Golang api.GetExistingContainerStatus函数代码示例

func runLivenessTest(f *framework.Framework, pod *api.Pod, expectNumRestarts int, timeout time.Duration) {
	podClient := f.PodClient()
	ns := f.Namespace.Name
	Expect(pod.Spec.Containers).NotTo(BeEmpty())
	containerName := pod.Spec.Containers[0].Name
	// At the end of the test, clean up by removing the pod.
	defer func() {
		By("deleting the pod")
		podClient.Delete(pod.Name, api.NewDeleteOptions(0))
	}()
	By(fmt.Sprintf("Creating pod %s in namespace %s", pod.Name, ns))
	podClient.Create(pod)

	// Wait until the pod is not pending. (Here we need to check for something other than
	// 'Pending' other than checking for 'Running', since when failures occur, we go to
	// 'Terminated' which can cause indefinite blocking.)
	framework.ExpectNoError(framework.WaitForPodNotPending(f.ClientSet, ns, pod.Name, pod.ResourceVersion),
		fmt.Sprintf("starting pod %s in namespace %s", pod.Name, ns))
	framework.Logf("Started pod %s in namespace %s", pod.Name, ns)

	// Check the pod's current state and verify that restartCount is present.
	By("checking the pod's current state and verifying that restartCount is present")
	pod, err := podClient.Get(pod.Name)
	framework.ExpectNoError(err, fmt.Sprintf("getting pod %s in namespace %s", pod.Name, ns))
	initialRestartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, containerName).RestartCount
	framework.Logf("Initial restart count of pod %s is %d", pod.Name, initialRestartCount)

	// Wait for the restart state to be as desired.
	deadline := time.Now().Add(timeout)
	lastRestartCount := initialRestartCount
	observedRestarts := int32(0)
	for start := time.Now(); time.Now().Before(deadline); time.Sleep(2 * time.Second) {
		pod, err = podClient.Get(pod.Name)
		framework.ExpectNoError(err, fmt.Sprintf("getting pod %s", pod.Name))
		restartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, containerName).RestartCount
		if restartCount != lastRestartCount {
			framework.Logf("Restart count of pod %s/%s is now %d (%v elapsed)",
				ns, pod.Name, restartCount, time.Since(start))
			if restartCount < lastRestartCount {
				framework.Failf("Restart count should increment monotonically: restart cont of pod %s/%s changed from %d to %d",
					ns, pod.Name, lastRestartCount, restartCount)
			}
		}
		observedRestarts = restartCount - initialRestartCount
		if expectNumRestarts > 0 && int(observedRestarts) >= expectNumRestarts {
			// Stop if we have observed more than expectNumRestarts restarts.
			break
		}
		lastRestartCount = restartCount
	}

	// If we expected 0 restarts, fail if observed any restart.
	// If we expected n restarts (n > 0), fail if we observed < n restarts.
	if (expectNumRestarts == 0 && observedRestarts > 0) || (expectNumRestarts > 0 &&
		int(observedRestarts) < expectNumRestarts) {
		framework.Failf("pod %s/%s - expected number of restarts: %d, found restarts: %d",
			ns, pod.Name, expectNumRestarts, observedRestarts)
	}
}

func runLivenessTest(c *client.Client, ns string, podDescr *api.Pod, expectNumRestarts int) {
	By(fmt.Sprintf("Creating pod %s in namespace %s", podDescr.Name, ns))
	_, err := c.Pods(ns).Create(podDescr)
	expectNoError(err, fmt.Sprintf("creating pod %s", podDescr.Name))

	// At the end of the test, clean up by removing the pod.
	defer func() {
		By("deleting the pod")
		c.Pods(ns).Delete(podDescr.Name, api.NewDeleteOptions(0))
	}()

	// Wait until the pod is not pending. (Here we need to check for something other than
	// 'Pending' other than checking for 'Running', since when failures occur, we go to
	// 'Terminated' which can cause indefinite blocking.)
	expectNoError(waitForPodNotPending(c, ns, podDescr.Name),
		fmt.Sprintf("starting pod %s in namespace %s", podDescr.Name, ns))
	By(fmt.Sprintf("Started pod %s in namespace %s", podDescr.Name, ns))

	// Check the pod's current state and verify that restartCount is present.
	By("checking the pod's current state and verifying that restartCount is present")
	pod, err := c.Pods(ns).Get(podDescr.Name)
	expectNoError(err, fmt.Sprintf("getting pod %s in namespace %s", podDescr.Name, ns))
	initialRestartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
	By(fmt.Sprintf("Initial restart count of pod %s is %d", podDescr.Name, initialRestartCount))

	// Wait for the restart state to be as desired.
	deadline := time.Now().Add(2 * time.Minute)
	lastRestartCount := initialRestartCount
	observedRestarts := 0
	for start := time.Now(); time.Now().Before(deadline); time.Sleep(2 * time.Second) {
		pod, err = c.Pods(ns).Get(podDescr.Name)
		expectNoError(err, fmt.Sprintf("getting pod %s", podDescr.Name))
		restartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
		if restartCount != lastRestartCount {
			By(fmt.Sprintf("Restart count of pod %s/%s is now %d (%v elapsed)",
				ns, podDescr.Name, restartCount, time.Since(start)))
			if restartCount < lastRestartCount {
				Failf("Restart count should increment monotonically: restart cont of pod %s/%s changed from %d to %d",
					ns, podDescr.Name, lastRestartCount, restartCount)
			}
		}
		observedRestarts = restartCount - initialRestartCount
		if expectNumRestarts > 0 && observedRestarts >= expectNumRestarts {
			// Stop if we have observed more than expectNumRestarts restarts.
			break
		}
		lastRestartCount = restartCount
	}

	// If we expected 0 restarts, fail if observed any restart.
	// If we expected n restarts (n > 0), fail if we observed < n restarts.
	if (expectNumRestarts == 0 && observedRestarts > 0) || (expectNumRestarts > 0 &&
		observedRestarts < expectNumRestarts) {
		Failf("pod %s/%s - expected number of restarts: %t, found restarts: %t",
			ns, podDescr.Name, expectNumRestarts, observedRestarts)
	}
}

func runLivenessTest(c *client.Client, ns string, podDescr *api.Pod, expectRestart bool) {
	By(fmt.Sprintf("Creating pod %s in namespace %s", podDescr.Name, ns))
	_, err := c.Pods(ns).Create(podDescr)
	expectNoError(err, fmt.Sprintf("creating pod %s", podDescr.Name))

	// At the end of the test, clean up by removing the pod.
	defer func() {
		By("deleting the pod")
		c.Pods(ns).Delete(podDescr.Name, api.NewDeleteOptions(0))
	}()

	// Wait until the pod is not pending. (Here we need to check for something other than
	// 'Pending' other than checking for 'Running', since when failures occur, we go to
	// 'Terminated' which can cause indefinite blocking.)
	expectNoError(waitForPodNotPending(c, ns, podDescr.Name),
		fmt.Sprintf("starting pod %s in namespace %s", podDescr.Name, ns))
	By(fmt.Sprintf("Started pod %s in namespace %s", podDescr.Name, ns))

	// Check the pod's current state and verify that restartCount is present.
	By("checking the pod's current state and verifying that restartCount is present")
	pod, err := c.Pods(ns).Get(podDescr.Name)
	expectNoError(err, fmt.Sprintf("getting pod %s in namespace %s", podDescr.Name, ns))
	initialRestartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
	By(fmt.Sprintf("Initial restart count of pod %s is %d", podDescr.Name, initialRestartCount))

	// Wait for the restart state to be as desired.
	restarts, deadline := false, time.Now().Add(2*time.Minute)
	for start := time.Now(); time.Now().Before(deadline); time.Sleep(2 * time.Second) {
		pod, err = c.Pods(ns).Get(podDescr.Name)
		expectNoError(err, fmt.Sprintf("getting pod %s", podDescr.Name))
		restartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
		By(fmt.Sprintf("Restart count of pod %s/%s is now %d (%v elapsed)",
			ns, podDescr.Name, restartCount, time.Since(start)))
		if restartCount > initialRestartCount {
			By(fmt.Sprintf("Restart count of pod %s/%s changed from %d to %d",
				ns, podDescr.Name, initialRestartCount, restartCount))
			restarts = true
			break
		}
	}

	if restarts != expectRestart {
		Failf("pod %s/%s - expected restarts: %t, found restarts: %t",
			ns, podDescr.Name, expectRestart, restarts)
	}
}

				return filepath.Join(testContext.RepoRoot, "docs", "user-guide", "liveness", file)
			}
			execYaml := mkpath("exec-liveness.yaml")
			httpYaml := mkpath("http-liveness.yaml")
			nsFlag := fmt.Sprintf("--namespace=%v", ns)

			runKubectlOrDie("create", "-f", execYaml, nsFlag)
			runKubectlOrDie("create", "-f", httpYaml, nsFlag)
			checkRestart := func(podName string, timeout time.Duration) {
				err := waitForPodRunningInNamespace(c, podName, ns)
				Expect(err).NotTo(HaveOccurred())

				for t := time.Now(); time.Since(t) < timeout; time.Sleep(poll) {
					pod, err := c.Pods(ns).Get(podName)
					expectNoError(err, fmt.Sprintf("getting pod %s", podName))
					restartCount := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, "liveness").RestartCount
					Logf("Pod: %s   restart count:%d", podName, restartCount)
					if restartCount > 0 {
						return
					}
				}
				Failf("Pod %s was not restarted", podName)
			}
			By("Check restarts")
			checkRestart("liveness-exec", time.Minute)
			checkRestart("liveness-http", time.Minute)
		})
	})

	Describe("[Skipped][Example]Secret", func() {
		It("should create a pod that reads a secret", func() {

			httpYaml := mkpath("http-liveness.yaml")
			nsFlag := fmt.Sprintf("--namespace=%v", ns)

			framework.RunKubectlOrDie("create", "-f", filepath.Join(framework.TestContext.OutputDir, execYaml), nsFlag)
			framework.RunKubectlOrDie("create", "-f", filepath.Join(framework.TestContext.OutputDir, httpYaml), nsFlag)

			// Since both containers start rapidly, we can easily run this test in parallel.
			var wg sync.WaitGroup
			passed := true
			checkRestart := func(podName string, timeout time.Duration) {
				err := framework.WaitForPodNameRunningInNamespace(c, podName, ns)
				Expect(err).NotTo(HaveOccurred())
				for t := time.Now(); time.Since(t) < timeout; time.Sleep(framework.Poll) {
					pod, err := c.Pods(ns).Get(podName)
					framework.ExpectNoError(err, fmt.Sprintf("getting pod %s", podName))
					stat := api.GetExistingContainerStatus(pod.Status.ContainerStatuses, podName)
					framework.Logf("Pod: %s, restart count:%d", stat.Name, stat.RestartCount)
					if stat.RestartCount > 0 {
						framework.Logf("Saw %v restart, succeeded...", podName)
						wg.Done()
						return
					}
				}
				framework.Logf("Failed waiting for %v restart! ", podName)
				passed = false
				wg.Done()
			}

			By("Check restarts")

			// Start the "actual test", and wait for both pods to complete.