Simple web server watchdog

gistfile1.py

#!/usr/bin/python
# -*- coding: utf-8 -*-
"""  

Simple web server watchdog, edit constants and stop start commands
preferably run with daemon
http://www.jejik.com/articles/2007/02/a_simple_unix_linux_daemon_in_python/

""" 

# Import's
import urllib2
import subprocess
import time
import logging
import os
import datetime

# Constants
LOG_FILE = 'log/watchdog.log'
URL = 'url to test'
EXPECTING = 'Some text'

# Opening log
logging.basicConfig(level=logging.INFO,
                    format='%(asctime)s %(levelname)s %(message)s',
                    filename=LOG_FILE)

def restart(messge):
    """Restart service and logg message"""
    subprocess.check_call('/etc/init.d/server stop')
    subprocess.check_call('/etc/init.d/server start')
    logging.info('Restart {0}'.format(message))
    time.sleep(60)
    
def main():
    """Main"""
    while True:
        hour = datetime.datetime.now().hour
        try:
            tw = urllib2.urlopen(URL, timeout=5)
        except (KeyboardInterrupt, SystemExit):
            raise
        except Exception, e:
            restart(e)
            continue
        if tw.code != 200:
            restart('Wrong return')
            continue
        if EXPECTING not in tw.read():
            restart('Missig page')
            continue
        tw.close()
        if 7 < hour < 18: #working hours check every 10s
            time.sleep(10)
        else:
            time.sleep(30)

if __name__ == '__main__':
    main()