###################################################################################################################
import os
import sys
class Daemonize:
""" Generic class for creating a daemon"""
def daemonize(self):
try:
#this process would create a parent and a child
pid = os.fork()
if pid > 0:
# take care of the first parent
sys.exit(0)
except OSError, err:
sys.stderr.write("Fork 1 has failed --> %d--[%s]\n" % (err.errno,
err.strerror))
sys.exit(1)
#change to root
os.chdir('/')
#detach from terminal
os.setsid()
# file to be created ?
os.umask(0)
try:
# this process creates a parent and a child
pid = os.fork()
if pid > 0:
print "Daemon process pid %d" % pid
#bam
sys.exit(0)
except OSError, err:
sys.stderr.write("Fork 2 has failed --> %d--[%s]\n" % (err.errno,
err.strerror))
sys.exit(1)
sys.stdout.flush()
sys.stderr.flush()
def start_daemon(self):
self.daemonize()
self.run_daemon()
def run_daemon(self):
"""override"""
pass
###################################################################################################################
import os
import smtplib
from smtplib import SMTPException
import time
from Daemonize import Daemonize
class WatchFile(Daemonize):
def __init__(self, file_path, size_limit=15728640):
self.file = os.path.realpath(file_path)
print '---'
assert os.path.isfile(self.file), '%s does not exist' % self.file
print '+++'
self.smtpserver = '*path-to-your-host*'
self.recipient_list = ['recipient@domain']
self.sender = 'sender@domain'
self.file_size_limit = size_limit
self.email_body = 'path-to-your-email-template'
def send_an_email(self):
email_body = open(self.email_body, 'r').read()
session_obj = smtplib.SMTP(self.smtpserver)
try:
session_obj.sendmail(self.sender, self.recipient_list,
email_body)
except SMTPException:
print "Unable to send emails."
finally:
session_obj.close()
def watch(self):
current_file_size = os.path.getsize(self.file)
if current_file_size > self.file_size_limit:
self.send_an_email()
def run_daemon(self):
while 1:
self.watch()
time.sleep(3600)
if __name__ == '__main__':
watchdog = WatchFile('path-to-your-inbox')
watchdog.start_daemon()
Diff to Previous Revision
--- revision 1 2012-03-14 08:48:29
+++ revision 2 2012-03-14 11:18:42
@@ -46,6 +46,7 @@
self.run_daemon()
def run_daemon(self):
+ """override"""
pass
###################################################################################################################
