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This commit is contained in:
Sergiusz Urbaniak 2020-12-14 12:43:28 +01:00
parent 269295a414
commit 9f0440be0f
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669 changed files with 58447 additions and 20021 deletions
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27
vendor/k8s.io/client-go/tools/cache/reflector.go generated vendored
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@ -69,6 +69,8 @@ type Reflector struct {
// backoff manages backoff of ListWatch
backoffManager wait.BackoffManager
// initConnBackoffManager manages backoff the initial connection with the Watch calll of ListAndWatch.
initConnBackoffManager wait.BackoffManager
resyncPeriod time.Duration
// ShouldResync is invoked periodically and whenever it returns `true` the Store's Resync operation is invoked
@ -99,6 +101,15 @@ type Reflector struct {
watchErrorHandler WatchErrorHandler
}
// ResourceVersionUpdater is an interface that allows store implementation to
// track the current resource version of the reflector. This is especially
// important if storage bookmarks are enabled.
type ResourceVersionUpdater interface {
// UpdateResourceVersion is called each time current resource version of the reflector
// is updated.
UpdateResourceVersion(resourceVersion string)
}
// The WatchErrorHandler is called whenever ListAndWatch drops the
// connection with an error. After calling this handler, the informer
// will backoff and retry.
@ -166,10 +177,11 @@ func NewNamedReflector(name string, lw ListerWatcher, expectedType interface{},
// We used to make the call every 1sec (1 QPS), the goal here is to achieve ~98% traffic reduction when
// API server is not healthy. With these parameters, backoff will stop at [30,60) sec interval which is
// 0.22 QPS. If we don't backoff for 2min, assume API server is healthy and we reset the backoff.
backoffManager: wait.NewExponentialBackoffManager(800*time.Millisecond, 30*time.Second, 2*time.Minute, 2.0, 1.0, realClock),
resyncPeriod: resyncPeriod,
clock: realClock,
watchErrorHandler: WatchErrorHandler(DefaultWatchErrorHandler),
backoffManager: wait.NewExponentialBackoffManager(800*time.Millisecond, 30*time.Second, 2*time.Minute, 2.0, 1.0, realClock),
initConnBackoffManager: wait.NewExponentialBackoffManager(800*time.Millisecond, 30*time.Second, 2*time.Minute, 2.0, 1.0, realClock),
resyncPeriod: resyncPeriod,
clock: realClock,
watchErrorHandler: WatchErrorHandler(DefaultWatchErrorHandler),
}
r.setExpectedType(expectedType)
return r
@ -404,9 +416,9 @@ func (r *Reflector) ListAndWatch(stopCh <-chan struct{}) error {
// If this is "connection refused" error, it means that most likely apiserver is not responsive.
// It doesn't make sense to re-list all objects because most likely we will be able to restart
// watch where we ended.
// If that's the case wait and resend watch request.
// If that's the case begin exponentially backing off and resend watch request.
if utilnet.IsConnectionRefused(err) {
time.Sleep(time.Second)
<-r.initConnBackoffManager.Backoff().C()
continue
}
return err
@ -504,6 +516,9 @@ loop:
}
*resourceVersion = newResourceVersion
r.setLastSyncResourceVersion(newResourceVersion)
if rvu, ok := r.store.(ResourceVersionUpdater); ok {
rvu.UpdateResourceVersion(newResourceVersion)
}
eventCount++
}
}