Example #1
0
// History returns a revision-to-RC 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)
	}
	_, allOldRCs, err := deploymentutil.GetOldRCs(*deployment, h.c)
	if err != nil {
		return historyInfo, fmt.Errorf("failed to retrieve old RCs from deployment %s: %v", name, err)
	}
	newRC, err := deploymentutil.GetNewRC(*deployment, h.c)
	if err != nil {
		return historyInfo, fmt.Errorf("failed to retrieve new RC from deployment %s: %v", name, err)
	}
	allRCs := append(allOldRCs, newRC)
	for _, rc := range allRCs {
		v, err := deploymentutil.Revision(rc)
		if err != nil {
			continue
		}
		historyInfo.RevisionToTemplate[v] = rc.Spec.Template
		changeCause := getChangeCause(rc)
		if historyInfo.RevisionToTemplate[v].Annotations == nil {
			historyInfo.RevisionToTemplate[v].Annotations = make(map[string]string)
		}
		historyInfo.RevisionToTemplate[v].Annotations[ChangeCauseAnnotation] = changeCause
	}
	return historyInfo, nil
}
func (d *DeploymentController) getOldRCs(deployment extensions.Deployment) ([]*api.ReplicationController, error) {
	return deploymentutil.GetOldRCs(deployment, d.client)
}
Example #3
0
// testRollbackDeploymentRCNoRevision tests that deployment supports rollback even when there's old RC without revision.
// An old RC without revision is created, and then a deployment is created (v1). The deployment shouldn't add revision
// annotation to the old RC. Then rollback the deployment to last revision, and it should fail and emit related event.
// Then update the deployment to v2 and rollback it to v1 should succeed and emit related event, now the deployment
// becomes v3. Then rollback the deployment to v10 (doesn't exist in history) should fail and emit related event.
// Finally, rollback the deployment (v3) to v3 should be no-op and emit related event.
func testRollbackDeploymentRCNoRevision(f *Framework) {
	ns := f.Namespace.Name
	unversionedClient := f.Client
	c := clientset.FromUnversionedClient(f.Client)
	podName := "nginx"
	deploymentPodLabels := map[string]string{"name": podName}
	rcPodLabels := map[string]string{
		"name": podName,
		"pod":  "nginx",
	}

	rcName := "nginx-controller"
	rcReplicas := 0
	rc := newRC(rcName, rcReplicas, rcPodLabels, "nginx", "nginx")
	rc.Annotations = make(map[string]string)
	rc.Annotations["make"] = "difference"
	_, err := c.Legacy().ReplicationControllers(ns).Create(rc)
	Expect(err).NotTo(HaveOccurred())
	defer func() {
		Logf("deleting replication controller %s", rcName)
		Expect(c.Legacy().ReplicationControllers(ns).Delete(rcName, nil)).NotTo(HaveOccurred())
	}()

	// Create a deployment to create nginx pods, which have different template than the rc created above.
	deploymentName, deploymentImageName := "nginx-deployment", "nginx"
	deploymentReplicas := 1
	deploymentImage := "nginx"
	deploymentStrategyType := extensions.RollingUpdateDeploymentStrategyType
	Logf("Creating deployment %s", deploymentName)
	d := newDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType, nil)
	_, err = c.Extensions().Deployments(ns).Create(d)
	Expect(err).NotTo(HaveOccurred())
	defer func() {
		deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
		Expect(err).NotTo(HaveOccurred())
		Logf("deleting deployment %s", deploymentName)
		Expect(c.Extensions().Deployments(ns).Delete(deploymentName, nil)).NotTo(HaveOccurred())
		// TODO: remove this once we can delete rcs with deployment
		newRC, err := deploymentutil.GetNewRC(*deployment, c)
		Expect(err).NotTo(HaveOccurred())
		Expect(c.Legacy().ReplicationControllers(ns).Delete(newRC.Name, nil)).NotTo(HaveOccurred())
		oldRCs, _, err := deploymentutil.GetOldRCs(*deployment, c)
		Expect(err).NotTo(HaveOccurred())
		for _, oldRC := range oldRCs {
			Expect(c.Legacy().ReplicationControllers(ns).Delete(oldRC.Name, nil)).NotTo(HaveOccurred())
		}
	}()
	// Check that deployment is created fine.
	deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
	Expect(err).NotTo(HaveOccurred())

	// Verify that the required pods have come up.
	err = verifyPods(unversionedClient, ns, "nginx", false, deploymentReplicas)
	if err != nil {
		Logf("error in waiting for pods to come up: %s", err)
		Expect(err).NotTo(HaveOccurred())
	}
	deployment, err = c.Extensions().Deployments(ns).Get(deploymentName)
	Expect(err).NotTo(HaveOccurred())
	// DeploymentStatus should be appropriately updated.
	Expect(deployment.Status.Replicas).Should(Equal(deploymentReplicas))
	Expect(deployment.Status.UpdatedReplicas).Should(Equal(deploymentReplicas))

	// Check if it's updated to revision 1 correctly
	checkDeploymentRevision(c, ns, deploymentName, "1", deploymentImageName, deploymentImage)

	// Check that the rc we created still doesn't contain revision information
	rc, err = c.Legacy().ReplicationControllers(ns).Get(rcName)
	Expect(rc.Annotations[deploymentutil.RevisionAnnotation]).Should(Equal(""))

	// Update the deploymentRollback to rollback to last revision
	// Since there's only 1 revision in history, it should stay as revision 1
	revision := int64(0)
	Logf("rolling back deployment %s to last revision", deploymentName)
	rollback := newDeploymentRollback(deploymentName, nil, revision)
	err = c.Extensions().Deployments(ns).Rollback(rollback)
	Expect(err).NotTo(HaveOccurred())

	// There should be revision not found event since there's no last revision
	waitForEvents(unversionedClient, ns, deployment, 2)
	events, err := c.Events(ns).Search(deployment)
	Expect(err).NotTo(HaveOccurred())
	Expect(events.Items[1].Reason).Should(Equal(deploymentutil.RollbackRevisionNotFound))

	// Check if it's still revision 1
	checkDeploymentRevision(c, ns, deploymentName, "1", deploymentImageName, deploymentImage)

	// Update the deployment to create redis pods.
	updatedDeploymentImage := "redis"
	updatedDeploymentImageName := "redis"
	d.Spec.Template.Spec.Containers[0].Name = updatedDeploymentImageName
	d.Spec.Template.Spec.Containers[0].Image = updatedDeploymentImage
	Logf("updating deployment %s", deploymentName)
	_, err = c.Extensions().Deployments(ns).Update(d)
	Expect(err).NotTo(HaveOccurred())

	err = waitForDeploymentStatus(c, ns, deploymentName, deploymentReplicas, deploymentReplicas-1, deploymentReplicas+1, 0)
	Expect(err).NotTo(HaveOccurred())

	// Check if it's updated to revision 2 correctly
	checkDeploymentRevision(c, ns, deploymentName, "2", updatedDeploymentImageName, updatedDeploymentImage)

	// Update the deploymentRollback to rollback to revision 1
	revision = 1
	Logf("rolling back deployment %s to revision %d", deploymentName, revision)
	rollback = newDeploymentRollback(deploymentName, nil, revision)
	err = c.Extensions().Deployments(ns).Rollback(rollback)
	Expect(err).NotTo(HaveOccurred())

	err = waitForDeploymentStatus(c, ns, deploymentName, deploymentReplicas, deploymentReplicas-1, deploymentReplicas+1, 0)
	Expect(err).NotTo(HaveOccurred())

	// There should be rollback event after we rollback to revision 1
	waitForEvents(unversionedClient, ns, deployment, 5)
	events, err = c.Events(ns).Search(deployment)
	Expect(err).NotTo(HaveOccurred())
	Expect(events.Items[4].Reason).Should(Equal(deploymentutil.RollbackDone))

	// Check if it's updated to revision 3 correctly
	checkDeploymentRevision(c, ns, deploymentName, "3", deploymentImageName, deploymentImage)

	// Update the deploymentRollback to rollback to revision 10
	// Since there's no revision 10 in history, it should stay as revision 3, and emit an event
	revision = 10
	Logf("rolling back deployment %s to revision %d", deploymentName, revision)
	rollback = newDeploymentRollback(deploymentName, nil, revision)
	err = c.Extensions().Deployments(ns).Rollback(rollback)
	Expect(err).NotTo(HaveOccurred())

	// There should be revision not found event since there's no revision 10
	waitForEvents(unversionedClient, ns, deployment, 7)
	events, err = c.Events(ns).Search(deployment)
	Expect(err).NotTo(HaveOccurred())
	Expect(events.Items[6].Reason).Should(Equal(deploymentutil.RollbackRevisionNotFound))

	// Check if it's still revision 3
	checkDeploymentRevision(c, ns, deploymentName, "3", deploymentImageName, deploymentImage)

	// Update the deploymentRollback to rollback to revision 3
	// Since it's already revision 3, it should be no-op and emit an event
	revision = 3
	Logf("rolling back deployment %s to revision %d", deploymentName, revision)
	rollback = newDeploymentRollback(deploymentName, nil, revision)
	err = c.Extensions().Deployments(ns).Rollback(rollback)
	Expect(err).NotTo(HaveOccurred())

	// There should be revision template unchanged event since it's already revision 3
	waitForEvents(unversionedClient, ns, deployment, 8)
	events, err = c.Events(ns).Search(deployment)
	Expect(err).NotTo(HaveOccurred())
	Expect(events.Items[7].Reason).Should(Equal(deploymentutil.RollbackTemplateUnchanged))

	// Check if it's still revision 3
	checkDeploymentRevision(c, ns, deploymentName, "3", deploymentImageName, deploymentImage)
}
Example #4
0
// testRollbackDeployment tests that a deployment is created (revision 1) and updated (revision 2), and
// then rollback to revision 1 (should update template to revision 1, and then update revision 1 to 3),
// and then rollback to last revision.
func testRollbackDeployment(f *Framework) {
	ns := f.Namespace.Name
	unversionedClient := f.Client
	c := clientset.FromUnversionedClient(unversionedClient)
	podName := "nginx"
	deploymentPodLabels := map[string]string{"name": podName}

	// Create a deployment to create nginx pods.
	deploymentName, deploymentImageName := "nginx-deployment", "nginx"
	deploymentReplicas := 1
	deploymentImage := "nginx"
	deploymentStrategyType := extensions.RollingUpdateDeploymentStrategyType
	Logf("Creating deployment %s", deploymentName)
	d := newDeployment(deploymentName, deploymentReplicas, deploymentPodLabels, deploymentImageName, deploymentImage, deploymentStrategyType, nil)
	_, err := c.Extensions().Deployments(ns).Create(d)
	Expect(err).NotTo(HaveOccurred())
	defer func() {
		deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
		Expect(err).NotTo(HaveOccurred())
		Logf("deleting deployment %s", deploymentName)
		Expect(c.Extensions().Deployments(ns).Delete(deploymentName, nil)).NotTo(HaveOccurred())
		// TODO: remove this once we can delete rcs with deployment
		newRC, err := deploymentutil.GetNewRC(*deployment, c)
		Expect(err).NotTo(HaveOccurred())
		Expect(c.Legacy().ReplicationControllers(ns).Delete(newRC.Name, nil)).NotTo(HaveOccurred())
		oldRCs, _, err := deploymentutil.GetOldRCs(*deployment, c)
		Expect(err).NotTo(HaveOccurred())
		for _, oldRC := range oldRCs {
			Expect(c.Legacy().ReplicationControllers(ns).Delete(oldRC.Name, nil)).NotTo(HaveOccurred())
		}
	}()
	// Check that deployment is created fine.
	deployment, err := c.Extensions().Deployments(ns).Get(deploymentName)
	Expect(err).NotTo(HaveOccurred())

	// Verify that the required pods have come up.
	err = verifyPods(unversionedClient, ns, "nginx", false, deploymentReplicas)
	if err != nil {
		Logf("error in waiting for pods to come up: %s", err)
		Expect(err).NotTo(HaveOccurred())
	}
	deployment, err = c.Extensions().Deployments(ns).Get(deploymentName)
	Expect(err).NotTo(HaveOccurred())
	// DeploymentStatus should be appropriately updated.
	Expect(deployment.Status.Replicas).Should(Equal(deploymentReplicas))
	Expect(deployment.Status.UpdatedReplicas).Should(Equal(deploymentReplicas))

	// Check if it's updated to revision 1 correctly
	checkDeploymentRevision(c, ns, deploymentName, "1", deploymentImageName, deploymentImage)

	// Update the deployment to create redis pods.
	updatedDeploymentImage := "redis"
	updatedDeploymentImageName := "redis"
	d.Spec.Template.Spec.Containers[0].Name = updatedDeploymentImageName
	d.Spec.Template.Spec.Containers[0].Image = updatedDeploymentImage
	Logf("updating deployment %s", deploymentName)
	_, err = c.Extensions().Deployments(ns).Update(d)
	Expect(err).NotTo(HaveOccurred())

	err = waitForDeploymentStatus(c, ns, deploymentName, deploymentReplicas, deploymentReplicas-1, deploymentReplicas+1, 0)
	Expect(err).NotTo(HaveOccurred())

	// Check if it's updated to revision 2 correctly
	checkDeploymentRevision(c, ns, deploymentName, "2", updatedDeploymentImageName, updatedDeploymentImage)

	// Update the deploymentRollback to rollback to revision 1
	revision := int64(1)
	Logf("rolling back deployment %s to revision %d", deploymentName, revision)
	rollback := newDeploymentRollback(deploymentName, nil, revision)
	err = c.Extensions().Deployments(ns).Rollback(rollback)
	Expect(err).NotTo(HaveOccurred())

	err = waitForDeploymentStatus(c, ns, deploymentName, deploymentReplicas, deploymentReplicas-1, deploymentReplicas+1, 0)
	Expect(err).NotTo(HaveOccurred())

	// Check if it's updated to revision 3 correctly
	checkDeploymentRevision(c, ns, deploymentName, "3", deploymentImageName, deploymentImage)

	// Update the deploymentRollback to rollback to last revision
	revision = 0
	Logf("rolling back deployment %s to last revision", deploymentName)
	rollback = newDeploymentRollback(deploymentName, nil, revision)
	err = c.Extensions().Deployments(ns).Rollback(rollback)
	Expect(err).NotTo(HaveOccurred())

	err = waitForDeploymentStatus(c, ns, deploymentName, deploymentReplicas, deploymentReplicas-1, deploymentReplicas+1, 0)
	Expect(err).NotTo(HaveOccurred())

	// Check if it's updated to revision 4 correctly
	checkDeploymentRevision(c, ns, deploymentName, "4", updatedDeploymentImageName, updatedDeploymentImage)
}
func (d *DeploymentController) getOldRCs(deployment experimental.Deployment) ([]*api.ReplicationController, error) {
	return deploymentUtil.GetOldRCs(deployment, d.client)
}