Unexport system commands

This patch deprecates exported system commands and moves the
implementation details to an unexported function.

Commands that are affected include:

- system.NewVersionCommand
- system.NewInfoCommand
- system.NewSystemCommand
- system.NewEventsCommand
- system.NewInspectCommand

Signed-off-by: Alano Terblanche <18033717+Benehiko@users.noreply.github.com>

cli/command/commands/commands.go

@@ -46,7 +46,9 @@ func AddCommands(cmd *cobra.Command, dockerCli command.Cli) {
 		registry.NewLoginCommand(dockerCli),
 		registry.NewLogoutCommand(dockerCli),
 		registry.NewSearchCommand(dockerCli),
+		//nolint:staticcheck // TODO: Remove when migration to cli/internal/commands.Register is complete. (see #6283)
 		system.NewVersionCommand(dockerCli),
+		//nolint:staticcheck // TODO: Remove when migration to cli/internal/commands.Register is complete. (see #6283)
 		system.NewInfoCommand(dockerCli),
 
 		// management commands
@@ -64,6 +66,7 @@ func AddCommands(cmd *cobra.Command, dockerCli command.Cli) {
 		manifest.NewManifestCommand(dockerCli),
 		network.NewNetworkCommand(dockerCli),
 		plugin.NewPluginCommand(dockerCli),
+		//nolint:staticcheck // TODO: Remove when migration to cli/internal/commands.Register is complete. (see #6283)
 		system.NewSystemCommand(dockerCli),
 		trust.NewTrustCommand(dockerCli),
 		volume.NewVolumeCommand(dockerCli),
@@ -130,7 +133,9 @@ func AddCommands(cmd *cobra.Command, dockerCli command.Cli) {
 		hide(image.NewSaveCommand(dockerCli)),
 		//nolint:staticcheck // TODO: Remove when migration to cli/internal/commands.Register is complete. (see #6283)
 		hide(image.NewTagCommand(dockerCli)),
+		//nolint:staticcheck // TODO: Remove when migration to cli/internal/commands.Register is complete. (see #6283)
 		hide(system.NewEventsCommand(dockerCli)),
+		//nolint:staticcheck // TODO: Remove when migration to cli/internal/commands.Register is complete. (see #6283)
 		hide(system.NewInspectCommand(dockerCli)),
 	)
 }

cli/command/system/cmd.go

@@ -7,19 +7,26 @@ import (
 )
 
 // NewSystemCommand returns a cobra command for `system` subcommands
-func NewSystemCommand(dockerCli command.Cli) *cobra.Command {
+//
+// Deprecated: Do not import commands directly. They will be removed in a future release.
+func NewSystemCommand(dockerCLI command.Cli) *cobra.Command {
+	return newSystemCommand(dockerCLI)
+}
+
+// newSystemCommand returns a cobra command for `system` subcommands
+func newSystemCommand(dockerCLI command.Cli) *cobra.Command {
 	cmd := &cobra.Command{
 		Use:   "system",
 		Short: "Manage Docker",
 		Args:  cli.NoArgs,
-		RunE:  command.ShowHelp(dockerCli.Err()),
+		RunE:  command.ShowHelp(dockerCLI.Err()),
 	}
 	cmd.AddCommand(
-		NewEventsCommand(dockerCli),
-		NewInfoCommand(dockerCli),
-		newDiskUsageCommand(dockerCli),
-		newPruneCommand(dockerCli),
-		newDialStdioCommand(dockerCli),
+		newEventsCommand(dockerCLI),
+		newInfoCommand(dockerCLI),
+		newDiskUsageCommand(dockerCLI),
+		newPruneCommand(dockerCLI),
+		newDialStdioCommand(dockerCLI),
 	)
 
 	return cmd

cli/command/system/completion_test.go

@@ -156,7 +156,7 @@ func TestCompleteEventFilter(t *testing.T) {
 	for _, tc := range tests {
 		cli := test.NewFakeCli(tc.client)
 
-		completions, directive := completeEventFilters(cli)(NewEventsCommand(cli), nil, tc.toComplete)
+		completions, directive := completeEventFilters(cli)(newEventsCommand(cli), nil, tc.toComplete)
 
 		assert.DeepEqual(t, completions, tc.expected)
 		assert.Equal(t, directive, cobra.ShellCompDirectiveNoFileComp, fmt.Sprintf("wrong directive in completion for '%s'", tc.toComplete))

cli/command/system/events.go

@@ -28,7 +28,14 @@ type eventsOptions struct {
 }
 
 // NewEventsCommand creates a new cobra.Command for `docker events`
-func NewEventsCommand(dockerCli command.Cli) *cobra.Command {
+//
+// Deprecated: Do not import commands directly. They will be removed in a future release.
+func NewEventsCommand(dockerCLI command.Cli) *cobra.Command {
+	return newEventsCommand(dockerCLI)
+}
+
+// newEventsCommand creates a new cobra.Command for `docker events`
+func newEventsCommand(dockerCLI command.Cli) *cobra.Command {
 	options := eventsOptions{filter: opts.NewFilterOpt()}
 
 	cmd := &cobra.Command{
@@ -36,7 +43,7 @@ func NewEventsCommand(dockerCli command.Cli) *cobra.Command {
 		Short: "Get real time events from the server",
 		Args:  cli.NoArgs,
 		RunE: func(cmd *cobra.Command, args []string) error {
-			return runEvents(cmd.Context(), dockerCli, &options)
+			return runEvents(cmd.Context(), dockerCLI, &options)
 		},
 		Annotations: map[string]string{
 			"aliases": "docker system events, docker events",
@@ -50,7 +57,7 @@ func NewEventsCommand(dockerCli command.Cli) *cobra.Command {
 	flags.VarP(&options.filter, "filter", "f", "Filter output based on conditions provided")
 	flags.StringVar(&options.format, "format", "", flagsHelper.InspectFormatHelp) // using the same flag description as "inspect" commands for now.
 
-	_ = cmd.RegisterFlagCompletionFunc("filter", completeEventFilters(dockerCli))
+	_ = cmd.RegisterFlagCompletionFunc("filter", completeEventFilters(dockerCLI))
 
 	return cmd
 }

cli/command/system/events_test.go

@@ -70,7 +70,7 @@ func TestEventsFormat(t *testing.T) {
 				}()
 				return messages, errs
 			}})
-			cmd := NewEventsCommand(cli)
+			cmd := newEventsCommand(cli)
 			cmd.SetArgs(tc.args)
 			cmd.SetOut(io.Discard)
 			cmd.SetErr(io.Discard)

cli/command/system/info.go

@@ -60,7 +60,14 @@ func (i *dockerInfo) clientPlatform() string {
 }
 
 // NewInfoCommand creates a new cobra.Command for `docker info`
-func NewInfoCommand(dockerCli command.Cli) *cobra.Command {
+//
+// Deprecated: Do not import commands directly. They will be removed in a future release.
+func NewInfoCommand(dockerCLI command.Cli) *cobra.Command {
+	return newInfoCommand(dockerCLI)
+}
+
+// newInfoCommand creates a new cobra.Command for `docker info`
+func newInfoCommand(dockerCLI command.Cli) *cobra.Command {
 	var opts infoOptions
 
 	cmd := &cobra.Command{
@@ -68,7 +75,7 @@ func NewInfoCommand(dockerCli command.Cli) *cobra.Command {
 		Short: "Display system-wide information",
 		Args:  cli.NoArgs,
 		RunE: func(cmd *cobra.Command, args []string) error {
-			return runInfo(cmd.Context(), cmd, dockerCli, &opts)
+			return runInfo(cmd.Context(), cmd, dockerCLI, &opts)
 		},
 		Annotations: map[string]string{
 			"category-top": "12",

cli/command/system/inspect.go

@@ -60,7 +60,14 @@ type inspectOptions struct {
 }
 
 // NewInspectCommand creates a new cobra.Command for `docker inspect`
-func NewInspectCommand(dockerCli command.Cli) *cobra.Command {
+//
+// Deprecated: Do not import commands directly. They will be removed in a future release.
+func NewInspectCommand(dockerCLI command.Cli) *cobra.Command {
+	return newInspectCommand(dockerCLI)
+}
+
+// newInspectCommand creates a new cobra.Command for `docker inspect`
+func newInspectCommand(dockerCLI command.Cli) *cobra.Command {
 	var opts inspectOptions
 
 	cmd := &cobra.Command{
@@ -72,7 +79,7 @@ func NewInspectCommand(dockerCli command.Cli) *cobra.Command {
 			if cmd.Flags().Changed("type") && opts.objectType == "" {
 				return fmt.Errorf(`type is empty: must be one of "%s"`, strings.Join(allTypes, `", "`))
 			}
-			return runInspect(cmd.Context(), dockerCli, opts)
+			return runInspect(cmd.Context(), dockerCLI, opts)
 		},
 		// TODO(thaJeztah): should we consider adding completion for common object-types? (images, containers?)
 		ValidArgsFunction: completion.NoComplete,

cli/command/system/inspect_test.go

@@ -32,7 +32,7 @@ func TestInspectValidateFlagsAndArgs(t *testing.T) {
 		},
 	} {
 		t.Run(tc.name, func(t *testing.T) {
-			cmd := NewInspectCommand(test.NewFakeCli(&fakeClient{}))
+			cmd := newInspectCommand(test.NewFakeCli(&fakeClient{}))
 			cmd.SetOut(io.Discard)
 			cmd.SetErr(io.Discard)
 			cmd.SetArgs(tc.args)

cli/command/system/version.go

@@ -109,7 +109,14 @@ func newClientVersion(contextName string, dockerCli command.Cli) clientVersion {
 }
 
 // NewVersionCommand creates a new cobra.Command for `docker version`
-func NewVersionCommand(dockerCli command.Cli) *cobra.Command {
+//
+// Deprecated: Do not import commands directly. They will be removed in a future release.
+func NewVersionCommand(dockerCLI command.Cli) *cobra.Command {
+	return newVersionCommand(dockerCLI)
+}
+
+// newVersionCommand creates a new cobra.Command for `docker version`
+func newVersionCommand(dockerCLI command.Cli) *cobra.Command {
 	var opts versionOptions
 
 	cmd := &cobra.Command{
@@ -117,7 +124,7 @@ func NewVersionCommand(dockerCli command.Cli) *cobra.Command {
 		Short: "Show the Docker version information",
 		Args:  cli.NoArgs,
 		RunE: func(cmd *cobra.Command, args []string) error {
-			return runVersion(cmd.Context(), dockerCli, &opts)
+			return runVersion(cmd.Context(), dockerCLI, &opts)
 		},
 		Annotations: map[string]string{
 			"category-top": "10",

cli/command/system/version_test.go

@@ -20,7 +20,7 @@ func TestVersionWithoutServer(t *testing.T) {
 			return types.Version{}, errors.New("no server")
 		},
 	})
-	cmd := NewVersionCommand(cli)
+	cmd := newVersionCommand(cli)
 	cmd.SetArgs([]string{})
 	cmd.SetOut(cli.Err())
 	cmd.SetErr(io.Discard)