Golang PodInformer.Informer方法代码示例

// NewDeploymentController creates a new DeploymentController.
func NewDeploymentController(dInformer informers.DeploymentInformer, rsInformer informers.ReplicaSetInformer, podInformer informers.PodInformer, client clientset.Interface) *DeploymentController {
	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: client.Core().Events("")})

	if client != nil && client.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("deployment_controller", client.Core().RESTClient().GetRateLimiter())
	}
	dc := &DeploymentController{
		client:        client,
		eventRecorder: eventBroadcaster.NewRecorder(v1.EventSource{Component: "deployment-controller"}),
		queue:         workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "deployment"),
		progressQueue: workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "progress-check"),
	}
	dc.rsControl = controller.RealRSControl{
		KubeClient: client,
		Recorder:   dc.eventRecorder,
	}

	dInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    dc.addDeployment,
		UpdateFunc: dc.updateDeployment,
		// This will enter the sync loop and no-op, because the deployment has been deleted from the store.
		DeleteFunc: dc.deleteDeployment,
	})
	rsInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    dc.addReplicaSet,
		UpdateFunc: dc.updateReplicaSet,
		DeleteFunc: dc.deleteReplicaSet,
	})
	podInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		DeleteFunc: dc.deletePod,
	})

	dc.syncHandler = dc.syncDeployment
	dc.enqueueDeployment = dc.enqueue

	dc.dLister = dInformer.Lister()
	dc.rsLister = rsInformer.Lister()
	dc.podLister = podInformer.Lister()
	dc.dListerSynced = dInformer.Informer().HasSynced
	dc.rsListerSynced = dInformer.Informer().HasSynced
	dc.podListerSynced = dInformer.Informer().HasSynced
	return dc
}

// NewReplicaSetController configures a replica set controller with the specified event recorder
func NewReplicaSetController(rsInformer informers.ReplicaSetInformer, podInformer informers.PodInformer, kubeClient clientset.Interface, burstReplicas int, lookupCacheSize int, garbageCollectorEnabled bool) *ReplicaSetController {
	if kubeClient != nil && kubeClient.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("replicaset_controller", kubeClient.Core().RESTClient().GetRateLimiter())
	}
	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartLogging(glog.Infof)
	eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: kubeClient.Core().Events("")})

	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.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "replicaset"),
		garbageCollectorEnabled: garbageCollectorEnabled,
	}

	rsInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    rsc.enqueueReplicaSet,
		UpdateFunc: rsc.updateRS,
		// 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,
	})
	podInformer.Informer().AddEventHandler(cache.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,
	})

	rsc.syncHandler = rsc.syncReplicaSet
	rsc.rsLister = rsInformer.Lister()
	rsc.podLister = podInformer.Lister()
	rsc.podListerSynced = podInformer.Informer().HasSynced
	rsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return rsc
}

// 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 informers.PodInformer,
	nodeInformer informers.NodeInformer,
	daemonSetInformer informers.DaemonSetInformer,
	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(v1.EventSource{Component: "controllermanager"})
	eventBroadcaster.StartLogging(glog.Infof)
	if kubeClient != nil {
		glog.V(0).Infof("Sending events to api server.")
		eventBroadcaster.StartRecordingToSink(&v1core.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().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("node_controller", kubeClient.Core().RESTClient().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]*v1.Node),
		kubeClient:                  kubeClient,
		recorder:                    recorder,
		podEvictionTimeout:          podEvictionTimeout,
		maximumGracePeriod:          5 * time.Minute,
		zonePodEvictor:              make(map[string]*RateLimitedTimedQueue),
		nodeStatusMap:               make(map[string]nodeStatusData),
		nodeMonitorGracePeriod:      nodeMonitorGracePeriod,
		nodeMonitorPeriod:           nodeMonitorPeriod,
		nodeStartupGracePeriod:      nodeStartupGracePeriod,
		lookupIP:                    net.LookupIP,
		now:                         metav1.Now,
		clusterCIDR:                 clusterCIDR,
		serviceCIDR:                 serviceCIDR,
		allocateNodeCIDRs:           allocateNodeCIDRs,
		forcefullyDeletePod:         func(p *v1.Pod) error { return forcefullyDeletePod(kubeClient, p) },
		nodeExistsInCloudProvider:   func(nodeName types.NodeName) (bool, error) { return nodeExistsInCloudProvider(cloud, nodeName) },
		evictionLimiterQPS:          evictionLimiterQPS,
		secondaryEvictionLimiterQPS: secondaryEvictionLimiterQPS,
		largeClusterThreshold:       largeClusterThreshold,
		unhealthyZoneThreshold:      unhealthyZoneThreshold,
		zoneStates:                  make(map[string]zoneState),
		podInformer:                 podInformer,
		nodeInformer:                nodeInformer,
		daemonSetInformer:           daemonSetInformer,
	}
	nc.enterPartialDisruptionFunc = nc.ReducedQPSFunc
	nc.enterFullDisruptionFunc = nc.HealthyQPSFunc
	nc.computeZoneStateFunc = nc.ComputeZoneState

	podInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    nc.maybeDeleteTerminatingPod,
		UpdateFunc: func(_, obj interface{}) { nc.maybeDeleteTerminatingPod(obj) },
	})
	nc.podStore = *podInformer.Lister()

	nodeEventHandlerFuncs := cache.ResourceEventHandlerFuncs{}
	if nc.allocateNodeCIDRs {
		var nodeList *v1.NodeList
		var err error
		// We must poll because apiserver might not be up. This error causes
		// controller manager to restart.
		if pollErr := wait.Poll(10*time.Second, apiserverStartupGracePeriod, func() (bool, error) {
			nodeList, err = kubeClient.Core().Nodes().List(v1.ListOptions{
				FieldSelector: fields.Everything().String(),
				LabelSelector: labels.Everything().String(),
			})
			if err != nil {
				glog.Errorf("Failed to list all nodes: %v", err)
				return false, nil
			}
			return true, nil
//.........这里部分代码省略.........

func NewDaemonSetsController(daemonSetInformer informers.DaemonSetInformer, podInformer informers.PodInformer, nodeInformer informers.NodeInformer, kubeClient clientset.Interface, 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(&v1core.EventSinkImpl{Interface: kubeClient.Core().Events("")})

	if kubeClient != nil && kubeClient.Core().RESTClient().GetRateLimiter() != nil {
		metrics.RegisterMetricAndTrackRateLimiterUsage("daemon_controller", kubeClient.Core().RESTClient().GetRateLimiter())
	}
	dsc := &DaemonSetsController{
		kubeClient:    kubeClient,
		eventRecorder: eventBroadcaster.NewRecorder(v1.EventSource{Component: "daemonset-controller"}),
		podControl: controller.RealPodControl{
			KubeClient: kubeClient,
			Recorder:   eventBroadcaster.NewRecorder(v1.EventSource{Component: "daemon-set"}),
		},
		burstReplicas: BurstReplicas,
		expectations:  controller.NewControllerExpectations(),
		queue:         workqueue.NewNamedRateLimitingQueue(workqueue.DefaultControllerRateLimiter(), "daemonset"),
	}

	daemonSetInformer.Informer().AddEventHandler(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,
	})
	dsc.dsStore = daemonSetInformer.Lister()
	dsc.dsStoreSynced = daemonSetInformer.Informer().HasSynced

	// 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.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    dsc.addPod,
		UpdateFunc: dsc.updatePod,
		DeleteFunc: dsc.deletePod,
	})
	dsc.podStore = podInformer.Lister()
	dsc.podStoreSynced = podInformer.Informer().HasSynced

	nodeInformer.Informer().AddEventHandler(cache.ResourceEventHandlerFuncs{
		AddFunc:    dsc.addNode,
		UpdateFunc: dsc.updateNode,
	},
	)
	dsc.nodeStoreSynced = nodeInformer.Informer().HasSynced
	dsc.nodeStore = nodeInformer.Lister()

	dsc.syncHandler = dsc.syncDaemonSet
	dsc.lookupCache = controller.NewMatchingCache(lookupCacheSize)
	return dsc
}