43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
import asyncio
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from datetime import datetime, timedelta
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from logbook import Logger
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from sqlalchemy import func
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from models import User
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logger = Logger(__name__)
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class Refresher:
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def __init__(self, session, wallabag):
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self.session = session
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self.wallabag = wallabag
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self.grace = 120
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def _wait_time(self):
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next = self.session.query(func.min(User.token_valid).label("min")).first()
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if next is None or next.min is None:
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return 3
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delta = next.min - datetime.utcnow()
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if delta < timedelta(seconds=self.grace):
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return 0
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calculated = delta - timedelta(seconds=self.grace)
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return calculated.total_seconds()
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async def refresh(self):
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while True:
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await asyncio.sleep(self._wait_time())
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ts = datetime.utcnow() + timedelta(seconds=self.grace)
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refreshes = [self._refresh_user(user) for user
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in self.session.query(User).filter(User.token_valid < ts).all()]
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await asyncio.gather(*refreshes)
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self.session.commit()
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async def _refresh_user(self, user):
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logger.info("Refresh token for {}", user.name)
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await self.wallabag.refresh_token(user)
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