// NewDeployer makes a new Deployer from a kube client.
func NewDeployer(client kclient.Interface, oclient client.Interface, out, errOut io.Writer, until string) *Deployer {
	scaler, _ := kubectl.ScalerFor(kapi.Kind("ReplicationController"), client)
	return &Deployer{
		out:    out,
		errOut: errOut,
		until:  until,
		getDeployment: func(namespace, name string) (*kapi.ReplicationController, error) {
			return client.ReplicationControllers(namespace).Get(name)
		},
		getDeployments: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
			return client.ReplicationControllers(namespace).List(kapi.ListOptions{LabelSelector: deployutil.ConfigSelector(configName)})
		},
		scaler: scaler,
		strategyFor: func(config *deployapi.DeploymentConfig) (strategy.DeploymentStrategy, error) {
			switch config.Spec.Strategy.Type {
			case deployapi.DeploymentStrategyTypeRecreate:
				return recreate.NewRecreateDeploymentStrategy(client, oclient, client.Events(""), kapi.Codecs.UniversalDecoder(), out, errOut, until), nil
			case deployapi.DeploymentStrategyTypeRolling:
				recreate := recreate.NewRecreateDeploymentStrategy(client, oclient, client.Events(""), kapi.Codecs.UniversalDecoder(), out, errOut, until)
				return rolling.NewRollingDeploymentStrategy(config.Namespace, client, oclient, client.Events(""), kapi.Codecs.UniversalDecoder(), recreate, out, errOut, until), nil
			default:
				return nil, fmt.Errorf("unsupported strategy type: %s", config.Spec.Strategy.Type)
			}
		},
	}
}

// findTargetDeployment finds the deployment which is the rollback target by
// searching for deployments associated with config. If desiredVersion is >0,
// the deployment matching desiredVersion will be returned. If desiredVersion
// is <=0, the last completed deployment which is older than the config's
// version will be returned.
func (o *RollbackOptions) findTargetDeployment(config *deployapi.DeploymentConfig, desiredVersion int) (*kapi.ReplicationController, error) {
	// Find deployments for the config sorted by version descending.
	deployments, err := o.kc.ReplicationControllers(config.Namespace).List(deployutil.ConfigSelector(config.Name), fields.Everything())
	if err != nil {
		return nil, err
	}
	sort.Sort(deployutil.ByLatestVersionDesc(deployments.Items))

	// Find the target deployment for rollback. If a version was specified,
	// use the version for a search. Otherwise, use the last completed
	// deployment.
	var target *kapi.ReplicationController
	for _, deployment := range deployments.Items {
		version := deployutil.DeploymentVersionFor(&deployment)
		if desiredVersion > 0 {
			if version == desiredVersion {
				target = &deployment
				break
			}
		} else {
			if version < config.LatestVersion && deployutil.DeploymentStatusFor(&deployment) == deployapi.DeploymentStatusComplete {
				target = &deployment
				break
			}
		}
	}
	if target == nil {
		return nil, fmt.Errorf("couldn't find deployment for rollback")
	}
	return target, nil
}

// ViewHistory returns a description of all the history it can find for a deployment config.
func (h *DeploymentConfigHistoryViewer) ViewHistory(namespace, name string, revision int64) (string, error) {
	opts := kapi.ListOptions{LabelSelector: deployutil.ConfigSelector(name)}
	deploymentList, err := h.rn.ReplicationControllers(namespace).List(opts)
	if err != nil {
		return "", err
	}

	if len(deploymentList.Items) == 0 {
		return "No rollout history found.", nil
	}

	items := deploymentList.Items
	history := make([]*kapi.ReplicationController, 0, len(items))
	for i := range items {
		history = append(history, &items[i])
	}

	// Print details of a specific revision
	if revision > 0 {
		var desired *kapi.PodTemplateSpec
		// We could use a binary search here but brute-force is always faster to write
		for i := range history {
			rc := history[i]

			if deployutil.DeploymentVersionFor(rc) == revision {
				desired = rc.Spec.Template
				break
			}
		}

		if desired == nil {
			return "", fmt.Errorf("unable to find the specified revision")
		}

		buf := bytes.NewBuffer([]byte{})
		kubectl.DescribePodTemplate(desired, buf)
		return buf.String(), nil
	}

	sort.Sort(deployutil.ByLatestVersionAsc(history))

	return tabbedString(func(out *tabwriter.Writer) error {
		fmt.Fprintf(out, "REVISION\tSTATUS\tCAUSE\n")
		for i := range history {
			rc := history[i]

			rev := deployutil.DeploymentVersionFor(rc)
			status := deployutil.DeploymentStatusFor(rc)
			cause := rc.Annotations[deployapi.DeploymentStatusReasonAnnotation]
			if len(cause) == 0 {
				cause = "<unknown>"
			}
			fmt.Fprintf(out, "%d\t%s\t%s\n", rev, status, cause)
		}
		return nil
	})
}

func (r *ScaleREST) replicasForDeploymentConfig(namespace, configName string) (int32, error) {
	options := kapi.ListOptions{LabelSelector: util.ConfigSelector(configName)}
	rcList, err := r.rcNamespacer.ReplicationControllers(namespace).List(options)
	if err != nil {
		return 0, err
	}

	replicas := int32(0)
	for _, rc := range rcList.Items {
		replicas += rc.Spec.Replicas
	}

	return replicas, nil
}

func (r *ScaleREST) replicasForDeploymentConfig(namespace, configName string) (int, error) {
	selector := util.ConfigSelector(configName)
	rcList, err := r.rcNamespacer.ReplicationControllers(namespace).List(selector, fields.Everything())
	if err != nil {
		return 0, err
	}

	replicas := 0
	for _, rc := range rcList.Items {
		replicas += rc.Spec.Replicas
	}

	return replicas, nil
}

// cancel cancels any deployment process in progress for config.
func (o DeployOptions) cancel(config *deployapi.DeploymentConfig, out io.Writer) error {
	deployments, err := o.kubeClient.ReplicationControllers(config.Namespace).List(deployutil.ConfigSelector(config.Name), fields.Everything())
	if err != nil {
		return err
	}
	if len(deployments.Items) == 0 {
		fmt.Fprintf(out, "There have been no deployments for %s/%s\n", config.Namespace, config.Name)
		return nil
	}
	sort.Sort(deployutil.ByLatestVersionDesc(deployments.Items))
	failedCancellations := []string{}
	anyCancelled := false
	for _, deployment := range deployments.Items {
		status := deployutil.DeploymentStatusFor(&deployment)
		switch status {
		case deployapi.DeploymentStatusNew,
			deployapi.DeploymentStatusPending,
			deployapi.DeploymentStatusRunning:

			if deployutil.IsDeploymentCancelled(&deployment) {
				continue
			}

			deployment.Annotations[deployapi.DeploymentCancelledAnnotation] = deployapi.DeploymentCancelledAnnotationValue
			deployment.Annotations[deployapi.DeploymentStatusReasonAnnotation] = deployapi.DeploymentCancelledByUser
			_, err := o.kubeClient.ReplicationControllers(deployment.Namespace).Update(&deployment)
			if err == nil {
				fmt.Fprintf(out, "Cancelled deployment #%d\n", config.LatestVersion)
				anyCancelled = true
			} else {
				fmt.Fprintf(out, "Couldn't cancel deployment #%d (status: %s): %v\n", deployutil.DeploymentVersionFor(&deployment), status, err)
				failedCancellations = append(failedCancellations, strconv.Itoa(deployutil.DeploymentVersionFor(&deployment)))
			}
		}
	}
	if len(failedCancellations) > 0 {
		return fmt.Errorf("couldn't cancel deployment %s", strings.Join(failedCancellations, ", "))
	}
	if !anyCancelled {
		latest := &deployments.Items[0]
		timeAt := strings.ToLower(units.HumanDuration(time.Now().Sub(latest.CreationTimestamp.Time)))
		fmt.Fprintf(out, "No deployments are in progress (latest deployment #%d %s %s ago)\n",
			deployutil.DeploymentVersionFor(latest),
			strings.ToLower(string(deployutil.DeploymentStatusFor(latest))),
			timeAt)
	}
	return nil
}

// cancel cancels any deployment process in progress for config.
func (o *DeployOptions) cancel(config *deployapi.DeploymentConfig, out io.Writer) error {
	deployments, err := o.kubeClient.ReplicationControllers(config.Namespace).List(deployutil.ConfigSelector(config.Name))
	if err != nil {
		return err
	}
	if len(deployments.Items) == 0 {
		fmt.Fprintln(out, "no deployments found to cancel")
		return nil
	}
	failedCancellations := []string{}
	anyCancelled := false
	for _, deployment := range deployments.Items {
		status := deployutil.DeploymentStatusFor(&deployment)

		switch status {
		case deployapi.DeploymentStatusNew,
			deployapi.DeploymentStatusPending,
			deployapi.DeploymentStatusRunning:

			if deployutil.IsDeploymentCancelled(&deployment) {
				continue
			}

			deployment.Annotations[deployapi.DeploymentCancelledAnnotation] = deployapi.DeploymentCancelledAnnotationValue
			deployment.Annotations[deployapi.DeploymentStatusReasonAnnotation] = deployapi.DeploymentCancelledByUser
			_, err := o.kubeClient.ReplicationControllers(deployment.Namespace).Update(&deployment)
			if err == nil {
				fmt.Fprintf(out, "cancelled deployment #%d\n", config.LatestVersion)
				anyCancelled = true
			} else {
				fmt.Fprintf(out, "couldn't cancel deployment #%d (status: %s): %v\n", deployutil.DeploymentVersionFor(&deployment), status, err)
				failedCancellations = append(failedCancellations, strconv.Itoa(deployutil.DeploymentVersionFor(&deployment)))
			}
		}
	}
	if len(failedCancellations) > 0 {
		return fmt.Errorf("couldn't cancel deployment %s", strings.Join(failedCancellations, ", "))
	}
	if !anyCancelled {
		fmt.Fprintln(out, "no active deployments to cancel")
	}
	return nil
}

// Stop scales a replication controller via its deployment configuration down to
// zero replicas, waits for all of them to get deleted and then deletes both the
// replication controller and its deployment configuration.
func (reaper *DeploymentConfigReaper) Stop(namespace, name string, timeout time.Duration, gracePeriod *kapi.DeleteOptions) error {
	// If the config is already deleted, it may still have associated
	// deployments which didn't get cleaned up during prior calls to Stop. If
	// the config can't be found, still make an attempt to clean up the
	// deployments.
	//
	// It's important to delete the config first to avoid an undesirable side
	// effect which can cause the deployment to be re-triggered upon the
	// config's deletion. See https://github.com/openshift/origin/issues/2721
	// for more details.
	err := reaper.oc.DeploymentConfigs(namespace).Delete(name)
	configNotFound := kerrors.IsNotFound(err)
	if err != nil && !configNotFound {
		return err
	}

	// Clean up deployments related to the config.
	options := kapi.ListOptions{LabelSelector: util.ConfigSelector(name)}
	rcList, err := reaper.kc.ReplicationControllers(namespace).List(options)
	if err != nil {
		return err
	}
	rcReaper, err := kubectl.ReaperFor(kapi.Kind("ReplicationController"), reaper.kc)
	if err != nil {
		return err
	}

	// If there is neither a config nor any deployments, we can return NotFound.
	deployments := rcList.Items
	if configNotFound && len(deployments) == 0 {
		return kerrors.NewNotFound(kapi.Resource("deploymentconfig"), name)
	}
	for _, rc := range deployments {
		if err = rcReaper.Stop(rc.Namespace, rc.Name, timeout, gracePeriod); err != nil {
			// Better not error out here...
			glog.Infof("Cannot delete ReplicationController %s/%s: %v", rc.Namespace, rc.Name, err)
		}
	}

	return nil
}

// NewDeployer makes a new Deployer from a kube client.
func NewDeployer(client kclient.Interface) *Deployer {
	scaler, _ := kubectl.ScalerFor("ReplicationController", kubectl.NewScalerClient(client))
	return &Deployer{
		getDeployment: func(namespace, name string) (*kapi.ReplicationController, error) {
			return client.ReplicationControllers(namespace).Get(name)
		},
		getDeployments: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
			return client.ReplicationControllers(namespace).List(deployutil.ConfigSelector(configName))
		},
		scaler: scaler,
		strategyFor: func(config *deployapi.DeploymentConfig) (strategy.DeploymentStrategy, error) {
			switch config.Template.Strategy.Type {
			case deployapi.DeploymentStrategyTypeRecreate:
				return recreate.NewRecreateDeploymentStrategy(client, latest.Codec), nil
			case deployapi.DeploymentStrategyTypeRolling:
				recreate := recreate.NewRecreateDeploymentStrategy(client, latest.Codec)
				return rolling.NewRollingDeploymentStrategy(config.Namespace, client, latest.Codec, recreate), nil
			default:
				return nil, fmt.Errorf("unsupported strategy type: %s", config.Template.Strategy.Type)
			}
		},
	}
}

// Handle implements the loop that processes deployment configs. Since this controller started
// using caches, the provided config MUST be deep-copied beforehand (see work() in factory.go).
func (c *DeploymentConfigController) Handle(config *deployapi.DeploymentConfig) error {
	// There's nothing to reconcile until the version is nonzero.
	if config.Status.LatestVersion == 0 {
		return c.updateStatus(config, []kapi.ReplicationController{})
	}

	// Find all deployments owned by the deployment config.
	selector := deployutil.ConfigSelector(config.Name)
	existingDeployments, err := c.rcStore.ReplicationControllers(config.Namespace).List(selector)
	if err != nil {
		return err
	}

	// In case the deployment config has been marked for deletion, merely update its status with
	// the latest available information. Some deletions make take some time to complete so there
	// is value in doing this.
	if config.DeletionTimestamp != nil {
		return c.updateStatus(config, existingDeployments)
	}

	latestIsDeployed, latestDeployment := deployutil.LatestDeploymentInfo(config, existingDeployments)
	// If the latest deployment doesn't exist yet, cancel any running
	// deployments to allow them to be superceded by the new config version.
	awaitingCancellations := false
	if !latestIsDeployed {
		for i := range existingDeployments {
			deployment := existingDeployments[i]
			// Skip deployments with an outcome.
			if deployutil.IsTerminatedDeployment(&deployment) {
				continue
			}
			// Cancel running deployments.
			awaitingCancellations = true
			if !deployutil.IsDeploymentCancelled(&deployment) {

				// Retry faster on conflicts
				var updatedDeployment *kapi.ReplicationController
				if err := kclient.RetryOnConflict(kclient.DefaultBackoff, func() error {
					rc, err := c.rcStore.ReplicationControllers(deployment.Namespace).Get(deployment.Name)
					if kapierrors.IsNotFound(err) {
						return nil
					}
					if err != nil {
						return err
					}
					copied, err := deployutil.DeploymentDeepCopy(rc)
					if err != nil {
						return err
					}
					copied.Annotations[deployapi.DeploymentCancelledAnnotation] = deployapi.DeploymentCancelledAnnotationValue
					copied.Annotations[deployapi.DeploymentStatusReasonAnnotation] = deployapi.DeploymentCancelledNewerDeploymentExists
					updatedDeployment, err = c.rn.ReplicationControllers(copied.Namespace).Update(copied)
					return err
				}); err != nil {
					c.recorder.Eventf(config, kapi.EventTypeWarning, "DeploymentCancellationFailed", "Failed to cancel deployment %q superceded by version %d: %s", deployment.Name, config.Status.LatestVersion, err)
				} else {
					if updatedDeployment != nil {
						// replace the current deployment with the updated copy so that a future update has a chance at working
						existingDeployments[i] = *updatedDeployment
						c.recorder.Eventf(config, kapi.EventTypeNormal, "DeploymentCancelled", "Cancelled deployment %q superceded by version %d", deployment.Name, config.Status.LatestVersion)
					}
				}
			}
		}
	}
	// Wait for deployment cancellations before reconciling or creating a new
	// deployment to avoid competing with existing deployment processes.
	if awaitingCancellations {
		c.recorder.Eventf(config, kapi.EventTypeNormal, "DeploymentAwaitingCancellation", "Deployment of version %d awaiting cancellation of older running deployments", config.Status.LatestVersion)
		return fmt.Errorf("found previous inflight deployment for %s - requeuing", deployutil.LabelForDeploymentConfig(config))
	}
	// If the latest deployment already exists, reconcile existing deployments
	// and return early.
	if latestIsDeployed {
		// If the latest deployment is still running, try again later. We don't
		// want to compete with the deployer.
		if !deployutil.IsTerminatedDeployment(latestDeployment) {
			return c.updateStatus(config, existingDeployments)
		}

		return c.reconcileDeployments(existingDeployments, config)
	}
	// If the config is paused we shouldn't create new deployments for it.
	if config.Spec.Paused {
		// in order for revision history limit cleanup to work for paused
		// deployments, we need to trigger it here
		if err := c.cleanupOldDeployments(existingDeployments, config); err != nil {
			c.recorder.Eventf(config, kapi.EventTypeWarning, "DeploymentCleanupFailed", "Couldn't clean up deployments: %v", err)
		}

		return c.updateStatus(config, existingDeployments)
	}
	// No deployments are running and the latest deployment doesn't exist, so
	// create the new deployment.
	deployment, err := deployutil.MakeDeployment(config, c.codec)
	if err != nil {
		return fatalError(fmt.Sprintf("couldn't make deployment from (potentially invalid) deployment config %s: %v", deployutil.LabelForDeploymentConfig(config), err))
	}
//.........这里部分代码省略.........

// Describe returns the description of the latest deployments for a config
func (d *LatestDeploymentsDescriber) Describe(namespace, name string) (string, error) {
	var f formatter

	config, err := d.osClient.DeploymentConfigs(namespace).Get(name)
	if err != nil {
		return "", err
	}

	var deployments []kapi.ReplicationController
	if d.count == -1 || d.count > 1 {
		list, err := d.kubeClient.ReplicationControllers(namespace).List(kapi.ListOptions{LabelSelector: deployutil.ConfigSelector(name)})
		if err != nil && !kerrors.IsNotFound(err) {
			return "", err
		}
		deployments = list.Items
	} else {
		deploymentName := deployutil.LatestDeploymentNameForConfig(config)
		deployment, err := d.kubeClient.ReplicationControllers(config.Namespace).Get(deploymentName)
		if err != nil && !kerrors.IsNotFound(err) {
			return "", err
		}
		if deployment != nil {
			deployments = []kapi.ReplicationController{*deployment}
		}
	}

	g := graph.New()
	dcNode := deploygraph.EnsureDeploymentConfigNode(g, config)
	for i := range deployments {
		kubegraph.EnsureReplicationControllerNode(g, &deployments[i])
	}
	deployedges.AddTriggerEdges(g, dcNode)
	deployedges.AddDeploymentEdges(g, dcNode)
	activeDeployment, inactiveDeployments := deployedges.RelevantDeployments(g, dcNode)

	return tabbedString(func(out *tabwriter.Writer) error {
		descriptions := describeDeployments(f, dcNode, activeDeployment, inactiveDeployments, d.count)
		for i, description := range descriptions {
			descriptions[i] = fmt.Sprintf("%v %v", name, description)
		}
		printLines(out, "", 0, descriptions...)
		return nil
	})
}

func (c *ApplicationController) handleDeploymentConfigLabel(app *api.Application, itemIndex int) error {
	labelSelectorStr := fmt.Sprintf("%s.application.%s", app.Namespace, app.Name)

	client := c.Client.DeploymentConfigs(app.Namespace)

	resource, err := client.Get(app.Spec.Items[itemIndex].Name)
	if err != nil {
		if kerrors.IsNotFound(err) {
			c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "get deploymentconfig has error: %s", err.Error())
			c.deleteApplicationItem(app, itemIndex)
			return nil
		}
		return err
	}

	switch app.Status.Phase {
	case api.ApplicationActiveUpdate:
		if _, exists := resource.Labels[labelSelectorStr]; exists {
			//Active正常状态,当有新的更新时,如果这个label不存在,则新建
			return nil
		}
		fallthrough
	case api.ApplicationNew:
		if resource.Labels == nil {
			resource.Labels = make(map[string]string)
		}

		resource.Labels[labelSelectorStr] = app.Name

		for _, trigger := range resource.Spec.Triggers {
			if trigger.Type == deployapi.DeploymentTriggerOnConfigChange {
				trigger.Type = deployapi.DeploymentTriggerManual
			}
		}

		if _, err := client.Update(resource); err != nil {
			c.Recorder.Eventf(app, kapi.EventTypeWarning, addItemEvent(app.Spec.Items[itemIndex]), "error: %s", err.Error())
			return err
		}
		c.Recorder.Event(app, kapi.EventTypeWarning, "Application", addItemEvent(app.Spec.Items[itemIndex])+"success")

	case api.ApplicationTerminating:
		if !labelExistsOtherApplicationKey(resource.Labels, labelSelectorStr) {

			if err := client.Delete(app.Spec.Items[itemIndex].Name); err != nil {
				c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "delete deploymentconfig has error: %s", err.Error())
				return err
			}

			sel := deployutil.ConfigSelector(app.Spec.Items[itemIndex].Name)
			existingDeployments, err := c.KubeClient.ReplicationControllers(app.Namespace).List(kapi.ListOptions{LabelSelector: sel, FieldSelector: fields.Everything()})
			if err != nil && !kerrors.IsNotFound(err) {
				fmt.Printf("delete application dc %s err ", app.Spec.Items[itemIndex].Name, err)
			}

			for _, v := range existingDeployments.Items {
				if err := c.KubeClient.ReplicationControllers(app.Namespace).Delete(v.Name); err != nil {
					c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "delete deploymentconfig-replicationcontroller %s has error: %v", v.Name, err)
				}
				c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "delete deploymentconfig-replicationcontroller %s has error", v.Name)
			}

			existingPods, err := c.KubeClient.Pods(app.Namespace).List(kapi.ListOptions{LabelSelector: labels.Set{deployapi.DeploymentConfigLabel: app.Spec.Items[itemIndex].Name}.AsSelector(), FieldSelector: fields.Everything()})
			if err != nil && !kerrors.IsNotFound(err) {
				fmt.Printf("delete application dc %s err ", app.Spec.Items[itemIndex].Name, err)
			}

			for _, v := range existingPods.Items {
				if err := c.KubeClient.Pods(app.Namespace).Delete(v.Name, nil); err != nil {
					c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "delete deploymentconfig-pod %s has error: %v", v.Name, err)
				}
				c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "delete deploymentconfig-pod %s has error", v.Name)
			}

		} else {
			delete(resource.Labels, labelSelectorStr)
			if _, err := client.Update(resource); err != nil {
				c.Recorder.Eventf(app, kapi.EventTypeWarning, getItemErrEventReason(app.Status, app.Spec.Items[itemIndex]), "update deploymentconfig has error: %s", err.Error())
				return err
			}
		}

		app.Spec.Items = append(app.Spec.Items[:itemIndex], app.Spec.Items[itemIndex+1:]...)

		if len(app.Spec.Items) == 0 {
			if err := c.Client.Applications(app.Namespace).Delete(app.Name); err != nil {
				c.Recorder.Eventf(app, kapi.EventTypeWarning, "Clean Application", "delete application has error: %s", err.Error())
			}
		}

	case api.ApplicationTerminatingLabel:
		delete(resource.Labels, labelSelectorStr)
		if _, err := client.Update(resource); err != nil {
			return err
		}

		app.Spec.Items = append(app.Spec.Items[:itemIndex], app.Spec.Items[itemIndex+1:]...)

		if len(app.Spec.Items) == 0 {
			if err := c.Client.Applications(app.Namespace).Delete(app.Name); err != nil {
//.........这里部分代码省略.........

// registers all deployment related steps
func init() {
	RegisterSteps(func(c *Context) {

		c.Then(`^I should not have a deploymentconfig "(.+?)"$`, func(dcName string) {
			found, err := c.DeploymentConfigExists(dcName)
			if err != nil {
				c.Fail("Failed to check for Deployment Config '%s' existance: %v", dcName, err)
				return
			}

			if found {
				c.Fail("Deployment Config %s should not exists", dcName)
				return
			}
		})

		c.Then(`^I should have a deploymentconfig "(.+?)"$`, func(dcName string) {
			dc, err := c.GetDeploymentConfig(dcName)
			if err != nil {
				c.Fail("Failed to get Deployment Config '%s': %v", dcName, err)
				return
			}

			assert.Equal(c.T, dcName, dc.Name)
		})

		c.Given(`^I have a deploymentconfig "(.+?)"$`, func(dcName string) {
			dc, err := c.GetDeploymentConfig(dcName)
			if err != nil {
				c.Fail("Failed to get Deployment Config '%s': %v", dcName, err)
				return
			}

			assert.Equal(c.T, dcName, dc.Name)
		})

		c.When(`^the deploymentconfig "(.+?)" has at least (\d+) deployments?$`, func(dcName string, requiredDeployments int) {
			dc, err := c.GetDeploymentConfig(dcName)
			if err != nil {
				c.Fail("Failed to get Deployment Config '%s': %v", dcName, err)
				return
			}

			if dc.Status.LatestVersion < requiredDeployments {
				c.Fail("The Deployment Config '%s' has only %v deployments, instead of the %v deployments required", dcName, dc.Status.LatestVersion, requiredDeployments)
				return
			}
		})

		c.Then(`^the latest deployment of "(.+?)" should succeed in less than "(.+?)"$`, func(dcName string, timeout string) {
			timeoutDuration, err := time.ParseDuration(timeout)
			if err != nil {
				c.Fail("Failed to parse duration '%s': %v", timeout, err)
				return
			}

			dc, err := c.GetDeploymentConfig(dcName)
			if err != nil {
				c.Fail("Failed to get Deployment Config '%s': %v", dcName, err)
				return
			}

			latestDeploymentName := fmt.Sprintf("%s-%d", dc.Name, dc.Status.LatestVersion)

			success, err := c.IsDeploymentComplete(latestDeploymentName, timeoutDuration)
			if err != nil {
				c.Fail("Failed to check status of the deployment '%s': %v", latestDeploymentName, err)
				return
			}

			if !success {
				logs, err := c.GetDeploymentLogs(latestDeploymentName)
				if err != nil {
					fmt.Printf("Failed to get deployment logs '%v'\n", err)
				} else {
					fmt.Printf("Deployment logs '%v'\n", logs)
				}
				c.Fail("Deployment '%s' was not successful!", latestDeploymentName)
				return
			}
		})

		c.When(`^I have a successful deployment of "(.+?)"$`, func(dcName string) {
			rcList, err := c.GetReplicationControllers(deployutil.ConfigSelector(dcName))
			if err != nil {
				c.Fail("Failed to get Deployment Config '%s': %v", dcName, err)
				return
			}

			var successfulDeployment bool
			for _, rc := range rcList.Items {
				if status, ok := rc.Annotations[deployapi.DeploymentStatusAnnotation]; ok {
					switch status {
					case string(deployapi.DeploymentStatusComplete):
						successfulDeployment = true
					default:
					}
				}
			}
//.........这里部分代码省略.........

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

	eventBroadcaster := record.NewBroadcaster()
	eventBroadcaster.StartRecordingToSink(factory.KubeClient.Events(""))

	configController := &DeploymentConfigController{
		deploymentClient: &deploymentClientImpl{
			createDeploymentFunc: func(namespace string, deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
				return factory.KubeClient.ReplicationControllers(namespace).Create(deployment)
			},
			listDeploymentsForConfigFunc: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
				sel := deployutil.ConfigSelector(configName)
				list, err := factory.KubeClient.ReplicationControllers(namespace).List(sel)
				if err != nil {
					return nil, err
				}
				return list, nil
			},
			updateDeploymentFunc: func(namespace string, deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
				return factory.KubeClient.ReplicationControllers(namespace).Update(deployment)
			},
		},
		makeDeployment: func(config *deployapi.DeploymentConfig) (*kapi.ReplicationController, error) {
			return deployutil.MakeDeployment(config, factory.Codec)
		},
		recorder: eventBroadcaster.NewRecorder(kapi.EventSource{Component: "deployer"}),
	}

	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)
					kutil.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
				}
				kutil.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)
		},
	}
}

// Create creates a DeployerPodController.
func (factory *DeployerPodControllerFactory) Create() controller.RunnableController {
	deploymentLW := &deployutil.ListWatcherImpl{
		ListFunc: func() (runtime.Object, error) {
			return factory.KubeClient.ReplicationControllers(kapi.NamespaceAll).List(labels.Everything())
		},
		WatchFunc: func(resourceVersion string) (watch.Interface, error) {
			return factory.KubeClient.ReplicationControllers(kapi.NamespaceAll).Watch(labels.Everything(), fields.Everything(), resourceVersion)
		},
	}
	deploymentStore := cache.NewStore(cache.MetaNamespaceKeyFunc)
	cache.NewReflector(deploymentLW, &kapi.ReplicationController{}, deploymentStore, 2*time.Minute).Run()

	// TODO: These should be filtered somehow to include only the primary
	// deployer pod. For now, the controller is filtering.
	// TODO: Even with the label selector, this is inefficient on the backend
	// and we should work to consolidate namespace-spanning pod watches. For
	// example, the build infra is also watching pods across namespaces.
	podLW := &deployutil.ListWatcherImpl{
		ListFunc: func() (runtime.Object, error) {
			return factory.KubeClient.Pods(kapi.NamespaceAll).List(deployutil.AnyDeployerPodSelector(), fields.Everything())
		},
		WatchFunc: func(resourceVersion string) (watch.Interface, error) {
			return factory.KubeClient.Pods(kapi.NamespaceAll).Watch(deployutil.AnyDeployerPodSelector(), fields.Everything(), resourceVersion)
		},
	}
	podQueue := cache.NewFIFO(cache.MetaNamespaceKeyFunc)
	cache.NewReflector(podLW, &kapi.Pod{}, podQueue, 2*time.Minute).Run()

	podController := &DeployerPodController{
		deploymentClient: &deploymentClientImpl{
			getDeploymentFunc: func(namespace, name string) (*kapi.ReplicationController, error) {
				// Try to use the cache first. Trust hits and return them.
				example := &kapi.ReplicationController{ObjectMeta: kapi.ObjectMeta{Namespace: namespace, Name: name}}
				cached, exists, err := deploymentStore.Get(example)
				if err == nil && exists {
					return cached.(*kapi.ReplicationController), nil
				}
				// Double-check with the master for cache misses/errors, since those
				// are rare and API calls are expensive but more reliable.
				return factory.KubeClient.ReplicationControllers(namespace).Get(name)
			},
			updateDeploymentFunc: func(namespace string, deployment *kapi.ReplicationController) (*kapi.ReplicationController, error) {
				return factory.KubeClient.ReplicationControllers(namespace).Update(deployment)
			},
			listDeploymentsForConfigFunc: func(namespace, configName string) (*kapi.ReplicationControllerList, error) {
				return factory.KubeClient.ReplicationControllers(namespace).List(deployutil.ConfigSelector(configName))
			},
		},
		deployerPodsFor: func(namespace, name string) (*kapi.PodList, error) {
			return factory.KubeClient.Pods(namespace).List(deployutil.DeployerPodSelector(name), fields.Everything())
		},
		deletePod: func(namespace, name string) error {
			return factory.KubeClient.Pods(namespace).Delete(name, kapi.NewDeleteOptions(0))
		},
	}

	return &controller.RetryController{
		Queue: podQueue,
		RetryManager: controller.NewQueueRetryManager(
			podQueue,
			cache.MetaNamespaceKeyFunc,
			func(obj interface{}, err error, retries controller.Retry) bool {
				kutil.HandleError(err)
				// infinite retries for a transient error
				if _, isTransient := err.(transientError); isTransient {
					return true
				}
				// no retries for anything else
				if retries.Count > 0 {
					return false
				}
				return true
			},
			kutil.NewTokenBucketRateLimiter(1, 10),
		),
		Handle: func(obj interface{}) error {
			pod := obj.(*kapi.Pod)
			return podController.Handle(pod)
		},
	}
}

// Describe returns the description of a DeploymentConfig
func (d *DeploymentConfigDescriber) Describe(namespace, name string, settings kctl.DescriberSettings) (string, error) {
	var deploymentConfig *deployapi.DeploymentConfig
	if d.config != nil {
		// If a deployment config is already provided use that.
		// This is used by `oc rollback --dry-run`.
		deploymentConfig = d.config
	} else {
		var err error
		deploymentConfig, err = d.osClient.DeploymentConfigs(namespace).Get(name)
		if err != nil {
			return "", err
		}
	}

	return tabbedString(func(out *tabwriter.Writer) error {
		formatMeta(out, deploymentConfig.ObjectMeta)
		var (
			deploymentsHistory   []kapi.ReplicationController
			activeDeploymentName string
		)

		if d.config == nil {
			if rcs, err := d.kubeClient.ReplicationControllers(namespace).List(kapi.ListOptions{LabelSelector: deployutil.ConfigSelector(deploymentConfig.Name)}); err == nil {
				deploymentsHistory = rcs.Items
			}
		}

		if deploymentConfig.Status.LatestVersion == 0 {
			formatString(out, "Latest Version", "Not deployed")
		} else {
			formatString(out, "Latest Version", strconv.FormatInt(deploymentConfig.Status.LatestVersion, 10))
		}

		printDeploymentConfigSpec(d.kubeClient, *deploymentConfig, out)
		fmt.Fprintln(out)

		latestDeploymentName := deployutil.LatestDeploymentNameForConfig(deploymentConfig)
		if activeDeployment := deployutil.ActiveDeployment(deploymentConfig, deploymentsHistory); activeDeployment != nil {
			activeDeploymentName = activeDeployment.Name
		}

		var deployment *kapi.ReplicationController
		isNotDeployed := len(deploymentsHistory) == 0
		for _, item := range deploymentsHistory {
			if item.Name == latestDeploymentName {
				deployment = &item
			}
		}

		if isNotDeployed {
			formatString(out, "Latest Deployment", "<none>")
		} else {
			header := fmt.Sprintf("Deployment #%d (latest)", deployutil.DeploymentVersionFor(deployment))
			// Show details if the current deployment is the active one or it is the
			// initial deployment.
			printDeploymentRc(deployment, d.kubeClient, out, header, (deployment.Name == activeDeploymentName) || len(deploymentsHistory) == 1)
		}

		// We don't show the deployment history when running `oc rollback --dry-run`.
		if d.config == nil && !isNotDeployed {
			sorted := deploymentsHistory
			sort.Sort(sort.Reverse(rcutils.OverlappingControllers(sorted)))
			counter := 1
			for _, item := range sorted {
				if item.Name != latestDeploymentName && deploymentConfig.Name == deployutil.DeploymentConfigNameFor(&item) {
					header := fmt.Sprintf("Deployment #%d", deployutil.DeploymentVersionFor(&item))
					printDeploymentRc(&item, d.kubeClient, out, header, item.Name == activeDeploymentName)
					counter++
				}
				if counter == maxDisplayDeployments {
					break
				}
			}
		}

		if settings.ShowEvents {
			// Events
			if events, err := d.kubeClient.Events(deploymentConfig.Namespace).Search(deploymentConfig); err == nil && events != nil {
				latestDeploymentEvents := &kapi.EventList{Items: []kapi.Event{}}
				for i := len(events.Items); i != 0 && i > len(events.Items)-maxDisplayDeploymentsEvents; i-- {
					latestDeploymentEvents.Items = append(latestDeploymentEvents.Items, events.Items[i-1])
				}
				fmt.Fprintln(out)
				kctl.DescribeEvents(latestDeploymentEvents, out)
			}
		}
		return nil
	})
}

func (c *DeploymentConfigController) Handle(config *deployapi.DeploymentConfig) error {
	// There's nothing to reconcile until the version is nonzero.
	if config.Status.LatestVersion == 0 {
		glog.V(5).Infof("Waiting for first version of %q", deployutil.LabelForDeploymentConfig(config))
		return c.updateStatus(config)
	}

	// Find all deployments owned by the deploymentConfig.
	sel := deployutil.ConfigSelector(config.Name)
	existingDeployments, err := c.kubeClient.ReplicationControllers(config.Namespace).List(kapi.ListOptions{LabelSelector: sel})
	if err != nil {
		return err
	}

	latestIsDeployed, latestDeployment := deployutil.LatestDeploymentInfo(config, existingDeployments)
	// If the latest deployment doesn't exist yet, cancel any running
	// deployments to allow them to be superceded by the new config version.
	awaitingCancellations := false
	if !latestIsDeployed {
		for _, deployment := range existingDeployments.Items {
			// Skip deployments with an outcome.
			if deployutil.IsTerminatedDeployment(&deployment) {
				continue
			}
			// Cancel running deployments.
			awaitingCancellations = true
			if !deployutil.IsDeploymentCancelled(&deployment) {
				deployment.Annotations[deployapi.DeploymentCancelledAnnotation] = deployapi.DeploymentCancelledAnnotationValue
				deployment.Annotations[deployapi.DeploymentStatusReasonAnnotation] = deployapi.DeploymentCancelledNewerDeploymentExists
				_, err := c.kubeClient.ReplicationControllers(deployment.Namespace).Update(&deployment)
				if err != nil {
					c.recorder.Eventf(config, kapi.EventTypeWarning, "DeploymentCancellationFailed", "Failed to cancel deployment %q superceded by version %d: %s", deployment.Name, config.Status.LatestVersion, err)
				} else {
					c.recorder.Eventf(config, kapi.EventTypeNormal, "DeploymentCancelled", "Cancelled deployment %q superceded by version %d", deployment.Name, config.Status.LatestVersion)
				}
			}
		}
	}
	// Wait for deployment cancellations before reconciling or creating a new
	// deployment to avoid competing with existing deployment processes.
	if awaitingCancellations {
		c.recorder.Eventf(config, kapi.EventTypeNormal, "DeploymentAwaitingCancellation", "Deployment of version %d awaiting cancellation of older running deployments", config.Status.LatestVersion)
		// raise a transientError so that the deployment config can be re-queued
		return transientError(fmt.Sprintf("found previous inflight deployment for %s - requeuing", deployutil.LabelForDeploymentConfig(config)))
	}
	// If the latest deployment already exists, reconcile existing deployments
	// and return early.
	if latestIsDeployed {
		// If the latest deployment is still running, try again later. We don't
		// want to compete with the deployer.
		if !deployutil.IsTerminatedDeployment(latestDeployment) {
			return c.updateStatus(config)
		}
		return c.reconcileDeployments(existingDeployments, config)
	}
	// No deployments are running and the latest deployment doesn't exist, so
	// create the new deployment.
	deployment, err := deployutil.MakeDeployment(config, c.c