diff --git a/staging/src/k8s.io/client-go/tools/cache/shared_informer.go b/staging/src/k8s.io/client-go/tools/cache/shared_informer.go index 3a3f538a155..73613561d29 100644 --- a/staging/src/k8s.io/client-go/tools/cache/shared_informer.go +++ b/staging/src/k8s.io/client-go/tools/cache/shared_informer.go @@ -368,6 +368,10 @@ func (s *sharedIndexInformer) SetWatchErrorHandler(handler WatchErrorHandler) er func (s *sharedIndexInformer) Run(stopCh <-chan struct{}) { defer utilruntime.HandleCrash() + if s.HasStarted() { + klog.Warningf("The sharedIndexInformer has started, run more than once is not allowed") + return + } fifo := NewDeltaFIFOWithOptions(DeltaFIFOOptions{ KnownObjects: s.indexer, EmitDeltaTypeReplaced: true, @@ -410,6 +414,12 @@ func (s *sharedIndexInformer) Run(stopCh <-chan struct{}) { s.controller.Run(stopCh) } +func (s *sharedIndexInformer) HasStarted() bool { + s.startedLock.Lock() + defer s.startedLock.Unlock() + return s.started +} + func (s *sharedIndexInformer) HasSynced() bool { s.startedLock.Lock() defer s.startedLock.Unlock()