Add LocalStrategy for schema export purposes

cassandra/metadata.py

@@ -332,6 +332,8 @@ class ReplicationStrategy(object):
             if not repl_factor:
                 return None
             return SimpleStrategy(repl_factor)
+        elif strategy_class.endswith("LocalStrategy"):
+            return LocalStrategy()
 
     def make_token_replica_map(token_to_primary_replica, ring):
         raise NotImplementedError()
@@ -404,6 +406,17 @@ class NetworkTopologyStrategy(ReplicationStrategy):
         return ret + "}"
 
 
+class LocalStrategy(ReplicationStrategy):
+
+    name = "LocalStrategy"
+
+    def make_token_replica_map(self, token_to_primary_replica, ring):
+        return {}
+
+    def export_for_schema(self):
+        return "{'class': 'LocalStrategy'}"
+
+
 class KeyspaceMetadata(object):
     """
     A representation of the schema for a single keyspace.