Esempio n. 1
0
func NewJobController(podInformer framework.SharedIndexInformer, 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(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})

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

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

	jm.jobStore.Store, jm.jobController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return jm.kubeClient.Batch().Jobs(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return jm.kubeClient.Batch().Jobs(api.NamespaceAll).Watch(options)
			},
		},
		&batch.Job{},
		// TODO: Can we have much longer period here?
		replicationcontroller.FullControllerResyncPeriod,
		framework.ResourceEventHandlerFuncs{
			AddFunc: jm.enqueueController,
			UpdateFunc: func(old, cur interface{}) {
				if job := cur.(*batch.Job); !isJobFinished(job) {
					jm.enqueueController(job)
				}
			},
			DeleteFunc: jm.enqueueController,
		},
	)

	podInformer.AddEventHandler(framework.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
}
Esempio n. 2
0
// NewPetSetController creates a new petset controller.
func NewPetSetController(podInformer framework.SharedIndexInformer, kubeClient *client.Client, resyncPeriod time.Duration) *PetSetController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(kubeClient.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.New(),
	}

	podInformer.AddEventHandler(framework.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 = framework.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,
		framework.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
}
Esempio n. 3
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func (kd *KubeDNS) setServicesStore() {
	// Returns a cache.ListWatch that gets all changes to services.
	kd.servicesStore, kd.serviceController = kframework.NewInformer(
		&kcache.ListWatch{
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return kd.kubeClient.Core().Services(kapi.NamespaceAll).List(options)
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				return kd.kubeClient.Core().Services(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Service{},
		resyncPeriod,
		kframework.ResourceEventHandlerFuncs{
			AddFunc:    kd.newService,
			DeleteFunc: kd.removeService,
			UpdateFunc: kd.updateService,
		},
	)
}
// NewEndpointController returns a new *EndpointController.
func NewEndpointController(podInformer framework.SharedIndexInformer, client *clientset.Clientset) *EndpointController {
	if client != nil && client.Core().GetRESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("endpoint_controller", client.Core().GetRESTClient().GetRateLimiter())
	}
	e := &EndpointController{
		client: client,
		queue:  workqueue.New(),
	}

	e.serviceStore.Store, e.serviceController = framework.NewInformer(
		&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,
		framework.ResourceEventHandlerFuncs{
			AddFunc: e.enqueueService,
			UpdateFunc: func(old, cur interface{}) {
				e.enqueueService(cur)
			},
			DeleteFunc: e.enqueueService,
		},
	)

	podInformer.AddEventHandler(framework.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
}
Esempio n. 5
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func (kd *KubeDNS) setEndpointsStore() {
	// Returns a cache.ListWatch that gets all changes to endpoints.
	kd.endpointsStore, kd.endpointsController = kframework.NewInformer(
		&kcache.ListWatch{
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return kd.kubeClient.Core().Endpoints(kapi.NamespaceAll).List(options)
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				return kd.kubeClient.Core().Endpoints(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Endpoints{},
		resyncPeriod,
		kframework.ResourceEventHandlerFuncs{
			AddFunc: kd.handleEndpointAdd,
			UpdateFunc: func(oldObj, newObj interface{}) {
				// TODO: Avoid unwanted updates.
				kd.handleEndpointAdd(newObj)
			},
		},
	)
}
// NewPersistentVolumeController creates a new PersistentVolumeController
func NewPersistentVolumeController(
	kubeClient clientset.Interface,
	syncPeriod time.Duration,
	provisioner vol.ProvisionableVolumePlugin,
	recyclers []vol.VolumePlugin,
	cloud cloudprovider.Interface,
	clusterName string,
	volumeSource, claimSource cache.ListerWatcher,
	eventRecorder record.EventRecorder,
	enableDynamicProvisioning bool,
) *PersistentVolumeController {

	if eventRecorder == nil {
		broadcaster := record.NewBroadcaster()
		broadcaster.StartRecordingToSink(&unversioned_core.EventSinkImpl{Interface: kubeClient.Core().Events("")})
		eventRecorder = broadcaster.NewRecorder(api.EventSource{Component: "persistentvolume-controller"})
	}

	controller := &PersistentVolumeController{
		volumes:                       newPersistentVolumeOrderedIndex(),
		claims:                        cache.NewStore(framework.DeletionHandlingMetaNamespaceKeyFunc),
		kubeClient:                    kubeClient,
		eventRecorder:                 eventRecorder,
		runningOperations:             goroutinemap.NewGoRoutineMap(false /* exponentialBackOffOnError */),
		cloud:                         cloud,
		provisioner:                   provisioner,
		enableDynamicProvisioning:     enableDynamicProvisioning,
		clusterName:                   clusterName,
		createProvisionedPVRetryCount: createProvisionedPVRetryCount,
		createProvisionedPVInterval:   createProvisionedPVInterval,
	}

	controller.recyclePluginMgr.InitPlugins(recyclers, controller)
	if controller.provisioner != nil {
		if err := controller.provisioner.Init(controller); err != nil {
			glog.Errorf("PersistentVolumeController: error initializing provisioner plugin: %v", err)
		}
	}

	if volumeSource == nil {
		volumeSource = &cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return kubeClient.Core().PersistentVolumes().List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return kubeClient.Core().PersistentVolumes().Watch(options)
			},
		}
	}
	controller.volumeSource = volumeSource

	if claimSource == nil {
		claimSource = &cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).Watch(options)
			},
		}
	}
	controller.claimSource = claimSource

	_, controller.volumeController = framework.NewIndexerInformer(
		volumeSource,
		&api.PersistentVolume{},
		syncPeriod,
		framework.ResourceEventHandlerFuncs{
			AddFunc:    controller.addVolume,
			UpdateFunc: controller.updateVolume,
			DeleteFunc: controller.deleteVolume,
		},
		cache.Indexers{"accessmodes": accessModesIndexFunc},
	)
	_, controller.claimController = framework.NewInformer(
		claimSource,
		&api.PersistentVolumeClaim{},
		syncPeriod,
		framework.ResourceEventHandlerFuncs{
			AddFunc:    controller.addClaim,
			UpdateFunc: controller.updateClaim,
			DeleteFunc: controller.deleteClaim,
		},
	)
	return controller
}
Esempio n. 7
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// NewNodeController returns a new node controller to sync instances from cloudprovider.
func NewNodeController(
	cloud cloudprovider.Interface,
	kubeClient clientset.Interface,
	podEvictionTimeout time.Duration,
	deletionEvictionLimiter flowcontrol.RateLimiter,
	terminationEvictionLimiter flowcontrol.RateLimiter,
	nodeMonitorGracePeriod time.Duration,
	nodeStartupGracePeriod time.Duration,
	nodeMonitorPeriod time.Duration,
	clusterCIDR *net.IPNet,
	serviceCIDR *net.IPNet,
	nodeCIDRMaskSize int,
	allocateNodeCIDRs bool) *NodeController {
	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.")
		}
	}
	evictorLock := sync.Mutex{}

	nc := &NodeController{
		cloud:                     cloud,
		knownNodeSet:              make(sets.String),
		kubeClient:                kubeClient,
		recorder:                  recorder,
		podEvictionTimeout:        podEvictionTimeout,
		maximumGracePeriod:        5 * time.Minute,
		evictorLock:               &evictorLock,
		podEvictor:                NewRateLimitedTimedQueue(deletionEvictionLimiter),
		terminationEvictor:        NewRateLimitedTimedQueue(terminationEvictionLimiter),
		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) },
		nodeCIDRUpdateChannel:     make(chan nodeAndCIDR, cidrUpdateQueueSize),
	}

	nc.podStore.Indexer, nc.podController = framework.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return nc.kubeClient.Core().Pods(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return nc.kubeClient.Core().Pods(api.NamespaceAll).Watch(options)
			},
		},
		&api.Pod{},
		controller.NoResyncPeriodFunc(),
		framework.ResourceEventHandlerFuncs{
			AddFunc:    nc.maybeDeleteTerminatingPod,
			UpdateFunc: func(_, obj interface{}) { nc.maybeDeleteTerminatingPod(obj) },
		},
		// We don't need to build a index for podStore here actually, but build one for consistency.
		// It will ensure that if people start making use of the podStore in more specific ways,
		// they'll get the benefits they expect. It will also reserve the name for future refactorings.
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	nodeEventHandlerFuncs := framework.ResourceEventHandlerFuncs{}
	if nc.allocateNodeCIDRs {
		nodeEventHandlerFuncs = framework.ResourceEventHandlerFuncs{
			AddFunc:    nc.allocateOrOccupyCIDR,
			DeleteFunc: nc.recycleCIDR,
		}
	}

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

	nc.daemonSetStore.Store, nc.daemonSetController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return nc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return nc.kubeClient.Extensions().DaemonSets(api.NamespaceAll).Watch(options)
			},
		},
		&extensions.DaemonSet{},
		controller.NoResyncPeriodFunc(),
		framework.ResourceEventHandlerFuncs{},
	)

	if allocateNodeCIDRs {
		nc.cidrAllocator = NewCIDRRangeAllocator(clusterCIDR, nodeCIDRMaskSize)
	}

	return nc
}
Esempio n. 8
0
func NewDaemonSetsController(podInformer framework.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.New(),
	}
	// Manage addition/update of daemon sets.
	dsc.dsStore.Store, dsc.dsController = framework.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,
		framework.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(framework.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 = framework.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(),
		framework.ResourceEventHandlerFuncs{
			AddFunc:    dsc.addNode,
			UpdateFunc: dsc.updateNode,
		},
	)
	dsc.syncHandler = dsc.syncDaemonSet
	dsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return dsc
}
Esempio n. 9
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// NewReplicaSetController creates a new ReplicaSetController.
func NewReplicaSetController(kubeClient clientset.Interface, resyncPeriod controller.ResyncPeriodFunc, burstReplicas int, lookupCacheSize int) *ReplicaSetController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})

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

	rsc := &ReplicaSetController{
		kubeClient: kubeClient,
		podControl: controller.RealPodControl{
			KubeClient: kubeClient,
			Recorder:   eventBroadcaster.NewRecorder(api.EventSource{Component: "replicaset-controller"}),
		},
		burstReplicas: burstReplicas,
		expectations:  controller.NewUIDTrackingControllerExpectations(controller.NewControllerExpectations()),
		queue:         workqueue.New(),
	}

	rsc.rsStore.Store, rsc.rsController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return rsc.kubeClient.Extensions().ReplicaSets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return rsc.kubeClient.Extensions().ReplicaSets(api.NamespaceAll).Watch(options)
			},
		},
		&extensions.ReplicaSet{},
		// TODO: Can we have much longer period here?
		FullControllerResyncPeriod,
		framework.ResourceEventHandlerFuncs{
			AddFunc: rsc.enqueueReplicaSet,
			UpdateFunc: func(old, cur interface{}) {
				oldRS := old.(*extensions.ReplicaSet)
				curRS := cur.(*extensions.ReplicaSet)

				// We should invalidate the whole lookup cache if a RS's selector has been updated.
				//
				// Imagine that you have two RSs:
				// * old RS1
				// * new RS2
				// You also have a pod that is attached to RS2 (because it doesn't match RS1 selector).
				// Now imagine that you are changing RS1 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 RS1
				//
				// This makes the lookup cache less helpful, but selector update does not happen often,
				// so it's not a big problem
				if !reflect.DeepEqual(oldRS.Spec.Selector, curRS.Spec.Selector) {
					rsc.lookupCache.InvalidateAll()
				}

				// You might imagine that we only really need to enqueue the
				// replica set when Spec changes, but it is safer to sync any
				// time this function is triggered. That way a full informer
				// resync can requeue any replica set that don't yet have pods
				// but whose last attempts at creating a pod have failed (since
				// we don't block on creation of pods) instead of those
				// replica sets stalling indefinitely. Enqueueing every time
				// does result in some spurious syncs (like when Status.Replica
				// is updated and the watch notification from it retriggers
				// this function), but in general extra resyncs shouldn't be
				// that bad as ReplicaSets that haven't met expectations yet won't
				// sync, and all the listing is done using local stores.
				if oldRS.Status.Replicas != curRS.Status.Replicas {
					glog.V(4).Infof("Observed updated replica count for ReplicaSet: %v, %d->%d", curRS.Name, oldRS.Status.Replicas, curRS.Status.Replicas)
				}
				rsc.enqueueReplicaSet(cur)
			},
			// This will enter the sync loop and no-op, because the replica set has been deleted from the store.
			// Note that deleting a replica set immediately after scaling it to 0 will not work. The recommended
			// way of achieving this is by performing a `stop` operation on the replica set.
			DeleteFunc: rsc.enqueueReplicaSet,
		},
	)

	rsc.podStore.Indexer, rsc.podController = framework.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return rsc.kubeClient.Core().Pods(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return rsc.kubeClient.Core().Pods(api.NamespaceAll).Watch(options)
			},
		},
		&api.Pod{},
		resyncPeriod(),
		framework.ResourceEventHandlerFuncs{
			AddFunc: rsc.addPod,
			// This invokes the ReplicaSet for every pod change, eg: host assignment. Though this might seem like
			// overkill the most frequent pod update is status, and the associated ReplicaSet will only list from
			// local storage, so it should be ok.
			UpdateFunc: rsc.updatePod,
			DeleteFunc: rsc.deletePod,
		},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	rsc.syncHandler = rsc.syncReplicaSet
	rsc.podStoreSynced = rsc.podController.HasSynced
	rsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return rsc
}
func (r *replenishmentControllerFactory) NewController(options *ReplenishmentControllerOptions) (framework.ControllerInterface, error) {
	var result framework.ControllerInterface
	if r.kubeClient != nil && r.kubeClient.Core().GetRESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("replenishment_controller", r.kubeClient.Core().GetRESTClient().GetRateLimiter())
	}

	switch options.GroupKind {
	case api.Kind("Pod"):
		if r.podInformer != nil {
			r.podInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
				UpdateFunc: PodReplenishmentUpdateFunc(options),
				DeleteFunc: ObjectReplenishmentDeleteFunc(options),
			})
			result = r.podInformer.GetController()
			break
		}

		r.podInformer = informers.CreateSharedPodInformer(r.kubeClient, options.ResyncPeriod())
		result = r.podInformer

	case api.Kind("Service"):
		_, result = framework.NewInformer(
			&cache.ListWatch{
				ListFunc: func(options api.ListOptions) (runtime.Object, error) {
					return r.kubeClient.Core().Services(api.NamespaceAll).List(options)
				},
				WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
					return r.kubeClient.Core().Services(api.NamespaceAll).Watch(options)
				},
			},
			&api.Service{},
			options.ResyncPeriod(),
			framework.ResourceEventHandlerFuncs{
				UpdateFunc: ServiceReplenishmentUpdateFunc(options),
				DeleteFunc: ObjectReplenishmentDeleteFunc(options),
			},
		)
	case api.Kind("ReplicationController"):
		_, result = framework.NewInformer(
			&cache.ListWatch{
				ListFunc: func(options api.ListOptions) (runtime.Object, error) {
					return r.kubeClient.Core().ReplicationControllers(api.NamespaceAll).List(options)
				},
				WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
					return r.kubeClient.Core().ReplicationControllers(api.NamespaceAll).Watch(options)
				},
			},
			&api.ReplicationController{},
			options.ResyncPeriod(),
			framework.ResourceEventHandlerFuncs{
				DeleteFunc: ObjectReplenishmentDeleteFunc(options),
			},
		)
	case api.Kind("PersistentVolumeClaim"):
		_, result = framework.NewInformer(
			&cache.ListWatch{
				ListFunc: func(options api.ListOptions) (runtime.Object, error) {
					return r.kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).List(options)
				},
				WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
					return r.kubeClient.Core().PersistentVolumeClaims(api.NamespaceAll).Watch(options)
				},
			},
			&api.PersistentVolumeClaim{},
			options.ResyncPeriod(),
			framework.ResourceEventHandlerFuncs{
				DeleteFunc: ObjectReplenishmentDeleteFunc(options),
			},
		)
	case api.Kind("Secret"):
		_, result = framework.NewInformer(
			&cache.ListWatch{
				ListFunc: func(options api.ListOptions) (runtime.Object, error) {
					return r.kubeClient.Core().Secrets(api.NamespaceAll).List(options)
				},
				WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
					return r.kubeClient.Core().Secrets(api.NamespaceAll).Watch(options)
				},
			},
			&api.Secret{},
			options.ResyncPeriod(),
			framework.ResourceEventHandlerFuncs{
				DeleteFunc: ObjectReplenishmentDeleteFunc(options),
			},
		)
	case api.Kind("ConfigMap"):
		_, result = framework.NewInformer(
			&cache.ListWatch{
				ListFunc: func(options api.ListOptions) (runtime.Object, error) {
					return r.kubeClient.Core().ConfigMaps(api.NamespaceAll).List(options)
				},
				WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
					return r.kubeClient.Core().ConfigMaps(api.NamespaceAll).Watch(options)
				},
			},
			&api.ConfigMap{},
			options.ResyncPeriod(),
			framework.ResourceEventHandlerFuncs{
				DeleteFunc: ObjectReplenishmentDeleteFunc(options),
			},
		)
	default:
		return nil, fmt.Errorf("no replenishment controller available for %s", options.GroupKind)
	}
	return result, nil
}