Queue manager FlushAll can loop rapidly - add delay (#15733) (#15840)

Backport #15733

* Queue manager FlushAll can loop rapidly - add delay

Add delay within FlushAll to prevent rapid loop when workers are busy

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

* as per lunny

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2021-05-12 18:48:11 +01:00 committed by GitHub
parent 3ae1d7a59f
commit 332eb2f6d2
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1 changed files with 9 additions and 6 deletions

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@ -198,17 +198,20 @@ func (m *Manager) FlushAll(baseCtx context.Context, timeout time.Duration) error
wg.Done()
}(mq)
} else {
log.Debug("Queue: %s is non-empty but is not flushable - adding 100 millisecond wait", mq.Name)
go func() {
<-time.After(100 * time.Millisecond)
wg.Done()
}()
log.Debug("Queue: %s is non-empty but is not flushable", mq.Name)
wg.Done()
}
}
if allEmpty {
log.Debug("All queues are empty")
break
}
// Ensure there are always at least 100ms between loops but not more if we've actually been doing some flushign
// but don't delay cancellation here.
select {
case <-ctx.Done():
case <-time.After(100 * time.Millisecond):
}
wg.Wait()
}
return nil