// 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 testDeploymentLabelAdopted(f *framework.Framework) {
ns := f.Namespace.Name
// TODO: remove unversionedClient when the refactoring is done. Currently some
// functions like verifyPod still expects a unversioned#Client.
unversionedClient := f.Client
c := adapter.FromUnversionedClient(unversionedClient)
// Create nginx pods.
podName := "nginx"
podLabels := map[string]string{"name": podName}
rsName := "test-adopted-controller"
replicas := int32(3)
image := nginxImage
_, err := c.Extensions().ReplicaSets(ns).Create(newRS(rsName, replicas, podLabels, podName, image))
Expect(err).NotTo(HaveOccurred())
// Verify that the required pods have come up.
err = framework.VerifyPods(unversionedClient, ns, podName, false, 3)
if err != nil {
framework.Logf("error in waiting for pods to come up: %s", err)
Expect(err).NotTo(HaveOccurred())
}
// Create a nginx deployment to adopt the old rs.
deploymentName := "test-adopted-deployment"
framework.Logf("Creating deployment %s", deploymentName)
_, err = c.Extensions().Deployments(ns).Create(newDeployment(deploymentName, replicas, podLabels, podName, image, extensions.RollingUpdateDeploymentStrategyType, nil))
Expect(err).NotTo(HaveOccurred())
defer stopDeployment(c, f.Client, ns, deploymentName)
// Wait for it to be updated to revision 1
err = framework.WaitForDeploymentRevisionAndImage(c, ns, deploymentName, "1", image)
Expect(err).NotTo(HaveOccurred())
// The RS and pods should be relabeled before the status is updated by syncRollingUpdateDeployment
err = framework.WaitForDeploymentStatus(c, ns, deploymentName, replicas, replicas-1, replicas+1, 0)
Expect(err).NotTo(HaveOccurred())
// There should be no old RSs (overlapping RS)
deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
Expect(err).NotTo(HaveOccurred())
oldRSs, allOldRSs, newRS, err := deploymentutil.GetAllReplicaSets(deployment, c)
Expect(err).NotTo(HaveOccurred())
Expect(len(oldRSs)).Should(Equal(0))
Expect(len(allOldRSs)).Should(Equal(0))
// New RS should contain pod-template-hash in its selector, label, and template label
err = framework.CheckRSHashLabel(newRS)
Expect(err).NotTo(HaveOccurred())
// All pods targeted by the deployment should contain pod-template-hash in their labels, and there should be only 3 pods
selector, err := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
Expect(err).NotTo(HaveOccurred())
options := api.ListOptions{LabelSelector: selector}
pods, err := c.Core().Pods(ns).List(options)
Expect(err).NotTo(HaveOccurred())
err = framework.CheckPodHashLabel(pods)
Expect(err).NotTo(HaveOccurred())
Expect(int32(len(pods.Items))).Should(Equal(replicas))
}
// ViewHistory prints 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 old replica sets from deployment %s: %v", name, err)
}
historyInfo := make(map[int64]*api.PodTemplateSpec)
allRSs := allOldRSs
if newRS != nil {
allRSs = append(allRSs, newRS)
}
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
var revisions []int64
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
})
}
