Make experimental a runtime flag

Signed-off-by: Kenfe-Mickael Laventure <mickael.laventure@gmail.com>

command/bundlefile/bundlefile.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package bundlefile
 
 import (

command/bundlefile/bundlefile_test.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package bundlefile
 
 import (

command/checkpoint/cmd.go

@@ -1,13 +1,27 @@
-// +build !experimental
-
 package checkpoint
 
 import (
+	"fmt"
+
+	"github.com/docker/docker/cli"
 	"github.com/docker/docker/cli/command"
 	"github.com/spf13/cobra"
 )
 
 // NewCheckpointCommand returns the `checkpoint` subcommand (only in experimental)
 func NewCheckpointCommand(dockerCli *command.DockerCli) *cobra.Command {
-	return &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
 }

command/checkpoint/cmd_experimental.go

@@ -1,30 +0,0 @@
-// +build experimental
-
-package checkpoint
-
-import (
-	"fmt"
-
-	"github.com/spf13/cobra"
-
-	"github.com/docker/docker/cli"
-	"github.com/docker/docker/cli/command"
-)
-
-// 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
-}

command/checkpoint/create.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package checkpoint
 
 import (

command/checkpoint/list.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package checkpoint
 
 import (

command/checkpoint/remove.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package checkpoint
 
 import (

command/cli.go

@@ -19,6 +19,7 @@ import (
 	dopts "github.com/docker/docker/opts"
 	"github.com/docker/go-connections/sockets"
 	"github.com/docker/go-connections/tlsconfig"
+	"golang.org/x/net/context"
 )
 
 // Streams is an interface which exposes the standard input and output streams
@@ -37,6 +38,21 @@ type DockerCli struct {
 	err             io.Writer
 	keyFile         string
 	client          client.APIClient
+	hasExperimental *bool
+}
+
+// HasExperimental returns true if experimental features are accessible
+func (cli *DockerCli) HasExperimental() bool {
+	if cli.hasExperimental == nil {
+		if cli.client == nil {
+			cli.Initialize(cliflags.NewClientOptions())
+		}
+		enabled := false
+		cli.hasExperimental = &enabled
+		enabled, _ = cli.client.Ping(context.Background())
+	}
+
+	return *cli.hasExperimental
 }
 
 // Client returns the APIClient

command/commands/commands.go

@@ -24,8 +24,6 @@ func AddCommands(cmd *cobra.Command, dockerCli *command.DockerCli) {
 	cmd.AddCommand(
 		node.NewNodeCommand(dockerCli),
 		service.NewServiceCommand(dockerCli),
-		stack.NewStackCommand(dockerCli),
-		stack.NewTopLevelDeployCommand(dockerCli),
 		swarm.NewSwarmCommand(dockerCli),
 		container.NewContainerCommand(dockerCli),
 		image.NewImageCommand(dockerCli),
@@ -72,9 +70,17 @@ func AddCommands(cmd *cobra.Command, dockerCli *command.DockerCli) {
 		hide(image.NewSaveCommand(dockerCli)),
 		hide(image.NewTagCommand(dockerCli)),
 		hide(system.NewInspectCommand(dockerCli)),
+	)
+
+	if dockerCli.HasExperimental() {
+		cmd.AddCommand(
+			stack.NewStackCommand(dockerCli),
+			stack.NewTopLevelDeployCommand(dockerCli),
 			checkpoint.NewCheckpointCommand(dockerCli),
 			plugin.NewPluginCommand(dockerCli),
 		)
+	}
+
 }
 
 func hide(cmd *cobra.Command) *cobra.Command {

command/container/start.go

@@ -44,7 +44,9 @@ func NewStartCommand(dockerCli *command.DockerCli) *cobra.Command {
 	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")
 
-	addExperimentalStartFlags(flags, &opts)
+	if dockerCli.HasExperimental() {
+		flags.StringVar(&opts.checkpoint, "checkpoint", "", "Restore from this checkpoint")
+	}
 
 	return cmd
 }

command/container/start_utils.go

@@ -1,8 +0,0 @@
-// +build !experimental
-
-package container
-
-import "github.com/spf13/pflag"
-
-func addExperimentalStartFlags(flags *pflag.FlagSet, opts *startOptions) {
-}

command/container/start_utils_experimental.go

@@ -1,9 +0,0 @@
-// +build experimental
-
-package container
-
-import "github.com/spf13/pflag"
-
-func addExperimentalStartFlags(flags *pflag.FlagSet, opts *startOptions) {
-	flags.StringVar(&opts.checkpoint, "checkpoint", "", "Restore from this checkpoint")
-}

command/plugin/cmd.go

@@ -1,13 +1,33 @@
-// +build !experimental
-
 package plugin
 
 import (
+	"fmt"
+
+	"github.com/docker/docker/cli"
 	"github.com/docker/docker/cli/command"
 	"github.com/spf13/cobra"
 )
 
 // NewPluginCommand returns a cobra command for `plugin` subcommands
 func NewPluginCommand(dockerCli *command.DockerCli) *cobra.Command {
-	return &cobra.Command{}
+	cmd := &cobra.Command{
+		Use:   "plugin",
+		Short: "Manage plugins",
+		Args:  cli.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
+		},
+	}
+
+	cmd.AddCommand(
+		newDisableCommand(dockerCli),
+		newEnableCommand(dockerCli),
+		newInspectCommand(dockerCli),
+		newInstallCommand(dockerCli),
+		newListCommand(dockerCli),
+		newRemoveCommand(dockerCli),
+		newSetCommand(dockerCli),
+		newPushCommand(dockerCli),
+	)
+	return cmd
 }

command/plugin/cmd_experimental.go

@@ -1,35 +0,0 @@
-// +build experimental
-
-package plugin
-
-import (
-	"fmt"
-
-	"github.com/docker/docker/cli"
-	"github.com/docker/docker/cli/command"
-	"github.com/spf13/cobra"
-)
-
-// NewPluginCommand returns a cobra command for `plugin` subcommands
-func NewPluginCommand(dockerCli *command.DockerCli) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "plugin",
-		Short: "Manage plugins",
-		Args:  cli.NoArgs,
-		Run: func(cmd *cobra.Command, args []string) {
-			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
-		},
-	}
-
-	cmd.AddCommand(
-		newDisableCommand(dockerCli),
-		newEnableCommand(dockerCli),
-		newInspectCommand(dockerCli),
-		newInstallCommand(dockerCli),
-		newListCommand(dockerCli),
-		newRemoveCommand(dockerCli),
-		newSetCommand(dockerCli),
-		newPushCommand(dockerCli),
-	)
-	return cmd
-}

command/plugin/disable.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/enable.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/inspect.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/install.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/list.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/push.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/remove.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/plugin/set.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package plugin
 
 import (

command/stack/cmd.go

@@ -1,18 +1,38 @@
-// +build !experimental
-
 package stack
 
 import (
+	"fmt"
+
+	"github.com/docker/docker/cli"
 	"github.com/docker/docker/cli/command"
 	"github.com/spf13/cobra"
 )
 
-// NewStackCommand returns no command
+// NewStackCommand returns a cobra command for `stack` subcommands
 func NewStackCommand(dockerCli *command.DockerCli) *cobra.Command {
-	return &cobra.Command{}
+	cmd := &cobra.Command{
+		Use:   "stack",
+		Short: "Manage Docker stacks",
+		Args:  cli.NoArgs,
+		Run: func(cmd *cobra.Command, args []string) {
+			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
+		},
+	}
+	cmd.AddCommand(
+		newConfigCommand(dockerCli),
+		newDeployCommand(dockerCli),
+		newListCommand(dockerCli),
+		newRemoveCommand(dockerCli),
+		newServicesCommand(dockerCli),
+		newPsCommand(dockerCli),
+	)
+	return cmd
 }
 
-// NewTopLevelDeployCommand returns no command
+// NewTopLevelDeployCommand returns a command for `docker deploy`
 func NewTopLevelDeployCommand(dockerCli *command.DockerCli) *cobra.Command {
-	return &cobra.Command{}
+	cmd := newDeployCommand(dockerCli)
+	// Remove the aliases at the top level
+	cmd.Aliases = []string{}
+	return cmd
 }

command/stack/cmd_experimental.go

@@ -1,40 +0,0 @@
-// +build experimental
-
-package stack
-
-import (
-	"fmt"
-
-	"github.com/docker/docker/cli"
-	"github.com/docker/docker/cli/command"
-	"github.com/spf13/cobra"
-)
-
-// NewStackCommand returns a cobra command for `stack` subcommands
-func NewStackCommand(dockerCli *command.DockerCli) *cobra.Command {
-	cmd := &cobra.Command{
-		Use:   "stack",
-		Short: "Manage Docker stacks",
-		Args:  cli.NoArgs,
-		Run: func(cmd *cobra.Command, args []string) {
-			fmt.Fprintf(dockerCli.Err(), "\n"+cmd.UsageString())
-		},
-	}
-	cmd.AddCommand(
-		newConfigCommand(dockerCli),
-		newDeployCommand(dockerCli),
-		newListCommand(dockerCli),
-		newRemoveCommand(dockerCli),
-		newServicesCommand(dockerCli),
-		newPsCommand(dockerCli),
-	)
-	return cmd
-}
-
-// NewTopLevelDeployCommand returns a command for `docker deploy`
-func NewTopLevelDeployCommand(dockerCli *command.DockerCli) *cobra.Command {
-	cmd := newDeployCommand(dockerCli)
-	// Remove the aliases at the top level
-	cmd.Aliases = []string{}
-	return cmd
-}

command/stack/common.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/config.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/deploy.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/list.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/opts.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/ps.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/remove.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/stack/services.go

@@ -1,5 +1,3 @@
-// +build experimental
-
 package stack
 
 import (

command/system/info.go

@@ -225,7 +225,7 @@ func prettyPrintInfo(dockerCli *command.DockerCli, info types.Info) error {
 		}
 	}
 
-	ioutils.FprintfIfTrue(dockerCli.Out(), "Experimental: %v\n", info.ExperimentalBuild)
+	fmt.Fprintf(dockerCli.Out(), "Experimental: %v\n", info.ExperimentalBuild)
 	if info.ClusterStore != "" {
 		fmt.Fprintf(dockerCli.Out(), "Cluster Store: %s\n", info.ClusterStore)
 	}

command/system/version.go

@@ -10,7 +10,6 @@ import (
 	"github.com/docker/docker/cli"
 	"github.com/docker/docker/cli/command"
 	"github.com/docker/docker/dockerversion"
-	"github.com/docker/docker/utils"
 	"github.com/docker/docker/utils/templates"
 	"github.com/spf13/cobra"
 )
@@ -21,8 +20,7 @@ var versionTemplate = `Client:
  Go version:   {{.Client.GoVersion}}
  Git commit:   {{.Client.GitCommit}}
  Built:        {{.Client.BuildTime}}
- OS/Arch:      {{.Client.Os}}/{{.Client.Arch}}{{if .Client.Experimental}}
+ OS/Arch:      {{.Client.Os}}/{{.Client.Arch}}{{if .ServerOK}}
- Experimental: {{.Client.Experimental}}{{end}}{{if .ServerOK}}
 
 Server:
  Version:      {{.Server.Version}}
@@ -30,8 +28,8 @@ Server:
  Go version:   {{.Server.GoVersion}}
  Git commit:   {{.Server.GitCommit}}
  Built:        {{.Server.BuildTime}}
- OS/Arch:      {{.Server.Os}}/{{.Server.Arch}}{{if .Server.Experimental}}
+ OS/Arch:      {{.Server.Os}}/{{.Server.Arch}}
- Experimental: {{.Server.Experimental}}{{end}}{{end}}`
+ Experimental: {{.Server.Experimental}}{{end}}`
 
 type versionOptions struct {
 	format string
@@ -80,7 +78,6 @@ func runVersion(dockerCli *command.DockerCli, opts *versionOptions) error {
 			BuildTime:  dockerversion.BuildTime,
 			Os:         runtime.GOOS,
 			Arch:       runtime.GOARCH,
-			Experimental: utils.ExperimentalBuild(),
 		},
 	}