edbob/edbob/filemon_server.py
2012-05-07 15:56:45 -07:00

125 lines
4.1 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
################################################################################
#
# edbob -- Pythonic Software Framework
# Copyright © 2010-2012 Lance Edgar
#
# This file is part of edbob.
#
# edbob is free software: you can redistribute it and/or modify it under the
# terms of the GNU Affero General Public License as published by the Free
# Software Foundation, either version 3 of the License, or (at your option)
# any later version.
#
# edbob is distributed in the hope that it will be useful, but WITHOUT ANY
# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
# more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with edbob. If not, see <http://www.gnu.org/licenses/>.
#
################################################################################
"""
``edbob.filemon_server`` -- File Monitoring Service for Windows
"""
import os.path
import socket
import time
import Queue
import edbob
from edbob.win32 import file_is_free
from edbob.filemon import (MonitorProfile, WatcherWin32,
ACTION_CREATE, ACTION_UPDATE)
import sys
if sys.platform == 'win32': # docs should build for everyone
import win32serviceutil
import win32service
import win32event
import servicemanager
import win32api
class FileMonitorService(win32serviceutil.ServiceFramework):
"""
Implements edbob's file monitor Windows service.
"""
_svc_name_ = "Edbob File Monitor"
_svc_display_name_ = "Edbob : File Monitoring Service"
_svc_description_ = ("Monitors one or more folders for incoming files, "
"and performs configured actions as new files arrive.")
appname = 'edbob'
def __init__(self, *args):
win32serviceutil.ServiceFramework.__init__(self, *args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
socket.setdefaulttimeout(60)
self.stop_requested = False
def SvcStop(self):
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
win32event.SetEvent(self.hWaitStop)
self.stop_requested = True
def SvcDoRun(self):
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
servicemanager.PYS_SERVICE_STARTED,
(self._svc_name_, ''))
edbob.init(self.appname)
self.main()
def main(self):
self.monitored = {}
monitored = edbob.config.require('edbob.filemon', 'monitored')
monitored = monitored.split(',')
for m in monitored:
m = m.strip()
self.monitored[m] = MonitorProfile(m)
queue = Queue.Queue()
for key in self.monitored:
for d in self.monitored[key].dirs:
WatcherWin32(key, d, queue)
while not self.stop_requested:
try:
key, ftype, fpath, action = queue.get_nowait()
except Queue.Empty:
pass
else:
if ftype == 'file' and action in (
ACTION_CREATE, ACTION_UPDATE):
self.do_actions(key, fpath)
win32api.SleepEx(250, True)
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
servicemanager.PYS_SERVICE_STOPPED,
(self._svc_name_, ''))
def do_actions(self, key, path):
if not os.path.exists(path):
return
while not file_is_free(path):
# TODO: Add configurable timeout so long-open files can't hijack
# our prcessing.
time.sleep(0.25)
for action in self.monitored[key].actions:
if isinstance(action, tuple):
func = action[0]
args = action[1:]
else:
func = action
args = []
func = edbob.load_spec(func)
func(path, *args)
if __name__ == '__main__':
win32serviceutil.HandleCommandLine(FileMonitorService)