30 lines
784 B
Python
30 lines
784 B
Python
from abc import ABC, abstractmethod
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from typing import Any, Awaitable, Callable, Dict, TypeVar
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from aiogram.types import TelegramObject
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T = TypeVar("T")
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class BaseMiddleware(ABC):
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"""
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Generic middleware class
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"""
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@abstractmethod
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async def __call__(
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self,
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handler: Callable[[TelegramObject, Dict[str, Any]], Awaitable[Any]],
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event: TelegramObject,
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data: Dict[str, Any],
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) -> Any: # pragma: no cover
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"""
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Execute middleware
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:param handler: Wrapped handler in middlewares chain
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:param event: Incoming event (Subclass of :class:`aiogram.types.base.TelegramObject`)
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:param data: Contextual data. Will be mapped to handler arguments
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:return: :class:`Any`
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"""
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pass
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