feat(database): handle already closed connections (#7935)

api/CHANGELOG.md

@@ -19,6 +19,9 @@ All notable changes to the **Prowler API** are documented in this file.
 
 ## [v1.8.3] (Prowler v5.7.3)
 
+### Added
+- Database backend to handle already closed connections [(#7935)](https://github.com/prowler-cloud/prowler/pull/7935).
+
 ### Fixed
 - Fixed transaction persistence with RLS operations [(#7916)](https://github.com/prowler-cloud/prowler/pull/7916).
 - Reverted the change `get_with_retry` to use the original `get` method for retrieving tasks [(#7932)](https://github.com/prowler-cloud/prowler/pull/7932).

api/src/backend/config/django/base.py

@@ -128,6 +128,7 @@ DJANGO_GUID = {
 }
 
 DATABASE_ROUTERS = ["api.db_router.MainRouter"]
+POSTGRES_EXTRA_DB_BACKEND_BASE = "database_backend"
 
 
 # Password validation

api/src/backend/database_backend/base.py

@@ -0,0 +1,15 @@
+import django.db
+from django.db.backends.postgresql.base import (
+    DatabaseWrapper as BuiltinPostgresDatabaseWrapper,
+)
+from psycopg2 import InterfaceError
+
+
+class DatabaseWrapper(BuiltinPostgresDatabaseWrapper):
+    def create_cursor(self, name=None):
+        try:
+            return super().create_cursor(name=name)
+        except InterfaceError:
+            django.db.close_old_connections()
+            django.db.connection.connect()
+            return super().create_cursor(name=name)