[python-win32] Runnin Python app as service with separate console
Michael Li
mli at deform.com
Tue Apr 11 01:53:29 CEST 2006
Hi, Waldemar
In my previous email, I got
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Re: [python-win32] Runnin Python app as service with separate
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So I resend my previous email without big attachments again.
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Thank you very much for your code.
I still have difficulties to run my python application as a service well.
What I am trying to do is something like :
C:\python23\python.exe my_server.py -3 --pid=pid.file --slog=log.file
>run_log.file
When I open a DOS window, run the above command, no problem at all.
When I try to put it into a service, I got problem.
"install_3d_app_service.cpp" is a program to install
sftc3win.exe(sftc_3d_app_service.cpp)
into a Windows' service. Inside sftc_3d_app_service.cpp, it will spawn
"python".
After reboot the machine, no problem, everything works fine, please see
attached
picture python_running.JPG. The problem is that after I log off, the
"python" has gone.
Even if I log in as a non-administrative account, I log off, then the
"python" has gone,
even I am in the session of non-administrative account, I can not
terminate(End Process)
the "python" process. I am totally confused by this.
I also can use Windows' Scheduled Tasks to add a task as "At System
startup", I can run
it as a service, but after I log in/log off any account, the "python"
service has gone.
Can you or someone else point me a direction how to solve the problem?
Or I am in the wrong direction, I have to use the same way as you
described ?
One thing I want to mention is that my python scripts work at linux too,
and I want to keep it run at the DOS window for easier debugging.
I am using python2.3.
Best regards.
Michael Li
Waldemar Osuch wrote:
> On 4/6/06, Michael Li <mli at deform.com> wrote:
>
>> > Although it is not obvious from Twisted documentation it is trivial to
>> > run an application as a windows service as long as you use *.tac files
>> > to build it.
>>
>>Can you share your code ?
>>
>>I also have an application using Twisted, but I got problems to run as a
>>service.
>
>
> I am using py2exe with custom setup.py file.
> Additionally I have startup.tac and winservice.py
> - startup.tac - if you know Twisted then you know what goes into
> startup.tac :-).
> - winservice.py - is the stub file that gets compiled into
> winservice.exe. This is the file that you will register with Windows.
> winservice.exe -h will list all the options. I do not remember them
> at them moment.
> - setup.py - is almost standard setup file. You run it with python
> setup.py py2exe. The trick is to list all required modules
> explicitly. I list all except the modules that hold my Twisted
> application logic. The advantage is that I can replace the modules
> without recompiling. Only restart the service and the bug fix is
> implemented. Your admin will love you for that :-)
> The only problem is if you missed a required module the service will
> die silently when starting. Luckily the Python traceback gets
> recorded in Windows Application Log.
> Check it to see what the service is complaining about, add the missing
> part, rinse and repeat.
>
> See the attached files for an example.
> The original idea comes from:
> http://twistedmatrix.com/trac/browser/sandbox/moonfallen/
> See it for more documentation.
>
>
> ------------------------------------------------------------------------
>
> import sys
> import os
>
> import win32serviceutil, win32service
>
> basecf = "startup.tac"
> cftype = "python"
> svcname = "dispatcher"
> display = "Twisted Task Dispatcher"
> reactortype = "default"
>
> class ServiceControl(win32serviceutil.ServiceFramework):
>
> _svc_name_ = svcname
> _svc_display_name_ = display
>
> def SvcDoRun(self):
> from twisted.application import app
> app.installReactor(reactortype)
>
> from twisted.internet import reactor
> from twisted.application import service
> from twisted.python import util, log, logfile
>
> # look for a readable config file
> for cf in (util.sibpath(sys.executable, basecf),
> util.sibpath(__file__, basecf),
> basecf):
> try:
> open(cf, 'r').close()
> except EnvironmentError:
> continue
> else:
> startdir = os.path.dirname(cf)
> os.chdir(startdir)
> sys.path.insert(0, startdir)
> break
>
> lf = logfile.LogFile('%s.log' %svcname, 'logs')
> log.startLogging(lf)
> log.msg("Loading application from %s" % cf)
>
> service_app = service.loadApplication(cf, cftype)
> app.startApplication(service_app , False)
> reactor.run(installSignalHandlers=0)
>
> def SvcStop(self):
> self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
> from twisted.internet import reactor
> reactor.callFromThread(reactor.stop)
>
>
> if __name__ == '__main__':
> win32serviceutil.HandleCommandLine(ServiceControl)
>
>
> ------------------------------------------------------------------------
>
> import sys
>
> # without this section taskscheduler can not be found
> import py2exe.mf as modulefinder
> import win32com
> for p in win32com.__path__[1:]:
> modulefinder.AddPackagePath('win32com', p)
> for extra in ['win32com.taskscheduler']:
> __import__(extra)
> m = sys.modules[extra]
> for p in m.__path__[1:]:
> modulefinder.AddPackagePath(extra, p)
>
> from distutils.core import setup
> import py2exe
>
>
> setup(service = ['winservice'],
> zipfile = "lib/library.zip",
> data_files = (('', ['startup.tac',
> 'config.ini',
> 'backend.py',
> 'dbloader.py',
> 'dispatcher.py',
> 'xlsparser.py',
> ]),
> ('wsdl', ['wsdl/MFISLoader.wsdl',]),
> ('logs', []),
> ),
> options = {'global': {'verbose': '0'},
> 'py2exe': {'optimize': 2,
> 'dist_dir': 'dispatcher',
> 'excludes': ['perfmon'],
> 'dll_excludes': [],
> 'packages': ['twisted.application',
> 'twisted.python',
> 'twisted.web',
> 'elementtree',
> 'pyExcelerator',
> ],
> 'includes': ['datetime',
> 'pythoncom',
> 'cElementTree',
> 'cx_Oracle',
> 'twisted.mail.smtp',
> 'utils.batch',
> 'win32com.taskscheduler.taskscheduler',
> ],
> }
> },
> )
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