fix patch rollout batch id

pkg/controller/rollout/rollout_status.go

@@ -119,7 +119,7 @@ func (r *RolloutReconciler) calculateRolloutStatus(rollout *v1beta1.Rollout) (re
 			//	   newStatus.CanaryStatus.CurrentStepState == "Completed" {
 			//	   // do something after rollout
 			//   }
-			//```
+			// ```
 			// But at the first deployment of Rollout/Workload, CanaryStatus isn't set due to no rollout progression,
 			// and PaaS platform cannot judge whether the deployment is completed base on the code above. So we have
 			// to update the status just like the rollout was completed.
@@ -349,7 +349,11 @@ func (r *RolloutReconciler) handleFinalizer(rollout *v1beta1.Rollout) error {
 
 func getRolloutID(workload *util.Workload) string {
 	if workload != nil {
-		return workload.Labels[v1beta1.RolloutIDLabel]
+		rolloutID := workload.Labels[v1beta1.RolloutIDLabel]
+		if rolloutID == "" {
+			rolloutID = workload.CanaryRevision
+		}
+		return rolloutID
 	}
 	return ""
 }