Golang DockerCli.Err方法代码示例

func inspectAll(ctx context.Context, dockerCli *client.DockerCli, getSize bool) inspect.GetRefFunc {
	client := dockerCli.Client()

	return func(ref string) (interface{}, []byte, error) {
		c, rawContainer, err := client.ContainerInspectWithRaw(ctx, ref, getSize)
		if err == nil || !apiclient.IsErrNotFound(err) {
			return c, rawContainer, err
		}
		// Search for image with that id if a container doesn't exist.
		i, rawImage, err := client.ImageInspectWithRaw(ctx, ref)
		if err == nil || !apiclient.IsErrNotFound(err) {
			return i, rawImage, err
		}

		// Search for task with that id if an image doesn't exist.
		t, rawTask, err := client.TaskInspectWithRaw(ctx, ref)
		if err == nil || !(apiclient.IsErrNotFound(err) || isErrorNoSwarmMode(err)) {
			if getSize {
				fmt.Fprintln(dockerCli.Err(), "WARNING: --size ignored for tasks")
			}
			return t, rawTask, err
		}
		return nil, nil, fmt.Errorf("Error: No such container, image or task: %s", ref)
	}
}

// ForwardAllSignals forwards signals to the container
func ForwardAllSignals(ctx context.Context, cli *client.DockerCli, cid string) chan os.Signal {
	sigc := make(chan os.Signal, 128)
	signal.CatchAll(sigc)
	go func() {
		for s := range sigc {
			if s == signal.SIGCHLD || s == signal.SIGPIPE {
				continue
			}
			var sig string
			for sigStr, sigN := range signal.SignalMap {
				if sigN == s {
					sig = sigStr
					break
				}
			}
			if sig == "" {
				fmt.Fprintf(cli.Err(), "Unsupported signal: %v. Discarding.\n", s)
				continue
			}

			if err := cli.Client().ContainerKill(ctx, cid, sig); err != nil {
				logrus.Debugf("Error sending signal: %s", err)
			}
		}
	}()
	return sigc
}

func runLogs(dockerCli *client.DockerCli, opts *logsOptions) error {
	ctx := context.Background()

	c, err := dockerCli.Client().ContainerInspect(ctx, opts.container)
	if err != nil {
		return err
	}

	if !validDrivers[c.HostConfig.LogConfig.Type] {
		return fmt.Errorf("\"logs\" command is supported only for \"json-file\" and \"journald\" logging drivers (got: %s)", c.HostConfig.LogConfig.Type)
	}

	options := types.ContainerLogsOptions{
		ShowStdout: true,
		ShowStderr: true,
		Since:      opts.since,
		Timestamps: opts.timestamps,
		Follow:     opts.follow,
		Tail:       opts.tail,
		Details:    opts.details,
	}
	responseBody, err := dockerCli.Client().ContainerLogs(ctx, opts.container, options)
	if err != nil {
		return err
	}
	defer responseBody.Close()

	if c.Config.Tty {
		_, err = io.Copy(dockerCli.Out(), responseBody)
	} else {
		_, err = stdcopy.StdCopy(dockerCli.Out(), dockerCli.Err(), responseBody)
	}
	return err
}

func runConfig(dockerCli *client.DockerCli, opts configOptions) error {
	bundle, err := loadBundlefile(dockerCli.Err(), opts.namespace, opts.bundlefile)
	if err != nil {
		return err
	}
	return bundlefile.Print(dockerCli.Out(), bundle)
}

func runInspect(dockerCli *client.DockerCli, opts inspectOptions) error {
	ctx := context.Background()
	client := dockerCli.Client()

	var getRefFunc inspect.GetRefFunc
	switch opts.inspectType {
	case "container":
		getRefFunc = func(ref string) (interface{}, []byte, error) {
			return client.ContainerInspectWithRaw(ctx, ref, opts.size)
		}
	case "image":
		getRefFunc = func(ref string) (interface{}, []byte, error) {
			return client.ImageInspectWithRaw(ctx, ref)
		}
	case "task":
		if opts.size {
			fmt.Fprintln(dockerCli.Err(), "WARNING: --size ignored for tasks")
		}
		getRefFunc = func(ref string) (interface{}, []byte, error) {
			return client.TaskInspectWithRaw(ctx, ref)
		}
	case "":
		getRefFunc = inspectAll(ctx, dockerCli, opts.size)
	default:
		return fmt.Errorf("%q is not a valid value for --type", opts.inspectType)
	}

	return inspect.Inspect(dockerCli.Out(), opts.ids, opts.format, getRefFunc)
}

func newCreateCommand(dockerCli *client.DockerCli) *cobra.Command {
	opts := createOptions{
		driverOpts: *opts.NewMapOpts(nil, nil),
	}

	cmd := &cobra.Command{
		Use:   "create [OPTIONS] [VOLUME]",
		Short: "Create a volume",
		Long:  createDescription,
		Args:  cli.RequiresMaxArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			if len(args) == 1 {
				if opts.name != "" {
					fmt.Fprint(dockerCli.Err(), "Conflicting options: either specify --name or provide positional arg, not both\n")
					return cli.StatusError{StatusCode: 1}
				}
				opts.name = args[0]
			}
			return runCreate(dockerCli, opts)
		},
	}
	flags := cmd.Flags()
	flags.StringVarP(&opts.driver, "driver", "d", "local", "Specify volume driver name")
	flags.StringVar(&opts.name, "name", "", "Specify volume name")
	flags.Lookup("name").Hidden = true
	flags.VarP(&opts.driverOpts, "opt", "o", "Set driver specific options")
	flags.StringSliceVar(&opts.labels, "label", []string{}, "Set metadata for a volume")

	return cmd
}

func runCreate(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts *createOptions, copts *runconfigopts.ContainerOptions) error {
	config, hostConfig, networkingConfig, err := runconfigopts.Parse(flags, copts)
	if err != nil {
		reportError(dockerCli.Err(), "create", err.Error(), true)
		return cli.StatusError{StatusCode: 125}
	}
	response, err := createContainer(context.Background(), dockerCli, config, hostConfig, networkingConfig, hostConfig.ContainerIDFile, opts.name)
	if err != nil {
		return err
	}
	fmt.Fprintf(dockerCli.Out(), "%s\n", response.ID)
	return nil
}

func runDeploy(dockerCli *client.DockerCli, opts deployOptions) error {
	bundle, err := loadBundlefile(dockerCli.Err(), opts.namespace, opts.bundlefile)
	if err != nil {
		return err
	}

	networks := getUniqueNetworkNames(bundle.Services)
	ctx := context.Background()

	if err := updateNetworks(ctx, dockerCli, networks, opts.namespace); err != nil {
		return err
	}
	return deployServices(ctx, dockerCli, bundle.Services, opts.namespace)
}

func startContainersWithoutAttachments(dockerCli *client.DockerCli, ctx context.Context, containers []string) error {
	var failedContainers []string
	for _, container := range containers {
		if err := dockerCli.Client().ContainerStart(ctx, container, types.ContainerStartOptions{}); err != nil {
			fmt.Fprintf(dockerCli.Err(), "%s\n", err)
			failedContainers = append(failedContainers, container)
		} else {
			fmt.Fprintf(dockerCli.Out(), "%s\n", container)
		}
	}

	if len(failedContainers) > 0 {
		return fmt.Errorf("Error: failed to start containers: %v", strings.Join(failedContainers, ", "))
	}
	return nil
}

func runRename(dockerCli *client.DockerCli, opts *renameOptions) error {
	ctx := context.Background()

	oldName := strings.TrimSpace(opts.oldName)
	newName := strings.TrimSpace(opts.newName)

	if oldName == "" || newName == "" {
		return fmt.Errorf("Error: Neither old nor new names may be empty")
	}

	if err := dockerCli.Client().ContainerRename(ctx, oldName, newName); err != nil {
		fmt.Fprintf(dockerCli.Err(), "%s\n", err)
		return fmt.Errorf("Error: failed to rename container named %s", oldName)
	}
	return nil
}

// NewVolumeCommand returns a cobra command for `volume` subcommands
func NewVolumeCommand(dockerCli *client.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "volume",
		Short: "Manage Docker volumes",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
		},
	}
	cmd.AddCommand(
		newCreateCommand(dockerCli),
		newInspectCommand(dockerCli),
		newListCommand(dockerCli),
		newRemoveCommand(dockerCli),
	)
	return cmd
}

// NewStackCommand returns a cobra command for `stack` subcommands
func NewStackCommand(dockerCli *client.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "stack",
		Short: "Manage Docker stacks",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
		},
	}
	cmd.AddCommand(
		newConfigCommand(dockerCli),
		newDeployCommand(dockerCli),
		newRemoveCommand(dockerCli),
		newTasksCommand(dockerCli),
	)
	return cmd
}

func runLogout(dockerCli *client.DockerCli, serverAddress string) error {
	ctx := context.Background()
	var isDefaultRegistry bool

	if serverAddress == "" {
		serverAddress = dockerCli.ElectAuthServer(ctx)
		isDefaultRegistry = true
	}

	var (
		loggedIn        bool
		regsToLogout    []string
		hostnameAddress = serverAddress
		regsToTry       = []string{serverAddress}
	)
	if !isDefaultRegistry {
		hostnameAddress = registry.ConvertToHostname(serverAddress)
		// the tries below are kept for backward compatibily where a user could have
		// saved the registry in one of the following format.
		regsToTry = append(regsToTry, hostnameAddress, "http://"+hostnameAddress, "https://"+hostnameAddress)
	}

	// check if we're logged in based on the records in the config file
	// which means it couldn't have user/pass cause they may be in the creds store
	for _, s := range regsToTry {
		if _, ok := dockerCli.ConfigFile().AuthConfigs[s]; ok {
			loggedIn = true
			regsToLogout = append(regsToLogout, s)
		}
	}

	if !loggedIn {
		fmt.Fprintf(dockerCli.Out(), "Not logged in to %s\n", hostnameAddress)
		return nil
	}

	fmt.Fprintf(dockerCli.Out(), "Removing login credentials for %s\n", hostnameAddress)
	for _, r := range regsToLogout {
		if err := client.EraseCredentials(dockerCli.ConfigFile(), r); err != nil {
			fmt.Fprintf(dockerCli.Err(), "WARNING: could not erase credentials: %v\n", err)
		}
	}

	return nil
}

// NewSwarmCommand returns a cobra command for `swarm` subcommands
func NewSwarmCommand(dockerCli *client.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "swarm",
		Short: "Manage docker swarm",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
		},
	}
	cmd.AddCommand(
		newInitCommand(dockerCli),
		newJoinCommand(dockerCli),
		newUpdateCommand(dockerCli),
		newLeaveCommand(dockerCli),
		newInspectCommand(dockerCli),
	)
	return cmd
}

func runRemove(dockerCli *client.DockerCli, opts *removeOptions) error {
	client := dockerCli.Client()
	ctx := context.Background()
	status := 0

	for _, name := range opts.volumes {
		if err := client.VolumeRemove(ctx, name, opts.force); err != nil {
			fmt.Fprintf(dockerCli.Err(), "%s\n", err)
			status = 1
			continue
		}
		fmt.Fprintf(dockerCli.Out(), "%s\n", name)
	}

	if status != 0 {
		return cli.StatusError{StatusCode: status}
	}
	return nil
}