Golang record.Eventf函数代码示例

// createNetworkContainer starts the network container for a pod. Returns the docker container ID of the newly created container.
func (kl *Kubelet) createNetworkContainer(pod *api.BoundPod) (dockertools.DockerID, error) {
	var ports []api.Port
	// Docker only exports ports from the network container.  Let's
	// collect all of the relevant ports and export them.
	for _, container := range pod.Spec.Containers {
		ports = append(ports, container.Ports...)
	}
	container := &api.Container{
		Name:  networkContainerName,
		Image: kl.networkContainerImage,
		Ports: ports,
	}
	ref, err := containerRef(pod, container)
	if err != nil {
		glog.Errorf("Couldn't make a ref to pod %v, container %v: '%v'", pod.Name, container.Name, err)
	}
	// TODO: make this a TTL based pull (if image older than X policy, pull)
	ok, err := kl.dockerPuller.IsImagePresent(container.Image)
	if err != nil {
		if ref != nil {
			record.Eventf(ref, "failed", "failed", "Failed to inspect image %q", container.Image)
		}
		return "", err
	}
	if !ok {
		if err := kl.pullImage(container.Image, ref); err != nil {
			return "", err
		}
	}
	if ref != nil {
		record.Eventf(ref, "waiting", "pulled", "Successfully pulled image %q", container.Image)
	}
	return kl.runContainer(pod, container, nil, "")
}

func (kl *Kubelet) pullImage(img string, ref *api.ObjectReference) error {
	kl.pullLock.RLock()
	defer kl.pullLock.RUnlock()
	if err := kl.dockerPuller.Pull(img); err != nil {
		if ref != nil {
			record.Eventf(ref, "failed", "failed", "Failed to pull image %q", img)
		}
		return err
	}
	if ref != nil {
		record.Eventf(ref, "waiting", "pulled", "Successfully pulled image %q", img)
	}
	return nil
}

func filterInvalidPods(pods []api.BoundPod, source string) (filtered []*api.BoundPod) {
	names := util.StringSet{}
	for i := range pods {
		pod := &pods[i]
		var errlist []error
		if errs := validation.ValidateBoundPod(pod); len(errs) != 0 {
			errlist = append(errlist, errs...)
			// If validation fails, don't trust it any further -
			// even Name could be bad.
		} else {
			name := podUniqueName(pod)
			if names.Has(name) {
				errlist = append(errlist, apierrs.NewFieldDuplicate("name", pod.Name))
			} else {
				names.Insert(name)
			}
		}
		if len(errlist) > 0 {
			name := bestPodIdentString(pod)
			err := utilerrors.NewAggregate(errlist)
			glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, name, source, err)
			record.Eventf(pod, "failedValidation", "Error validating pod %s from %s, ignoring: %v", name, source, err)
			continue
		}
		filtered = append(filtered, pod)
	}
	return
}

// BirthCry sends an event that the kubelet has started up.
func (kl *Kubelet) BirthCry() {
	// Make an event that kubelet restarted.
	// TODO: get the real minion object of ourself,
	// and use the real minion name and UID.
	ref := &api.ObjectReference{
		Kind: "Minion",
		Name: kl.hostname,
		UID:  kl.hostname,
	}
	record.Eventf(ref, "", "starting", "Starting kubelet.")
}

func (s *Scheduler) scheduleOne() {
	pod := s.config.NextPod()
	glog.V(3).Infof("Attempting to schedule: %v", pod)
	dest, err := s.config.Algorithm.Schedule(*pod, s.config.MinionLister)
	if err != nil {
		glog.Warningf("Failed to schedule pod (times:%d): %v, err:%v", pod.Status.SchedulerFailureCount, pod, err)
		if pod.Status.SchedulerFailureCount < s.config.MaxRetryTimes {
			s.config.Error(pod, err)
		} else {
			record.Eventf(pod, string(api.PodPending), "failedScheduling", "Error scheduling: %v", err)
			pod.Status.Phase = api.PodFailed
			if err := s.config.Status.UpdatePodStatus(pod); err != nil {
				glog.Warningf("Failed to update pod (%s): %v", pod.Name, err)
			}
		}
		pod.Status.SchedulerFailureCount++
		return
	}
	b := &api.Binding{
		ObjectMeta: api.ObjectMeta{Namespace: pod.Namespace, Annotations: pod.Annotations},
		PodID:      pod.Name,
		Host:       dest.Name,
		Network:    dest.Network,
		CpuSet:     dest.CpuSet,
	}
	if err := s.config.Binder.Bind(b); err != nil {
		glog.Warningf("Failed to bind pod: %v", err)
		record.Eventf(pod, string(api.PodPending), "failedScheduling", "Binding rejected: %v", err)
		s.config.Error(pod, err)
		return
	}
	// check pod has scheduled
	for {
		ok, _ := s.config.Algorithm.CheckScheduledPod(pod.Name)
		if ok {
			break
		}
		time.Sleep(10 * time.Millisecond)
	}
	record.Eventf(pod, string(api.PodPending), "scheduled", "Successfully assigned %v to %#v", pod.Name, dest)
}

func (s *Scheduler) scheduleOne() {
	pod := s.config.NextPod()
	glog.V(3).Infof("Attempting to schedule: %v", pod)
	dest, err := s.config.Algorithm.Schedule(*pod, s.config.MinionLister)
	if err != nil {
		glog.V(1).Infof("Failed to schedule: %v", pod)
		record.Eventf(pod, string(api.PodPending), "failedScheduling", "Error scheduling: %v", err)
		s.config.Error(pod, err)
		return
	}
	b := &api.Binding{
		ObjectMeta: api.ObjectMeta{Namespace: pod.Namespace},
		PodID:      pod.Name,
		Host:       dest,
	}
	if err := s.config.Binder.Bind(b); err != nil {
		glog.V(1).Infof("Failed to bind pod: %v", err)
		record.Eventf(pod, string(api.PodPending), "failedScheduling", "Binding rejected: %v", err)
		s.config.Error(pod, err)
		return
	}
	record.Eventf(pod, string(api.PodPending), "scheduled", "Successfully assigned %v to %v", pod.Name, dest)
}

func (kl *Kubelet) killContainerByID(ID, name string) error {
	glog.V(2).Infof("Killing container with id %q and name %q", ID, name)
	err := kl.dockerClient.StopContainer(ID, 10)
	if len(name) == 0 {
		return err
	}

	ref, ok := kl.getRef(dockertools.DockerID(ID))
	if !ok {
		glog.Warningf("No ref for pod '%v' - '%v'", ID, name)
	} else {
		// TODO: pass reason down here, and state, or move this call up the stack.
		record.Eventf(ref, "terminated", "killing", "Killing %v - %v", ID, name)
	}

	return err
}

//.........这里部分代码省略.........
					containersToKeep[containerID] = empty{}
					continue
				}
				if healthy == health.Healthy {
					containersToKeep[containerID] = empty{}
					continue
				}
				glog.V(1).Infof("pod %q container %q is unhealthy. Container will be killed and re-created.", podFullName, container.Name, healthy)
			} else {
				glog.V(1).Infof("pod %q container %q hash changed (%d vs %d). Container will be killed and re-created.", podFullName, container.Name, hash, expectedHash)
			}
			if err := kl.killContainer(dockerContainer); err != nil {
				glog.V(1).Infof("Failed to kill container %q: %v", dockerContainer.ID, err)
				continue
			}
			killedContainers[containerID] = empty{}

			// Also kill associated network container
			if netContainer, found, _ := dockerContainers.FindPodContainer(podFullName, uuid, networkContainerName); found {
				if err := kl.killContainer(netContainer); err != nil {
					glog.V(1).Infof("Failed to kill network container %q: %v", netContainer.ID, err)
					continue
				}
			}
		}

		// Check RestartPolicy for container
		recentContainers, err := dockertools.GetRecentDockerContainersWithNameAndUUID(kl.dockerClient, podFullName, uuid, container.Name)
		if err != nil {
			glog.Errorf("Error listing recent containers with name and uuid:%s--%s--%s", podFullName, uuid, container.Name)
			// TODO(dawnchen): error handling here?
		}

		if len(recentContainers) > 0 && pod.Spec.RestartPolicy.Always == nil {
			if pod.Spec.RestartPolicy.Never != nil {
				glog.V(3).Infof("Already ran container with name %s--%s--%s, do nothing",
					podFullName, uuid, container.Name)
				continue
			}
			if pod.Spec.RestartPolicy.OnFailure != nil {
				// Check the exit code of last run
				if recentContainers[0].State.ExitCode == 0 {
					glog.V(3).Infof("Already successfully ran container with name %s--%s--%s, do nothing",
						podFullName, uuid, container.Name)
					continue
				}
			}
		}

		glog.V(3).Infof("Container with name %s--%s--%s doesn't exist, creating %#v", podFullName, uuid, container.Name, container)
		ref, err := containerRef(pod, &container)
		if err != nil {
			glog.Errorf("Couldn't make a ref to pod %v, container %v: '%v'", pod.Name, container.Name, err)
		}
		if !api.IsPullNever(container.ImagePullPolicy) {
			present, err := kl.dockerPuller.IsImagePresent(container.Image)
			latest := dockertools.RequireLatestImage(container.Image)
			if err != nil {
				if ref != nil {
					record.Eventf(ref, "failed", "failed", "Failed to inspect image %q", container.Image)
				}
				glog.Errorf("Failed to inspect image %q: %v; skipping pod %q container %q", container.Image, err, podFullName, container.Name)
				continue
			}
			if api.IsPullAlways(container.ImagePullPolicy) ||
				(api.IsPullIfNotPresent(container.ImagePullPolicy) && (!present || latest)) {
				if err := kl.pullImage(container.Image, ref); err != nil {
					continue
				}
			}
		}
		// TODO(dawnchen): Check RestartPolicy.DelaySeconds before restart a container
		containerID, err := kl.runContainer(pod, &container, podVolumes, "container:"+string(netID))
		if err != nil {
			// TODO(bburns) : Perhaps blacklist a container after N failures?
			glog.Errorf("Error running pod %q container %q: %v", podFullName, container.Name, err)
			continue
		}
		containersToKeep[containerID] = empty{}
	}

	// Kill any containers in this pod which were not identified above (guards against duplicates).
	for id, container := range dockerContainers {
		curPodFullName, curUUID, _, _ := dockertools.ParseDockerName(container.Names[0])
		if curPodFullName == podFullName && curUUID == uuid {
			// Don't kill containers we want to keep or those we already killed.
			_, keep := containersToKeep[id]
			_, killed := killedContainers[id]
			if !keep && !killed {
				glog.V(1).Infof("Killing unwanted container in pod %q: %+v", curUUID, container)
				err = kl.killContainer(container)
				if err != nil {
					glog.Errorf("Error killing container: %v", err)
				}
			}
		}
	}

	return nil
}

// Run a single container from a pod. Returns the docker container ID
func (kl *Kubelet) runContainer(pod *api.BoundPod, container *api.Container, podVolumes volumeMap, netMode string) (id dockertools.DockerID, err error) {
	ref, err := containerRef(pod, container)
	if err != nil {
		glog.Errorf("Couldn't make a ref to pod %v, container %v: '%v'", pod.Name, container.Name, err)
	}

	envVariables := makeEnvironmentVariables(container)
	binds := makeBinds(pod, container, podVolumes)
	exposedPorts, portBindings := makePortsAndBindings(container)

	opts := docker.CreateContainerOptions{
		Name: dockertools.BuildDockerName(pod.UID, GetPodFullName(pod), container),
		Config: &docker.Config{
			Cmd:          container.Command,
			Env:          envVariables,
			ExposedPorts: exposedPorts,
			Hostname:     pod.Name,
			Image:        container.Image,
			Memory:       container.Memory.Value(),
			CPUShares:    milliCPUToShares(container.CPU.MilliValue()),
			WorkingDir:   container.WorkingDir,
		},
	}
	dockerContainer, err := kl.dockerClient.CreateContainer(opts)
	if err != nil {
		if ref != nil {
			record.Eventf(ref, "failed", "failed",
				"Failed to create docker container with error: %v", err)
		}
		return "", err
	}
	// Remember this reference so we can report events about this container
	if ref != nil {
		kl.setRef(dockertools.DockerID(dockerContainer.ID), ref)
		record.Eventf(ref, "waiting", "created", "Created with docker id %v", dockerContainer.ID)
	}

	if len(container.TerminationMessagePath) != 0 {
		p := kl.GetPodContainerDir(pod.UID, container.Name)
		if err := os.MkdirAll(p, 0750); err != nil {
			glog.Errorf("Error on creating %q: %v", p, err)
		} else {
			containerLogPath := path.Join(p, dockerContainer.ID)
			fs, err := os.Create(containerLogPath)
			if err != nil {
				glog.Errorf("Error on creating termination-log file %q: %v", containerLogPath, err)
			}
			defer fs.Close()
			b := fmt.Sprintf("%s:%s", containerLogPath, container.TerminationMessagePath)
			binds = append(binds, b)
		}
	}
	privileged := false
	if capabilities.Get().AllowPrivileged {
		privileged = container.Privileged
	} else if container.Privileged {
		return "", fmt.Errorf("container requested privileged mode, but it is disallowed globally.")
	}
	hc := &docker.HostConfig{
		PortBindings: portBindings,
		Binds:        binds,
		NetworkMode:  netMode,
		Privileged:   privileged,
	}
	if pod.Spec.DNSPolicy == api.DNSClusterFirst {
		if err := kl.applyClusterDNS(hc, pod); err != nil {
			return "", err
		}
	}
	err = kl.dockerClient.StartContainer(dockerContainer.ID, hc)
	if err != nil {
		if ref != nil {
			record.Eventf(ref, "failed", "failed",
				"Failed to start with docker id %v with error: %v", dockerContainer.ID, err)
		}
		return "", err
	}
	if ref != nil {
		record.Eventf(ref, "running", "started", "Started with docker id %v", dockerContainer.ID)
	}

	if container.Lifecycle != nil && container.Lifecycle.PostStart != nil {
		handlerErr := kl.runHandler(GetPodFullName(pod), pod.UID, container, container.Lifecycle.PostStart)
		if handlerErr != nil {
			kl.killContainerByID(dockerContainer.ID, "")
			return dockertools.DockerID(""), fmt.Errorf("failed to call event handler: %v", handlerErr)
		}
	}
	return dockertools.DockerID(dockerContainer.ID), err
}

// SyncPods synchronizes the configured list of pods (desired state) with the host current state.
func (kl *Kubelet) SyncPods(pods []api.BoundPod) error {
	glog.V(4).Infof("Desired: %#v", pods)
	var err error
	desiredContainers := make(map[podContainer]empty)
	desiredPods := make(map[string]empty)

	dockerContainers, err := dockertools.GetKubeletDockerContainers(kl.dockerClient, false)
	if err != nil {
		glog.Errorf("Error listing containers: %#v", dockerContainers)
		return err
	}

	// Check for any containers that need starting
	for ix := range pods {
		pod := &pods[ix]
		podFullName := GetPodFullName(pod)
		uuid := pod.UID
		desiredPods[uuid] = empty{}

		// Add all containers (including net) to the map.
		desiredContainers[podContainer{podFullName, uuid, networkContainerName}] = empty{}
		for _, cont := range pod.Spec.Containers {
			desiredContainers[podContainer{podFullName, uuid, cont.Name}] = empty{}
		}

		// Run the sync in an async manifest worker.
		kl.podWorkers.Run(podFullName, func() {
			if err := kl.syncPod(pod, dockerContainers); err != nil {
				glog.Errorf("Error syncing pod, skipping: %v", err)
				record.Eventf(pod, "", "failedSync", "Error syncing pod, skipping: %v", err)
			}
		})
	}
	if !kl.sourcesReady() {
		// If the sources aren't ready, skip deletion, as we may accidentally delete pods
		// for sources that haven't reported yet.
		glog.V(4).Infof("Skipping deletes, sources aren't ready yet.")
		return nil
	}
	// Kill any containers we don't need.
	for _, container := range dockerContainers {
		// Don't kill containers that are in the desired pods.
		podFullName, uuid, containerName, _ := dockertools.ParseDockerName(container.Names[0])
		if _, found := desiredPods[uuid]; found {
			// syncPod() will handle this one.
			continue
		}
		pc := podContainer{podFullName, uuid, containerName}
		if _, ok := desiredContainers[pc]; !ok {
			glog.V(1).Infof("Killing unwanted container %+v", pc)
			err = kl.killContainer(container)
			if err != nil {
				glog.Errorf("Error killing container %+v: %v", pc, err)
			}
		}
	}

	// Remove any orphaned volumes.
	kl.reconcileVolumes(pods)

	return err
}

func TestEventf(t *testing.T) {
	testPod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			SelfLink:  "/api/v1beta1/pods/foo",
			Name:      "foo",
			Namespace: "baz",
			UID:       "bar",
		},
	}
	testRef, err := api.GetPartialReference(testPod, "desiredState.manifest.containers[2]")
	if err != nil {
		t.Fatal(err)
	}
	table := []struct {
		obj            runtime.Object
		status, reason string
		messageFmt     string
		elements       []interface{}
		expect         *api.Event
		expectLog      string
	}{
		{
			obj:        testRef,
			status:     "running",
			reason:     "started",
			messageFmt: "some verbose message: %v",
			elements:   []interface{}{1},
			expect: &api.Event{
				ObjectMeta: api.ObjectMeta{
					Name:      "foo",
					Namespace: "baz",
				},
				InvolvedObject: api.ObjectReference{
					Kind:       "Pod",
					Name:       "foo",
					Namespace:  "baz",
					UID:        "bar",
					APIVersion: "v1beta1",
					FieldPath:  "desiredState.manifest.containers[2]",
				},
				Status:  "running",
				Reason:  "started",
				Message: "some verbose message: 1",
				Source:  "eventTest",
			},
			expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"bar", APIVersion:"v1beta1", ResourceVersion:"", FieldPath:"desiredState.manifest.containers[2]"}): status: 'running', reason: 'started' some verbose message: 1`,
		},
		{
			obj:        testPod,
			status:     "running",
			reason:     "started",
			messageFmt: "some verbose message: %v",
			elements:   []interface{}{1},
			expect: &api.Event{
				ObjectMeta: api.ObjectMeta{
					Name:      "foo",
					Namespace: "baz",
				},
				InvolvedObject: api.ObjectReference{
					Kind:       "Pod",
					Name:       "foo",
					Namespace:  "baz",
					UID:        "bar",
					APIVersion: "v1beta1",
				},
				Status:  "running",
				Reason:  "started",
				Message: "some verbose message: 1",
				Source:  "eventTest",
			},
			expectLog: `Event(api.ObjectReference{Kind:"Pod", Namespace:"baz", Name:"foo", UID:"bar", APIVersion:"v1beta1", ResourceVersion:"", FieldPath:""}): status: 'running', reason: 'started' some verbose message: 1`,
		},
	}

	for _, item := range table {
		called := make(chan struct{})
		testEvents := testEventRecorder{
			OnEvent: func(event *api.Event) (*api.Event, error) {
				a := *event
				// Just check that the timestamp was set.
				if a.Timestamp.IsZero() {
					t.Errorf("timestamp wasn't set")
				}
				a.Timestamp = item.expect.Timestamp
				// Check that name has the right prefix.
				if n, en := a.Name, item.expect.Name; !strings.HasPrefix(n, en) {
					t.Errorf("Name '%v' does not contain prefix '%v'", n, en)
				}
				a.Name = item.expect.Name
				if e, a := item.expect, &a; !reflect.DeepEqual(e, a) {
					t.Errorf("diff: %s", util.ObjectDiff(e, a))
				}
				called <- struct{}{}
				return event, nil
			},
		}
		recorder := record.StartRecording(&testEvents, "eventTest")
		logger := record.StartLogging(t.Logf) // Prove that it is useful
		logger2 := record.StartLogging(func(formatter string, args ...interface{}) {
			if e, a := item.expectLog, fmt.Sprintf(formatter, args...); e != a {
//.........这里部分代码省略.........