Golang DockerCli.ConfigFile方法代码示例

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

	options := types.ImageListOptions{
		MatchName: opts.matchName,
		All:       opts.all,
		Filters:   opts.filter.Value(),
	}

	images, err := dockerCli.Client().ImageList(ctx, options)
	if err != nil {
		return err
	}

	format := opts.format
	if len(format) == 0 {
		if len(dockerCli.ConfigFile().ImagesFormat) > 0 && !opts.quiet {
			format = dockerCli.ConfigFile().ImagesFormat
		} else {
			format = formatter.TableFormatKey
		}
	}

	imageCtx := formatter.ImageContext{
		Context: formatter.Context{
			Output: dockerCli.Out(),
			Format: formatter.NewImageFormat(format, opts.quiet, opts.showDigests),
			Trunc:  !opts.noTrunc,
		},
		Digest: opts.showDigests,
	}
	return formatter.ImageWrite(imageCtx, images)
}

func runList(dockerCli *command.DockerCli, opts listOptions) error {
	client := dockerCli.Client()
	options := types.NetworkListOptions{Filters: opts.filter.Value()}
	networkResources, err := client.NetworkList(context.Background(), options)
	if err != nil {
		return err
	}

	format := opts.format
	if len(format) == 0 {
		if len(dockerCli.ConfigFile().NetworksFormat) > 0 && !opts.quiet {
			format = dockerCli.ConfigFile().NetworksFormat
		} else {
			format = formatter.TableFormatKey
		}
	}

	sort.Sort(byNetworkName(networkResources))

	networksCtx := formatter.Context{
		Output: dockerCli.Out(),
		Format: formatter.NewNetworkFormat(format, opts.quiet),
		Trunc:  !opts.noTrunc,
	}
	return formatter.NetworkWrite(networksCtx, networkResources)
}

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

	listOptions, err := buildContainerListOptions(opts)
	if err != nil {
		return err
	}

	containers, err := dockerCli.Client().ContainerList(ctx, *listOptions)
	if err != nil {
		return err
	}

	format := opts.format
	if len(format) == 0 {
		if len(dockerCli.ConfigFile().PsFormat) > 0 && !opts.quiet {
			format = dockerCli.ConfigFile().PsFormat
		} else {
			format = formatter.TableFormatKey
		}
	}

	containerCtx := formatter.Context{
		Output: dockerCli.Out(),
		Format: formatter.NewContainerFormat(format, opts.quiet, listOptions.Size),
		Trunc:  !opts.noTrunc,
	}
	return formatter.ContainerWrite(containerCtx, containers)
}

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

	// Consolidate all filter flags, and sanity check them early.
	// They'll get process in the daemon/server.
	imageFilterArgs := filters.NewArgs()
	for _, f := range opts.filter {
		var err error
		imageFilterArgs, err = filters.ParseFlag(f, imageFilterArgs)
		if err != nil {
			return err
		}
	}

	matchName := opts.matchName

	options := types.ImageListOptions{
		MatchName: matchName,
		All:       opts.all,
		Filters:   imageFilterArgs,
	}

	images, err := dockerCli.Client().ImageList(ctx, options)
	if err != nil {
		return err
	}

	f := opts.format
	if len(f) == 0 {
		if len(dockerCli.ConfigFile().ImagesFormat) > 0 && !opts.quiet {
			f = dockerCli.ConfigFile().ImagesFormat
		} else {
			f = "table"
		}
	}

	imagesCtx := formatter.ImageContext{
		Context: formatter.Context{
			Output: dockerCli.Out(),
			Format: f,
			Quiet:  opts.quiet,
			Trunc:  !opts.noTrunc,
		},
		Digest: opts.showDigests,
		Images: images,
	}

	imagesCtx.Write()

	return nil
}

func runList(dockerCli *command.DockerCli, opts listOptions) error {
	client := dockerCli.Client()

	netFilterArgs := filters.NewArgs()
	for _, f := range opts.filter {
		var err error
		netFilterArgs, err = filters.ParseFlag(f, netFilterArgs)
		if err != nil {
			return err
		}
	}

	options := types.NetworkListOptions{
		Filters: netFilterArgs,
	}

	networkResources, err := client.NetworkList(context.Background(), options)
	if err != nil {
		return err
	}

	f := opts.format
	if len(f) == 0 {
		if len(dockerCli.ConfigFile().NetworksFormat) > 0 && !opts.quiet {
			f = dockerCli.ConfigFile().NetworksFormat
		} else {
			f = "table"
		}
	}

	sort.Sort(byNetworkName(networkResources))

	networksCtx := formatter.NetworkContext{
		Context: formatter.Context{
			Output: dockerCli.Out(),
			Format: f,
			Quiet:  opts.quiet,
			Trunc:  !opts.noTrunc,
		},
		Networks: networkResources,
	}

	networksCtx.Write()

	return nil
}

func runLogout(dockerCli *command.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 := command.EraseCredentials(dockerCli.ConfigFile(), r); err != nil {
			fmt.Fprintf(dockerCli.Err(), "WARNING: could not erase credentials: %v\n", err)
		}
	}

	return nil
}

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

	if opts.pretty {
		opts.format = "pretty"
	}

	getRef := func(ref string) (interface{}, []byte, error) {
		service, _, err := client.ServiceInspectWithRaw(ctx, ref)
		if err == nil || !apiclient.IsErrServiceNotFound(err) {
			return service, nil, err
		}
		return nil, nil, fmt.Errorf("Error: no such service: %s", ref)
	}

	f := opts.format
	if len(f) == 0 {
		f = "raw"
		if len(dockerCli.ConfigFile().ServiceInspectFormat) > 0 {
			f = dockerCli.ConfigFile().ServiceInspectFormat
		}
	}

	// check if the user is trying to apply a template to the pretty format, which
	// is not supported
	if strings.HasPrefix(f, "pretty") && f != "pretty" {
		return fmt.Errorf("Cannot supply extra formatting options to the pretty template")
	}

	serviceCtx := formatter.Context{
		Output: dockerCli.Out(),
		Format: formatter.NewServiceFormat(f),
	}

	if err := formatter.ServiceInspectWrite(serviceCtx, opts.refs, getRef); err != nil {
		return cli.StatusError{StatusCode: 1, Status: err.Error()}
	}
	return nil
}

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

	listOptions, err := buildContainerListOptions(opts)
	if err != nil {
		return err
	}

	containers, err := dockerCli.Client().ContainerList(ctx, *listOptions)
	if err != nil {
		return err
	}

	f := opts.format
	if len(f) == 0 {
		if len(dockerCli.ConfigFile().PsFormat) > 0 && !opts.quiet {
			f = dockerCli.ConfigFile().PsFormat
		} else {
			f = "table"
		}
	}

	psCtx := formatter.ContainerContext{
		Context: formatter.Context{
			Output: dockerCli.Out(),
			Format: f,
			Quiet:  opts.quiet,
			Trunc:  !opts.noTrunc,
		},
		Size:       listOptions.Size,
		Containers: containers,
	}

	psCtx.Write()

	return nil
}

func runList(dockerCli *command.DockerCli, opts listOptions) error {
	client := dockerCli.Client()
	volumes, err := client.VolumeList(context.Background(), opts.filter.Value())
	if err != nil {
		return err
	}

	format := opts.format
	if len(format) == 0 {
		if len(dockerCli.ConfigFile().VolumesFormat) > 0 && !opts.quiet {
			format = dockerCli.ConfigFile().VolumesFormat
		} else {
			format = formatter.TableFormatKey
		}
	}

	sort.Sort(byVolumeName(volumes.Volumes))

	volumeCtx := formatter.Context{
		Output: dockerCli.Out(),
		Format: formatter.NewVolumeFormat(format, opts.quiet),
	}
	return formatter.VolumeWrite(volumeCtx, volumes.Volumes)
}

func runStart(dockerCli *command.DockerCli, opts *startOptions) error {
	ctx, cancelFun := context.WithCancel(context.Background())

	if opts.attach || opts.openStdin {
		// We're going to attach to a container.
		// 1. Ensure we only have one container.
		if len(opts.containers) > 1 {
			return fmt.Errorf("You cannot start and attach multiple containers at once.")
		}

		// 2. Attach to the container.
		container := opts.containers[0]
		c, err := dockerCli.Client().ContainerInspect(ctx, container)
		if err != nil {
			return err
		}

		// We always use c.ID instead of container to maintain consistency during `docker start`
		if !c.Config.Tty {
			sigc := ForwardAllSignals(ctx, dockerCli, c.ID)
			defer signal.StopCatch(sigc)
		}

		if opts.detachKeys != "" {
			dockerCli.ConfigFile().DetachKeys = opts.detachKeys
		}

		options := types.ContainerAttachOptions{
			Stream:     true,
			Stdin:      opts.openStdin && c.Config.OpenStdin,
			Stdout:     true,
			Stderr:     true,
			DetachKeys: dockerCli.ConfigFile().DetachKeys,
		}

		var in io.ReadCloser

		if options.Stdin {
			in = dockerCli.In()
		}

		resp, errAttach := dockerCli.Client().ContainerAttach(ctx, c.ID, options)
		if errAttach != nil && errAttach != httputil.ErrPersistEOF {
			// ContainerAttach return an ErrPersistEOF (connection closed)
			// means server met an error and already put it in Hijacked connection,
			// we would keep the error and read the detailed error message from hijacked connection
			return errAttach
		}
		defer resp.Close()
		cErr := promise.Go(func() error {
			errHijack := holdHijackedConnection(ctx, dockerCli, c.Config.Tty, in, dockerCli.Out(), dockerCli.Err(), resp)
			if errHijack == nil {
				return errAttach
			}
			return errHijack
		})

		// 3. We should open a channel for receiving status code of the container
		// no matter it's detached, removed on daemon side(--rm) or exit normally.
		statusChan, statusErr := waitExitOrRemoved(dockerCli, context.Background(), c.ID, c.HostConfig.AutoRemove)
		startOptions := types.ContainerStartOptions{
			CheckpointID: opts.checkpoint,
		}

		// 4. Start the container.
		if err := dockerCli.Client().ContainerStart(ctx, c.ID, startOptions); err != nil {
			cancelFun()
			<-cErr
			if c.HostConfig.AutoRemove && statusErr == nil {
				// wait container to be removed
				<-statusChan
			}
			return err
		}

		// 5. Wait for attachment to break.
		if c.Config.Tty && dockerCli.Out().IsTerminal() {
			if err := MonitorTtySize(ctx, dockerCli, c.ID, false); err != nil {
				fmt.Fprintf(dockerCli.Err(), "Error monitoring TTY size: %s\n", err)
			}
		}
		if attchErr := <-cErr; attchErr != nil {
			return attchErr
		}

		if statusErr != nil {
			return fmt.Errorf("can't get container's exit code: %v", statusErr)
		}

		if status := <-statusChan; status != 0 {
			return cli.StatusError{StatusCode: status}
		}
	} else if opts.checkpoint != "" {
		if len(opts.containers) > 1 {
			return fmt.Errorf("You cannot restore multiple containers at once.")
		}
		container := opts.containers[0]
		startOptions := types.ContainerStartOptions{
			CheckpointID: opts.checkpoint,
		}
//.........这里部分代码省略.........

//.........这里部分代码省略.........
	var (
		waitDisplayID chan struct{}
		errCh         chan error
	)
	if !config.AttachStdout && !config.AttachStderr {
		// Make this asynchronous to allow the client to write to stdin before having to read the ID
		waitDisplayID = make(chan struct{})
		go func() {
			defer close(waitDisplayID)
			fmt.Fprintln(stdout, createResponse.ID)
		}()
	}
	attach := config.AttachStdin || config.AttachStdout || config.AttachStderr
	if attach {
		var (
			out, cerr io.Writer
			in        io.ReadCloser
		)
		if config.AttachStdin {
			in = stdin
		}
		if config.AttachStdout {
			out = stdout
		}
		if config.AttachStderr {
			if config.Tty {
				cerr = stdout
			} else {
				cerr = stderr
			}
		}

		if opts.detachKeys != "" {
			dockerCli.ConfigFile().DetachKeys = opts.detachKeys
		}

		options := types.ContainerAttachOptions{
			Stream:     true,
			Stdin:      config.AttachStdin,
			Stdout:     config.AttachStdout,
			Stderr:     config.AttachStderr,
			DetachKeys: dockerCli.ConfigFile().DetachKeys,
		}

		resp, errAttach := client.ContainerAttach(ctx, createResponse.ID, options)
		if errAttach != nil && errAttach != httputil.ErrPersistEOF {
			// ContainerAttach returns an ErrPersistEOF (connection closed)
			// means server met an error and put it in Hijacked connection
			// keep the error and read detailed error message from hijacked connection later
			return errAttach
		}
		defer resp.Close()

		errCh = promise.Go(func() error {
			if errHijack := holdHijackedConnection(ctx, dockerCli, config.Tty, in, out, cerr, resp); errHijack != nil {
				return errHijack
			}
			return errAttach
		})
	}

	statusChan := waitExitOrRemoved(ctx, dockerCli, createResponse.ID, hostConfig.AutoRemove)

	//start the container
	if err := client.ContainerStart(ctx, createResponse.ID, types.ContainerStartOptions{}); err != nil {
		// If we have holdHijackedConnection, we should notify

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

	// Isolation only has meaning on a Windows daemon.
	if info.OSType == "windows" {
		fmt.Fprintf(dockerCli.Out(), "Default Isolation: %v\n", info.Isolation)
	}

	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Kernel Version: %s\n", info.KernelVersion)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Operating System: %s\n", info.OperatingSystem)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "OSType: %s\n", info.OSType)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Architecture: %s\n", info.Architecture)
	fmt.Fprintf(dockerCli.Out(), "CPUs: %d\n", info.NCPU)
	fmt.Fprintf(dockerCli.Out(), "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal)))
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Name: %s\n", info.Name)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "ID: %s\n", info.ID)
	fmt.Fprintf(dockerCli.Out(), "Docker Root Dir: %s\n", info.DockerRootDir)
	fmt.Fprintf(dockerCli.Out(), "Debug Mode (client): %v\n", utils.IsDebugEnabled())
	fmt.Fprintf(dockerCli.Out(), "Debug Mode (server): %v\n", info.Debug)

	if info.Debug {
		fmt.Fprintf(dockerCli.Out(), " File Descriptors: %d\n", info.NFd)
		fmt.Fprintf(dockerCli.Out(), " Goroutines: %d\n", info.NGoroutines)
		fmt.Fprintf(dockerCli.Out(), " System Time: %s\n", info.SystemTime)
		fmt.Fprintf(dockerCli.Out(), " EventsListeners: %d\n", info.NEventsListener)
	}

	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Http Proxy: %s\n", info.HTTPProxy)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Https Proxy: %s\n", info.HTTPSProxy)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "No Proxy: %s\n", info.NoProxy)

	if info.IndexServerAddress != "" {
		u := dockerCli.ConfigFile().AuthConfigs[info.IndexServerAddress].Username
		if len(u) > 0 {
			fmt.Fprintf(dockerCli.Out(), "Username: %v\n", u)
		}
		fmt.Fprintf(dockerCli.Out(), "Registry: %v\n", info.IndexServerAddress)
	}

	// Only output these warnings if the server does not support these features
	if info.OSType != "windows" {
		if !info.MemoryLimit {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No memory limit support")
		}
		if !info.SwapLimit {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No swap limit support")
		}
		if !info.KernelMemory {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No kernel memory limit support")
		}
		if !info.OomKillDisable {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No oom kill disable support")
		}
		if !info.CPUCfsQuota {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs quota support")
		}
		if !info.CPUCfsPeriod {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs period support")
		}
		if !info.CPUShares {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu shares support")
		}
		if !info.CPUSet {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpuset support")
		}

//.........这里部分代码省略.........
		fmt.Fprintf(dockerCli.Out(), "Default Runtime: %s\n", info.DefaultRuntime)
	}

	if info.OSType == "linux" {
		fmt.Fprintf(dockerCli.Out(), "Security Options:")
		ioutils.FprintfIfNotEmpty(dockerCli.Out(), " %s", strings.Join(info.SecurityOptions, " "))
		fmt.Fprintf(dockerCli.Out(), "\n")
	}

	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Kernel Version: %s\n", info.KernelVersion)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Operating System: %s\n", info.OperatingSystem)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "OSType: %s\n", info.OSType)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Architecture: %s\n", info.Architecture)
	fmt.Fprintf(dockerCli.Out(), "CPUs: %d\n", info.NCPU)
	fmt.Fprintf(dockerCli.Out(), "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal)))
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Name: %s\n", info.Name)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "ID: %s\n", info.ID)
	fmt.Fprintf(dockerCli.Out(), "Docker Root Dir: %s\n", info.DockerRootDir)
	fmt.Fprintf(dockerCli.Out(), "Debug Mode (client): %v\n", utils.IsDebugEnabled())
	fmt.Fprintf(dockerCli.Out(), "Debug Mode (server): %v\n", info.Debug)

	if info.Debug {
		fmt.Fprintf(dockerCli.Out(), " File Descriptors: %d\n", info.NFd)
		fmt.Fprintf(dockerCli.Out(), " Goroutines: %d\n", info.NGoroutines)
		fmt.Fprintf(dockerCli.Out(), " System Time: %s\n", info.SystemTime)
		fmt.Fprintf(dockerCli.Out(), " EventsListeners: %d\n", info.NEventsListener)
	}

	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Http Proxy: %s\n", info.HTTPProxy)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "Https Proxy: %s\n", info.HTTPSProxy)
	ioutils.FprintfIfNotEmpty(dockerCli.Out(), "No Proxy: %s\n", info.NoProxy)

	if info.IndexServerAddress != "" {
		u := dockerCli.ConfigFile().AuthConfigs[info.IndexServerAddress].Username
		if len(u) > 0 {
			fmt.Fprintf(dockerCli.Out(), "Username: %v\n", u)
		}
		fmt.Fprintf(dockerCli.Out(), "Registry: %v\n", info.IndexServerAddress)
	}

	// Only output these warnings if the server does not support these features
	if info.OSType != "windows" {
		if !info.MemoryLimit {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No memory limit support")
		}
		if !info.SwapLimit {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No swap limit support")
		}
		if !info.KernelMemory {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No kernel memory limit support")
		}
		if !info.OomKillDisable {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No oom kill disable support")
		}
		if !info.CPUCfsQuota {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs quota support")
		}
		if !info.CPUCfsPeriod {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu cfs period support")
		}
		if !info.CPUShares {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpu shares support")
		}
		if !info.CPUSet {
			fmt.Fprintln(dockerCli.Err(), "WARNING: No cpuset support")
		}

func runExec(dockerCli *command.DockerCli, opts *execOptions, container string, execCmd []string) error {
	execConfig, err := parseExec(opts, execCmd)
	// just in case the ParseExec does not exit
	if container == "" || err != nil {
		return cli.StatusError{StatusCode: 1}
	}

	if opts.detachKeys != "" {
		dockerCli.ConfigFile().DetachKeys = opts.detachKeys
	}

	// Send client escape keys
	execConfig.DetachKeys = dockerCli.ConfigFile().DetachKeys

	ctx := context.Background()
	client := dockerCli.Client()

	response, err := client.ContainerExecCreate(ctx, container, *execConfig)
	if err != nil {
		return err
	}

	execID := response.ID
	if execID == "" {
		fmt.Fprintln(dockerCli.Out(), "exec ID empty")
		return nil
	}

	//Temp struct for execStart so that we don't need to transfer all the execConfig
	if !execConfig.Detach {
		if err := dockerCli.In().CheckTty(execConfig.AttachStdin, execConfig.Tty); err != nil {
			return err
		}
	} else {
		execStartCheck := types.ExecStartCheck{
			Detach: execConfig.Detach,
			Tty:    execConfig.Tty,
		}

		if err := client.ContainerExecStart(ctx, execID, execStartCheck); err != nil {
			return err
		}
		// For now don't print this - wait for when we support exec wait()
		// fmt.Fprintf(dockerCli.Out(), "%s\n", execID)
		return nil
	}

	// Interactive exec requested.
	var (
		out, stderr io.Writer
		in          io.ReadCloser
		errCh       chan error
	)

	if execConfig.AttachStdin {
		in = dockerCli.In()
	}
	if execConfig.AttachStdout {
		out = dockerCli.Out()
	}
	if execConfig.AttachStderr {
		if execConfig.Tty {
			stderr = dockerCli.Out()
		} else {
			stderr = dockerCli.Err()
		}
	}

	resp, err := client.ContainerExecAttach(ctx, execID, *execConfig)
	if err != nil {
		return err
	}
	defer resp.Close()
	errCh = promise.Go(func() error {
		return holdHijackedConnection(ctx, dockerCli, execConfig.Tty, in, out, stderr, resp)
	})

	if execConfig.Tty && dockerCli.In().IsTerminal() {
		if err := MonitorTtySize(ctx, dockerCli, execID, true); err != nil {
			fmt.Fprintln(dockerCli.Err(), "Error monitoring TTY size:", err)
		}
	}

	if err := <-errCh; err != nil {
		logrus.Debugf("Error hijack: %s", err)
		return err
	}

	var status int
	if _, status, err = getExecExitCode(ctx, client, execID); err != nil {
		return err
	}

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

	return nil
}

func runAttach(dockerCli *command.DockerCli, opts *attachOptions) error {
	ctx := context.Background()
	client := dockerCli.Client()

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

	if !c.State.Running {
		return fmt.Errorf("You cannot attach to a stopped container, start it first")
	}

	if c.State.Paused {
		return fmt.Errorf("You cannot attach to a paused container, unpause it first")
	}

	if err := dockerCli.In().CheckTty(!opts.noStdin, c.Config.Tty); err != nil {
		return err
	}

	if opts.detachKeys != "" {
		dockerCli.ConfigFile().DetachKeys = opts.detachKeys
	}

	options := types.ContainerAttachOptions{
		Stream:     true,
		Stdin:      !opts.noStdin && c.Config.OpenStdin,
		Stdout:     true,
		Stderr:     true,
		DetachKeys: dockerCli.ConfigFile().DetachKeys,
	}

	var in io.ReadCloser
	if options.Stdin {
		in = dockerCli.In()
	}

	if opts.proxy && !c.Config.Tty {
		sigc := ForwardAllSignals(ctx, dockerCli, opts.container)
		defer signal.StopCatch(sigc)
	}

	resp, errAttach := client.ContainerAttach(ctx, opts.container, options)
	if errAttach != nil && errAttach != httputil.ErrPersistEOF {
		// ContainerAttach returns an ErrPersistEOF (connection closed)
		// means server met an error and put it in Hijacked connection
		// keep the error and read detailed error message from hijacked connection later
		return errAttach
	}
	defer resp.Close()

	if c.Config.Tty && dockerCli.Out().IsTerminal() {
		height, width := dockerCli.Out().GetTtySize()
		// To handle the case where a user repeatedly attaches/detaches without resizing their
		// terminal, the only way to get the shell prompt to display for attaches 2+ is to artificially
		// resize it, then go back to normal. Without this, every attach after the first will
		// require the user to manually resize or hit enter.
		resizeTtyTo(ctx, client, opts.container, height+1, width+1, false)

		// After the above resizing occurs, the call to MonitorTtySize below will handle resetting back
		// to the actual size.
		if err := MonitorTtySize(ctx, dockerCli, opts.container, false); err != nil {
			logrus.Debugf("Error monitoring TTY size: %s", err)
		}
	}
	if err := holdHijackedConnection(ctx, dockerCli, c.Config.Tty, in, dockerCli.Out(), dockerCli.Err(), resp); err != nil {
		return err
	}

	if errAttach != nil {
		return errAttach
	}

	_, status, err := getExitCode(ctx, dockerCli, opts.container)
	if err != nil {
		return err
	}
	if status != 0 {
		return cli.StatusError{StatusCode: status}
	}

	return nil
}