Add debug logging for Queries

Add a configurable logger for logging Servershell and API
queries to a dedicated file.

Author: kofrezo

serveradmin/serverdb/query_executer.py

@@ -1,12 +1,16 @@
 """Serveradmin - Query Executer
 
-Copyright (c) 2019 InnoGames GmbH
+Copyright (c) 2025 InnoGames GmbH
 """
 
+import logging
+import time
+
 from django.core.exceptions import ObjectDoesNotExist, ValidationError
 from django.db import DataError, connection, transaction
 
 from adminapi.filters import Any
+from adminapi.parse import build_query
 from serveradmin.serverdb.models import Attribute, ServertypeAttribute, Server
 from serveradmin.serverdb.query_builder import get_server_query
 from serveradmin.serverdb.query_materializer import QueryMaterializer
@@ -15,6 +19,8 @@
 def execute_query(filters, restrict, order_by):
     """The main function to execute queries"""
 
+    start = time.time()
+
     # We need the restrict argument in slightly different structure.
     if restrict is None:
         joins = None
@@ -98,7 +104,12 @@ def cast(join):
         # materializer module for its details.  The functions on this module
         # continues with the filtering step.
         servers = _get_servers(filters, attribute_lookup, related_vias)
-        return list(QueryMaterializer(servers, *materializer_args))
+        result = list(QueryMaterializer(servers, *materializer_args))
+
+        duration = time.time() - start
+        logging.getLogger('queries').debug(f"{build_query(filters)};{duration:.3f}s;{len(result)}")
+
+        return result
 
 
 def _get_joins(restrict):