checkUrl.py

#!/usr/bin/python
# this script can be used to monitor url's for uptime. 
# (C)opyright Nimret Sandhu - http://www.nimsoft.biz
import urllib2
import smtplib
import datetime
from email import *
from email.Utils import *
# list of url's which needs to be monitored
urls = ('http://your.domain.org/some/url', 'http://another.domain.com')
# email settings
mailServer = 'your.mailserver.com'
fromAddr = 'your app < your@app.com>'            # from field
toAddr = 'your@email.com'                        # to field
subject = 'Error loading Url(s)'

badUrls = [] # stores the bad urls for reporting
def ok( url):
    'checks to see if an url gives a 404 or not'
    try:
        f = urllib2.urlopen( url)
        return 1
    except:
        return 0
def error( badUrls):
    'sends out an error email with bad list of urls'
    msg = Message.Message()
    msg['From'] = fromAddr
    msg['To'] = toAddr
    msg['Date'] = formatdate(localtime=True)
    msg['Subject'] = subject
    text = 'Could not load:rn'
    for badUrl in badUrls:
        text = text + ' ' + badUrl + 'rn'
    msg.set_payload( text)
    s = smtplib.SMTP( mailServer)
    s.sendmail( fromAddr, toAddr, msg.as_string())
    s.quit()
# MAIN SCRIPT START
for url in urls:
    if not ok( url):
        badUrls.append( url)
# send an email if there were any bad urls
if len( badUrls) > 0:
    error( badUrls)