core: revert django update (#5236)

* Revert "core: bump django from 4.1.7 to 4.2 (#5151)"

This reverts commit 18a4eac527.

* run unittests with postgres 11 and 12

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

authentik/root/db_engine/base.py

@@ -1,21 +0,0 @@
-"""Database engine that uses prometheus exporter"""
-from django.db.backends.postgresql import base
-from django_prometheus.db.common import DatabaseWrapperMixin, ExportingCursorWrapper
-
-
-class DatabaseFeatures(base.DatabaseFeatures):
-    """Our database has the exact same features as the base one."""
-
-
-class DatabaseWrapper(DatabaseWrapperMixin, base.DatabaseWrapper):
-    """Database wrapper which exports metrics to prometheus"""
-
-    def get_connection_params(self):
-        conn_params = super().get_connection_params()
-        conn_params["cursor_factory"] = ExportingCursorWrapper(base.Cursor, self.alias, self.vendor)
-        return conn_params
-
-    def create_cursor(self, name=None):
-        # cursor_factory is a kwarg to connect() so restore create_cursor()'s
-        # default behavior
-        return base.DatabaseWrapper.create_cursor(self, name=name)

authentik/root/settings.py

@@ -270,7 +270,7 @@ CHANNEL_LAYERS = {
 
 DATABASES = {
     "default": {
-        "ENGINE": "authentik.root.db_engine",
+        "ENGINE": "django_prometheus.db.backends.postgresql",
         "HOST": CONFIG.y("postgresql.host"),
         "NAME": CONFIG.y("postgresql.name"),
         "USER": CONFIG.y("postgresql.user"),