Golang Client.Events方法代碼示例

func verifyResult(c *client.Client, podName string, ns string, oldNotScheduled int) {
	allPods, err := c.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything())
	expectNoError(err)
	scheduledPods, notScheduledPods := getPodsScheduled(allPods)

	schedEvents, err := c.Events(ns).List(
		labels.Everything(),
		fields.Set{
			"involvedObject.kind":      "Pod",
			"involvedObject.name":      podName,
			"involvedObject.namespace": ns,
			"source":                   "scheduler",
			"reason":                   "FailedScheduling",
		}.AsSelector())
	expectNoError(err)

	printed := false
	printOnce := func(msg string) string {
		if !printed {
			printed = true
			return msg
		} else {
			return ""
		}
	}

	Expect(len(notScheduledPods)).To(Equal(1+oldNotScheduled), printOnce(fmt.Sprintf("Not scheduled Pods: %#v", notScheduledPods)))
	Expect(schedEvents.Items).ToNot(BeEmpty(), printOnce(fmt.Sprintf("Scheduled Pods: %#v", scheduledPods)))
}

// 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.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "petset"),
	}

	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
}

func NewKubeEvents(client *kubeclient.Client, ec cache.EventsCache) api.Source {
	// Buffered channel to send/receive events from
	eventsChan := make(chan eventsUpdate, 1024)
	errorChan := make(chan error)
	es := &eventsSourceImpl{
		Client:        client,
		eventsChannel: eventsChan,
		errorChannel:  errorChan,
		ec:            ec,
	}
	go es.watchLoop(client.Events(kubeapi.NamespaceAll), eventsChan, errorChan)
	// TODO: Inject Namespace Store in here to get namespace IDs for events.
	return es
}

// checkNoUnexpectedEvents checks unexpected events didn't happen.
// Currently only "UnexpectedJob" is checked.
func checkNoUnexpectedEvents(c *client.Client, ns, scheduledJobName string) error {
	sj, err := c.Batch().ScheduledJobs(ns).Get(scheduledJobName)
	if err != nil {
		return fmt.Errorf("error in getting scheduledjob %s/%s: %v", ns, scheduledJobName, err)
	}
	events, err := c.Events(ns).Search(sj)
	if err != nil {
		return fmt.Errorf("error in listing events: %s", err)
	}
	for _, e := range events.Items {
		if e.Reason == "UnexpectedJob" {
			return fmt.Errorf("found unexpected event: %#v", e)
		}
	}
	return nil
}

// GetReplicationControllerPodsEvents gets events associated to pods in replication controller.
func GetReplicationControllerPodsEvents(client *client.Client, namespace, replicationControllerName string) ([]api.Event,
	error) {
	replicationController, err := client.ReplicationControllers(namespace).Get(replicationControllerName)

	if err != nil {
		return nil, err
	}

	pods, err := client.Pods(namespace).List(api.ListOptions{
		LabelSelector: labels.SelectorFromSet(replicationController.Spec.Selector),
		FieldSelector: fields.Everything(),
	})

	if err != nil {
		return nil, err
	}

	eventList, err := client.Events(namespace).List(api.ListOptions{
		LabelSelector: labels.Everything(),
		FieldSelector: fields.Everything(),
	})

	if err != nil {
		return nil, err
	}

	events := filterEventsByPodsUID(eventList.Items, pods.Items)

	return events, nil
}

func verifyResult(c *client.Client, podName string, ns string) {
	allPods, err := c.Pods(api.NamespaceAll).List(labels.Everything(), fields.Everything(), unversioned.ListOptions{})
	expectNoError(err)
	scheduledPods, notScheduledPods := getPodsScheduled(allPods)

	schedEvents, err := c.Events(ns).List(
		labels.Everything(),
		fields.Set{
			"involvedObject.kind":      "Pod",
			"involvedObject.name":      podName,
			"involvedObject.namespace": ns,
			"source":                   "scheduler",
			"reason":                   "FailedScheduling",
		}.AsSelector(),
		unversioned.ListOptions{})
	expectNoError(err)
	// If we failed to find event with a capitalized first letter of reason
	// try looking for one starting with a small one for backward compatibility.
	// If we don't do it we end up in #15806.
	// TODO: remove this block when we don't care about supporting v1.0 too much.
	if len(schedEvents.Items) == 0 {
		schedEvents, err = c.Events(ns).List(
			labels.Everything(),
			fields.Set{
				"involvedObject.kind":      "Pod",
				"involvedObject.name":      podName,
				"involvedObject.namespace": ns,
				"source":                   "scheduler",
				"reason":                   "failedScheduling",
			}.AsSelector(),
			unversioned.ListOptions{})
		expectNoError(err)
	}

	printed := false
	printOnce := func(msg string) string {
		if !printed {
			printed = true
			return msg
		} else {
			return ""
		}
	}

	Expect(len(notScheduledPods)).To(Equal(1), printOnce(fmt.Sprintf("Not scheduled Pods: %#v", notScheduledPods)))
	Expect(schedEvents.Items).ToNot(BeEmpty(), printOnce(fmt.Sprintf("Scheduled Pods: %#v", scheduledPods)))
}

// GetReplicationControllerList returns a list of all Replication Controllers in the cluster.
func GetReplicationControllerList(client *client.Client) (*ReplicationControllerList, error) {
	log.Printf("Getting list of all replication controllers in the cluster")

	listEverything := api.ListOptions{
		LabelSelector: labels.Everything(),
		FieldSelector: fields.Everything(),
	}

	replicationControllers, err := client.ReplicationControllers(api.NamespaceAll).List(listEverything)

	if err != nil {
		return nil, err
	}

	services, err := client.Services(api.NamespaceAll).List(listEverything)

	if err != nil {
		return nil, err
	}

	pods, err := client.Pods(api.NamespaceAll).List(listEverything)

	if err != nil {
		return nil, err
	}

	eventsList, err := client.Events(api.NamespaceAll).List(api.ListOptions{
		LabelSelector: labels.Everything(),
		FieldSelector: fields.Everything(),
	})

	if err != nil {
		return nil, err
	}

	// Anonymous callback function to get pods warnings.
	// Function fulfils GetPodsEventWarningsFunc type contract.
	// Based on list of api pods returns list of pod related warning events
	getPodsEventWarningsFn := func(pods []api.Pod) []Event {
		return GetPodsEventWarnings(eventsList, pods)
	}

	// Anonymous callback function to get nodes by their names.
	getNodeFn := func(nodeName string) (*api.Node, error) {
		return client.Nodes().Get(nodeName)
	}

	result, err := getReplicationControllerList(replicationControllers.Items, services.Items,
		pods.Items, getPodsEventWarningsFn, getNodeFn)

	if err != nil {
		return nil, err
	}

	return result, nil
}

func NewScheduledJobController(kubeClient *client.Client) *ScheduledJobController {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	// TODO: remove the wrapper when every clients have moved to use the clientset.
	eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))

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

	jm := &ScheduledJobController{
		kubeClient: kubeClient,
		jobControl: realJobControl{KubeClient: kubeClient},
		sjControl:  &realSJControl{KubeClient: kubeClient},
		recorder:   eventBroadcaster.NewRecorder(api.EventSource{Component: "scheduled-job-controller"}),
	}

	return jm
}

// Gets events associated to replication controller.
func GetReplicationControllerEvents(client *client.Client, namespace, replicationControllerName string) ([]api.Event,
	error) {
	fieldSelector, err := fields.ParseSelector("involvedObject.name=" + replicationControllerName)

	if err != nil {
		return nil, err
	}

	list, err := client.Events(namespace).List(api.ListOptions{
		LabelSelector: labels.Everything(),
		FieldSelector: fieldSelector,
	})

	if err != nil {
		return nil, err
	}

	return list.Items, nil
}

// Gets events associated to replica set.
func GetReplicaSetEvents(client *client.Client, namespace, replicaSetName string) ([]api.Event,
	error) {
	fieldSelector, err := fields.ParseSelector("involvedObject.name=" + replicaSetName)

	if err != nil {
		return nil, err
	}

	list, err := client.Events(namespace).List(unversioned.ListOptions{
		LabelSelector: unversioned.LabelSelector{labels.Everything()},
		FieldSelector: unversioned.FieldSelector{fieldSelector},
	})

	if err != nil {
		return nil, err
	}

	return list.Items, nil
}

// Gets events associated to pods in replica set.
func GetReplicaSetPodsEvents(client *client.Client, namespace, replicaSetName string) ([]api.Event,
	error) {
	replicaSet, err := client.ReplicationControllers(namespace).Get(replicaSetName)

	if err != nil {
		return nil, err
	}

	pods, err := client.Pods(namespace).List(unversioned.ListOptions{
		LabelSelector: unversioned.LabelSelector{labels.SelectorFromSet(replicaSet.Spec.Selector)},
		FieldSelector: unversioned.FieldSelector{fields.Everything()},
	})

	if err != nil {
		return nil, err
	}

	events := make([]api.Event, 0, 0)

	for _, pod := range pods.Items {
		fieldSelector, err := fields.ParseSelector("involvedObject.name=" + pod.Name)

		if err != nil {
			return nil, err
		}

		list, err := client.Events(namespace).List(unversioned.ListOptions{
			LabelSelector: unversioned.LabelSelector{labels.Everything()},
			FieldSelector: unversioned.FieldSelector{fieldSelector},
		})

		if err != nil {
			return nil, err
		}

		for _, event := range list.Items {
			events = append(events, event)
		}

	}

	return events, nil
}

			config := RCConfig{Client: c,
				Image:                "gcr.io/google_containers/pause:2.0",
				Name:                 RCName,
				Namespace:            ns,
				PollInterval:         itArg.interval,
				PodStatusFile:        fileHndl,
				Replicas:             totalPods,
				MaxContainerFailures: &MaxContainerFailures,
			}

			// Create a listener for events.
			events := make([](*api.Event), 0)
			_, controller := controllerframework.NewInformer(
				&cache.ListWatch{
					ListFunc: func() (runtime.Object, error) {
						return c.Events(ns).List(labels.Everything(), fields.Everything(), unversioned.ListOptions{})
					},
					WatchFunc: func(options unversioned.ListOptions) (watch.Interface, error) {
						return c.Events(ns).Watch(options)
					},
				},
				&api.Event{},
				0,
				controllerframework.ResourceEventHandlerFuncs{
					AddFunc: func(obj interface{}) {
						events = append(events, obj.(*api.Event))
					},
				},
			)
			stop := make(chan struct{})
			go controller.Run(stop)

				Name:                 RCName,
				Namespace:            ns,
				PollInterval:         itArg.interval,
				PodStatusFile:        fileHndl,
				Replicas:             totalPods,
				MaxContainerFailures: &MaxContainerFailures,
			}

			// Create a listener for events.
			// eLock is a lock protects the events
			var eLock sync.Mutex
			events := make([](*api.Event), 0)
			_, controller := controllerframework.NewInformer(
				&cache.ListWatch{
					ListFunc: func(options api.ListOptions) (runtime.Object, error) {
						return c.Events(ns).List(options)
					},
					WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
						return c.Events(ns).Watch(options)
					},
				},
				&api.Event{},
				0,
				controllerframework.ResourceEventHandlerFuncs{
					AddFunc: func(obj interface{}) {
						eLock.Lock()
						defer eLock.Unlock()
						events = append(events, obj.(*api.Event))
					},
				},
			)

// NewLoadBalancerController creates a controller for gce loadbalancers.
// - kubeClient: A kubernetes REST client.
// - clusterManager: A ClusterManager capable of creating all cloud resources
//	 required for L7 loadbalancing.
// - resyncPeriod: Watchers relist from the Kubernetes API server this often.
func NewLoadBalancerController(kubeClient *client.Client, clusterManager *ClusterManager, resyncPeriod time.Duration, namespace string) (*LoadBalancerController, error) {
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(kubeClient.Events(""))

	lbc := LoadBalancerController{
		client:              kubeClient,
		CloudClusterManager: clusterManager,
		stopCh:              make(chan struct{}),
		recorder: eventBroadcaster.NewRecorder(
			api.EventSource{Component: "loadbalancer-controller"}),
	}
	lbc.nodeQueue = NewTaskQueue(lbc.syncNodes)
	lbc.ingQueue = NewTaskQueue(lbc.sync)
	lbc.hasSynced = lbc.storesSynced

	// Ingress watch handlers
	pathHandlers := framework.ResourceEventHandlerFuncs{
		AddFunc: func(obj interface{}) {
			addIng := obj.(*extensions.Ingress)
			if !isGCEIngress(addIng) {
				glog.Infof("Ignoring add for ingress %v based on annotation %v", addIng.Name, ingressClassKey)
				return
			}
			lbc.recorder.Eventf(addIng, api.EventTypeNormal, "ADD", fmt.Sprintf("%s/%s", addIng.Namespace, addIng.Name))
			lbc.ingQueue.enqueue(obj)
		},
		DeleteFunc: func(obj interface{}) {
			delIng := obj.(*extensions.Ingress)
			if !isGCEIngress(delIng) {
				glog.Infof("Ignoring delete for ingress %v based on annotation %v", delIng.Name, ingressClassKey)
				return
			}
			glog.Infof("Delete notification received for Ingress %v/%v", delIng.Namespace, delIng.Name)
			lbc.ingQueue.enqueue(obj)
		},
		UpdateFunc: func(old, cur interface{}) {
			curIng := cur.(*extensions.Ingress)
			if !isGCEIngress(curIng) {
				return
			}
			if !reflect.DeepEqual(old, cur) {
				glog.V(3).Infof("Ingress %v changed, syncing", curIng.Name)
			}
			lbc.ingQueue.enqueue(cur)
		},
	}
	lbc.ingLister.Store, lbc.ingController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc:  ingressListFunc(lbc.client, namespace),
			WatchFunc: ingressWatchFunc(lbc.client, namespace),
		},
		&extensions.Ingress{}, resyncPeriod, pathHandlers)

	// Service watch handlers
	svcHandlers := framework.ResourceEventHandlerFuncs{
		AddFunc: lbc.enqueueIngressForService,
		UpdateFunc: func(old, cur interface{}) {
			if !reflect.DeepEqual(old, cur) {
				lbc.enqueueIngressForService(cur)
			}
		},
		// Ingress deletes matter, service deletes don't.
	}

	lbc.svcLister.Store, lbc.svcController = framework.NewInformer(
		cache.NewListWatchFromClient(
			lbc.client, "services", namespace, fields.Everything()),
		&api.Service{}, resyncPeriod, svcHandlers)

	lbc.podLister.Indexer, lbc.podController = framework.NewIndexerInformer(
		cache.NewListWatchFromClient(lbc.client, "pods", namespace, fields.Everything()),
		&api.Pod{},
		resyncPeriod,
		framework.ResourceEventHandlerFuncs{},
		cache.Indexers{cache.NamespaceIndex: cache.MetaNamespaceIndexFunc},
	)

	nodeHandlers := framework.ResourceEventHandlerFuncs{
		AddFunc:    lbc.nodeQueue.enqueue,
		DeleteFunc: lbc.nodeQueue.enqueue,
		// Nodes are updated every 10s and we don't care, so no update handler.
	}
	// Node watch handlers
	lbc.nodeLister.Store, lbc.nodeController = framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(opts api.ListOptions) (runtime.Object, error) {
				return lbc.client.Get().
					Resource("nodes").
					FieldsSelectorParam(fields.Everything()).
					Do().
					Get()
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				return lbc.client.Get().
//.........這裏部分代碼省略.........

func runLatencyTest(nodeCount int, c *client.Client, ns string) {
	var (
		nodes              = make(map[string]string, 0)           // pod name -> node name
		createTimestamps   = make(map[string]unversioned.Time, 0) // pod name -> create time
		scheduleTimestamps = make(map[string]unversioned.Time, 0) // pod name -> schedule time
		startTimestamps    = make(map[string]unversioned.Time, 0) // pod name -> time to run
		watchTimestamps    = make(map[string]unversioned.Time, 0) // pod name -> time to read from informer

		additionalPodsPrefix = "latency-pod-" + string(util.NewUUID())
	)

	var mutex sync.Mutex
	readPodInfo := func(p *api.Pod) {
		mutex.Lock()
		defer mutex.Unlock()
		defer GinkgoRecover()

		if p.Status.Phase == api.PodRunning {
			if _, found := watchTimestamps[p.Name]; !found {
				watchTimestamps[p.Name] = unversioned.Now()
				createTimestamps[p.Name] = p.CreationTimestamp
				nodes[p.Name] = p.Spec.NodeName
				var startTimestamp unversioned.Time
				for _, cs := range p.Status.ContainerStatuses {
					if cs.State.Running != nil {
						if startTimestamp.Before(cs.State.Running.StartedAt) {
							startTimestamp = cs.State.Running.StartedAt
						}
					}
				}
				if startTimestamp != unversioned.NewTime(time.Time{}) {
					startTimestamps[p.Name] = startTimestamp
				} else {
					Failf("Pod %v is reported to be running, but none of its containers are", p.Name)
				}
			}
		}
	}

	// Create a informer to read timestamps for each pod
	stopCh := make(chan struct{})
	_, informer := framework.NewInformer(
		&cache.ListWatch{
			ListFunc: func(options api.ListOptions) (runtime.Object, error) {
				options.LabelSelector = labels.SelectorFromSet(labels.Set{"name": additionalPodsPrefix})
				return c.Pods(ns).List(options)
			},
			WatchFunc: func(options api.ListOptions) (watch.Interface, error) {
				options.LabelSelector = labels.SelectorFromSet(labels.Set{"name": additionalPodsPrefix})
				return c.Pods(ns).Watch(options)
			},
		},
		&api.Pod{},
		0,
		framework.ResourceEventHandlerFuncs{
			AddFunc: func(obj interface{}) {
				p, ok := obj.(*api.Pod)
				Expect(ok).To(Equal(true))
				go readPodInfo(p)
			},
			UpdateFunc: func(oldObj, newObj interface{}) {
				p, ok := newObj.(*api.Pod)
				Expect(ok).To(Equal(true))
				go readPodInfo(p)
			},
		},
	)
	go informer.Run(stopCh)

	// Create  additional pods with throughput ~5 pods/sec.
	var wg sync.WaitGroup
	wg.Add(nodeCount)
	podLabels := map[string]string{
		"name": additionalPodsPrefix,
	}
	for i := 1; i <= nodeCount; i++ {
		name := additionalPodsPrefix + "-" + strconv.Itoa(i)
		go createRunningPod(&wg, c, name, ns, "gcr.io/google_containers/pause:go", podLabels)
		time.Sleep(200 * time.Millisecond)
	}
	wg.Wait()

	Logf("Waiting for all Pods begin observed by the watch...")
	for start := time.Now(); len(watchTimestamps) < nodeCount; time.Sleep(10 * time.Second) {
		if time.Since(start) < timeout {
			Failf("Timeout reached waiting for all Pods being observed by the watch.")
		}
	}
	close(stopCh)

	// Read the schedule timestamp by checking the scheduler event for each pod
	selector := fields.Set{
		"involvedObject.kind":      "Pod",
		"involvedObject.namespace": ns,
		"source":                   "scheduler",
	}.AsSelector()
	options := api.ListOptions{FieldSelector: selector}
	schedEvents, err := c.Events(ns).List(options)
	expectNoError(err)
	for k := range createTimestamps {
//.........這裏部分代碼省略.........