id := filenameIndexerID(repo.ID, filename)
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return batch.Delete(id)
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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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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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// 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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// createRepoIndexer create a repo indexer if one does not already exist
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func createRepoIndexer(path string, latestVersion int) (bleve.Index, 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 nil, 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 nil, 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 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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if err = rupture.WriteIndexMetadata(path, &rupture.IndexMetadata{
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Version: latestVersion,
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}); 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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return indexer, nil
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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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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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var (
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_ Indexer = &BleveIndexer{}
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)
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// BleveIndexer represents a bleve indexer implementation
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type BleveIndexer struct {
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indexDir string
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indexer bleve.Index
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}
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// NewBleveIndexer creates a new bleve local indexer
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func NewBleveIndexer(indexDir string) (*BleveIndexer, bool, error) {
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indexer := &BleveIndexer{
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indexDir: indexDir,
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}
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created, err := indexer.init()
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return indexer, created, err
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}
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// init init the indexer
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func (b *BleveIndexer) init() (bool, error) {
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var err error
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b.indexer, err = openIndexer(b.indexDir, repoIndexerLatestVersion)
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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 = 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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return false, err
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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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if b.indexer != nil {
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return false, nil
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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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b.indexer, err = createRepoIndexer(b.indexDir, repoIndexerLatestVersion)
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if err != nil {
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return nil, err
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return false, 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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return true, nil
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}
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func processRepoIndexerOperationQueue() {
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for {
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select {
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case op := <-repoIndexerOperationQueue:
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var err error
|
||||
if op.deleted {
|
||||
if err = deleteRepoFromIndexer(op.repoID); err != nil {
|
||||
log.Error("DeleteRepoFromIndexer: %v", err)
|
||||
}
|
||||
} else {
|
||||
if err = updateRepoIndexer(op.repoID); err != nil {
|
||||
log.Error("updateRepoIndexer: %v", err)
|
||||
}
|
||||
}
|
||||
for _, watcher := range op.watchers {
|
||||
watcher <- err
|
||||
}
|
||||
case <-graceful.GetManager().IsShutdown():
|
||||
log.Info("PID: %d Repository indexer queue processing stopped", os.Getpid())
|
||||
return
|
||||
// Close close the indexer
|
||||
func (b *BleveIndexer) Close() {
|
||||
log.Debug("Closing repo indexer")
|
||||
if b.indexer != nil {
|
||||
err := b.indexer.Close()
|
||||
if err != nil {
|
||||
log.Error("Error whilst closing the repository indexer: %v", err)
|
||||
}
|
||||
}
|
||||
log.Info("PID: %d Repository Indexer closed", os.Getpid())
|
||||
}
|
||||
|
||||
// Index indexes the data
|
||||
func (b *BleveIndexer) Index(repoID int64) error {
|
||||
repo, err := models.GetRepositoryByID(repoID)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
sha, err := getDefaultBranchSha(repo)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
changes, err := getRepoChanges(repo, sha)
|
||||
if err != nil {
|
||||
return err
|
||||
} else if changes == nil {
|
||||
return nil
|
||||
}
|
||||
|
||||
batch := rupture.NewFlushingBatch(b.indexer, maxBatchSize)
|
||||
for _, update := range changes.Updates {
|
||||
if err := addUpdate(update, repo, batch); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
for _, filename := range changes.RemovedFilenames {
|
||||
if err := addDelete(filename, repo, batch); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
if err = batch.Flush(); err != nil {
|
||||
return err
|
||||
}
|
||||
return repo.UpdateIndexerStatus(sha)
|
||||
}
|
||||
|
||||
// Delete deletes indexes by ids
|
||||
func (b *BleveIndexer) Delete(repoID int64) error {
|
||||
query := numericEqualityQuery(repoID, "RepoID")
|
||||
searchRequest := bleve.NewSearchRequestOptions(query, 2147483647, 0, false)
|
||||
result, err := b.indexer.Search(searchRequest)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
batch := rupture.NewFlushingBatch(b.indexer, maxBatchSize)
|
||||
for _, hit := range result.Hits {
|
||||
if err = batch.Delete(hit.ID); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
return batch.Flush()
|
||||
}
|
||||
|
||||
// Search searches for files in the specified repo.
|
||||
// Returns the matching file-paths
|
||||
func (b *BleveIndexer) Search(repoIDs []int64, keyword string, page, pageSize int) (int64, []*SearchResult, 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
|
||||
}
|
||||
}
|
||||
|
||||
// DeleteRepoFromIndexer remove all of a repository's entries from the indexer
|
||||
func DeleteRepoFromIndexer(repo *models.Repository, watchers ...chan<- error) {
|
||||
addOperationToQueue(repoIndexerOperation{repoID: repo.ID, deleted: true, watchers: watchers})
|
||||
}
|
||||
from := (page - 1) * pageSize
|
||||
searchRequest := bleve.NewSearchRequestOptions(indexerQuery, pageSize, from, false)
|
||||
searchRequest.Fields = []string{"Content", "RepoID"}
|
||||
searchRequest.IncludeLocations = true
|
||||
|
||||
// UpdateRepoIndexer update a repository's entries in the indexer
|
||||
func UpdateRepoIndexer(repo *models.Repository, watchers ...chan<- error) {
|
||||
addOperationToQueue(repoIndexerOperation{repoID: repo.ID, deleted: false, watchers: watchers})
|
||||
}
|
||||
|
||||
func addOperationToQueue(op repoIndexerOperation) {
|
||||
if !setting.Indexer.RepoIndexerEnabled {
|
||||
return
|
||||
result, err := b.indexer.Search(searchRequest)
|
||||
if err != nil {
|
||||
return 0, nil, err
|
||||
}
|
||||
select {
|
||||
case repoIndexerOperationQueue <- op:
|
||||
break
|
||||
default:
|
||||
go func() {
|
||||
repoIndexerOperationQueue <- op
|
||||
}()
|
||||
|
||||
searchResults := make([]*SearchResult, 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] = &SearchResult{
|
||||
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…
Add table
Add a link
Reference in a new issue