Fringg
eb18994b7d
- Migrate 660+ datetime.utcnow() across 153 files to datetime.now(UTC) - Migrate 30+ datetime.now() without UTC to datetime.now(UTC) - Convert all 170 DateTime columns to DateTime(timezone=True) - Add migrate_datetime_to_timestamptz() in universal_migration with SET LOCAL timezone='UTC' safety - Remove 70+ .replace(tzinfo=None) workarounds - Fix utcfromtimestamp → fromtimestamp(..., tz=UTC) - Fix fromtimestamp() without tz= (system_logs, backup_service, referral_diagnostics) - Fix fromisoformat/isoparse to ensure aware output (platega, yookassa, wata, miniapp, nalogo) - Fix strptime() to add .replace(tzinfo=UTC) (backup_service, referral_diagnostics) - Fix datetime.combine() to include tzinfo=UTC (remnawave_sync, traffic_monitoring) - Fix datetime.max/datetime.min sentinels with .replace(tzinfo=UTC) - Rename panel_datetime_to_naive_utc → panel_datetime_to_utc - Remove DTZ003 from ruff ignore list
123 lines
4.9 KiB
Python
123 lines
4.9 KiB
Python
from datetime import UTC, datetime
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import aiohttp
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import structlog
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logger = structlog.get_logger(__name__)
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class CurrencyConverter:
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def __init__(self):
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self._cache = {}
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self._cache_ttl = 3600 # 1 час
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self._last_update = {}
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async def get_usd_to_rub_rate(self) -> float:
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"""Получает курс USD/RUB с кешированием"""
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cache_key = 'USD_RUB'
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now = datetime.now(UTC)
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# Проверяем кеш
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if (
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cache_key in self._cache
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and cache_key in self._last_update
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and (now - self._last_update[cache_key]).seconds < self._cache_ttl
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):
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return self._cache[cache_key]
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# Получаем новый курс
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rate = await self._fetch_exchange_rate()
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if rate:
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self._cache[cache_key] = rate
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self._last_update[cache_key] = now
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logger.info('Обновлен курс USD/RUB', rate=rate)
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return rate
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# Возвращаем из кеша если API недоступен
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if cache_key in self._cache:
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logger.warning('API курсов недоступен, используем кешированный курс')
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return self._cache[cache_key]
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# Fallback курс
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logger.warning('Используем fallback курс USD/RUB: 95')
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return 95.0
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async def _fetch_exchange_rate(self) -> float | None:
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"""Получает курс с нескольких источников"""
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sources = [self._fetch_from_cbr, self._fetch_from_exchangerate_api, self._fetch_from_fixer]
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for source in sources:
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try:
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rate = await source()
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if rate and 50 < rate < 200: # Разумные границы курса
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return rate
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except Exception as e:
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logger.debug('Ошибка получения курса из', __name__=source.__name__, error=e)
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continue
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return None
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async def _fetch_from_cbr(self) -> float | None:
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"""Получает курс с сайта ЦБ РФ"""
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try:
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async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=10)) as session:
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async with session.get('https://www.cbr-xml-daily.ru/daily_json.js') as response:
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if response.status == 200:
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data = await response.json()
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usd_rate = data['Valute']['USD']['Value']
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return float(usd_rate)
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except Exception as e:
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logger.debug('Ошибка получения курса ЦБ', error=e)
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return None
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async def _fetch_from_exchangerate_api(self) -> float | None:
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"""Получает курс с exchangerate-api.com"""
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try:
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async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=10)) as session:
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async with session.get('https://api.exchangerate-api.com/v4/latest/USD') as response:
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if response.status == 200:
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data = await response.json()
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rub_rate = data['rates']['RUB']
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return float(rub_rate)
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except Exception as e:
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logger.debug('Ошибка получения курса exchangerate-api', error=e)
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return None
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async def _fetch_from_fixer(self) -> float | None:
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"""Получает курс с fixer.io (бесплатный план)"""
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try:
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async with aiohttp.ClientSession(timeout=aiohttp.ClientTimeout(total=10)) as session:
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# Используем бесплатный endpoint (EUR base)
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async with session.get(
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'https://api.fixer.io/latest?access_key=YOUR_API_KEY&symbols=USD,RUB'
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) as response:
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if response.status == 200:
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data = await response.json()
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if data.get('success'):
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# Конвертируем EUR -> USD -> RUB
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usd_eur = data['rates']['USD']
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rub_eur = data['rates']['RUB']
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usd_rub = rub_eur / usd_eur
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return float(usd_rub)
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except Exception as e:
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logger.debug('Ошибка получения курса fixer', error=e)
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return None
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async def usd_to_rub(self, usd_amount: float) -> float:
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"""Конвертирует USD в RUB"""
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rate = await self.get_usd_to_rub_rate()
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return usd_amount * rate
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async def rub_to_usd(self, rub_amount: float) -> float:
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"""Конвертирует RUB в USD"""
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rate = await self.get_usd_to_rub_rate()
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return rub_amount / rate
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# Глобальный экземпляр
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currency_converter = CurrencyConverter()
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