Golang cli.RequiresMinArgs函数代码示例

func newPsCommand(dockerCli *command.DockerCli) *cobra.Command {
	opts := psOptions{filter: opts.NewFilterOpt()}

	cmd := &cobra.Command{
		Use:   "ps [OPTIONS] [NODE...]",
		Short: "List tasks running on one or more nodes, defaults to current node",
		Args:  cli.RequiresMinArgs(0),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.nodeIDs = []string{"self"}

			if len(args) != 0 {
				opts.nodeIDs = args
			}

			return runPs(dockerCli, opts)
		},
	}
	flags := cmd.Flags()
	flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate output")
	flags.BoolVar(&opts.noResolve, "no-resolve", false, "Do not map IDs to Names")
	flags.VarP(&opts.filter, "filter", "f", "Filter output based on conditions provided")
	flags.BoolVarP(&opts.all, "all", "a", false, "Show all tasks (default shows tasks that are or will be running)")

	return cmd
}

// NewExecCommand creats a new cobra.Command for `docker exec`
func NewExecCommand(dockerCli *client.DockerCli) *cobra.Command {
	var opts execOptions

	cmd := &cobra.Command{
		Use:   "exec [OPTIONS] CONTAINER COMMAND [ARG...]",
		Short: "Run a command in a running container",
		Args:  cli.RequiresMinArgs(2),
		RunE: func(cmd *cobra.Command, args []string) error {
			container := args[0]
			execCmd := args[1:]
			return runExec(dockerCli, &opts, container, execCmd)
		},
	}

	flags := cmd.Flags()
	flags.SetInterspersed(false)

	flags.StringVarP(&opts.detachKeys, "detach-keys", "", "", "Override the key sequence for detaching a container")
	flags.BoolVarP(&opts.interactive, "interactive", "i", false, "Keep STDIN open even if not attached")
	flags.BoolVarP(&opts.tty, "tty", "t", false, "Allocate a pseudo-TTY")
	flags.BoolVarP(&opts.detach, "detach", "d", false, "Detached mode: run command in the background")
	flags.StringVarP(&opts.user, "user", "u", "", "Username or UID (format: <name|uid>[:<group|gid>])")
	flags.BoolVarP(&opts.privileged, "privileged", "", false, "Give extended privileges to the command")

	return cmd
}

// NewStartCommand creates a new cobra.Command for `docker start`
func NewStartCommand(dockerCli *command.DockerCli) *cobra.Command {
	var opts startOptions

	cmd := &cobra.Command{
		Use:   "start [OPTIONS] CONTAINER [CONTAINER...]",
		Short: "Start one or more stopped containers",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.containers = args
			return runStart(dockerCli, &opts)
		},
	}

	flags := cmd.Flags()
	flags.BoolVarP(&opts.attach, "attach", "a", false, "Attach STDOUT/STDERR and forward signals")
	flags.BoolVarP(&opts.openStdin, "interactive", "i", false, "Attach container's STDIN")
	flags.StringVar(&opts.detachKeys, "detach-keys", "", "Override the key sequence for detaching a container")

	if dockerCli.HasExperimental() {
		flags.StringVar(&opts.checkpoint, "checkpoint", "", "Restore from this checkpoint")
		flags.StringVar(&opts.checkpointDir, "checkpoint-dir", "", "Use a custom checkpoint storage directory")
	}

	return cmd
}

// NewRunCommand create a new `docker run` command
func NewRunCommand(dockerCli *command.DockerCli) *cobra.Command {
	var opts runOptions
	var copts *containerOptions

	cmd := &cobra.Command{
		Use:   "run [OPTIONS] IMAGE [COMMAND] [ARG...]",
		Short: "Run a command in a new container",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			copts.Image = args[0]
			if len(args) > 1 {
				copts.Args = args[1:]
			}
			return runRun(dockerCli, cmd.Flags(), &opts, copts)
		},
	}

	flags := cmd.Flags()
	flags.SetInterspersed(false)

	// These are flags not stored in Config/HostConfig
	flags.BoolVarP(&opts.detach, "detach", "d", false, "Run container in background and print container ID")
	flags.BoolVar(&opts.sigProxy, "sig-proxy", true, "Proxy received signals to the process")
	flags.StringVar(&opts.name, "name", "", "Assign a name to the container")
	flags.StringVar(&opts.detachKeys, "detach-keys", "", "Override the key sequence for detaching a container")

	// Add an explicit help that doesn't have a `-h` to prevent the conflict
	// with hostname
	flags.Bool("help", false, "Print usage")

	command.AddTrustedFlags(flags, true)
	copts = addFlags(flags)
	return cmd
}

func newCreateCommand(dockerCli *command.DockerCli) *cobra.Command {
	opts := newServiceOptions()

	cmd := &cobra.Command{
		Use:   "create [OPTIONS] IMAGE [COMMAND] [ARG...]",
		Short: "Create a new service",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.image = args[0]
			if len(args) > 1 {
				opts.args = args[1:]
			}
			return runCreate(dockerCli, opts)
		},
	}
	flags := cmd.Flags()
	flags.StringVar(&opts.mode, flagMode, "replicated", "Service mode (replicated or global)")
	flags.StringVar(&opts.name, flagName, "", "Service name")

	addServiceFlags(cmd, opts)

	flags.VarP(&opts.labels, flagLabel, "l", "Service labels")
	flags.Var(&opts.containerLabels, flagContainerLabel, "Container labels")
	flags.VarP(&opts.env, flagEnv, "e", "Set environment variables")
	flags.Var(&opts.envFile, flagEnvFile, "Read in a file of environment variables")
	flags.Var(&opts.mounts, flagMount, "Attach a mount to the service")
	flags.StringSliceVar(&opts.constraints, flagConstraint, []string{}, "Placement constraints")
	flags.StringSliceVar(&opts.networks, flagNetwork, []string{}, "Network attachments")
	flags.VarP(&opts.endpoint.ports, flagPublish, "p", "Publish a port as a node port")
	flags.StringSliceVar(&opts.groups, flagGroup, []string{}, "Set one or more supplementary user groups for the container")

	flags.SetInterspersed(false)
	return cmd
}

// NewUpdateCommand creates a new cobra.Command for `docker update`
func NewUpdateCommand(dockerCli *command.DockerCli) *cobra.Command {
	var opts updateOptions

	cmd := &cobra.Command{
		Use:   "update [OPTIONS] CONTAINER [CONTAINER...]",
		Short: "Update configuration of one or more containers",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.containers = args
			opts.nFlag = cmd.Flags().NFlag()
			return runUpdate(dockerCli, &opts)
		},
	}

	flags := cmd.Flags()
	flags.Uint16Var(&opts.blkioWeight, "blkio-weight", 0, "Block IO (relative weight), between 10 and 1000")
	flags.Int64Var(&opts.cpuPeriod, "cpu-period", 0, "Limit CPU CFS (Completely Fair Scheduler) period")
	flags.Int64Var(&opts.cpuQuota, "cpu-quota", 0, "Limit CPU CFS (Completely Fair Scheduler) quota")
	flags.StringVar(&opts.cpusetCpus, "cpuset-cpus", "", "CPUs in which to allow execution (0-3, 0,1)")
	flags.StringVar(&opts.cpusetMems, "cpuset-mems", "", "MEMs in which to allow execution (0-3, 0,1)")
	flags.Int64VarP(&opts.cpuShares, "cpu-shares", "c", 0, "CPU shares (relative weight)")
	flags.StringVarP(&opts.memoryString, "memory", "m", "", "Memory limit")
	flags.StringVar(&opts.memoryReservation, "memory-reservation", "", "Memory soft limit")
	flags.StringVar(&opts.memorySwap, "memory-swap", "", "Swap limit equal to memory plus swap: '-1' to enable unlimited swap")
	flags.StringVar(&opts.kernelMemory, "kernel-memory", "", "Kernel memory limit")
	flags.StringVar(&opts.restartPolicy, "restart", "", "Restart policy to apply when a container exits")

	return cmd
}

func newAcceptCommand(dockerCli *client.DockerCli) *cobra.Command {
	return &cobra.Command{
		Use:   "accept NODE [NODE...]",
		Short: "Accept a node in the swarm",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			return runAccept(dockerCli, args)
		},
	}
}

func newPromoteCommand(dockerCli *client.DockerCli) *cobra.Command {
	return &cobra.Command{
		Use:   "promote NODE [NODE...]",
		Short: "Promote a node to a manager in the swarm",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			return runPromote(dockerCli, args)
		},
	}
}

func newDemoteCommand(dockerCli *client.DockerCli) *cobra.Command {
	return &cobra.Command{
		Use:   "demote NODE [NODE...]",
		Short: "Demote one or more nodes from manager in the swarm",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			return runDemote(dockerCli, args)
		},
	}
}

func newRemoveCommand(dockerCli *client.DockerCli) *cobra.Command {
	return &cobra.Command{
		Use:     "rm NODE [NODE...]",
		Aliases: []string{"remove"},
		Short:   "Remove one or more nodes from the swarm",
		Args:    cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			return runRemove(dockerCli, args)
		},
	}
}

func newSetCommand(dockerCli *client.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "set PLUGIN key1=value1 [key2=value2...]",
		Short: "Change settings for a plugin",
		Args:  cli.RequiresMinArgs(2),
		RunE: func(cmd *cobra.Command, args []string) error {
			return runSet(dockerCli, args[0], args[1:])
		},
	}

	return cmd
}

func newSetCommand(dockerCli *command.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:   "set PLUGIN KEY=VALUE [KEY=VALUE...]",
		Short: "Change settings for a plugin",
		Args:  cli.RequiresMinArgs(2),
		RunE: func(cmd *cobra.Command, args []string) error {
			return dockerCli.Client().PluginSet(context.Background(), args[0], args[1:])
		},
	}

	return cmd
}

func newSecretRemoveCommand(dockerCli *command.DockerCli) *cobra.Command {
	return &cobra.Command{
		Use:   "rm [id]",
		Short: "Remove a secret",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts := removeOptions{
				ids: args,
			}
			return runSecretRemove(dockerCli, opts)
		},
	}
}

func newRemoveCommand(dockerCli *client.DockerCli) *cobra.Command {
	cmd := &cobra.Command{
		Use:     "rm PLUGIN",
		Short:   "Remove a plugin",
		Aliases: []string{"remove"},
		Args:    cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			return runRemove(dockerCli, args)
		},
	}

	return cmd
}

// NewWaitCommand creates a new cobra.Command for `docker wait`
func NewWaitCommand(dockerCli *command.DockerCli) *cobra.Command {
	var opts waitOptions

	cmd := &cobra.Command{
		Use:   "wait CONTAINER [CONTAINER...]",
		Short: "Block until one or more containers stop, then print their exit codes",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.containers = args
			return runWait(dockerCli, &opts)
		},
	}
	return cmd
}