mirror of
https://codeberg.org/forgejo/forgejo.git
synced 2024-09-10 12:12:32 +02:00
Attempt to prevent the deadlock in the QueueDiskChannel Test again (#18415)
* Attempt to prevent the deadlock in the QueueDiskChannel Test again This time we're going to adjust the pause tests to only test the right flag. * Only switch off pushback once we know that we are not pushing anything else * Ensure full redirection occurs * More nicely handle a closed datachan * And handle similar problems in queue_channel_test Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
parent
726715fcfb
commit
92b715e0f2
7 changed files with 119 additions and 95 deletions
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@ -205,7 +205,10 @@ loop:
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// tell the pool to shutdown.
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q.baseCtxCancel()
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return
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case data := <-q.dataChan:
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case data, ok := <-q.dataChan:
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if !ok {
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return
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}
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if err := q.PushBack(data); err != nil {
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log.Error("Unable to push back data into queue %s", q.name)
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}
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@ -117,7 +117,10 @@ func (q *ChannelQueue) FlushWithContext(ctx context.Context) error {
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select {
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case <-paused:
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return nil
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case data := <-q.dataChan:
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case data, ok := <-q.dataChan:
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if !ok {
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return nil
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}
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if unhandled := q.handle(data); unhandled != nil {
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log.Error("Unhandled Data whilst flushing queue %d", q.qid)
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}
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@ -9,6 +9,7 @@ import (
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"testing"
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"time"
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"code.gitea.io/gitea/modules/log"
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"github.com/stretchr/testify/assert"
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)
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@ -111,7 +112,6 @@ func TestChannelQueue_Pause(t *testing.T) {
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if pausable, ok := queue.(Pausable); ok {
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pausable.Pause()
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}
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pushBack = false
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lock.Unlock()
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return data
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}
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@ -123,7 +123,9 @@ func TestChannelQueue_Pause(t *testing.T) {
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}
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return nil
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}
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nilFn := func(_ func()) {}
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queueShutdown := []func(){}
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queueTerminate := []func(){}
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queue, err = NewChannelQueue(handle,
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ChannelQueueConfiguration{
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@ -139,7 +141,34 @@ func TestChannelQueue_Pause(t *testing.T) {
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}, &testData{})
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assert.NoError(t, err)
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go queue.Run(nilFn, nilFn)
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go queue.Run(func(shutdown func()) {
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lock.Lock()
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defer lock.Unlock()
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queueShutdown = append(queueShutdown, shutdown)
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}, func(terminate func()) {
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lock.Lock()
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defer lock.Unlock()
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queueTerminate = append(queueTerminate, terminate)
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})
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// Shutdown and Terminate in defer
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defer func() {
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lock.Lock()
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callbacks := make([]func(), len(queueShutdown))
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copy(callbacks, queueShutdown)
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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}
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lock.Lock()
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log.Info("Finally terminating")
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callbacks = make([]func(), len(queueTerminate))
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copy(callbacks, queueTerminate)
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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}
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}()
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test1 := testData{"A", 1}
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test2 := testData{"B", 2}
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@ -155,14 +184,11 @@ func TestChannelQueue_Pause(t *testing.T) {
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pausable.Pause()
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paused, resumed := pausable.IsPausedIsResumed()
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paused, _ := pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-resumed:
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assert.Fail(t, "Queue should not be resumed")
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return
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue is not paused")
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return
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}
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@ -179,10 +205,11 @@ func TestChannelQueue_Pause(t *testing.T) {
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assert.Nil(t, result2)
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pausable.Resume()
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_, resumed := pausable.IsPausedIsResumed()
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select {
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case <-resumed:
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue should be resumed")
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}
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@ -199,47 +226,47 @@ func TestChannelQueue_Pause(t *testing.T) {
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pushBack = true
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lock.Unlock()
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paused, resumed = pausable.IsPausedIsResumed()
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_, resumed = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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assert.Fail(t, "Queue should not be paused")
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return
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case <-resumed:
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue is not resumed")
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return
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}
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queue.Push(&test1)
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paused, _ = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-handleChan:
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assert.Fail(t, "handler chan should not contain test1")
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return
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case <-time.After(500 * time.Millisecond):
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "queue should be paused")
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return
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}
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paused, resumed = pausable.IsPausedIsResumed()
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lock.Lock()
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pushBack = false
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lock.Unlock()
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paused, _ = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-resumed:
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assert.Fail(t, "Queue should not be resumed")
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return
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue is not paused")
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return
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}
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pausable.Resume()
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_, resumed = pausable.IsPausedIsResumed()
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select {
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case <-resumed:
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue should be resumed")
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}
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@ -313,14 +313,13 @@ func (q *PersistableChannelQueue) Shutdown() {
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q.channelQueue.Wait()
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q.internal.(*LevelQueue).Wait()
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// Redirect all remaining data in the chan to the internal channel
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go func() {
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log.Trace("PersistableChannelQueue: %s Redirecting remaining data", q.delayedStarter.name)
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for data := range q.channelQueue.dataChan {
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_ = q.internal.Push(data)
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atomic.AddInt64(&q.channelQueue.numInQueue, -1)
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}
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log.Trace("PersistableChannelQueue: %s Done Redirecting remaining data", q.delayedStarter.name)
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}()
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log.Trace("PersistableChannelQueue: %s Redirecting remaining data", q.delayedStarter.name)
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close(q.channelQueue.dataChan)
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for data := range q.channelQueue.dataChan {
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_ = q.internal.Push(data)
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atomic.AddInt64(&q.channelQueue.numInQueue, -1)
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}
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log.Trace("PersistableChannelQueue: %s Done Redirecting remaining data", q.delayedStarter.name)
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log.Debug("PersistableChannelQueue: %s Shutdown", q.delayedStarter.name)
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}
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@ -207,7 +207,6 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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log.Info("pausing")
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pausable.Pause()
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}
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pushBack = false
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lock.Unlock()
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return data
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}
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@ -248,6 +247,25 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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queueTerminate = append(queueTerminate, terminate)
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})
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// Shutdown and Terminate in defer
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defer func() {
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lock.Lock()
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callbacks := make([]func(), len(queueShutdown))
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copy(callbacks, queueShutdown)
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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}
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lock.Lock()
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log.Info("Finally terminating")
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callbacks = make([]func(), len(queueTerminate))
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copy(callbacks, queueTerminate)
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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}
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}()
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test1 := testData{"A", 1}
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test2 := testData{"B", 2}
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@ -263,14 +281,11 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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assert.Equal(t, test1.TestInt, result1.TestInt)
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pausable.Pause()
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paused, resumed := pausable.IsPausedIsResumed()
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paused, _ := pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-resumed:
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assert.Fail(t, "Queue should not be resumed")
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return
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue is not paused")
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return
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}
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@ -287,14 +302,11 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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assert.Nil(t, result2)
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pausable.Resume()
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paused, resumed = pausable.IsPausedIsResumed()
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_, resumed := pausable.IsPausedIsResumed()
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select {
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case <-paused:
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assert.Fail(t, "Queue should be resumed")
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return
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case <-resumed:
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue should be resumed")
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return
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}
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@ -308,24 +320,27 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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assert.Equal(t, test2.TestString, result2.TestString)
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assert.Equal(t, test2.TestInt, result2.TestInt)
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// Set pushBack to so that the next handle will result in a Pause
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lock.Lock()
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pushBack = true
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lock.Unlock()
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paused, resumed = pausable.IsPausedIsResumed()
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// Ensure that we're still resumed
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_, resumed = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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assert.Fail(t, "Queue should not be paused")
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return
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case <-resumed:
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default:
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case <-time.After(100 * time.Millisecond):
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assert.Fail(t, "Queue is not resumed")
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return
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}
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// push test1
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queue.Push(&test1)
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// Now as this is handled it should pause
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paused, _ = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-handleChan:
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@ -336,27 +351,16 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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return
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}
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paused, resumed = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-resumed:
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assert.Fail(t, "Queue should not be resumed")
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return
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default:
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assert.Fail(t, "Queue is not paused")
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return
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}
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lock.Lock()
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pushBack = false
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lock.Unlock()
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pausable.Resume()
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paused, resumed = pausable.IsPausedIsResumed()
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_, resumed = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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assert.Fail(t, "Queue should not be paused")
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return
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case <-resumed:
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default:
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case <-time.After(500 * time.Millisecond):
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assert.Fail(t, "Queue should be resumed")
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return
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}
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@ -373,6 +377,7 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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lock.Lock()
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callbacks := make([]func(), len(queueShutdown))
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copy(callbacks, queueShutdown)
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queueShutdown = queueShutdown[:0]
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lock.Unlock()
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// Now shutdown the queue
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for _, callback := range callbacks {
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@ -402,6 +407,7 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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lock.Lock()
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callbacks = make([]func(), len(queueTerminate))
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copy(callbacks, queueTerminate)
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queueShutdown = queueTerminate[:0]
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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@ -453,14 +459,11 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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case <-paused:
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}
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paused, resumed = pausable.IsPausedIsResumed()
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paused, _ = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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case <-resumed:
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assert.Fail(t, "Queue should not be resumed")
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return
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default:
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case <-time.After(500 * time.Millisecond):
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assert.Fail(t, "Queue is not paused")
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return
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}
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@ -472,14 +475,15 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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default:
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}
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lock.Lock()
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pushBack = false
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lock.Unlock()
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pausable.Resume()
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paused, resumed = pausable.IsPausedIsResumed()
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_, resumed = pausable.IsPausedIsResumed()
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select {
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case <-paused:
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assert.Fail(t, "Queue should not be paused")
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return
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case <-resumed:
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default:
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case <-time.After(500 * time.Millisecond):
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assert.Fail(t, "Queue should be resumed")
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return
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}
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@ -506,18 +510,4 @@ func TestPersistableChannelQueue_Pause(t *testing.T) {
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assert.Equal(t, test2.TestString, result4.TestString)
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assert.Equal(t, test2.TestInt, result4.TestInt)
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lock.Lock()
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callbacks = make([]func(), len(queueShutdown))
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copy(callbacks, queueShutdown)
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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}
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lock.Lock()
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callbacks = make([]func(), len(queueTerminate))
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copy(callbacks, queueTerminate)
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lock.Unlock()
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for _, callback := range callbacks {
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callback()
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}
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}
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@ -178,7 +178,10 @@ func (q *ChannelUniqueQueue) FlushWithContext(ctx context.Context) error {
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default:
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}
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select {
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case data := <-q.dataChan:
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case data, ok := <-q.dataChan:
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if !ok {
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return nil
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}
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if unhandled := q.handle(data); unhandled != nil {
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log.Error("Unhandled Data whilst flushing queue %d", q.qid)
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}
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@ -282,13 +282,12 @@ func (q *PersistableChannelUniqueQueue) Shutdown() {
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q.channelQueue.Wait()
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q.internal.(*LevelUniqueQueue).Wait()
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// Redirect all remaining data in the chan to the internal channel
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go func() {
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log.Trace("PersistableChannelUniqueQueue: %s Redirecting remaining data", q.delayedStarter.name)
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for data := range q.channelQueue.dataChan {
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_ = q.internal.Push(data)
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}
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log.Trace("PersistableChannelUniqueQueue: %s Done Redirecting remaining data", q.delayedStarter.name)
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}()
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close(q.channelQueue.dataChan)
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log.Trace("PersistableChannelUniqueQueue: %s Redirecting remaining data", q.delayedStarter.name)
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for data := range q.channelQueue.dataChan {
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_ = q.internal.Push(data)
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}
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log.Trace("PersistableChannelUniqueQueue: %s Done Redirecting remaining data", q.delayedStarter.name)
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log.Debug("PersistableChannelUniqueQueue: %s Shutdown", q.delayedStarter.name)
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}
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