Coder speaks louder. HTH.
#Pseudo code. Not tested nor proven.
class TimeoutTimerPool(object):
"""A pool that tracks a set of users and their active session.
Tipically used as a singleton."""
from threading import Timer
def __init__(self):
self.pool = {}
def expiration_handler(self, session_id, user_id):
#Take action with session_id and/or user_id here
pass
def register_user_presence(self, session_id, user_id):
"""Tracks user activity/presence. No magic mojo here, must be
called manually (or integrated in some middleware)."""
# Timers can be reset. So, we just dispose the current and create another.
self.unregister_session(session_id)
self.pool[session_id] = Timer(SESSION_TIMEOUT_OR_SOMETHING,
self.expiration_handler, session_id, user_id)
self.pool[session_id].start()
def untrack_session(self, session_id):
"""Forfeits user tracking. For logouts and such."""
if self.pool.haskey(session_id):
current_timer = self.pool[session_id]
if current_timer.isAlive():
current_time.cancel()
# Don't kow if this is the right way to dispose a Timer
del self.pool[session_id]
Cheers,
Paulo Köch
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