Fixed prometheus middleware. (#175)

taskiq/abc/broker.py

@@ -153,7 +153,7 @@ async def startup(self) -> None:
 
         for middleware in self.middlewares:
             if middleware.__class__.startup != TaskiqMiddleware.startup:
-                await maybe_awaitable(middleware.startup)
+                await maybe_awaitable(middleware.startup())
 
         await self.result_backend.startup()
 

taskiq/middlewares/prometheus_middleware.py

@@ -29,12 +29,6 @@ def __init__(
     ) -> None:
         super().__init__()
 
-        self.found_errors = None
-        self.received_tasks = None
-        self.success_tasks = None
-        self.saved_results = None
-        self.execution_time = None
-
         metrics_path = metrics_path or Path(gettempdir()) / "taskiq_worker"
 
         if not metrics_path.exists():
@@ -110,8 +104,6 @@ def pre_execute(
         :param message: current message.
         :return: message
         """
-        if self.received_tasks is None:
-            return message
         self.received_tasks.labels(message.task_name).inc()
         return message
 
@@ -126,12 +118,6 @@ def post_execute(
         :param message: received message.
         :param result: result of the execution.
         """
-        if (  # noqa: WPS337
-            self.success_tasks is None
-            or self.execution_time is None
-            or self.found_errors is None
-        ):
-            return
         if result.is_err:
             self.found_errors.labels(message.task_name).inc()
         else:
@@ -149,6 +135,4 @@ def post_save(
         :param message: received message.
         :param result: result of execution.
         """
-        if self.saved_results is None:
-            return
         self.saved_results.labels(message.task_name).inc()