Golang kubectl.NewHumanReadablePrinter函数代码示例

func ExamplePrintPodWithWideFormat() {
	f, tf, codec := NewAPIFactory()
	tf.Printer = kubectl.NewHumanReadablePrinter(false, false, true, []string{})
	tf.Client = &client.FakeRESTClient{
		Codec:  codec,
		Client: nil,
	}
	nodeName := "kubernetes-minion-abcd"
	cmd := NewCmdRun(f, os.Stdout)
	pod := &api.Pod{
		ObjectMeta: api.ObjectMeta{
			Name:              "test1",
			CreationTimestamp: util.Time{time.Now().AddDate(-10, 0, 0)},
		},
		Spec: api.PodSpec{
			Containers: make([]api.Container, 2),
			NodeName:   nodeName,
		},
		Status: api.PodStatus{
			Phase: "podPhase",
			ContainerStatuses: []api.ContainerStatus{
				{Ready: true, RestartCount: 3, State: api.ContainerState{Running: &api.ContainerStateRunning{}}},
				{RestartCount: 3},
			},
		},
	}
	err := f.PrintObject(cmd, pod, os.Stdout)
	if err != nil {
		fmt.Printf("Unexpected error: %v", err)
	}
	// Output:
	// NAME      READY     STATUS     RESTARTS   AGE       NODE
	// test1     1/2       podPhase   6          10y       kubernetes-minion-abcd
}

// NewFactory creates a factory with the default Kubernetes resources defined
func NewFactory() *Factory {
	mapper := kubectl.ShortcutExpander{latest.RESTMapper}

	flags := pflag.NewFlagSet("", pflag.ContinueOnError)
	clientConfig := DefaultClientConfig(flags)
	clients := &clientCache{
		clients: make(map[string]*client.Client),
		loader:  clientConfig,
	}

	return &Factory{
		clients: clients,
		flags:   flags,

		Mapper: mapper,
		Typer:  api.Scheme,

		Client: func(cmd *cobra.Command) (*client.Client, error) {
			return clients.ClientForVersion("")
		},
		ClientConfig: func(cmd *cobra.Command) (*client.Config, error) {
			return clients.ClientConfigForVersion("")
		},
		RESTClient: func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.RESTClient, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			return client.RESTClient, nil
		},
		Describer: func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.Describer, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			describer, ok := kubectl.DescriberFor(mapping.Kind, client)
			if !ok {
				return nil, fmt.Errorf("no description has been implemented for %q", mapping.Kind)
			}
			return describer, nil
		},
		Printer: func(cmd *cobra.Command, mapping *meta.RESTMapping, noHeaders bool) (kubectl.ResourcePrinter, error) {
			return kubectl.NewHumanReadablePrinter(noHeaders), nil
		},
		Validator: func(cmd *cobra.Command) (validation.Schema, error) {
			if GetFlagBool(cmd, "validate") {
				client, err := clients.ClientForVersion("")
				if err != nil {
					return nil, err
				}
				return &clientSwaggerSchema{client, api.Scheme}, nil
			}
			return validation.NullSchema{}, nil
		},
	}
}

// NewFactory creates a factory with the default Kubernetes resources defined
func NewFactory() *Factory {
	return &Factory{
		Mapper: latest.RESTMapper,
		Typer:  api.Scheme,
		Client: func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.RESTClient, error) {
			return getKubeClient(cmd), nil
		},
		Describer: func(cmd *cobra.Command, mapping *meta.RESTMapping) (kubectl.Describer, error) {
			describer, ok := kubectl.DescriberFor(mapping.Kind, getKubeClient(cmd))
			if !ok {
				return nil, fmt.Errorf("No description has been implemented for %q", mapping.Kind)
			}
			return describer, nil
		},
		Printer: func(cmd *cobra.Command, mapping *meta.RESTMapping, noHeaders bool) (kubectl.ResourcePrinter, error) {
			return kubectl.NewHumanReadablePrinter(noHeaders), nil
		},
	}
}

// NewCmdGet creates a command object for the generic "get" action, which
// retrieves one or more resources from a server.
func NewCmdGet(f *cmdutil.Factory, out io.Writer) *cobra.Command {
	p := kubectl.NewHumanReadablePrinter(false)
	validArgs := p.HandledResources()

	cmd := &cobra.Command{
		Use:     "get [(-o|--output=)json|yaml|template|...] (RESOURCE [NAME] | RESOURCE/NAME ...)",
		Short:   "Display one or many resources",
		Long:    get_long,
		Example: get_example,
		Run: func(cmd *cobra.Command, args []string) {
			err := RunGet(f, out, cmd, args)
			cmdutil.CheckErr(err)
		},
		ValidArgs: validArgs,
	}
	cmdutil.AddPrinterFlags(cmd)
	cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on")
	cmd.Flags().BoolP("watch", "w", false, "After listing/getting the requested object, watch for changes.")
	cmd.Flags().Bool("watch-only", false, "Watch for changes to the requested object(s), without listing/getting first.")
	return cmd
}

func ExamplePrintReplicationControllerWithNamespace() {
	f, tf, codec := NewAPIFactory()
	tf.Printer = kubectl.NewHumanReadablePrinter(false, true, false, []string{})
	tf.Client = &client.FakeRESTClient{
		Codec:  codec,
		Client: nil,
	}
	cmd := NewCmdRun(f, os.Stdout)
	ctrl := &api.ReplicationController{
		ObjectMeta: api.ObjectMeta{
			Name:      "foo",
			Namespace: "beep",
			Labels:    map[string]string{"foo": "bar"},
		},
		Spec: api.ReplicationControllerSpec{
			Replicas: 1,
			Selector: map[string]string{"foo": "bar"},
			Template: &api.PodTemplateSpec{
				ObjectMeta: api.ObjectMeta{
					Labels: map[string]string{"foo": "bar"},
				},
				Spec: api.PodSpec{
					Containers: []api.Container{
						{
							Name:  "foo",
							Image: "someimage",
						},
					},
				},
			},
		},
	}
	err := f.PrintObject(cmd, ctrl, os.Stdout)
	if err != nil {
		fmt.Printf("Unexpected error: %v", err)
	}
	// Output:
	// NAMESPACE   CONTROLLER   CONTAINER(S)   IMAGE(S)    SELECTOR   REPLICAS
	// beep        foo          foo            someimage   foo=bar    1
}

// NewCmdGet creates a command object for the generic "get" action, which
// retrieves one or more resources from a server.
func NewCmdGet(f *cmdutil.Factory, out io.Writer) *cobra.Command {
	p := kubectl.NewHumanReadablePrinter(false, false, false, []string{})
	validArgs := p.HandledResources()

	cmd := &cobra.Command{
		Use:     "get [(-o|--output=)json|yaml|template|wide|...] (RESOURCE [NAME] | RESOURCE/NAME ...)",
		Short:   "Display one or many resources",
		Long:    get_long,
		Example: get_example,
		Run: func(cmd *cobra.Command, args []string) {
			err := RunGet(f, out, cmd, args)
			cmdutil.CheckErr(err)
		},
		ValidArgs: validArgs,
	}
	cmdutil.AddPrinterFlags(cmd)
	cmd.Flags().StringP("selector", "l", "", "Selector (label query) to filter on")
	cmd.Flags().BoolP("watch", "w", false, "After listing/getting the requested object, watch for changes.")
	cmd.Flags().Bool("watch-only", false, "Watch for changes to the requested object(s), without listing/getting first.")
	cmd.Flags().Bool("all-namespaces", false, "If present, list the requested object(s) across all namespaces. Namespace in current context is ignored even if specified with --namespace.")
	kubectl.AddLabelsToColumnsFlag(cmd, &util.StringList{}, "Accepts a comma separated list of labels that are going to be presented as columns. Names are case-sensitive. You can also use multiple flag statements like -L label1 -L label2...")
	return cmd
}

// NewFactory creates a factory with the default Kubernetes resources defined
// if optionalClientConfig is nil, then flags will be bound to a new clientcmd.ClientConfig.
// if optionalClientConfig is not nil, then this factory will make use of it.
func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
	mapper := kubectl.ShortcutExpander{latest.RESTMapper}

	flags := pflag.NewFlagSet("", pflag.ContinueOnError)
	flags.SetNormalizeFunc(util.WarnWordSepNormalizeFunc) // Warn for "_" flags

	generators := map[string]kubectl.Generator{
		"run/v1":     kubectl.BasicReplicationController{},
		"service/v1": kubectl.ServiceGenerator{},
	}

	clientConfig := optionalClientConfig
	if optionalClientConfig == nil {
		clientConfig = DefaultClientConfig(flags)
	}

	clients := NewClientCache(clientConfig)

	return &Factory{
		clients:    clients,
		flags:      flags,
		generators: generators,

		Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
			cfg, err := clientConfig.ClientConfig()
			CheckErr(err)
			cmdApiVersion := cfg.Version

			return kubectl.OutputVersionMapper{mapper, cmdApiVersion}, api.Scheme
		},
		Client: func() (*client.Client, error) {
			return clients.ClientForVersion("")
		},
		ClientConfig: func() (*client.Config, error) {
			return clients.ClientConfigForVersion("")
		},
		RESTClient: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			return client.RESTClient, nil
		},
		Describer: func(mapping *meta.RESTMapping) (kubectl.Describer, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			describer, ok := kubectl.DescriberFor(mapping.Kind, client)
			if !ok {
				return nil, fmt.Errorf("no description has been implemented for %q", mapping.Kind)
			}
			return describer, nil
		},
		Printer: func(mapping *meta.RESTMapping, noHeaders, withNamespace bool, wide bool, columnLabels []string) (kubectl.ResourcePrinter, error) {
			return kubectl.NewHumanReadablePrinter(noHeaders, withNamespace, wide, columnLabels), nil
		},
		PodSelectorForObject: func(object runtime.Object) (string, error) {
			// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
			switch t := object.(type) {
			case *api.ReplicationController:
				return kubectl.MakeLabels(t.Spec.Selector), nil
			case *api.Pod:
				if len(t.Labels) == 0 {
					return "", fmt.Errorf("the pod has no labels and cannot be exposed")
				}
				return kubectl.MakeLabels(t.Labels), nil
			case *api.Service:
				if t.Spec.Selector == nil {
					return "", fmt.Errorf("the service has no pod selector set")
				}
				return kubectl.MakeLabels(t.Spec.Selector), nil
			default:
				kind, err := meta.NewAccessor().Kind(object)
				if err != nil {
					return "", err
				}
				return "", fmt.Errorf("it is not possible to get a pod selector from %s", kind)
			}
		},
		PortsForObject: func(object runtime.Object) ([]string, error) {
			// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
			switch t := object.(type) {
			case *api.ReplicationController:
				return getPorts(t.Spec.Template.Spec), nil
			case *api.Pod:
				return getPorts(t.Spec), nil
			default:
				kind, err := meta.NewAccessor().Kind(object)
				if err != nil {
					return nil, err
				}
				return nil, fmt.Errorf("it is not possible to get ports from %s", kind)
			}
		},
		LabelsForObject: func(object runtime.Object) (map[string]string, error) {
			return meta.NewAccessor().Labels(object)
//.........这里部分代码省略.........

func ExamplePrintServiceWithNamespacesAndLabels() {
	f, tf, codec := NewAPIFactory()
	tf.Printer = kubectl.NewHumanReadablePrinter(false, true, false, []string{"l1"})
	tf.Client = &client.FakeRESTClient{
		Codec:  codec,
		Client: nil,
	}
	cmd := NewCmdRun(f, os.Stdout)
	svc := &api.ServiceList{
		Items: []api.Service{
			{
				ObjectMeta: api.ObjectMeta{
					Name:      "svc1",
					Namespace: "ns1",
					Labels: map[string]string{
						"l1": "value",
					},
				},
				Spec: api.ServiceSpec{
					Ports: []api.ServicePort{
						{Protocol: "UDP", Port: 53},
						{Protocol: "TCP", Port: 53},
					},
					Selector: map[string]string{
						"s": "magic",
					},
					ClusterIP: "10.1.1.1",
				},
				Status: api.ServiceStatus{},
			},
			{
				ObjectMeta: api.ObjectMeta{
					Name:      "svc2",
					Namespace: "ns2",
					Labels: map[string]string{
						"l1": "dolla-bill-yall",
					},
				},
				Spec: api.ServiceSpec{
					Ports: []api.ServicePort{
						{Protocol: "TCP", Port: 80},
						{Protocol: "TCP", Port: 8080},
					},
					Selector: map[string]string{
						"s": "kazam",
					},
					ClusterIP: "10.1.1.2",
				},
				Status: api.ServiceStatus{},
			}},
	}
	ld := util.NewLineDelimiter(os.Stdout, "|")
	defer ld.Flush()
	err := f.PrintObject(cmd, svc, ld)
	if err != nil {
		fmt.Printf("Unexpected error: %v", err)
	}
	// Output:
	// |NAMESPACE   NAME      LABELS               SELECTOR   IP(S)      PORT(S)    L1|
	// |ns1         svc1      l1=value             s=magic    10.1.1.1   53/UDP     value|
	// |                                                                 53/TCP     |
	// |ns2         svc2      l1=dolla-bill-yall   s=kazam    10.1.1.2   80/TCP     dolla-bill-yall|
	// |                                                                 8080/TCP   |
	// ||
}

// NewHumanReadablePrinter returns a new HumanReadablePrinter
func NewHumanReadablePrinter(noHeaders, withNamespace, wide bool, columnLabels []string) *kctl.HumanReadablePrinter {
	// TODO: support cross namespace listing
	p := kctl.NewHumanReadablePrinter(noHeaders, withNamespace, wide, columnLabels)
	p.Handler(buildColumns, printBuild)
	p.Handler(buildColumns, printBuildList)
	p.Handler(buildConfigColumns, printBuildConfig)
	p.Handler(buildConfigColumns, printBuildConfigList)
	p.Handler(imageColumns, printImage)
	p.Handler(imageStreamTagColumns, printImageStreamTag)
	p.Handler(imageStreamImageColumns, printImageStreamImage)
	p.Handler(imageColumns, printImageList)
	p.Handler(imageStreamColumns, printImageStream)
	p.Handler(imageStreamColumns, printImageStreamList)
	p.Handler(projectColumns, printProject)
	p.Handler(projectColumns, printProjectList)
	p.Handler(routeColumns, printRoute)
	p.Handler(routeColumns, printRouteList)
	p.Handler(deploymentConfigColumns, printDeploymentConfig)
	p.Handler(deploymentConfigColumns, printDeploymentConfigList)
	p.Handler(templateColumns, printTemplate)
	p.Handler(templateColumns, printTemplateList)

	p.Handler(policyColumns, printPolicy)
	p.Handler(policyColumns, printPolicyList)
	p.Handler(policyBindingColumns, printPolicyBinding)
	p.Handler(policyBindingColumns, printPolicyBindingList)
	p.Handler(roleBindingColumns, printRoleBinding)
	p.Handler(roleBindingColumns, printRoleBindingList)
	p.Handler(roleColumns, printRole)
	p.Handler(roleColumns, printRoleList)

	p.Handler(policyColumns, printClusterPolicy)
	p.Handler(policyColumns, printClusterPolicyList)
	p.Handler(policyBindingColumns, printClusterPolicyBinding)
	p.Handler(policyBindingColumns, printClusterPolicyBindingList)
	p.Handler(roleColumns, printClusterRole)
	p.Handler(roleColumns, printClusterRoleList)
	p.Handler(roleBindingColumns, printClusterRoleBinding)
	p.Handler(roleBindingColumns, printClusterRoleBindingList)

	p.Handler(oauthClientColumns, printOAuthClient)
	p.Handler(oauthClientColumns, printOAuthClientList)
	p.Handler(oauthClientAuthorizationColumns, printOAuthClientAuthorization)
	p.Handler(oauthClientAuthorizationColumns, printOAuthClientAuthorizationList)
	p.Handler(oauthAccessTokenColumns, printOAuthAccessToken)
	p.Handler(oauthAccessTokenColumns, printOAuthAccessTokenList)
	p.Handler(oauthAuthorizeTokenColumns, printOAuthAuthorizeToken)
	p.Handler(oauthAuthorizeTokenColumns, printOAuthAuthorizeTokenList)

	p.Handler(userColumns, printUser)
	p.Handler(userColumns, printUserList)
	p.Handler(identityColumns, printIdentity)
	p.Handler(identityColumns, printIdentityList)
	p.Handler(userIdentityMappingColumns, printUserIdentityMapping)
	p.Handler(groupColumns, printGroup)
	p.Handler(groupColumns, printGroupList)

	p.Handler(IsPersonalSubjectAccessReviewColumns, printIsPersonalSubjectAccessReview)

	p.Handler(hostSubnetColumns, printHostSubnet)
	p.Handler(hostSubnetColumns, printHostSubnetList)
	p.Handler(clusterNetworkColumns, printClusterNetwork)
	p.Handler(clusterNetworkColumns, printClusterNetworkList)

	return p
}

// NewFactory creates a factory with the default Kubernetes resources defined
// if optionalClientConfig is nil, then flags will be bound to a new clientcmd.ClientConfig.
// if optionalClientConfig is not nil, then this factory will make use of it.
func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
	mapper := kubectl.ShortcutExpander{latest.RESTMapper}

	flags := pflag.NewFlagSet("", pflag.ContinueOnError)

	clientConfig := optionalClientConfig
	if optionalClientConfig == nil {
		clientConfig = DefaultClientConfig(flags)
	}

	clients := &clientCache{
		clients: make(map[string]*client.Client),
		loader:  clientConfig,
	}

	return &Factory{
		clients: clients,
		flags:   flags,

		Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
			cfg, err := clientConfig.ClientConfig()
			cmdutil.CheckErr(err)
			cmdApiVersion := cfg.Version

			return kubectl.OutputVersionMapper{mapper, cmdApiVersion}, api.Scheme
		},
		Client: func() (*client.Client, error) {
			return clients.ClientForVersion("")
		},
		ClientConfig: func() (*client.Config, error) {
			return clients.ClientConfigForVersion("")
		},
		RESTClient: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			return client.RESTClient, nil
		},
		Describer: func(mapping *meta.RESTMapping) (kubectl.Describer, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			describer, ok := kubectl.DescriberFor(mapping.Kind, client)
			if !ok {
				return nil, fmt.Errorf("no description has been implemented for %q", mapping.Kind)
			}
			return describer, nil
		},
		Printer: func(mapping *meta.RESTMapping, noHeaders bool) (kubectl.ResourcePrinter, error) {
			return kubectl.NewHumanReadablePrinter(noHeaders), nil
		},
		Resizer: func(mapping *meta.RESTMapping) (kubectl.Resizer, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			return kubectl.ResizerFor(mapping.Kind, client)
		},
		Reaper: func(mapping *meta.RESTMapping) (kubectl.Reaper, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			return kubectl.ReaperFor(mapping.Kind, client)
		},
		Validator: func() (validation.Schema, error) {
			if flags.Lookup("validate").Value.String() == "true" {
				client, err := clients.ClientForVersion("")
				if err != nil {
					return nil, err
				}
				return &clientSwaggerSchema{client, api.Scheme}, nil
			}
			return validation.NullSchema{}, nil
		},
		DefaultNamespace: func() (string, error) {
			return clientConfig.Namespace()
		},
	}
}

// NewFactory creates a factory with the default Kubernetes resources defined
// if optionalClientConfig is nil, then flags will be bound to a new clientcmd.ClientConfig.
// if optionalClientConfig is not nil, then this factory will make use of it.
func NewFactory(optionalClientConfig clientcmd.ClientConfig) *Factory {
	mapper := kubectl.ShortcutExpander{latest.RESTMapper}

	flags := pflag.NewFlagSet("", pflag.ContinueOnError)

	clientConfig := optionalClientConfig
	if optionalClientConfig == nil {
		clientConfig = DefaultClientConfig(flags)
	}

	clients := &clientCache{
		clients: make(map[string]*client.Client),
		loader:  clientConfig,
	}

	return &Factory{
		clients: clients,
		flags:   flags,

		Object: func() (meta.RESTMapper, runtime.ObjectTyper) {
			cfg, err := clientConfig.ClientConfig()
			CheckErr(err)
			cmdApiVersion := cfg.Version

			return kubectl.OutputVersionMapper{mapper, cmdApiVersion}, api.Scheme
		},
		Client: func() (*client.Client, error) {
			return clients.ClientForVersion("")
		},
		ClientConfig: func() (*client.Config, error) {
			return clients.ClientConfigForVersion("")
		},
		RESTClient: func(mapping *meta.RESTMapping) (resource.RESTClient, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			return client.RESTClient, nil
		},
		Describer: func(mapping *meta.RESTMapping) (kubectl.Describer, error) {
			client, err := clients.ClientForVersion(mapping.APIVersion)
			if err != nil {
				return nil, err
			}
			describer, ok := kubectl.DescriberFor(mapping.Kind, client)
			if !ok {
				return nil, fmt.Errorf("no description has been implemented for %q", mapping.Kind)
			}
			return describer, nil
		},
		Printer: func(mapping *meta.RESTMapping, noHeaders bool) (kubectl.ResourcePrinter, error) {
			return kubectl.NewHumanReadablePrinter(noHeaders), nil
		},
		PodSelectorForResource: func(mapping *meta.RESTMapping, namespace, name string) (string, error) {
			// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
			client, err := clients.ClientForVersion("")
			if err != nil {
				return "", err
			}
			switch mapping.Kind {
			case "ReplicationController":
				rc, err := client.ReplicationControllers(namespace).Get(name)
				if err != nil {
					return "", err
				}
				return kubectl.MakeLabels(rc.Spec.Selector), nil
			case "Pod":
				rc, err := client.Pods(namespace).Get(name)
				if err != nil {
					return "", err
				}
				if len(rc.Labels) == 0 {
					return "", fmt.Errorf("the pod has no labels and cannot be exposed")
				}
				return kubectl.MakeLabels(rc.Labels), nil
			case "Service":
				rc, err := client.ReplicationControllers(namespace).Get(name)
				if err != nil {
					return "", err
				}
				if rc.Spec.Selector == nil {
					return "", fmt.Errorf("the service has no pod selector set")
				}
				return kubectl.MakeLabels(rc.Spec.Selector), nil
			default:
				return "", fmt.Errorf("it is not possible to get a pod selector from %s", mapping.Kind)
			}
		},
		PortsForResource: func(mapping *meta.RESTMapping, namespace, name string) ([]string, error) {
			// TODO: replace with a swagger schema based approach (identify pod selector via schema introspection)
			client, err := clients.ClientForVersion("")
			if err != nil {
				return nil, err
			}
			switch mapping.Kind {
			case "ReplicationController":
				rc, err := client.ReplicationControllers(namespace).Get(name)
//.........这里部分代码省略.........