Delete GCE disk on SIGINT.

builder/googlecompute/step_create_instance.go

@@ -125,6 +125,29 @@ func (s *StepCreateInstance) Cleanup(state multistep.StateBag) {
 				"Error: %s", name, err))
 	}
 
+	ui.Message("Instance has been deleted!")
 	state.Put("instance_name", "")
+
+	// Deleting the instance does not remove the boot disk. This cleanup removes
+	// the disk.
+	ui.Say("Deleting disk...")
+	errCh, err = driver.DeleteDisk(config.Zone, config.DiskName)
+	if err == nil {
+		select {
+		case err = <-errCh:
+		case <-time.After(config.stateTimeout):
+			err = errors.New("time out while waiting for disk to delete")
+		}
+	}
+
+	if err != nil {
+		ui.Error(fmt.Sprintf(
+			"Error deleting disk. Please delete it manually.\n\n"+
+				"Name: %s\n"+
+				"Error: %s", config.InstanceName, err))
+	}
+
+	ui.Message("Disk has been deleted!")
+
 	return
 }

builder/googlecompute/step_create_instance_test.go

@@ -39,7 +39,14 @@ func TestStepCreateInstance(t *testing.T) {
 		t.Fatal("should've deleted instance")
 	}
 	if driver.DeleteInstanceZone != config.Zone {
-		t.Fatalf("bad zone: %#v", driver.DeleteInstanceZone)
+		t.Fatalf("bad instance zone: %#v", driver.DeleteInstanceZone)
+	}
+
+	if driver.DeleteDiskName != config.InstanceName {
+		t.Fatal("should've deleted disk")
+	}
+	if driver.DeleteDiskZone != config.Zone {
+		t.Fatalf("bad disk zone: %#v", driver.DeleteDiskZone)
 	}
 }