| /* |
| Copyright 2017 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package controllers |
| |
| import ( |
| "fmt" |
| |
| "k8s.io/klog" |
| |
| utilruntime "k8s.io/apimachinery/pkg/util/runtime" |
| "k8s.io/client-go/tools/cache" |
| ) |
| |
| // WaitForCacheSync is a wrapper around cache.WaitForCacheSync that generates log messages |
| // indicating that the controller identified by controllerName is waiting for syncs, followed by |
| // either a successful or failed sync. |
| func WaitForCacheSync(controllerName string, stopCh <-chan struct{}, cacheSyncs ...cache.InformerSynced) bool { |
| klog.Infof("Waiting for caches to sync for %s controller", controllerName) |
| |
| if !cache.WaitForCacheSync(stopCh, cacheSyncs...) { |
| utilruntime.HandleError(fmt.Errorf("Unable to sync caches for %s controller", controllerName)) |
| return false |
| } |
| |
| klog.Infof("Caches are synced for %s controller", controllerName) |
| return true |
| } |