41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
from celery import Celery
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from app import app as flaskapp
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from app import db
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from model import Session, Account
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import lib.twitter
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from twitter import TwitterError
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from datetime import timedelta, datetime
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app = Celery('tasks', broker=flaskapp.config['CELERY_BROKER'], task_serializer='pickle')
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@app.task
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def remove_old_sessions():
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Session.query.filter(Session.updated_at < (db.func.now() - timedelta(hours=12))).\
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delete(synchronize_session=False)
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db.session.commit()
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@app.task(autoretry_for=(TwitterError,))
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def fetch_acc(remote_id):
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lib.twitter.fetch_acc(Account.query.get(remote_id), **flaskapp.config.get_namespace("TWITTER_"))
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@app.task
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def queue_fetch_for_most_stale_accounts(min_staleness=timedelta(minutes=1), limit=20):
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accs = Account.query\
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.filter(Account.last_fetch < db.func.now() - min_staleness)\
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.order_by(db.asc(Account.last_fetch))\
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.limit(limit)
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for acc in accs:
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fetch_acc.s(acc.remote_id).delay()
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acc.last_fetch = db.func.now()
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db.session.commit()
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app.add_periodic_task(10*60, remove_old_sessions)
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app.add_periodic_task(60, queue_fetch_for_most_stale_accounts)
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if __name__ == '__main__':
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app.worker_main()
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