// removeOldestNSandboxes removes the oldest inactive toRemove sandboxes and
// returns the resulting slice.
func (cgc *containerGC) removeOldestNSandboxes(ctx context.Context, sandboxes []sandboxGCInfo, toRemove int) {
	numToKeep := len(sandboxes) - toRemove
	if numToKeep > 0 {
		sort.Sort(sandboxByCreated(sandboxes))
	}
	// Remove from oldest to newest (last to first).
	for i := len(sandboxes) - 1; i >= numToKeep; i-- {
		if !sandboxes[i].active {

	// 3. should create all app containers because init container finished.
	// Stop init container instance 0.
	sandboxIDs, err := m.getSandboxIDByPodUID(ctx, pod.UID, nil)
	require.NoError(t, err)
	sandboxID := sandboxIDs[0]
	initID0, err := fakeRuntime.GetContainerID(sandboxID, initContainers[0].Name, 0)
	require.NoError(t, err)
	fakeRuntime.StopContainer(ctx, initID0, 0)

			containers = append(containers, c)
		}
	}

	for _, p := range pods {
		if p == nil {
			continue
		}
		fillCidSet(p.Containers)
		// Update sandboxes as containers
		// TODO: keep track of sandboxes explicitly.
		fillCidSet(p.Sandboxes)
	}
	return containers
}

func computeEvents(oldPod, newPod *kubecontainer.Pod, cid *kubecontainer.ContainerID) []*PodLifecycleEvent {
	var pid types.UID

			State:               containerStatus.State,
		}
		runningPod.Containers = append(runningPod.Containers, container)
	}

	// Populate sandboxes in kubecontainer.Pod
	for _, sandbox := range podStatus.SandboxStatuses {
		runningPod.Sandboxes = append(runningPod.Sandboxes, &Container{
			ID:    ContainerID{Type: runtimeName, ID: sandbox.Id},
			State: SandboxToContainerState(sandbox.State),
		})
	}
	return runningPod

	Containers []*Container
	// List of sandboxes associated with this pod. The sandboxes are converted
	// to Container temporarily to avoid substantial changes to other
	// components. This is only populated by kuberuntime.
	// TODO: use the runtimeApi.PodSandbox type directly.
	Sandboxes []*Container
}

// PodPair contains both runtime#Pod and api#Pod
type PodPair struct {

}

// killPod instructs the container runtime to kill the pod. This method requires that
// the pod status contains the result of the last syncPod, otherwise it may fail to
// terminate newly created containers and sandboxes.
func (kl *Kubelet) killPod(ctx context.Context, pod *v1.Pod, p kubecontainer.Pod, gracePeriodOverride *int64) error {
	// Call the container runtime KillPod method which stops all known running containers of the pod

func (kl *Kubelet) ListMetricDescriptors(ctx context.Context) ([]*runtimeapi.MetricDescriptor, error) {
	return kl.containerRuntime.ListMetricDescriptors(ctx)
}

// ListPodSandboxMetrics retrieves the metrics for all pod sandboxes.
func (kl *Kubelet) ListPodSandboxMetrics(ctx context.Context) ([]*runtimeapi.PodSandboxMetrics, error) {
	return kl.containerRuntime.ListPodSandboxMetrics(ctx)
}