mirror of
https://github.com/go-gitea/gitea
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Fix #24662. Replace #24822 and #25708 (although it has been merged) ## Background In the past, Gitea supported issue searching with a keyword and conditions in a less efficient way. It worked by searching for issues with the keyword and obtaining limited IDs (as it is heavy to get all) on the indexer (bleve/elasticsearch/meilisearch), and then querying with conditions on the database to find a subset of the found IDs. This is why the results could be incomplete. To solve this issue, we need to store all fields that could be used as conditions in the indexer and support both keyword and additional conditions when searching with the indexer. ## Major changes - Redefine `IndexerData` to include all fields that could be used as filter conditions. - Refactor `Search(ctx context.Context, kw string, repoIDs []int64, limit, start int, state string)` to `Search(ctx context.Context, options *SearchOptions)`, so it supports more conditions now. - Change the data type stored in `issueIndexerQueue`. Use `IndexerMetadata` instead of `IndexerData` in case the data has been updated while it is in the queue. This also reduces the storage size of the queue. - Enhance searching with Bleve/Elasticsearch/Meilisearch, make them fully support `SearchOptions`. Also, update the data versions. - Keep most logic of database indexer, but remove `issues.SearchIssueIDsByKeyword` in `models` to avoid confusion where is the entry point to search issues. - Start a Meilisearch instance to test it in unit tests. - Add unit tests with almost full coverage to test Bleve/Elasticsearch/Meilisearch indexer. --------- Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
312 lines
11 KiB
Go
312 lines
11 KiB
Go
// Copyright 2018 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package issues
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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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"sync/atomic"
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"time"
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db_model "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/indexer/issues/bleve"
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"code.gitea.io/gitea/modules/indexer/issues/db"
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"code.gitea.io/gitea/modules/indexer/issues/elasticsearch"
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"code.gitea.io/gitea/modules/indexer/issues/internal"
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"code.gitea.io/gitea/modules/indexer/issues/meilisearch"
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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/util"
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)
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// IndexerMetadata is used to send data to the queue, so it contains only the ids.
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// It may look weired, because it has to be compatible with the old queue data format.
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// If the IsDelete flag is true, the IDs specify the issues to delete from the index without querying the database.
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// If the IsDelete flag is false, the ID specify the issue to index, so Indexer will query the database to get the issue data.
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// It should be noted that if the id is not existing in the database, it's index will be deleted too even if IsDelete is false.
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// Valid values:
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// - IsDelete = true, IDs = [1, 2, 3], and ID will be ignored
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// - IsDelete = false, ID = 1, and IDs will be ignored
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type IndexerMetadata struct {
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ID int64 `json:"id"`
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IsDelete bool `json:"is_delete"`
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IDs []int64 `json:"ids"`
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}
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var (
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// issueIndexerQueue queue of issue ids to be updated
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issueIndexerQueue *queue.WorkerPoolQueue[*IndexerMetadata]
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// globalIndexer is the global indexer, it cannot be nil.
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// When the real indexer is not ready, it will be a dummy indexer which will return error to explain it's not ready.
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// So it's always safe use it as *globalIndexer.Load() and call its methods.
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globalIndexer atomic.Pointer[internal.Indexer]
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dummyIndexer *internal.Indexer
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)
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func init() {
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i := internal.NewDummyIndexer()
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dummyIndexer = &i
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globalIndexer.Store(dummyIndexer)
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}
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// InitIssueIndexer initialize issue indexer, syncReindex is true then reindex until
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// all issue index done.
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func InitIssueIndexer(syncReindex bool) {
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ctx, _, finished := process.GetManager().AddTypedContext(context.Background(), "Service: IssueIndexer", process.SystemProcessType, false)
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indexerInitWaitChannel := make(chan time.Duration, 1)
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// Create the Queue
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issueIndexerQueue = queue.CreateUniqueQueue(ctx, "issue_indexer", getIssueIndexerQueueHandler(ctx))
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graceful.GetManager().RunAtTerminate(finished)
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// Create the Indexer
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go func() {
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pprof.SetGoroutineLabels(ctx)
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start := time.Now()
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log.Info("PID %d: Initializing Issue Indexer: %s", os.Getpid(), setting.Indexer.IssueType)
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var (
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issueIndexer internal.Indexer
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existed bool
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err error
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)
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switch setting.Indexer.IssueType {
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case "bleve":
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defer func() {
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if err := recover(); err != nil {
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log.Error("PANIC whilst initializing issue 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 %q directory to make Gitea recreate the indexes", setting.Indexer.IssuePath)
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globalIndexer.Store(dummyIndexer)
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log.Fatal("PID: %d Unable to initialize the Bleve Issue Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.IssuePath, err)
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}
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}()
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issueIndexer = bleve.NewIndexer(setting.Indexer.IssuePath)
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existed, err = issueIndexer.Init(ctx)
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if err != nil {
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log.Fatal("Unable to initialize Bleve Issue Indexer at path: %s Error: %v", setting.Indexer.IssuePath, err)
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}
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case "elasticsearch":
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issueIndexer = elasticsearch.NewIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueIndexerName)
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existed, err = issueIndexer.Init(ctx)
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if err != nil {
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log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
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}
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case "db":
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issueIndexer = db.NewIndexer()
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case "meilisearch":
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issueIndexer = meilisearch.NewIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueConnAuth, setting.Indexer.IssueIndexerName)
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existed, err = issueIndexer.Init(ctx)
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if err != nil {
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log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
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}
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default:
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log.Fatal("Unknown issue indexer type: %s", setting.Indexer.IssueType)
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}
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globalIndexer.Store(&issueIndexer)
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graceful.GetManager().RunAtTerminate(func() {
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log.Debug("Closing issue indexer")
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(*globalIndexer.Load()).Close()
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log.Info("PID: %d Issue Indexer closed", os.Getpid())
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})
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// Start processing the queue
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go graceful.GetManager().RunWithCancel(issueIndexerQueue)
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// Populate the index
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if !existed {
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if syncReindex {
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graceful.GetManager().RunWithShutdownContext(populateIssueIndexer)
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} else {
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go graceful.GetManager().RunWithShutdownContext(populateIssueIndexer)
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}
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}
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indexerInitWaitChannel <- time.Since(start)
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close(indexerInitWaitChannel)
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}()
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if syncReindex {
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select {
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case <-indexerInitWaitChannel:
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case <-graceful.GetManager().IsShutdown():
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}
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} else 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 duration := <-indexerInitWaitChannel:
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log.Info("Issue Indexer Initialization took %v", duration)
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case <-graceful.GetManager().IsShutdown():
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log.Warn("Shutdown occurred before issue index initialisation was complete")
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case <-time.After(timeout):
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issueIndexerQueue.ShutdownWait(5 * time.Second)
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log.Fatal("Issue 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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func getIssueIndexerQueueHandler(ctx context.Context) func(items ...*IndexerMetadata) []*IndexerMetadata {
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return func(items ...*IndexerMetadata) []*IndexerMetadata {
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var unhandled []*IndexerMetadata
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indexer := *globalIndexer.Load()
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for _, item := range items {
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log.Trace("IndexerMetadata Process: %d %v %t", item.ID, item.IDs, item.IsDelete)
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if item.IsDelete {
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if err := indexer.Delete(ctx, item.IDs...); err != nil {
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log.Error("Issue indexer handler: failed to from index: %v Error: %v", item.IDs, err)
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unhandled = append(unhandled, item)
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}
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continue
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}
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data, existed, err := getIssueIndexerData(ctx, item.ID)
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if err != nil {
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log.Error("Issue indexer handler: failed to get issue data of %d: %v", item.ID, err)
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unhandled = append(unhandled, item)
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continue
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}
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if !existed {
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if err := indexer.Delete(ctx, item.ID); err != nil {
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log.Error("Issue indexer handler: failed to delete issue %d from index: %v", item.ID, err)
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unhandled = append(unhandled, item)
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}
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continue
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}
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if err := indexer.Index(ctx, data); err != nil {
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log.Error("Issue indexer handler: failed to index issue %d: %v", item.ID, err)
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unhandled = append(unhandled, item)
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continue
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}
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}
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return unhandled
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}
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}
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// populateIssueIndexer populate the issue indexer with issue data
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func populateIssueIndexer(ctx context.Context) {
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ctx, _, finished := process.GetManager().AddTypedContext(ctx, "Service: PopulateIssueIndexer", process.SystemProcessType, true)
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defer finished()
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for page := 1; ; page++ {
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select {
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case <-ctx.Done():
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log.Warn("Issue Indexer population shutdown before completion")
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return
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default:
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}
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repos, _, err := repo_model.SearchRepositoryByName(ctx, &repo_model.SearchRepoOptions{
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ListOptions: db_model.ListOptions{Page: page, PageSize: repo_model.RepositoryListDefaultPageSize},
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OrderBy: db_model.SearchOrderByID,
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Private: true,
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Collaborate: util.OptionalBoolFalse,
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})
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if err != nil {
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log.Error("SearchRepositoryByName: %v", err)
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continue
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}
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if len(repos) == 0 {
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log.Debug("Issue Indexer population complete")
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return
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}
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for _, repo := range repos {
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for {
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select {
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case <-ctx.Done():
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log.Info("Issue 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 := updateRepoIndexer(ctx, repo.ID); err != nil {
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log.Warn("Retry to populate issue indexer for repo %d: %v", repo.ID, err)
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continue
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}
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break
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}
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}
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}
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}
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// UpdateRepoIndexer add/update all issues of the repositories
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func UpdateRepoIndexer(ctx context.Context, repoID int64) {
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if err := updateRepoIndexer(ctx, repoID); err != nil {
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log.Error("Unable to push repo %d to issue indexer: %v", repoID, err)
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}
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}
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// UpdateIssueIndexer add/update an issue to the issue indexer
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func UpdateIssueIndexer(issueID int64) {
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if err := updateIssueIndexer(issueID); err != nil {
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log.Error("Unable to push issue %d to issue indexer: %v", issueID, err)
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}
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}
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// DeleteRepoIssueIndexer deletes repo's all issues indexes
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func DeleteRepoIssueIndexer(ctx context.Context, repoID int64) {
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if err := deleteRepoIssueIndexer(ctx, repoID); err != nil {
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log.Error("Unable to push deleted repo %d to issue indexer: %v", repoID, 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(ctx context.Context) bool {
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return (*globalIndexer.Load()).Ping(ctx) == nil
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}
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// SearchOptions indicates the options for searching issues
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type SearchOptions internal.SearchOptions
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const (
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SortByCreatedDesc = internal.SortByCreatedDesc
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SortByUpdatedDesc = internal.SortByUpdatedDesc
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SortByCommentsDesc = internal.SortByCommentsDesc
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SortByDeadlineDesc = internal.SortByDeadlineDesc
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SortByCreatedAsc = internal.SortByCreatedAsc
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SortByUpdatedAsc = internal.SortByUpdatedAsc
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SortByCommentsAsc = internal.SortByCommentsAsc
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SortByDeadlineAsc = internal.SortByDeadlineAsc
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)
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// SearchIssues search issues by options.
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// It returns issue ids and a bool value indicates if the result is imprecise.
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func SearchIssues(ctx context.Context, opts *SearchOptions) ([]int64, int64, error) {
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indexer := *globalIndexer.Load()
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if opts.Keyword == "" {
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// This is a conservative shortcut.
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// If the keyword is empty, db has better (at least not worse) performance to filter issues.
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// When the keyword is empty, it tends to listing rather than searching issues.
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// So if the user creates an issue and list issues immediately, the issue may not be listed because the indexer needs time to index the issue.
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// Even worse, the external indexer like elastic search may not be available for a while,
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// and the user may not be able to list issues completely until it is available again.
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indexer = db.NewIndexer()
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}
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result, err := indexer.Search(ctx, (*internal.SearchOptions)(opts))
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if err != nil {
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return nil, 0, err
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}
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ret := make([]int64, 0, len(result.Hits))
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for _, hit := range result.Hits {
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ret = append(ret, hit.ID)
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}
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return ret, result.Total, nil
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}
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