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Improve queue and logger context (#24924) 

Before there was a "graceful function": RunWithShutdownFns, it's mainly
for some modules which doesn't support context.

The old queue system doesn't work well with context, so the old queues
need it.

After the queue refactoring, the new queue works with context well, so,
use Golang context as much as possible, the `RunWithShutdownFns` could
be removed (replaced by RunWithCancel for context cancel mechanism), the
related code could be simplified.

This PR also fixes some legacy queue-init problems, eg:

* typo : archiver: "unable to create codes indexer queue" => "unable to
create repo-archive queue"
* no nil check for failed queues, which causes unfriendly panic

After this PR, many goroutines could have better display name:

![image](https://github.com/go-gitea/gitea/assets/2114189/701b2a9b-8065-4137-aeaa-0bda2b34604a)

![image](https://github.com/go-gitea/gitea/assets/2114189/f1d5f50f-0534-40f0-b0be-f2c9daa5fe92)
This commit is contained in:
wxiaoguang 2023-05-26 15:31:55 +08:00 committed by GitHub
parent e4922d484b
commit 18f26cfbf7
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
31 changed files with 204 additions and 263 deletions
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43
modules/graceful/context.go
View File

@ -5,51 +5,8 @@ package graceful
import (
"context"
"time"
)
// ChannelContext is a context that wraps a channel and error as a context
type ChannelContext struct {
done <-chan struct{}
err error
}
// NewChannelContext creates a ChannelContext from a channel and error
func NewChannelContext(done <-chan struct{}, err error) *ChannelContext {
return &ChannelContext{
done: done,
err: err,
}
}
// Deadline returns the time when work done on behalf of this context
// should be canceled. There is no Deadline for a ChannelContext
func (ctx *ChannelContext) Deadline() (deadline time.Time, ok bool) {
return deadline, ok
}
// Done returns the channel provided at the creation of this context.
// When closed, work done on behalf of this context should be canceled.
func (ctx *ChannelContext) Done() <-chan struct{} {
return ctx.done
}
// Err returns nil, if Done is not closed. If Done is closed,
// Err returns the error provided at the creation of this context
func (ctx *ChannelContext) Err() error {
select {
case <-ctx.done:
return ctx.err
default:
return nil
}
}
// Value returns nil for all calls as no values are or can be associated with this context
func (ctx *ChannelContext) Value(key interface{}) interface{} {
return nil
}
// ShutdownContext returns a context.Context that is Done at shutdown
// Callers using this context should ensure that they are registered as a running server
// in order that they are waited for.

62
modules/graceful/manager.go
View File

@ -23,6 +23,11 @@ const (
stateTerminate
)
type RunCanceler interface {
Run()
Cancel()
}
// There are some places that could inherit sockets:
//
// * HTTP or HTTPS main listener
@ -55,46 +60,19 @@ func InitManager(ctx context.Context) {
})
}
// WithCallback is a runnable to call when the caller has finished
type WithCallback func(callback func())
// RunnableWithShutdownFns is a runnable with functions to run at shutdown and terminate
// After the callback to atShutdown is called and is complete, the main function must return.
// Similarly the callback function provided to atTerminate must return once termination is complete.
// Please note that use of the atShutdown and atTerminate callbacks will create go-routines that will wait till their respective signals
// - users must therefore be careful to only call these as necessary.
type RunnableWithShutdownFns func(atShutdown, atTerminate func(func()))
// RunWithShutdownFns takes a function that has both atShutdown and atTerminate callbacks
// After the callback to atShutdown is called and is complete, the main function must return.
// Similarly the callback function provided to atTerminate must return once termination is complete.
// Please note that use of the atShutdown and atTerminate callbacks will create go-routines that will wait till their respective signals
// - users must therefore be careful to only call these as necessary.
func (g *Manager) RunWithShutdownFns(run RunnableWithShutdownFns) {
// RunWithCancel helps to run a function with a custom context, the Cancel function will be called at shutdown
// The Cancel function should stop the Run function in predictable time.
func (g *Manager) RunWithCancel(rc RunCanceler) {
g.RunAtShutdown(context.Background(), rc.Cancel)
g.runningServerWaitGroup.Add(1)
defer g.runningServerWaitGroup.Done()
defer func() {
if err := recover(); err != nil {
log.Critical("PANIC during RunWithShutdownFns: %v\nStacktrace: %s", err, log.Stack(2))
log.Critical("PANIC during RunWithCancel: %v\nStacktrace: %s", err, log.Stack(2))
g.doShutdown()
}
}()
run(func(atShutdown func()) {
g.lock.Lock()
defer g.lock.Unlock()
g.toRunAtShutdown = append(g.toRunAtShutdown,
func() {
defer func() {
if err := recover(); err != nil {
log.Critical("PANIC during RunWithShutdownFns: %v\nStacktrace: %s", err, log.Stack(2))
g.doShutdown()
}
}()
atShutdown()
})
}, func(atTerminate func()) {
g.RunAtTerminate(atTerminate)
})
rc.Run()
}
// RunWithShutdownContext takes a function that has a context to watch for shutdown.
@ -151,21 +129,6 @@ func (g *Manager) RunAtShutdown(ctx context.Context, shutdown func()) {
})
}
// RunAtHammer creates a go-routine to run the provided function at shutdown
func (g *Manager) RunAtHammer(hammer func()) {
g.lock.Lock()
defer g.lock.Unlock()
g.toRunAtHammer = append(g.toRunAtHammer,
func() {
defer func() {
if err := recover(); err != nil {
log.Critical("PANIC during RunAtHammer: %v\nStacktrace: %s", err, log.Stack(2))
}
}()
hammer()
})
}
func (g *Manager) doShutdown() {
if !g.setStateTransition(stateRunning, stateShuttingDown) {
g.DoImmediateHammer()
@ -206,9 +169,6 @@ func (g *Manager) doHammerTime(d time.Duration) {
g.hammerCtxCancel()
atHammerCtx := pprof.WithLabels(g.terminateCtx, pprof.Labels("graceful-lifecycle", "post-hammer"))
pprof.SetGoroutineLabels(atHammerCtx)
for _, fn := range g.toRunAtHammer {
go fn()
}
}
g.lock.Unlock()
}

1
modules/graceful/manager_unix.go
View File

@ -41,7 +41,6 @@ type Manager struct {
terminateWaitGroup sync.WaitGroup
toRunAtShutdown []func()
toRunAtHammer []func()
toRunAtTerminate []func()
}

1
modules/graceful/manager_windows.go
View File

@ -50,7 +50,6 @@ type Manager struct {
shutdownRequested chan struct{}
toRunAtShutdown []func()
toRunAtHammer []func()
toRunAtTerminate []func()
}

6
modules/indexer/code/indexer.go
View File

@ -166,7 +166,7 @@ func Init() {
handler := func(items ...*IndexerData) (unhandled []*IndexerData) {
idx, err := indexer.get()
if idx == nil || err != nil {
log.Error("Codes indexer handler: unable to get indexer!")
log.Warn("Codes indexer handler: indexer is not ready, retry later.")
return items
}
@ -201,7 +201,7 @@ func Init() {
return unhandled
}
indexerQueue = queue.CreateUniqueQueue("code_indexer", handler)
indexerQueue = queue.CreateUniqueQueue(ctx, "code_indexer", handler)
if indexerQueue == nil {
log.Fatal("Unable to create codes indexer queue")
}
@ -259,7 +259,7 @@ func Init() {
indexer.set(rIndexer)
// Start processing the queue
go graceful.GetManager().RunWithShutdownFns(indexerQueue.Run)
go graceful.GetManager().RunWithCancel(indexerQueue)
if populate {
go graceful.GetManager().RunWithShutdownContext(populateRepoIndexer)

71
modules/indexer/issues/indexer.go
View File

@ -102,7 +102,7 @@ var (
func InitIssueIndexer(syncReindex bool) {
ctx, _, finished := process.GetManager().AddTypedContext(context.Background(), "Service: IssueIndexer", process.SystemProcessType, false)
waitChannel := make(chan time.Duration, 1)
indexerInitWaitChannel := make(chan time.Duration, 1)
// Create the Queue
switch setting.Indexer.IssueType {
@ -110,7 +110,7 @@ func InitIssueIndexer(syncReindex bool) {
handler := func(items ...*IndexerData) (unhandled []*IndexerData) {
indexer := holder.get()
if indexer == nil {
log.Error("Issue indexer handler: unable to get indexer.")
log.Warn("Issue indexer handler: indexer is not ready, retry later.")
return items
}
toIndex := make([]*IndexerData, 0, len(items))
@ -138,15 +138,17 @@ func InitIssueIndexer(syncReindex bool) {
return unhandled
}
issueIndexerQueue = queue.CreateSimpleQueue("issue_indexer", handler)
issueIndexerQueue = queue.CreateSimpleQueue(ctx, "issue_indexer", handler)
if issueIndexerQueue == nil {
log.Fatal("Unable to create issue indexer queue")
}
default:
issueIndexerQueue = queue.CreateSimpleQueue[*IndexerData]("issue_indexer", nil)
issueIndexerQueue = queue.CreateSimpleQueue[*IndexerData](ctx, "issue_indexer", nil)
}
graceful.GetManager().RunAtTerminate(finished)
// Create the Indexer
go func() {
pprof.SetGoroutineLabels(ctx)
@ -178,51 +180,41 @@ func InitIssueIndexer(syncReindex bool) {
if issueIndexer != nil {
issueIndexer.Close()
}
finished()
log.Info("PID: %d Issue Indexer closed", os.Getpid())
})
log.Debug("Created Bleve Indexer")
case "elasticsearch":
graceful.GetManager().RunWithShutdownFns(func(_, atTerminate func(func())) {
pprof.SetGoroutineLabels(ctx)
issueIndexer, err := NewElasticSearchIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueIndexerName)
if err != nil {
log.Fatal("Unable to initialize Elastic Search Issue Indexer at connection: %s Error: %v", setting.Indexer.IssueConnStr, err)
}
exist, err := issueIndexer.Init()
if err != nil {
log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
}
populate = !exist
holder.set(issueIndexer)
atTerminate(finished)
})
issueIndexer, err := NewElasticSearchIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueIndexerName)
if err != nil {
log.Fatal("Unable to initialize Elastic Search Issue Indexer at connection: %s Error: %v", setting.Indexer.IssueConnStr, err)
}
exist, err := issueIndexer.Init()
if err != nil {
log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
}
populate = !exist
holder.set(issueIndexer)
case "db":
issueIndexer := &DBIndexer{}
holder.set(issueIndexer)
graceful.GetManager().RunAtTerminate(finished)
case "meilisearch":
graceful.GetManager().RunWithShutdownFns(func(_, atTerminate func(func())) {
pprof.SetGoroutineLabels(ctx)
issueIndexer, err := NewMeilisearchIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueConnAuth, setting.Indexer.IssueIndexerName)
if err != nil {
log.Fatal("Unable to initialize Meilisearch Issue Indexer at connection: %s Error: %v", setting.Indexer.IssueConnStr, err)
}
exist, err := issueIndexer.Init()
if err != nil {
log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
}
populate = !exist
holder.set(issueIndexer)
atTerminate(finished)
})
issueIndexer, err := NewMeilisearchIndexer(setting.Indexer.IssueConnStr, setting.Indexer.IssueConnAuth, setting.Indexer.IssueIndexerName)
if err != nil {
log.Fatal("Unable to initialize Meilisearch Issue Indexer at connection: %s Error: %v", setting.Indexer.IssueConnStr, err)
}
exist, err := issueIndexer.Init()
if err != nil {
log.Fatal("Unable to issueIndexer.Init with connection %s Error: %v", setting.Indexer.IssueConnStr, err)
}
populate = !exist
holder.set(issueIndexer)
default:
holder.cancel()
log.Fatal("Unknown issue indexer type: %s", setting.Indexer.IssueType)
}
// Start processing the queue
go graceful.GetManager().RunWithShutdownFns(issueIndexerQueue.Run)
go graceful.GetManager().RunWithCancel(issueIndexerQueue)
// Populate the index
if populate {
@ -232,13 +224,14 @@ func InitIssueIndexer(syncReindex bool) {
go graceful.GetManager().RunWithShutdownContext(populateIssueIndexer)
}
}
waitChannel <- time.Since(start)
close(waitChannel)
indexerInitWaitChannel <- time.Since(start)
close(indexerInitWaitChannel)
}()
if syncReindex {
select {
case <-waitChannel:
case <-indexerInitWaitChannel:
case <-graceful.GetManager().IsShutdown():
}
} else if setting.Indexer.StartupTimeout > 0 {
@ -249,7 +242,7 @@ func InitIssueIndexer(syncReindex bool) {
timeout += setting.GracefulHammerTime
}
select {
case duration := <-waitChannel:
case duration := <-indexerInitWaitChannel:
log.Info("Issue Indexer Initialization took %v", duration)
case <-graceful.GetManager().IsShutdown():
log.Warn("Shutdown occurred before issue index initialisation was complete")

8
modules/indexer/stats/queue.go
View File

@ -29,13 +29,11 @@ func handler(items ...int64) []int64 {
}
func initStatsQueue() error {
statsQueue = queue.CreateUniqueQueue("repo_stats_update", handler)
statsQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "repo_stats_update", handler)
if statsQueue == nil {
return fmt.Errorf("Unable to create repo_stats_update Queue")
return fmt.Errorf("unable to create repo_stats_update queue")
}
go graceful.GetManager().RunWithShutdownFns(statsQueue.Run)
go graceful.GetManager().RunWithCancel(statsQueue)
return nil
}

11
modules/log/event_writer_base.go
View File

@ -8,6 +8,7 @@ import (
"fmt"
"io"
"regexp"
"runtime/pprof"
"time"
)
@ -143,9 +144,17 @@ func eventWriterStartGo(ctx context.Context, w EventWriter, shared bool) {
}
w.Base().shared = shared
w.Base().stopped = make(chan struct{})
ctxDesc := "Logger: EventWriter: " + w.GetWriterName()
if shared {
ctxDesc = "Logger: EventWriter (shared): " + w.GetWriterName()
}
writerCtx, writerCancel := newContext(ctx, ctxDesc)
go func() {
defer writerCancel()
defer close(w.Base().stopped)
w.Run(ctx)
pprof.SetGoroutineLabels(writerCtx)
w.Run(writerCtx)
}()
}

2
modules/log/event_writer_conn_test.go
View File

@ -40,7 +40,7 @@ func TestConnLogger(t *testing.T) {
level := INFO
flags := LstdFlags | LUTC | Lfuncname
logger := NewLoggerWithWriters(context.Background(), NewEventWriterConn("test-conn", WriterMode{
logger := NewLoggerWithWriters(context.Background(), "test", NewEventWriterConn("test-conn", WriterMode{
Level: level,
Prefix: prefix,
Flags: FlagsFromBits(flags),

19
modules/log/init.go
View File

@ -4,14 +4,19 @@
package log
import (
"context"
"runtime"
"strings"
"sync/atomic"
"code.gitea.io/gitea/modules/process"
"code.gitea.io/gitea/modules/util/rotatingfilewriter"
)
var projectPackagePrefix string
var (
projectPackagePrefix string
processTraceDisabled atomic.Int64
)
func init() {
_, filename, _, _ := runtime.Caller(0)
@ -24,6 +29,10 @@ func init() {
rotatingfilewriter.ErrorPrintf = FallbackErrorf
process.Trace = func(start bool, pid process.IDType, description string, parentPID process.IDType, typ string) {
// the logger manager has its own mutex lock, so it's safe to use "Load" here
if processTraceDisabled.Load() != 0 {
return
}
if start && parentPID != "" {
Log(1, TRACE, "Start %s: %s (from %s) (%s)", NewColoredValue(pid, FgHiYellow), description, NewColoredValue(parentPID, FgYellow), NewColoredValue(typ, Reset))
} else if start {
@ -33,3 +42,11 @@ func init() {
}
}
}
func newContext(parent context.Context, desc string) (ctx context.Context, cancel context.CancelFunc) {
// the "process manager" also calls "log.Trace()" to output logs, so if we want to create new contexts by the manager, we need to disable the trace temporarily
processTraceDisabled.Add(1)
defer processTraceDisabled.Add(-1)
ctx, _, cancel = process.GetManager().AddTypedContext(parent, desc, process.SystemProcessType, false)
return ctx, cancel
}

4
modules/log/logger_impl.go
View File

@ -228,9 +228,9 @@ func (l *LoggerImpl) GetLevel() Level {
return Level(l.level.Load())
}
func NewLoggerWithWriters(ctx context.Context, writer ...EventWriter) *LoggerImpl {
func NewLoggerWithWriters(ctx context.Context, name string, writer ...EventWriter) *LoggerImpl {
l := &LoggerImpl{}
l.ctx, l.ctxCancel = context.WithCancel(ctx)
l.ctx, l.ctxCancel = newContext(ctx, "Logger: "+name)
l.LevelLogger = BaseLoggerToGeneralLogger(l)
l.eventWriters = map[string]EventWriter{}
l.syncLevelInternal()

8
modules/log/logger_test.go
View File

@ -53,7 +53,7 @@ func newDummyWriter(name string, level Level, delay time.Duration) *dummyWriter
}
func TestLogger(t *testing.T) {
logger := NewLoggerWithWriters(context.Background())
logger := NewLoggerWithWriters(context.Background(), "test")
dump := logger.DumpWriters()
assert.EqualValues(t, 0, len(dump))
@ -88,7 +88,7 @@ func TestLogger(t *testing.T) {
}
func TestLoggerPause(t *testing.T) {
logger := NewLoggerWithWriters(context.Background())
logger := NewLoggerWithWriters(context.Background(), "test")
w1 := newDummyWriter("dummy-1", DEBUG, 0)
logger.AddWriters(w1)
@ -117,7 +117,7 @@ func (t testLogString) LogString() string {
}
func TestLoggerLogString(t *testing.T) {
logger := NewLoggerWithWriters(context.Background())
logger := NewLoggerWithWriters(context.Background(), "test")
w1 := newDummyWriter("dummy-1", DEBUG, 0)
w1.Mode.Colorize = true
@ -130,7 +130,7 @@ func TestLoggerLogString(t *testing.T) {
}
func TestLoggerExpressionFilter(t *testing.T) {
logger := NewLoggerWithWriters(context.Background())
logger := NewLoggerWithWriters(context.Background(), "test")
w1 := newDummyWriter("dummy-1", DEBUG, 0)
w1.Mode.Expression = "foo.*"

4
modules/log/manager.go
View File

@ -39,7 +39,7 @@ func (m *LoggerManager) GetLogger(name string) *LoggerImpl {
logger := m.loggers[name]
if logger == nil {
logger = NewLoggerWithWriters(m.ctx)
logger = NewLoggerWithWriters(m.ctx, name)
m.loggers[name] = logger
if name == DEFAULT {
m.defaultLogger.Store(logger)
@ -137,6 +137,6 @@ func GetManager() *LoggerManager {
func NewManager() *LoggerManager {
m := &LoggerManager{writers: map[string]EventWriter{}, loggers: map[string]*LoggerImpl{}}
m.ctx, m.ctxCancel = context.WithCancel(context.Background())
m.ctx, m.ctxCancel = newContext(context.Background(), "LoggerManager")
return m
}

8
modules/mirror/mirror.go
View File

@ -33,9 +33,11 @@ func StartSyncMirrors(queueHandle func(data ...*SyncRequest) []*SyncRequest) {
if !setting.Mirror.Enabled {
return
}
mirrorQueue = queue.CreateUniqueQueue("mirror", queueHandle)
go graceful.GetManager().RunWithShutdownFns(mirrorQueue.Run)
mirrorQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "mirror", queueHandle)
if mirrorQueue == nil {
log.Fatal("Unable to create mirror queue")
}
go graceful.GetManager().RunWithCancel(mirrorQueue)
}
// AddPullMirrorToQueue adds repoID to mirror queue

7
modules/notification/ui/ui.go
View File

@ -37,7 +37,10 @@ var _ base.Notifier = &notificationService{}
// NewNotifier create a new notificationService notifier
func NewNotifier() base.Notifier {
ns := &notificationService{}
ns.issueQueue = queue.CreateSimpleQueue("notification-service", handler)
ns.issueQueue = queue.CreateSimpleQueue(graceful.GetManager().ShutdownContext(), "notification-service", handler)
if ns.issueQueue == nil {
log.Fatal("Unable to create notification-service queue")
}
return ns
}
@ -51,7 +54,7 @@ func handler(items ...issueNotificationOpts) []issueNotificationOpts {
}
func (ns *notificationService) Run() {
go graceful.GetManager().RunWithShutdownFns(ns.issueQueue.Run)
go graceful.GetManager().RunWithCancel(ns.issueQueue) // TODO: using "go" here doesn't seem right, just leave it as old code
}
func (ns *notificationService) NotifyCreateIssueComment(ctx context.Context, doer *user_model.User, repo *repo_model.Repository,

11
modules/process/manager.go
View File

@ -167,6 +167,7 @@ func (pm *Manager) Add(ctx context.Context, description string, cancel context.C
pm.processMap[pid] = process
pm.mutex.Unlock()
Trace(true, pid, description, parentPID, processType)
pprofCtx := pprof.WithLabels(ctx, pprof.Labels(DescriptionPProfLabel, description, PPIDPProfLabel, string(parentPID), PIDPProfLabel, string(pid), ProcessTypePProfLabel, processType))
@ -200,10 +201,16 @@ func (pm *Manager) nextPID() (start time.Time, pid IDType) {
}
func (pm *Manager) remove(process *process) {
deleted := false
pm.mutex.Lock()
defer pm.mutex.Unlock()
if p := pm.processMap[process.PID]; p == process {
if pm.processMap[process.PID] == process {
delete(pm.processMap, process.PID)
deleted = true
}
pm.mutex.Unlock()
if deleted {
Trace(false, process.PID, process.Description, process.ParentPID, process.Type)
}
}

12
modules/queue/manager.go
View File

@ -88,22 +88,22 @@ func (m *Manager) FlushAll(ctx context.Context, timeout time.Duration) error {
}
// CreateSimpleQueue creates a simple queue from global setting config provider by name
func CreateSimpleQueue[T any](name string, handler HandlerFuncT[T]) *WorkerPoolQueue[T] {
return createWorkerPoolQueue(name, setting.CfgProvider, handler, false)
func CreateSimpleQueue[T any](ctx context.Context, name string, handler HandlerFuncT[T]) *WorkerPoolQueue[T] {
return createWorkerPoolQueue(ctx, name, setting.CfgProvider, handler, false)
}
// CreateUniqueQueue creates a unique queue from global setting config provider by name
func CreateUniqueQueue[T any](name string, handler HandlerFuncT[T]) *WorkerPoolQueue[T] {
return createWorkerPoolQueue(name, setting.CfgProvider, handler, true)
func CreateUniqueQueue[T any](ctx context.Context, name string, handler HandlerFuncT[T]) *WorkerPoolQueue[T] {
return createWorkerPoolQueue(ctx, name, setting.CfgProvider, handler, true)
}
func createWorkerPoolQueue[T any](name string, cfgProvider setting.ConfigProvider, handler HandlerFuncT[T], unique bool) *WorkerPoolQueue[T] {
func createWorkerPoolQueue[T any](ctx context.Context, name string, cfgProvider setting.ConfigProvider, handler HandlerFuncT[T], unique bool) *WorkerPoolQueue[T] {
queueSetting, err := setting.GetQueueSettings(cfgProvider, name)
if err != nil {
log.Error("Failed to get queue settings for %q: %v", name, err)
return nil
}
w, err := NewWorkerPoolQueueBySetting(name, queueSetting, handler, unique)
w, err := NewWorkerPoolQueueWithContext(ctx, name, queueSetting, handler, unique)
if err != nil {
log.Error("Failed to create queue %q: %v", name, err)
return nil

6
modules/queue/manager_test.go
View File

@ -29,7 +29,7 @@ func TestManager(t *testing.T) {
if err != nil {
return nil, err
}
return NewWorkerPoolQueueBySetting(name, qs, func(s ...int) (unhandled []int) { return nil }, false)
return newWorkerPoolQueueForTest(name, qs, func(s ...int) (unhandled []int) { return nil }, false)
}
// test invalid CONN_STR
@ -80,7 +80,7 @@ MAX_WORKERS = 2
assert.NoError(t, err)
q1 := createWorkerPoolQueue[string]("no-such", cfgProvider, nil, false)
q1 := createWorkerPoolQueue[string](context.Background(), "no-such", cfgProvider, nil, false)
assert.Equal(t, "no-such", q1.GetName())
assert.Equal(t, "dummy", q1.GetType()) // no handler, so it becomes dummy
assert.Equal(t, filepath.Join(setting.AppDataPath, "queues/dir1"), q1.baseConfig.DataFullDir)
@ -96,7 +96,7 @@ MAX_WORKERS = 2
assert.Equal(t, "string", q1.GetItemTypeName())
qid1 := GetManager().qidCounter
q2 := createWorkerPoolQueue("sub", cfgProvider, func(s ...int) (unhandled []int) { return nil }, false)
q2 := createWorkerPoolQueue(context.Background(), "sub", cfgProvider, func(s ...int) (unhandled []int) { return nil }, false)
assert.Equal(t, "sub", q2.GetName())
assert.Equal(t, "level", q2.GetType())
assert.Equal(t, filepath.Join(setting.AppDataPath, "queues/dir2"), q2.baseConfig.DataFullDir)

24
modules/queue/workergroup.go
View File

@ -5,6 +5,7 @@ package queue
import (
"context"
"runtime/pprof"
"sync"
"sync/atomic"
"time"
@ -13,9 +14,10 @@ import (
)
var (
infiniteTimerC = make(chan time.Time)
batchDebounceDuration = 100 * time.Millisecond
workerIdleDuration = 1 * time.Second
infiniteTimerC = make(chan time.Time)
batchDebounceDuration = 100 * time.Millisecond
workerIdleDuration = 1 * time.Second
shutdownDefaultTimeout = 2 * time.Second
unhandledItemRequeueDuration atomic.Int64 // to avoid data race during test
)
@ -116,13 +118,15 @@ func (q *WorkerPoolQueue[T]) doWorkerHandle(batch []T) {
// If the queue is shutting down, it returns true and try to push the items
// Otherwise it does nothing and returns false
func (q *WorkerPoolQueue[T]) basePushForShutdown(items ...T) bool {
ctxShutdown := q.ctxShutdown.Load()
if ctxShutdown == nil {
shutdownTimeout := time.Duration(q.shutdownTimeout.Load())
if shutdownTimeout == 0 {
return false
}
ctxShutdown, ctxShutdownCancel := context.WithTimeout(context.Background(), shutdownTimeout)
defer ctxShutdownCancel()
for _, item := range items {
// if there is still any error, the queue can do nothing instead of losing the items
if err := q.baseQueue.PushItem(*ctxShutdown, q.marshal(item)); err != nil {
if err := q.baseQueue.PushItem(ctxShutdown, q.marshal(item)); err != nil {
log.Error("Failed to requeue item for queue %q when shutting down: %v", q.GetName(), err)
}
}
@ -246,6 +250,8 @@ var skipFlushChan = make(chan flushType) // an empty flush chan, used to skip re
// doRun is the main loop of the queue. All related "doXxx" functions are executed in its context.
func (q *WorkerPoolQueue[T]) doRun() {
pprof.SetGoroutineLabels(q.ctxRun)
log.Debug("Queue %q starts running", q.GetName())
defer log.Debug("Queue %q stops running", q.GetName())
@ -271,8 +277,8 @@ func (q *WorkerPoolQueue[T]) doRun() {
}
}
ctxShutdownPtr := q.ctxShutdown.Load()
if ctxShutdownPtr != nil {
shutdownTimeout := time.Duration(q.shutdownTimeout.Load())
if shutdownTimeout != 0 {
// if there is a shutdown context, try to push the items back to the base queue
q.basePushForShutdown(unhandled...)
workerDone := make(chan struct{})
@ -280,7 +286,7 @@ func (q *WorkerPoolQueue[T]) doRun() {
go func() { wg.wg.Wait(); close(workerDone) }()
select {
case <-workerDone:
case <-(*ctxShutdownPtr).Done():
case <-time.After(shutdownTimeout):
log.Error("Queue %q is shutting down, but workers are still running after timeout", q.GetName())
}
} else {

33
modules/queue/workerqueue.go
View File

@ -10,9 +10,9 @@ import (
"sync/atomic"
"time"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/process"
"code.gitea.io/gitea/modules/setting"
)
@ -21,8 +21,9 @@ import (
type WorkerPoolQueue[T any] struct {
ctxRun context.Context
ctxRunCancel context.CancelFunc
ctxShutdown atomic.Pointer[context.Context]
shutdownDone chan struct{}
shutdownDone chan struct{}
shutdownTimeout atomic.Int64 // in case some buggy handlers (workers) would hang forever, "shutdown" should finish in predictable time
origHandler HandlerFuncT[T]
safeHandler HandlerFuncT[T]
@ -175,22 +176,19 @@ func (q *WorkerPoolQueue[T]) Has(data T) (bool, error) {
return q.baseQueue.HasItem(q.ctxRun, q.marshal(data))
}
func (q *WorkerPoolQueue[T]) Run(atShutdown, atTerminate func(func())) {
atShutdown(func() {
// in case some queue handlers are slow or have hanging bugs, at most wait for a short time
q.ShutdownWait(1 * time.Second)
})
func (q *WorkerPoolQueue[T]) Run() {
q.doRun()
}
func (q *WorkerPoolQueue[T]) Cancel() {
q.ctxRunCancel()
}
// ShutdownWait shuts down the queue, waits for all workers to finish their jobs, and pushes the unhandled items back to the base queue
// It waits for all workers (handlers) to finish their jobs, in case some buggy handlers would hang forever, a reasonable timeout is needed
func (q *WorkerPoolQueue[T]) ShutdownWait(timeout time.Duration) {
shutdownCtx, shutdownCtxCancel := context.WithTimeout(context.Background(), timeout)
defer shutdownCtxCancel()
if q.ctxShutdown.CompareAndSwap(nil, &shutdownCtx) {
q.ctxRunCancel()
}
q.shutdownTimeout.Store(int64(timeout))
q.ctxRunCancel()
<-q.shutdownDone
}
@ -207,7 +205,11 @@ func getNewQueueFn(t string) (string, func(cfg *BaseConfig, unique bool) (baseQu
}
}
func NewWorkerPoolQueueBySetting[T any](name string, queueSetting setting.QueueSettings, handler HandlerFuncT[T], unique bool) (*WorkerPoolQueue[T], error) {
func newWorkerPoolQueueForTest[T any](name string, queueSetting setting.QueueSettings, handler HandlerFuncT[T], unique bool) (*WorkerPoolQueue[T], error) {
return NewWorkerPoolQueueWithContext(context.Background(), name, queueSetting, handler, unique)
}
func NewWorkerPoolQueueWithContext[T any](ctx context.Context, name string, queueSetting setting.QueueSettings, handler HandlerFuncT[T], unique bool) (*WorkerPoolQueue[T], error) {
if handler == nil {
log.Debug("Use dummy queue for %q because handler is nil and caller doesn't want to process the queue items", name)
queueSetting.Type = "dummy"
@ -224,10 +226,11 @@ func NewWorkerPoolQueueBySetting[T any](name string, queueSetting setting.QueueS
}
log.Trace("Created queue %q of type %q", name, queueType)
w.ctxRun, w.ctxRunCancel = context.WithCancel(graceful.GetManager().ShutdownContext())
w.ctxRun, _, w.ctxRunCancel = process.GetManager().AddTypedContext(ctx, "Queue: "+w.GetName(), process.SystemProcessType, false)
w.batchChan = make(chan []T)
w.flushChan = make(chan flushType)
w.shutdownDone = make(chan struct{})
w.shutdownTimeout.Store(int64(shutdownDefaultTimeout))
w.workerMaxNum = queueSetting.MaxWorkers
w.batchLength = queueSetting.BatchLength

30
modules/queue/workerqueue_test.go
View File

@ -16,17 +16,9 @@ import (
)
func runWorkerPoolQueue[T any](q *WorkerPoolQueue[T]) func() {
var stop func()
started := make(chan struct{})
stopped := make(chan struct{})
go func() {
q.Run(func(f func()) { stop = f; close(started) }, nil)
close(stopped)
}()
<-started
go q.Run()
return func() {
stop()
<-stopped
q.ShutdownWait(1 * time.Second)
}
}
@ -57,7 +49,7 @@ func TestWorkerPoolQueueUnhandled(t *testing.T) {
return unhandled
}
q, _ := NewWorkerPoolQueueBySetting("test-workpoolqueue", queueSetting, handler, false)
q, _ := newWorkerPoolQueueForTest("test-workpoolqueue", queueSetting, handler, false)
stop := runWorkerPoolQueue(q)
for i := 0; i < queueSetting.Length; i++ {
testRecorder.Record("push:%v", i)
@ -145,7 +137,7 @@ func testWorkerPoolQueuePersistence(t *testing.T, queueSetting setting.QueueSett
return nil
}
q, _ := NewWorkerPoolQueueBySetting("pr_patch_checker_test", queueSetting, testHandler, true)
q, _ := newWorkerPoolQueueForTest("pr_patch_checker_test", queueSetting, testHandler, true)
stop := runWorkerPoolQueue(q)
for i := 0; i < testCount; i++ {
_ = q.Push("task-" + strconv.Itoa(i))
@ -169,7 +161,7 @@ func testWorkerPoolQueuePersistence(t *testing.T, queueSetting setting.QueueSett
return nil
}
q, _ := NewWorkerPoolQueueBySetting("pr_patch_checker_test", queueSetting, testHandler, true)
q, _ := newWorkerPoolQueueForTest("pr_patch_checker_test", queueSetting, testHandler, true)
stop := runWorkerPoolQueue(q)
assert.NoError(t, q.FlushWithContext(context.Background(), 0))
stop()
@ -194,7 +186,7 @@ func TestWorkerPoolQueueActiveWorkers(t *testing.T) {
return nil
}
q, _ := NewWorkerPoolQueueBySetting("test-workpoolqueue", setting.QueueSettings{Type: "channel", BatchLength: 1, MaxWorkers: 1, Length: 100}, handler, false)
q, _ := newWorkerPoolQueueForTest("test-workpoolqueue", setting.QueueSettings{Type: "channel", BatchLength: 1, MaxWorkers: 1, Length: 100}, handler, false)
stop := runWorkerPoolQueue(q)
for i := 0; i < 5; i++ {
assert.NoError(t, q.Push(i))
@ -210,7 +202,7 @@ func TestWorkerPoolQueueActiveWorkers(t *testing.T) {
assert.EqualValues(t, 1, q.GetWorkerNumber()) // there is at least one worker after the queue begins working
stop()
q, _ = NewWorkerPoolQueueBySetting("test-workpoolqueue", setting.QueueSettings{Type: "channel", BatchLength: 1, MaxWorkers: 3, Length: 100}, handler, false)
q, _ = newWorkerPoolQueueForTest("test-workpoolqueue", setting.QueueSettings{Type: "channel", BatchLength: 1, MaxWorkers: 3, Length: 100}, handler, false)
stop = runWorkerPoolQueue(q)
for i := 0; i < 15; i++ {
assert.NoError(t, q.Push(i))
@ -238,23 +230,23 @@ func TestWorkerPoolQueueShutdown(t *testing.T) {
if items[0] == 0 {
close(handlerCalled)
}
time.Sleep(100 * time.Millisecond)
time.Sleep(400 * time.Millisecond)
return items
}
qs := setting.QueueSettings{Type: "level", Datadir: t.TempDir() + "/queue", BatchLength: 3, MaxWorkers: 4, Length: 20}
q, _ := NewWorkerPoolQueueBySetting("test-workpoolqueue", qs, handler, false)
q, _ := newWorkerPoolQueueForTest("test-workpoolqueue", qs, handler, false)
stop := runWorkerPoolQueue(q)
for i := 0; i < qs.Length; i++ {
assert.NoError(t, q.Push(i))
}
<-handlerCalled
time.Sleep(50 * time.Millisecond) // wait for a while to make sure all workers are active
time.Sleep(200 * time.Millisecond) // wait for a while to make sure all workers are active
assert.EqualValues(t, 4, q.GetWorkerActiveNumber())
stop() // stop triggers shutdown
assert.EqualValues(t, 0, q.GetWorkerActiveNumber())
// no item was ever handled, so we still get all of them again
q, _ = NewWorkerPoolQueueBySetting("test-workpoolqueue", qs, handler, false)
q, _ = newWorkerPoolQueueForTest("test-workpoolqueue", qs, handler, false)
assert.EqualValues(t, 20, q.GetQueueItemNumber())
}

15
routers/web/admin/queue_tester.go
View File

@ -4,12 +4,13 @@
package admin
import (
gocontext "context"
"runtime/pprof"
"sync"
"time"
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/process"
"code.gitea.io/gitea/modules/queue"
"code.gitea.io/gitea/modules/setting"
)
@ -21,6 +22,7 @@ var testQueueOnce sync.Once
// developers could see the queue length / worker number / items number on the admin page and try to remove the items
func initTestQueueOnce() {
testQueueOnce.Do(func() {
ctx, _, finished := process.GetManager().AddTypedContext(graceful.GetManager().ShutdownContext(), "TestQueue", process.SystemProcessType, false)
qs := setting.QueueSettings{
Name: "test-queue",
Type: "channel",
@ -28,7 +30,7 @@ func initTestQueueOnce() {
BatchLength: 2,
MaxWorkers: 3,
}
testQueue, err := queue.NewWorkerPoolQueueBySetting("test-queue", qs, func(t ...int64) (unhandled []int64) {
testQueue, err := queue.NewWorkerPoolQueueWithContext(ctx, "test-queue", qs, func(t ...int64) (unhandled []int64) {
for range t {
select {
case <-graceful.GetManager().ShutdownContext().Done():
@ -44,8 +46,11 @@ func initTestQueueOnce() {
queue.GetManager().AddManagedQueue(testQueue)
testQueue.SetWorkerMaxNumber(5)
go graceful.GetManager().RunWithShutdownFns(testQueue.Run)
go graceful.GetManager().RunWithShutdownContext(func(ctx gocontext.Context) {
go graceful.GetManager().RunWithCancel(testQueue)
go func() {
pprof.SetGoroutineLabels(ctx)
defer finished()
cnt := int64(0)
adding := true
for {
@ -67,6 +72,6 @@ func initTestQueueOnce() {
}
}
}
})
}()
})
}

8
services/actions/init.go
View File

@ -5,6 +5,7 @@ package actions
import (
"code.gitea.io/gitea/modules/graceful"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/notification"
"code.gitea.io/gitea/modules/queue"
"code.gitea.io/gitea/modules/setting"
@ -15,8 +16,11 @@ func Init() {
return
}
jobEmitterQueue = queue.CreateUniqueQueue("actions_ready_job", jobEmitterQueueHandler)
go graceful.GetManager().RunWithShutdownFns(jobEmitterQueue.Run)
jobEmitterQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "actions_ready_job", jobEmitterQueueHandler)
if jobEmitterQueue == nil {
log.Fatal("Unable to create actions_ready_job queue")
}
go graceful.GetManager().RunWithCancel(jobEmitterQueue)
notification.RegisterNotifier(NewNotifier())
}

6
services/automerge/automerge.go
View File

@ -29,11 +29,11 @@ var prAutoMergeQueue *queue.WorkerPoolQueue[string]
// Init runs the task queue to that handles auto merges
func Init() error {
prAutoMergeQueue = queue.CreateUniqueQueue("pr_auto_merge", handler)
prAutoMergeQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "pr_auto_merge", handler)
if prAutoMergeQueue == nil {
return fmt.Errorf("Unable to create pr_auto_merge Queue")
return fmt.Errorf("unable to create pr_auto_merge queue")
}
go graceful.GetManager().RunWithShutdownFns(prAutoMergeQueue.Run)
go graceful.GetManager().RunWithCancel(prAutoMergeQueue)
return nil
}

12
services/mailer/mailer.go
View File

@ -401,7 +401,9 @@ func NewContext(ctx context.Context) {
Sender = &smtpSender{}
}
mailQueue = queue.CreateSimpleQueue("mail", func(items ...*Message) []*Message {
subjectTemplates, bodyTemplates = templates.Mailer(ctx)
mailQueue = queue.CreateSimpleQueue(graceful.GetManager().ShutdownContext(), "mail", func(items ...*Message) []*Message {
for _, msg := range items {
gomailMsg := msg.ToMessage()
log.Trace("New e-mail sending request %s: %s", gomailMsg.GetHeader("To"), msg.Info)
@ -413,10 +415,10 @@ func NewContext(ctx context.Context) {
}
return nil
})
go graceful.GetManager().RunWithShutdownFns(mailQueue.Run)
subjectTemplates, bodyTemplates = templates.Mailer(ctx)
if mailQueue == nil {
log.Fatal("Unable to create mail queue")
}
go graceful.GetManager().RunWithCancel(mailQueue)
}
// SendAsync send mail asynchronously

6
services/pull/check.go
View File

@ -384,13 +384,13 @@ func CheckPRsForBaseBranch(baseRepo *repo_model.Repository, baseBranchName strin
// Init runs the task queue to test all the checking status pull requests
func Init() error {
prPatchCheckerQueue = queue.CreateUniqueQueue("pr_patch_checker", handler)
prPatchCheckerQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "pr_patch_checker", handler)
if prPatchCheckerQueue == nil {
return fmt.Errorf("Unable to create pr_patch_checker Queue")
return fmt.Errorf("unable to create pr_patch_checker queue")
}
go graceful.GetManager().RunWithShutdownFns(prPatchCheckerQueue.Run)
go graceful.GetManager().RunWithCancel(prPatchCheckerQueue)
go graceful.GetManager().RunWithShutdownContext(InitializePullRequests)
return nil
}

18
services/pull/check_test.go
View File

@ -5,6 +5,7 @@
package pull
import (
"context"
"strconv"
"testing"
"time"
@ -31,7 +32,7 @@ func TestPullRequest_AddToTaskQueue(t *testing.T) {
cfg, err := setting.GetQueueSettings(setting.CfgProvider, "pr_patch_checker")
assert.NoError(t, err)
prPatchCheckerQueue, err = queue.NewWorkerPoolQueueBySetting("pr_patch_checker", cfg, testHandler, true)
prPatchCheckerQueue, err = queue.NewWorkerPoolQueueWithContext(context.Background(), "pr_patch_checker", cfg, testHandler, true)
assert.NoError(t, err)
pr := unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: 2})
@ -46,12 +47,7 @@ func TestPullRequest_AddToTaskQueue(t *testing.T) {
assert.True(t, has)
assert.NoError(t, err)
var queueShutdown, queueTerminate []func()
go prPatchCheckerQueue.Run(func(shutdown func()) {
queueShutdown = append(queueShutdown, shutdown)
}, func(terminate func()) {
queueTerminate = append(queueTerminate, terminate)
})
go prPatchCheckerQueue.Run()
select {
case id := <-idChan:
@ -67,12 +63,6 @@ func TestPullRequest_AddToTaskQueue(t *testing.T) {
pr = unittest.AssertExistsAndLoadBean(t, &issues_model.PullRequest{ID: 2})
assert.Equal(t, issues_model.PullRequestStatusChecking, pr.Status)
for _, callback := range queueShutdown {
callback()
}
for _, callback := range queueTerminate {
callback()
}
prPatchCheckerQueue.ShutdownWait(5 * time.Second)
prPatchCheckerQueue = nil
}

9
services/repository/archiver/archiver.go
View File

@ -297,7 +297,7 @@ func ArchiveRepository(request *ArchiveRequest) (*repo_model.RepoArchiver, error
var archiverQueue *queue.WorkerPoolQueue[*ArchiveRequest]
// Init initlize archive
// Init initializes archiver
func Init() error {
handler := func(items ...*ArchiveRequest) []*ArchiveRequest {
for _, archiveReq := range items {
@ -309,12 +309,11 @@ func Init() error {
return nil
}
archiverQueue = queue.CreateUniqueQueue("repo-archive", handler)
archiverQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "repo-archive", handler)
if archiverQueue == nil {
return errors.New("unable to create codes indexer queue")
return errors.New("unable to create repo-archive queue")
}
go graceful.GetManager().RunWithShutdownFns(archiverQueue.Run)
go graceful.GetManager().RunWithCancel(archiverQueue)
return nil
}

7
services/repository/push.go
View File

@ -42,12 +42,11 @@ func handler(items ...[]*repo_module.PushUpdateOptions) [][]*repo_module.PushUpd
}
func initPushQueue() error {
pushQueue = queue.CreateSimpleQueue("push_update", handler)
pushQueue = queue.CreateSimpleQueue(graceful.GetManager().ShutdownContext(), "push_update", handler)
if pushQueue == nil {
return errors.New("unable to create push_update Queue")
return errors.New("unable to create push_update queue")
}
go graceful.GetManager().RunWithShutdownFns(pushQueue.Run)
go graceful.GetManager().RunWithCancel(pushQueue)
return nil
}

9
services/task/task.go
View File

@ -37,14 +37,11 @@ func Run(t *admin_model.Task) error {
// Init will start the service to get all unfinished tasks and run them
func Init() error {
taskQueue = queue.CreateSimpleQueue("task", handler)
taskQueue = queue.CreateSimpleQueue(graceful.GetManager().ShutdownContext(), "task", handler)
if taskQueue == nil {
return fmt.Errorf("Unable to create Task Queue")
return fmt.Errorf("unable to create task queue")
}
go graceful.GetManager().RunWithShutdownFns(taskQueue.Run)
go graceful.GetManager().RunWithCancel(taskQueue)
return nil
}

6
services/webhook/deliver.go
View File

@ -283,11 +283,11 @@ func Init() error {
},
}
hookQueue = queue.CreateUniqueQueue("webhook_sender", handler)
hookQueue = queue.CreateUniqueQueue(graceful.GetManager().ShutdownContext(), "webhook_sender", handler)
if hookQueue == nil {
return fmt.Errorf("Unable to create webhook_sender Queue")
return fmt.Errorf("unable to create webhook_sender queue")
}
go graceful.GetManager().RunWithShutdownFns(hookQueue.Run)
go graceful.GetManager().RunWithCancel(hookQueue)
go graceful.GetManager().RunWithShutdownContext(populateWebhookSendingQueue)