Golang container.GetPodFullName函数代码示例

//openPodHostports opens all hostport for pod and returns the map of hostport and socket
func (plugin *kubenetNetworkPlugin) openPodHostports(pod *api.Pod) (map[hostport]closeable, error) {
	var retErr error
	hostportMap := make(map[hostport]closeable)
	for _, container := range pod.Spec.Containers {
		for _, port := range container.Ports {
			if port.HostPort <= 0 {
				// Ignore
				continue
			}
			hp := hostport{
				port:     port.HostPort,
				protocol: strings.ToLower(string(port.Protocol)),
			}
			socket, err := openLocalPort(&hp)
			if err != nil {
				retErr = fmt.Errorf("Cannot open hostport %d for pod %s: %v", port.HostPort, kubecontainer.GetPodFullName(pod), err)
				break
			}
			hostportMap[hp] = socket
		}
		if retErr != nil {
			break
		}
	}
	// If encounter any error, close all hostports that just got opened.
	if retErr != nil {
		for hp, socket := range hostportMap {
			if err := socket.Close(); err != nil {
				glog.Errorf("Cannot clean up hostport %d for pod %s: %v", hp.port, kubecontainer.GetPodFullName(pod), err)
			}
		}
	}
	return hostportMap, retErr
}

// gatherAllHostports returns all hostports that should be presented on node
func (plugin *kubenetNetworkPlugin) gatherAllHostports() (map[api.ContainerPort]targetPod, error) {
	podHostportMap := make(map[api.ContainerPort]targetPod)
	pods, err := plugin.host.GetRuntime().GetPods(false)
	if err != nil {
		return nil, fmt.Errorf("Failed to retrieve pods from runtime: %v", err)
	}
	for _, p := range pods {
		var podInfraContainerId kubecontainer.ContainerID
		for _, c := range p.Containers {
			if c.Name == dockertools.PodInfraContainerName {
				podInfraContainerId = c.ID
				break
			}
		}
		// Assuming if kubenet has the pod's ip, the pod is alive and its host port should be presented.
		podIP, ok := plugin.podIPs[podInfraContainerId]
		if !ok {
			// The POD has been delete. Ignore
			continue
		}
		// Need the complete api.Pod object
		pod, ok := plugin.host.GetPodByName(p.Namespace, p.Name)
		if ok {
			for _, container := range pod.Spec.Containers {
				for _, port := range container.Ports {
					if port.HostPort != 0 {
						podHostportMap[port] = targetPod{podFullName: kubecontainer.GetPodFullName(pod), podIP: podIP}
					}
				}
			}
		}
	}
	return podHostportMap, nil
}

// handleRun handles requests to run a command inside a container.
func (s *Server) handleRun(w http.ResponseWriter, req *http.Request) {
	u, err := url.ParseRequestURI(req.RequestURI)
	if err != nil {
		s.error(w, err)
		return
	}
	podNamespace, podID, uid, container, err := parseContainerCoordinates(u.Path)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	pod, ok := s.host.GetPodByName(podNamespace, podID)
	if !ok {
		http.Error(w, "Pod does not exist", http.StatusNotFound)
		return
	}
	command := strings.Split(u.Query().Get("cmd"), " ")
	data, err := s.host.RunInContainer(kubecontainer.GetPodFullName(pod), uid, container, command)
	if err != nil {
		s.error(w, err)
		return
	}
	w.Header().Add("Content-type", "text/plain")
	w.Write(data)
}

// ProbeReadiness probes and sets the readiness of a container.
func (pb *prober) ProbeReadiness(pod *api.Pod, status api.PodStatus, container api.Container, containerID string) (probe.Result, error) {
	var ready probe.Result
	var output string
	var err error
	p := container.ReadinessProbe
	if p == nil {
		ready = probe.Success
	} else {
		ready, output, err = pb.runProbeWithRetries(p, pod, status, container, containerID, maxProbeRetries)
	}
	ctrName := fmt.Sprintf("%s:%s", kubecontainer.GetPodFullName(pod), container.Name)
	if err != nil || ready == probe.Failure {
		// Readiness failed in one way or another.
		ref, ok := pb.refManager.GetRef(containerID)
		if !ok {
			glog.Warningf("No ref for pod '%v' - '%v'", containerID, container.Name)
		}
		if err != nil {
			glog.V(1).Infof("readiness probe for %q errored: %v", ctrName, err)
			if ok {
				pb.recorder.Eventf(ref, "Unhealthy", "Readiness probe errored: %v", err)
			}
		} else { // ready != probe.Success
			glog.V(1).Infof("Readiness probe for %q failed (%v): %s", ctrName, ready, output)
			if ok {
				pb.recorder.Eventf(ref, "Unhealthy", "Readiness probe failed: %s", output)
			}
		}
		return probe.Failure, err
	}

	glog.V(3).Infof("Readiness probe for %q succeeded", ctrName)
	return ready, nil
}

// syncBatch syncs pods statuses with the apiserver.
func (s *statusManager) syncBatch() error {
	syncRequest := <-s.podStatusChannel
	pod := syncRequest.pod
	podFullName := kubecontainer.GetPodFullName(pod)
	status := syncRequest.status

	var err error
	statusPod := &api.Pod{
		ObjectMeta: pod.ObjectMeta,
	}
	// TODO: make me easier to express from client code
	statusPod, err = s.kubeClient.Pods(statusPod.Namespace).Get(statusPod.Name)
	if err == nil {
		statusPod.Status = status
		_, err = s.kubeClient.Pods(pod.Namespace).UpdateStatus(statusPod)
		// TODO: handle conflict as a retry, make that easier too.
		if err == nil {
			glog.V(3).Infof("Status for pod %q updated successfully", kubeletUtil.FormatPodName(pod))
			return nil
		}
	}

	// We failed to update status. In order to make sure we retry next time
	// we delete cached value. This may result in an additional update, but
	// this is ok.
	// Doing this synchronously will lead to a deadlock if the podStatusChannel
	// is full, and the pod worker holding the lock is waiting on this method
	// to clear the channel. Even if this delete never runs subsequent container
	// changes on the node should trigger updates.
	go s.DeletePodStatus(podFullName)
	return fmt.Errorf("error updating status for pod %q: %v", kubeletUtil.FormatPodName(pod), err)
}

// getPortForward handles a new restful port forward request. It determines the
// pod name and uid and then calls ServePortForward.
func (s *Server) getPortForward(request *restful.Request, response *restful.Response) {
	params := getRequestParams(request)
	pod, ok := s.host.GetPodByName(params.podNamespace, params.podName)
	if !ok {
		response.WriteError(http.StatusNotFound, fmt.Errorf("pod does not exist"))
		return
	}
	if len(params.podUID) > 0 && pod.UID != params.podUID {
		response.WriteError(http.StatusNotFound, fmt.Errorf("pod not found"))
		return
	}

	redirect, err := s.host.GetPortForward(pod.Name, pod.Namespace, pod.UID)
	if err != nil {
		response.WriteError(streaming.HTTPStatus(err), err)
		return
	}
	if redirect != nil {
		http.Redirect(response.ResponseWriter, request.Request, redirect.String(), http.StatusFound)
		return
	}

	portforward.ServePortForward(response.ResponseWriter,
		request.Request,
		s.host,
		kubecontainer.GetPodFullName(pod),
		params.podUID,
		s.host.StreamingConnectionIdleTimeout(),
		remotecommand.DefaultStreamCreationTimeout)
}

func filterInvalidPods(pods []*api.Pod, source string, recorder record.EventRecorder) (filtered []*api.Pod) {
	names := sets.String{}
	for i, pod := range pods {
		var errlist []error
		if errs := validation.ValidatePod(pod); len(errs) != 0 {
			errlist = append(errlist, errs...)
			// If validation fails, don't trust it any further -
			// even Name could be bad.
		} else {
			name := kubecontainer.GetPodFullName(pod)
			if names.Has(name) {
				errlist = append(errlist, fielderrors.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)
			recorder.Eventf(pod, "FailedValidation", "Error validating pod %s from %s, ignoring: %v", name, source, err)
			continue
		}
		filtered = append(filtered, pod)
	}
	return
}

// handleExec handles requests to run a command inside a container.
func (s *Server) handleExec(w http.ResponseWriter, req *http.Request) {
	u, err := url.ParseRequestURI(req.RequestURI)
	if err != nil {
		s.error(w, err)
		return
	}
	podNamespace, podID, uid, container, err := parseContainerCoordinates(u.Path)
	if err != nil {
		http.Error(w, err.Error(), http.StatusBadRequest)
		return
	}
	pod, ok := s.host.GetPodByName(podNamespace, podID)
	if !ok {
		http.Error(w, "Pod does not exist", http.StatusNotFound)
		return
	}
	stdinStream, stdoutStream, stderrStream, errorStream, conn, tty, ok := s.createStreams(w, req)
	if conn != nil {
		defer conn.Close()
	}
	if !ok {
		return
	}
	err = s.host.ExecInContainer(kubecontainer.GetPodFullName(pod), uid, container, u.Query()[api.ExecCommandParamm], stdinStream, stdoutStream, stderrStream, tty)
	if err != nil {
		msg := fmt.Sprintf("Error executing command in container: %v", err)
		glog.Error(msg)
		errorStream.Write([]byte(msg))
	}
}

// probeLiveness probes the liveness of a container.
func (pb *prober) probeLiveness(pod *api.Pod, status api.PodStatus, container api.Container, containerID kubecontainer.ContainerID) (probe.Result, error) {
	var live probe.Result
	var output string
	var err error
	p := container.LivenessProbe
	if p == nil {
		return probe.Success, nil
	}
	live, output, err = pb.runProbeWithRetries(p, pod, status, container, containerID, maxProbeRetries)
	ctrName := fmt.Sprintf("%s:%s", kubecontainer.GetPodFullName(pod), container.Name)
	if err != nil || live != probe.Success {
		// Liveness failed in one way or another.
		ref, ok := pb.refManager.GetRef(containerID)
		if !ok {
			glog.Warningf("No ref for pod %q - '%v'", containerID, container.Name)
		}
		if err != nil {
			glog.V(1).Infof("Liveness probe for %q errored: %v", ctrName, err)
			if ok {
				pb.recorder.Eventf(ref, "Unhealthy", "Liveness probe errored: %v", err)
			}
			return probe.Unknown, err
		} else { // live != probe.Success
			glog.V(1).Infof("Liveness probe for %q failed (%v): %s", ctrName, live, output)
			if ok {
				pb.recorder.Eventf(ref, "Unhealthy", "Liveness probe failed: %s", output)
			}
			return live, nil
		}
	}
	glog.V(3).Infof("Liveness probe for %q succeeded", ctrName)
	return probe.Success, nil
}

func TestExecInContainerNoSuchPod(t *testing.T) {
	testKubelet := newTestKubelet(t, false /* controllerAttachDetachEnabled */)
	kubelet := testKubelet.kubelet
	fakeRuntime := testKubelet.fakeRuntime
	fakeCommandRunner := fakeContainerCommandRunner{}
	kubelet.runner = &fakeCommandRunner
	fakeRuntime.PodList = []*containertest.FakePod{}

	podName := "podFoo"
	podNamespace := "nsFoo"
	containerID := "containerFoo"
	err := kubelet.ExecInContainer(
		kubecontainer.GetPodFullName(&api.Pod{ObjectMeta: api.ObjectMeta{Name: podName, Namespace: podNamespace}}),
		"",
		containerID,
		[]string{"ls"},
		nil,
		nil,
		nil,
		false,
		nil,
	)
	require.Error(t, err)
	require.True(t, fakeCommandRunner.ID.IsEmpty(), "Unexpected invocation of runner.ExecInContainer")
}

// getExec handles requests to run a command inside a container.
func (s *Server) getExec(request *restful.Request, response *restful.Response) {
	params := getRequestParams(request)
	pod, ok := s.host.GetPodByName(params.podNamespace, params.podName)
	if !ok {
		response.WriteError(http.StatusNotFound, fmt.Errorf("pod does not exist"))
		return
	}

	podFullName := kubecontainer.GetPodFullName(pod)
	redirect, err := s.host.GetExec(podFullName, params.podUID, params.containerName, params.cmd, params.streamOpts)
	if err != nil {
		response.WriteError(streaming.HTTPStatus(err), err)
		return
	}
	if redirect != nil {
		http.Redirect(response.ResponseWriter, request.Request, redirect.String(), http.StatusFound)
		return
	}

	remotecommand.ServeExec(response.ResponseWriter,
		request.Request,
		s.host,
		podFullName,
		params.podUID,
		params.containerName,
		s.host.StreamingConnectionIdleTimeout(),
		remotecommand.DefaultStreamCreationTimeout,
		remotecommand.SupportedStreamingProtocols)
}

func (pb *prober) runProbe(p *api.Probe, pod *api.Pod, status api.PodStatus, container api.Container, containerID kubecontainer.ContainerID) (probe.Result, string, error) {
	timeout := time.Duration(p.TimeoutSeconds) * time.Second
	if p.Exec != nil {
		glog.V(4).Infof("Exec-Probe Pod: %v, Container: %v, Command: %v", pod, container, p.Exec.Command)
		return pb.exec.Probe(pb.newExecInContainer(container, containerID, p.Exec.Command))
	}
	if p.HTTPGet != nil {
		scheme := strings.ToLower(string(p.HTTPGet.Scheme))
		host := p.HTTPGet.Host
		if host == "" {
			host = status.PodIP
		}
		port, err := extractPort(p.HTTPGet.Port, container)
		if err != nil {
			return probe.Unknown, "", err
		}
		path := p.HTTPGet.Path
		glog.V(4).Infof("HTTP-Probe Host: %v://%v, Port: %v, Path: %v", scheme, host, port, path)
		url := formatURL(scheme, host, port, path)
		return pb.http.Probe(url, timeout)
	}
	if p.TCPSocket != nil {
		port, err := extractPort(p.TCPSocket.Port, container)
		if err != nil {
			return probe.Unknown, "", err
		}
		glog.V(4).Infof("TCP-Probe PodIP: %v, Port: %v, Timeout: %v", status.PodIP, port, timeout)
		return pb.tcp.Probe(status.PodIP, port, timeout)
	}
	glog.Warningf("Failed to find probe builder for container: %v", container)
	return probe.Unknown, "", fmt.Errorf("Missing probe handler for %s:%s", kubecontainer.GetPodFullName(pod), container.Name)
}

func filterInvalidPods(pods []*api.Pod, source string, recorder record.EventRecorder) (filtered []*api.Pod) {
	names := sets.String{}
	for i, pod := range pods {
		var errlist field.ErrorList
		if errs := validation.ValidatePod(pod); len(errs) != 0 {
			errlist = append(errlist, errs...)
			// If validation fails, don't trust it any further -
			// even Name could be bad.
		} else {
			name := kubecontainer.GetPodFullName(pod)
			if names.Has(name) {
				// TODO: when validation becomes versioned, this gets a bit
				// more complicated.
				errlist = append(errlist, field.Duplicate(field.NewPath("metadata", "name"), pod.Name))
			} else {
				names.Insert(name)
			}
		}
		if len(errlist) > 0 {
			name := bestPodIdentString(pod)
			err := errlist.ToAggregate()
			glog.Warningf("Pod[%d] (%s) from %s failed validation, ignoring: %v", i+1, name, source, err)
			recorder.Eventf(pod, api.EventTypeWarning, kubecontainer.FailedValidation, "Error validating pod %s from %s, ignoring: %v", name, source, err)
			continue
		}
		filtered = append(filtered, pod)
	}
	return
}

func (fmc *fakeMirrorClient) CreateMirrorPod(pod *api.Pod) error {
	fmc.mirrorPodLock.Lock()
	defer fmc.mirrorPodLock.Unlock()
	podFullName := kubecontainer.GetPodFullName(pod)
	fmc.mirrorPods.Insert(podFullName)
	fmc.createCounts[podFullName]++
	return nil
}

func (h *fakeHandler) SyncHostports(natInterfaceName string, runningPods []*hostport.RunningPod) error {
	for _, r := range runningPods {
		if r.IP.To4() == nil {
			return fmt.Errorf("Invalid or missing pod %s IP", kubecontainer.GetPodFullName(r.Pod))
		}
	}

	return nil
}