72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
#!/usr/bin/env python3
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import asyncio
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import datetime
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from logbook import Logger
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from sqlalchemy.orm import joinedload
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from wallabag_kindle_consumer.models import User, Job, context_session
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logger = Logger(__name__)
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class Consumer:
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def __init__(self, wallabag, cfg, sender):
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self.wallabag = wallabag
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self.sessionmaker = context_session(cfg)
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self.interval = cfg.consume_interval
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self.sender = sender
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self.running = True
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self._wait_fut = None # type: asyncio.Future
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async def fetch_jobs(self, user):
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logger.debug("Fetch entries for user {}", user.name)
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async for entry in self.wallabag.fetch_entries(user):
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logger.info("Schedule job to send entry {}", entry.id)
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job = Job(article=entry.id, title=entry.title, format=entry.tag.format)
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user.jobs.append(job)
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await self.wallabag.remove_tag(user, entry)
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async def process_job(self, job, session):
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logger.info("Process export for job {id} ({format})", id=job.article, format=job.format)
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data = await self.wallabag.export_article(job.user, job.article, job.format)
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await self.sender.send_mail(job, data)
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session.delete(job)
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async def _wait_since(self, since: datetime.datetime):
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now = datetime.datetime.utcnow()
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wait = max(0.0, self.interval - (now - since).total_seconds())
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if not self.running:
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return
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self._wait_fut = asyncio.ensure_future(asyncio.sleep(wait))
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try:
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await self._wait_fut
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except asyncio.CancelledError:
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pass
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finally:
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self._wait_fut = None
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async def consume(self):
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while self.running:
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start = datetime.datetime.utcnow()
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with self.sessionmaker as session:
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logger.debug("Start consume run")
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fetches = [self.fetch_jobs(user) for user in session.query(User).filter(User.active == True).all()]
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await asyncio.gather(*fetches)
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session.commit()
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jobs = [self.process_job(job, session) for job in session.query(Job).options(joinedload(Job.user))]
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await asyncio.gather(*jobs)
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session.commit()
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await self._wait_since(start)
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def stop(self):
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self.running = False
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self._wait_fut.cancel()
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