Golang DockerCli.In方法代码示例

func runLoad(dockerCli *client.DockerCli, opts loadOptions) error {

	var input io.Reader = dockerCli.In()
	if opts.input != "" {
		file, err := os.Open(opts.input)
		if err != nil {
			return err
		}
		defer file.Close()
		input = file
	}
	if !dockerCli.Out().IsTerminal() {
		opts.quiet = true
	}
	response, err := dockerCli.Client().ImageLoad(context.Background(), input, opts.quiet)
	if err != nil {
		return err
	}
	defer response.Body.Close()

	if response.Body != nil && response.JSON {
		return jsonmessage.DisplayJSONMessagesToStream(response.Body, dockerCli.Out(), nil)
	}

	_, err = io.Copy(dockerCli.Out(), response.Body)
	return err
}

func acceptPrivileges(dockerCli *client.DockerCli, name string) func(privileges types.PluginPrivileges) (bool, error) {
	return func(privileges types.PluginPrivileges) (bool, error) {
		fmt.Fprintf(dockerCli.Out(), "Plugin %q is requesting the following privileges:\n", name)
		for _, privilege := range privileges {
			fmt.Fprintf(dockerCli.Out(), " - %s: %v\n", privilege.Name, privilege.Value)
		}

		fmt.Fprint(dockerCli.Out(), "Do you grant the above permissions? [y/N] ")
		reader := bufio.NewReader(dockerCli.In())
		line, _, err := reader.ReadLine()
		if err != nil {
			return false, err
		}
		return strings.ToLower(string(line)) == "y", nil
	}
}

func runImport(dockerCli *client.DockerCli, opts importOptions) error {
	var (
		in      io.Reader
		srcName = opts.source
	)

	if opts.source == "-" {
		in = dockerCli.In()
	} else if !urlutil.IsURL(opts.source) {
		srcName = "-"
		file, err := os.Open(opts.source)
		if err != nil {
			return err
		}
		defer file.Close()
		in = file
	}

	source := types.ImageImportSource{
		Source:     in,
		SourceName: srcName,
	}

	options := types.ImageImportOptions{
		Message: opts.message,
		Changes: opts.changes,
	}

	clnt := dockerCli.Client()

	responseBody, err := clnt.ImageImport(context.Background(), source, opts.reference, options)
	if err != nil {
		return err
	}
	defer responseBody.Close()

	return jsonmessage.DisplayJSONMessagesStream(responseBody, dockerCli.Out(), dockerCli.OutFd(), dockerCli.IsTerminalOut(), nil)
}

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

	c, err := dockerCli.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.CheckTtyInput(!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 := dockerCli.ForwardAllSignals(ctx, opts.container)
		defer signal.StopCatch(sigc)
	}

	resp, errAttach := dockerCli.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.IsTerminalOut() {
		height, width := dockerCli.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.
		dockerCli.ResizeTtyTo(ctx, 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 := dockerCli.MonitorTtySize(ctx, opts.container, false); err != nil {
			logrus.Debugf("Error monitoring TTY size: %s", err)
		}
	}
	if err := dockerCli.HoldHijackedConnection(ctx, c.Config.Tty, in, dockerCli.Out(), dockerCli.Err(), resp); err != nil {
		return err
	}

	if errAttach != nil {
		return errAttach
	}

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

	return nil
}

func runInstall(dockerCli *client.DockerCli, options pluginOptions) error {
	named, err := reference.ParseNamed(options.name) // FIXME: validate
	if err != nil {
		return err
	}
	named = reference.WithDefaultTag(named)
	ref, ok := named.(reference.NamedTagged)
	if !ok {
		return fmt.Errorf("invalid name: %s", named.String())
	}

	ctx := context.Background()

	repoInfo, err := registry.ParseRepositoryInfo(named)
	authConfig := dockerCli.ResolveAuthConfig(ctx, repoInfo.Index)

	encodedAuth, err := client.EncodeAuthToBase64(authConfig)
	if err != nil {
		return err
	}
	// TODO: pass noEnable flag
	return dockerCli.Client().PluginInstall(ctx, ref.String(), encodedAuth, options.grantPerms, false, dockerCli.In(), dockerCli.Out())
}

func runStart(dockerCli *client.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 := dockerCli.ForwardAllSignals(ctx, 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 put it in Hijacked connection
			// keep the error and read detailed error message from hijacked connection
			return errAttach
		}
		defer resp.Close()
		cErr := promise.Go(func() error {
			errHijack := dockerCli.HoldHijackedConnection(ctx, c.Config.Tty, in, dockerCli.Out(), dockerCli.Err(), resp)
			if errHijack == nil {
				return errAttach
			}
			return errHijack
		})

		// 3. Start the container.
		if err := dockerCli.Client().ContainerStart(ctx, c.ID, types.ContainerStartOptions{}); err != nil {
			cancelFun()
			<-cErr
			return err
		}

		// 4. Wait for attachment to break.
		if c.Config.Tty && dockerCli.IsTerminalOut() {
			if err := dockerCli.MonitorTtySize(ctx, c.ID, false); err != nil {
				fmt.Fprintf(dockerCli.Err(), "Error monitoring TTY size: %s\n", err)
			}
		}
		if attchErr := <-cErr; attchErr != nil {
			return attchErr
		}
		_, status, err := getExitCode(dockerCli, ctx, c.ID)
		if err != nil {
			return err
		}
		if status != 0 {
			return cli.StatusError{StatusCode: status}
		}
	} else {
		// We're not going to attach to anything.
		// Start as many containers as we want.
		return startContainersWithoutAttachments(dockerCli, ctx, opts.containers)
	}

	return nil
}

func runBuild(dockerCli *client.DockerCli, options buildOptions) error {

	var (
		buildCtx io.ReadCloser
		err      error
	)

	specifiedContext := options.context

	var (
		contextDir    string
		tempDir       string
		relDockerfile string
		progBuff      io.Writer
		buildBuff     io.Writer
	)

	progBuff = dockerCli.Out()
	buildBuff = dockerCli.Out()
	if options.quiet {
		progBuff = bytes.NewBuffer(nil)
		buildBuff = bytes.NewBuffer(nil)
	}

	switch {
	case specifiedContext == "-":
		buildCtx, relDockerfile, err = builder.GetContextFromReader(dockerCli.In(), options.dockerfileName)
	case urlutil.IsGitURL(specifiedContext):
		tempDir, relDockerfile, err = builder.GetContextFromGitURL(specifiedContext, options.dockerfileName)
	case urlutil.IsURL(specifiedContext):
		buildCtx, relDockerfile, err = builder.GetContextFromURL(progBuff, specifiedContext, options.dockerfileName)
	default:
		contextDir, relDockerfile, err = builder.GetContextFromLocalDir(specifiedContext, options.dockerfileName)
	}

	if err != nil {
		if options.quiet && urlutil.IsURL(specifiedContext) {
			fmt.Fprintln(dockerCli.Err(), progBuff)
		}
		return fmt.Errorf("unable to prepare context: %s", err)
	}

	if tempDir != "" {
		defer os.RemoveAll(tempDir)
		contextDir = tempDir
	}

	if buildCtx == nil {
		// And canonicalize dockerfile name to a platform-independent one
		relDockerfile, err = archive.CanonicalTarNameForPath(relDockerfile)
		if err != nil {
			return fmt.Errorf("cannot canonicalize dockerfile path %s: %v", relDockerfile, err)
		}

		f, err := os.Open(filepath.Join(contextDir, ".dockerignore"))
		if err != nil && !os.IsNotExist(err) {
			return err
		}

		var excludes []string
		if err == nil {
			excludes, err = dockerignore.ReadAll(f)
			if err != nil {
				return err
			}
		}

		if err := builder.ValidateContextDirectory(contextDir, excludes); err != nil {
			return fmt.Errorf("Error checking context: '%s'.", err)
		}

		// If .dockerignore mentions .dockerignore or the Dockerfile
		// then make sure we send both files over to the daemon
		// because Dockerfile is, obviously, needed no matter what, and
		// .dockerignore is needed to know if either one needs to be
		// removed. The daemon will remove them for us, if needed, after it
		// parses the Dockerfile. Ignore errors here, as they will have been
		// caught by validateContextDirectory above.
		var includes = []string{"."}
		keepThem1, _ := fileutils.Matches(".dockerignore", excludes)
		keepThem2, _ := fileutils.Matches(relDockerfile, excludes)
		if keepThem1 || keepThem2 {
			includes = append(includes, ".dockerignore", relDockerfile)
		}

		buildCtx, err = archive.TarWithOptions(contextDir, &archive.TarOptions{
			Compression:     archive.Uncompressed,
			ExcludePatterns: excludes,
			IncludeFiles:    includes,
		})
		if err != nil {
			return err
		}
	}

	ctx := context.Background()

	var resolvedTags []*resolvedTag
	if client.IsTrusted() {
		// Wrap the tar archive to replace the Dockerfile entry with the rewritten
//.........这里部分代码省略.........

func runRun(dockerCli *client.DockerCli, flags *pflag.FlagSet, opts *runOptions, copts *runconfigopts.ContainerOptions) error {
	stdout, stderr, stdin := dockerCli.Out(), dockerCli.Err(), dockerCli.In()
	client := dockerCli.Client()
	// TODO: pass this as an argument
	cmdPath := "run"

	var (
		flAttach                              *opttypes.ListOpts
		ErrConflictAttachDetach               = fmt.Errorf("Conflicting options: -a and -d")
		ErrConflictRestartPolicyAndAutoRemove = fmt.Errorf("Conflicting options: --restart and --rm")
		ErrConflictDetachAutoRemove           = fmt.Errorf("Conflicting options: --rm and -d")
	)

	config, hostConfig, networkingConfig, err := runconfigopts.Parse(flags, copts)

	// just in case the Parse does not exit
	if err != nil {
		reportError(stderr, cmdPath, err.Error(), true)
		return cli.StatusError{StatusCode: 125}
	}

	if hostConfig.OomKillDisable != nil && *hostConfig.OomKillDisable && hostConfig.Memory == 0 {
		fmt.Fprintf(stderr, "WARNING: Disabling the OOM killer on containers without setting a '-m/--memory' limit may be dangerous.\n")
	}

	if len(hostConfig.DNS) > 0 {
		// check the DNS settings passed via --dns against
		// localhost regexp to warn if they are trying to
		// set a DNS to a localhost address
		for _, dnsIP := range hostConfig.DNS {
			if dns.IsLocalhost(dnsIP) {
				fmt.Fprintf(stderr, "WARNING: Localhost DNS setting (--dns=%s) may fail in containers.\n", dnsIP)
				break
			}
		}
	}

	config.ArgsEscaped = false

	if !opts.detach {
		if err := dockerCli.CheckTtyInput(config.AttachStdin, config.Tty); err != nil {
			return err
		}
	} else {
		if fl := flags.Lookup("attach"); fl != nil {
			flAttach = fl.Value.(*opttypes.ListOpts)
			if flAttach.Len() != 0 {
				return ErrConflictAttachDetach
			}
		}
		if opts.autoRemove {
			return ErrConflictDetachAutoRemove
		}

		config.AttachStdin = false
		config.AttachStdout = false
		config.AttachStderr = false
		config.StdinOnce = false
	}

	// Disable sigProxy when in TTY mode
	if config.Tty {
		opts.sigProxy = false
	}

	// Telling the Windows daemon the initial size of the tty during start makes
	// a far better user experience rather than relying on subsequent resizes
	// to cause things to catch up.
	if runtime.GOOS == "windows" {
		hostConfig.ConsoleSize[0], hostConfig.ConsoleSize[1] = dockerCli.GetTtySize()
	}

	ctx, cancelFun := context.WithCancel(context.Background())

	createResponse, err := createContainer(ctx, dockerCli, config, hostConfig, networkingConfig, hostConfig.ContainerIDFile, opts.name)
	if err != nil {
		reportError(stderr, cmdPath, err.Error(), true)
		return runStartContainerErr(err)
	}
	if opts.sigProxy {
		sigc := dockerCli.ForwardAllSignals(ctx, createResponse.ID)
		defer signal.StopCatch(sigc)
	}
	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.Fprintf(stdout, "%s\n", createResponse.ID)
		}()
	}
	if opts.autoRemove && (hostConfig.RestartPolicy.IsAlways() || hostConfig.RestartPolicy.IsOnFailure()) {
		return ErrConflictRestartPolicyAndAutoRemove
	}
	attach := config.AttachStdin || config.AttachStdout || config.AttachStderr
	if attach {
//.........这里部分代码省略.........

func runExec(dockerCli *client.DockerCli, opts *execOptions, container string, execCmd []string) error {
	execConfig, err := parseExec(opts, container, 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()

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

	execID := response.ID
	if execID == "" {
		fmt.Fprintf(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.CheckTtyInput(execConfig.AttachStdin, execConfig.Tty); err != nil {
			return err
		}
	} else {
		execStartCheck := types.ExecStartCheck{
			Detach: execConfig.Detach,
			Tty:    execConfig.Tty,
		}

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

	if execConfig.Tty && dockerCli.IsTerminalIn() {
		if err := dockerCli.MonitorTtySize(ctx, execID, true); err != nil {
			fmt.Fprintf(dockerCli.Err(), "Error monitoring TTY size: %s\n", err)
		}
	}

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

	var status int
	if _, status, err = dockerCli.GetExecExitCode(ctx, execID); err != nil {
		return err
	}

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

	return nil
}