Added new base class for exceptions, added templates

Signed-off-by: chandr-andr (Kiselev Aleksandr) <chandr@chandr.net>

taskiq/brokers/inmemory_broker.py

@@ -156,7 +156,7 @@ async def kick(self, message: BrokerMessage) -> None:
         """
         target_task = self.find_task(message.task_name)
         if target_task is None:
-            raise TaskiqError("Unknown task.")
+            raise TaskiqError(description="Unknown task.")
 
         receiver_cb = self.receiver.callback(message=message.message)
         if self.await_inplace:

taskiq/brokers/shared_broker.py

@@ -57,8 +57,10 @@ async def kick(self, message: BrokerMessage) -> None:
         :raises TaskiqError: if called.
         """
         raise TaskiqError(
-            "You cannot use kiq directly on shared task "
-            "without setting the default_broker.",
+            description=(
+                "You cannot use kiq directly on shared task "
+                "without setting the default_broker."
+            ),
         )
 
     async def listen(self) -> AsyncGenerator[bytes, None]:  # type: ignore
@@ -69,7 +71,7 @@ async def listen(self) -> AsyncGenerator[bytes, None]:  # type: ignore
 
         :raises TaskiqError: if called.
         """
-        raise TaskiqError("Shared broker cannot listen")
+        raise TaskiqError(description="Shared broker cannot listen")
 
     def _register_task(
         self,

taskiq/exceptions.py

@@ -4,7 +4,8 @@
 class TaskiqError(root.Error):
     """Base exception for all errors."""
 
-    __template__ = "Base exception for all errors"
+    __template__ = "Exception occurred: {description}"
+    description: str
 
 
 class TaskiqResultTimeoutError(TaskiqError):

taskiq/funcs.py

@@ -47,7 +47,7 @@ async def check_task(task: AsyncTaskiqTask[Any]) -> None:
 
     while task_ids:
         if 0 < timeout < time() - start_time:
-            raise TaskiqResultTimeoutError("Timed out", timeout=timeout)
+            raise TaskiqResultTimeoutError(timeout=timeout)
         check_tasks = []
         for task in tasks:
             check_tasks.append(loop.create_task(check_task(task)))

taskiq/receiver/receiver.py

@@ -353,7 +353,9 @@ async def prefetcher(
         """
         fetched_tasks: int = 0
         iterator = self.broker.listen()
-        current_message: asyncio.Task[bytes | AckableMessage] = asyncio.create_task(
+        current_message: asyncio.Task[
+            Union[bytes, AckableMessage]
+        ] = asyncio.create_task(
             iterator.__anext__(),  # type: ignore
         )
 

taskiq/task.py

@@ -151,7 +151,7 @@ async def wait_result(
         while not await self.is_ready():
             await asyncio.sleep(check_interval)
             if 0 < timeout < time() - start_time:
-                raise TaskiqResultTimeoutError("Timed out", timeout=timeout)
+                raise TaskiqResultTimeoutError(timeout=timeout)
         return await self.get_result(with_logs=with_logs)
 
     async def get_progress(self) -> "Optional[TaskProgress[Any]]":