Golang Factory.ClientConfig方法代码示例

func RunProxy(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
	port := cmdutil.GetFlagInt(cmd, "port")
	fmt.Fprintf(out, "Starting to serve on localhost:%d", port)

	clientConfig, err := f.ClientConfig()
	if err != nil {
		return err
	}

	staticPrefix := cmdutil.GetFlagString(cmd, "www-prefix")
	if !strings.HasSuffix(staticPrefix, "/") {
		staticPrefix += "/"
	}

	apiProxyPrefix := cmdutil.GetFlagString(cmd, "api-prefix")
	if !strings.HasSuffix(apiProxyPrefix, "/") {
		apiProxyPrefix += "/"
	}
	server, err := kubectl.NewProxyServer(cmdutil.GetFlagString(cmd, "www"), apiProxyPrefix, staticPrefix, clientConfig)
	if err != nil {
		return err
	}

	glog.Fatal(server.Serve(port))
	return nil
}

// Complete verifies command line arguments and loads data from the command environment
func (p *AttachOptions) Complete(f *cmdutil.Factory, cmd *cobra.Command, argsIn []string) error {
	if len(argsIn) == 0 {
		return cmdutil.UsageError(cmd, "POD is required for attach")
	}
	if len(argsIn) > 1 {
		return cmdutil.UsageError(cmd, fmt.Sprintf("expected a single argument: POD, saw %d: %s", len(argsIn), argsIn))
	}
	p.PodName = argsIn[0]

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}
	p.Namespace = namespace

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}
	p.Config = config

	client, err := f.Client()
	if err != nil {
		return err
	}
	p.Client = client

	return nil
}

func RunPortForward(f *cmdutil.Factory, cmd *cobra.Command, args []string) error {
	podName := cmdutil.GetFlagString(cmd, "pod")
	if len(podName) == 0 {
		return cmdutil.UsageError(cmd, "POD is required for exec")
	}

	if len(args) < 1 {
		return cmdutil.UsageError(cmd, "at least 1 PORT is required for port-forward")
	}

	namespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, err := f.Client()
	if err != nil {
		return err
	}

	pod, err := client.Pods(namespace).Get(podName)
	if err != nil {
		return err
	}

	if pod.Status.Phase != api.PodRunning {
		glog.Fatalf("Unable to execute command because pod is not running. Current status=%v", pod.Status.Phase)
	}

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}

	signals := make(chan os.Signal, 1)
	signal.Notify(signals, os.Interrupt)
	defer signal.Stop(signals)

	stopCh := make(chan struct{}, 1)
	go func() {
		<-signals
		close(stopCh)
	}()

	req := client.RESTClient.Get().
		Prefix("proxy").
		Resource("nodes").
		Name(pod.Spec.Host).
		Suffix("portForward", namespace, podName)

	pf, err := portforward.New(req, config, args, stopCh)
	if err != nil {
		return err
	}

	return pf.ForwardPorts()
}

func RunClusterInfo(factory *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
	if os.Args[1] == "clusterinfo" {
		printDeprecationWarning("cluster-info", "clusterinfo")
	}

	client, err := factory.ClientConfig()
	if err != nil {
		return err
	}
	printService(out, "Kubernetes master", client.Host)

	mapper, typer := factory.Object()
	cmdNamespace := cmdutil.GetFlagString(cmd, "namespace")
	if cmdNamespace == "" {
		cmdNamespace = api.NamespaceSystem
	}

	// TODO use generalized labels once they are implemented (#341)
	b := resource.NewBuilder(mapper, typer, factory.ClientMapperForCommand()).
		NamespaceParam(cmdNamespace).DefaultNamespace().
		SelectorParam("kubernetes.io/cluster-service=true").
		ResourceTypeOrNameArgs(false, []string{"services"}...).
		Latest()
	b.Do().Visit(func(r *resource.Info) error {
		services := r.Object.(*api.ServiceList).Items
		for _, service := range services {
			var link string
			if len(service.Status.LoadBalancer.Ingress) > 0 {
				ingress := service.Status.LoadBalancer.Ingress[0]
				ip := ingress.IP
				if ip == "" {
					ip = ingress.Hostname
				}
				for _, port := range service.Spec.Ports {
					link += "http://" + ip + ":" + strconv.Itoa(port.Port) + " "
				}
			} else {
				link = client.Host + "/api/" + client.Version + "/proxy/namespaces/" + service.ObjectMeta.Namespace + "/services/" + service.ObjectMeta.Name
			}
			name := service.ObjectMeta.Labels["kubernetes.io/name"]
			if len(name) == 0 {
				name = service.ObjectMeta.Name
			}
			printService(out, name, link)
		}
		return nil
	})
	return nil

	// TODO consider printing more information about cluster
}

func RunProxy(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
	port := cmdutil.GetFlagInt(cmd, "port")

	clientConfig, err := f.ClientConfig()
	if err != nil {
		return err
	}

	staticPrefix := cmdutil.GetFlagString(cmd, "www-prefix")
	if !strings.HasSuffix(staticPrefix, "/") {
		staticPrefix += "/"
	}

	apiProxyPrefix := cmdutil.GetFlagString(cmd, "api-prefix")
	if !strings.HasSuffix(apiProxyPrefix, "/") {
		apiProxyPrefix += "/"
	}
	filter := &kubectl.FilterServer{
		AcceptPaths: kubectl.MakeRegexpArrayOrDie(cmdutil.GetFlagString(cmd, "accept-paths")),
		RejectPaths: kubectl.MakeRegexpArrayOrDie(cmdutil.GetFlagString(cmd, "reject-paths")),
		AcceptHosts: kubectl.MakeRegexpArrayOrDie(cmdutil.GetFlagString(cmd, "accept-hosts")),
	}
	if cmdutil.GetFlagBool(cmd, "disable-filter") {
		glog.Warning("Request filter disabled, your proxy is vulnerable to XSRF attacks, please be cautious")
		filter = nil
	}

	server, err := kubectl.NewProxyServer(port, cmdutil.GetFlagString(cmd, "www"), apiProxyPrefix, staticPrefix, filter, clientConfig)
	if err != nil {
		return err
	}

	// Separate listening from serving so we can report the bound port
	// when it is chosen by os (port == 0)
	l, err := server.Listen()
	if err != nil {
		glog.Fatal(err)
	}
	fmt.Fprintf(out, "Starting to serve on %s", l.Addr().String())
	glog.Fatal(server.ServeOnListener(l))
	return nil
}

func RunClusterInfo(factory *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
	if os.Args[1] == "clusterinfo" {
		printDeprecationWarning("cluster-info", "clusterinfo")
	}

	client, err := factory.ClientConfig()
	if err != nil {
		return err
	}
	printService(out, "Kubernetes master", client.Host, false)

	mapper, typer := factory.Object()
	cmdNamespace, err := factory.DefaultNamespace()
	if err != nil {
		return err
	}

	// TODO use generalized labels once they are implemented (#341)
	b := resource.NewBuilder(mapper, typer, factory.ClientMapperForCommand()).
		NamespaceParam(cmdNamespace).DefaultNamespace().
		SelectorParam("kubernetes.io/cluster-service=true").
		ResourceTypeOrNameArgs(false, []string{"services"}...).
		Latest()
	b.Do().Visit(func(r *resource.Info) error {
		services := r.Object.(*api.ServiceList).Items
		for _, service := range services {
			splittedLink := strings.Split(strings.Split(service.ObjectMeta.SelfLink, "?")[0], "/")
			// insert "proxy" into the link
			splittedLink = append(splittedLink, "")
			copy(splittedLink[4:], splittedLink[3:])
			splittedLink[3] = "proxy"
			link := client.Host + strings.Join(splittedLink, "/") + "/"
			printService(out, service.ObjectMeta.Labels["name"], link, true)
		}
		return nil
	})
	return nil

	// TODO consider printing more information about cluster
}

// Complete verifies command line arguments and loads data from the command environment
func (p *ExecOptions) Complete(f *cmdutil.Factory, cmd *cobra.Command, argsIn []string) error {
	if len(p.PodName) == 0 && len(argsIn) == 0 {
		return cmdutil.UsageError(cmd, "POD is required for exec")
	}
	if len(p.PodName) != 0 {
		printDeprecationWarning("exec POD", "-p POD")
		if len(argsIn) < 1 {
			return cmdutil.UsageError(cmd, "COMMAND is required for exec")
		}
		p.Command = argsIn
	} else {
		p.PodName = argsIn[0]
		p.Command = argsIn[1:]
		if len(p.Command) < 1 {
			return cmdutil.UsageError(cmd, "COMMAND is required for exec")
		}
	}

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}
	p.Namespace = namespace

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}
	p.Config = config

	client, err := f.Client()
	if err != nil {
		return err
	}
	p.Client = client

	return nil
}

func RunProxy(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command) error {
	port := cmdutil.GetFlagInt(cmd, "port")
	fmt.Fprintf(out, "Starting to serve on localhost:%d", port)

	clientConfig, err := f.ClientConfig()
	if err != nil {
		return err
	}

	staticPrefix := cmdutil.GetFlagString(cmd, "www-prefix")
	if !strings.HasSuffix(staticPrefix, "/") {
		staticPrefix += "/"
	}

	apiProxyPrefix := cmdutil.GetFlagString(cmd, "api-prefix")
	if !strings.HasSuffix(apiProxyPrefix, "/") {
		apiProxyPrefix += "/"
	}
	filter := &kubectl.FilterServer{
		AcceptPaths: kubectl.MakeRegexpArrayOrDie(cmdutil.GetFlagString(cmd, "accept-paths")),
		RejectPaths: kubectl.MakeRegexpArrayOrDie(cmdutil.GetFlagString(cmd, "reject-paths")),
		AcceptHosts: kubectl.MakeRegexpArrayOrDie(cmdutil.GetFlagString(cmd, "accept-hosts")),
	}
	if cmdutil.GetFlagBool(cmd, "disable-filter") {
		glog.Warning("Request filter disabled, your proxy is vulnerable to XSRF attacks, please be cautious")
		filter = nil
	}

	server, err := kubectl.NewProxyServer(cmdutil.GetFlagString(cmd, "www"), apiProxyPrefix, staticPrefix, filter, clientConfig)
	if err != nil {
		return err
	}

	glog.Fatal(server.Serve(port))
	return nil
}

func RunExec(f *cmdutil.Factory, cmd *cobra.Command, cmdIn io.Reader, cmdOut, cmdErr io.Writer, p *execParams, args []string, re remoteExecutor) error {
	if len(p.podName) == 0 {
		return cmdutil.UsageError(cmd, "POD is required for exec")
	}

	if len(args) < 1 {
		return cmdutil.UsageError(cmd, "COMMAND is required for exec")
	}
	namespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, err := f.Client()
	if err != nil {
		return err
	}

	pod, err := client.Pods(namespace).Get(p.podName)
	if err != nil {
		return err
	}

	if pod.Status.Phase != api.PodRunning {
		glog.Fatalf("Unable to execute command because pod is not running. Current status=%v", pod.Status.Phase)
	}

	containerName := p.containerName
	if len(containerName) == 0 {
		containerName = pod.Spec.Containers[0].Name
	}

	var stdin io.Reader
	tty := p.tty
	if p.stdin {
		stdin = cmdIn
		if tty {
			if file, ok := cmdIn.(*os.File); ok {
				inFd := file.Fd()
				if term.IsTerminal(inFd) {
					oldState, err := term.SetRawTerminal(inFd)
					if err != nil {
						glog.Fatal(err)
					}
					// this handles a clean exit, where the command finished
					defer term.RestoreTerminal(inFd, oldState)

					// SIGINT is handled by term.SetRawTerminal (it runs a goroutine that listens
					// for SIGINT and restores the terminal before exiting)

					// this handles SIGTERM
					sigChan := make(chan os.Signal, 1)
					signal.Notify(sigChan, syscall.SIGTERM)
					go func() {
						<-sigChan
						term.RestoreTerminal(inFd, oldState)
						os.Exit(0)
					}()
				} else {
					glog.Warning("Stdin is not a terminal")
				}
			} else {
				tty = false
				glog.Warning("Unable to use a TTY")
			}
		}
	}

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}

	req := client.RESTClient.Get().
		Resource("pods").
		Name(pod.Name).
		Namespace(namespace).
		SubResource("exec").
		Param("container", containerName)

	return re.Execute(req, config, args, stdin, cmdOut, cmdErr, tty)
}

func RunPortForward(f *cmdutil.Factory, cmd *cobra.Command, args []string, fw portForwarder) error {
	podName := cmdutil.GetFlagString(cmd, "pod")
	if len(podName) == 0 {
		return cmdutil.UsageError(cmd, "POD is required for exec")
	}
	if len(args) < 1 {
		return cmdutil.UsageError(cmd, "at least 1 PORT is required for port-forward")
	}

	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, err := f.Client()
	if err != nil {
		return err
	}

	pod, err := client.Pods(namespace).Get(podName)
	if err != nil {
		return err
	}

	if pod.Status.Phase != api.PodRunning {
		glog.Fatalf("Unable to execute command because pod is not running. Current status=%v", pod.Status.Phase)
	}

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}

	signals := make(chan os.Signal, 1)
	signal.Notify(signals, os.Interrupt)
	defer signal.Stop(signals)

	stopCh := make(chan struct{}, 1)
	go func() {
		<-signals
		close(stopCh)
	}()

	req := client.RESTClient.Post().
		Resource("pods").
		Namespace(namespace).
		Name(pod.Name).
		SubResource("portforward")

	postErr := fw.ForwardPorts(req, config, args, stopCh)

	// if we don't have an error, return.  If we did get an error, try a GET because v3.0.0 shipped with port-forward running as a GET.
	if postErr == nil {
		return nil
	}

	// only try the get if the error is either a forbidden or method not supported, otherwise trying with a GET probably won't help
	if !apierrors.IsForbidden(postErr) && !apierrors.IsMethodNotSupported(postErr) {
		return postErr
	}

	getReq := client.RESTClient.Get().
		Resource("pods").
		Namespace(namespace).
		Name(pod.Name).
		SubResource("portforward")
	getErr := fw.ForwardPorts(getReq, config, args, stopCh)
	if getErr == nil {
		return nil
	}

	// if we got a getErr, return the postErr because it's more likely to be correct.  GET is legacy
	return postErr
}

// RunGet implements the generic Get command
// TODO: convert all direct flag accessors to a struct and pass that instead of cmd
func RunGet(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	selector := cmdutil.GetFlagString(cmd, "selector")
	allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
	mapper, typer := f.Object()

	cmdNamespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	if len(args) == 0 {
		fmt.Fprint(out, `
You must specify the type of resource to get. Valid resource types include:
   * pods (aka 'po')
   * replicationcontrollers (aka 'rc')
   * services
   * nodes (aka 'no')
   * events (aka 'ev')
   * secrets
   * limits
   * persistentVolumes (aka 'pv')
   * persistentVolumeClaims (aka 'pvc')
   * quota
`)
		return errors.New("Required resource not specified.")
	}

	// handle watch separately since we cannot watch multiple resource types
	isWatch, isWatchOnly := cmdutil.GetFlagBool(cmd, "watch"), cmdutil.GetFlagBool(cmd, "watch-only")
	if isWatch || isWatchOnly {
		r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
			NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
			SelectorParam(selector).
			ResourceTypeOrNameArgs(true, args...).
			SingleResourceType().
			Do()
		if err != nil {
			return err
		}

		mapping, err := r.ResourceMapping()
		if err != nil {
			return err
		}

		printer, err := f.PrinterForMapping(cmd, mapping, allNamespaces)
		if err != nil {
			return err
		}

		obj, err := r.Object()
		if err != nil {
			return err
		}

		rv, err := mapping.MetadataAccessor.ResourceVersion(obj)
		if err != nil {
			return err
		}

		// print the current object
		if !isWatchOnly {
			if err := printer.PrintObj(obj, out); err != nil {
				return fmt.Errorf("unable to output the provided object: %v", err)
			}
		}

		// print watched changes
		w, err := r.Watch(rv)
		if err != nil {
			return err
		}

		kubectl.WatchLoop(w, func(e watch.Event) error {
			return printer.PrintObj(e.Object, out)
		})
		return nil
	}

	b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
		SelectorParam(selector).
		ResourceTypeOrNameArgs(true, args...).
		ContinueOnError().
		Latest()
	printer, generic, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return err
	}

	if generic {
		clientConfig, err := f.ClientConfig()
		if err != nil {
			return err
		}
		defaultVersion := clientConfig.Version

		singular := false
//.........这里部分代码省略.........

func RunExec(f *cmdutil.Factory, cmd *cobra.Command, cmdIn io.Reader, cmdOut, cmdErr io.Writer, p *execParams, argsIn []string, re remoteExecutor) error {
	podName, containerName, args, err := extractPodAndContainer(cmd, argsIn, p)
	namespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	client, err := f.Client()
	if err != nil {
		return err
	}

	pod, err := client.Pods(namespace).Get(podName)
	if err != nil {
		return err
	}

	if pod.Status.Phase != api.PodRunning {
		glog.Fatalf("Unable to execute command because pod %s is not running. Current status=%v", podName, pod.Status.Phase)
	}

	if len(containerName) == 0 {
		glog.V(4).Infof("defaulting container name to %s", pod.Spec.Containers[0].Name)
		containerName = pod.Spec.Containers[0].Name
	}

	var stdin io.Reader
	tty := p.tty
	if p.stdin {
		stdin = cmdIn
		if tty {
			if file, ok := cmdIn.(*os.File); ok {
				inFd := file.Fd()
				if term.IsTerminal(inFd) {
					oldState, err := term.SetRawTerminal(inFd)
					if err != nil {
						glog.Fatal(err)
					}
					// this handles a clean exit, where the command finished
					defer term.RestoreTerminal(inFd, oldState)

					// SIGINT is handled by term.SetRawTerminal (it runs a goroutine that listens
					// for SIGINT and restores the terminal before exiting)

					// this handles SIGTERM
					sigChan := make(chan os.Signal, 1)
					signal.Notify(sigChan, syscall.SIGTERM)
					go func() {
						<-sigChan
						term.RestoreTerminal(inFd, oldState)
						os.Exit(0)
					}()
				} else {
					glog.Warning("Stdin is not a terminal")
				}
			} else {
				tty = false
				glog.Warning("Unable to use a TTY")
			}
		}
	}

	config, err := f.ClientConfig()
	if err != nil {
		return err
	}

	req := client.RESTClient.Post().
		Resource("pods").
		Name(pod.Name).
		Namespace(namespace).
		SubResource("exec").
		Param("container", containerName)

	postErr := re.Execute(req, config, args, stdin, cmdOut, cmdErr, tty)

	// if we don't have an error, return.  If we did get an error, try a GET because v3.0.0 shipped with exec running as a GET.
	if postErr == nil {
		return nil
	}

	// only try the get if the error is either a forbidden or method not supported, otherwise trying with a GET probably won't help
	if !apierrors.IsForbidden(postErr) && !apierrors.IsMethodNotSupported(postErr) {
		return postErr
	}

	getReq := client.RESTClient.Get().
		Resource("pods").
		Name(pod.Name).
		Namespace(namespace).
		SubResource("exec").
		Param("container", containerName)
	getErr := re.Execute(getReq, config, args, stdin, cmdOut, cmdErr, tty)
	if getErr == nil {
		return nil
	}

	// if we got a getErr, return the postErr because it's more likely to be correct.  GET is legacy
	return postErr
}

// RunGet implements the generic Get command
// TODO: convert all direct flag accessors to a struct and pass that instead of cmd
func RunGet(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	selector := cmdutil.GetFlagString(cmd, "selector")
	mapper, typer := f.Object()

	cmdNamespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}

	// handle watch separately since we cannot watch multiple resource types
	isWatch, isWatchOnly := cmdutil.GetFlagBool(cmd, "watch"), cmdutil.GetFlagBool(cmd, "watch-only")
	if isWatch || isWatchOnly {
		r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
			NamespaceParam(cmdNamespace).DefaultNamespace().
			SelectorParam(selector).
			ResourceTypeOrNameArgs(true, args...).
			SingleResourceType().
			Do()
		if err != nil {
			return err
		}

		mapping, err := r.ResourceMapping()
		if err != nil {
			return err
		}

		printer, err := f.PrinterForMapping(cmd, mapping)
		if err != nil {
			return err
		}

		obj, err := r.Object()
		if err != nil {
			return err
		}

		rv, err := mapping.MetadataAccessor.ResourceVersion(obj)
		if err != nil {
			return err
		}

		// print the current object
		if !isWatchOnly {
			if err := printer.PrintObj(obj, out); err != nil {
				return fmt.Errorf("unable to output the provided object: %v", err)
			}
		}

		// print watched changes
		w, err := r.Watch(rv)
		if err != nil {
			return err
		}

		kubectl.WatchLoop(w, func(e watch.Event) error {
			return printer.PrintObj(e.Object, out)
		})
		return nil
	}

	b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		NamespaceParam(cmdNamespace).DefaultNamespace().
		SelectorParam(selector).
		ResourceTypeOrNameArgs(true, args...).
		ContinueOnError().
		Latest()
	printer, generic, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return err
	}

	if generic {
		clientConfig, err := f.ClientConfig()
		if err != nil {
			return err
		}
		defaultVersion := clientConfig.Version

		singular := false
		r := b.Flatten().Do()
		infos, err := r.IntoSingular(&singular).Infos()
		if err != nil {
			return err
		}

		// the outermost object will be converted to the output-version, but inner
		// objects can use their mappings
		version := cmdutil.OutputVersion(cmd, defaultVersion)
		obj, err := resource.AsVersionedObject(infos, !singular, version)
		if err != nil {
			return err
		}

		return printer.PrintObj(obj, out)
	}

	// use the default printer for each object
//.........这里部分代码省略.........