ec2_vpc_route_table - Fix unintended tag search regression.

cloud/amazon/ec2_vpc_route_table.py

@@ -176,6 +176,11 @@ def get_resource_tags(vpc_conn, resource_id):
             vpc_conn.get_all_tags(filters={'resource-id': resource_id})}
 
 
+def tags_match(match_tags, candidate_tags):
+    return all((k in candidate_tags and candidate_tags[k] == v
+                for k, v in match_tags.iteritems()))
+
+
 def ensure_tags(vpc_conn, resource_id, tags, add_only, check_mode):
     try:
         cur_tags = get_resource_tags(vpc_conn, resource_id)
@@ -204,18 +209,11 @@ def get_route_table_by_id(vpc_conn, vpc_id, route_table_id):
 
 
 def get_route_table_by_tags(vpc_conn, vpc_id, tags):
-    filters = {'vpc_id': vpc_id}
-    filters.update(dict((('tag:{0}'.format(t), v)
-                         for t, v in tags.iteritems())))
-    route_tables = vpc_conn.get_all_route_tables(filters=filters)
-
-    if not route_tables:
-        return None
-    elif len(route_tables) == 1:
-        return route_tables[0]
-
-    raise RouteTableException(
-        'Found more than one route table based on the supplied tags, aborting')
+    route_tables = vpc_conn.get_all_route_tables(filters={'vpc_id': vpc_id})
+    for route_table in route_tables:
+        this_tags = get_resource_tags(vpc_conn, route_table.id)
+        if tags_match(tags, this_tags):
+            return route_table
 
 
 def route_spec_matches_route(route_spec, route):