Golang util.PrinterForCommand函数代码示例

func (n *NodeOptions) Complete(f *clientcmd.Factory, c *cobra.Command, args []string, out io.Writer) error {
	defaultNamespace, _, err := f.DefaultNamespace()
	if err != nil {
		return err
	}
	_, kc, err := f.Clients()
	if err != nil {
		return err
	}
	cmdPrinter, output, err := kcmdutil.PrinterForCommand(c)
	if err != nil {
		return err
	}
	mapper, typer := f.Object(false)

	n.DefaultNamespace = defaultNamespace
	n.Kclient = kc
	n.Writer = out
	n.Mapper = mapper
	n.Typer = typer
	n.RESTClientFactory = f.Factory.ClientForMapping
	n.Printer = f.Printer
	n.NodeNames = []string{}
	n.CmdPrinter = cmdPrinter
	n.CmdPrinterOutput = false

	if output {
		n.CmdPrinterOutput = true
	}
	if len(args) != 0 {
		n.NodeNames = append(n.NodeNames, args...)
	}
	return nil
}

func NewCmdConfigView(out io.Writer, ConfigAccess clientcmd.ConfigAccess) *cobra.Command {
	options := &ViewOptions{ConfigAccess: ConfigAccess}
	// Default to yaml
	defaultOutputFormat := "yaml"

	cmd := &cobra.Command{
		Use:     "view",
		Short:   "Displays merged kubeconfig settings or a specified kubeconfig file.",
		Long:    view_long,
		Example: view_example,
		Run: func(cmd *cobra.Command, args []string) {
			options.Complete()
			outputFormat := cmdutil.GetFlagString(cmd, "output")
			if outputFormat == "wide" {
				fmt.Printf("--output wide is not available in kubectl config view; reset to default output format (%s)\n\n", defaultOutputFormat)
				cmd.Flags().Set("output", defaultOutputFormat)
			}
			if outputFormat == "" {
				fmt.Printf("reset to default output format (%s) as --output is empty", defaultOutputFormat)
				cmd.Flags().Set("output", defaultOutputFormat)
			}

			printer, _, err := cmdutil.PrinterForCommand(cmd)
			cmdutil.CheckErr(err)
			version, err := cmdutil.OutputVersion(cmd, &latest.ExternalVersion)
			cmdutil.CheckErr(err)
			printer = kubectl.NewVersionedPrinter(printer, clientcmdapi.Scheme, version)

			cmdutil.CheckErr(options.Run(out, printer))
		},
	}

	cmdutil.AddPrinterFlags(cmd)
	cmd.Flags().Set("output", defaultOutputFormat)

	options.Merge.Default(true)
	f := cmd.Flags().VarPF(&options.Merge, "merge", "", "merge together the full hierarchy of kubeconfig files")
	f.NoOptDefVal = "true"
	cmd.Flags().BoolVar(&options.RawByteData, "raw", false, "display raw byte data")
	cmd.Flags().BoolVar(&options.Flatten, "flatten", false, "flatten the resulting kubeconfig file into self contained output (useful for creating portable kubeconfig files)")
	cmd.Flags().BoolVar(&options.Minify, "minify", false, "remove all information not used by current-context from the output")
	return cmd
}

//  Preview the configuration if required - returns true|false and errors.
func previewConfiguration(c *ipfailover.Configurator, cmd *cobra.Command, out io.Writer) (bool, error) {
	p, output, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return true, fmt.Errorf("Error configuring printer: %v", err)
	}

	// Check if we are outputting info.
	if !output {
		return false, nil
	}

	configList, err := c.Generate()
	if err != nil {
		return true, fmt.Errorf("Error generating config: %v", err)
	}

	if err := p.PrintObj(configList, out); err != nil {
		return true, fmt.Errorf("Unable to print object: %v", err)
	}

	return true, nil
}

func TestImageLocal(t *testing.T) {
	f, tf, _, ns := cmdtesting.NewAPIFactory()
	tf.Client = &fake.RESTClient{
		NegotiatedSerializer: ns,
		Client: fake.CreateHTTPClient(func(req *http.Request) (*http.Response, error) {
			t.Fatalf("unexpected request: %s %#v\n%#v", req.Method, req.URL, req)
			return nil, nil
		}),
	}
	tf.Namespace = "test"
	tf.ClientConfig = &restclient.Config{ContentConfig: restclient.ContentConfig{GroupVersion: &registered.GroupOrDie(api.GroupName).GroupVersion}}

	buf := bytes.NewBuffer([]byte{})
	cmd := NewCmdImage(f, buf, buf)
	cmd.SetOutput(buf)
	cmd.Flags().Set("output", "name")
	tf.Printer, _, _ = cmdutil.PrinterForCommand(cmd)

	opts := ImageOptions{FilenameOptions: resource.FilenameOptions{
		Filenames: []string{"../../../../examples/storage/cassandra/cassandra-controller.yaml"}},
		Out:   buf,
		Local: true}
	err := opts.Complete(f, cmd, []string{"cassandra=thingy"})
	if err == nil {
		err = opts.Validate()
	}
	if err == nil {
		err = opts.Run()
	}
	if err != nil {
		t.Fatalf("unexpected error: %v", err)
	}
	if !strings.Contains(buf.String(), "replicationcontroller/cassandra") {
		t.Errorf("did not set image: %s", buf.String())
	}
}

func NewCmdConfigView(out io.Writer, ConfigAccess ConfigAccess) *cobra.Command {
	options := &ViewOptions{ConfigAccess: ConfigAccess}

	cmd := &cobra.Command{
		Use:     "view",
		Short:   "displays Merged kubeconfig settings or a specified kubeconfig file.",
		Long:    view_long,
		Example: view_example,
		Run: func(cmd *cobra.Command, args []string) {
			options.Complete()

			printer, _, err := cmdutil.PrinterForCommand(cmd)
			if err != nil {
				glog.FatalDepth(1, err)
			}
			version := cmdutil.OutputVersion(cmd, latest.Version)
			printer = kubectl.NewVersionedPrinter(printer, clientcmdapi.Scheme, version)

			if err := options.Run(out, printer); err != nil {
				glog.FatalDepth(1, err)
			}

		},
	}

	cmdutil.AddPrinterFlags(cmd)
	// Default to yaml
	cmd.Flags().Set("output", "yaml")

	options.Merge.Default(true)
	cmd.Flags().Var(&options.Merge, "merge", "merge together the full hierarchy of kubeconfig files")
	cmd.Flags().BoolVar(&options.RawByteData, "raw", false, "display raw byte data")
	cmd.Flags().BoolVar(&options.Flatten, "flatten", false, "flatten the resulting kubeconfig file into self contained output (useful for creating portable kubeconfig files)")
	cmd.Flags().BoolVar(&options.Minify, "minify", false, "remove all information not used by current-context from the output")
	return cmd
}

// RunCmdRouter contains all the necessary functionality for the
// OpenShift CLI router command.
func RunCmdRouter(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, cfg *RouterConfig, args []string) error {
	var name string
	switch len(args) {
	case 0:
		name = "router"
	case 1:
		name = args[0]
	default:
		return cmdutil.UsageError(cmd, "You may pass zero or one arguments to provide a name for the router")
	}

	if len(cfg.StatsUsername) > 0 {
		if strings.Contains(cfg.StatsUsername, ":") {
			return cmdutil.UsageError(cmd, "username %s must not contain ':'", cfg.StatsUsername)
		}
	}

	ports, err := app.ContainerPortsFromString(cfg.Ports)
	if err != nil {
		glog.Fatal(err)
	}

	// For the host networking case, ensure the ports match.
	if cfg.HostNetwork {
		for i := 0; i < len(ports); i++ {
			if ports[i].ContainerPort != ports[i].HostPort {
				return cmdutil.UsageError(cmd, "For host networking mode, please ensure that the container [%v] and host [%v] ports match", ports[i].ContainerPort, ports[i].HostPort)
			}
		}
	}

	if cfg.StatsPort > 0 {
		ports = append(ports, kapi.ContainerPort{
			Name:          "stats",
			HostPort:      cfg.StatsPort,
			ContainerPort: cfg.StatsPort,
			Protocol:      kapi.ProtocolTCP,
		})
	}

	label := map[string]string{"router": name}
	if cfg.Labels != defaultLabel {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Labels, ","))
		if err != nil {
			glog.Fatal(err)
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in %q", cfg.Labels)
		}
		label = valid
	}

	nodeSelector := map[string]string{}
	if len(cfg.Selector) > 0 {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Selector, ","))
		if err != nil {
			glog.Fatal(err)
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in selector %q", cfg.Selector)
		}
		nodeSelector = valid
	}

	image := cfg.ImageTemplate.ExpandOrDie(cfg.Type)

	namespace, _, err := f.OpenShiftClientConfig.Namespace()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}
	_, kClient, err := f.Clients()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}

	_, output, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return fmt.Errorf("unable to configure printer: %v", err)
	}

	generate := output
	if !generate {
		_, err = kClient.Services(namespace).Get(name)
		if err != nil {
			if !errors.IsNotFound(err) {
				return fmt.Errorf("can't check for existing router %q: %v", name, err)
			}
			generate = true
		}
	}

	if generate {
		if cfg.DryRun && !output {
			return fmt.Errorf("router %q does not exist (no service)", name)
		}

		if len(cfg.ServiceAccount) == 0 {
			return fmt.Errorf("router could not be created; you must specify a service account with --service-account")
//.........这里部分代码省略.........

// 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, options *GetOptions) error {
	selector := cmdutil.GetFlagString(cmd, "selector")
	allNamespaces := cmdutil.GetFlagBool(cmd, "all-namespaces")
	mapper, typer := f.Object()

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

	if len(args) == 0 && len(options.Filenames) == 0 {
		fmt.Fprint(out, "You must specify the type of resource to get. ", valid_resources)
		return cmdutil.UsageError(cmd, "Required resource not specified.")
	}

	// always show resources when getting by name or filename
	argsHasNames, err := resource.HasNames(args)
	if err != nil {
		return err
	}
	if len(options.Filenames) > 0 || argsHasNames {
		cmd.Flag("show-all").Value.Set("true")
	}
	export := cmdutil.GetFlagBool(cmd, "export")

	// 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, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
			NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
			FilenameParam(enforceNamespace, options.Filenames...).
			SelectorParam(selector).
			ExportParam(export).
			ResourceTypeOrNameArgs(true, args...).
			SingleResourceType().
			Latest().
			Do()
		err := r.Err()
		if err != nil {
			return err
		}
		infos, err := r.Infos()
		if err != nil {
			return err
		}
		if len(infos) != 1 {
			return fmt.Errorf("watch is only supported on individual resources and resource collections - %d resources were found", len(infos))
		}
		info := infos[0]
		mapping := info.ResourceMapping()
		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, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
		NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
		FilenameParam(enforceNamespace, options.Filenames...).
		SelectorParam(selector).
		ExportParam(export).
		ResourceTypeOrNameArgs(true, args...).
		ContinueOnError().
		Latest()
	printer, generic, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return err
	}

	if generic {
		clientConfig, err := f.ClientConfig()
//.........这里部分代码省略.........

//.........这里部分代码省略.........
			builds, err := oc.Builds(t.Namespace).List(api.ListOptions{})
			if err != nil {
				return nil, err
			}
			builds.Items = buildapi.FilterBuilds(builds.Items, buildapi.ByBuildConfigPredicate(t.Name))
			if len(builds.Items) == 0 {
				return nil, fmt.Errorf("no builds found for %q", t.Name)
			}
			if bopts.Version != nil {
				// If a version has been specified, try to get the logs from that build.
				desired := buildutil.BuildNameForConfigVersion(t.Name, int(*bopts.Version))
				return oc.BuildLogs(t.Namespace).Get(desired, *bopts), nil
			}
			sort.Sort(sort.Reverse(buildapi.BuildSliceByCreationTimestamp(builds.Items)))
			return oc.BuildLogs(t.Namespace).Get(builds.Items[0].Name, *bopts), nil
		default:
			return kLogsForObjectFunc(object, options)
		}
	}
	// Saves current resource name (or alias if any) in PrintOptions. Once saved, it will not be overwritten by the
	// kubernetes resource alias look-up, as it will notice a non-empty value in `options.Kind`
	w.Printer = func(mapping *meta.RESTMapping, options kubectl.PrintOptions) (kubectl.ResourcePrinter, error) {
		if mapping != nil {
			options.Kind = mapping.Resource
			if alias, ok := resourceShortFormFor(mapping.Resource); ok {
				options.Kind = alias
			}
		}
		return describe.NewHumanReadablePrinter(options), nil
	}
	// PrintResourceInfos receives a list of resource infos and prints versioned objects if a generic output format was specified
	// otherwise, it iterates through info objects, printing each resource with a unique printer for its mapping
	w.PrintResourceInfos = func(cmd *cobra.Command, infos []*resource.Info, out io.Writer) error {
		printer, generic, err := cmdutil.PrinterForCommand(cmd)
		if err != nil {
			return nil
		}
		if !generic {
			for _, info := range infos {
				mapping := info.ResourceMapping()
				printer, err := w.PrinterForMapping(cmd, mapping, false)
				if err != nil {
					return err
				}
				if err := printer.PrintObj(info.Object, out); err != nil {
					return nil
				}
			}
			return nil
		}

		clientConfig, err := w.ClientConfig()
		if err != nil {
			return err
		}
		outputVersion, err := cmdutil.OutputVersion(cmd, clientConfig.GroupVersion)
		if err != nil {
			return err
		}
		object, err := resource.AsVersionedObject(infos, len(infos) != 1, outputVersion, api.Codecs.LegacyCodec(outputVersion))
		if err != nil {
			return err
		}
		return printer.PrintObj(object, out)

	}

// RunCmdRegistry contains all the necessary functionality for the OpenShift cli registry command
func RunCmdRegistry(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, cfg *RegistryConfig, args []string) error {
	var name string
	switch len(args) {
	case 0:
		name = "docker-registry"
	default:
		return cmdutil.UsageError(cmd, "No arguments are allowed to this command")
	}

	ports, err := app.ContainerPortsFromString(cfg.Ports)
	if err != nil {
		return err
	}

	label := map[string]string{
		"docker-registry": "default",
	}
	if cfg.Labels != defaultLabel {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Labels, ","))
		if err != nil {
			return err
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in %q", cfg.Labels)
		}
		label = valid
	}

	nodeSelector := map[string]string{}
	if len(cfg.Selector) > 0 {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Selector, ","))
		if err != nil {
			return err
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in selector %q", cfg.Selector)
		}
		nodeSelector = valid
	}

	image := cfg.ImageTemplate.ExpandOrDie(cfg.Type)

	namespace, _, err := f.OpenShiftClientConfig.Namespace()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}
	_, kClient, err := f.Clients()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}

	_, output, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return fmt.Errorf("unable to configure printer: %v", err)
	}

	generate := output
	if !generate {
		_, err = kClient.Services(namespace).Get(name)
		if err != nil {
			if !errors.IsNotFound(err) {
				return fmt.Errorf("can't check for existing docker-registry %q: %v", name, err)
			}
			generate = true
		}
	}

	if generate {
		if cfg.DryRun && !output {
			return fmt.Errorf("docker-registry %q does not exist (no service).", name)
		}

		// create new registry
		if len(cfg.Credentials) == 0 {
			return fmt.Errorf("registry does not exist; you must specify a .kubeconfig file path containing credentials for connecting the registry to the master with --credentials")
		}
		clientConfigLoadingRules := &kclientcmd.ClientConfigLoadingRules{ExplicitPath: cfg.Credentials}
		credentials, err := clientConfigLoadingRules.Load()
		if err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not be loaded: %v", cfg.Credentials, err)
		}
		config, err := kclientcmd.NewDefaultClientConfig(*credentials, &kclientcmd.ConfigOverrides{}).ClientConfig()
		if err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not be used: %v", cfg.Credentials, err)
		}
		if err := kclient.LoadTLSFiles(config); err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not load certificate info: %v", cfg.Credentials, err)
		}
		insecure := "false"
		if config.Insecure {
			insecure = "true"
		} else {
			if len(config.KeyData) == 0 || len(config.CertData) == 0 {
				return fmt.Errorf("registry does not exist; the provided credentials %q are missing the client certificate and/or key", cfg.Credentials)
			}
		}

		env := app.Environment{
			"OPENSHIFT_MASTER":    config.Host,
//.........这里部分代码省略.........

// RunCmdRegistry contains all the necessary functionality for the OpenShift cli registry command
func RunCmdRegistry(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, cfg *RegistryConfig, args []string) error {
	var name string
	switch len(args) {
	case 0:
		name = "docker-registry"
	default:
		return cmdutil.UsageError(cmd, "No arguments are allowed to this command")
	}

	ports, err := app.ContainerPortsFromString(cfg.Ports)
	if err != nil {
		return err
	}

	label := map[string]string{
		"docker-registry": "default",
	}
	if cfg.Labels != defaultLabel {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Labels, ","))
		if err != nil {
			return err
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in %q", cfg.Labels)
		}
		label = valid
	}

	nodeSelector := map[string]string{}
	if len(cfg.Selector) > 0 {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Selector, ","))
		if err != nil {
			return err
		}
		if len(remove) > 0 {
			return cmdutil.UsageError(cmd, "You may not pass negative labels in selector %q", cfg.Selector)
		}
		nodeSelector = valid
	}

	image := cfg.ImageTemplate.ExpandOrDie(cfg.Type)

	namespace, _, err := f.OpenShiftClientConfig.Namespace()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}
	_, kClient, err := f.Clients()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}

	_, output, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return fmt.Errorf("unable to configure printer: %v", err)
	}

	generate := output
	if !generate {
		_, err = kClient.Services(namespace).Get(name)
		if err != nil {
			if !errors.IsNotFound(err) {
				return fmt.Errorf("can't check for existing docker-registry %q: %v", name, err)
			}
			generate = true
		}
	}

	if generate {
		if cfg.DryRun && !output {
			return fmt.Errorf("docker-registry %q does not exist (no service).", name)
		}

		// create new registry
		if len(cfg.Credentials) == 0 {
			return fmt.Errorf("registry does not exist; you must specify a .kubeconfig file path containing credentials for connecting the registry to the master with --credentials")
		}
		clientConfigLoadingRules := &kclientcmd.ClientConfigLoadingRules{ExplicitPath: cfg.Credentials}
		credentials, err := clientConfigLoadingRules.Load()
		if err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not be loaded: %v", cfg.Credentials, err)
		}
		config, err := kclientcmd.NewDefaultClientConfig(*credentials, &kclientcmd.ConfigOverrides{}).ClientConfig()
		if err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not be used: %v", cfg.Credentials, err)
		}
		if err := kclient.LoadTLSFiles(config); err != nil {
			return fmt.Errorf("registry does not exist; the provided credentials %q could not load certificate info: %v", cfg.Credentials, err)
		}
		insecure := "false"
		if config.Insecure {
			insecure = "true"
		} else {
			if len(config.KeyData) == 0 || len(config.CertData) == 0 {
				return fmt.Errorf("registry does not exist; the provided credentials %q are missing the client certificate and/or key", cfg.Credentials)
			}
		}

		env := app.Environment{
			"OPENSHIFT_MASTER":    config.Host,
//.........这里部分代码省略.........

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

	filenames := cmdutil.GetFlagStringSlice(cmd, "filename")

	if len(args) == 0 && len(filenames) == 0 {
		fmt.Fprint(out, "You must specify the type of resource to get. ", valid_resources, `   * componentstatuses (aka 'cs')
   * endpoints (aka 'ep')
`)
		return cmdutil.UsageError(cmd, "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).
			FilenameParam(enforceNamespace, filenames...).
			SelectorParam(selector).
			ResourceTypeOrNameArgs(true, args...).
			SingleResourceType().
			Latest().
			Do()
		if err != nil {
			return err
		}
		infos, err := r.Infos()
		if err != nil {
			return err
		}
		if len(infos) != 1 {
			return fmt.Errorf("watch is only supported on a single resource - %d resources were found", len(infos))
		}
		info := infos[0]
		mapping := info.ResourceMapping()
		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).
		FilenameParam(enforceNamespace, filenames...).
		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 {
//.........这里部分代码省略.........

//.........这里部分代码省略.........
				if !isList && first {
					// drop the initial watch event in the single resource case
					first = false
					return false, nil
				}
				err := printer.PrintObj(e.Object, out)
				if err != nil {
					return false, err
				}
				filteredResourceCount++
				cmdutil.PrintFilterCount(filteredResourceCount, mapping.Resource, filterOpts)
				return false, nil
			})
			return err
		})
		return nil
	}

	r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.UnstructuredClientForMapping), runtime.UnstructuredJSONScheme).
		NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
		FilenameParam(enforceNamespace, &options.FilenameOptions).
		SelectorParam(selector).
		ExportParam(export).
		ResourceTypeOrNameArgs(true, args...).
		ContinueOnError().
		Latest().
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}

	printer, generic, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return err
	}

	if generic {
		// we flattened the data from the builder, so we have individual items, but now we'd like to either:
		// 1. if there is more than one item, combine them all into a single list
		// 2. if there is a single item and that item is a list, leave it as its specific list
		// 3. if there is a single item and it is not a a list, leave it as a single item
		var errs []error
		singular := false
		infos, err := r.IntoSingular(&singular).Infos()
		if err != nil {
			if singular {
				return err
			}
			errs = append(errs, err)
		}
		if len(infos) == 0 && len(errs) == 0 {
			outputEmptyListWarning(errOut)
		}

		res := ""
		if len(infos) > 0 {
			res = infos[0].ResourceMapping().Resource
		}

		var obj runtime.Object
		if singular {
			obj = infos[0].Object
		} else {
			// we have more than one item, so coerce all items into a list

//.........这里部分代码省略.........
		}

		first := true
		kubectl.WatchLoop(w, func(e watch.Event) error {
			if !isList && first {
				// drop the initial watch event in the single resource case
				first = false
				return nil
			}
			err := printer.PrintObj(e.Object, out)
			if err == nil {
				printer.AfterPrint(errOut, mapping.Resource)
			}
			return err
		})
		return nil
	}

	r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
		NamespaceParam(cmdNamespace).DefaultNamespace().AllNamespaces(allNamespaces).
		FilenameParam(enforceNamespace, &options.FilenameOptions).
		SelectorParam(selector).
		ExportParam(export).
		ResourceTypeOrNameArgs(true, args...).
		ContinueOnError().
		Latest().
		Flatten().
		Do()
	err = r.Err()
	if err != nil {
		return err
	}

	printer, generic, err := cmdutil.PrinterForCommand(cmd)
	if err != nil {
		return err
	}

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

		allErrs := []error{}
		singular := false
		infos, err := r.IntoSingular(&singular).Infos()
		if err != nil {
			if singular {
				return err
			}
			allErrs = append(allErrs, err)
		}

		// the outermost object will be converted to the output-version, but inner
		// objects can use their mappings
		version, err := cmdutil.OutputVersion(cmd, clientConfig.GroupVersion)
		if err != nil {
			return err
		}
		res := ""
		if len(infos) > 0 {
			res = infos[0].ResourceMapping().Resource
		}

		obj, err := resource.AsVersionedObject(infos, !singular, version, f.JSONEncoder())

//.........这里部分代码省略.........
	} else {
		infos, err = resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), kapi.Codecs.UniversalDecoder()).
			NamespaceParam(namespace).RequireNamespace().
			FilenameParam(explicit, false, filename).
			Do().
			Infos()
		if err != nil {
			return err
		}
	}

	if len(infos) > 1 {
		// in order to run validation on the input given to us by a user, we only support the processing
		// of one template in a list. For instance, we want to be able to fail when a user does not give
		// a parameter that the template wants or when they give a parameter the template doesn't need,
		// as this may indicate that they have mis-used `oc process`. This is much less complicated when
		// we process at most one template.
		fmt.Fprintf(out, "%d input templates found, but only the first will be processed", len(infos))
	}

	obj, ok := infos[0].Object.(*templateapi.Template)
	if !ok {
		sourceName := filename
		if len(templateName) > 0 {
			sourceName = namespace + "/" + templateName
		}
		return fmt.Errorf("unable to parse %q, not a valid Template but %s\n", sourceName, reflect.TypeOf(infos[0].Object))
	}

	// If 'parameters' flag is set it does not do processing but only print
	// the template parameters to console for inspection.
	if kcmdutil.GetFlagBool(cmd, "parameters") {
		return describe.PrintTemplateParameters(obj.Parameters, out)
	}

	if label := kcmdutil.GetFlagString(cmd, "labels"); len(label) > 0 {
		lbl, err := kubectl.ParseLabels(label)
		if err != nil {
			return fmt.Errorf("error parsing labels: %v\n", err)
		}
		if obj.ObjectLabels == nil {
			obj.ObjectLabels = make(map[string]string)
		}
		for key, value := range lbl {
			obj.ObjectLabels[key] = value
		}
	}

	// Raise parameter parsing errors here after we had chance to return UsageErrors first
	if paramErr != nil {
		return paramErr
	}
	if errs := injectUserVars(params, obj); errs != nil {
		return kerrors.NewAggregate(errs)
	}

	resultObj, err := client.TemplateConfigs(namespace).Create(obj)
	if err != nil {
		return fmt.Errorf("error processing the template %q: %v\n", obj.Name, err)
	}

	outputFormat := kcmdutil.GetFlagString(cmd, "output")
	if outputFormat == "describe" {
		if s, err := (&describe.TemplateDescriber{
			MetadataAccessor: meta.NewAccessor(),
			ObjectTyper:      kapi.Scheme,
			ObjectDescriber:  nil,
		}).DescribeTemplate(resultObj); err != nil {
			return fmt.Errorf("error describing %q: %v\n", obj.Name, err)
		} else {
			_, err := fmt.Fprintf(out, s)
			return err
		}
	}
	objects = append(objects, resultObj.Objects...)

	p, _, err := kcmdutil.PrinterForCommand(cmd)
	if err != nil {
		return err
	}
	gv := mapping.GroupVersionKind.GroupVersion()
	version, err := kcmdutil.OutputVersion(cmd, &gv)
	if err != nil {
		return err
	}
	p = kubectl.NewVersionedPrinter(p, kapi.Scheme, version)

	// use generic output
	if kcmdutil.GetFlagBool(cmd, "raw") {
		for i := range objects {
			p.PrintObj(objects[i], out)
		}
		return nil
	}

	return p.PrintObj(&kapi.List{
		ListMeta: unversioned.ListMeta{},
		Items:    objects,
	}, out)
}

// RunCmdRouter contains all the necessary functionality for the
// OpenShift CLI router command.
func RunCmdRouter(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, cfg *RouterConfig, args []string) error {
	switch len(args) {
	case 0:
		// uses default value
	case 1:
		cfg.Name = args[0]
	default:
		return kcmdutil.UsageError(cmd, "You may pass zero or one arguments to provide a name for the router")
	}
	name := cfg.Name

	if len(cfg.StatsUsername) > 0 {
		if strings.Contains(cfg.StatsUsername, ":") {
			return kcmdutil.UsageError(cmd, "username %s must not contain ':'", cfg.StatsUsername)
		}
	}

	ports, err := app.ContainerPortsFromString(cfg.Ports)
	if err != nil {
		return fmt.Errorf("unable to parse --ports: %v", err)
	}

	// For the host networking case, ensure the ports match. Otherwise, remove host ports
	for i := 0; i < len(ports); i++ {
		if cfg.HostNetwork && ports[i].HostPort != 0 && ports[i].ContainerPort != ports[i].HostPort {
			return fmt.Errorf("when using host networking mode, container port %d and host port %d must be equal", ports[i].ContainerPort, ports[i].HostPort)
		}
	}

	if cfg.StatsPort > 0 {
		port := kapi.ContainerPort{
			Name:          "stats",
			ContainerPort: cfg.StatsPort,
			Protocol:      kapi.ProtocolTCP,
		}
		ports = append(ports, port)
	}

	label := map[string]string{"router": name}
	if cfg.Labels != defaultLabel {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Labels, ","))
		if err != nil {
			glog.Fatal(err)
		}
		if len(remove) > 0 {
			return kcmdutil.UsageError(cmd, "You may not pass negative labels in %q", cfg.Labels)
		}
		label = valid
	}

	nodeSelector := map[string]string{}
	if len(cfg.Selector) > 0 {
		valid, remove, err := app.LabelsFromSpec(strings.Split(cfg.Selector, ","))
		if err != nil {
			glog.Fatal(err)
		}
		if len(remove) > 0 {
			return kcmdutil.UsageError(cmd, "You may not pass negative labels in selector %q", cfg.Selector)
		}
		nodeSelector = valid
	}

	image := cfg.ImageTemplate.ExpandOrDie(cfg.Type)

	namespace, _, err := f.OpenShiftClientConfig.Namespace()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}
	_, kClient, err := f.Clients()
	if err != nil {
		return fmt.Errorf("error getting client: %v", err)
	}

	_, output, err := kcmdutil.PrinterForCommand(cmd)
	if err != nil {
		return fmt.Errorf("unable to configure printer: %v", err)
	}

	generate := output
	if !generate {
		_, err = kClient.Services(namespace).Get(name)
		if err != nil {
			if !errors.IsNotFound(err) {
				return fmt.Errorf("can't check for existing router %q: %v", name, err)
			}
			generate = true
		}
	}
	if !generate {
		fmt.Fprintf(out, "Router %q service exists\n", name)
		return nil
	}

	if cfg.DryRun && !output {
		return fmt.Errorf("router %q does not exist (no service)", name)
	}

	if len(cfg.ServiceAccount) == 0 {
//.........这里部分代码省略.........