command: get supports -update

command/get.go

@@ -16,9 +16,12 @@ type GetCommand struct {
 }
 
 func (c *GetCommand) Run(args []string) int {
+	var update bool
+
 	args = c.Meta.process(args, false)
 
 	cmdFlags := flag.NewFlagSet("get", flag.ContinueOnError)
+	cmdFlags.BoolVar(&update, "update", false, "update")
 	cmdFlags.Usage = func() { c.Ui.Error(c.Help()) }
 	if err := cmdFlags.Parse(args); err != nil {
 		return 1
@@ -40,9 +43,14 @@ func (c *GetCommand) Run(args []string) int {
 		}
 	}
 
+	mode := module.GetModeGet
+	if update {
+		mode = module.GetModeUpdate
+	}
+
 	_, _, err := c.Context(contextOpts{
 		Path:    path,
-		GetMode: module.GetModeGet,
+		GetMode: mode,
 	})
 	if err != nil {
 		c.Ui.Error(fmt.Sprintf("Error loading Terraform: %s", err))

command/get_test.go

@@ -28,6 +28,9 @@ func TestGet(t *testing.T) {
 	if !strings.Contains(output, "Get: file://") {
 		t.Fatalf("doesn't look like get: %s", output)
 	}
+	if strings.Contains(output, "(update)") {
+		t.Fatalf("doesn't look like get: %s", output)
+	}
 }
 
 func TestGet_multipleArgs(t *testing.T) {
@@ -75,4 +78,34 @@ func TestGet_noArgs(t *testing.T) {
 	if !strings.Contains(output, "Get: file://") {
 		t.Fatalf("doesn't look like get: %s", output)
 	}
+	if strings.Contains(output, "(update)") {
+		t.Fatalf("doesn't look like get: %s", output)
+	}
 }
+
+func TestGet_update(t *testing.T) {
+	ui := new(cli.MockUi)
+	c := &GetCommand{
+		Meta: Meta{
+			ContextOpts: testCtxConfig(testProvider()),
+			Ui:          ui,
+		},
+	}
+
+	args := []string{
+		"-update",
+		testFixturePath("get"),
+	}
+	if code := c.Run(args); code != 0 {
+		t.Fatalf("bad: \n%s", ui.ErrorWriter.String())
+	}
+
+	output := ui.OutputWriter.String()
+	if !strings.Contains(output, "Get: file://") {
+		t.Fatalf("doesn't look like get: %s", output)
+	}
+	if !strings.Contains(output, "(update)") {
+		t.Fatalf("doesn't look like get: %s", output)
+	}
+}
+

command/module_storage.go

@@ -19,6 +19,11 @@ func (s *uiModuleStorage) Dir(source string) (string, bool, error) {
 }
 
 func (s *uiModuleStorage) Get(source string, update bool) error {
-	s.Ui.Output(fmt.Sprintf("Get: %s", source))
+	updateStr := ""
+	if update {
+		updateStr = " (update)"
+	}
+
+	s.Ui.Output(fmt.Sprintf("Get: %s%s", source, updateStr))
 	return s.Storage.Get(source, update)
 }