feat(config): add live slow-sql threshold setting

routes/admin_api/system_config_api.py

@@ -34,6 +34,7 @@ def update_system_config_api():
     schedule_weekdays = data.get("schedule_weekdays")
     new_max_concurrent_per_account = data.get("max_concurrent_per_account")
     new_max_screenshot_concurrent = data.get("max_screenshot_concurrent")
+    db_slow_query_ms = data.get("db_slow_query_ms")
     enable_screenshot = data.get("enable_screenshot")
     auto_approve_enabled = data.get("auto_approve_enabled")
     auto_approve_hourly_limit = data.get("auto_approve_hourly_limit")
@@ -62,6 +63,14 @@ def update_system_config_api():
         if not isinstance(new_max_screenshot_concurrent, int) or new_max_screenshot_concurrent < 1:
             return jsonify({"error": "截图并发数必须大于0（建议根据服务器配置设置，wkhtmltoimage 资源占用较低）"}), 400
 
+    if db_slow_query_ms is not None:
+        try:
+            db_slow_query_ms = int(db_slow_query_ms)
+        except (ValueError, TypeError):
+            return jsonify({"error": "慢 SQL 阈值必须是数字（毫秒）"}), 400
+        if db_slow_query_ms < 0 or db_slow_query_ms > 60000:
+            return jsonify({"error": "慢 SQL 阈值范围应在 0-60000 毫秒之间"}), 400
+
     if enable_screenshot is not None:
         if isinstance(enable_screenshot, bool):
             enable_screenshot = 1 if enable_screenshot else 0
@@ -197,6 +206,7 @@ def update_system_config_api():
         kdocs_admin_notify_email=kdocs_admin_notify_email,
         kdocs_row_start=kdocs_row_start,
         kdocs_row_end=kdocs_row_end,
+        db_slow_query_ms=db_slow_query_ms,
     ):
         return jsonify({"error": "更新失败"}), 400
 
@@ -207,6 +217,14 @@ def update_system_config_api():
             max_global=int(new_config.get("max_concurrent_global", old_config.get("max_concurrent_global", 2))),
             max_per_user=int(new_config.get("max_concurrent_per_account", old_config.get("max_concurrent_per_account", 1))),
         )
+
+        try:
+            import db_pool
+
+            db_pool.configure_slow_query_runtime(threshold_ms=new_config.get("db_slow_query_ms"))
+        except Exception as slow_sql_error:
+            logger.warning(f"慢 SQL 运行时阈值更新失败: {slow_sql_error}")
+
         if new_max_screenshot_concurrent is not None:
             try:
                 from browser_pool_worker import resize_browser_worker_pool
@@ -224,5 +242,7 @@ def update_system_config_api():
         logger.info(f"单用户并发数已更新为: {new_max_concurrent_per_account}")
     if new_max_screenshot_concurrent is not None:
         logger.info(f"截图并发数已更新为: {new_max_screenshot_concurrent}")
+    if db_slow_query_ms is not None:
+        logger.info(f"慢 SQL 阈值已更新为: {db_slow_query_ms}ms")
 
     return jsonify({"message": "系统配置已更新"})