From 9ea26cc144590913c99d4e1ebc1ea1872e6bede5 Mon Sep 17 00:00:00 2001
From: duanmeng <duanmeng_yewu@cmss.chinamobile.com>
Date: Tue, 10 May 2022 13:28:30 +0800
Subject: [PATCH] fix empty anannotation which result to null-pointer exception
 when add overwrite annotation

Signed-off-by: duanmeng <duanmeng_yewu@cmss.chinamobile.com>
---
 pkg/karmadactl/promote.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/pkg/karmadactl/promote.go b/pkg/karmadactl/promote.go
index 8f037c3f6..f2d2c37c8 100644
--- a/pkg/karmadactl/promote.go
+++ b/pkg/karmadactl/promote.go
@@ -379,6 +379,9 @@ func preprocessResource(obj *unstructured.Unstructured) error {
 // addOverwriteAnnotation add annotation "work.karmada.io/conflict-resolution" to the resource
 func addOverwriteAnnotation(obj *unstructured.Unstructured) {
 	annotations := obj.DeepCopy().GetAnnotations()
+	if annotations == nil {
+		annotations = map[string]string{}
+	}
 	if _, exist := annotations[workv1alpha2.ResourceConflictResolutionAnnotation]; !exist {
 		annotations[workv1alpha2.ResourceConflictResolutionAnnotation] = workv1alpha2.ResourceConflictResolutionOverwrite
 		obj.SetAnnotations(annotations)