refactor(merge-feeds): add description for exception

ibi-group · May 6, 2019 · b9e95a0 · b9e95a0
1 parent f81ba52
commit b9e95a0
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/main/java/com/conveyal/datatools/manager/controllers/api/FeedVersionController.java b/src/main/java/com/conveyal/datatools/manager/controllers/api/FeedVersionController.java
@@ -280,7 +280,9 @@ private static String mergeFeedVersions(Request req, Response res) {
         MergeFeedsType mergeType;
         try {
             mergeType = MergeFeedsType.valueOf(req.queryParams("mergeType"));
-            if (mergeType.equals(REGIONAL)) throw new IllegalArgumentException();
+            if (mergeType.equals(REGIONAL)) {
+                throw new IllegalArgumentException("Regional merge type is not permitted for this endpoint.");
+            }
         } catch (IllegalArgumentException e) {
             logMessageAndHalt(req, 400, "Must provide valid merge type.", e);
             return null;