Golang DockerCli.Err方法代码示例

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

	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()

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

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

// NewImageCommand returns a cobra command for `image` subcommands
func NewImageCommand(dockerCli *command.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "image",
		Short: "Manage images",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
		},
	}
	cmd.AddCommand(
		NewBuildCommand(dockerCli),
		NewHistoryCommand(dockerCli),
		NewImportCommand(dockerCli),
		NewLoadCommand(dockerCli),
		NewPullCommand(dockerCli),
		NewPushCommand(dockerCli),
		NewSaveCommand(dockerCli),
		NewTagCommand(dockerCli),
		newListCommand(dockerCli),
		newRemoveCommand(dockerCli),
		newInspectCommand(dockerCli),
		NewPruneCommand(dockerCli),
	)

	return cmd
}

func runConfig(dockerCli *command.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 newCreateCommand(dockerCli *command.DockerCli) *cobra.Command {
	opts := createOptions{
		driverOpts: *opts.NewMapOpts(nil, nil),
		labels:     opts.NewListOpts(opts.ValidateEnv),
	}

	cmd := &cobra.Command{
		Use:   "create [OPTIONS] [VOLUME]",
		Short: "Create a volume",
		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.Var(&opts.labels, "label", "Set metadata for a volume")

	return cmd
}

// NewImageCommand returns a cobra command for `image` subcommands
func NewImageCommand(dockerCli *command.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "image",
		Short: "Manage images",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			cmd.SetOutput(dockerCli.Err())
			cmd.HelpFunc()(cmd, args)
		},
	}
	cmd.AddCommand(
		NewBuildCommand(dockerCli),
		NewHistoryCommand(dockerCli),
		NewImportCommand(dockerCli),
		NewLoadCommand(dockerCli),
		NewPullCommand(dockerCli),
		NewPushCommand(dockerCli),
		NewSaveCommand(dockerCli),
		NewTagCommand(dockerCli),
		newListCommand(dockerCli),
		newRemoveCommand(dockerCli),
		newInspectCommand(dockerCli),
		NewPruneCommand(dockerCli),
	)
	return cmd
}

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

	options := types.ContainerLogsOptions{
		ShowStdout: true,
		ShowStderr: true,
		Since:      opts.since,
		Timestamps: opts.timestamps,
		Follow:     opts.follow,
		Tail:       opts.tail,
		Details:    opts.details,
	}

	client := dockerCli.Client()
	responseBody, err := client.ServiceLogs(ctx, opts.service, options)
	if err != nil {
		return err
	}
	defer responseBody.Close()

	resolver := idresolver.New(client, opts.noResolve)

	stdout := &logWriter{ctx: ctx, opts: opts, r: resolver, w: dockerCli.Out()}
	stderr := &logWriter{ctx: ctx, opts: opts, r: resolver, w: dockerCli.Err()}

	// TODO(aluzzardi): Do an io.Copy for services with TTY enabled.
	_, err = stdcopy.StdCopy(stdout, stderr, responseBody)
	return err
}

// ForwardAllSignals forwards signals to the container
func ForwardAllSignals(ctx context.Context, cli *command.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 runServiceScale(dockerCli *command.DockerCli, serviceID string, scale uint64) error {
	client := dockerCli.Client()
	ctx := context.Background()

	service, _, err := client.ServiceInspectWithRaw(ctx, serviceID)
	if err != nil {
		return err
	}

	serviceMode := &service.Spec.Mode
	if serviceMode.Replicated == nil {
		return fmt.Errorf("scale can only be used with replicated mode")
	}

	serviceMode.Replicated.Replicas = &scale

	response, err := client.ServiceUpdate(ctx, service.ID, service.Version, service.Spec, types.ServiceUpdateOptions{})
	if err != nil {
		return err
	}

	for _, warning := range response.Warnings {
		fmt.Fprintln(dockerCli.Err(), warning)
	}

	fmt.Fprintf(dockerCli.Out(), "%s scaled to %d\n", serviceID, scale)
	return nil
}

func runLogs(dockerCli *command.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 newDockerCommand(dockerCli *command.DockerCli) *cobra.Command {
	opts := cliflags.NewClientOptions()
	var flags *pflag.FlagSet

	cmd := &cobra.Command{
		Use:              "docker [OPTIONS] COMMAND [ARG...]",
		Short:            "A self-sufficient runtime for containers",
		SilenceUsage:     true,
		SilenceErrors:    true,
		TraverseChildren: true,
		Args:             noArgs,
		RunE: func(cmd *cobra.Command, args []string) error {
			if opts.Version {
				showVersion()
				return nil
			}
			cmd.SetOutput(dockerCli.Err())
			cmd.HelpFunc()(cmd, args)
			return nil
		},
		PersistentPreRunE: func(cmd *cobra.Command, args []string) error {
			// flags must be the top-level command flags, not cmd.Flags()
			opts.Common.SetDefaultOptions(flags)
			dockerPreRun(opts)
			return dockerCli.Initialize(opts)
		},
	}
	cli.SetupRootCommand(cmd)

	cmd.SetHelpFunc(func(ccmd *cobra.Command, args []string) {
		var err error
		if dockerCli.Client() == nil {
			// flags must be the top-level command flags, not cmd.Flags()
			opts.Common.SetDefaultOptions(flags)
			dockerPreRun(opts)
			err = dockerCli.Initialize(opts)
		}
		if err != nil || !dockerCli.HasExperimental() {
			hideExperimentalFeatures(ccmd)
		}
		if err := ccmd.Help(); err != nil {
			ccmd.Println(err)
		}
	})

	flags = cmd.Flags()
	flags.BoolVarP(&opts.Version, "version", "v", false, "Print version information and quit")
	flags.StringVar(&opts.ConfigDir, "config", cliconfig.ConfigDir(), "Location of client config files")
	opts.Common.InstallFlags(flags)

	cmd.SetOutput(dockerCli.Out())
	cmd.AddCommand(newDaemonCommand())
	commands.AddCommands(cmd, dockerCli)

	return cmd
}

func runCreate(dockerCli *command.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 deployCompose(ctx context.Context, dockerCli *command.DockerCli, opts deployOptions) error {
	configDetails, err := getConfigDetails(opts)
	if err != nil {
		return err
	}

	config, err := loader.Load(configDetails)
	if err != nil {
		if fpe, ok := err.(*loader.ForbiddenPropertiesError); ok {
			return fmt.Errorf("Compose file contains unsupported options:\n\n%s\n",
				propertyWarnings(fpe.Properties))
		}

		return err
	}

	unsupportedProperties := loader.GetUnsupportedProperties(configDetails)
	if len(unsupportedProperties) > 0 {
		fmt.Fprintf(dockerCli.Err(), "Ignoring unsupported options: %s\n\n",
			strings.Join(unsupportedProperties, ", "))
	}

	deprecatedProperties := loader.GetDeprecatedProperties(configDetails)
	if len(deprecatedProperties) > 0 {
		fmt.Fprintf(dockerCli.Err(), "Ignoring deprecated options:\n\n%s\n\n",
			propertyWarnings(deprecatedProperties))
	}

	if err := checkDaemonIsSwarmManager(ctx, dockerCli); err != nil {
		return err
	}

	namespace := convert.NewNamespace(opts.namespace)

	serviceNetworks := getServicesDeclaredNetworks(config.Services)

	networks, externalNetworks := convert.Networks(namespace, config.Networks, serviceNetworks)
	if err := validateExternalNetworks(ctx, dockerCli, externalNetworks); err != nil {
		return err
	}
	if err := createNetworks(ctx, dockerCli, namespace, networks); err != nil {
		return err
	}
	services, err := convert.Services(namespace, config)
	if err != nil {
		return err
	}
	return deployServices(ctx, dockerCli, services, namespace, opts.sendRegistryAuth)
}

// NewSystemCommand returns a cobra command for `system` subcommands
func NewSystemCommand(dockerCli *command.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "system",
		Short: "Manage Docker",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
		},
	}
	cmd.AddCommand(
		NewEventsCommand(dockerCli),
		NewInfoCommand(dockerCli),
	)
	return cmd
}

func runCreate(dockerCli *command.DockerCli, opts *serviceOptions) error {
	apiClient := dockerCli.Client()
	createOpts := types.ServiceCreateOptions{}

	service, err := opts.ToService()
	if err != nil {
		return err
	}

	specifiedSecrets := opts.secrets.Value()
	if len(specifiedSecrets) > 0 {
		// parse and validate secrets
		secrets, err := parseSecrets(apiClient, specifiedSecrets)
		if err != nil {
			return err
		}
		service.TaskTemplate.ContainerSpec.Secrets = secrets

	}

	ctx := context.Background()

	if err := resolveServiceImageDigest(dockerCli, &service); err != nil {
		return err
	}

	// only send auth if flag was set
	if opts.registryAuth {
		// Retrieve encoded auth token from the image reference
		encodedAuth, err := command.RetrieveAuthTokenFromImage(ctx, dockerCli, opts.image)
		if err != nil {
			return err
		}
		createOpts.EncodedRegistryAuth = encodedAuth
	}

	response, err := apiClient.ServiceCreate(ctx, service, createOpts)
	if err != nil {
		return err
	}

	for _, warning := range response.Warnings {
		fmt.Fprintln(dockerCli.Err(), warning)
	}

	fmt.Fprintf(dockerCli.Out(), "%s\n", response.ID)
	return nil
}

// NewCheckpointCommand returns the `checkpoint` subcommand (only in experimental)
func NewCheckpointCommand(dockerCli *command.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "checkpoint",
		Short: "Manage checkpoints",
		Args:  cli.NoArgs,
		Run: func(cmd *cobra.Command, args []string) {
			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
		},
	}
	cmd.AddCommand(
		newCreateCommand(dockerCli),
		newListCommand(dockerCli),
		newRemoveCommand(dockerCli),
	)
	return cmd
}