Golang controller.ActivePods函数代码示例

// 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()
	}
}

func (f *ring1Factory) AttachablePodForObject(object runtime.Object) (*api.Pod, error) {
	clientset, err := f.clientAccessFactory.ClientSetForVersion(nil)
	if err != nil {
		return nil, err
	}
	switch t := object.(type) {
	case *api.ReplicationController:
		selector := labels.SelectorFromSet(t.Spec.Selector)
		sortBy := func(pods []*v1.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
		pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
		return pod, err
	case *extensions.Deployment:
		selector, err := metav1.LabelSelectorAsSelector(t.Spec.Selector)
		if err != nil {
			return nil, fmt.Errorf("invalid label selector: %v", err)
		}
		sortBy := func(pods []*v1.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
		pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
		return pod, err
	case *batch.Job:
		selector, err := metav1.LabelSelectorAsSelector(t.Spec.Selector)
		if err != nil {
			return nil, fmt.Errorf("invalid label selector: %v", err)
		}
		sortBy := func(pods []*v1.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
		pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
		return pod, err
	case *api.Pod:
		return t, nil
	default:
		gvks, _, err := api.Scheme.ObjectKinds(object)
		if err != nil {
			return nil, err
		}
		return nil, fmt.Errorf("cannot attach to %v: not implemented", gvks[0])
	}
}

func TestGetFirstPod(t *testing.T) {
	labelSet := map[string]string{"test": "selector"}
	tests := []struct {
		name string

		podList  *api.PodList
		watching []watch.Event
		sortBy   func([]*api.Pod) sort.Interface

		expected    *api.Pod
		expectedNum int
		expectedErr bool
	}{
		{
			name:    "kubectl logs - two ready pods",
			podList: newPodList(2, -1, -1, labelSet),
			sortBy:  func(pods []*api.Pod) sort.Interface { return controller.ByLogging(pods) },
			expected: &api.Pod{
				ObjectMeta: api.ObjectMeta{
					Name:              "pod-1",
					Namespace:         api.NamespaceDefault,
					CreationTimestamp: unversioned.Date(2016, time.April, 1, 1, 0, 0, 0, time.UTC),
					Labels:            map[string]string{"test": "selector"},
				},
				Status: api.PodStatus{
					Conditions: []api.PodCondition{
						{
							Status: api.ConditionTrue,
							Type:   api.PodReady,
						},
					},
				},
			},
			expectedNum: 2,
		},
		{
			name:    "kubectl logs - one unhealthy, one healthy",
			podList: newPodList(2, -1, 1, labelSet),
			sortBy:  func(pods []*api.Pod) sort.Interface { return controller.ByLogging(pods) },
			expected: &api.Pod{
				ObjectMeta: api.ObjectMeta{
					Name:              "pod-2",
					Namespace:         api.NamespaceDefault,
					CreationTimestamp: unversioned.Date(2016, time.April, 1, 1, 0, 1, 0, time.UTC),
					Labels:            map[string]string{"test": "selector"},
				},
				Status: api.PodStatus{
					Conditions: []api.PodCondition{
						{
							Status: api.ConditionTrue,
							Type:   api.PodReady,
						},
					},
					ContainerStatuses: []api.ContainerStatus{{RestartCount: 5}},
				},
			},
			expectedNum: 2,
		},
		{
			name:    "kubectl attach - two ready pods",
			podList: newPodList(2, -1, -1, labelSet),
			sortBy:  func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) },
			expected: &api.Pod{
				ObjectMeta: api.ObjectMeta{
					Name:              "pod-1",
					Namespace:         api.NamespaceDefault,
					CreationTimestamp: unversioned.Date(2016, time.April, 1, 1, 0, 0, 0, time.UTC),
					Labels:            map[string]string{"test": "selector"},
				},
				Status: api.PodStatus{
					Conditions: []api.PodCondition{
						{
							Status: api.ConditionTrue,
							Type:   api.PodReady,
						},
					},
				},
			},
			expectedNum: 2,
		},
		{
			name:    "kubectl attach - wait for ready pod",
			podList: newPodList(1, 1, -1, labelSet),
			watching: []watch.Event{
				{
					Type: watch.Modified,
					Object: &api.Pod{
						ObjectMeta: api.ObjectMeta{
							Name:              "pod-1",
							Namespace:         api.NamespaceDefault,
							CreationTimestamp: unversioned.Date(2016, time.April, 1, 1, 0, 0, 0, time.UTC),
							Labels:            map[string]string{"test": "selector"},
						},
						Status: api.PodStatus{
							Conditions: []api.PodCondition{
								{
									Status: api.ConditionTrue,
									Type:   api.PodReady,
								},
							},
//.........这里部分代码省略.........

// manageReplicas checks and updates replicas for the given replication controller.
// Does NOT modify <filteredPods>.
func (rm *ReplicationManager) manageReplicas(filteredPods []*api.Pod, rc *api.ReplicationController) error {
	diff := len(filteredPods) - int(rc.Spec.Replicas)
	rcKey, err := controller.KeyFunc(rc)
	if err != nil {
		return err
	}
	if diff == 0 {
		return nil
	}

	if diff < 0 {
		diff *= -1
		if diff > rm.burstReplicas {
			diff = rm.burstReplicas
		}
		// TODO: Track UIDs of creates just like deletes. The problem currently
		// is we'd need to wait on the result of a create to record the pod's
		// UID, which would require locking *across* the create, which will turn
		// into a performance bottleneck. We should generate a UID for the pod
		// beforehand and store it via ExpectCreations.
		errCh := make(chan error, diff)
		rm.expectations.ExpectCreations(rcKey, diff)
		var wg sync.WaitGroup
		wg.Add(diff)
		glog.V(2).Infof("Too few %q/%q replicas, need %d, creating %d", rc.Namespace, rc.Name, rc.Spec.Replicas, diff)
		for i := 0; i < diff; i++ {
			go func() {
				defer wg.Done()
				var err error
				if rm.garbageCollectorEnabled {
					var trueVar = true
					controllerRef := &api.OwnerReference{
						APIVersion: getRCKind().GroupVersion().String(),
						Kind:       getRCKind().Kind,
						Name:       rc.Name,
						UID:        rc.UID,
						Controller: &trueVar,
					}
					err = rm.podControl.CreatePodsWithControllerRef(rc.Namespace, rc.Spec.Template, rc, controllerRef)
				} else {
					err = rm.podControl.CreatePods(rc.Namespace, rc.Spec.Template, rc)
				}
				if 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 controller %q/%q", rc.Namespace, rc.Name)
					rm.expectations.CreationObserved(rcKey)
					errCh <- err
					utilruntime.HandleError(err)
				}
			}()
		}
		wg.Wait()

		select {
		case err := <-errCh:
			// all errors have been reported before and they're likely to be the same, so we'll only return the first one we hit.
			if err != nil {
				return err
			}
		default:
		}

		return nil
	}

	if diff > rm.burstReplicas {
		diff = rm.burstReplicas
	}
	glog.V(2).Infof("Too many %q/%q replicas, need %d, deleting %d", rc.Namespace, rc.Name, rc.Spec.Replicas, diff)
	// No need to sort pods if we are about to delete all of them
	if rc.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))
	}
	// Snapshot the UIDs (ns/name) of the pods we're expecting to see
	// deleted, so we know to record their expectations exactly once either
	// when we see it as an update of the deletion timestamp, or as a delete.
	// Note that if the labels on a pod/rc change in a way that the pod gets
	// orphaned, the rs will only wake up after the expectations have
	// expired even if other pods are deleted.
	deletedPodKeys := []string{}
	for i := 0; i < diff; i++ {
		deletedPodKeys = append(deletedPodKeys, controller.PodKey(filteredPods[i]))
	}
	// We use pod namespace/name as a UID to wait for deletions, so if the
	// labels on a pod/rc change in a way that the pod gets orphaned, the
	// rc will only wake up after the expectation has expired.
	errCh := make(chan error, diff)
	rm.expectations.ExpectDeletions(rcKey, deletedPodKeys)
	var wg sync.WaitGroup
	wg.Add(diff)
	for i := 0; i < diff; i++ {
		go func(ix int) {
			defer wg.Done()
			if err := rm.podControl.DeletePod(rc.Namespace, filteredPods[ix].Name, rc); err != nil {
				// Decrement the expected number of deletes because the informer won't observe this deletion
//.........这里部分代码省略.........

// manageJob is the core method responsible for managing the number of running
// pods according to what is specified in the job.Spec.
func (jm *JobController) manageJob(activePods []*api.Pod, succeeded int, job *extensions.Job) int {
	var activeLock sync.Mutex
	active := len(activePods)
	parallelism := *job.Spec.Parallelism
	jobKey, err := controller.KeyFunc(job)
	if err != nil {
		glog.Errorf("Couldn't get key for job %#v: %v", job, err)
		return 0
	}

	if active > parallelism {
		diff := active - parallelism
		jm.expectations.ExpectDeletions(jobKey, diff)
		glog.V(4).Infof("Too many pods running job %q, need %d, deleting %d", jobKey, parallelism, diff)
		// 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(activePods))

		active -= diff
		wait := sync.WaitGroup{}
		wait.Add(diff)
		for i := 0; i < diff; i++ {
			go func(ix int) {
				defer wait.Done()
				if err := jm.podControl.DeletePod(job.Namespace, activePods[ix].Name); err != nil {
					defer util.HandleError(err)
					// Decrement the expected number of deletes because the informer won't observe this deletion
					jm.expectations.DeletionObserved(jobKey)
					activeLock.Lock()
					active++
					activeLock.Unlock()
				}
			}(i)
		}
		wait.Wait()

	} else if active < parallelism {
		// how many executions are left to run
		diff := *job.Spec.Completions - succeeded
		// limit to parallelism and count active pods as well
		if diff > parallelism {
			diff = parallelism
		}
		diff -= active
		jm.expectations.ExpectCreations(jobKey, diff)
		glog.V(4).Infof("Too few pods running job %q, need %d, creating %d", jobKey, parallelism, diff)

		active += diff
		wait := sync.WaitGroup{}
		wait.Add(diff)
		for i := 0; i < diff; i++ {
			go func() {
				defer wait.Done()
				if err := jm.podControl.CreatePods(job.Namespace, &job.Spec.Template, job); err != nil {
					defer util.HandleError(err)
					// Decrement the expected number of creates because the informer won't observe this pod
					jm.expectations.CreationObserved(jobKey)
					activeLock.Lock()
					active--
					activeLock.Unlock()
				}
			}()
		}
		wait.Wait()
	}

	return active
}

func (f *Factory) PodForResource(resource string, timeout time.Duration) (string, error) {
	sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return "", err
	}
	mapper, _ := f.Object(false)
	resourceType, name, err := util.ResolveResource(api.Resource("pods"), resource, mapper)
	if err != nil {
		return "", err
	}

	switch resourceType {
	case api.Resource("pods"):
		return name, nil
	case api.Resource("replicationcontrollers"):
		kc, err := f.Client()
		if err != nil {
			return "", err
		}
		rc, err := kc.ReplicationControllers(namespace).Get(name)
		if err != nil {
			return "", err
		}
		selector := labels.SelectorFromSet(rc.Spec.Selector)
		pod, _, err := cmdutil.GetFirstPod(kc, namespace, selector, timeout, sortBy)
		if err != nil {
			return "", err
		}
		return pod.Name, nil
	case deployapi.Resource("deploymentconfigs"):
		oc, kc, err := f.Clients()
		if err != nil {
			return "", err
		}
		dc, err := oc.DeploymentConfigs(namespace).Get(name)
		if err != nil {
			return "", err
		}
		selector := labels.SelectorFromSet(dc.Spec.Selector)
		pod, _, err := cmdutil.GetFirstPod(kc, namespace, selector, timeout, sortBy)
		if err != nil {
			return "", err
		}
		return pod.Name, nil
	case extensions.Resource("daemonsets"):
		kc, err := f.Client()
		if err != nil {
			return "", err
		}
		ds, err := kc.Extensions().DaemonSets(namespace).Get(name)
		if err != nil {
			return "", err
		}
		selector, err := unversioned.LabelSelectorAsSelector(ds.Spec.Selector)
		if err != nil {
			return "", err
		}
		pod, _, err := cmdutil.GetFirstPod(kc, namespace, selector, timeout, sortBy)
		if err != nil {
			return "", err
		}
		return pod.Name, nil
	case extensions.Resource("jobs"):
		kc, err := f.Client()
		if err != nil {
			return "", err
		}
		job, err := kc.Extensions().Jobs(namespace).Get(name)
		if err != nil {
			return "", err
		}
		return podNameForJob(job, kc, timeout, sortBy)
	case batch.Resource("jobs"):
		kc, err := f.Client()
		if err != nil {
			return "", err
		}
		job, err := kc.Batch().Jobs(namespace).Get(name)
		if err != nil {
			return "", err
		}
		return podNameForJob(job, kc, timeout, sortBy)
	default:
		return "", fmt.Errorf("remote shell for %s is not supported", resourceType)
	}
}

//.........这里部分代码省略.........
		if err != nil {
			return err
		}
		object, err := resource.AsVersionedObject(infos, len(infos) != 1, outputVersion, api.Codecs.LegacyCodec(outputVersion))
		if err != nil {
			return err
		}
		return printer.PrintObj(object, out)

	}
	kCanBeExposed := w.Factory.CanBeExposed
	w.CanBeExposed = func(kind unversioned.GroupKind) error {
		if kind == deployapi.Kind("DeploymentConfig") {
			return nil
		}
		return kCanBeExposed(kind)
	}
	kCanBeAutoscaled := w.Factory.CanBeAutoscaled
	w.CanBeAutoscaled = func(kind unversioned.GroupKind) error {
		if kind == deployapi.Kind("DeploymentConfig") {
			return nil
		}
		return kCanBeAutoscaled(kind)
	}
	kAttachablePodForObjectFunc := w.Factory.AttachablePodForObject
	w.AttachablePodForObject = func(object runtime.Object) (*api.Pod, error) {
		switch t := object.(type) {
		case *deployapi.DeploymentConfig:
			_, kc, err := w.Clients()
			if err != nil {
				return nil, err
			}
			selector := labels.SelectorFromSet(t.Spec.Selector)
			f := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
			pod, _, err := cmdutil.GetFirstPod(kc, t.Namespace, selector, 1*time.Minute, f)
			return pod, err
		default:
			return kAttachablePodForObjectFunc(object)
		}
	}
	kUpdatePodSpecForObject := w.Factory.UpdatePodSpecForObject
	w.UpdatePodSpecForObject = func(obj runtime.Object, fn func(*api.PodSpec) error) (bool, error) {
		switch t := obj.(type) {
		case *deployapi.DeploymentConfig:
			template := t.Spec.Template
			if template == nil {
				t.Spec.Template = template
				template = &api.PodTemplateSpec{}
			}
			return true, fn(&template.Spec)
		default:
			return kUpdatePodSpecForObject(obj, fn)
		}
	}
	kProtocolsForObject := w.Factory.ProtocolsForObject
	w.ProtocolsForObject = func(object runtime.Object) (map[string]string, error) {
		switch t := object.(type) {
		case *deployapi.DeploymentConfig:
			return getProtocols(t.Spec.Template.Spec), nil
		default:
			return kProtocolsForObject(object)
		}
	}

	kSwaggerSchemaFunc := w.Factory.SwaggerSchema
	w.Factory.SwaggerSchema = func(gvk unversioned.GroupVersionKind) (*swagger.ApiDeclaration, error) {

//.........这里部分代码省略.........
					dir = path.Join(cacheDir, version.String())
				}
				return &clientSwaggerSchema{
					c:        client,
					cacheDir: dir,
					mapper:   api.RESTMapper,
				}, nil
			}
			return validation.NullSchema{}, nil
		},
		SwaggerSchema: func(gvk unversioned.GroupVersionKind) (*swagger.ApiDeclaration, error) {
			version := gvk.GroupVersion()
			client, err := clients.ClientForVersion(&version)
			if err != nil {
				return nil, err
			}
			return client.Discovery().SwaggerSchema(version)
		},
		DefaultNamespace: func() (string, bool, error) {
			return clientConfig.Namespace()
		},
		Generators: func(cmdName string) map[string]kubectl.Generator {
			return DefaultGenerators(cmdName)
		},
		CanBeExposed: func(kind unversioned.GroupKind) error {
			switch kind {
			case api.Kind("ReplicationController"), api.Kind("Service"), api.Kind("Pod"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
				// nothing to do here
			default:
				return fmt.Errorf("cannot expose a %s", kind)
			}
			return nil
		},
		CanBeAutoscaled: func(kind unversioned.GroupKind) error {
			switch kind {
			case api.Kind("ReplicationController"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
				// nothing to do here
			default:
				return fmt.Errorf("cannot autoscale a %v", kind)
			}
			return nil
		},
		AttachablePodForObject: func(object runtime.Object) (*api.Pod, error) {
			client, err := clients.ClientForVersion(nil)
			if err != nil {
				return nil, err
			}
			switch t := object.(type) {
			case *api.ReplicationController:
				selector := labels.SelectorFromSet(t.Spec.Selector)
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *extensions.Deployment:
				selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
				if err != nil {
					return nil, fmt.Errorf("invalid label selector: %v", err)
				}
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *batch.Job:
				selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
				if err != nil {
					return nil, fmt.Errorf("invalid label selector: %v", err)
				}
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *api.Pod:
				return t, nil
			default:
				gvk, err := api.Scheme.ObjectKind(object)
				if err != nil {
					return nil, err
				}
				return nil, fmt.Errorf("cannot attach to %v: not implemented", gvk)
			}
		},
		EditorEnvs: func() []string {
			return []string{"KUBE_EDITOR", "EDITOR"}
		},
		PrintObjectSpecificMessage: func(obj runtime.Object, out io.Writer) {
			switch obj := obj.(type) {
			case *api.Service:
				if obj.Spec.Type == api.ServiceTypeNodePort {
					msg := fmt.Sprintf(
						`You have exposed your service on an external port on all nodes in your
cluster.  If you want to expose this service to the external internet, you may
need to set up firewall rules for the service port(s) (%s) to serve traffic.

See http://releases.k8s.io/HEAD/docs/user-guide/services-firewalls.md for more details.
`,
						makePortsString(obj.Spec.Ports, true))
					out.Write([]byte(msg))
				}
			}
		},
	}
}

// manageReplicas checks and updates replicas for the given ReplicaSet.
func (rsc *ReplicaSetController) manageReplicas(filteredPods []*api.Pod, rs *extensions.ReplicaSet) {
	diff := len(filteredPods) - int(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
		}
		// TODO: Track UIDs of creates just like deletes. The problem currently
		// is we'd need to wait on the result of a create to record the pod's
		// UID, which would require locking *across* the create, which will turn
		// into a performance bottleneck. We should generate a UID for the pod
		// beforehand and store it via ExpectCreations.
		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
		}
		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))
		}
		// Snapshot the UIDs (ns/name) of the pods we're expecting to see
		// deleted, so we know to record their expectations exactly once either
		// when we see it as an update of the deletion timestamp, or as a delete.
		// Note that if the labels on a pod/rs change in a way that the pod gets
		// orphaned, the rs will only wake up after the expectations have
		// expired even if other pods are deleted.
		deletedPodKeys := []string{}
		for i := 0; i < diff; i++ {
			deletedPodKeys = append(deletedPodKeys, controller.PodKey(filteredPods[i]))
		}
		rsc.expectations.ExpectDeletions(rsKey, deletedPodKeys)
		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
					podKey := controller.PodKey(filteredPods[ix])
					glog.V(2).Infof("Failed to delete %v, decrementing expectations for controller %q/%q", podKey, rs.Namespace, rs.Name)
					rsc.expectations.DeletionObserved(rsKey, podKey)
					utilruntime.HandleError(err)
				}
			}(i)
		}
		wait.Wait()
	}
}

// manageJob is the core method responsible for managing the number of running
// pods according to what is specified in the job.Spec.
func (jm *JobController) manageJob(activePods []*api.Pod, succeeded int32, job *batch.Job) int32 {
	var activeLock sync.Mutex
	active := int32(len(activePods))
	parallelism := *job.Spec.Parallelism
	jobKey, err := controller.KeyFunc(job)
	if err != nil {
		glog.Errorf("Couldn't get key for job %#v: %v", job, err)
		return 0
	}

	if active > parallelism {
		diff := active - parallelism
		jm.expectations.ExpectDeletions(jobKey, int(diff))
		glog.V(4).Infof("Too many pods running job %q, need %d, deleting %d", jobKey, parallelism, diff)
		// 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(activePods))

		active -= diff
		wait := sync.WaitGroup{}
		wait.Add(int(diff))
		for i := int32(0); i < diff; i++ {
			go func(ix int32) {
				defer wait.Done()
				if err := jm.podControl.DeletePod(job.Namespace, activePods[ix].Name, job); err != nil {
					defer utilruntime.HandleError(err)
					// Decrement the expected number of deletes because the informer won't observe this deletion
					jm.expectations.DeletionObserved(jobKey)
					activeLock.Lock()
					active++
					activeLock.Unlock()
				}
			}(i)
		}
		wait.Wait()

	} else if active < parallelism {
		wantActive := int32(0)
		if job.Spec.Completions == nil {
			// Job does not specify a number of completions.  Therefore, number active
			// should be equal to parallelism, unless the job has seen at least
			// once success, in which leave whatever is running, running.
			if succeeded > 0 {
				wantActive = active
			} else {
				wantActive = parallelism
			}
		} else {
			// Job specifies a specific number of completions.  Therefore, number
			// active should not ever exceed number of remaining completions.
			wantActive = *job.Spec.Completions - succeeded
			if wantActive > parallelism {
				wantActive = parallelism
			}
		}
		diff := wantActive - active
		if diff < 0 {
			glog.Errorf("More active than wanted: job %q, want %d, have %d", jobKey, wantActive, active)
			diff = 0
		}
		jm.expectations.ExpectCreations(jobKey, int(diff))
		glog.V(4).Infof("Too few pods running job %q, need %d, creating %d", jobKey, wantActive, diff)

		active += diff
		wait := sync.WaitGroup{}
		wait.Add(int(diff))
		for i := int32(0); i < diff; i++ {
			go func() {
				defer wait.Done()
				if err := jm.podControl.CreatePods(job.Namespace, &job.Spec.Template, job); err != nil {
					defer utilruntime.HandleError(err)
					// Decrement the expected number of creates because the informer won't observe this pod
					jm.expectations.CreationObserved(jobKey)
					activeLock.Lock()
					active--
					activeLock.Unlock()
				}
			}()
		}
		wait.Wait()
	}

	return active
}

//.........这里部分代码省略.........
			}
			sort.Sort(sort.Reverse(buildapi.BuildSliceByCreationTimestamp(builds.Items)))
			return oc.BuildLogs(t.Namespace).Get(builds.Items[0].Name, *bopts), nil
		default:
			return kLogsForObjectFunc(object, options)
		}
	}
	w.Printer = func(mapping *meta.RESTMapping, noHeaders, withNamespace, wide bool, showAll bool, showLabels, absoluteTimestamps bool, columnLabels []string) (kubectl.ResourcePrinter, error) {
		return describe.NewHumanReadablePrinter(noHeaders, withNamespace, wide, showAll, showLabels, absoluteTimestamps, columnLabels), nil
	}
	kCanBeExposed := w.Factory.CanBeExposed
	w.CanBeExposed = func(kind unversioned.GroupKind) error {
		if kind == deployapi.Kind("DeploymentConfig") {
			return nil
		}
		return kCanBeExposed(kind)
	}
	kCanBeAutoscaled := w.Factory.CanBeAutoscaled
	w.CanBeAutoscaled = func(kind unversioned.GroupKind) error {
		if kind == deployapi.Kind("DeploymentConfig") {
			return nil
		}
		return kCanBeAutoscaled(kind)
	}
	kAttachablePodForObjectFunc := w.Factory.AttachablePodForObject
	w.AttachablePodForObject = func(object runtime.Object) (*api.Pod, error) {
		switch t := object.(type) {
		case *deployapi.DeploymentConfig:
			_, kc, err := w.Clients()
			if err != nil {
				return nil, err
			}
			selector := labels.SelectorFromSet(t.Spec.Selector)
			f := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
			pod, _, err := cmdutil.GetFirstPod(kc, t.Namespace, selector, 1*time.Minute, f)
			return pod, err
		default:
			return kAttachablePodForObjectFunc(object)
		}
	}
	kProtocolsForObject := w.Factory.ProtocolsForObject
	w.ProtocolsForObject = func(object runtime.Object) (map[string]string, error) {
		switch t := object.(type) {
		case *deployapi.DeploymentConfig:
			return getProtocols(t.Spec.Template.Spec), nil
		default:
			return kProtocolsForObject(object)
		}
	}

	kSwaggerSchemaFunc := w.Factory.SwaggerSchema
	w.Factory.SwaggerSchema = func(gvk unversioned.GroupVersionKind) (*swagger.ApiDeclaration, error) {
		if !latest.OriginKind(gvk) {
			return kSwaggerSchemaFunc(gvk)
		}
		// TODO: we need to register the OpenShift API under the Kube group, and start returning the OpenShift
		// group from the scheme.
		oc, _, err := w.Clients()
		if err != nil {
			return nil, err
		}
		return w.OriginSwaggerSchema(oc.RESTClient, gvk.GroupVersion())
	}

	w.EditorEnvs = func() []string {
		return []string{"OC_EDITOR", "EDITOR"}

//.........这里部分代码省略.........
		},
		DefaultNamespace: func() (string, bool, error) {
			return clientConfig.Namespace()
		},
		Generators: func(cmdName string) map[string]kubectl.Generator {
			return DefaultGenerators(cmdName)
		},
		CanBeExposed: func(kind unversioned.GroupKind) error {
			switch kind {
			case api.Kind("ReplicationController"), api.Kind("Service"), api.Kind("Pod"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
				// nothing to do here
			default:
				return fmt.Errorf("cannot expose a %s", kind)
			}
			return nil
		},
		CanBeAutoscaled: func(kind unversioned.GroupKind) error {
			switch kind {
			case api.Kind("ReplicationController"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
				// nothing to do here
			default:
				return fmt.Errorf("cannot autoscale a %v", kind)
			}
			return nil
		},
		AttachablePodForObject: func(object runtime.Object) (*api.Pod, error) {
			client, err := clients.ClientForVersion(nil)
			if err != nil {
				return nil, err
			}
			switch t := object.(type) {
			case *api.ReplicationController:
				selector := labels.SelectorFromSet(t.Spec.Selector)
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *extensions.Deployment:
				selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
				if err != nil {
					return nil, fmt.Errorf("invalid label selector: %v", err)
				}
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *batch.Job:
				selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
				if err != nil {
					return nil, fmt.Errorf("invalid label selector: %v", err)
				}
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(client, t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *api.Pod:
				return t, nil
			default:
				gvks, _, err := api.Scheme.ObjectKinds(object)
				if err != nil {
					return nil, err
				}
				return nil, fmt.Errorf("cannot attach to %v: not implemented", gvks[0])
			}
		},
		// UpdatePodSpecForObject update the pod specification for the provided object
		UpdatePodSpecForObject: func(obj runtime.Object, fn func(*api.PodSpec) error) (bool, error) {
			// TODO: replace with a swagger schema based approach (identify pod template via schema introspection)
			switch t := obj.(type) {

//.........这里部分代码省略.........
		},
		DefaultNamespace: func() (string, bool, error) {
			return clientConfig.Namespace()
		},
		Generators: func(cmdName string) map[string]kubectl.Generator {
			return DefaultGenerators(cmdName)
		},
		CanBeExposed: func(kind unversioned.GroupKind) error {
			switch kind {
			case api.Kind("ReplicationController"), api.Kind("Service"), api.Kind("Pod"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
				// nothing to do here
			default:
				return fmt.Errorf("cannot expose a %s", kind)
			}
			return nil
		},
		CanBeAutoscaled: func(kind unversioned.GroupKind) error {
			switch kind {
			case api.Kind("ReplicationController"), extensions.Kind("Deployment"), extensions.Kind("ReplicaSet"):
				// nothing to do here
			default:
				return fmt.Errorf("cannot autoscale a %v", kind)
			}
			return nil
		},
		AttachablePodForObject: func(object runtime.Object) (*api.Pod, error) {
			clientset, err := clients.ClientSetForVersion(nil)
			if err != nil {
				return nil, err
			}
			switch t := object.(type) {
			case *api.ReplicationController:
				selector := labels.SelectorFromSet(t.Spec.Selector)
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *extensions.Deployment:
				selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
				if err != nil {
					return nil, fmt.Errorf("invalid label selector: %v", err)
				}
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *batch.Job:
				selector, err := unversioned.LabelSelectorAsSelector(t.Spec.Selector)
				if err != nil {
					return nil, fmt.Errorf("invalid label selector: %v", err)
				}
				sortBy := func(pods []*api.Pod) sort.Interface { return sort.Reverse(controller.ActivePods(pods)) }
				pod, _, err := GetFirstPod(clientset.Core(), t.Namespace, selector, 1*time.Minute, sortBy)
				return pod, err
			case *api.Pod:
				return t, nil
			default:
				gvks, _, err := api.Scheme.ObjectKinds(object)
				if err != nil {
					return nil, err
				}
				return nil, fmt.Errorf("cannot attach to %v: not implemented", gvks[0])
			}
		},
		// UpdatePodSpecForObject update the pod specification for the provided object
		UpdatePodSpecForObject: func(obj runtime.Object, fn func(*api.PodSpec) error) (bool, error) {
			// TODO: replace with a swagger schema based approach (identify pod template via schema introspection)
			switch t := obj.(type) {