mirror of
https://github.com/moparisthebest/SickRage
synced 2024-08-13 16:53:54 -04:00
cec4ed573d
Switched out sqlite3 libs in favour of SQLAlchemy v0.9, will gradually migrate dialects and scheme to be fully SQLAlchemy compliant for using there ORM with sessions instead of direct. Fixed getEpisode function to stop making unrequired scene number conversions on already converted data thats available now from cache.
48 lines
1.2 KiB
Python
48 lines
1.2 KiB
Python
import datetime
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class NeverExpires(object):
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def expired(self):
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return False
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class Timer(object):
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"""
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A simple timer that will indicate when an expiration time has passed.
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"""
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def __init__(self, expiration):
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"Create a timer that expires at `expiration` (UTC datetime)"
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self.expiration = expiration
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@classmethod
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def after(cls, elapsed):
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"""
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Return a timer that will expire after `elapsed` passes.
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"""
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return cls(datetime.datetime.utcnow() + elapsed)
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def expired(self):
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return datetime.datetime.utcnow() >= self.expiration
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class LockTimeout(Exception):
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"An exception when a lock could not be acquired before a timeout period"
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class LockChecker(object):
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"""
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Keep track of the time and detect if a timeout has expired
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"""
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def __init__(self, session_id, timeout):
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self.session_id = session_id
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if timeout:
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self.timer = Timer.after(timeout)
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else:
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self.timer = NeverExpires()
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def expired(self):
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if self.timer.expired():
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raise LockTimeout(
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"Timeout acquiring lock for %(session_id)s" % vars(self))
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return False
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