add list command

actions/component_actions.go

@@ -30,6 +30,20 @@ func resolveCompNames(ws *core.Workspace, options *core.GlobalOptions, namesFrom
 	return compNames, nil
 }
 
+func ListCompNames(ws *core.Workspace, options *core.GlobalOptions) ([]string, error) {
+	var compNames []string
+	if options.Tag == "" {
+		return ws.GetComponentNamesList(), nil
+	}
+
+	compNames = ws.FindComponentNamesByTag(options.Tag)
+	if len(compNames) == 0 {
+		return nil, errors.New(fmt.Sprintf("components with tag %s not found", options.Tag))
+	}
+
+	return compNames, nil
+}
+
 func StartServiceAction(options *core.GlobalOptions, svcNames []string) error {
 	ws, err := core.GetWorkspaceConfig(options.WorkspaceName)
 	if err != nil {
@@ -316,3 +330,21 @@ func CloneComponentAction(options *core.GlobalOptions, svcNames []string, noHook
 
 	return nil
 }
+
+func ListServicesAction(options *core.GlobalOptions) error {
+	ws, err := core.GetWorkspaceConfig(options.WorkspaceName)
+	if err != nil {
+		return err
+	}
+
+	compNames, err := ListCompNames(ws, options)
+	if err != nil {
+		return err
+	}
+
+	for _, compName := range compNames {
+		_, _ = core.Pc.Println(compName)
+	}
+
+	return nil
+}

cmd/elc.go

@@ -65,6 +65,7 @@ func InitCobra() *cobra.Command {
 	NewUpdateCommand(rootCmd)
 	NewFixUpdateCommand(rootCmd)
 	NewServiceCloneCommand(rootCmd)
+	NewServiceListCommand(rootCmd)
 
 	return rootCmd
 }
@@ -348,3 +349,16 @@ func NewServiceCloneCommand(parentCommand *cobra.Command) {
 	command.Flags().BoolVar(&noHook, "no-hook", false, "do not execute hook script after cloning")
 	parentCommand.AddCommand(command)
 }
+
+func NewServiceListCommand(parentCommand *cobra.Command) {
+	var command = &cobra.Command{
+		Use:   "list [OPTIONS]",
+		Short: "Show list of services",
+		Long:  "Show list of services.\nCan be used in scripts for loops.",
+		Args:  cobra.ArbitraryArgs,
+		RunE: func(cmd *cobra.Command, args []string) error {
+			return actions.ListServicesAction(&globalOptions)
+		},
+	}
+	parentCommand.AddCommand(command)
+}

core/workspace.go

@@ -177,3 +177,14 @@ func (ws *Workspace) FindComponentNamesByTag(tag string) []string {
 
 	return result
 }
+
+func (ws *Workspace) GetComponentNamesList() []string {
+	result := make([]string, 0)
+	for name, comp := range ws.Components {
+		if !comp.Config.IsTemplate {
+			result = append(result, name)
+		}
+	}
+
+	return result
+}