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Pause event loop while FETCHing to prevetn EXPUNGE

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This commit is contained in:
Michal Horejsek
2020-07-23 09:09:52 +02:00
parent 9d65192ad7
commit 2269a9edb7
6 changed files with 33 additions and 5 deletions
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12
internal/store/event_loop.go
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@ -38,7 +38,8 @@ type eventLoop struct {
pollCh chan chan struct{}
stopCh chan struct{}
notifyStopCh chan struct{}
isRunning bool
isRunning bool // The whole event loop is running.
isTickerPaused bool // The periodic loop is paused (but the event loop itself is still running).
hasInternet bool
pollCounter int
@ -59,6 +60,7 @@ func newEventLoop(cache *Cache, store *Store, user BridgeUser, events listener.L
currentEventID: cache.getEventID(user.ID()),
pollCh: make(chan chan struct{}),
isRunning: false,
isTickerPaused: false,
log: eventLog,
@ -68,10 +70,6 @@ func newEventLoop(cache *Cache, store *Store, user BridgeUser, events listener.L
}
}
func (loop *eventLoop) IsRunning() bool {
return loop.isRunning
}
func (loop *eventLoop) client() pmapi.Client {
return loop.store.client()
}
@ -156,6 +154,10 @@ func (loop *eventLoop) loop() {
close(loop.notifyStopCh)
return
case <-t.C:
if loop.isTickerPaused {
loop.log.Trace("Event loop paused, skipping")
continue
}
// Randomise periodic calls within range pollInterval ± pollSpread to reduces potential load spikes on API.
time.Sleep(time.Duration(rand.Intn(2*int(pollIntervalSpread.Milliseconds()))) * time.Millisecond)
case eventProcessedCh = <-loop.pollCh: