Set a global orchestrator flag

Signed-off-by: Vincent Demeester <vincent@sbr.pm>

cli/command/cli.go

@@ -136,11 +136,12 @@ func (cli *DockerCli) Initialize(opts *cliflags.ClientOptions) error {
 	if err != nil {
 		return errors.Wrap(err, "Experimental field")
 	}
-	orchestrator := GetOrchestrator(cli.configFile.Orchestrator)
+	orchestrator := GetOrchestrator(opts.Common.Orchestrator, cli.configFile.Orchestrator)
 	cli.clientInfo = ClientInfo{
 		DefaultVersion:  cli.client.ClientVersion(),
 		HasExperimental: hasExperimental,
 		HasKubernetes:   orchestrator == OrchestratorKubernetes,
+		Orchestrator:    orchestrator,
 	}
 	cli.initializeFromClient()
 	return nil
@@ -207,6 +208,7 @@ type ClientInfo struct {
 	HasExperimental bool
 	HasKubernetes   bool
 	DefaultVersion  string
+	Orchestrator    Orchestrator
 }
 
 // NewDockerCli returns a DockerCli instance with IO output and error streams set by in, out and err.

cli/command/orchestrator.go

@@ -33,19 +33,23 @@ func normalize(flag string) Orchestrator {
 
 // GetOrchestrator checks DOCKER_ORCHESTRATOR environment variable and configuration file
 // orchestrator value and returns user defined Orchestrator.
-func GetOrchestrator(orchestrator string) Orchestrator {
+func GetOrchestrator(flagValue, value string) Orchestrator {
+	// Check flag
+	if o := normalize(flagValue); o != orchestratorUnset {
+		return o
+	}
 	// Check environment variable
 	env := os.Getenv(dockerOrchestrator)
 	if o := normalize(env); o != orchestratorUnset {
 		return o
 	}
 	// Check specified orchestrator
-	if o := normalize(orchestrator); o != orchestratorUnset {
+	if o := normalize(value); o != orchestratorUnset {
 		return o
 	}
 
-	if orchestrator != "" {
-		fmt.Fprintf(os.Stderr, "Specified orchestrator %q is invalid. Please use either kubernetes or swarm\n", orchestrator)
+	if value != "" {
+		fmt.Fprintf(os.Stderr, "Specified orchestrator %q is invalid. Please use either kubernetes or swarm\n", value)
 	}
 	// Nothing set, use default orchestrator
 	return defaultOrchestrator

cli/command/stack/deploy.go

@@ -19,7 +19,7 @@ func newDeployCommand(dockerCli command.Cli) *cobra.Command {
 		Args:    cli.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			opts.Namespace = args[0]
-			if dockerCli.ClientInfo().HasKubernetes {
+			if dockerCli.ClientInfo().HasKubernetes() {
 				kli, err := kubernetes.WrapCli(dockerCli, cmd)
 				if err != nil {
 					return err

cli/command/stack/list.go

@@ -18,7 +18,7 @@ func newListCommand(dockerCli command.Cli) *cobra.Command {
 		Short:   "List stacks",
 		Args:    cli.NoArgs,
 		RunE: func(cmd *cobra.Command, args []string) error {
-			if dockerCli.ClientInfo().HasKubernetes {
+			if dockerCli.ClientInfo().HasKubernetes() {
 				kli, err := kubernetes.WrapCli(dockerCli, cmd)
 				if err != nil {
 					return err

cli/command/stack/ps.go

@@ -19,7 +19,7 @@ func newPsCommand(dockerCli command.Cli) *cobra.Command {
 		Args:  cli.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			opts.Namespace = args[0]
-			if dockerCli.ClientInfo().HasKubernetes {
+			if dockerCli.ClientInfo().HasKubernetes() {
 				kli, err := kubernetes.WrapCli(dockerCli, cmd)
 				if err != nil {
 					return err

cli/command/stack/remove.go

@@ -19,7 +19,7 @@ func newRemoveCommand(dockerCli command.Cli) *cobra.Command {
 		Args:    cli.RequiresMinArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			opts.Namespaces = args
-			if dockerCli.ClientInfo().HasKubernetes {
+			if dockerCli.ClientInfo().HasKubernetes() {
 				kli, err := kubernetes.WrapCli(dockerCli, cmd)
 				if err != nil {
 					return err

cli/command/stack/services.go

@@ -19,7 +19,7 @@ func newServicesCommand(dockerCli command.Cli) *cobra.Command {
 		Args:  cli.ExactArgs(1),
 		RunE: func(cmd *cobra.Command, args []string) error {
 			opts.Namespace = args[0]
-			if dockerCli.ClientInfo().HasKubernetes {
+			if dockerCli.ClientInfo().HasKubernetes() {
 				kli, err := kubernetes.WrapCli(dockerCli, cmd)
 				if err != nil {
 					return err

cli/command/system/version.go

@@ -137,7 +137,7 @@ func runVersion(dockerCli command.Cli, opts *versionOptions) error {
 			Os:                runtime.GOOS,
 			Arch:              runtime.GOARCH,
 			Experimental:      dockerCli.ClientInfo().HasExperimental,
-			Orchestrator:      string(command.GetOrchestrator(dockerCli.ConfigFile().Orchestrator)),
+			Orchestrator:      string(dockerCli.ClientInfo().Orchestrator),
 		},
 	}
 

cli/flags/common.go

@@ -32,6 +32,7 @@ var (
 type CommonOptions struct {
 	Debug        bool
 	Hosts        []string
+	Orchestrator string
 	LogLevel     string
 	TLS          bool
 	TLSVerify    bool
@@ -53,6 +54,7 @@ func (commonOpts *CommonOptions) InstallFlags(flags *pflag.FlagSet) {
 	flags.StringVarP(&commonOpts.LogLevel, "log-level", "l", "info", `Set the logging level ("debug"|"info"|"warn"|"error"|"fatal")`)
 	flags.BoolVar(&commonOpts.TLS, "tls", false, "Use TLS; implied by --tlsverify")
 	flags.BoolVar(&commonOpts.TLSVerify, FlagTLSVerify, dockerTLSVerify, "Use TLS and verify the remote")
+	flags.StringVar(&commonOpts.Orchestrator, "orchestrator", "", "Which orchestrator to use with the docker cli (swarm|kubernetes)")
 
 	// TODO use flag flags.String("identity"}, "i", "", "Path to libtrust key file")
 

cmd/docker/docker.go

@@ -279,7 +279,7 @@ func areFlagsSupported(cmd *cobra.Command, details versionDetails) error {
 	clientVersion := details.Client().ClientVersion()
 	osType := details.ServerInfo().OSType
 	hasExperimental := details.ServerInfo().HasExperimental
-	hasKubernetes := details.ClientInfo().HasKubernetes
+	hasKubernetes := details.ClientInfo().HasKubernetes()
 
 	errs := []string{}