Merge pull request #3383 from atlanhq/DQ-165

DQ-165 Prevent user YAML override

Author: bichitra95

repository/src/main/java/org/apache/atlas/repository/store/graph/v2/preprocessor/contract/ContractPreProcessor.java

@@ -109,8 +109,10 @@ private void processCreateContract(AtlasEntity entity, EntityMutationContext con
         authorizeContractCreateOrUpdate(entity, associatedAsset);
 
         boolean contractSync = syncContractCertificateStatus(entity, contract);
-        contractString = DataContract.serialize(contract);
-        entity.setAttribute(ATTR_CONTRACT, contractString);
+        if (!isContractYaml(entity)) {
+            contractString = DataContract.serialize(contract);
+            entity.setAttribute(ATTR_CONTRACT, contractString);
+        }
         String contractStringJSON = DataContract.serializeJSON(contract);
         entity.setAttribute(ATTR_CONTRACT_JSON, contractStringJSON);
 
@@ -298,4 +300,8 @@ private static String getContractString(AtlasEntity entity) {
         }
         return contractString;
     }
+
+    private static boolean isContractYaml(AtlasEntity entity) {
+        return !StringUtils.isEmpty((String) entity.getAttribute(ATTR_CONTRACT));
+    }
 }