Golang cache.SharedIndexInformer类代码示例

func NewPodGC(kubeClient clientset.Interface, podInformer cache.SharedIndexInformer, terminatedPodThreshold int) *PodGCController {
	if kubeClient != nil && kubeClient.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("gc_controller", kubeClient.Core().RESTClient().GetRateLimiter())
	}
	gcc := &PodGCController{
		kubeClient:             kubeClient,
		terminatedPodThreshold: terminatedPodThreshold,
		deletePod: func(namespace, name string) error {
			glog.Infof("PodGC is force deleting Pod: %v:%v", namespace, name)
			return kubeClient.Core().Pods(namespace).Delete(name, v1.NewDeleteOptions(0))
		},
	}

	gcc.podStore.Indexer = podInformer.GetIndexer()
	gcc.podController = podInformer.GetController()

	gcc.nodeStore.Store, gcc.nodeController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options v1.ListOptions) (runtime.Object, error) {
				return gcc.kubeClient.Core().Nodes().List(options)
			},
			WatchFunc: func(options v1.ListOptions) (watch.Interface, error) {
				return gcc.kubeClient.Core().Nodes().Watch(options)
			},
		},
		&v1.Node{},
		controller.NoResyncPeriodFunc(),
		cache.ResourceEventHandlerFuncs{},
	)

	return gcc
}

// wait for the podInformer to observe the pods. Call this function before
// running the RS controller to prevent the rc manager from creating new pods
// rather than adopting the existing ones.
func waitToObservePods(t *testing.T, podInformer cache.SharedIndexInformer, podNum int) {
	if err := wait.PollImmediate(2*time.Second, 60*time.Second, func() (bool, error) {
		objects := podInformer.GetIndexer().List()
		if len(objects) == podNum {
			return true, nil
		}
		return false, nil
	}); err != nil {
		t.Fatal(err)
	}
}

func NewJobController(podInformer cache.SharedIndexInformer, jobInformer informers.JobInformer, kubeClient clientset.Interface) *JobController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	// TODO: remove the wrapper when every clients have moved to use the clientset.
	eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: kubeClient.Core().Events("")})

	if kubeClient != nil && kubeClient.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("job_controller", kubeClient.Core().RESTClient().GetRateLimiter())
	}

	jm := &JobController{
		kubeClient: kubeClient,
		podControl: controller.RealPodControl{
			KubeClient: kubeClient,
			Recorder:   eventBroadcaster.NewRecorder(v1.EventSource{Component: "job-controller"}),
		},
		expectations: controller.NewControllerExpectations(),
		queue:        workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "job"),
		recorder:     eventBroadcaster.NewRecorder(v1.EventSource{Component: "job-controller"}),
	}

	jobInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc: jm.enqueueController,
		UpdateFunc: func(old, cur interface{}) {
			if job := cur.(*batch.Job); !IsJobFinished(job) {
				jm.enqueueController(job)
			}
		},
		DeleteFunc: jm.enqueueController,
	})
	jm.jobLister = jobInformer.Lister()
	jm.jobStoreSynced = jobInformer.Informer().HasSynced

	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    jm.addPod,
		UpdateFunc: jm.updatePod,
		DeleteFunc: jm.deletePod,
	})
	jm.podStore.Indexer = podInformer.GetIndexer()
	jm.podStoreSynced = podInformer.HasSynced

	jm.updateHandler = jm.updateJobStatus
	jm.syncHandler = jm.syncJob
	return jm
}

// newReplicationManager configures a replication manager with the specified event recorder
func newReplicationManager(eventRecorder record.EventRecorder, podInformer cache.SharedIndexInformer, kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int, lookupCacheSize int, garbageCollectorEnabled bool) *ReplicationManager {
	if kubeClient != nil && kubeClient.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("replication_controller", kubeClient.Core().RESTClient().GetRateLimiter())
	}

	rm := &ReplicationManager{
		kubeClient: kubeClient,
		podControl: controller.RealPodControl{
			KubeClient: kubeClient,
			Recorder:   eventRecorder,
		},
		burstReplicas: burstReplicas,
		expectations:  controller.NewUIDTrackingControllerExpectations(controller.NewControllerExpectations()),
		queue:         workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "replicationmanager"),
		garbageCollectorEnabled: garbageCollectorEnabled,
	}

	rm.rcStore.Indexer, rm.rcController = cache.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return rm.kubeClient.Core().ReplicationControllers(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return rm.kubeClient.Core().ReplicationControllers(api.NamespaceAll).Watch(options)
			},
		},
		&api.ReplicationController{},
		// TODO: Can we have much longer period here?
		FullControllerResyncPeriod,
		cache.ResourceEventHandlerFuncs{
			AddFunc:    rm.enqueueController,
			UpdateFunc: rm.updateRC,
			// This will enter the sync loop and no-op, because the controller has been deleted from the store.
			// Note that deleting a controller immediately after scaling it to 0 will not work. The recommended
			// way of achieving this is by performing a `stop` operation on the controller.
			DeleteFunc: rm.enqueueController,
		},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc: rm.addPod,
		// This invokes the rc for every pod change, eg: host assignment. Though this might seem like overkill
		// the most frequent pod update is status, and the associated rc will only list from local storage, so
		// it should be ok.
		UpdateFunc: rm.updatePod,
		DeleteFunc: rm.deletePod,
	})
	rm.podStore.Indexer = podInformer.GetIndexer()
	rm.podController = podInformer.GetController()

	rm.syncHandler = rm.syncReplicationController
	rm.podStoreSynced = rm.podController.HasSynced
	rm.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return rm
}

// NewPetSetController creates a new petset controller.
func NewPetSetController(podInformer cache.SharedIndexInformer, kubeClient internalclientset.Interface, resyncPeriod time.Duration) *PetSetController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})
	recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "petset"})
	pc := &apiServerPetClient{kubeClient, recorder, &defaultPetHealthChecker{}}

	psc := &PetSetController{
		kubeClient:       kubeClient,
		blockingPetStore: newUnHealthyPetTracker(pc),
		newSyncer: func(blockingPet *pcb) *petSyncer {
			return &petSyncer{pc, blockingPet}
		},
		queue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "petset"),
	}

	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		// lookup the petset and enqueue
		AddFunc: psc.addPod,
		// lookup current and old petset if labels changed
		UpdateFunc: psc.updatePod,
		// lookup petset accounting for deletion tombstones
		DeleteFunc: psc.deletePod,
	})
	psc.podStore.Indexer = podInformer.GetIndexer()
	psc.podController = podInformer.GetController()

	psc.psStore.Store, psc.psController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return psc.kubeClient.Apps().PetSets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return psc.kubeClient.Apps().PetSets(api.NamespaceAll).Watch(options)
			},
		},
		&apps.PetSet{},
		petSetResyncPeriod,
		cache.ResourceEventHandlerFuncs{
			AddFunc: psc.enqueuePetSet,
			UpdateFunc: func(old, cur interface{}) {
				oldPS := old.(*apps.PetSet)
				curPS := cur.(*apps.PetSet)
				if oldPS.Status.Replicas != curPS.Status.Replicas {
					glog.V(4).Infof("Observed updated replica count for PetSet: %v, %d->%d", curPS.Name, oldPS.Status.Replicas, curPS.Status.Replicas)
				}
				psc.enqueuePetSet(cur)
			},
			DeleteFunc: psc.enqueuePetSet,
		},
	)
	// TODO: Watch volumes
	psc.podStoreSynced = psc.podController.HasSynced
	psc.syncHandler = psc.Sync
	return psc
}

// NewReplicationManager configures a replication manager with the specified event recorder
func NewReplicationManager(podInformer, rcInformer cache.SharedIndexInformer, kubeClient clientset.Interface, burstReplicas int, lookupCacheSize int, garbageCollectorEnabled bool) *ReplicationManager {
	if kubeClient != nil && kubeClient.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("replication_controller", kubeClient.Core().RESTClient().GetRateLimiter())
	}

	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(&v1core.EventSinkImpl{Interface: kubeClient.Core().Events("")})

	rm := &ReplicationManager{
		kubeClient: kubeClient,
		podControl: controller.RealPodControl{
			KubeClient: kubeClient,
			Recorder:   eventBroadcaster.NewRecorder(v1.EventSource{Component: "replication-controller"}),
		},
		burstReplicas: burstReplicas,
		expectations:  controller.NewUIDTrackingControllerExpectations(controller.NewControllerExpectations()),
		queue:         workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "replicationmanager"),
		garbageCollectorEnabled: garbageCollectorEnabled,
	}

	rcInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    rm.enqueueController,
		UpdateFunc: rm.updateRC,
		// This will enter the sync loop and no-op, because the controller has been deleted from the store.
		// Note that deleting a controller immediately after scaling it to 0 will not work. The recommended
		// way of achieving this is by performing a `stop` operation on the controller.
		DeleteFunc: rm.enqueueController,
	})
	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc: rm.addPod,
		// This invokes the rc for every pod change, eg: host assignment. Though this might seem like overkill
		// the most frequent pod update is status, and the associated rc will only list from local storage, so
		// it should be ok.
		UpdateFunc: rm.updatePod,
		DeleteFunc: rm.deletePod,
	})

	rm.syncHandler = rm.syncReplicationController
	rm.rcLister.Indexer = rcInformer.GetIndexer()
	rm.podLister.Indexer = podInformer.GetIndexer()
	rm.podListerSynced = podInformer.HasSynced
	rm.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return rm
}

// NewDeploymentTriggerController returns a new DeploymentTriggerController.
func NewDeploymentTriggerController(dcInformer, rcInformer, streamInformer cache.SharedIndexInformer, oc osclient.Interface, codec runtime.Codec) *DeploymentTriggerController {
	c := &DeploymentTriggerController{
		dn: oc,

		queue: workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),

		codec: codec,
	}

	dcInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    c.addDeploymentConfig,
		UpdateFunc: c.updateDeploymentConfig,
	})
	streamInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    c.addImageStream,
		UpdateFunc: c.updateImageStream,
	})

	c.dcLister.Indexer = dcInformer.GetIndexer()
	c.rcLister.Indexer = rcInformer.GetIndexer()
	c.dcListerSynced = dcInformer.HasSynced
	c.rcListerSynced = rcInformer.HasSynced
	return c
}

// NewEndpointController returns a new *EndpointController.
func NewEndpointController(podInformer cache.SharedIndexInformer, client clientset.Interface) *EndpointController {
	if client != nil && client.Core().GetRESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("endpoint_controller", client.Core().GetRESTClient().GetRateLimiter())
	}
	e := &EndpointController{
		client: client,
		queue:  workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "endpoint"),
	}

	e.serviceStore.Indexer, e.serviceController = cache.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return e.client.Core().Services(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return e.client.Core().Services(api.NamespaceAll).Watch(options)
			},
		},
		&api.Service{},
		// TODO: Can we have much longer period here?
		FullServiceResyncPeriod,
		cache.ResourceEventHandlerFuncs{
			AddFunc: e.enqueueService,
			UpdateFunc: func(old, cur interface{}) {
				e.enqueueService(cur)
			},
			DeleteFunc: e.enqueueService,
		},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    e.addPod,
		UpdateFunc: e.updatePod,
		DeleteFunc: e.deletePod,
	})
	e.podStore.Indexer = podInformer.GetIndexer()
	e.podController = podInformer.GetController()
	e.podStoreSynced = podInformer.HasSynced

	return e
}

func NewDisruptionController(podInformer cache.SharedIndexInformer, kubeClient internalclientset.Interface) *DisruptionController {
	dc := &DisruptionController{
		kubeClient:    kubeClient,
		podController: podInformer.GetController(),
		queue:         workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "disruption"),
		recheckQueue:  workqueue.NewNamedDelayingQueue("disruption-recheck"),
		broadcaster:   record.NewBroadcaster(),
	}
	dc.recorder = dc.broadcaster.NewRecorder(api.EventSource{Component: "controllermanager"})

	dc.getUpdater = func() updater { return dc.writePdbStatus }

	dc.podLister.Indexer = podInformer.GetIndexer()

	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    dc.addPod,
		UpdateFunc: dc.updatePod,
		DeleteFunc: dc.deletePod,
	})

	dc.pdbStore, dc.pdbController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return dc.kubeClient.Policy().PodDisruptionBudgets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return dc.kubeClient.Policy().PodDisruptionBudgets(api.NamespaceAll).Watch(options)
			},
		},
		&policy.PodDisruptionBudget{},
		30*time.Second,
		cache.ResourceEventHandlerFuncs{
			AddFunc:    dc.addDb,
			UpdateFunc: dc.updateDb,
			DeleteFunc: dc.removeDb,
		},
	)
	dc.pdbLister.Store = dc.pdbStore

	dc.rcIndexer, dc.rcController = cache.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return dc.kubeClient.Core().ReplicationControllers(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return dc.kubeClient.Core().ReplicationControllers(api.NamespaceAll).Watch(options)
			},
		},
		&api.ReplicationController{},
		30*time.Second,
		cache.ResourceEventHandlerFuncs{},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	dc.rcLister.Indexer = dc.rcIndexer

	dc.rsLister.Indexer, dc.rsController = cache.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return dc.kubeClient.Extensions().ReplicaSets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return dc.kubeClient.Extensions().ReplicaSets(api.NamespaceAll).Watch(options)
			},
		},
		&extensions.ReplicaSet{},
		30*time.Second,
		cache.ResourceEventHandlerFuncs{},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)
	dc.rsStore = dc.rsLister.Indexer

	dc.dIndexer, dc.dController = cache.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return dc.kubeClient.Extensions().Deployments(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return dc.kubeClient.Extensions().Deployments(api.NamespaceAll).Watch(options)
			},
		},
		&extensions.Deployment{},
		30*time.Second,
		cache.ResourceEventHandlerFuncs{},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	dc.dLister.Indexer = dc.dIndexer

	return dc
}

// NewNodeController returns a new node controller to sync instances from cloudprovider.
// This method returns an error if it is unable to initialize the CIDR bitmap with
// podCIDRs it has already allocated to nodes. Since we don't allow podCIDR changes
// currently, this should be handled as a fatal error.
func NewNodeController(
	podInformer cache.SharedIndexInformer,
	cloud cloudprovider.Interface,
	kubeClient clientset.Interface,
	podEvictionTimeout time.Duration,
	evictionLimiterQPS float32,
	secondaryEvictionLimiterQPS float32,
	largeClusterThreshold int32,
	unhealthyZoneThreshold float32,
	nodeMonitorGracePeriod time.Duration,
	nodeStartupGracePeriod time.Duration,
	nodeMonitorPeriod time.Duration,
	clusterCIDR *net.IPNet,
	serviceCIDR *net.IPNet,
	nodeCIDRMaskSize int,
	allocateNodeCIDRs bool) (*NodeController, error) {
	eventBroadcaster := record.NewBroadcaster()
	recorder := eventBroadcaster.NewRecorder(api.EventSource{Component: "controllermanager"})
	eventBroadcaster.StartLogging(glog.Infof)
	if kubeClient != nil {
		glog.V(0).Infof("Sending events to api server.")
		eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})
	} else {
		glog.V(0).Infof("No api server defined - no events will be sent to API server.")
	}

	if kubeClient != nil && kubeClient.Core().GetRESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("node_controller", kubeClient.Core().GetRESTClient().GetRateLimiter())
	}

	if allocateNodeCIDRs {
		if clusterCIDR == nil {
			glog.Fatal("NodeController: Must specify clusterCIDR if allocateNodeCIDRs == true.")
		}
		mask := clusterCIDR.Mask
		if maskSize, _ := mask.Size(); maskSize > nodeCIDRMaskSize {
			glog.Fatal("NodeController: Invalid clusterCIDR, mask size of clusterCIDR must be less than nodeCIDRMaskSize.")
		}
	}

	nc := &NodeController{
		cloud:                       cloud,
		knownNodeSet:                make(map[string]*api.Node),
		kubeClient:                  kubeClient,
		recorder:                    recorder,
		podEvictionTimeout:          podEvictionTimeout,
		maximumGracePeriod:          5 * time.Minute,
		zonePodEvictor:              make(map[string]*RateLimitedTimedQueue),
		zoneTerminationEvictor:      make(map[string]*RateLimitedTimedQueue),
		nodeStatusMap:               make(map[string]nodeStatusData),
		nodeMonitorGracePeriod:      nodeMonitorGracePeriod,
		nodeMonitorPeriod:           nodeMonitorPeriod,
		nodeStartupGracePeriod:      nodeStartupGracePeriod,
		lookupIP:                    net.LookupIP,
		now:                         unversioned.Now,
		clusterCIDR:                 clusterCIDR,
		serviceCIDR:                 serviceCIDR,
		allocateNodeCIDRs:           allocateNodeCIDRs,
		forcefullyDeletePod:         func(p *api.Pod) error { return forcefullyDeletePod(kubeClient, p) },
		nodeExistsInCloudProvider:   func(nodeName string) (bool, error) { return nodeExistsInCloudProvider(cloud, nodeName) },
		evictionLimiterQPS:          evictionLimiterQPS,
		secondaryEvictionLimiterQPS: secondaryEvictionLimiterQPS,
		largeClusterThreshold:       largeClusterThreshold,
		unhealthyZoneThreshold:      unhealthyZoneThreshold,
		zoneStates:                  make(map[string]zoneState),
	}
	nc.enterPartialDisruptionFunc = nc.ReducedQPSFunc
	nc.enterFullDisruptionFunc = nc.HealthyQPSFunc
	nc.computeZoneStateFunc = nc.ComputeZoneState

	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    nc.maybeDeleteTerminatingPod,
		UpdateFunc: func(_, obj interface{}) { nc.maybeDeleteTerminatingPod(obj) },
	})
	nc.podStore.Indexer = podInformer.GetIndexer()
	nc.podController = podInformer.GetController()

	nodeEventHandlerFuncs := cache.ResourceEventHandlerFuncs{}
	if nc.allocateNodeCIDRs {
		nodeEventHandlerFuncs = cache.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				node := obj.(*api.Node)
				err := nc.cidrAllocator.AllocateOrOccupyCIDR(node)
				if err != nil {
					glog.Errorf("Error allocating CIDR: %v", err)
				}
			},
			UpdateFunc: func(_, obj interface{}) {
				node := obj.(*api.Node)
				// If the PodCIDR is not empty we either:
				// - already processed a Node that already had a CIDR after NC restarted
				//   (cidr is marked as used),
				// - already processed a Node successfully and allocated a CIDR for it
				//   (cidr is marked as used),
				// - already processed a Node but we did saw a "timeout" response and
				//   request eventually got through in this case we haven't released
//.........这里部分代码省略.........

func NewDaemonSetsController(podInformer cache.SharedIndexInformer, kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, lookupCacheSize int) *DaemonSetsController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	// TODO: remove the wrapper when every clients have moved to use the clientset.
	eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})

	if kubeClient != nil && kubeClient.Core().GetRESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("daemon_controller", kubeClient.Core().GetRESTClient().GetRateLimiter())
	}
	dsc := &DaemonSetsController{
		kubeClient:    kubeClient,
		eventRecorder: eventBroadcaster.NewRecorder(api.EventSource{Component: "daemonset-controller"}),
		podControl: controller.RealPodControl{
			KubeClient: kubeClient,
			Recorder:   eventBroadcaster.NewRecorder(api.EventSource{Component: "daemon-set"}),
		},
		burstReplicas: BurstReplicas,
		expectations:  controller.NewControllerExpectations(),
		queue:         workqueue.NewNamed("daemonset"),
	}
	// Manage addition/update of daemon sets.
	dsc.dsStore.Store, dsc.dsController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return dsc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return dsc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).Watch(options)
			},
		},
		&extensions.DaemonSet{},
		// TODO: Can we have much longer period here?
		FullDaemonSetResyncPeriod,
		cache.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				ds := obj.(*extensions.DaemonSet)
				glog.V(4).Infof("Adding daemon set %s", ds.Name)
				dsc.enqueueDaemonSet(ds)
			},
			UpdateFunc: func(old, cur interface{}) {
				oldDS := old.(*extensions.DaemonSet)
				curDS := cur.(*extensions.DaemonSet)
				// We should invalidate the whole lookup cache if a DS's selector has been updated.
				//
				// Imagine that you have two RSs:
				// * old DS1
				// * new DS2
				// You also have a pod that is attached to DS2 (because it doesn't match DS1 selector).
				// Now imagine that you are changing DS1 selector so that it is now matching that pod,
				// in such case we must invalidate the whole cache so that pod could be adopted by DS1
				//
				// This makes the lookup cache less helpful, but selector update does not happen often,
				// so it's not a big problem
				if !reflect.DeepEqual(oldDS.Spec.Selector, curDS.Spec.Selector) {
					dsc.lookupCache.InvalidateAll()
				}

				glog.V(4).Infof("Updating daemon set %s", oldDS.Name)
				dsc.enqueueDaemonSet(curDS)
			},
			DeleteFunc: dsc.deleteDaemonset,
		},
	)

	// Watch for creation/deletion of pods. The reason we watch is that we don't want a daemon set to create/delete
	// more pods until all the effects (expectations) of a daemon set's create/delete have been observed.
	podInformer.AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    dsc.addPod,
		UpdateFunc: dsc.updatePod,
		DeleteFunc: dsc.deletePod,
	})
	dsc.podStore.Indexer = podInformer.GetIndexer()
	dsc.podController = podInformer.GetController()
	dsc.podStoreSynced = podInformer.HasSynced

	// Watch for new nodes or updates to nodes - daemon pods are launched on new nodes, and possibly when labels on nodes change,
	dsc.nodeStore.Store, dsc.nodeController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return dsc.kubeClient.Core().Nodes().List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return dsc.kubeClient.Core().Nodes().Watch(options)
			},
		},
		&api.Node{},
		resyncPeriod(),
		cache.ResourceEventHandlerFuncs{
			AddFunc:    dsc.addNode,
			UpdateFunc: dsc.updateNode,
		},
	)
	dsc.syncHandler = dsc.syncDaemonSet
	dsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return dsc
}