Golang ListOpts.Len方法代码示例

func (c *ClusterCli) resolveFilterParam(flCFilter opts.ListOpts) map[string]string {
	filterMapResult := map[string]string{}
	if flCFilter.Len() <= 0 {
		return filterMapResult
	}
	for _, filter := range flCFilter.GetAll() {
		if index := strings.Index(filter, "="); index > 0 {
			name := strings.TrimSpace(filter[0:index])
			value := strings.TrimSpace(filter[index+1:])
			filterMapResult[name] = value
		} else {
			fmt.Println(fmt.Sprintf("Ignore container filter options: %s", filter))
		}
	}

	return filterMapResult
}

func parseKeyValueOpts(opts opts.ListOpts) ([]KeyValuePair, error) {
	out := make([]KeyValuePair, opts.Len())
	for i, o := range opts.GetAll() {
		k, v, err := parsers.ParseKeyValueOpt(o)
		if err != nil {
			return nil, err
		}
		out[i] = KeyValuePair{Key: k, Value: v}
	}
	return out, nil
}

// CmdRun runs a command in a new container.
//
// Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
func (cli *DockerCli) CmdRun(args ...string) error {
	cmd := cli.Subcmd("run", []string{"IMAGE [COMMAND] [ARG...]"}, "Run a command in a new container", true)

	// These are flags not stored in Config/HostConfig
	var (
		flAutoRemove = cmd.Bool([]string{"-rm"}, false, "Automatically remove the container when it exits")
		flDetach     = cmd.Bool([]string{"d", "-detach"}, false, "Run container in background and print container ID")
		flSigProxy   = cmd.Bool([]string{"-sig-proxy"}, true, "Proxy received signals to the process")
		flName       = cmd.String([]string{"-name"}, "", "Assign a name to the container")
		flAttach     *opts.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, cmd, err := runconfig.Parse(cmd, args)
	// just in case the Parse does not exit
	if err != nil {
		cmd.ReportError(err.Error(), true)
		os.Exit(1)
	}

	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(cli.err, "WARNING: Localhost DNS setting (--dns=%s) may fail in containers.\n", dnsIP)
				break
			}
		}
	}
	if config.Image == "" {
		cmd.Usage()
		return nil
	}

	if !*flDetach {
		if err := cli.CheckTtyInput(config.AttachStdin, config.Tty); err != nil {
			return err
		}
	} else {
		if fl := cmd.Lookup("-attach"); fl != nil {
			flAttach = fl.Value.(*opts.ListOpts)
			if flAttach.Len() != 0 {
				return ErrConflictAttachDetach
			}
		}
		if *flAutoRemove {
			return ErrConflictDetachAutoRemove
		}

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

	// Disable flSigProxy when in TTY mode
	sigProxy := *flSigProxy
	if config.Tty {
		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] = cli.getTtySize()
	}

	createResponse, err := cli.createContainer(config, hostConfig, hostConfig.ContainerIDFile, *flName)
	if err != nil {
		return err
	}
	if sigProxy {
		sigc := cli.forwardAllSignals(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(cli.out, "%s\n", createResponse.ID)
		}()
	}
	if *flAutoRemove && (hostConfig.RestartPolicy.IsAlways() || hostConfig.RestartPolicy.IsOnFailure()) {
		return ErrConflictRestartPolicyAndAutoRemove
	}
	// We need to instantiate the chan because the select needs it. It can
//.........这里部分代码省略.........

func runRun(dockerCli *command.DockerCli, flags *pflag.FlagSet, opts *runOptions, copts *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               = errors.New("Conflicting options: -a and -d")
		ErrConflictRestartPolicyAndAutoRemove = errors.New("Conflicting options: --restart and --rm")
	)

	config, hostConfig, networkingConfig, err := 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.AutoRemove && !hostConfig.RestartPolicy.IsNone() {
		return ErrConflictRestartPolicyAndAutoRemove
	}
	if hostConfig.OomKillDisable != nil && *hostConfig.OomKillDisable && hostConfig.Memory == 0 {
		fmt.Fprintln(stderr, "WARNING: Disabling the OOM killer on containers without setting a '-m/--memory' limit may be dangerous.")
	}

	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.In().CheckTty(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
			}
		}

		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.Out().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 := ForwardAllSignals(ctx, dockerCli, 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.Fprintln(stdout, createResponse.ID)
		}()
	}
	attach := config.AttachStdin || config.AttachStdout || config.AttachStderr
	if attach {
		var (
			out, cerr io.Writer
			in        io.ReadCloser
		)
//.........这里部分代码省略.........

// CmdRun runs a command in a new container.
//
// Usage: docker run [OPTIONS] IMAGE [COMMAND] [ARG...]
func (cli *DockerCli) CmdRun(args ...string) error {
	cmd := Cli.Subcmd("run", []string{"IMAGE [COMMAND] [ARG...]"}, Cli.DockerCommands["run"].Description, true)
	addTrustedFlags(cmd, true)

	// These are flags not stored in Config/HostConfig
	var (
		flAutoRemove = cmd.Bool([]string{"-rm"}, false, "Automatically remove the container when it exits")
		flDetach     = cmd.Bool([]string{"d", "-detach"}, false, "Run container in background and print container ID")
		flSigProxy   = cmd.Bool([]string{"-sig-proxy"}, true, "Proxy received signals to the process")
		flName       = cmd.String([]string{"-name"}, "", "Assign a name to the container")
		flDetachKeys = cmd.String([]string{"-detach-keys"}, "", "Override the key sequence for detaching a container")
		flAttach     *opts.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, cmd, err := runconfig.Parse(cmd, args)
	// just in case the Parse does not exit
	if err != nil {
		cmd.ReportError(err.Error(), true)
		os.Exit(125)
	}

	if hostConfig.OomKillDisable && hostConfig.Memory == 0 {
		fmt.Fprintf(cli.err, "WARNING: Dangerous only disable the OOM Killer on containers but not set the '-m/--memory' option\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(cli.err, "WARNING: Localhost DNS setting (--dns=%s) may fail in containers.\n", dnsIP)
				break
			}
		}
	}
	if config.Image == "" {
		cmd.Usage()
		return nil
	}

	config.ArgsEscaped = false

	if !*flDetach {
		if err := cli.CheckTtyInput(config.AttachStdin, config.Tty); err != nil {
			return err
		}
	} else {
		if fl := cmd.Lookup("-attach"); fl != nil {
			flAttach = fl.Value.(*opts.ListOpts)
			if flAttach.Len() != 0 {
				return ErrConflictAttachDetach
			}
		}
		if *flAutoRemove {
			return ErrConflictDetachAutoRemove
		}

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

	// Disable flSigProxy when in TTY mode
	sigProxy := *flSigProxy
	if config.Tty {
		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] = cli.getTtySize()
	}

	createResponse, err := cli.createContainer(config, hostConfig, hostConfig.ContainerIDFile, *flName)
	if err != nil {
		cmd.ReportError(err.Error(), true)
		return runStartContainerErr(err)
	}
	if sigProxy {
		sigc := cli.forwardAllSignals(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{})
//.........这里部分代码省略.........

func (cli *KraneCli) CmdRun(args ...string) error {
	// FIXME: just use runconfig.Parse already
	cmd := cli.Subcmd("run", "IMAGE [COMMAND] [ARG...]", "Run a command in a new container")

	// These are flags not stored in Config/HostConfig
	var (
		flAutoRemove = cmd.Bool([]string{"#rm", "-rm"}, false, "Automatically remove the container when it exits (incompatible with -d)")
		flDetach     = cmd.Bool([]string{"d", "-detach"}, false, "Detached mode: run the container in the background and print the new container ID")
		flSigProxy   = cmd.Bool([]string{"#sig-proxy", "-sig-proxy"}, true, "Proxy received signals to the process (even in non-TTY mode). SIGCHLD, SIGSTOP, and SIGKILL are not proxied.")
		flName       = cmd.String([]string{"#name", "-name"}, "", "Assign a name to the container")
		flShip       = cmd.String([]string{"ship", "-ship"}, "", "Ship name to deploy at")
		flAttach     *opts.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, cmd, err := runconfig.Parse(cmd, args, nil)
	if err != nil {
		return err
	}
	if config.Image == "" || *flShip == "" {
		cmd.Usage()
		return nil
	}

	if *flDetach {
		if fl := cmd.Lookup("attach"); fl != nil {
			flAttach = fl.Value.(*opts.ListOpts)
			if flAttach.Len() != 0 {
				return ErrConflictAttachDetach
			}
		}
		if *flAutoRemove {
			return ErrConflictDetachAutoRemove
		}

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

	// Disable flSigProxy when in TTY mode
	sigProxy := *flSigProxy
	if config.Tty {
		sigProxy = false
	}

	runResult, err := cli.createContainer(config, hostConfig, hostConfig.ContainerIDFile, *flName, *flShip)
	if err != nil {
		return err
	}

	if sigProxy {
		sigc := cli.forwardAllSignals(runResult.Get("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(cli.out, "%s\n", runResult.Get("Id"))
		}()
	}

	if *flAutoRemove && (hostConfig.RestartPolicy.Name == "always" || hostConfig.RestartPolicy.Name == "on-failure") {
		return ErrConflictRestartPolicyAndAutoRemove
	}

	// We need to instantiate the chan because the select needs it. It can
	// be closed but can't be uninitialized.
	hijacked := make(chan io.Closer)

	// Block the return until the chan gets closed
	defer func() {
		log.Debugf("End of CmdRun(), Waiting for hijack to finish.")
		if _, ok := <-hijacked; ok {
			log.Errorf("Hijack did not finish (chan still open)")
		}
	}()

	if config.AttachStdin || config.AttachStdout || config.AttachStderr {
		var (
			out, stderr io.Writer
			in          io.ReadCloser
			v           = url.Values{}
		)
		v.Set("stream", "1")

		if config.AttachStdin {
			v.Set("stdin", "1")
//.........这里部分代码省略.........