30181d459d
* Wrap the code indexer In order to prevent a data race in the code indexer it must be wrapped with a holder otherwise it is possible to Search/Index on an incompletely initialised indexer, and search will fail with a nil pointer until the repository indexer is initialised. Further a completely initialised repository indexer should not be closed until Termination otherwise actions in Hammer/Shutdown phases could block or be lost. Finally, there is a complex dance of shutdown etiquette should the index initialisation fail. This PR restores that. * Always return err if closed whilst waiting Co-authored-by: techknowlogick <matti@mdranta.net>
105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
// Copyright 2016 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package code
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import (
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"context"
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"os"
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"time"
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"code.gitea.io/gitea/modules/graceful"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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)
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// 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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}
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// Indexer defines an interface to indexer issues contents
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type Indexer interface {
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Index(repoID int64) error
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Delete(repoID int64) error
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Search(repoIDs []int64, keyword string, page, pageSize int) (int64, []*SearchResult, error)
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Close()
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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 := context.WithCancel(context.Background())
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graceful.GetManager().RunAtTerminate(ctx, func() {
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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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})
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waitChannel := make(chan time.Duration)
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go func() {
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start := time.Now()
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log.Info("PID: %d Initializing Repository Indexer at: %s", os.Getpid(), setting.Indexer.RepoPath)
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bleveIndexer, created, err := NewBleveIndexer(setting.Indexer.RepoPath)
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if err != nil {
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if bleveIndexer != nil {
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bleveIndexer.Close()
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}
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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 Repository Indexer at path: %s Error: %v", os.Getpid(), setting.Indexer.RepoPath, err)
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}
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indexer.set(bleveIndexer)
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go processRepoIndexerOperationQueue(indexer)
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if created {
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go 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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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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