add routestats env variables

Author: dsschult

file_catalog/config.py

@@ -54,6 +54,16 @@ class Config(Dict[str, Optional[Union[bool, int, str]]]):
         'MONGODB_HOST': ConfigParamSpec('localhost', str, 'MongoDB host'),
         'MONGODB_PORT': ConfigParamSpec(27017, int, 'MongoDB port'),
         'MONGODB_URI': ConfigParamSpec(None, str, 'MongoDB URI'),
+        'ROUTESTATS_OVERLOAD_LIMIT': ConfigParamSpec(
+            240,
+            int,
+            'Average query time in seconds to declare overload'
+        ),
+        'ROUTESTATS_WINDOW_SIZE': ConfigParamSpec(
+            600,
+            int,
+            'Query window size in seconds to declare overload'
+        ),
     }
 
     def __init__(self) -> None:

file_catalog/server.py

@@ -125,6 +125,10 @@ def create(config: Dict[str, Any],
         "config": config,
         "db": mongo,
         "debug": debug,
+        "routestats": {
+            "window_time": config["ROUTESTATS_WINDOW_SIZE"],
+            "timeout": config["ROUTESTATS_OVERLOAD_LIMIT"],
+        },
     }
     if 'CI_TEST_ENV' in os.environ:
         del handler_setup["auth"]