Monitoring filesystems events with inotify

filewatcher.py

#!/usr/bin/env python
# coding: utf-8

# https://github.com/seb-m/pyinotify
from pyinotify import WatchManager, Notifier, ProcessEvent, IN_CREATE, IN_MODIFY, IN_DELETE
import os, sys


class FileHandler(ProcessEvent):
    def process_IN_CREATE(self, event):
        print "create file: %s " % os.path.join(event.path, event.name)

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

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

def watcher(path = None):
    path = path or '.'
    manager = WatchManager()
    manager.add_watch(path, IN_CREATE | IN_MODIFY | IN_DELETE, rec = True)
    notifier = Notifier(manager, FileHandler())

    print 'File watcher start at "%s" ...' % path
    while True:
        try:
            notifier.process_events()
            if notifier.check_events():
                notifier.read_events()
        except KeyboardInterrupt:
            notifier.stop()
            break

if __name__ == "__main__":
    watcher(len(sys.argv) > 1 and sys.argv[1])