Golang api.PodStatus类代码示例

func (m *manager) SetPodStatus(pod *api.Pod, status api.PodStatus) {
	m.podStatusesLock.Lock()
	defer m.podStatusesLock.Unlock()

	var oldStatus api.PodStatus
	if cachedStatus, ok := m.podStatuses[pod.UID]; ok {
		oldStatus = cachedStatus.status
	} else if mirrorPod, ok := m.podManager.GetMirrorPodByPod(pod); ok {
		oldStatus = mirrorPod.Status
	} else {
		oldStatus = pod.Status
	}

	// Set ReadyCondition.LastTransitionTime.
	if readyCondition := api.GetPodReadyCondition(status); readyCondition != nil {
		// Need to set LastTransitionTime.
		lastTransitionTime := unversioned.Now()
		oldReadyCondition := api.GetPodReadyCondition(oldStatus)
		if oldReadyCondition != nil && readyCondition.Status == oldReadyCondition.Status {
			lastTransitionTime = oldReadyCondition.LastTransitionTime
		}
		readyCondition.LastTransitionTime = lastTransitionTime
	}

	// ensure that the start time does not change across updates.
	if oldStatus.StartTime != nil && !oldStatus.StartTime.IsZero() {
		status.StartTime = oldStatus.StartTime
	} else if status.StartTime.IsZero() {
		// if the status has no start time, we need to set an initial time
		now := unversioned.Now()
		status.StartTime = &now
	}

	m.updateStatusInternal(pod, status)
}

// updateStatusInternal updates the internal status cache, and queues an update to the api server if
// necessary. Returns whether an update was triggered.
// This method IS NOT THREAD SAFE and must be called from a locked function.
func (m *manager) updateStatusInternal(pod *api.Pod, status api.PodStatus, forceUpdate bool) bool {
	var oldStatus api.PodStatus
	cachedStatus, isCached := m.podStatuses[pod.UID]
	if isCached {
		oldStatus = cachedStatus.status
	} else if mirrorPod, ok := m.podManager.GetMirrorPodByPod(pod); ok {
		oldStatus = mirrorPod.Status
	} else {
		oldStatus = pod.Status
	}

	// Set ReadyCondition.LastTransitionTime.
	if readyCondition := api.GetPodReadyCondition(status); readyCondition != nil {
		// Need to set LastTransitionTime.
		lastTransitionTime := unversioned.Now()
		oldReadyCondition := api.GetPodReadyCondition(oldStatus)
		if oldReadyCondition != nil && readyCondition.Status == oldReadyCondition.Status {
			lastTransitionTime = oldReadyCondition.LastTransitionTime
		}
		readyCondition.LastTransitionTime = lastTransitionTime
	}

	// ensure that the start time does not change across updates.
	if oldStatus.StartTime != nil && !oldStatus.StartTime.IsZero() {
		status.StartTime = oldStatus.StartTime
	} else if status.StartTime.IsZero() {
		// if the status has no start time, we need to set an initial time
		now := unversioned.Now()
		status.StartTime = &now
	}

	normalizeStatus(&status)
	// The intent here is to prevent concurrent updates to a pod's status from
	// clobbering each other so the phase of a pod progresses monotonically.
	if isCached && isStatusEqual(&cachedStatus.status, &status) && !forceUpdate {
		glog.V(3).Infof("Ignoring same status for pod %q, status: %+v", format.Pod(pod), status)
		return false // No new status.
	}

	newStatus := versionedPodStatus{
		status:       status,
		version:      cachedStatus.version + 1,
		podName:      pod.Name,
		podNamespace: pod.Namespace,
	}
	m.podStatuses[pod.UID] = newStatus

	select {
	case m.podStatusChannel <- podStatusSyncRequest{pod.UID, newStatus}:
		return true
	default:
		// Let the periodic syncBatch handle the update if the channel is full.
		// We can't block, since we hold the mutex lock.
		glog.V(4).Infof("Skpping the status update for pod %q for now because the channel is full; status: %+v",
			format.Pod(pod), status)
		return false
	}
}

// toPodStatus converts a podInfo type into an api.PodStatus type.
func (p *podInfo) toPodStatus(pod *kubecontainer.Pod) api.PodStatus {
	var status api.PodStatus
	status.PodIP = p.ip
	// For now just make every container's state the same as the pod.
	for _, container := range pod.Containers {
		status.ContainerStatuses = append(status.ContainerStatuses, p.getContainerStatus(container))
	}
	return status
}

func (m *manager) SetPodStatus(pod *api.Pod, status api.PodStatus) {
	m.podStatusesLock.Lock()
	defer m.podStatusesLock.Unlock()
	oldStatus, found := m.podStatuses[pod.UID]

	// ensure that the start time does not change across updates.
	if found && oldStatus.StartTime != nil {
		status.StartTime = oldStatus.StartTime
	}

	// Set ReadyCondition.LastTransitionTime.
	// Note we cannot do this while generating the status since we do not have oldStatus
	// at that time for mirror pods.
	if readyCondition := api.GetPodReadyCondition(status); readyCondition != nil {
		// Need to set LastTransitionTime.
		lastTransitionTime := unversioned.Now()
		if found {
			oldReadyCondition := api.GetPodReadyCondition(oldStatus)
			if oldReadyCondition != nil && readyCondition.Status == oldReadyCondition.Status {
				lastTransitionTime = oldReadyCondition.LastTransitionTime
			}
		}
		readyCondition.LastTransitionTime = lastTransitionTime
	}

	// if the status has no start time, we need to set an initial time
	// TODO(yujuhong): Consider setting StartTime when generating the pod
	// status instead, which would allow manager to become a simple cache
	// again.
	if status.StartTime.IsZero() {
		if pod.Status.StartTime.IsZero() {
			// the pod did not have a previously recorded value so set to now
			now := unversioned.Now()
			status.StartTime = &now
		} else {
			// the pod had a recorded value, but the kubelet restarted so we need to rebuild cache
			// based on last observed value
			status.StartTime = pod.Status.StartTime
		}
	}

	// TODO: Holding a lock during blocking operations is dangerous. Refactor so this isn't necessary.
	// The intent here is to prevent concurrent updates to a pod's status from
	// clobbering each other so the phase of a pod progresses monotonically.
	// Currently this routine is not called for the same pod from multiple
	// workers and/or the kubelet but dropping the lock before sending the
	// status down the channel feels like an easy way to get a bullet in foot.
	if !found || !isStatusEqual(&oldStatus, &status) || pod.DeletionTimestamp != nil {
		m.podStatuses[pod.UID] = status
		m.podStatusChannel <- podStatusSyncRequest{pod, status}
	} else {
		glog.V(3).Infof("Ignoring same status for pod %q, status: %+v", kubeletUtil.FormatPodName(pod), status)
	}
}

// makePodStatus constructs the pod status from the pod info and rkt info.
func makePodStatus(pod *kubecontainer.Pod, podInfo *podInfo, rktInfo *rktInfo) api.PodStatus {
	var status api.PodStatus
	status.PodIP = podInfo.ip
	// For now just make every container's state the same as the pod.
	for _, container := range pod.Containers {
		containerStatus := makeContainerStatus(container, podInfo)
		containerStatus.RestartCount = rktInfo.restartCount
		status.ContainerStatuses = append(status.ContainerStatuses, containerStatus)
	}
	return status
}

func (m *manager) SetPodStatus(pod *api.Pod, status api.PodStatus) {
	m.podStatusesLock.Lock()
	defer m.podStatusesLock.Unlock()
	oldStatus, found := m.podStatuses[pod.UID]

	// ensure that the start time does not change across updates.
	if found && oldStatus.status.StartTime != nil {
		status.StartTime = oldStatus.status.StartTime
	}

	// Set ReadyCondition.LastTransitionTime.
	// Note we cannot do this while generating the status since we do not have oldStatus
	// at that time for mirror pods.
	if readyCondition := api.GetPodReadyCondition(status); readyCondition != nil {
		// Need to set LastTransitionTime.
		lastTransitionTime := unversioned.Now()
		if found {
			oldReadyCondition := api.GetPodReadyCondition(oldStatus.status)
			if oldReadyCondition != nil && readyCondition.Status == oldReadyCondition.Status {
				lastTransitionTime = oldReadyCondition.LastTransitionTime
			}
		}
		readyCondition.LastTransitionTime = lastTransitionTime
	}

	// if the status has no start time, we need to set an initial time
	// TODO(yujuhong): Consider setting StartTime when generating the pod
	// status instead, which would allow manager to become a simple cache
	// again.
	if status.StartTime.IsZero() {
		if pod.Status.StartTime.IsZero() {
			// the pod did not have a previously recorded value so set to now
			now := unversioned.Now()
			status.StartTime = &now
		} else {
			// the pod had a recorded value, but the kubelet restarted so we need to rebuild cache
			// based on last observed value
			status.StartTime = pod.Status.StartTime
		}
	}

	newStatus := m.updateStatusInternal(pod, status)
	if newStatus != nil {
		select {
		case m.podStatusChannel <- podStatusSyncRequest{pod.UID, *newStatus}:
		default:
			// Let the periodic syncBatch handle the update if the channel is full.
			// We can't block, since we hold the mutex lock.
		}
	}
}

func TestStaleUpdates(t *testing.T) {
	pod := getTestPod()
	client := fake.NewSimpleClientset(pod)
	m := newTestManager(client)

	status := api.PodStatus{Message: "initial status"}
	m.SetPodStatus(pod, status)
	status.Message = "first version bump"
	m.SetPodStatus(pod, status)
	status.Message = "second version bump"
	m.SetPodStatus(pod, status)
	verifyUpdates(t, m, 3)

	t.Logf("First sync pushes latest status.")
	m.testSyncBatch()
	verifyActions(t, m.kubeClient, []core.Action{
		core.GetActionImpl{ActionImpl: core.ActionImpl{Verb: "get", Resource: "pods"}},
		core.UpdateActionImpl{ActionImpl: core.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
	})
	client.ClearActions()

	for i := 0; i < 2; i++ {
		t.Logf("Next 2 syncs should be ignored (%d).", i)
		m.testSyncBatch()
		verifyActions(t, m.kubeClient, []core.Action{})
	}

	t.Log("Unchanged status should not send an update.")
	m.SetPodStatus(pod, status)
	verifyUpdates(t, m, 0)

	t.Log("... unless it's stale.")
	m.apiStatusVersions[pod.UID] = m.apiStatusVersions[pod.UID] - 1

	m.SetPodStatus(pod, status)
	m.testSyncBatch()
	verifyActions(t, m.kubeClient, []core.Action{
		core.GetActionImpl{ActionImpl: core.ActionImpl{Verb: "get", Resource: "pods"}},
		core.UpdateActionImpl{ActionImpl: core.ActionImpl{Verb: "update", Resource: "pods", Subresource: "status"}},
	})

	// Nothing stuck in the pipe.
	verifyUpdates(t, m, 0)
}

func (m *manager) SetPodStatus(pod *api.Pod, status api.PodStatus) {
	m.podStatusesLock.Lock()
	defer m.podStatusesLock.Unlock()

	var oldStatus api.PodStatus
	if cachedStatus, ok := m.podStatuses[pod.UID]; ok {
		oldStatus = cachedStatus.status
	} else if mirrorPod, ok := m.podManager.GetMirrorPodByPod(pod); ok {
		oldStatus = mirrorPod.Status
	} else {
		oldStatus = pod.Status
	}

	// Set ReadyCondition.LastTransitionTime.
	if readyCondition := api.GetPodReadyCondition(status); readyCondition != nil {
		// Need to set LastTransitionTime.
		lastTransitionTime := unversioned.Now()
		oldReadyCondition := api.GetPodReadyCondition(oldStatus)
		if oldReadyCondition != nil && readyCondition.Status == oldReadyCondition.Status {
			lastTransitionTime = oldReadyCondition.LastTransitionTime
		}
		readyCondition.LastTransitionTime = lastTransitionTime
	}

	// ensure that the start time does not change across updates.
	if oldStatus.StartTime != nil && !oldStatus.StartTime.IsZero() {
		status.StartTime = oldStatus.StartTime
	} else if status.StartTime.IsZero() {
		// if the status has no start time, we need to set an initial time
		now := unversioned.Now()
		status.StartTime = &now
	}

	newStatus := m.updateStatusInternal(pod, status)
	if newStatus != nil {
		select {
		case m.podStatusChannel <- podStatusSyncRequest{pod.UID, *newStatus}:
		default:
			// Let the periodic syncBatch handle the update if the channel is full.
			// We can't block, since we hold the mutex lock.
		}
	}
}

// convertStatusToAPIStatus creates an api PodStatus for the given pod from
// the given internal pod status.  It is purely transformative and does not
// alter the kubelet state at all.
func (kl *Kubelet) convertStatusToAPIStatus(pod *api.Pod, podStatus *kubecontainer.PodStatus) *api.PodStatus {
	var apiPodStatus api.PodStatus
	apiPodStatus.PodIP = podStatus.IP

	apiPodStatus.ContainerStatuses = kl.convertToAPIContainerStatuses(
		pod, podStatus,
		pod.Status.ContainerStatuses,
		pod.Spec.Containers,
		len(pod.Spec.InitContainers) > 0,
		false,
	)
	apiPodStatus.InitContainerStatuses = kl.convertToAPIContainerStatuses(
		pod, podStatus,
		pod.Status.InitContainerStatuses,
		pod.Spec.InitContainers,
		len(pod.Spec.InitContainers) > 0,
		true,
	)

	return &apiPodStatus
}

// GetPodStatus retrieves the status of the pod, including the information of
// all containers in the pod. Clients of this interface assume the containers
// statuses in a pod always have a deterministic ordering (eg: sorted by name).
func (r *runtime) GetPodStatus(pod *api.Pod) (*api.PodStatus, error) {
	podInfos, err := r.hyperClient.ListPods()
	if err != nil {
		glog.Errorf("Hyper: ListPods failed, error: %s", err)
		return nil, err
	}

	var status api.PodStatus
	podFullName := r.buildHyperPodFullName(string(pod.UID), string(pod.Name), string(pod.Namespace))
	for _, podInfo := range podInfos {
		if podInfo.PodName != podFullName {
			continue
		}

		if len(podInfo.PodInfo.Status.PodIP) > 0 {
			status.PodIP = podInfo.PodInfo.Status.PodIP[0]
		}

		status.HostIP = podInfo.PodInfo.Status.HostIP
		status.Phase = api.PodPhase(podInfo.PodInfo.Status.Phase)
		status.Message = podInfo.PodInfo.Status.Message
		status.Reason = podInfo.PodInfo.Status.Reason
		for _, containerInfo := range podInfo.PodInfo.Status.Status {
			for _, container := range podInfo.PodInfo.Spec.Containers {
				if container.ContainerID == containerInfo.ContainerID {
					status.ContainerStatuses = append(
						status.ContainerStatuses,
						r.getContainerStatus(containerInfo, container.Image, container.ImageID))
				}
			}
		}
	}

	glog.V(5).Infof("Hyper: get pod %s status %s", podFullName, status)

	return &status, nil
}