Reliably merge the yaml maps data

util/util.go

@@ -164,3 +164,21 @@ func Convert(from, to interface{}) error {
 
 	return yaml.Unmarshal(bytes, to)
 }
+
+func MergeMaps(left, right map[interface{}]interface{}) {
+	for k, v := range right {
+		merged := false
+		if existing, ok := left[k]; ok {
+			if rightMap, ok := v.(map[interface{}]interface{}); ok {
+				if leftMap, ok := existing.(map[interface{}]interface{}); ok {
+					merged = true
+					MergeMaps(leftMap, rightMap)
+				}
+			}
+		}
+
+		if !merged {
+			left[k] = v
+		}
+	}
+}