add MergeAnnotations func

Author: guozhi.li

operator/redisfailover/util/label.go

@@ -11,3 +11,15 @@ func MergeLabels(allLabels ...map[string]string) map[string]string {
 	}
 	return res
 }
+
+// MergeAnnotations merges all the annotations maps received as argument into a single new label map.
+func MergeAnnotations(allMergeAnnotations ...map[string]string) map[string]string {
+	res := map[string]string{}
+
+	for _, labels := range allMergeAnnotations {
+		for k, v := range labels {
+			res[k] = v
+		}
+	}
+	return res
+}

service/k8s/statefulset.go

@@ -101,7 +101,7 @@ func (s *StatefulSetService) CreateOrUpdateStatefulSet(namespace string, statefu
 	// namespace is our spec(https://github.com/kubernetes/community/blob/master/contributors/devel/api-conventions.md#concurrency-control-and-consistency),
 	// we will replace the current namespace state.
 	statefulSet.ResourceVersion = storedStatefulSet.ResourceVersion
-	statefulSet.Annotations = util.MergeLabels(statefulSet.Annotations, storedStatefulSet.Annotations)
+	statefulSet.Annotations = util.MergeAnnotations(statefulSet.Annotations, storedStatefulSet.Annotations)
 	return s.UpdateStatefulSet(namespace, statefulSet)
 }