// 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
}
// 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
}
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
}
// 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)
}
// 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
})
}