Revert "pymongo driver does not support conn_*"

This reverts commit 4d155ac.

Author: aclark4life

README.md

@@ -131,8 +131,10 @@ MONGODB_URI = "mongodb+srv://myDatabaseUser:D1fficultP%40ssw0rd@cluster0.example
 DATABASES["default"] = django_mongodb.parse_uri(MONGODB_URI)
 ```
 
-#### `django_mongodb.parse_uri(uri, test=None)`
+#### `django_mongodb.parse_uri(uri, conn_max_age=0, conn_health_checks=False, test=None)`
 
+- Use `conn_max_age` and `conn_health_checks` to configure [persistent database
+  connections](https://docs.djangoproject.com/en/stable/ref/databases/#persistent-database-connections).
 - Use `test` to provide a dictionary of [settings for test databases](
   https://docs.djangoproject.com/en/stable/ref/settings/#test).
 

django_mongodb/utils.py

@@ -26,7 +26,7 @@ def check_django_compatability():
         )
 
 
-def parse_uri(uri, test=None):
+def parse_uri(uri, conn_max_age=0, conn_health_checks=False, test=None):
     """
     Convert the given uri into a dictionary suitable for Django's DATABASES
     setting.
@@ -51,6 +51,8 @@ def parse_uri(uri, test=None):
         "USER": uri.get("username"),
         "PASSWORD": uri.get("password"),
         "OPTIONS": uri.get("options"),
+        "CONN_MAX_AGE": conn_max_age,
+        "CONN_HEALTH_CHECKS": conn_health_checks,
     }
     if test:
         settings_dict["TEST"] = test

tests/utils_/test_parse_uri.py

@@ -65,6 +65,14 @@ def test_localhosts_with_ports(self):
         self.assertEqual(settings_dict["HOST"], "localhost:27017,localhost:27018,localhost:27019")
         self.assertEqual(settings_dict["PORT"], None)
 
+    def test_conn_max_age(self):
+        settings_dict = parse_uri(URI, conn_max_age=600)
+        self.assertEqual(settings_dict["CONN_MAX_AGE"], 600)
+
+    def test_conn_health_checks(self):
+        settings_dict = parse_uri(URI, conn_health_checks=True)
+        self.assertEqual(settings_dict["CONN_HEALTH_CHECKS"], True)
+
     def test_test_kwarg(self):
         settings_dict = parse_uri(URI, test={"NAME": "test_db"})
         self.assertEqual(settings_dict["TEST"]["NAME"], "test_db")