python inotify example

[alef13]

Simple code to monitor CLOSE events on specific directory using Python pynotify.



#!/usr/bin/env python

import os, sys
from pyinotify import WatchManager, Notifier, ProcessEvent, EventsCodes

def Monitor(path):
class PClose(ProcessEvent):
def process_IN_CLOSE(self, event):
f = event.name and os.path.join(event.path, event.name) or event.path
print 'close event: ' + f

wm = WatchManager()
notifier = Notifier(wm, PClose())
wm.add_watch(path, EventsCodes.IN_CLOSE_WRITE|EventsCodes.IN_CLOSE_NO WRITE)

try:
while 1:
notifier.process_events()
if notifier.check_events():
notifier.read_events()
except KeyboardInterrupt:
notifier.stop()
return


if __name__ == '__main__':
try:
path = sys.argv[1]
except IndexError:
print 'use: %s dir' % sys.argv[0]
else:
Monitor(path)

[skeswani]

I happened to write a similar application to monitor any arbitrary event and run a system command when it happens, albeit, this is in C.

http://www.qautils.org/mediawiki/index.php/Watchfs

Was usefull when testing applications

[sanraj83]

Hi Alef;

When I try to run this code I get the following error. Do you know why ?

<type 'exceptions.AttributeError'>: type object 'EventsCodes' has no attribute 'IN_CLOSE_WRITE'


Can you give me your thoughts / tell me where I am erring ?

Thanks

RxS

[catchmeifyoutry]

Hi Alef;

When I try to run this code I get the following error. Do you know why ?

<type 'exceptions.AttributeError'>: type object 'EventsCodes' has no attribute 'IN_CLOSE_WRITE'


Can you give me your thoughts / tell me where I am erring ?

Thanks

RxS

Hm, his/her code works for me, what version of pyinotify are you using?
I got 0.7.1-1 from the Hardy repository.
Otherwise, try these python commands


import pyinotify
print dir(pyinotify.EventsCodes)

and see if IN_CLOSE_WRITE shows up.

[pic123]

same happend to me - until i realised that there is a major syntax change in version 0.8.xxx. Read the NEWS file - helps always a lot.

[yahmad]

HI,

I was wondering if someone could help me with an issue I am having with the pyinotify lib that is built on inotiify.

I am currently trying to monitor some files and directories on a samba server that is mounted on my linux server. However, any changes made by others on the samba server are not picked up by my script. If I make changes to files on the server while I am logged in to my linux server, then I see events raised.

Do any special configuration details have to be set?

Thanks.

[dwiel]

The news that pic123 is referring to is:


EventsCodes.IN_* replaced by IN_* (avalaible at the pyinotify's scope)

[jav]

So, in regard to the mentioned changes in 8.
How should I change my software?

Today I'm using

exec("mask |= EventsCodes." + evcode)

I'm guessing it should be something like

exec("mask |= " + evcode)
But with some namespace ... something...

[juancarlospaco]

1 import per line :)

[6ixth]

The docs, tutorials and websites are outdated.
The only thing up to date i found are the examples here:
https://gith*******/seb-m/pyinotify/tree/master/python2/examples

If you are getting errors like


<type 'exceptions.AttributeError'>: type object 'EventsCodes' has no attribute 'IN_*'

Then you have to do something like


import pyinotify
mask = pyinotify.IN_MODIFY # watched events

[alfalfa55]

Hm, his/her code works for me, what version of pyinotify are you using?
I got 0.7.1-1 from the Hardy repository.
Otherwise, try these python commands


import pyinotify
print dir(pyinotify.EventsCodes)
and see if IN_CLOSE_WRITE shows up.

I get:


Python 2.6.6 (r266:84292, Nov 28 2011, 23:30:22)
[GCC 4.5.3] on linux3
Type "help", "copyright", "credits" or "license" for more information.
>>> import pyinotify
>>> print dir(pyinotify.EventsCodes)
['ALL_FLAGS', 'ALL_VALUES', 'EVENT_FLAGS', 'FLAG_COLLECTIONS', 'OP_FLAGS', 'SPECIAL_FLAGS', '__class__', '__delattr__', '__dict__', '__doc__', '__format__', '__getattribute__', '__hash__', '__init__', '__module__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', '__weakref__', 'maskname']
>>>