#!/usr/bin/env python

from threading import Timer

import sys

import time

import copy

import os

from subprocess import call

class EventLoopDelaySpawn(object):

"""An Event Loop Class That Spawns a Method in a Delayed Thread"""

def __init__(self, poll=3, wait=1, verbose=True, dir1="/home", dir2="/tmp"):

self.poll = int(poll)

self.wait = int(wait)

self.verbose = verbose

self.dir1 = dir1

self.dir2 = dir2

def poller(self):

"""Creates Poll Interval"""

time.sleep(self.poll)

if self.verbose:

print "Polling at %s sec interval" % self.poll

def action(self):

if self.verbose:

print "waiting %s seconds to run Action" % self.wait

#do_something_meaningful()

#ret = call("rsync -av --delete %s/ %s" % (self.dir1, self.dir2), shell=True)

print 'hello world'

def eventHandler(self):

#if two directories contain same file names

if os.listdir(self.dir1) != os.listdir(self.dir2):

print os.listdir(self.dir1)

t = Timer((self.wait), self.action)

t.start()

if self.verbose:

print "Event Registered"

else:

if self.verbose:

print "No Event Registered"

def run(self):

"""Runs an event loop with a delayed action method"""

try:

while True:

self.eventHandler()

self.poller()

except Exception, err:

print "Error: %s " % err

finally:

sys.exit(0)

if __name__ == '__main__':

E = EventLoopDelaySpawn()

E.run()