ogagent/src/opengnsys/windows/OGAgentService.py

125 lines
5.0 KiB
Python

# -*- coding: utf-8 -*-
#
# Copyright (c) 2014 Virtual Cable S.L.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
# * Neither the name of Virtual Cable S.L. nor the names of its contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
'''
@author: Adolfo Gómez, dkmaster at dkmon dot com
'''
from __future__ import unicode_literals
# pylint: disable=unused-wildcard-import, wildcard-import
import win32serviceutil # @UnresolvedImport, pylint: disable=import-error
import win32service # @UnresolvedImport, pylint: disable=import-error
import win32security # @UnresolvedImport, pylint: disable=import-error
import win32net # @UnresolvedImport, pylint: disable=import-error
import win32event # @UnresolvedImport, pylint: disable=import-error
import win32com.client # @UnresolvedImport, @UnusedImport, pylint: disable=import-error
import pythoncom # @UnresolvedImport, pylint: disable=import-error
import servicemanager # @UnresolvedImport, pylint: disable=import-error
import os
from opengnsys import operations
from opengnsys.service import CommonService
from opengnsys.log import logger
class OGAgentSvc(win32serviceutil.ServiceFramework, CommonService):
'''
This class represents a Windows Service for managing Agent interactions
with OpenGnsys Server
'''
_svc_name_ = "OGAgent"
_svc_display_name_ = "OpenGnsys Agent Service"
_svc_description_ = "OpenGnsys Agent for Operating Systems"
# 'System Event Notification' is the SENS service
_svc_deps_ = ['EventLog']
def __init__(self, args):
win32serviceutil.ServiceFramework.__init__(self, args)
CommonService.__init__(self)
self.hWaitStop = win32event.CreateEvent(None, 1, 0, None)
self._user = None
def SvcStop(self):
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
self.isAlive = False
win32event.SetEvent(self.hWaitStop)
SvcShutdown = SvcStop
def notifyStop(self):
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
servicemanager.PYS_SERVICE_STOPPED,
(self._svc_name_, ''))
def doWait(self, miliseconds):
win32event.WaitForSingleObject(self.hWaitStop, miliseconds)
def SvcDoRun(self):
'''
Main service loop
'''
try:
logger.debug('running SvcDoRun')
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
servicemanager.PYS_SERVICE_STARTED,
(self._svc_name_, ''))
# call the CoInitialize to allow the registration to run in an other
# thread
logger.debug('Initializing com...')
pythoncom.CoInitialize()
# Initialize remaining service data
self.initialize()
except Exception: # Any init exception wil be caught, service must be then restarted
logger.exception()
logger.debug('Exiting service with failure status')
os._exit(-1) # pylint: disable=protected-access
# *********************
# * Main Service loop *
# *********************
try:
while self.isAlive:
# Pumps & processes any waiting messages
pythoncom.PumpWaitingMessages()
win32event.WaitForSingleObject(self.hWaitStop, 1000)
except Exception as e:
logger.error('Caught exception on main loop: {}'.format(e))
logger.debug('Exited main loop, deregistering SENS')
self.terminate() # Ends IPC servers
self.notifyStop()
if __name__ == '__main__':
win32serviceutil.HandleCommandLine(OGAgentSvc)