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Continues on from #19202. Following the addition of pprof labels we can now more easily understand the relationship between a goroutine and the requests that spawn them. This PR takes advantage of the labels and adds a few others, then provides a mechanism for the monitoring page to query the pprof goroutine profile. The binary profile that results from this profile is immediately piped in to the google library for parsing this and then stack traces are formed for the goroutines. If the goroutine is within a context or has been created from a goroutine within a process context it will acquire the process description labels for that process. The goroutines are mapped with there associate pids and any that do not have an associated pid are placed in a group at the bottom as unbound. In this way we should be able to more easily examine goroutines that have been stuck. A manager command `gitea manager processes` is also provided that can export the processes (with or without stacktraces) to the command line. Signed-off-by: Andrew Thornton <art27@cantab.net>
412 lines
11 KiB
Go
412 lines
11 KiB
Go
// Copyright 2018 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 issues
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import (
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"context"
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"fmt"
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"os"
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"runtime/pprof"
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"sync"
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"time"
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"code.gitea.io/gitea/models"
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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/util"
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)
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// IndexerData data stored in the issue indexer
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type IndexerData struct {
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ID int64 `json:"id"`
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RepoID int64 `json:"repo_id"`
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Title string `json:"title"`
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Content string `json:"content"`
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Comments []string `json:"comments"`
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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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// Match represents on search result
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type Match struct {
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ID int64 `json:"id"`
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Score float64 `json:"score"`
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}
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// SearchResult represents search results
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type SearchResult struct {
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Total int64
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Hits []Match
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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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Init() (bool, error)
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Ping() bool
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SetAvailabilityChangeCallback(callback func(bool))
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Index(issue []*IndexerData) error
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Delete(ids ...int64) error
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Search(ctx context.Context, kw string, repoIDs []int64, limit, start int) (*SearchResult, error)
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Close()
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}
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type indexerHolder struct {
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indexer Indexer
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mutex sync.RWMutex
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cond *sync.Cond
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cancelled bool
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}
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func newIndexerHolder() *indexerHolder {
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h := &indexerHolder{}
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h.cond = sync.NewCond(h.mutex.RLocker())
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return h
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}
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func (h *indexerHolder) cancel() {
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h.mutex.Lock()
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defer h.mutex.Unlock()
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h.cancelled = true
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h.cond.Broadcast()
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}
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func (h *indexerHolder) set(indexer Indexer) {
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h.mutex.Lock()
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defer h.mutex.Unlock()
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h.indexer = indexer
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h.cond.Broadcast()
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}
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func (h *indexerHolder) get() Indexer {
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h.mutex.RLock()
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defer h.mutex.RUnlock()
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if h.indexer == nil && !h.cancelled {
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h.cond.Wait()
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}
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return h.indexer
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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.Queue
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holder = newIndexerHolder()
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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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waitChannel := make(chan time.Duration)
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// Create the Queue
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switch setting.Indexer.IssueType {
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case "bleve", "elasticsearch":
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handler := func(data ...queue.Data) []queue.Data {
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indexer := holder.get()
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if indexer == nil {
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log.Error("Issue indexer handler: unable to get indexer!")
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return data
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}
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iData := make([]*IndexerData, 0, len(data))
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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: %d %v %t", indexerData.ID, indexerData.IDs, indexerData.IsDelete)
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if indexerData.IsDelete {
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if err := indexer.Delete(indexerData.IDs...); err != nil {
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log.Error("Error whilst deleting from index: %v Error: %v", indexerData.IDs, 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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continue
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}
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iData = append(iData, indexerData)
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}
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if len(unhandled) > 0 {
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for _, indexerData := range iData {
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unhandled = append(unhandled, indexerData)
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}
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return unhandled
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}
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if err := indexer.Index(iData); err != nil {
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log.Error("Error whilst indexing: %v Error: %v", iData, err)
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if indexer.Ping() {
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return nil
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}
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// Add back to queue
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for _, indexerData := range iData {
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unhandled = append(unhandled, indexerData)
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}
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return unhandled
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}
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return nil
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}
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issueIndexerQueue = queue.CreateQueue("issue_indexer", handler, &IndexerData{})
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if issueIndexerQueue == nil {
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log.Fatal("Unable to create issue indexer queue")
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}
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default:
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issueIndexerQueue = &queue.DummyQueue{}
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}
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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 populate bool
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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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holder.cancel()
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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 := NewBleveIndexer(setting.Indexer.IssuePath)
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exist, err := issueIndexer.Init()
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if err != nil {
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holder.cancel()
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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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populate = !exist
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holder.set(issueIndexer)
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graceful.GetManager().RunAtTerminate(func() {
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log.Debug("Closing issue indexer")
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issueIndexer := holder.get()
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if issueIndexer != nil {
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issueIndexer.Close()
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}
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finished()
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log.Info("PID: %d Issue Indexer closed", os.Getpid())
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})
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log.Debug("Created Bleve Indexer")
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case "elasticsearch":
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graceful.GetManager().RunWithShutdownFns(func(_, atTerminate func(func())) {
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pprof.SetGoroutineLabels(ctx)
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issueIndexer, err := NewElasticSearchIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueIndexerName)
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if err != nil {
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log.Fatal("Unable to initialize Elastic Search Issue Indexer at connection: %s Error: %v", setting.Indexer.IssueConnStr, err)
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}
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exist, err := issueIndexer.Init()
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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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populate = !exist
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holder.set(issueIndexer)
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atTerminate(finished)
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})
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case "db":
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issueIndexer := &DBIndexer{}
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holder.set(issueIndexer)
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graceful.GetManager().RunAtTerminate(finished)
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default:
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holder.cancel()
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log.Fatal("Unknown issue indexer type: %s", setting.Indexer.IssueType)
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}
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if queue, ok := issueIndexerQueue.(queue.Pausable); ok {
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holder.get().SetAvailabilityChangeCallback(func(available bool) {
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if !available {
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log.Info("Issue index queue paused")
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queue.Pause()
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} else {
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log.Info("Issue 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(issueIndexerQueue.Run)
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// Populate the index
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if populate {
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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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waitChannel <- time.Since(start)
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close(waitChannel)
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}()
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if syncReindex {
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select {
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case <-waitChannel:
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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 := <-waitChannel:
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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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if shutdownable, ok := issueIndexerQueue.(queue.Shutdownable); ok {
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shutdownable.Terminate()
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}
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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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// 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 := models.SearchRepositoryByName(&models.SearchRepoOptions{
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ListOptions: db.ListOptions{Page: page, PageSize: models.RepositoryListDefaultPageSize},
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OrderBy: db.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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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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UpdateRepoIndexer(repo)
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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(repo *repo_model.Repository) {
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is, err := models.Issues(&models.IssuesOptions{
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RepoIDs: []int64{repo.ID},
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IsClosed: util.OptionalBoolNone,
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IsPull: util.OptionalBoolNone,
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})
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if err != nil {
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log.Error("Issues: %v", err)
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return
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}
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if err = models.IssueList(is).LoadDiscussComments(); err != nil {
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log.Error("LoadComments: %v", err)
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return
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}
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for _, issue := range is {
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UpdateIssueIndexer(issue)
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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(issue *models.Issue) {
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var comments []string
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for _, comment := range issue.Comments {
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if comment.Type == models.CommentTypeComment {
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comments = append(comments, comment.Content)
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}
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}
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indexerData := &IndexerData{
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ID: issue.ID,
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RepoID: issue.RepoID,
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Title: issue.Title,
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Content: issue.Content,
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Comments: comments,
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}
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log.Debug("Adding to channel: %v", indexerData)
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if err := issueIndexerQueue.Push(indexerData); err != nil {
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log.Error("Unable to push to issue indexer: %v: Error: %v", indexerData, 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(repo *repo_model.Repository) {
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var ids []int64
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ids, err := models.GetIssueIDsByRepoID(repo.ID)
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if err != nil {
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log.Error("getIssueIDsByRepoID failed: %v", err)
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return
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}
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if len(ids) == 0 {
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return
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}
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indexerData := &IndexerData{
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IDs: ids,
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IsDelete: true,
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}
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if err := issueIndexerQueue.Push(indexerData); err != nil {
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log.Error("Unable to push to issue indexer: %v: Error: %v", indexerData, err)
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}
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}
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// SearchIssuesByKeyword search issue ids by keywords and repo id
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// WARNNING: You have to ensure user have permission to visit repoIDs' issues
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func SearchIssuesByKeyword(ctx context.Context, repoIDs []int64, keyword string) ([]int64, error) {
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var issueIDs []int64
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indexer := holder.get()
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if indexer == nil {
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log.Error("SearchIssuesByKeyword(): unable to get indexer!")
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return nil, fmt.Errorf("unable to get issue indexer")
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}
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res, err := indexer.Search(ctx, keyword, repoIDs, 50, 0)
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if err != nil {
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return nil, err
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}
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for _, r := range res.Hits {
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issueIDs = append(issueIDs, r.ID)
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}
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return issueIDs, nil
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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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indexer := holder.get()
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if indexer == nil {
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log.Error("IsAvailable(): unable to get indexer!")
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return false
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}
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return indexer.Ping()
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}
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