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Estoy intentando crear un servidor XML-RPC como un servicio de Windows.
El servidor XML-RPC puede obtener y poner archivos (como FTP) y
también ejecutar comandos a través de os.system() que le envía el cliente remoto
.Servidor Python XML-RPC como servicio de Windows
Estoy intentando encapsular el servidor en el servicio de Windows
bucle de evento.
Al crear el servicio no hay problema.
python.exe remoteServer.py --startup=auto install
Installing service XMLRPCServerService
Service installed
Al iniciar el servicio, no hay ningún problema.
python.exe remoteServer.py start
Starting service XMLRPCServerService
Al detener el servicio, no hay ningún problema.
python.exe remoteServer.py stop
Stopping service XMLRPCServerService
Al reiniciar el servicio, hay un problema.
python.exe remoteServer.py start
Starting service XMLRPCServerService
Error starting service: An instance of the service is already running.
Mirando el monitor de proceso, veo un proceso "pythonservice.exe" que es
aún en marcha.
Éstos son los contenidos de remoteServer.py:
#!/bin/python
# $Revision: 1.7 $
# $Author: dot $
# $Date: 2011/12/07 01:16:13 $
LISTEN_HOST='0.0.0.0'
LISTEN_PORT=8000
import os
import SocketServer
import BaseHTTPServer
import SimpleHTTPServer
import xmlrpclib
import SimpleXMLRPCServer
import socket
import httplib
import inspect
import win32service
import win32serviceutil
import win32api
import win32con
import win32event
import win32evtlogutil
class XMLRPCServer(BaseHTTPServer.HTTPServer,SimpleXMLRPCServer.SimpleXMLRPCDispatcher):
def __init__(self, server_address, HandlerClass, logRequests=True):
""" XML-RPC server. """
self.logRequests = logRequests
SimpleXMLRPCServer.SimpleXMLRPCDispatcher.__init__(self,False,None)
SocketServer.BaseServer.__init__(self, server_address, HandlerClass)
self.socket = socket.socket(
socket.AF_INET, socket.SOCK_STREAM)
self.server_bind()
self.server_activate()
class XMLRPCRequestHandler(SimpleXMLRPCServer.SimpleXMLRPCRequestHandler):
""" XML-RPC request handler class. """
def setup(self):
self.connection = self.request
self.rfile = socket._fileobject(self.request, "rb", self.rbufsize)
self.wfile = socket._fileobject(self.request, "wb", self.wbufsize)
def do_POST(self):
""" Handles the HTTPS request.
It was copied out from SimpleXMLRPCServer.py and modified to shutdown the socket cleanly.
"""
try:
# get arguments
data = self.rfile.read(int(self.headers["content-length"]))
# In previous versions of SimpleXMLRPCServer, _dispatch
# could be overridden in this class, instead of in
# SimpleXMLRPCDispatcher. To maintain backwards compatibility,
# check to see if a subclass implements _dispatch and dispatch
# using that method if present.
response = self.server._marshaled_dispatch(
data, getattr(self, '_dispatch', None)
)
except:
# This should only happen if the module is buggy
# internal error, report as HTTP server error
self.send_response(500)
self.end_headers()
else:
# got a valid XML RPC response
self.send_response(200)
self.send_header("Content-type", "text/xml")
self.send_header("Content-length", str(len(response)))
self.end_headers()
self.wfile.write(response)
# shut down the connection
self.wfile.flush()
self.connection.shutdown() # Modified here!
def XMLRPCServerGet(HandlerClass = XMLRPCRequestHandler,ServerClass = XMLRPCServer):
"""Test xml rpc over http server"""
class xmlrpc_registers:
def _listMethods(self):
return list_public_methods(self)
def _methodHelp(self, method):
f = getattr(self, method)
return inspect.getdoc(f)
def list(self, dir_name):
"""list(dir_name) => [<filenames>]
Returns a list containing the contents of the named directory.
"""
return os.listdir(dir_name)
def put(self,filename,filedata):
try:
with open(filename, "wb") as handle:
handle.write(filedata.data)
handle.close()
return True
except Exception,ex:
return 'error'
def get(self,filepath):
try:
handle = open(filepath)
return xmlrpclib.Binary(handle.read())
handle.close()
except:
return 'error'
def system(self, command):
result = os.system(command)
return result
server_address = (LISTEN_HOST, LISTEN_PORT) # (address, port)
server = ServerClass(server_address, HandlerClass)
server.register_introspection_functions()
server.register_instance(xmlrpc_registers())
#sa = server.socket.getsockname()
return server
#server.serve_forever()
#print "Serving HTTP on", sa[0], "port", sa[1]
#try:
# #print 'Use Control-C to exit'
# server.serve_forever()
#except KeyboardInterrupt:
# #print 'Exiting'
class XMLRPCServerService(win32serviceutil.ServiceFramework):
_svc_name_ = "XMLRPCServerService"
_svc_display_name_ = "XMLRPCServerService"
_svc_description_ = "Tests Python service framework by receiving and echoing messages over a named pipe"
def __init__(self, args):
win32serviceutil.ServiceFramework.__init__(self, args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
def SvcStop(self):
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
win32event.SetEvent(self.hWaitStop)
def SvcDoRun(self):
import servicemanager
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,servicemanager.PYS_SERVICE_STARTED,(self._svc_name_, ''))
self.timeout = 100
server = XMLRPCServerGet()
#server.serve_forever()
while 1:
# Wait for service stop signal, if I timeout, loop again
rc = win32event.WaitForSingleObject(self.hWaitStop, self.timeout)
# Check to see if self.hWaitStop happened
if rc == win32event.WAIT_OBJECT_0:
# Stop signal encountered
server.shutdown()
servicemanager.LogInfoMsg("XMLRPCServerService - STOPPED")
break
else:
server.handle_request()
servicemanager.LogInfoMsg("XMLRPCServerService - is alive and well")
def ctrlHandler(ctrlType):
return True
if __name__ == '__main__':
win32api.SetConsoleCtrlHandler(ctrlHandler, True)
win32serviceutil.HandleCommandLine(XMLRPCServerService)
No estoy seguro de si esta es la raíz del problema, pero parece que le falta una llamada a 'self.ReportServiceStatus (win32service.SERVICE_STOPPED) ' al final de su método SvcStop. –
@David K. Hess ¡Tienes toda la razón! ¡Estaba escondido a plena vista! –
Gracias! Seguí adelante y lo agregué como respuesta. –