Replace mongodb operation insert with inster_one

Fixes deprecation warning:

"""
DeprecationWarning: insert is deprecated. Use insert_one or insert_many instead.
"""

Signed-off-by: Ivan Kanakarakis <ivan.kanak@gmail.com>

Author: c00kiemon5ter

src/saml2/mdbcache.py

@@ -119,12 +119,14 @@ def set(self, subject_id, entity_id, info, timestamp=0):
                                                          time.struct_time):
             timestamp = time.strftime(TIME_FORMAT, timestamp)
 
-        doc = {"subject_id": subject_id,
-               "entity_id": entity_id,
-               "info": info,
-               "timestamp": timestamp}
-
-        _ = self._cache.insert(doc)
+        doc = {
+            "subject_id": subject_id,
+            "entity_id": entity_id,
+            "info": info,
+            "timestamp": timestamp,
+        }
+
+        _ = self._cache.insert_one(doc)
 
     def reset(self, subject_id, entity_id):
         """ Scrap the assertions received from a IdP or an AA about a special

src/saml2/mongo_store.py

@@ -54,10 +54,10 @@ def store_assertion(self, assertion, to_sign):
             "name_id_key": nkey,
             "assertion_id": assertion.id,
             "assertion": to_dict(assertion, MMODS, True),
-            "to_sign": to_sign
+            "to_sign": to_sign,
         }
 
-        _ = self.assertion.insert(doc)
+        _ = self.assertion.insert_one(doc)
 
     def get_assertion(self, cid):
         res = []
@@ -215,7 +215,7 @@ def store(self, value, **kwargs):
         # Add timestamp to all documents to allow external garbage collecting
         if "created_at" not in doc:
             doc["created_at"] = datetime.datetime.utcnow()
-        _ = self.db.insert(doc)
+        _ = self.db.insert_one(doc)
 
     def get(self, value=None, **kwargs):
         if value is not None: