# -*- coding: utf-8 -*-
"""
A windows service wrapper for the py.execnet socketserver.
To use, run:
python socketserverservice.py register
net start ExecNetSocketServer
"""
import socketserver
import sys
import threading
import servicemanager
import win32event
import win32evtlogutil
import win32service
import win32serviceutil
appname = "ExecNetSocketServer"
class SocketServerService(win32serviceutil.ServiceFramework):
_svc_name_ = appname
_svc_display_name_ = "%s" % appname
_svc_deps_ = ["EventLog"]
def __init__(self, args):
# The exe-file has messages for the Event Log Viewer.
# Register the exe-file as event source.
#
# Probably it would be better if this is done at installation time,
# so that it also could be removed if the service is uninstalled.
# Unfortunately it cannot be done in the 'if __name__ == "__main__"'
# block below, because the 'frozen' exe-file does not run this code.
#
win32evtlogutil.AddSourceToRegistry(
self._svc_display_name_, servicemanager.__file__, "Application"
)
win32serviceutil.ServiceFramework.__init__(self, args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
self.WAIT_TIME = 1000 # in milliseconds
def SvcStop(self):
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
win32event.SetEvent(self.hWaitStop)
def SvcDoRun(self):
# Redirect stdout and stderr to prevent "IOError: [Errno 9]
# Bad file descriptor". Windows services don't have functional
# output streams.
sys.stdout = sys.stderr = open("nul", "w")
# Write a 'started' event to the event log...
win32evtlogutil.ReportEvent(
self._svc_display_name_,
servicemanager.PYS_SERVICE_STARTED,
0, # category
servicemanager.EVENTLOG_INFORMATION_TYPE,
(self._svc_name_, ""),
)
print("Begin: %s" % self._svc_display_name_)
hostport = ":8888"
print("Starting py.execnet SocketServer on %s" % hostport)
serversock = socketserver.bind_and_listen(hostport)
thread = threading.Thread(
target=socketserver.startserver, args=(serversock,), kwargs={"loop": True}
)
thread.setDaemon(True)
thread.start()
# wait to be stopped or self.WAIT_TIME to pass
while True:
result = win32event.WaitForSingleObject(self.hWaitStop, self.WAIT_TIME)
if result == win32event.WAIT_OBJECT_0:
break
# write a 'stopped' event to the event log.
win32evtlogutil.ReportEvent(
self._svc_display_name_,
servicemanager.PYS_SERVICE_STOPPED,
0, # category
servicemanager.EVENTLOG_INFORMATION_TYPE,
(self._svc_name_, ""),
)
print("End: %s" % appname)
if __name__ == "__main__":
# Note that this code will not be run in the 'frozen' exe-file!!!
win32serviceutil.HandleCommandLine(SocketServerService)
