Vladless
50 lines
1.8 KiB
Python
50 lines
1.8 KiB
Python
from aiogram import BaseMiddleware, Bot
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from aiogram.exceptions import TelegramBadRequest
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from aiogram.types import CallbackQuery
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from core.cache_config import (
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THROTTLE_CACHE_TTL_SEC,
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THROTTLE_NOTICE_TTL_SEC,
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)
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from core.redis_cache import cache_incr, cache_key, cache_setnx
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from hashlib import sha1
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class ThrottlingMiddleware(BaseMiddleware):
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def __init__(self) -> None:
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self._counter_ttl = THROTTLE_CACHE_TTL_SEC
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self._notice_ttl = THROTTLE_NOTICE_TTL_SEC
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async def __call__(self, handler, event, data):
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if not isinstance(event, CallbackQuery):
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return await handler(event, data)
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user_id = event.from_user.id if event.from_user else None
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if user_id is None:
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return await handler(event, data)
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key = (user_id, event.data or "")
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key_hash = sha1(key[1].encode("utf-8")).hexdigest()
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counter_key = cache_key("throttle_counter", user_id, key_hash)
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current_count = await cache_incr(counter_key, self._counter_ttl)
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if current_count >= 2:
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notice_key = cache_key("throttle_notice", user_id, key_hash)
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if await cache_setnx(notice_key, 1, self._notice_ttl):
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bot: Bot = data["bot"]
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try:
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await bot.answer_callback_query(
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callback_query_id=event.id,
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text="Слишком много нажатий, подождите...",
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show_alert=False,
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)
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except TelegramBadRequest as e:
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msg = str(e).lower()
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if "query is too old" in msg or "response timeout expired" in msg or "query id is invalid" in msg:
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pass
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else:
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raise
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return
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return await handler(event, data)
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