Merge pull request #10 from kayac/delete

Add delete sub command.

README.md

@@ -28,6 +28,9 @@ Commands:
 
   rollback [<flags>]
     rollback service
+
+  delete [<flags>]
+    delete service
 ```
 
 For more options for sub-commands, See `ecspresso sub-command --help`.

cmd/ecspresso/main.go

@@ -41,6 +41,12 @@ func _main() int {
 		DeregisterTaskDefinition: rollback.Flag("dereginster-task-definition", "deregister rolled back task definition").Bool(),
 	}
 
+	delete := kingpin.Command("delete", "delete service")
+	deleteOption := ecspresso.DeleteOption{
+		DryRun: delete.Flag("dry-run", "dry-run").Bool(),
+		Force:  delete.Flag("force", "force delete. not confirm").Bool(),
+	}
+
 	sub := kingpin.Parse()
 
 	c := ecspresso.NewDefaultConfig()
@@ -64,6 +70,8 @@ func _main() int {
 		err = app.Rollback(rollbackOption)
 	case "create":
 		err = app.Create(createOption)
+	case "delete":
+		err = app.Delete(deleteOption)
 	default:
 		kingpin.Usage()
 		return 1

ecspresso.go

@@ -8,6 +8,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/Songmu/prompter"
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/session"
 	"github.com/aws/aws-sdk-go/service/ecs"
@@ -172,6 +173,41 @@ func (d *App) Create(opt CreateOption) error {
 	return nil
 }
 
+func (d *App) Delete(opt DeleteOption) error {
+	ctx, cancel := d.Start()
+	defer cancel()
+
+	d.Log("Deleting service")
+	sv, err := d.DescribeServiceStatus(ctx, 3)
+	if err != nil {
+		return err
+	}
+
+	if *opt.DryRun {
+		d.Log("DRY RUN OK")
+		return nil
+	}
+
+	if !*opt.Force {
+		service := prompter.Prompt(`Enter the service name to DELETE`, "")
+		if service != *sv.ServiceName {
+			d.Log("Aborted")
+			return errors.New("confirmation failed")
+		}
+	}
+
+	dsi := &ecs.DeleteServiceInput{
+		Cluster: sv.ClusterArn,
+		Service: sv.ServiceName,
+	}
+	if _, err := d.ecs.DeleteServiceWithContext(ctx, dsi); err != nil {
+		return errors.Wrap(err, "delete failed")
+	}
+	d.Log("Service is deleted")
+
+	return nil
+}
+
 func (d *App) Deploy(opt DeployOption) error {
 	ctx, cancel := d.Start()
 	defer cancel()

options.go

@@ -20,3 +20,8 @@ type RollbackOption struct {
 	DryRun                   *bool
 	DeregisterTaskDefinition *bool
 }
+
+type DeleteOption struct {
+	DryRun *bool
+	Force  *bool
+}