Golang workqueue.NewRateLimitingQueue函数代码示例

// NewDeploymentConfigController creates a new DeploymentConfigController.
func NewDeploymentConfigController(dcInformer, rcInformer, podInformer framework.SharedIndexInformer, oc osclient.Interface, kc kclient.Interface, codec runtime.Codec) *DeploymentConfigController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartRecordingToSink(kc.Events(""))
	recorder := eventBroadcaster.NewRecorder(kapi.EventSource{Component: "deploymentconfig-controller"})

	c := &DeploymentConfigController{
		dn: oc,
		rn: kc,

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

		recorder: recorder,
		codec:    codec,
	}

	c.dcStore.Indexer = dcInformer.GetIndexer()
	dcInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
		AddFunc:    c.addDeploymentConfig,
		UpdateFunc: c.updateDeploymentConfig,
		DeleteFunc: c.deleteDeploymentConfig,
	})
	c.rcStore.Indexer = rcInformer.GetIndexer()
	rcInformer.AddEventHandler(framework.ResourceEventHandlerFuncs{
		AddFunc:    c.addReplicationController,
		UpdateFunc: c.updateReplicationController,
		DeleteFunc: c.deleteReplicationController,
	})
	c.podStore.Indexer = podInformer.GetIndexer()

	c.dcStoreSynced = dcInformer.HasSynced
	c.rcStoreSynced = rcInformer.HasSynced
	c.podStoreSynced = podInformer.HasSynced

	return c
}

// NewClusterQuotaMappingController builds a mapping between namespaces and clusterresourcequotas
func NewClusterQuotaMappingController(namespaceInformer shared.NamespaceInformer, quotaInformer shared.ClusterResourceQuotaInformer) *ClusterQuotaMappingController {
	c := &ClusterQuotaMappingController{
		namespaceQueue: workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),

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

		clusterQuotaMapper: NewClusterQuotaMapper(),
	}

	namespaceInformer.Informer().AddEventHandler(framework.ResourceEventHandlerFuncs{
		AddFunc:    c.addNamespace,
		UpdateFunc: c.updateNamespace,
		DeleteFunc: c.deleteNamespace,
	})
	c.namespaceLister = namespaceInformer.Lister()
	c.namespacesSynced = namespaceInformer.Informer().HasSynced

	quotaInformer.Informer().AddEventHandler(framework.ResourceEventHandlerFuncs{
		AddFunc:    c.addQuota,
		UpdateFunc: c.updateQuota,
		DeleteFunc: c.deleteQuota,
	})
	c.quotaLister = quotaInformer.Lister()
	c.quotasSynced = quotaInformer.Informer().HasSynced

	return c
}

// NewTokensController returns a new *TokensController.
func NewTokensController(cl clientset.Interface, options TokensControllerOptions) *TokensController {
	maxRetries := options.MaxRetries
	if maxRetries == 0 {
		maxRetries = 10
	}

	e := &TokensController{
		client: cl,
		token:  options.TokenGenerator,
		rootCA: options.RootCA,

		syncServiceAccountQueue: workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		syncSecretQueue:         workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),

		maxRetries: maxRetries,
	}

	e.serviceAccounts, e.serviceAccountController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return e.client.Core().ServiceAccounts(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return e.client.Core().ServiceAccounts(api.NamespaceAll).Watch(options)
			},
		},
		&api.ServiceAccount{},
		options.ServiceAccountResync,
		framework.ResourceEventHandlerFuncs{
			AddFunc:    e.queueServiceAccountSync,
			UpdateFunc: e.queueServiceAccountUpdateSync,
			DeleteFunc: e.queueServiceAccountSync,
		},
	)

	tokenSelector := fields.SelectorFromSet(map[string]string{api.SecretTypeField: string(api.SecretTypeServiceAccountToken)})
	e.secrets, e.secretController = framework.NewIndexerInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				options.FieldSelector = tokenSelector
				return e.client.Core().Secrets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				options.FieldSelector = tokenSelector
				return e.client.Core().Secrets(api.NamespaceAll).Watch(options)
			},
		},
		&api.Secret{},
		options.SecretResync,
		framework.ResourceEventHandlerFuncs{
			AddFunc:    e.queueSecretSync,
			UpdateFunc: e.queueSecretUpdateSync,
			DeleteFunc: e.queueSecretSync,
		},
		cache.Indexers{"namespace": cache.MetaNamespaceIndexFunc},
	)

	return e
}

// NewDockerRegistryServiceController returns a new *DockerRegistryServiceController.
func NewDockerRegistryServiceController(cl client.Interface, options DockerRegistryServiceControllerOptions) *DockerRegistryServiceController {
	e := &DockerRegistryServiceController{
		client:                cl,
		dockercfgController:   options.DockercfgController,
		registryLocationQueue: workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		secretsToUpdate:       workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		serviceName:           options.RegistryServiceName,
		serviceNamespace:      options.RegistryNamespace,
		dockerURLsIntialized:  options.DockerURLsIntialized,
	}

	e.serviceCache, e.serviceController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(opts kapi.ListOptions) (runtime.Object, error) {
				opts.FieldSelector = fields.OneTermEqualSelector("metadata.name", options.RegistryServiceName)
				return e.client.Services(options.RegistryNamespace).List(opts)
			},
			WatchFunc: func(opts kapi.ListOptions) (watch.Interface, error) {
				opts.FieldSelector = fields.OneTermEqualSelector("metadata.name", options.RegistryServiceName)
				return e.client.Services(options.RegistryNamespace).Watch(opts)
			},
		},
		&kapi.Service{},
		options.Resync,
		framework.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				e.enqueueRegistryLocationQueue()
			},
			UpdateFunc: func(old, cur interface{}) {
				e.enqueueRegistryLocationQueue()
			},
			DeleteFunc: func(obj interface{}) {
				e.enqueueRegistryLocationQueue()
			},
		},
	)
	e.servicesSynced = e.serviceController.HasSynced
	e.syncRegistryLocationHandler = e.syncRegistryLocationChange

	dockercfgOptions := kapi.ListOptions{FieldSelector: fields.SelectorFromSet(map[string]string{kapi.SecretTypeField: string(kapi.SecretTypeDockercfg)})}
	e.secretCache, e.secretController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(opts kapi.ListOptions) (runtime.Object, error) {
				return e.client.Secrets(kapi.NamespaceAll).List(dockercfgOptions)
			},
			WatchFunc: func(opts kapi.ListOptions) (watch.Interface, error) {
				return e.client.Secrets(kapi.NamespaceAll).Watch(dockercfgOptions)
			},
		},
		&kapi.Secret{},
		options.Resync,
		framework.ResourceEventHandlerFuncs{},
	)
	e.secretsSynced = e.secretController.HasSynced
	e.syncSecretHandler = e.syncSecretUpdate

	return e
}

// NewTaskQueue creates a new task queue with the given sync function.
// The sync function is called for every element inserted into the queue.
func NewTaskQueue(syncFn func(string) error) *taskQueue {
	return &taskQueue{
		queue:      workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		sync:       syncFn,
		workerDone: make(chan struct{}),
	}
}

// NewDockercfgController returns a new *DockercfgController.
func NewDockercfgController(cl kclientset.Interface, options DockercfgControllerOptions) *DockercfgController {
	e := &DockercfgController{
		client:               cl,
		queue:                workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		dockerURLsIntialized: options.DockerURLsIntialized,
	}

	var serviceAccountCache cache.Store
	serviceAccountCache, e.serviceAccountController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return e.client.Core().ServiceAccounts(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return e.client.Core().ServiceAccounts(api.NamespaceAll).Watch(options)
			},
		},
		&api.ServiceAccount{},
		options.Resync,
		cache.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				serviceAccount := obj.(*api.ServiceAccount)
				glog.V(5).Infof("Adding service account %s", serviceAccount.Name)
				e.enqueueServiceAccount(serviceAccount)
			},
			UpdateFunc: func(old, cur interface{}) {
				serviceAccount := cur.(*api.ServiceAccount)
				glog.V(5).Infof("Updating service account %s", serviceAccount.Name)
				// Resync on service object relist.
				e.enqueueServiceAccount(serviceAccount)
			},
		},
	)
	e.serviceAccountCache = NewEtcdMutationCache(serviceAccountCache)

	tokenSecretSelector := fields.OneTermEqualSelector(api.SecretTypeField, string(api.SecretTypeServiceAccountToken))
	e.secretCache, e.secretController = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				options.FieldSelector = tokenSecretSelector
				return e.client.Core().Secrets(api.NamespaceAll).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				options.FieldSelector = tokenSecretSelector
				return e.client.Core().Secrets(api.NamespaceAll).Watch(options)
			},
		},
		&api.Secret{},
		options.Resync,
		cache.ResourceEventHandlerFuncs{
			AddFunc:    func(cur interface{}) { e.handleTokenSecretUpdate(nil, cur) },
			UpdateFunc: func(old, cur interface{}) { e.handleTokenSecretUpdate(old, cur) },
			DeleteFunc: e.handleTokenSecretDelete,
		},
	)

	e.syncHandler = e.syncServiceAccount

	return e
}

func NewBucketingWorkQueue() BucketingWorkQueue {
	return &workQueueBucket{
		queue:      workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		work:       map[interface{}][]interface{}{},
		dirtyWork:  map[interface{}][]interface{}{},
		inProgress: map[interface{}]bool{},
	}
}

// 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.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
	}

	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
}

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

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

	rm.rcStore.Indexer, rm.rcController = framework.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,
		framework.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(framework.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
}

// NewIngressIPController creates a new IngressIPController.
// TODO this should accept a shared informer
func NewIngressIPController(kc kclientset.Interface, ipNet *net.IPNet, resyncInterval time.Duration) *IngressIPController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartRecordingToSink(&kcoreclient.EventSinkImpl{Interface: kc.Core().Events("")})
	recorder := eventBroadcaster.NewRecorder(kapi.EventSource{Component: "ingressip-controller"})

	ic := &IngressIPController{
		client:     kc.Core(),
		queue:      workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		maxRetries: 10,
		recorder:   recorder,
	}

	ic.cache, ic.controller = cache.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return ic.client.Services(kapi.NamespaceAll).List(options)
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				return ic.client.Services(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Service{},
		resyncInterval,
		cache.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				service := obj.(*kapi.Service)
				glog.V(5).Infof("Adding service %s/%s", service.Namespace, service.Name)
				ic.enqueueChange(obj, nil)
			},
			UpdateFunc: func(old, cur interface{}) {
				service := cur.(*kapi.Service)
				glog.V(5).Infof("Updating service %s/%s", service.Namespace, service.Name)
				ic.enqueueChange(cur, old)
			},
			DeleteFunc: func(obj interface{}) {
				service := obj.(*kapi.Service)
				glog.V(5).Infof("Deleting service %s/%s", service.Namespace, service.Name)
				ic.enqueueChange(nil, obj)
			},
		},
	)

	ic.changeHandler = ic.processChange
	ic.persistenceHandler = persistService

	ic.ipAllocator = ipallocator.NewAllocatorCIDRRange(ipNet, func(max int, rangeSpec string) allocator.Interface {
		return allocator.NewAllocationMap(max, rangeSpec)
	})

	ic.allocationMap = make(map[string]string)
	ic.requeuedAllocations = sets.NewString()

	return ic
}

func NewUnidlingController(scaleNS kextclient.ScalesGetter, endptsNS kclient.EndpointsGetter, evtNS kclient.EventsGetter, dcNamespacer deployclient.DeploymentConfigsGetter, rcNamespacer kclient.ReplicationControllersGetter, resyncPeriod time.Duration) *UnidlingController {
	fieldSet := fields.Set{}
	fieldSet["reason"] = unidlingapi.NeedPodsReason
	fieldSelector := fieldSet.AsSelector()

	unidlingController := &UnidlingController{
		scaleNamespacer:     scaleNS,
		endpointsNamespacer: endptsNS,
		queue:               workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		lastFiredCache: &lastFiredCache{
			items: make(map[types.NamespacedName]time.Time),
		},

		dcNamespacer: dcNamespacer,
		rcNamespacer: rcNamespacer,
	}

	_, controller := framework.NewInformer(
		&cache.ListWatch{
			// No need to list -- we only care about new events
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return &kapi.EventList{}, nil
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				options.FieldSelector = fieldSelector
				return evtNS.Events(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Event{},
		resyncPeriod,
		framework.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				event := obj.(*kapi.Event)
				unidlingController.enqueueEvent(event)
			},
			UpdateFunc: func(oldObj interface{}, newObj interface{}) {
				// retrigger on new last-seen times
				event := newObj.(*kapi.Event)
				unidlingController.enqueueEvent(event)
			},
			DeleteFunc: func(obj interface{}) {
				// this is just to clean up our cache of the last seen times
				event := obj.(*kapi.Event)
				unidlingController.clearEventFromCache(event)
			},
		},
	)

	unidlingController.controller = controller

	return unidlingController
}

// NewServiceServingCertUpdateController creates a new ServiceServingCertUpdateController.
// TODO this should accept a shared informer
func NewServiceServingCertUpdateController(serviceClient kcoreclient.ServicesGetter, secretClient kcoreclient.SecretsGetter, ca *crypto.CA, dnsSuffix string, resyncInterval time.Duration) *ServiceServingCertUpdateController {
	sc := &ServiceServingCertUpdateController{
		secretClient: secretClient,

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

		ca:        ca,
		dnsSuffix: dnsSuffix,
		// TODO base the expiry time on a percentage of the time for the lifespan of the cert
		minTimeLeftForCert: 1 * time.Hour,
	}

	sc.serviceCache, sc.serviceController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return serviceClient.Services(kapi.NamespaceAll).List(options)
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				return serviceClient.Services(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Service{},
		resyncInterval,
		framework.ResourceEventHandlerFuncs{},
	)
	sc.serviceHasSynced = sc.serviceController.HasSynced

	sc.secretCache, sc.secretController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return sc.secretClient.Secrets(kapi.NamespaceAll).List(options)
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				return sc.secretClient.Secrets(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Secret{},
		resyncInterval,
		framework.ResourceEventHandlerFuncs{
			AddFunc:    sc.addSecret,
			UpdateFunc: sc.updateSecret,
		},
	)
	sc.secretHasSynced = sc.secretController.HasSynced

	sc.syncHandler = sc.syncSecret

	return sc
}

// NewNamespaceController creates a new NamespaceController
func NewNamespaceController(
	kubeClient clientset.Interface,
	clientPool dynamic.ClientPool,
	groupVersionResources []unversioned.GroupVersionResource,
	resyncPeriod time.Duration,
	finalizerToken api.FinalizerName) *NamespaceController {
	// create the controller so we can inject the enqueue function
	namespaceController := &NamespaceController{
		kubeClient: kubeClient,
		clientPool: clientPool,
		queue:      workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		groupVersionResources: groupVersionResources,
		opCache:               operationNotSupportedCache{},
		finalizerToken:        finalizerToken,
	}

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

	// configure the backing store/controller
	store, controller := framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				return kubeClient.Core().Namespaces().List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return kubeClient.Core().Namespaces().Watch(options)
			},
		},
		&api.Namespace{},
		resyncPeriod,
		framework.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				namespace := obj.(*api.Namespace)
				namespaceController.enqueueNamespace(namespace)
			},
			UpdateFunc: func(oldObj, newObj interface{}) {
				namespace := newObj.(*api.Namespace)
				namespaceController.enqueueNamespace(namespace)
			},
		},
	)

	namespaceController.store = store
	namespaceController.controller = controller
	return namespaceController
}

func TestWorkRequeuesWhenFull(t *testing.T) {
	tests := []struct {
		testName        string
		requeuedChange  bool
		requeuedService bool
		requeued        bool
	}{
		{
			testName: "Previously requeued change should be requeued",
			requeued: true,
		},
		{
			testName:        "The only pending allocation should be requeued",
			requeuedChange:  true,
			requeuedService: true,
			requeued:        true,
		},
		{
			testName:        "Already requeued allocation should not be requeued",
			requeuedService: true,
			requeued:        false,
		},
	}
	for _, test := range tests {
		c := newController(t, nil)
		c.changeHandler = func(change *serviceChange) error {
			return ipallocator.ErrFull
		}
		// Use a queue with no delay to avoid timing issues
		c.queue = workqueue.NewRateLimitingQueue(workqueue.NewMaxOfRateLimiter())
		change := &serviceChange{
			key:                "foo",
			requeuedAllocation: test.requeuedChange,
		}
		if test.requeuedService {
			c.requeuedAllocations.Insert(change.key)
		}
		c.queue.Add(change)

		c.work()

		requeued := (c.queue.Len() == 1)
		if test.requeued != requeued {
			t.Errorf("Expected requeued == %v, got %v", test.requeued, requeued)
		}
	}
}

// NewServiceServingCertController creates a new ServiceServingCertController.
// TODO this should accept a shared informer
func NewServiceServingCertController(serviceClient kclient.ServicesNamespacer, secretClient kclient.SecretsNamespacer, ca *crypto.CA, dnsSuffix string, resyncInterval time.Duration) *ServiceServingCertController {
	sc := &ServiceServingCertController{
		serviceClient: serviceClient,
		secretClient:  secretClient,

		queue:      workqueue.NewRateLimitingQueue(workqueue.DefaultControllerRateLimiter()),
		maxRetries: 10,

		ca:        ca,
		dnsSuffix: dnsSuffix,
	}

	sc.serviceCache, sc.serviceController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
				return sc.serviceClient.Services(kapi.NamespaceAll).List(options)
			},
			WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
				return sc.serviceClient.Services(kapi.NamespaceAll).Watch(options)
			},
		},
		&kapi.Service{},
		resyncInterval,
		framework.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				service := obj.(*kapi.Service)
				glog.V(4).Infof("Adding service %s", service.Name)
				sc.enqueueService(obj)
			},
			UpdateFunc: func(old, cur interface{}) {
				service := cur.(*kapi.Service)
				glog.V(4).Infof("Updating service %s", service.Name)
				// Resync on service object relist.
				sc.enqueueService(cur)
			},
		},
	)

	sc.syncHandler = sc.syncService

	return sc
}