feat: update code collection check

mongoengine/base/document.py

@@ -1,6 +1,6 @@
 import copy
 import numbers
-from collections import Hashable
+from collections.abc import Hashable
 from functools import partial
 
 from bson import ObjectId, json_util

mongoengine/document.py

@@ -808,7 +808,7 @@ class Document(BaseDocument):
         collection = cls._get_collection()
         # 746: when connection is via mongos, the read preference is not necessarily an indication that
         # this code runs on a secondary
-        if not collection.is_mongos and collection.read_preference > 1:
+        if collection.is_mongos is not None and collection.read_preference.mode > 1:
             return
 
         # determine if an index which we are creating includes

mongoengine/fields.py

@@ -6,7 +6,7 @@ import socket
 import time
 import uuid
 import warnings
-from collections import Mapping
+from collections.abc import Mapping
 from operator import itemgetter
 
 from bson import Binary, DBRef, ObjectId, SON