// Status returns a message describing deployment status, and a bool value indicating if the status is considered done
func (s *DeploymentStatusViewer) Status(namespace, name string, revision int64) (string, bool, error) {
	deployment, err := s.c.Deployments(namespace).Get(name)
	if err != nil {
		return "", false, err
	}
	if revision > 0 {
		deploymentRev, err := util.Revision(deployment)
		if err != nil {
			return "", false, fmt.Errorf("cannot get the revision of deployment %q: %v", deployment.Name, err)
		}
		if revision != deploymentRev {
			return "", false, fmt.Errorf("desired revision (%d) is different from the running revision (%d)", revision, deploymentRev)
		}
	}
	if deployment.Generation <= deployment.Status.ObservedGeneration {
		if deployment.Status.UpdatedReplicas < deployment.Spec.Replicas {
			return fmt.Sprintf("Waiting for rollout to finish: %d out of %d new replicas have been updated...\n", deployment.Status.UpdatedReplicas, deployment.Spec.Replicas), false, nil
		}
		if deployment.Status.Replicas > deployment.Status.UpdatedReplicas {
			return fmt.Sprintf("Waiting for rollout to finish: %d old replicas are pending termination...\n", deployment.Status.Replicas-deployment.Status.UpdatedReplicas), false, nil
		}
		if deployment.Status.AvailableReplicas < deployment.Status.UpdatedReplicas {
			return fmt.Sprintf("Waiting for rollout to finish: %d of %d updated replicas are available...\n", deployment.Status.AvailableReplicas, deployment.Status.UpdatedReplicas), false, nil
		}
		return fmt.Sprintf("deployment %q successfully rolled out\n", name), true, nil
	}
	return fmt.Sprintf("Waiting for deployment spec update to be observed...\n"), false, nil
}
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// History returns a revision-to-replicaset map as the revision history of a deployment
func (h *DeploymentHistoryViewer) History(namespace, name string) (HistoryInfo, error) {
	historyInfo := HistoryInfo{
		RevisionToTemplate: make(map[int64]*api.PodTemplateSpec),
	}
	deployment, err := h.c.Extensions().Deployments(namespace).Get(name)
	if err != nil {
		return historyInfo, fmt.Errorf("failed to retrieve deployment %s: %v", name, err)
	}
	_, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(deployment, h.c)
	if err != nil {
		return historyInfo, fmt.Errorf("failed to retrieve replica sets from deployment %s: %v", name, err)
	}
	allRSs := allOldRSs
	if newRS != nil {
		allRSs = append(allRSs, newRS)
	}
	for _, rs := range allRSs {
		v, err := deploymentutil.Revision(rs)
		if err != nil {
			continue
		}
		historyInfo.RevisionToTemplate[v] = &rs.Spec.Template
		changeCause := getChangeCause(rs)
		if historyInfo.RevisionToTemplate[v].Annotations == nil {
			historyInfo.RevisionToTemplate[v].Annotations = make(map[string]string)
		}
		if len(changeCause) > 0 {
			historyInfo.RevisionToTemplate[v].Annotations[ChangeCauseAnnotation] = changeCause
		}
	}
	return historyInfo, nil
}
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func simpleDryRun(deployment *extensions.Deployment, c clientset.Interface, toRevision int64) (string, error) {
	externalDeployment := &externalextensions.Deployment{}
	if err := api.Scheme.Convert(deployment, externalDeployment, nil); err != nil {
		return "", fmt.Errorf("failed to convert deployment, %v", err)
	}
	versionedClient := versionedClientsetForDeployment(c)
	_, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(externalDeployment, versionedClient)
	if err != nil {
		return "", fmt.Errorf("failed to retrieve replica sets from deployment %s: %v", deployment.Name, err)
	}
	allRSs := allOldRSs
	if newRS != nil {
		allRSs = append(allRSs, newRS)
	}

	revisionToSpec := make(map[int64]*v1.PodTemplateSpec)
	for _, rs := range allRSs {
		v, err := deploymentutil.Revision(rs)
		if err != nil {
			continue
		}
		revisionToSpec[v] = &rs.Spec.Template
	}

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

	if toRevision > 0 {
		template, ok := revisionToSpec[toRevision]
		if !ok {
			return "", fmt.Errorf("unable to find specified revision")
		}
		buf := bytes.NewBuffer([]byte{})
		internalTemplate := &api.PodTemplateSpec{}
		if err := v1.Convert_v1_PodTemplateSpec_To_api_PodTemplateSpec(template, internalTemplate, nil); err != nil {
			return "", fmt.Errorf("failed to convert podtemplate, %v", err)
		}
		DescribePodTemplate(internalTemplate, buf)
		return buf.String(), nil
	}

	// Sort the revisionToSpec map by revision
	revisions := make([]int64, 0, len(revisionToSpec))
	for r := range revisionToSpec {
		revisions = append(revisions, r)
	}
	sliceutil.SortInts64(revisions)

	template, _ := revisionToSpec[revisions[len(revisions)-1]]
	buf := bytes.NewBuffer([]byte{})
	buf.WriteString("\n")
	internalTemplate := &api.PodTemplateSpec{}
	if err := v1.Convert_v1_PodTemplateSpec_To_api_PodTemplateSpec(template, internalTemplate, nil); err != nil {
		return "", fmt.Errorf("failed to convert podtemplate, %v", err)
	}
	DescribePodTemplate(internalTemplate, buf)
	return buf.String(), nil
}
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// Rolling back to a revision; no-op if the toRevision is deployment's current revision
func (dc *DeploymentController) rollback(deployment *extensions.Deployment, toRevision *int64) (*extensions.Deployment, error) {
	newRS, allOldRSs, err := dc.getAllReplicaSetsAndSyncRevision(deployment, true)
	if err != nil {
		return nil, err
	}
	allRSs := append(allOldRSs, newRS)
	// If rollback revision is 0, rollback to the last revision
	if *toRevision == 0 {
		if *toRevision = deploymentutil.LastRevision(allRSs); *toRevision == 0 {
			// If we still can't find the last revision, gives up rollback
			dc.emitRollbackWarningEvent(deployment, deploymentutil.RollbackRevisionNotFound, "Unable to find last revision.")
			// Gives up rollback
			return dc.updateDeploymentAndClearRollbackTo(deployment)
		}
	}
	for _, rs := range allRSs {
		v, err := deploymentutil.Revision(rs)
		if err != nil {
			glog.V(4).Infof("Unable to extract revision from deployment's replica set %q: %v", rs.Name, err)
			continue
		}
		if v == *toRevision {
			glog.V(4).Infof("Found replica set %q with desired revision %d", rs.Name, v)
			// rollback by copying podTemplate.Spec from the replica set
			// revision number will be incremented during the next getAllReplicaSetsAndSyncRevision call
			// no-op if the the spec matches current deployment's podTemplate.Spec
			deployment, performedRollback, err := dc.rollbackToTemplate(deployment, rs)
			if performedRollback && err == nil {
				dc.emitRollbackNormalEvent(deployment, fmt.Sprintf("Rolled back deployment %q to revision %d", deployment.Name, *toRevision))
			}
			return deployment, err
		}
	}
	dc.emitRollbackWarningEvent(deployment, deploymentutil.RollbackRevisionNotFound, "Unable to find the revision to rollback to.")
	// Gives up rollback
	return dc.updateDeploymentAndClearRollbackTo(deployment)
}
Esempio n. 5
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// ViewHistory returns a revision-to-replicaset map as the revision history of a deployment
func (h *DeploymentHistoryViewer) ViewHistory(namespace, name string, revision int64) (string, error) {
	deployment, err := h.c.Extensions().Deployments(namespace).Get(name)
	if err != nil {
		return "", fmt.Errorf("failed to retrieve deployment %s: %v", name, err)
	}
	_, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(deployment, h.c)
	if err != nil {
		return "", fmt.Errorf("failed to retrieve replica sets from deployment %s: %v", name, err)
	}
	allRSs := allOldRSs
	if newRS != nil {
		allRSs = append(allRSs, newRS)
	}

	historyInfo := make(map[int64]*api.PodTemplateSpec)
	for _, rs := range allRSs {
		v, err := deploymentutil.Revision(rs)
		if err != nil {
			continue
		}
		historyInfo[v] = &rs.Spec.Template
		changeCause := getChangeCause(rs)
		if historyInfo[v].Annotations == nil {
			historyInfo[v].Annotations = make(map[string]string)
		}
		if len(changeCause) > 0 {
			historyInfo[v].Annotations[ChangeCauseAnnotation] = changeCause
		}
	}

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

	if revision > 0 {
		// Print details of a specific revision
		template, ok := historyInfo[revision]
		if !ok {
			return "", fmt.Errorf("unable to find the specified revision")
		}
		buf := bytes.NewBuffer([]byte{})
		DescribePodTemplate(template, buf)
		return buf.String(), nil
	}

	// Sort the revisionToChangeCause map by revision
	revisions := make([]int64, 0, len(historyInfo))
	for r := range historyInfo {
		revisions = append(revisions, r)
	}
	sliceutil.SortInts64(revisions)

	return tabbedString(func(out io.Writer) error {
		fmt.Fprintf(out, "REVISION\tCHANGE-CAUSE\n")
		for _, r := range revisions {
			// Find the change-cause of revision r
			changeCause := historyInfo[r].Annotations[ChangeCauseAnnotation]
			if len(changeCause) == 0 {
				changeCause = "<none>"
			}
			fmt.Fprintf(out, "%d\t%s\n", r, changeCause)
		}
		return nil
	})
}