Golang HandleError示例

说明

golang handleerror示例是从最受好评的开源项目中提取的实现代码,你可以参考下面示例的使用方式。

编程语言: Golang

命名空间/包名称: k8s/io/kubernetes/pkg/util/runtime

示例#1
文件: storage_rbac.go 项目: ncdc/kubernetes

func PostStartHook(hookContext genericapiserver.PostStartHookContext) error {
	clientset, err := rbacclient.NewForConfig(hookContext.LoopbackClientConfig)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("unable to initialize clusterroles: %v", err))
		return nil
	}

	existingClusterRoles, err := clientset.ClusterRoles().List(api.ListOptions{})
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("unable to initialize clusterroles: %v", err))
		return nil
	}
	// if clusterroles already exist, then assume we don't have work to do because we've already
	// initialized or another API server has started this task
	if len(existingClusterRoles.Items) > 0 {
		return nil
	}

	for _, clusterRole := range append(bootstrappolicy.ClusterRoles(), bootstrappolicy.ControllerRoles()...) {
		if _, err := clientset.ClusterRoles().Create(&clusterRole); err != nil {
			// don't fail on failures, try to create as many as you can
			utilruntime.HandleError(fmt.Errorf("unable to initialize clusterroles: %v", err))
			continue
		}
		glog.Infof("Created clusterrole.%s/%s", rbac.GroupName, clusterRole.Name)
	}

	return nil
}

示例#2
文件: upgrade.go 项目: CodeJuan/kubernetes

// UpgradeResponse upgrades an HTTP response to one that supports multiplexed
// streams. newStreamHandler will be called synchronously whenever the
// other end of the upgraded connection creates a new stream.
func (u responseUpgrader) UpgradeResponse(w http.ResponseWriter, req *http.Request, newStreamHandler httpstream.NewStreamHandler) httpstream.Connection {
	connectionHeader := strings.ToLower(req.Header.Get(httpstream.HeaderConnection))
	upgradeHeader := strings.ToLower(req.Header.Get(httpstream.HeaderUpgrade))
	if !strings.Contains(connectionHeader, strings.ToLower(httpstream.HeaderUpgrade)) || !strings.Contains(upgradeHeader, strings.ToLower(HeaderSpdy31)) {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprintf(w, "unable to upgrade: missing upgrade headers in request: %#v", req.Header)
		return nil
	}

	hijacker, ok := w.(http.Hijacker)
	if !ok {
		w.WriteHeader(http.StatusInternalServerError)
		fmt.Fprintf(w, "unable to upgrade: unable to hijack response")
		return nil
	}

	w.Header().Add(httpstream.HeaderConnection, httpstream.HeaderUpgrade)
	w.Header().Add(httpstream.HeaderUpgrade, HeaderSpdy31)
	w.WriteHeader(http.StatusSwitchingProtocols)

	conn, _, err := hijacker.Hijack()
	if err != nil {
		runtime.HandleError(fmt.Errorf("unable to upgrade: error hijacking response: %v", err))
		return nil
	}

	spdyConn, err := NewServerConnection(conn, newStreamHandler)
	if err != nil {
		runtime.HandleError(fmt.Errorf("unable to upgrade: error creating SPDY server connection: %v", err))
		return nil
	}

	return spdyConn
}

示例#3
文件: deployment_controller.go 项目: jonboulle/kubernetes

// deletePod will enqueue a Recreate Deployment once all of its pods have stopped running.
func (dc *DeploymentController) deletePod(obj interface{}) {
	pod, ok := obj.(*v1.Pod)

	// When a delete is dropped, the relist will notice a pod in the store not
	// in the list, leading to the insertion of a tombstone object which contains
	// the deleted key/value. Note that this value might be stale. If the Pod
	// changed labels the new deployment will not be woken up till the periodic resync.
	if !ok {
		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v, could take up to %v before a deployment recreates/updates pod", obj, FullDeploymentResyncPeriod))
			return
		}
		pod, ok = tombstone.Obj.(*v1.Pod)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod %#v, could take up to %v before a deployment recreates/updates pods", obj, FullDeploymentResyncPeriod))
			return
		}
	}
	if d := dc.getDeploymentForPod(pod); d != nil && d.Spec.Strategy.Type == extensions.RecreateDeploymentStrategyType {
		podList, err := dc.listPods(d)
		if err == nil && len(podList.Items) == 0 {
			dc.enqueueDeployment(d)
		}
	}
}

示例#4
文件: deployment_controller.go 项目: jonboulle/kubernetes

func (dc *DeploymentController) deleteDeployment(obj interface{}) {
	d, ok := obj.(*extensions.Deployment)
	if !ok {
		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %#v", obj))
			return
		}
		d, ok = tombstone.Obj.(*extensions.Deployment)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a Deployment %#v", obj))
			return
		}
	}
	glog.V(4).Infof("Deleting deployment %s", d.Name)
	dc.enqueueDeployment(d)
	deployments, err := dc.dLister.Deployments(d.Namespace).List(labels.Everything())
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("error listing deployments in namespace %s: %v", d.Namespace, err))
		return
	}
	// Trigger cleanup of any old overlapping deployments; we don't care about any error
	// returned here.
	for i := range deployments {
		otherD := deployments[i]

		overlaps, err := util.OverlapsWith(d, otherD)
		// Enqueue otherD so it gets cleaned up
		if err == nil && overlaps {
			dc.enqueueDeployment(otherD)
		}
	}
}

示例#5
文件: controller.go 项目: xgwang-zte/origin

func (c *RouterController) HandleNamespaces() {
	for i := 0; i < c.NamespaceRetries; i++ {
		namespaces, err := c.Namespaces.NamespaceNames()
		if err == nil {
			c.lock.Lock()
			defer c.lock.Unlock()

			glog.V(4).Infof("Updating watched namespaces: %v", namespaces)
			if err := c.Plugin.HandleNamespaces(namespaces); err != nil {
				utilruntime.HandleError(err)
			}

			// Namespace filtering is assumed to be have been
			// performed so long as the plugin event handler is called
			// at least once.
			c.filteredByNamespace = true
			c.commit()

			return
		}
		utilruntime.HandleError(fmt.Errorf("unable to find namespaces for router: %v", err))
		time.Sleep(c.NamespaceWaitInterval)
	}
	glog.V(4).Infof("Unable to update list of namespaces")
}

示例#6
文件: replica_set.go 项目: upmc-enterprises/kubernetes

// When a pod is deleted, enqueue the replica set that manages the pod and update its expectations.
// obj could be an *api.Pod, or a DeletionFinalStateUnknown marker item.
func (rsc *ReplicaSetController) deletePod(obj interface{}) {
	pod, ok := obj.(*api.Pod)

	// When a delete is dropped, the relist will notice a pod in the store not
	// in the list, leading to the insertion of a tombstone object which contains
	// the deleted key/value. Note that this value might be stale. If the pod
	// changed labels the new ReplicaSet will not be woken up till the periodic resync.
	if !ok {
		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %+v", obj))
			return
		}
		pod, ok = tombstone.Obj.(*api.Pod)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod %#v", obj))
			return
		}
	}
	glog.V(4).Infof("Pod %s/%s deleted through %v, timestamp %+v: %#v.", pod.Namespace, pod.Name, utilruntime.GetCaller(), pod.DeletionTimestamp, pod)
	if rs := rsc.getPodReplicaSet(pod); rs != nil {
		rsKey, err := controller.KeyFunc(rs)
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("Couldn't get key for ReplicaSet %#v: %v", rs, err))
			return
		}
		rsc.expectations.DeletionObserved(rsKey, controller.PodKey(pod))
		rsc.enqueueReplicaSet(rs)
	}
}

示例#7
文件: eventqueue.go 项目: juanluisvaladas/origin

// Process queued changes for an object.  The 'process' function is called
// repeatedly with each available cache.Delta that describes state changes
// for that object. If the process function returns an error queued changes
// for that object are dropped but processing continues with the next available
// object's cache.Deltas.  The error is logged with call stack information.
func (queue *EventQueue) Pop(process ProcessEventFunc, expectedType interface{}) (interface{}, error) {
	return queue.DeltaFIFO.Pop(func(obj interface{}) error {
		// Oldest to newest delta lists
		for _, delta := range obj.(cache.Deltas) {
			// Update private store to track object deletion
			if queue.knownObjects != nil {
				queue.updateKnownObjects(delta)
			}

			// Handle DeletedFinalStateUnknown delta objects
			var err error
			if expectedType != nil {
				delta.Object, err = extractDeltaObject(delta, expectedType)
				if err != nil {
					utilruntime.HandleError(err)
					return nil
				}
			}

			// Process one delta for the object
			if err = process(delta); err != nil {
				utilruntime.HandleError(fmt.Errorf("event processing failed: %v", err))
				return nil
			}
		}
		return nil
	})
}

示例#8
文件: endpoints_controller.go 项目: PeterLamar/kubernetes

// When a pod is updated, figure out what services it used to be a member of
// and what services it will be a member of, and enqueue the union of these.
// old and cur must be *api.Pod types.
func (e *endpointController) updatePod(old, cur interface{}) {
	if api.Semantic.DeepEqual(old, cur) {
		return
	}
	newPod := old.(*api.Pod)
	services, err := e.getPodServiceMemberships(newPod)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("Unable to get pod %v/%v's service memberships: %v", newPod.Namespace, newPod.Name, err))
		return
	}

	oldPod := cur.(*api.Pod)
	// Only need to get the old services if the labels changed.
	if !reflect.DeepEqual(newPod.Labels, oldPod.Labels) {
		oldServices, err := e.getPodServiceMemberships(oldPod)
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("Unable to get pod %v/%v's service memberships: %v", oldPod.Namespace, oldPod.Name, err))
			return
		}
		services = services.Union(oldServices)
	}
	for key := range services {
		e.queue.Add(key)
	}
}

示例#9
文件: strategy.go 项目: RomainVabre/origin

// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
// It extracts the latest info from the manifest and sets that on the object. It allows a user
// to update the manifest so that it matches the digest (in case an older server stored a manifest
// that was malformed, it can always be corrected).
func (imageStrategy) PrepareForUpdate(obj, old runtime.Object) {
	newImage := obj.(*api.Image)
	oldImage := old.(*api.Image)

	// image metadata cannot be altered
	newImage.DockerImageReference = oldImage.DockerImageReference
	newImage.DockerImageMetadata = oldImage.DockerImageMetadata
	newImage.DockerImageMetadataVersion = oldImage.DockerImageMetadataVersion
	newImage.DockerImageLayers = oldImage.DockerImageLayers

	// allow an image update that results in the manifest matching the digest (the name)
	newManifest := newImage.DockerImageManifest
	newImage.DockerImageManifest = oldImage.DockerImageManifest
	if newManifest != oldImage.DockerImageManifest && len(newManifest) > 0 {
		ok, err := api.ManifestMatchesImage(oldImage, []byte(newManifest))
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("attempted to validate that a manifest change to %q matched the signature, but failed: %v", oldImage.Name, err))
		} else if ok {
			newImage.DockerImageManifest = newManifest
		}
	}

	if err := api.ImageWithMetadata(newImage); err != nil {
		utilruntime.HandleError(fmt.Errorf("Unable to update image metadata for %q: %v", newImage.Name, err))
	}
}

示例#10
文件: controller_utils.go 项目: wikimedia/operations-debs-kubernetes

// maybeDeleteTerminatingPod non-gracefully deletes pods that are terminating
// that should not be gracefully terminated.
func (nc *NodeController) maybeDeleteTerminatingPod(obj interface{}) {
	pod, ok := obj.(*api.Pod)
	if !ok {
		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
		if !ok {
			glog.Errorf("Couldn't get object from tombstone %#v", obj)
			return
		}
		pod, ok = tombstone.Obj.(*api.Pod)
		if !ok {
			glog.Errorf("Tombstone contained object that is not a Pod %#v", obj)
			return
		}
	}

	// consider only terminating pods
	if pod.DeletionTimestamp == nil {
		return
	}

	// delete terminating pods that have not yet been scheduled
	if len(pod.Spec.NodeName) == 0 {
		utilruntime.HandleError(nc.forcefullyDeletePod(pod))
		return
	}

	nodeObj, found, err := nc.nodeStore.Store.GetByKey(pod.Spec.NodeName)
	if err != nil {
		// this can only happen if the Store.KeyFunc has a problem creating
		// a key for the pod. If it happens once, it will happen again so
		// don't bother requeuing the pod.
		utilruntime.HandleError(err)
		return
	}

	// delete terminating pods that have been scheduled on
	// nonexistent nodes
	if !found {
		glog.Warningf("Unable to find Node: %v, deleting all assigned Pods.", pod.Spec.NodeName)
		utilruntime.HandleError(nc.forcefullyDeletePod(pod))
		return
	}

	// delete terminating pods that have been scheduled on
	// nodes that do not support graceful termination
	// TODO(mikedanese): this can be removed when we no longer
	// guarantee backwards compatibility of master API to kubelets with
	// versions less than 1.1.0
	node := nodeObj.(*api.Node)
	v, err := version.Parse(node.Status.NodeInfo.KubeletVersion)
	if err != nil {
		glog.V(0).Infof("couldn't parse verions %q of minion: %v", node.Status.NodeInfo.KubeletVersion, err)
		utilruntime.HandleError(nc.forcefullyDeletePod(pod))
		return
	}
	if gracefulDeletionVersion.GT(v) {
		utilruntime.HandleError(nc.forcefullyDeletePod(pod))
		return
	}
}

示例#11
文件: controller.go 项目: xgwang-zte/origin

// clearLocalAllocation clears an in-memory allocation if it belongs
// to the specified service key.
func (ic *IngressIPController) clearLocalAllocation(key, ipString string) bool {
	glog.V(5).Infof("Attempting to clear local allocation of ip %v for service %v", ipString, key)

	ip := net.ParseIP(ipString)
	if ip == nil {
		// An invalid ip address cannot be deallocated
		utilruntime.HandleError(fmt.Errorf("Error parsing ip: %v", ipString))
		return false
	}

	ipKey, ok := ic.allocationMap[ipString]
	switch {
	case !ok:
		glog.V(6).Infof("IP address %v is not currently allocated", ipString)
		return false
	case key != ipKey:
		glog.V(6).Infof("IP address %v is not allocated to service %v", ipString, key)
		return false
	}

	// Remove allocation
	if err := ic.ipAllocator.Release(ip); err != nil {
		// Release from contiguous allocator should never return an error.
		utilruntime.HandleError(fmt.Errorf("Error releasing ip %v for service %v: %v", ipString, key, err))
		return false
	}
	delete(ic.allocationMap, ipString)
	glog.V(5).Infof("IP address %v is now available for allocation", ipString)
	return true
}

示例#12
文件: clusterquotamapping.go 项目: Xmagicer/origin

func (c *ClusterQuotaMappingController) namespaceWork() bool {
	key, quit := c.namespaceQueue.Get()
	if quit {
		return true
	}
	defer c.namespaceQueue.Done(key)

	namespace, exists, err := c.namespaceLister.GetByKey(key.(string))
	if !exists {
		c.namespaceQueue.Forget(key)
		return false
	}
	if err != nil {
		utilruntime.HandleError(err)
		return false
	}

	err = c.syncNamespace(namespace.(*kapi.Namespace))
	outOfRetries := c.namespaceQueue.NumRequeues(key) > 5
	switch {
	case err != nil && outOfRetries:
		utilruntime.HandleError(err)
		c.namespaceQueue.Forget(key)

	case err != nil && !outOfRetries:
		c.namespaceQueue.AddRateLimited(key)

	default:
		c.namespaceQueue.Forget(key)
	}

	return false
}

示例#13
文件: servicecontroller.go 项目: RyanBinfeng/kubernetes

// Loop infinitely, processing all service updates provided by the queue.
func (s *ServiceController) watchServices(serviceQueue *cache.DeltaFIFO) {
	for {
		serviceQueue.Pop(func(obj interface{}) error {
			deltas, ok := obj.(cache.Deltas)
			if !ok {
				runtime.HandleError(fmt.Errorf("Received object from service watcher that wasn't Deltas: %+v", obj))
				return nil
			}
			delta := deltas.Newest()
			if delta == nil {
				runtime.HandleError(fmt.Errorf("Received nil delta from watcher queue."))
				return nil
			}
			err, retryDelay := s.processDelta(delta)
			if retryDelay != 0 {
				// Add the failed service back to the queue so we'll retry it.
				runtime.HandleError(fmt.Errorf("Failed to process service delta. Retrying in %s: %v", retryDelay, err))
				go func(deltas cache.Deltas, delay time.Duration) {
					time.Sleep(delay)
					if err := serviceQueue.AddIfNotPresent(deltas); err != nil {
						runtime.HandleError(fmt.Errorf("Error requeuing service delta - will not retry: %v", err))
					}
				}(deltas, retryDelay)
			} else if err != nil {
				runtime.HandleError(fmt.Errorf("Failed to process service delta. Not retrying: %v", err))
			}
			return nil
		})
	}
}

示例#14
文件: endpoints_controller.go 项目: pst/kubernetes

// When a pod is updated, figure out what services it used to be a member of
// and what services it will be a member of, and enqueue the union of these.
// old and cur must be *api.Pod types.
func (e *EndpointController) updatePod(old, cur interface{}) {
	newPod := cur.(*api.Pod)
	oldPod := old.(*api.Pod)
	if newPod.ResourceVersion == oldPod.ResourceVersion {
		// Periodic resync will send update events for all known pods.
		// Two different versions of the same pod will always have different RVs.
		return
	}
	services, err := e.getPodServiceMemberships(newPod)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("Unable to get pod %v/%v's service memberships: %v", newPod.Namespace, newPod.Name, err))
		return
	}

	// Only need to get the old services if the labels changed.
	if !reflect.DeepEqual(newPod.Labels, oldPod.Labels) ||
		!hostNameAndDomainAreEqual(newPod, oldPod) {
		oldServices, err := e.getPodServiceMemberships(oldPod)
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("Unable to get pod %v/%v's service memberships: %v", oldPod.Namespace, oldPod.Name, err))
			return
		}
		services = services.Union(oldServices)
	}
	for key := range services {
		e.queue.Add(key)
	}
}

示例#15
文件: imagestreamtag_evaluator.go 项目: Xmagicer/origin

// makeImageStreamTagAdmissionUsageFunc returns a function that computes a resource usage for given image
// stream tag during admission.
func makeImageStreamTagAdmissionUsageFunc(isNamespacer osclient.ImageStreamsNamespacer) generic.UsageFunc {
	return func(object runtime.Object) kapi.ResourceList {
		ist, ok := object.(*imageapi.ImageStreamTag)
		if !ok {
			return kapi.ResourceList{}
		}

		res := map[kapi.ResourceName]resource.Quantity{
			imageapi.ResourceImageStreams: *resource.NewQuantity(0, resource.BinarySI),
		}

		isName, _, err := imageapi.ParseImageStreamTagName(ist.Name)
		if err != nil {
			utilruntime.HandleError(err)
			return kapi.ResourceList{}
		}

		is, err := isNamespacer.ImageStreams(ist.Namespace).Get(isName)
		if err != nil {
			if !kerrors.IsNotFound(err) {
				utilruntime.HandleError(fmt.Errorf("failed to get image stream %s/%s: %v", ist.Namespace, isName, err))
			}
		}
		if is == nil {
			res[imageapi.ResourceImageStreams] = *resource.NewQuantity(1, resource.BinarySI)
		}

		return res
	}
}

示例#16
文件: etcd_watcher.go 项目: nhr/origin

func (w *etcdWatcher) decodeObject(node *etcd.Node) (runtime.Object, error) {
	if obj, found := w.cache.getFromCache(node.ModifiedIndex, storage.Everything); found {
		return obj, nil
	}

	obj, err := runtime.Decode(w.encoding, []byte(node.Value))
	if err != nil {
		return nil, err
	}

	// ensure resource version is set on the object we load from etcd
	if err := w.versioner.UpdateObject(obj, node.ModifiedIndex); err != nil {
		utilruntime.HandleError(fmt.Errorf("failure to version api object (%d) %#v: %v", node.ModifiedIndex, obj, err))
	}

	// perform any necessary transformation
	if w.transform != nil {
		obj, err = w.transform(obj)
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("failure to transform api object %#v: %v", obj, err))
			return nil, err
		}
	}

	if node.ModifiedIndex != 0 {
		w.cache.addToCache(node.ModifiedIndex, obj)
	}
	return obj, nil
}

示例#17

// When a pod is deleted, enqueue the job that manages the pod and update its expectations.
// obj could be an *api.Pod, or a DeletionFinalStateUnknown marker item.
func (jm *JobController) deletePod(obj interface{}) {
	pod, ok := obj.(*api.Pod)

	// When a delete is dropped, the relist will notice a pod in the store not
	// in the list, leading to the insertion of a tombstone object which contains
	// the deleted key/value. Note that this value might be stale. If the pod
	// changed labels the new job will not be woken up till the periodic resync.
	if !ok {
		tombstone, ok := obj.(cache.DeletedFinalStateUnknown)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Couldn't get object from tombstone %+v", obj))
			return
		}
		pod, ok = tombstone.Obj.(*api.Pod)
		if !ok {
			utilruntime.HandleError(fmt.Errorf("Tombstone contained object that is not a pod %+v", obj))
			return
		}
	}
	if job := jm.getPodJob(pod); job != nil {
		jobKey, err := controller.KeyFunc(job)
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("Couldn't get key for job %#v: %v", job, err))
			return
		}
		jm.expectations.DeletionObserved(jobKey)
		jm.enqueueController(job)
	}
}

示例#18
文件: cache.go 项目: sgallagher/origin

// invalidateCache returns true if there was a change in the cluster namespace that holds cluster policy and policy bindings
func (ac *AuthorizationCache) invalidateCache() bool {
	invalidateCache := false

	clusterPolicyList, err := ac.policyClient.ReadOnlyClusterPolicies().List(nil)
	if err != nil {
		utilruntime.HandleError(err)
		return invalidateCache
	}

	temporaryVersions := sets.NewString()
	for _, clusterPolicy := range clusterPolicyList.Items {
		temporaryVersions.Insert(clusterPolicy.ResourceVersion)
	}
	if (len(ac.clusterPolicyResourceVersions) != len(temporaryVersions)) || !ac.clusterPolicyResourceVersions.HasAll(temporaryVersions.List()...) {
		invalidateCache = true
		ac.clusterPolicyResourceVersions = temporaryVersions
	}

	clusterPolicyBindingList, err := ac.policyClient.ReadOnlyClusterPolicyBindings().List(nil)
	if err != nil {
		utilruntime.HandleError(err)
		return invalidateCache
	}

	temporaryVersions.Delete(temporaryVersions.List()...)
	for _, clusterPolicyBinding := range clusterPolicyBindingList.Items {
		temporaryVersions.Insert(clusterPolicyBinding.ResourceVersion)
	}
	if (len(ac.clusterBindingResourceVersions) != len(temporaryVersions)) || !ac.clusterBindingResourceVersions.HasAll(temporaryVersions.List()...) {
		invalidateCache = true
		ac.clusterBindingResourceVersions = temporaryVersions
	}
	return invalidateCache
}

示例#19
文件: etcd_watcher.go 项目: nhr/origin

func (w *etcdWatcher) sendAdd(res *etcd.Response) {
	if res.Node == nil {
		utilruntime.HandleError(fmt.Errorf("unexpected nil node: %#v", res))
		return
	}
	if w.include != nil && !w.include(res.Node.Key) {
		return
	}
	obj, err := w.decodeObject(res.Node)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("failure to decode api object: %v\n'%v' from %#v %#v", err, string(res.Node.Value), res, res.Node))
		// TODO: expose an error through watch.Interface?
		// Ignore this value. If we stop the watch on a bad value, a client that uses
		// the resourceVersion to resume will never be able to get past a bad value.
		return
	}
	if !w.filter.Filter(obj) {
		return
	}
	action := watch.Added
	if res.Node.ModifiedIndex != res.Node.CreatedIndex {
		action = watch.Modified
	}
	w.emit(watch.Event{
		Type:   action,
		Object: obj,
	})
}

示例#20
文件: etcd_watcher.go 项目: nhr/origin

func (w *etcdWatcher) sendDelete(res *etcd.Response) {
	if res.PrevNode == nil {
		utilruntime.HandleError(fmt.Errorf("unexpected nil prev node: %#v", res))
		return
	}
	if w.include != nil && !w.include(res.PrevNode.Key) {
		return
	}
	node := *res.PrevNode
	if res.Node != nil {
		// Note that this sends the *old* object with the etcd index for the time at
		// which it gets deleted. This will allow users to restart the watch at the right
		// index.
		node.ModifiedIndex = res.Node.ModifiedIndex
	}
	obj, err := w.decodeObject(&node)
	if err != nil {
		utilruntime.HandleError(fmt.Errorf("failure to decode api object: %v\nfrom %#v %#v", err, res, res.Node))
		// TODO: expose an error through watch.Interface?
		// Ignore this value. If we stop the watch on a bad value, a client that uses
		// the resourceVersion to resume will never be able to get past a bad value.
		return
	}
	if !w.filter.Filter(obj) {
		return
	}
	w.emit(watch.Event{
		Type:   watch.Deleted,
		Object: obj,
	})
}

示例#21

func newPostStartHook(directClusterRoleAccess *clusterroleetcd.REST) genericapiserver.PostStartHookFunc {
	return func(genericapiserver.PostStartHookContext) error {
		ctx := api.NewContext()

		existingClusterRoles, err := directClusterRoleAccess.List(ctx, &api.ListOptions{})
		if err != nil {
			utilruntime.HandleError(fmt.Errorf("unable to initialize clusterroles: %v", err))
			return nil
		}
		// if clusterroles already exist, then assume we don't have work to do because we've already
		// initialized or another API server has started this task
		if len(existingClusterRoles.(*rbac.ClusterRoleList).Items) > 0 {
			return nil
		}

		for _, clusterRole := range bootstrappolicy.ClusterRoles() {
			if _, err := directClusterRoleAccess.Create(ctx, &clusterRole); err != nil {
				// don't fail on failures, try to create as many as you can
				utilruntime.HandleError(fmt.Errorf("unable to initialize clusterroles: %v", err))
				continue
			}
			glog.Infof("Created clusterrole.%s/%s", rbac.GroupName, clusterRole.Name)
		}

		return nil
	}
}

示例#22
文件: httpstream.go 项目: XbinZh/kubernetes

func createStreams(req *http.Request, w http.ResponseWriter, supportedStreamProtocols []string, idleTimeout, streamCreationTimeout time.Duration) (*context, bool) {
	opts, err := newOptions(req)
	if err != nil {
		runtime.HandleError(err)
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprint(w, err.Error())
		return nil, false
	}

	if wsstream.IsWebSocketRequest(req) {
		return createWebSocketStreams(req, w, opts, idleTimeout)
	}

	protocol, err := httpstream.Handshake(req, w, supportedStreamProtocols)
	if err != nil {
		w.WriteHeader(http.StatusBadRequest)
		fmt.Fprint(w, err.Error())
		return nil, false
	}

	streamCh := make(chan streamAndReply)

	upgrader := spdy.NewResponseUpgrader()
	conn := upgrader.UpgradeResponse(w, req, func(stream httpstream.Stream, replySent <-chan struct{}) error {
		streamCh <- streamAndReply{Stream: stream, replySent: replySent}
		return nil
	})
	// from this point on, we can no longer call methods on response
	if conn == nil {
		// The upgrader is responsible for notifying the client of any errors that
		// occurred during upgrading. All we can do is return here at this point
		// if we weren't successful in upgrading.
		return nil, false
	}

	conn.SetIdleTimeout(idleTimeout)

	var handler protocolHandler
	switch protocol {
	case StreamProtocolV2Name:
		handler = &v2ProtocolHandler{}
	case "":
		glog.V(4).Infof("Client did not request protocol negotiaion. Falling back to %q", StreamProtocolV1Name)
		fallthrough
	case StreamProtocolV1Name:
		handler = &v1ProtocolHandler{}
	}

	expired := time.NewTimer(streamCreationTimeout)

	ctx, err := handler.waitForStreams(streamCh, opts.expectedStreams, expired.C)
	if err != nil {
		runtime.HandleError(err)
		return nil, false
	}

	ctx.conn = conn
	ctx.tty = opts.tty
	return ctx, true
}

示例#23
文件: reflector.go 项目: vulpecula/kubernetes

// watchHandler watches w and keeps *resourceVersion up to date.
func (r *Reflector) watchHandler(w watch.Interface, resourceVersion *string, resyncCh <-chan time.Time, stopCh <-chan struct{}) error {
	start := time.Now()
	eventCount := 0

	// Stopping the watcher should be idempotent and if we return from this function there's no way
	// we're coming back in with the same watch interface.
	defer w.Stop()

loop:
	for {
		select {
		case <-stopCh:
			return errorStopRequested
		case <-resyncCh:
			return errorResyncRequested
		case event, ok := <-w.ResultChan():
			if !ok {
				break loop
			}
			if event.Type == watch.Error {
				return apierrs.FromObject(event.Object)
			}
			if e, a := r.expectedType, reflect.TypeOf(event.Object); e != nil && e != a {
				utilruntime.HandleError(fmt.Errorf("%s: expected type %v, but watch event object had type %v", r.name, e, a))
				continue
			}
			meta, err := meta.Accessor(event.Object)
			if err != nil {
				utilruntime.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
				continue
			}
			newResourceVersion := meta.GetResourceVersion()
			switch event.Type {
			case watch.Added:
				r.store.Add(event.Object)
			case watch.Modified:
				r.store.Update(event.Object)
			case watch.Deleted:
				// TODO: Will any consumers need access to the "last known
				// state", which is passed in event.Object? If so, may need
				// to change this.
				r.store.Delete(event.Object)
			default:
				utilruntime.HandleError(fmt.Errorf("%s: unable to understand watch event %#v", r.name, event))
			}
			*resourceVersion = newResourceVersion
			r.setLastSyncResourceVersion(newResourceVersion)
			eventCount++
		}
	}

	watchDuration := time.Now().Sub(start)
	if watchDuration < 1*time.Second && eventCount == 0 {
		glog.V(4).Infof("%s: Unexpected watch close - watch lasted less than a second and no items received", r.name)
		return errors.New("very short watch")
	}
	glog.V(4).Infof("%s: Watch close - %v total %v items received", r.name, r.expectedType, eventCount)
	return nil
}

示例#24
文件: watch.go 项目: XbinZh/kubernetes

// HandleWS implements a websocket handler.
func (s *WatchServer) HandleWS(ws *websocket.Conn) {
	defer ws.Close()
	done := make(chan struct{})
	go wsstream.IgnoreReceives(ws, 0)

	var unknown runtime.Unknown
	internalEvent := &versioned.InternalEvent{}
	buf := &bytes.Buffer{}
	streamBuf := &bytes.Buffer{}
	ch := s.watching.ResultChan()
	for {
		select {
		case <-done:
			s.watching.Stop()
			return
		case event, ok := <-ch:
			if !ok {
				// End of results.
				return
			}
			obj := event.Object
			s.fixup(obj)
			if err := s.embeddedEncoder.Encode(obj, buf); err != nil {
				// unexpected error
				utilruntime.HandleError(fmt.Errorf("unable to encode watch object: %v", err))
				return
			}

			// ContentType is not required here because we are defaulting to the serializer
			// type
			unknown.Raw = buf.Bytes()
			event.Object = &unknown

			// the internal event will be versioned by the encoder
			*internalEvent = versioned.InternalEvent(event)
			if err := s.encoder.Encode(internalEvent, streamBuf); err != nil {
				// encoding error
				utilruntime.HandleError(fmt.Errorf("unable to encode event: %v", err))
				s.watching.Stop()
				return
			}
			if s.useTextFraming {
				if err := websocket.Message.Send(ws, streamBuf.String()); err != nil {
					// Client disconnect.
					s.watching.Stop()
					return
				}
			} else {
				if err := websocket.Message.Send(ws, streamBuf.Bytes()); err != nil {
					// Client disconnect.
					s.watching.Stop()
					return
				}
			}
			buf.Reset()
			streamBuf.Reset()
		}
	}
}

示例#25
文件: replica_set.go 项目: XiaoningDing/UbernetesPOC

// manageReplicas checks and updates replicas for the given ReplicaSet.
func (rsc *ReplicaSetController) manageReplicas(filteredPods []*api.Pod, rs *extensions.ReplicaSet) {
	diff := len(filteredPods) - rs.Spec.Replicas
	rsKey, err := controller.KeyFunc(rs)
	if err != nil {
		glog.Errorf("Couldn't get key for ReplicaSet %#v: %v", rs, err)
		return
	}
	if diff < 0 {
		diff *= -1
		if diff > rsc.burstReplicas {
			diff = rsc.burstReplicas
		}
		rsc.expectations.ExpectCreations(rsKey, diff)
		wait := sync.WaitGroup{}
		wait.Add(diff)
		glog.V(2).Infof("Too few %q/%q replicas, need %d, creating %d", rs.Namespace, rs.Name, rs.Spec.Replicas, diff)
		for i := 0; i < diff; i++ {
			go func() {
				defer wait.Done()
				if err := rsc.podControl.CreatePods(rs.Namespace, rs.Spec.Template, rs); err != nil {
					// Decrement the expected number of creates because the informer won't observe this pod
					glog.V(2).Infof("Failed creation, decrementing expectations for replica set %q/%q", rs.Namespace, rs.Name)
					rsc.expectations.CreationObserved(rsKey)
					utilruntime.HandleError(err)
				}
			}()
		}
		wait.Wait()
	} else if diff > 0 {
		if diff > rsc.burstReplicas {
			diff = rsc.burstReplicas
		}
		rsc.expectations.ExpectDeletions(rsKey, diff)
		glog.V(2).Infof("Too many %q/%q replicas, need %d, deleting %d", rs.Namespace, rs.Name, rs.Spec.Replicas, diff)
		// No need to sort pods if we are about to delete all of them
		if rs.Spec.Replicas != 0 {
			// Sort the pods in the order such that not-ready < ready, unscheduled
			// < scheduled, and pending < running. This ensures that we delete pods
			// in the earlier stages whenever possible.
			sort.Sort(controller.ActivePods(filteredPods))
		}

		wait := sync.WaitGroup{}
		wait.Add(diff)
		for i := 0; i < diff; i++ {
			go func(ix int) {
				defer wait.Done()
				if err := rsc.podControl.DeletePod(rs.Namespace, filteredPods[ix].Name, rs); err != nil {
					// Decrement the expected number of deletes because the informer won't observe this deletion
					glog.V(2).Infof("Failed deletion, decrementing expectations for replica set %q/%q", rs.Namespace, rs.Name)
					rsc.expectations.DeletionObserved(rsKey)
					utilruntime.HandleError(err)
				}
			}(i)
		}
		wait.Wait()
	}
}

示例#26
文件: service_group.go 项目: RomainVabre/origin

// NewServiceGroup returns the ServiceGroup and a set of all the NodeIDs covered by the service
func NewServiceGroup(g osgraph.Graph, serviceNode *kubegraph.ServiceNode) (ServiceGroup, IntSet) {
	covered := IntSet{}
	covered.Insert(serviceNode.ID())

	service := ServiceGroup{}
	service.Service = serviceNode

	for _, uncastServiceFulfiller := range g.PredecessorNodesByEdgeKind(serviceNode, kubeedges.ExposedThroughServiceEdgeKind) {
		container := osgraph.GetTopLevelContainerNode(g, uncastServiceFulfiller)

		switch castContainer := container.(type) {
		case *deploygraph.DeploymentConfigNode:
			service.FulfillingDCs = append(service.FulfillingDCs, castContainer)
		case *kubegraph.ReplicationControllerNode:
			service.FulfillingRCs = append(service.FulfillingRCs, castContainer)
		case *kubegraph.PodNode:
			service.FulfillingPods = append(service.FulfillingPods, castContainer)
		default:
			utilruntime.HandleError(fmt.Errorf("unrecognized container: %v", castContainer))
		}
	}

	for _, uncastServiceFulfiller := range g.PredecessorNodesByEdgeKind(serviceNode, routeedges.ExposedThroughRouteEdgeKind) {
		container := osgraph.GetTopLevelContainerNode(g, uncastServiceFulfiller)

		switch castContainer := container.(type) {
		case *routegraph.RouteNode:
			service.ExposingRoutes = append(service.ExposingRoutes, castContainer)
		default:
			utilruntime.HandleError(fmt.Errorf("unrecognized container: %v", castContainer))
		}
	}

	// add the DCPipelines for all the DCs that fulfill the service
	for _, fulfillingDC := range service.FulfillingDCs {
		dcPipeline, dcCovers := NewDeploymentConfigPipeline(g, fulfillingDC)

		covered.Insert(dcCovers.List()...)
		service.DeploymentConfigPipelines = append(service.DeploymentConfigPipelines, dcPipeline)
	}

	for _, fulfillingRC := range service.FulfillingRCs {
		rcView, rcCovers := NewReplicationController(g, fulfillingRC)

		covered.Insert(rcCovers.List()...)
		service.ReplicationControllers = append(service.ReplicationControllers, rcView)
	}

	for _, fulfillingPod := range service.FulfillingPods {
		_, podCovers := NewPod(g, fulfillingPod)
		covered.Insert(podCovers.List()...)
	}

	return service, covered
}

示例#27
文件: predicates.go 项目: RyanBinfeng/kubernetes

func (c *MaxPDVolumeCountChecker) filterVolumes(volumes []api.Volume, namespace string, filteredVolumes map[string]bool) error {
	for _, vol := range volumes {
		if id, ok := c.filter.FilterVolume(&vol); ok {
			filteredVolumes[id] = true
		} else if vol.PersistentVolumeClaim != nil {
			pvcName := vol.PersistentVolumeClaim.ClaimName
			if pvcName == "" {
				return fmt.Errorf("PersistentVolumeClaim had no name")
			}
			pvc, err := c.pvcInfo.GetPersistentVolumeClaimInfo(namespace, pvcName)
			if err != nil {
				// if the PVC is not found, log the error and count the PV towards the PV limit
				// generate a random volume ID since its required for de-dup
				utilruntime.HandleError(fmt.Errorf("Unable to look up PVC info for %s/%s, assuming PVC matches predicate when counting limits: %v", namespace, pvcName, err))
				source := rand.NewSource(time.Now().UnixNano())
				generatedID := "missingPVC" + strconv.Itoa(rand.New(source).Intn(1000000))
				filteredVolumes[generatedID] = true
				return nil
			}

			if pvc == nil {
				return fmt.Errorf("PersistentVolumeClaim not found: %q", pvcName)
			}

			pvName := pvc.Spec.VolumeName
			if pvName == "" {
				return fmt.Errorf("PersistentVolumeClaim is not bound: %q", pvcName)
			}

			pv, err := c.pvInfo.GetPersistentVolumeInfo(pvName)
			if err != nil {
				// if the PV is not found, log the error
				// and count the PV towards the PV limit
				// generate a random volume ID since its required for de-dup
				utilruntime.HandleError(fmt.Errorf("Unable to look up PV info for %s/%s/%s, assuming PV matches predicate when counting limits: %v", namespace, pvcName, pvName, err))
				source := rand.NewSource(time.Now().UnixNano())
				generatedID := "missingPV" + strconv.Itoa(rand.New(source).Intn(1000000))
				filteredVolumes[generatedID] = true
				return nil
			}

			if pv == nil {
				return fmt.Errorf("PersistentVolume not found: %q", pvName)
			}

			if id, ok := c.filter.FilterPersistentVolume(pv); ok {
				filteredVolumes[id] = true
			}
		}
	}

	return nil
}

示例#28
文件: strategy.go 项目: xgwang-zte/origin

// PrepareForUpdate clears fields that are not allowed to be set by end users on update.
// It extracts the latest info from the manifest and sets that on the object. It allows a user
// to update the manifest so that it matches the digest (in case an older server stored a manifest
// that was malformed, it can always be corrected).
func (s imageStrategy) PrepareForUpdate(ctx kapi.Context, obj, old runtime.Object) {
	newImage := obj.(*api.Image)
	oldImage := old.(*api.Image)

	// image metadata cannot be altered
	newImage.DockerImageMetadata = oldImage.DockerImageMetadata
	newImage.DockerImageMetadataVersion = oldImage.DockerImageMetadataVersion
	newImage.DockerImageLayers = oldImage.DockerImageLayers

	if oldImage.DockerImageSignatures != nil {
		newImage.DockerImageSignatures = nil
		for _, v := range oldImage.DockerImageSignatures {
			newImage.DockerImageSignatures = append(newImage.DockerImageSignatures, v)
		}
	}

	var err error

	// allow an image update that results in the manifest matching the digest (the name)
	if newImage.DockerImageManifest != oldImage.DockerImageManifest {
		ok := true
		if len(newImage.DockerImageManifest) > 0 {
			ok, err = api.ManifestMatchesImage(oldImage, []byte(newImage.DockerImageManifest))
			if err != nil {
				utilruntime.HandleError(fmt.Errorf("attempted to validate that a manifest change to %q matched the signature, but failed: %v", oldImage.Name, err))
			}
		}
		if !ok {
			newImage.DockerImageManifest = oldImage.DockerImageManifest
		}
	}

	if newImage.DockerImageConfig != oldImage.DockerImageConfig {
		ok := true
		if len(newImage.DockerImageConfig) > 0 {
			ok, err = api.ImageConfigMatchesImage(newImage, []byte(newImage.DockerImageConfig))
			if err != nil {
				utilruntime.HandleError(fmt.Errorf("attempted to validate that a new config for %q mentioned in the manifest, but failed: %v", oldImage.Name, err))
			}
		}
		if !ok {
			newImage.DockerImageConfig = oldImage.DockerImageConfig
		}
	}

	if err = api.ImageWithMetadata(newImage); err != nil {
		utilruntime.HandleError(fmt.Errorf("Unable to update image metadata for %q: %v", newImage.Name, err))
	}

	// clear signature fields that will be later set by server once it's able to parse the content
	s.clearSignatureDetails(newImage)
}

示例#29
文件: nodecontroller.go 项目: jonboulle/kubernetes

// Run starts an asynchronous loop that monitors the status of cluster nodes.
func (nc *NodeController) Run() {
	go func() {
		defer utilruntime.HandleCrash()

		if !cache.WaitForCacheSync(wait.NeverStop, nc.nodeInformer.Informer().HasSynced, nc.podInformer.Informer().HasSynced, nc.daemonSetInformer.Informer().HasSynced) {
			utilruntime.HandleError(errors.New("NodeController timed out while waiting for informers to sync..."))
			return
		}

		// Incorporate the results of node status pushed from kubelet to master.
		go wait.Until(func() {
			if err := nc.monitorNodeStatus(); err != nil {
				glog.Errorf("Error monitoring node status: %v", err)
			}
		}, nc.nodeMonitorPeriod, wait.NeverStop)

		// Managing eviction of nodes:
		// When we delete pods off a node, if the node was not empty at the time we then
		// queue an eviction watcher. If we hit an error, retry deletion.
		go wait.Until(func() {
			nc.evictorLock.Lock()
			defer nc.evictorLock.Unlock()
			for k := range nc.zonePodEvictor {
				nc.zonePodEvictor[k].Try(func(value TimedValue) (bool, time.Duration) {
					obj, exists, err := nc.nodeStore.GetByKey(value.Value)
					if err != nil {
						glog.Warningf("Failed to get Node %v from the nodeStore: %v", value.Value, err)
					} else if !exists {
						glog.Warningf("Node %v no longer present in nodeStore!", value.Value)
					} else {
						node, _ := obj.(*v1.Node)
						zone := utilnode.GetZoneKey(node)
						EvictionsNumber.WithLabelValues(zone).Inc()
					}

					nodeUid, _ := value.UID.(string)
					remaining, err := deletePods(nc.kubeClient, nc.recorder, value.Value, nodeUid, nc.daemonSetStore)
					if err != nil {
						utilruntime.HandleError(fmt.Errorf("unable to evict node %q: %v", value.Value, err))
						return false, 0
					}

					if remaining {
						glog.Infof("Pods awaiting deletion due to NodeController eviction")
					}
					return true, 0
				})
			}
		}, nodeEvictionPeriod, wait.NeverStop)
	}()
}

示例#30
文件: factory.go 项目: asiainfoLDP/datafactory

// Create creates a DeploymentConfigController.
func (factory *DeploymentConfigControllerFactory) Create() controller.RunnableController {
	deploymentConfigLW := &cache.ListWatch{
		ListFunc: func(options kapi.ListOptions) (runtime.Object, error) {
			return factory.Client.DeploymentConfigs(kapi.NamespaceAll).List(options)
		},
		WatchFunc: func(options kapi.ListOptions) (watch.Interface, error) {
			return factory.Client.DeploymentConfigs(kapi.NamespaceAll).Watch(options)
		},
	}
	queue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
	cache.NewReflector(deploymentConfigLW, &deployapi.DeploymentConfig{}, queue, 2*time.Minute).Run()

	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartRecordingToSink(factory.KubeClient.Events(""))
	recorder := eventBroadcaster.NewRecorder(kapi.EventSource{Component: "deploymentconfig-controller"})

	configController := NewDeploymentConfigController(factory.KubeClient, factory.Client, factory.Codec, recorder)

	return &controller.RetryController{
		Queue: queue,
		RetryManager: controller.NewQueueRetryManager(
			queue,
			cache.MetaNamespaceKeyFunc,
			func(obj interface{}, err error, retries controller.Retry) bool {
				config := obj.(*deployapi.DeploymentConfig)
				// no retries for a fatal error
				if _, isFatal := err.(fatalError); isFatal {
					glog.V(4).Infof("Will not retry fatal error for deploymentConfig %s/%s: %v", config.Namespace, config.Name, err)
					utilruntime.HandleError(err)
					return false
				}
				// infinite retries for a transient error
				if _, isTransient := err.(transientError); isTransient {
					glog.V(4).Infof("Retrying deploymentConfig %s/%s with error: %v", config.Namespace, config.Name, err)
					return true
				}
				utilruntime.HandleError(err)
				// no retries for anything else
				if retries.Count > 0 {
					return false
				}
				return true
			},
			kutil.NewTokenBucketRateLimiter(1, 10),
		),
		Handle: func(obj interface{}) error {
			config := obj.(*deployapi.DeploymentConfig)
			return configController.Handle(config)
		},
	}
}

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