Check for wired tiger storage engine

Author: aclark4life

django_mongodb_backend/features.py

@@ -103,11 +103,17 @@ def supports_transactions(self):
  with self.connection.cursor():
  client = self.connection.connection
  hello_response = client.admin.command("hello")
+ server_status = client.admin.command("serverStatus")
  if "setName" in hello_response:
  is_replica_set = True
- if "msg" in client.admin.command("hello") and hello_response["msg"] == "isdbgrid":
+ if "msg" in hello_response and hello_response["msg"] == "isdbgrid":
  is_sharded_cluster = True
- if is_replica_set or is_sharded_cluster:
+ if (
+ "storageEngine" in server_status
+ and server_status["storageEngine"].get("name") == "wiredTiger"
+ ):
+ is_wired_tiger = True
+ if (is_replica_set or is_sharded_cluster) and is_wired_tiger:
  return True
  return False