#!/usr/bin/env python

""" 
    filemonitoring for a given filedirectory
"""

import os
import sys

try:
    import platform
except ImportError, e:
    print e[0]
    sys.exit() 

try:
    from subprocess import Popen, PIPE
except ImportError, e:
    print e[0]
    print "Please"
    sys.exit()

if not os.path.isdir('/proc/sys/fs/inotify'):
        print "Please enable in the kernelconfiguration inotify."
        print "grep \"INOTIFY\" /boot/config-`uname -r`"
        sys.exit()

try:
    from pyinotify import WatchManager, EventsCodes, ProcessEvent, Notifier 
except ImportError, e:
    print e[0]
    print "Please install pyinotify."
    print "For Debian do as root user 'apt-get install python-pyinotify'."
    print "For Gentoo do as root user 'emerge -av pyinotify'."
    print "For other distributions use your package manager." 
    print "Or download it from website 'http://trac.dbzteam.org/pyinotify'."
    sys.exit()

dir_to_monitoring = "/var/run"
events_codes = EventsCodes.ALL_EVENTS

# initial WatchManager
wm = WatchManager()

# override build in methodes
class ProcessAction(ProcessEvent):
    def process_IN_CREATE(self, event):
        print "event: %s %s" % (event.event_name, os.path.join(event.path, event.name))

    def process_IN_DELETE(self, event):
        print "event: %s %s" % (event.event_name, os.path.join(event.path, event.name))

    def process_IN_OPEN(self, event):
        print "event: %s %s" % (event.event_name, os.path.join(event.path, event.name))

    def process_IN_MODIFY(self, event):
        print "evnet: %s, %s" % (event.event_name, os.path.join(event.path, event.name))

    def process_IN_CLOSE_WRITE(self, event):
        print "event: %s, %s" % (event.event_name, os.path.join(event.path, event.name))

    def process_IN_ACCESS(self, event):
        print "event: %s, %s" % (event.event_name, os.path.join(event.path, event.name))
    
    def process_IN_CLOSE_NOWRITE(self, event):
        print "event: %s, %s" % (event.event_name, os.path.join(event.path, event.name))
    

# initial Notifier 
notifier = Notifier(wm, ProcessAction())

# add the directory to WatchManager
wm.add_watch(dir_to_monitoring, events_codes)

# run it in loop till keyboar str + ctl is pressing
while True:
    try:
        # process the queue of events as explained above
        notifier.process_events()
        if notifier.check_events():
            # read notified events and enqeue them
            notifier.read_events()
        # you can do some tasks here ...            

    except KeyboardInterrupt:
        # destroy the inotify's instance ont this interrup 
        # stop monitoring
        notifier.stop()
        break