Golang util.GetFlagString函数代码示例

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
}

// RunNewApplication contains all the necessary functionality for the OpenShift cli new-app command
func RunNewApplication(fullName string, f *clientcmd.Factory, out io.Writer, c *cobra.Command, args []string, config *newcmd.AppConfig) error {
	if err := setupAppConfig(f, c, args, config); err != nil {
		return err
	}

	if config.Querying() {
		result, err := config.RunQuery(out, c.Out())
		if err != nil {
			return handleRunError(c, err)
		}

		if len(cmdutil.GetFlagString(c, "output")) != 0 {
			return f.Factory.PrintObject(c, result.List, out)
		}

		return printHumanReadableQueryResult(result, out, fullName)
	}
	if err := setAppConfigLabels(c, config); err != nil {
		return err
	}
	result, err := config.RunAll(out, c.Out())
	if err != nil {
		return handleRunError(c, err)
	}
	if err := setLabels(config.Labels, result); err != nil {
		return err
	}
	if len(cmdutil.GetFlagString(c, "output")) != 0 {
		return f.Factory.PrintObject(c, result.List, out)
	}
	if err := createObjects(f, out, result); err != nil {
		return err
	}

	hasMissingRepo := false
	for _, item := range result.List.Items {
		switch t := item.(type) {
		case *kapi.Service:
			portMappings := "."
			if len(t.Spec.Ports) > 0 {
				portMappings = fmt.Sprintf(" with port mappings %s.", describeServicePorts(t.Spec))
			}
			fmt.Fprintf(c.Out(), "Service %q created at %s%s\n", t.Name, t.Spec.ClusterIP, portMappings)
		case *buildapi.BuildConfig:
			fmt.Fprintf(c.Out(), "A build was created - you can run `%s start-build %s` to start it.\n", fullName, t.Name)
		case *imageapi.ImageStream:
			if len(t.Status.DockerImageRepository) == 0 {
				if hasMissingRepo {
					continue
				}
				hasMissingRepo = true
				fmt.Fprintf(c.Out(), "WARNING: We created an image stream %q, but it does not look like a Docker registry has been integrated with the server. Automatic builds and deployments depend on that integration to detect new images and will not function properly.\n", t.Name)
			}
		}
	}
	fmt.Fprintf(c.Out(), "Run '%s status' to view your app.\n", fullName)

	return nil
}

func Run(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	if len(os.Args) > 1 && os.Args[1] == "run-container" {
		printDeprecationWarning("run", "run-container")
	}

	if len(args) != 1 {
		return cmdutil.UsageError(cmd, "NAME is required for run")
	}

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

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

	generatorName := cmdutil.GetFlagString(cmd, "generator")
	generator, found := f.Generator(generatorName)
	if !found {
		return cmdutil.UsageError(cmd, fmt.Sprintf("Generator: %s not found.", generator))
	}
	names := generator.ParamNames()
	params := kubectl.MakeParams(cmd, names)
	params["name"] = args[0]

	err = kubectl.ValidateParams(names, params)
	if err != nil {
		return err
	}

	controller, err := generator.Generate(params)
	if err != nil {
		return err
	}

	inline := cmdutil.GetFlagString(cmd, "overrides")
	if len(inline) > 0 {
		controller, err = cmdutil.Merge(controller, inline, "ReplicationController")
		if err != nil {
			return err
		}
	}

	// TODO: extract this flag to a central location, when such a location exists.
	if !cmdutil.GetFlagBool(cmd, "dry-run") {
		controller, err = client.ReplicationControllers(namespace).Create(controller.(*api.ReplicationController))
		if err != nil {
			return err
		}
	}

	return f.PrintObject(cmd, controller, out)
}

func NewCmdCreateSecret(name, fullName string, f *clientcmd.Factory, out io.Writer) *cobra.Command {
	options := NewCreateSecretOptions()
	options.Out = out

	cmd := &cobra.Command{
		Use:     fmt.Sprintf("%s NAME [KEY=]SOURCE ...", name),
		Short:   "Create a new secret based on a key file or on files within a directory",
		Long:    newLong,
		Example: fmt.Sprintf(newExamples, fullName),
		Run: func(c *cobra.Command, args []string) {
			cmdutil.CheckErr(options.Complete(args, f))

			cmdutil.CheckErr(options.Validate())

			if len(cmdutil.GetFlagString(c, "output")) != 0 {
				secret, err := options.BundleSecret()
				cmdutil.CheckErr(err)

				cmdutil.CheckErr(f.Factory.PrintObject(c, secret, out))
				return
			}
			_, err := options.CreateSecret()
			cmdutil.CheckErr(err)
		},
	}

	cmd.Flags().BoolVarP(&options.Quiet, "quiet", "q", options.Quiet, "Suppress warnings")
	cmd.Flags().StringVar(&options.SecretTypeName, "type", "", "The type of secret")
	cmdutil.AddPrinterFlags(cmd)

	return cmd
}

func NewCmdStop(f *cmdutil.Factory, out io.Writer) *cobra.Command {
	flags := &struct {
		Filenames util.StringList
	}{}
	cmd := &cobra.Command{
		Use:     "stop (-f FILENAME | RESOURCE (NAME | -l label | --all))",
		Short:   "Gracefully shut down a resource by name or filename.",
		Long:    stop_long,
		Example: stop_example,
		Run: func(cmd *cobra.Command, args []string) {
			cmdutil.CheckErr(cmdutil.ValidateOutputArgs(cmd))
			shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
			cmdutil.CheckErr(RunStop(f, cmd, args, flags.Filenames, out, shortOutput))
		},
	}
	usage := "Filename, directory, or URL to file of resource(s) to be stopped."
	kubectl.AddJsonFilenameFlag(cmd, &flags.Filenames, usage)
	cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on.")
	cmd.Flags().Bool("all", false, "[-all] to select all the specified resources.")
	cmd.Flags().Bool("ignore-not-found", false, "Treat \"resource not found\" as a successful stop.")
	cmd.Flags().Int("grace-period", -1, "Period of time in seconds given to the resource to terminate gracefully. Ignored if negative.")
	cmd.Flags().Duration("timeout", 0, "The length of time to wait before giving up on a delete, zero means determine a timeout from the size of the object")
	cmdutil.AddOutputFlagsForMutation(cmd)
	return cmd
}

func NewCmdReplace(f *cmdutil.Factory, out io.Writer) *cobra.Command {
	var filenames util.StringList
	cmd := &cobra.Command{
		Use: "replace -f FILENAME",
		// update is deprecated.
		Aliases: []string{"update"},
		Short:   "Replace a resource by filename or stdin.",
		Long:    replace_long,
		Example: replace_example,
		Run: func(cmd *cobra.Command, args []string) {
			cmdutil.CheckErr(cmdutil.ValidateOutputArgs(cmd))
			shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
			err := RunReplace(f, out, cmd, args, filenames, shortOutput)
			cmdutil.CheckCustomErr("Replace failed", err)
		},
	}
	usage := "Filename, directory, or URL to file to use to replace the resource."
	kubectl.AddJsonFilenameFlag(cmd, &filenames, usage)
	cmd.MarkFlagRequired("filename")
	cmd.Flags().Bool("force", false, "Delete and re-create the specified resource")
	cmd.Flags().Bool("cascade", false, "Only relevant during a force replace. If true, cascade the deletion of the resources managed by this resource (e.g. Pods created by a ReplicationController).  Default true.")
	cmd.Flags().Int("grace-period", -1, "Only relevant during a force replace. Period of time in seconds given to the old resource to terminate gracefully. Ignored if negative.")
	cmd.Flags().Duration("timeout", 0, "Only relevant during a force replace. The length of time to wait before giving up on a delete of the old resource, zero means determine a timeout from the size of the object")
	cmdutil.AddOutputFlagsForMutation(cmd)
	return cmd
}

func RunDelete(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, filenames util.StringList) error {
	cmdNamespace, enforceNamespace, err := f.DefaultNamespace()
	if err != nil {
		return err
	}
	mapper, typer := f.Object()
	r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		ContinueOnError().
		NamespaceParam(cmdNamespace).DefaultNamespace().
		FilenameParam(enforceNamespace, filenames...).
		SelectorParam(cmdutil.GetFlagString(cmd, "selector")).
		SelectAllParam(cmdutil.GetFlagBool(cmd, "all")).
		ResourceTypeOrNameArgs(false, args...).RequireObject(false).
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}

	ignoreNotFound := cmdutil.GetFlagBool(cmd, "ignore-not-found")
	// By default use a reaper to delete all related resources.
	if cmdutil.GetFlagBool(cmd, "cascade") {
		return ReapResult(r, f, out, cmdutil.GetFlagBool(cmd, "cascade"), ignoreNotFound, cmdutil.GetFlagDuration(cmd, "timeout"), cmdutil.GetFlagInt(cmd, "grace-period"))
	}
	return DeleteResult(r, out, ignoreNotFound)
}

func NewCmdDelete(f *cmdutil.Factory, out io.Writer) *cobra.Command {
	var filenames util.StringList
	cmd := &cobra.Command{
		Use:     "delete ([-f FILENAME] | (RESOURCE [(NAME | -l label | --all)]",
		Short:   "Delete a resource by filename, stdin, resource and name, or by resources and label selector.",
		Long:    delete_long,
		Example: delete_example,
		Run: func(cmd *cobra.Command, args []string) {
			cmdutil.CheckErr(cmdutil.ValidateOutputArgs(cmd))
			shortOutput := cmdutil.GetFlagString(cmd, "output") == "name"
			err := RunDelete(f, out, cmd, args, filenames, shortOutput)
			cmdutil.CheckErr(err)
		},
	}
	usage := "Filename, directory, or URL to a file containing the resource to delete."
	kubectl.AddJsonFilenameFlag(cmd, &filenames, usage)
	cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on.")
	cmd.Flags().Bool("all", false, "[-all] to select all the specified resources.")
	cmd.Flags().Bool("ignore-not-found", false, "Treat \"resource not found\" as a successful delete. Defaults to \"true\" when --all is specified.")
	cmd.Flags().Bool("cascade", true, "If true, cascade the deletion of the resources managed by this resource (e.g. Pods created by a ReplicationController).  Default true.")
	cmd.Flags().Int("grace-period", -1, "Period of time in seconds given to the resource to terminate gracefully. Ignored if negative.")
	cmd.Flags().Duration("timeout", 0, "The length of time to wait before giving up on a delete, zero means determine a timeout from the size of the object")
	cmdutil.AddOutputFlagsForMutation(cmd)
	return cmd
}

func RunUpdate(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, filenames util.StringList) error {
	schema, err := f.Validator()
	if err != nil {
		return err
	}

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

	patch := cmdutil.GetFlagString(cmd, "patch")
	if len(filenames) == 0 && len(patch) == 0 {
		return cmdutil.UsageError(cmd, "Must specify --filename or --patch to update")
	}
	if len(filenames) != 0 && len(patch) != 0 {
		return cmdutil.UsageError(cmd, "Can not specify both --filename and --patch")
	}

	// TODO: Make patching work with -f, updating with patched JSON input files
	if len(filenames) == 0 {
		name, err := updateWithPatch(cmd, args, f, patch)
		if err != nil {
			return err
		}
		fmt.Fprintf(out, "%s\n", name)
		return nil
	}
	if len(filenames) == 0 {
		return cmdutil.UsageError(cmd, "Must specify --filename to update")
	}

	mapper, typer := f.Object()
	r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		Schema(schema).
		ContinueOnError().
		NamespaceParam(cmdNamespace).RequireNamespace().
		FilenameParam(filenames...).
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}

	return r.Visit(func(info *resource.Info) error {
		data, err := info.Mapping.Codec.Encode(info.Object)
		if err != nil {
			return err
		}
		obj, err := resource.NewHelper(info.Client, info.Mapping).Update(info.Namespace, info.Name, true, data)
		if err != nil {
			return err
		}
		info.Refresh(obj, true)
		printObjectSpecificMessage(obj, out)
		fmt.Fprintf(out, "%s/%s\n", info.Mapping.Resource, info.Name)
		return nil
	})
}

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

	if len(args) < 1 {
		return util.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("minions").
		Name(pod.Status.Host).
		Suffix("portForward", namespace, podName)

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

	return pf.ForwardPorts()
}

// RunScale executes the scaling
func RunScale(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string, shortOutput bool) error {
	if len(os.Args) > 1 && os.Args[1] == "resize" {
		printDeprecationWarning("scale", "resize")
	}

	count := cmdutil.GetFlagInt(cmd, "replicas")
	if count < 0 {
		return cmdutil.UsageError(cmd, "--replicas=COUNT RESOURCE NAME")
	}

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

	mapper, typer := f.Object()
	r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		ContinueOnError().
		NamespaceParam(cmdNamespace).DefaultNamespace().
		ResourceTypeOrNameArgs(false, args...).
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}
	mapping, err := r.ResourceMapping()
	if err != nil {
		return err
	}

	infos, err := r.Infos()
	if err != nil {
		return err
	}
	if len(infos) > 1 {
		return fmt.Errorf("multiple resources provided: %v", args)
	}
	info := infos[0]

	scaler, err := f.Scaler(mapping)
	if err != nil {
		return err
	}

	resourceVersion := cmdutil.GetFlagString(cmd, "resource-version")
	currentSize := cmdutil.GetFlagInt(cmd, "current-replicas")
	precondition := &kubectl.ScalePrecondition{currentSize, resourceVersion}
	retry := kubectl.NewRetryParams(kubectl.Interval, kubectl.Timeout)
	waitForReplicas := kubectl.NewRetryParams(kubectl.Interval, kubectl.Timeout)
	if err := scaler.Scale(info.Namespace, info.Name, uint(count), precondition, retry, waitForReplicas); err != nil {
		return err
	}
	cmdutil.PrintSuccess(mapper, shortOutput, out, info.Mapping.Resource, info.Name, "scaled")
	return nil
}

func setAppConfigLabels(c *cobra.Command, config *newcmd.AppConfig) error {
	labelStr := cmdutil.GetFlagString(c, "labels")
	if len(labelStr) != 0 {
		var err error
		config.Labels, err = ctl.ParseLabels(labelStr)
		if err != nil {
			return err
		}
	}
	return nil
}

// RunNewApplication contains all the necessary functionality for the OpenShift cli new-app command
func RunNewApplication(fullName string, f *clientcmd.Factory, out io.Writer, c *cobra.Command, args []string, config *newcmd.AppConfig) error {
	if err := setupAppConfig(f, c, args, config); err != nil {
		return err
	}

	result, err := config.RunAll(out, c.Out())
	if err != nil {
		if errs, ok := err.(errors.Aggregate); ok {
			if len(errs.Errors()) == 1 {
				err = errs.Errors()[0]
			}
		}
		if err == newcmd.ErrNoInputs {
			// TODO: suggest things to the user
			return cmdutil.UsageError(c, "You must specify one or more images, image streams, templates or source code locations to create an application.")
		}
		return err
	}

	if err := setLabels(c, result); err != nil {
		return err
	}
	if len(cmdutil.GetFlagString(c, "output")) != 0 {
		return f.Factory.PrintObject(c, result.List, out)
	}
	if err := createObjects(f, out, result); err != nil {
		return err
	}

	hasMissingRepo := false
	for _, item := range result.List.Items {
		switch t := item.(type) {
		case *kapi.Service:
			portMappings := "."
			if len(t.Spec.Ports) > 0 {
				portMappings = fmt.Sprintf(" with port mappings %s.", describeServicePorts(t.Spec))
			}
			fmt.Fprintf(c.Out(), "Service %q created at %s%s\n", t.Name, t.Spec.ClusterIP, portMappings)
		case *buildapi.BuildConfig:
			fmt.Fprintf(c.Out(), "A build was created - you can run `%s start-build %s` to start it.\n", fullName, t.Name)
		case *imageapi.ImageStream:
			if len(t.Status.DockerImageRepository) == 0 {
				if hasMissingRepo {
					continue
				}
				hasMissingRepo = true
				fmt.Fprintf(c.Out(), "WARNING: We created an ImageStream %q, but it does not look like a Docker registry has been integrated with the OpenShift server. Automatic builds and deployments depend on that integration to detect new images and will not function properly.\n", t.Name)
			}
		}
	}
	fmt.Fprintf(c.Out(), "Run '%s status' to view your app.\n", fullName)

	return nil
}

func validateArguments(cmd *cobra.Command, args []string) (deploymentKey, filename, image, oldName string, err error) {
	deploymentKey = cmdutil.GetFlagString(cmd, "deployment-label-key")
	filename = cmdutil.GetFlagString(cmd, "filename")
	image = cmdutil.GetFlagString(cmd, "image")

	if len(deploymentKey) == 0 {
		return "", "", "", "", cmdutil.UsageError(cmd, "--deployment-label-key can not be empty")
	}
	if len(filename) == 0 && len(image) == 0 {
		return "", "", "", "", cmdutil.UsageError(cmd, "Must specify --filename or --image for new controller")
	}
	if len(filename) != 0 && len(image) != 0 {
		return "", "", "", "", cmdutil.UsageError(cmd, "--filename and --image can not both be specified")
	}
	if len(args) < 1 {
		return "", "", "", "", cmdutil.UsageError(cmd, "Must specify the controller to update")
	}

	return deploymentKey, filename, image, args[0], nil
}

func RunResize(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []string) error {
	count := cmdutil.GetFlagInt(cmd, "replicas")
	if len(args) != 2 || count < 0 {
		return cmdutil.UsageError(cmd, "--replicas=COUNT RESOURCE ID")
	}

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

	mapper, typer := f.Object()
	r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		ContinueOnError().
		NamespaceParam(cmdNamespace).DefaultNamespace().
		ResourceTypeOrNameArgs(false, args...).
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}
	mapping, err := r.ResourceMapping()
	if err != nil {
		return err
	}

	infos, err := r.Infos()
	if err != nil {
		return err
	}
	info := infos[0]

	resizer, err := f.Resizer(mapping)
	if err != nil {
		return err
	}

	resourceVersion := cmdutil.GetFlagString(cmd, "resource-version")
	currentSize := cmdutil.GetFlagInt(cmd, "current-replicas")
	precondition := &kubectl.ResizePrecondition{currentSize, resourceVersion}
	cond := kubectl.ResizeCondition(resizer, precondition, info.Namespace, info.Name, uint(count))

	msg := "resized"
	if err = wait.Poll(retryFrequency, retryTimeout, cond); err != nil {
		msg = fmt.Sprintf("Failed to resize controller in spite of retrying for %s", retryTimeout)
		if err != nil {
			return err
		}
	}
	fmt.Fprintf(out, "%s\n", msg)
	return nil
}