// into channels.
	go func(stopCh <-chan struct{}) {
		for {
			nodeUpdate, shutdown := tc.nodeUpdateQueue.Get()
			if shutdown {
				break
			}
			hash := hash(nodeUpdate.nodeName, UpdateWorkerSize)
			select {
			case <-stopCh:
				tc.nodeUpdateQueue.Done(nodeUpdate)
				return
			case tc.nodeUpdateChannels[hash] <- nodeUpdate:

		if features.LocalClusterSecretWatcher && features.ExternalIstiod {
			c.secrets.Start(stopCh)
		}
		if !kube.WaitForCacheSync("multicluster remote secrets", stopCh, c.secrets.HasSynced) {
			return
		}
		log.Infof("multicluster remote secrets controller cache synced in %v", time.Since(t0))
		c.queue.Run(stopCh)
		c.handleDelete(c.configClusterID)
	}()
	return nil
}

	c, informers, err := f.newController(ctx)
	if err != nil {
		f.t.Fatalf("error creating Deployment controller: %v", err)
	}
	if startInformers {
		stopCh := make(chan struct{})
		defer close(stopCh)
		informers.Start(stopCh)
	}

	err = c.syncDeployment(ctx, deploymentName)
	if !expectError && err != nil {
		f.t.Errorf("error syncing deployment: %v", err)
	} else if expectError && err == nil {

	// Register the metrics we defined above with prometheus.
	customMetricRegistry.MustRegister(etcdVersion)

	// Spawn threads for periodically scraping etcd version metrics.
	stopCh := make(chan struct{})
	defer close(stopCh)
	go getVersionPeriodically(stopCh)

	// Serve our metrics on listenAddress/metricsPath.
	klog.Infof("Listening on: %v", listenAddress)
	http.Handle(metricsPath, metrics.HandlerFor(gatherer, metrics.HandlerOpts{}))

}

// Run starts the controller.
func (c *ConditionController) Run(workers int, stopCh <-chan struct{}) {
	defer utilruntime.HandleCrash()
	defer c.queue.ShutDown()

	klog.Infof("Starting NonStructuralSchemaConditionController")
	defer klog.Infof("Shutting down NonStructuralSchemaConditionController")

	if !cache.WaitForCacheSync(stopCh, c.crdSynced) {
		return
	}

	for i := 0; i < workers; i++ {

func (c *Controller) Run(openAPIV3Service *handler3.OpenAPIService, stopCh <-chan struct{}) {
	defer utilruntime.HandleCrash()
	defer c.queue.ShutDown()
	defer klog.Infof("Shutting down OpenAPI V3 controller")

	klog.Infof("Starting OpenAPI V3 controller")

	c.openAPIV3Service = openAPIV3Service

	if !cache.WaitForCacheSync(stopCh, c.crdsSynced) {
		utilruntime.HandleError(fmt.Errorf("timed out waiting for caches to sync"))

			serverConcurrency, plConcurrencyShares, plConcurrency = 1, 1, 1
		)

		apfConfiguration := newConfiguration(fsName, plName, userName, plConcurrencyShares, 0)
		stopCh := make(chan struct{})
		controller, controllerCompletedCh := startAPFController(t, stopCh, apfConfiguration, serverConcurrency, plName, plConcurrency)

		headerMatcher := headerMatcher{}
		// we will raise a panic for the first request.

	pods           kclient.Client[*corev1.Pod]
	services       kclient.Client[*corev1.Service]
	nodes          kclient.Client[*corev1.Node]
}

// Run the syncer until stopCh is closed
func (s *StatusSyncer) Run(stopCh <-chan struct{}) {
	s.queue.Run(stopCh)
	controllers.ShutdownAll(s.services, s.nodes, s.pods, s.ingressClasses, s.ingresses)
}

// NewStatusSyncer creates a new instance

	// start the loop that watches the cert and key files until stopCh is closed.
	go wait.Until(func() {
		if err := c.watchCertKeyFile(ctx.Done()); err != nil {
			klog.ErrorS(err, "Failed to watch cert and key file, will retry later")
		}
	}, time.Minute, ctx.Done())

	<-ctx.Done()
}

func (c *DynamicCertKeyPairContent) watchCertKeyFile(stopCh <-chan struct{}) error {

		go wait.Until(c.runWorker, time.Second, stopCh)
	}

	// wait until we're told to stop
	<-stopCh
}

// WaitForInitialSync blocks until the initial set of CRD resources has been processed
func (c *crdRegistrationController) WaitForInitialSync() {
	<-c.syncedInitialSet
}

func (c *crdRegistrationController) runWorker() {