Golang kubectl.ResourcePrinter類代碼示例

func (o ViewOptions) Run(out io.Writer, printer kubectl.ResourcePrinter) error {
	config, err := o.loadConfig()
	if err != nil {
		return err
	}

	if o.Minify {
		if err := clientcmdapi.MinifyConfig(config); err != nil {
			return err
		}
	}

	if o.Flatten {
		if err := clientcmdapi.FlattenConfig(config); err != nil {
			return err
		}
	} else if !o.RawByteData {
		clientcmdapi.ShortenConfig(config)
	}

	err = printer.PrintObj(config, out)
	if err != nil {
		return err
	}

	return nil
}

func (l *ListPodsOptions) runListPods(node *kapi.Node, printer kubectl.ResourcePrinter) error {
	labelSelector, err := labels.Parse(l.Options.PodSelector)
	if err != nil {
		return err
	}
	fieldSelector := fields.Set{GetPodHostFieldLabel(node.TypeMeta.APIVersion): node.ObjectMeta.Name}.AsSelector()

	// Filter all pods that satisfies pod label selector and belongs to the given node
	pods, err := l.Options.Kclient.Pods(kapi.NamespaceAll).List(labelSelector, fieldSelector)
	if err != nil {
		return err
	}
	fmt.Fprintln(l.Options.Writer, "\nListing matched pods on node: ", node.ObjectMeta.Name, "\n")
	printer.PrintObj(pods, l.Options.Writer)

	return err
}

func (l *ListPodsOptions) RunListPods(node *kapi.Node) error {
	labelSelector, err := labels.Parse(l.Options.PodSelector)
	if err != nil {
		return err
	}
	fieldSelector := fields.Set{GetPodHostFieldLabel(node.TypeMeta.APIVersion): node.ObjectMeta.Name}.AsSelector()

	// Filter all pods that satisfies pod label selector and belongs to the given node
	pods, err := l.Options.Kclient.Pods(kapi.NamespaceAll).List(labelSelector, fieldSelector)
	if err != nil {
		return err
	}

	var printerWithHeaders, printerNoHeaders kubectl.ResourcePrinter
	if l.Options.CmdPrinterOutput {
		printerWithHeaders = l.Options.CmdPrinter
		printerNoHeaders = l.Options.CmdPrinter
	} else {
		printerWithHeaders, printerNoHeaders, err = l.Options.GetPrintersByResource("pod")
		if err != nil {
			return err
		}
	}
	firstPod := true

	for _, pod := range pods.Items {
		if firstPod {
			fmt.Fprintln(l.Options.Writer, "\nListing matched pods on node: ", node.ObjectMeta.Name, "\n")
			printerWithHeaders.PrintObj(&pod, l.Options.Writer)
			firstPod = false
		} else {
			printerNoHeaders.PrintObj(&pod, l.Options.Writer)
		}
	}
	return err
}

// RunEdit contains all the necessary functionality for the OpenShift cli edit command
func RunEdit(fullName string, f *clientcmd.Factory, out io.Writer, cmd *cobra.Command, args []string, filenames util.StringList) error {
	var printer kubectl.ResourcePrinter
	var ext string
	switch format := cmdutil.GetFlagString(cmd, "output"); format {
	case "json":
		printer = &kubectl.JSONPrinter{}
		ext = ".json"
	case "yaml":
		printer = &kubectl.YAMLPrinter{}
		ext = ".yaml"
	default:
		return cmdutil.UsageError(cmd, "The flag 'output' must be one of yaml|json")
	}

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

	mapper, typer := f.Object()
	rmap := &resource.Mapper{
		ObjectTyper:  typer,
		RESTMapper:   mapper,
		ClientMapper: f.ClientMapperForCommand(),
	}

	b := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
		NamespaceParam(cmdNamespace).DefaultNamespace().
		FilenameParam(filenames...).
		//SelectorParam(selector).
		ResourceTypeOrNameArgs(true, args...).
		Latest()
	if err != nil {
		return err
	}

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

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

	defaultVersion := cmdutil.OutputVersion(cmd, clientConfig.Version)
	results := editResults{}
	for {
		obj, err := resource.AsVersionedObject(infos, false, defaultVersion)
		if err != nil {
			return preservedFile(err, results.file, cmd.Out())
		}

		// TODO: add an annotating YAML printer that can print inline comments on each field,
		//   including descriptions or validation errors

		// generate the file to edit
		buf := &bytes.Buffer{}
		if err := results.header.WriteTo(buf); err != nil {
			return preservedFile(err, results.file, cmd.Out())
		}
		if err := printer.PrintObj(obj, buf); err != nil {
			return preservedFile(err, results.file, cmd.Out())
		}
		original := buf.Bytes()

		// launch the editor
		edit := editor.NewDefaultEditor()
		edited, file, err := edit.LaunchTempFile("oc-edit-", ext, buf)
		if err != nil {
			return preservedFile(err, results.file, cmd.Out())
		}

		// cleanup any file from the previous pass
		if len(results.file) > 0 {
			os.Remove(results.file)
		}

		glog.V(4).Infof("User edited:\n%s", string(edited))
		lines, err := hasLines(bytes.NewBuffer(edited))
		if err != nil {
			return preservedFile(err, file, cmd.Out())
		}
		if bytes.Equal(original, edited) {
			if len(results.edit) > 0 {
				preservedFile(nil, file, cmd.Out())
			} else {
				os.Remove(file)
			}
			fmt.Fprintln(cmd.Out(), "Edit cancelled, no changes made.")
			return nil
		}
		if !lines {
			if len(results.edit) > 0 {
				preservedFile(nil, file, cmd.Out())
			} else {
				os.Remove(file)
//.........這裏部分代碼省略.........