kubernetes/staging/src/k8s.io/kube-aggregator/pkg/controllers/cache.go

// 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{ … }