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remove unused layer of loop structure in processorListener::run

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Also updated the comment inside processorListener::run, to restore
accuracy about how long the delay is.

Kubernetes-commit: d2ad469abbb1122cbbd772e15767817cd771f9f6
This commit is contained in:
Mike Spreitzer 2020-01-20 11:52:44 -05:00 committed by Kubernetes Publisher
parent 7f990bd4b1
commit cc22aafc1f
1 changed files with 14 additions and 23 deletions
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37
tools/cache/shared_informer.go vendored
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@ -25,7 +25,6 @@ import (
"k8s.io/apimachinery/pkg/util/clock"
utilruntime "k8s.io/apimachinery/pkg/util/runtime"
"k8s.io/apimachinery/pkg/util/wait"
"k8s.io/client-go/util/retry"
"k8s.io/utils/buffer"
"k8s.io/klog"
@ -700,34 +699,26 @@ func (p *processorListener) pop() {
func (p *processorListener) run() {
// this call blocks until the channel is closed. When a panic happens during the notification
// we will catch it, **the offending item will be skipped!**, and after a short delay (one minute)
// we will catch it, **the offending item will be skipped!**, and after a short delay (one second)
// the next notification will be attempted. This is usually better than the alternative of never
// delivering again.
stopCh := make(chan struct{})
wait.Until(func() {
// this gives us a few quick retries before a long pause and then a few more quick retries
err := wait.ExponentialBackoff(retry.DefaultRetry, func() (bool, error) {
for next := range p.nextCh {
switch notification := next.(type) {
case updateNotification:
p.handler.OnUpdate(notification.oldObj, notification.newObj)
case addNotification:
p.handler.OnAdd(notification.newObj)
case deleteNotification:
p.handler.OnDelete(notification.oldObj)
default:
utilruntime.HandleError(fmt.Errorf("unrecognized notification: %T", next))
}
for next := range p.nextCh {
switch notification := next.(type) {
case updateNotification:
p.handler.OnUpdate(notification.oldObj, notification.newObj)
case addNotification:
p.handler.OnAdd(notification.newObj)
case deleteNotification:
p.handler.OnDelete(notification.oldObj)
default:
utilruntime.HandleError(fmt.Errorf("unrecognized notification: %T", next))
}
// the only way to get here is if the p.nextCh is empty and closed
return true, nil
})
// the only way to get here is if the p.nextCh is empty and closed
if err == nil {
close(stopCh)
}
}, 1*time.Minute, stopCh)
// the only way to get here is if the p.nextCh is empty and closed
close(stopCh)
}, 1*time.Second, stopCh)
}
// shouldResync deterimines if the listener needs a resync. If the listener's resyncPeriod is 0,