Golang Command.OutOrStderr方法代码示例

// Complete sets any default behavior for the command
func (o *NewAppOptions) Complete(commandName string, f *clientcmd.Factory, c *cobra.Command, args []string, out io.Writer) error {
	o.Out = out
	o.ErrOut = c.OutOrStderr()
	o.Output = kcmdutil.GetFlagString(c, "output")
	// Only output="" should print descriptions of intermediate steps. Everything
	// else should print only some specific output (json, yaml, go-template, ...)
	if len(o.Output) == 0 {
		o.Config.Out = o.Out
	} else {
		o.Config.Out = ioutil.Discard
	}
	o.Config.ErrOut = o.ErrOut

	o.Action.Out, o.Action.ErrOut = o.Out, o.ErrOut
	o.Action.Bulk.Mapper = clientcmd.ResourceMapper(f)
	o.Action.Bulk.Op = configcmd.Create
	// Retry is used to support previous versions of the API server that will
	// consider the presence of an unknown trigger type to be an error.
	o.Action.Bulk.Retry = retryBuildConfig

	o.Config.DryRun = o.Action.DryRun

	o.CommandPath = c.CommandPath()
	o.CommandName = commandName
	mapper, _ := f.Object(false)
	o.PrintObject = cmdutil.VersionedPrintObject(f.PrintObject, c, mapper, out)
	o.LogsForObject = f.LogsForObject
	if err := CompleteAppConfig(o.Config, f, c, args); err != nil {
		return err
	}
	if err := setAppConfigLabels(c, o.Config); err != nil {
		return err
	}
	return nil
}

// Complete completes any options that are required by validate or run steps.
func (opts *RegistryOptions) Complete(f *clientcmd.Factory, cmd *cobra.Command, out io.Writer, args []string) error {
	if len(args) > 0 {
		return kcmdutil.UsageError(cmd, "No arguments are allowed to this command")
	}

	opts.image = opts.Config.ImageTemplate.ExpandOrDie(opts.Config.Type)

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

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

	var portsErr error
	if opts.ports, portsErr = app.ContainerPortsFromString(opts.Config.Ports); portsErr != nil {
		return portsErr
	}

	var nsErr error
	if opts.namespace, _, nsErr = f.OpenShiftClientConfig.Namespace(); nsErr != nil {
		return fmt.Errorf("error getting namespace: %v", nsErr)
	}

	var kClientErr error
	if _, opts.serviceClient, kClientErr = f.Clients(); kClientErr != nil {
		return fmt.Errorf("error getting client: %v", kClientErr)
	}

	opts.Config.Action.Bulk.Mapper = clientcmd.ResourceMapper(f)
	opts.Config.Action.Out, opts.Config.Action.ErrOut = out, cmd.OutOrStderr()
	opts.Config.Action.Bulk.Op = configcmd.Create
	opts.out = out
	opts.cmd = cmd
	opts.factory = f

	return nil
}

func runInit(cmd *cobra.Command, args []string) {
	db, err := bolt.Open(database, 0600, nil)
	if err != nil {
		fmt.Fprintf(cmd.OutOrStderr(), "Could not create database: %v\n", err)
		os.Exit(-1)
	}
	if err := db.Update(func(tx *bolt.Tx) error {
		if _, err := tx.CreateBucketIfNotExists([]byte("feeds")); err != nil {
			return fmt.Errorf("could not create feeds bucket: %v", err)
		}
		return nil
	}); err != nil {
		fmt.Fprintf(cmd.OutOrStderr(), "Could not initialize database: %v\n", err)
		os.Exit(-1)
	}
}

func (options *NodeOptions) Run(c *cobra.Command, args []string) {
	kcmdutil.CheckErr(options.Complete())
	kcmdutil.CheckErr(options.Validate(args))

	startProfiler()

	if err := options.StartNode(); err != nil {
		if kerrors.IsInvalid(err) {
			if details := err.(*kerrors.StatusError).ErrStatus.Details; details != nil {
				fmt.Fprintf(c.OutOrStderr(), "Invalid %s %s\n", details.Kind, details.Name)
				for _, cause := range details.Causes {
					fmt.Fprintf(c.OutOrStderr(), "  %s: %s\n", cause.Field, cause.Message)
				}
				os.Exit(255)
			}
		}
		glog.Fatal(err)
	}
}

func runAdd(cmd *cobra.Command, args []string) {
	if feedName == "" {
		fail(cmd, "--name is required.")
	}
	if feedURL == "" {
		fail(cmd, "--url is required.")
	}

	db, err := bolt.Open(database, 0600, nil)
	if err != nil {
		fmt.Fprintf(cmd.OutOrStderr(), "Could not create database: %v\n", err)
		os.Exit(-1)
	}
	if err := db.Update(func(tx *bolt.Tx) error {
		b := tx.Bucket([]byte("feeds"))
		if b == nil {
			return fmt.Errorf("could not get feeds bucket (need to run `rss init`?)")
		}
		if b.Get([]byte(feedName)) != nil {
			return fmt.Errorf("feed %q already exists", feedName)
		}

		var buf bytes.Buffer
		feed := data.Feed{
			Name:      feedName,
			URL:       feedURL,
			DayOfWeek: dayOfWeek,
			Seconds:   seconds,
		}
		if err := gob.NewEncoder(&buf).Encode(feed); err != nil {
			return fmt.Errorf("error encoding feed configuration: %v", err)
		}
		if err := b.Put([]byte(feedName), buf.Bytes()); err != nil {
			return fmt.Errorf("error writing feed configuration: %v", err)
		}
		return nil
	}); err != nil {
		fmt.Fprintf(cmd.OutOrStderr(), "Could not add new feed: %v\n", err)
		os.Exit(-1)
	}
}

func (o *StartBuildOptions) Complete(f *clientcmd.Factory, in io.Reader, out io.Writer, cmd *cobra.Command, cmdFullName string, args []string) error {
	o.In = in
	o.Out = out
	o.ErrOut = cmd.OutOrStderr()
	o.Git = git.NewRepository()
	o.ClientConfig = f.OpenShiftClientConfig
	o.Mapper, _ = f.Object(false)

	webhook := o.FromWebhook
	buildName := o.FromBuild
	fromFile := o.FromFile
	fromDir := o.FromDir
	fromRepo := o.FromRepo
	buildLogLevel := o.LogLevel

	outputFormat := kcmdutil.GetFlagString(cmd, "output")
	if outputFormat != "name" && outputFormat != "" {
		return kcmdutil.UsageError(cmd, "Unsupported output format: %s", outputFormat)
	}
	o.ShortOutput = outputFormat == "name"

	switch {
	case len(webhook) > 0:
		if len(args) > 0 || len(buildName) > 0 || len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0 {
			return kcmdutil.UsageError(cmd, "The '--from-webhook' flag is incompatible with arguments and all '--from-*' flags")
		}
		return nil

	case len(args) != 1 && len(buildName) == 0:
		return kcmdutil.UsageError(cmd, "Must pass a name of a build config or specify build name with '--from-build' flag.\nUse \"%s get bc\" to list all available build configs.", cmdFullName)
	}

	if len(buildName) != 0 && (len(fromFile) != 0 || len(fromDir) != 0 || len(fromRepo) != 0) {
		// TODO: we should support this, it should be possible to clone a build to run again with new uploaded artifacts.
		// Doing so requires introducing a new clonebinary endpoint.
		return kcmdutil.UsageError(cmd, "Cannot use '--from-build' flag with binary builds")
	}
	o.AsBinary = len(fromFile) > 0 || len(fromDir) > 0 || len(fromRepo) > 0

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

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

	var (
		name     = buildName
		resource = buildapi.Resource("builds")
	)

	if len(name) == 0 && len(args) > 0 && len(args[0]) > 0 {
		mapper, _ := f.Object(false)
		resource, name, err = cmdutil.ResolveResource(buildapi.Resource("buildconfigs"), args[0], mapper)
		if err != nil {
			return err
		}
		switch resource {
		case buildapi.Resource("buildconfigs"):
			// no special handling required
		case buildapi.Resource("builds"):
			if len(o.ListWebhooks) == 0 {
				return fmt.Errorf("use --from-build to rerun your builds")
			}
		default:
			return fmt.Errorf("invalid resource provided: %v", resource)
		}
	}
	// when listing webhooks, allow --from-build to lookup a build config
	if resource == buildapi.Resource("builds") && len(o.ListWebhooks) > 0 {
		build, err := client.Builds(namespace).Get(name)
		if err != nil {
			return err
		}
		ref := build.Status.Config
		if ref == nil {
			return fmt.Errorf("the provided Build %q was not created from a BuildConfig and cannot have webhooks", name)
		}
		if len(ref.Namespace) > 0 {
			namespace = ref.Namespace
		}
		name = ref.Name
	}

	if len(name) == 0 {
		return fmt.Errorf("a resource name is required either as an argument or by using --from-build")
	}

	o.Namespace = namespace
	o.Name = name

	env, _, err := cmdutil.ParseEnv(o.Env, in)
	if err != nil {
		return err
	}
	if len(buildLogLevel) > 0 {
//.........这里部分代码省略.........

// Complete completes all the required options.
func (o *CancelBuildOptions) Complete(f *clientcmd.Factory, cmd *cobra.Command, args []string, in io.Reader, out io.Writer) error {
	o.In = in
	o.Out = out
	o.ErrOut = cmd.OutOrStderr()
	o.ReportError = func(err error) {
		o.HasError = true
		fmt.Fprintf(o.ErrOut, "error: %s\n", err.Error())
	}

	if len(args) == 0 {
		return kcmdutil.UsageError(cmd, "Must pass a name of a build or a buildconfig to cancel")
	}

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

	if len(o.States) == 0 {
		// If --state is not specified, set the default to "new", "pending" and
		// "running".
		o.States = []string{"new", "pending", "running"}
	} else {
		for _, state := range o.States {
			if len(state) > 0 && !isStateCancellable(state) {
				return kcmdutil.UsageError(cmd, "The '--state' flag has invalid value. Must be one of 'new', 'pending', or 'running'")
			}
		}
	}

	client, _, err := f.Clients()
	if err != nil {
		return err
	}
	o.Namespace = namespace
	o.Client = client
	o.BuildLister = buildclient.NewOSClientBuildClient(client)
	o.BuildClient = client.Builds(namespace)
	o.Mapper, _ = f.Object(false)

	for _, item := range args {
		resource, name, err := cmdutil.ResolveResource(buildapi.Resource("builds"), item, o.Mapper)
		if err != nil {
			return err
		}

		switch resource {
		case buildapi.Resource("buildconfigs"):
			list, err := buildutil.BuildConfigBuilds(o.BuildLister, o.Namespace, name, nil)
			if err != nil {
				return err
			}
			for _, b := range list.Items {
				o.BuildNames = append(o.BuildNames, b.Name)
			}
		case buildapi.Resource("builds"):
			o.BuildNames = append(o.BuildNames, strings.TrimSpace(name))
		default:
			return fmt.Errorf("invalid resource provided: %v", resource)
		}
	}

	return nil
}

// 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

	var defaultOutputErr error

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

	if len(cfg.Subdomain) > 0 && len(cfg.ForceSubdomain) > 0 {
		return kcmdutil.UsageError(cmd, "only one of --subdomain, --force-subdomain can be specified")
	}

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

	// HostNetwork overrides HostPorts
	if cfg.HostNetwork {
		cfg.HostPorts = false
	}

	// For the host networking case, ensure the ports match.
	if cfg.HostNetwork {
		for i := 0; i < len(ports); i++ {
			if 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: int32(cfg.StatsPort),
			Protocol:      kapi.ProtocolTCP,
		}
		if cfg.HostPorts {
			port.HostPort = int32(cfg.StatsPort)
		}
		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)
	}

	cfg.Action.Bulk.Mapper = clientcmd.ResourceMapper(f)
	cfg.Action.Out, cfg.Action.ErrOut = out, cmd.OutOrStderr()
	cfg.Action.Bulk.Op = configcmd.Create

	var clusterIP string

	output := cfg.Action.ShouldPrint()
	generate := output
	if !generate {
//.........这里部分代码省略.........

func fail(cmd *cobra.Command, msg string) {
	fmt.Fprintf(cmd.OutOrStderr(), "%s\n\n", msg)
	cmd.Usage()
	os.Exit(-1)
}

//.........这里部分代码省略.........
		return err
	}

	// only apply resource version locking on a single resource
	if !one && len(resourceVersion) > 0 {
		return kcmdutil.UsageError(cmd, "--resource-version may only be used with a single resource")
	}
	// Keep a copy of the original objects prior to updating their environment.
	// Used in constructing the patch(es) that will be applied in the server.
	gv := *clientConfig.GroupVersion
	oldObjects, err := resource.AsVersionedObjects(infos, gv, kapi.Codecs.LegacyCodec(gv))
	if err != nil {
		return err
	}
	if len(oldObjects) != len(infos) {
		return fmt.Errorf("could not convert all objects to API version %q", clientConfig.GroupVersion)
	}
	oldData := make([][]byte, len(infos))
	for i := range oldObjects {
		old, err := json.Marshal(oldObjects[i])
		if err != nil {
			return err
		}
		oldData[i] = old
	}

	skipped := 0
	errored := []*resource.Info{}
	for _, info := range infos {
		ok, err := f.UpdatePodSpecForObject(info.Object, func(spec *kapi.PodSpec) error {
			resolutionErrorsEncountered := false
			containers, _ := selectContainers(spec.Containers, containerMatch)
			if len(containers) == 0 {
				fmt.Fprintf(cmd.OutOrStderr(), "warning: %s/%s does not have any containers matching %q\n", info.Mapping.Resource, info.Name, containerMatch)
				return nil
			}
			for _, c := range containers {
				if !overwrite {
					if err := validateNoOverwrites(c.Env, env); err != nil {
						errored = append(errored, info)
						return err
					}
				}

				c.Env = updateEnv(c.Env, env, remove)

				if list {
					resolveErrors := map[string][]string{}
					store := newResourceStore()

					fmt.Fprintf(out, "# %s %s, container %s\n", info.Mapping.Resource, info.Name, c.Name)
					for _, env := range c.Env {
						// Print the simple value
						if env.ValueFrom == nil {
							fmt.Fprintf(out, "%s=%s\n", env.Name, env.Value)
							continue
						}

						// Print the reference version
						if !resolve {
							fmt.Fprintf(out, "# %s from %s\n", env.Name, getEnvVarRefString(env.ValueFrom))
							continue
						}

						value, err := getEnvVarRefValue(f, store, env.ValueFrom, info.Object, c)
						// Print the resolved value