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In disk_channel queues synchronously push to disk on shutdown (#18415) (#18788)

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Partial Backport of #18415

Instead of using an asynchronous goroutine to push to disk on shutdown
just close the datachan and immediately push to the disk.

Prevents messages of incompletely flushed queues.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
zeripath 2022-02-22 12:08:35 +00:00 committed by GitHub
parent 86c3481eff
commit 382101ecc7
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GPG key ID: 4AEE18F83AFDEB23
4 changed files with 12 additions and 12 deletions
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8
modules/queue/queue_bytefifo.go
View file

@ -195,9 +195,11 @@ loop:
}
}
var errQueueEmpty = fmt.Errorf("empty queue")
var errEmptyBytes = fmt.Errorf("empty bytes")
var errUnmarshal = fmt.Errorf("failed to unmarshal")
var (
errQueueEmpty = fmt.Errorf("empty queue")
errEmptyBytes = fmt.Errorf("empty bytes")
errUnmarshal = fmt.Errorf("failed to unmarshal")
)
func (q *ByteFIFOQueue) doPop() error {
q.lock.Lock()

2
modules/queue/queue_disk_channel.go
View file

@ -251,8 +251,8 @@ func (q *PersistableChannelQueue) Shutdown() {
q.channelQueue.Wait()
q.internal.(*LevelQueue).Wait()
// Redirect all remaining data in the chan to the internal channel
close(q.channelQueue.dataChan)
log.Trace("PersistableChannelQueue: %s Redirecting remaining data", q.delayedStarter.name)
close(q.channelQueue.dataChan)
for data := range q.channelQueue.dataChan {
_ = q.internal.Push(data)
atomic.AddInt64(&q.channelQueue.numInQueue, -1)

1
modules/queue/queue_disk_channel_test.go
View file

@ -188,5 +188,4 @@ func TestPersistableChannelQueue(t *testing.T) {
for _, callback := range callbacks {
callback()
}
}

3
modules/queue/unique_queue_disk_channel.go
View file

@ -238,13 +238,12 @@ func (q *PersistableChannelUniqueQueue) Shutdown() {
q.channelQueue.Wait()
q.internal.(*LevelUniqueQueue).Wait()
// Redirect all remaining data in the chan to the internal channel
go func() {
close(q.channelQueue.dataChan)
log.Trace("PersistableChannelUniqueQueue: %s Redirecting remaining data", q.delayedStarter.name)
for data := range q.channelQueue.dataChan {
_ = q.internal.Push(data)
}
log.Trace("PersistableChannelUniqueQueue: %s Done Redirecting remaining data", q.delayedStarter.name)
}()
log.Debug("PersistableChannelUniqueQueue: %s Shutdown", q.delayedStarter.name)
}