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[kubernetes] ignore empty endpoint changes

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This commit is contained in:
Henning 2021-04-29 16:20:03 +02:00 • committed by GitHub
parent 0624cefc10
commit ab71dad51a
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5 changed files with 707 additions and 54 deletions
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29
pkg/provider/kubernetes/crd/client.go
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@ -12,6 +12,7 @@ import (
"github.com/traefik/traefik/v2/pkg/provider/kubernetes/crd/generated/clientset/versioned"
"github.com/traefik/traefik/v2/pkg/provider/kubernetes/crd/generated/informers/externalversions"
"github.com/traefik/traefik/v2/pkg/provider/kubernetes/crd/traefik/v1alpha1"
"github.com/traefik/traefik/v2/pkg/provider/kubernetes/k8s"
"github.com/traefik/traefik/v2/pkg/version"
corev1 "k8s.io/api/core/v1"
kubeerror "k8s.io/apimachinery/pkg/api/errors"
@ -25,22 +26,6 @@ import (
const resyncPeriod = 10 * time.Minute
type resourceEventHandler struct {
ev chan<- interface{}
}
func (reh *resourceEventHandler) OnAdd(obj interface{}) {
eventHandlerFunc(reh.ev, obj)
}
func (reh *resourceEventHandler) OnUpdate(oldObj, newObj interface{}) {
eventHandlerFunc(reh.ev, newObj)
}
func (reh *resourceEventHandler) OnDelete(obj interface{}) {
eventHandlerFunc(reh.ev, obj)
}
// Client is a client for the Provider master.
// WatchAll starts the watch of the Provider resources and updates the stores.
// The stores can then be accessed via the Get* functions.
@ -160,7 +145,7 @@ func newExternalClusterClient(endpoint, token, caFilePath string) (*clientWrappe
// WatchAll starts namespace-specific controllers for all relevant kinds.
func (c *clientWrapper) WatchAll(namespaces []string, stopCh <-chan struct{}) (<-chan interface{}, error) {
eventCh := make(chan interface{}, 1)
eventHandler := &resourceEventHandler{ev: eventCh}
eventHandler := &k8s.ResourceEventHandler{Ev: eventCh}
if len(namespaces) == 0 {
namespaces = []string{metav1.NamespaceAll}
@ -402,16 +387,6 @@ func (c *clientWrapper) lookupNamespace(ns string) string {
return ns
}
// eventHandlerFunc will pass the obj on to the events channel or drop it.
// This is so passing the events along won't block in the case of high volume.
// The events are only used for signaling anyway so dropping a few is ok.
func eventHandlerFunc(events chan<- interface{}, obj interface{}) {
select {
case events <- obj:
default:
}
}
// translateNotFoundError will translate a "not found" error to a boolean return
// value which indicates if the resource exists and a nil error.
func translateNotFoundError(err error) (bool, error) {