[python-win32] Simple service...
Larry Bates
lbates at syscononline.com
Fri Sep 3 23:14:49 CEST 2004
You must check to see if stop signal has been received
inside your loop. You should set a timeout (not INFINITE).
def SvcDoRun(self):
self.timeout=30*60*1000 # Sleep for 30 minutes between runs
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
#
break
my_main()
and have a SvcStop method:
def SvcStop(self):
#---------------------------------------------------------------------
# Before we do anything, tell SCM we are starting the stop process.
#---------------------------------------------------------------------
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
#---------------------------------------------------------------------
# And set my event
#---------------------------------------------------------------------
win32event.SetEvent(self.hWaitStop)
return
This runs my_main. When my_main returns, it goes to sleep for 30 minutes and
then it runs again (unless stop signal is received).
HTH,
Larry Bates
Syscon, Inc.
Message: 5
Date: Fri, 3 Sep 2004 13:40:24 -0400 (EDT)
From: fmml at cedval.org
Subject: [python-win32] Simple service...
To: python-win32 at python.org
Message-ID:
<2352.192.168.41.52.1094233224.squirrel at whoami3.cedval.org>
Content-Type: text/plain;charset=iso-8859-1
Hi all,
I have a script which has a main routine that wakes up every 30 minutes,
performs a few things and go back to sleep.
I would like to make my script a service. So I wrote a second script that
imports modules from the first one.
In my code I have the SVCDoRun routine were I run my "my_main()" script
main loop and it does work, but can't stop the service from the service
manager.
Goes like this:
def SvcDoRun(self):
win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)
while 1:
my_main()
How can I run my script while waiting for the "stop service" signal?
Any ideas?
Thanks in advance,
Francois
------------------------------
Message: 6
Date: Fri, 03 Sep 2004 19:59:22 +0200
From: Thomas Heller <theller at python.net>
Subject: [python-win32] Errors (?) in win32con.py
To: python-win32 at python.org
Message-ID: <d613b5dx.fsf at python.net>
Content-Type: text/plain; charset=us-ascii
I'm currently writing code to parse the windows header files and create
Python code from them - see recent articles in the ctypes-users mailing
list.
When I compare the output of my tools with the contents in win32con.py,
I see several differences.
One example is the (arbitrarily chosen) CDN_SELCHANGE symbol.
In the commdlg.h file I have I see this:
#define CDN_FIRST (0U - 601U)
...
#define CDN_SELCHANGE (CDN_FIRST - 0x0001)
Ignoring signed/unsigned issues (and not showing the FutureWarning from
Python 2.3):
>>> hex(0 - 601 - 1)
'0xfffffda6'
>>> import win32con
>>> hex(win32con.CDN_SELCHANGE)
'0x4efda6'
>>>
Looking into the win32con.py source code:
PY_0U = 5177344
CDN_FIRST = (PY_0U-601)
CDN_SELCHANGE = (CDN_FIRST - 1)
I'm puzzled. What is PY_0U?
hex(5177344) is 0x4F0000, but that doesn't enlighten me.
Reading about the CDN_* codes in MSDN, they are used in the NMHDR
structure's 'code' field, which is UINT. So the value *is* 32-bit.
Thomas
------------------------------
Message: 7
Date: Fri, 03 Sep 2004 13:08:43 -0500
From: "Jens B. Jorgensen" <jens.jorgensen at tallan.com>
Subject: Re: [python-win32] Simple service...
To: fmml at cedval.org
Cc: python-win32 at python.org
Message-ID: <4138B32B.2000803 at tallan.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
fmml at cedval.org wrote:
>Hi all,
>
>I have a script which has a main routine that wakes up every 30 minutes,
>performs a few things and go back to sleep.
>
>I would like to make my script a service. So I wrote a second script that
>imports modules from the first one.
>
>In my code I have the SVCDoRun routine were I run my "my_main()" script
>main loop and it does work, but can't stop the service from the service
>manager.
>
>Goes like this:
>
>def SvcDoRun(self):
> win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)
>
> while 1:
> my_main()
>
>
>How can I run my script while waiting for the "stop service" signal?
>
>
There are a variety of ways. You could run my_main() in another thread:
def worker_thread() :
while 1 :
my_main()
def SvcDoRun(self) :
thread.start_new_thread(worker_thread, ())
win32event.WaitForSingleObject(self.hWaitStop, win32event.INFINITE)
sys.exit(0)
but then again if you're just going to do something every 30 minutes and
it doesn't take long then why not:
def SvcDoRun(self) :
thread.start_new_thread(worker_thread, ())
while 1 :
retval = win32event.WaitForSingleObject(self.hWaitStop, 30*60*1000)
if retval == win32event.WAIT_OBJECT_0 :
sys.exit(0)
my_main()
and take the waiting 30 minutes bit out of my_main?
Note: I don't see how your above code would run my_main at all since
you're waiting indefinitely for the stop signal, something wrong there.
>
>Any ideas?
>
>
>Thanks in advance,
>
>Francois
>
>
>
>
>_______________________________________________
>Python-win32 mailing list
>Python-win32 at python.org
>http://mail.python.org/mailman/listinfo/python-win32
>
>
--
Jens B. Jorgensen
jens.jorgensen at tallan.com
"With a focused commitment to our clients and our people, we deliver value
through customized technology solutions"
------------------------------
Message: 8
Date: Fri, 3 Sep 2004 20:51:53 +0200
From: Marek Kubica <pythonmailing at web.de>
Subject: [python-win32] COM Browser
To: Python-win32 mailinglist <python-win32 at python.org>
Message-ID: <20040903205153.00000320 at galileo>
Content-Type: text/plain; charset=US-ASCII
Hello!
Do you know any good standalone COM Browser? I was looking in Google,
but it only finds the word 'browser' on .com servers (as you can imagene
there are missions of these pages).
I just found COM Explorer , but is does not show any Functions of the
libraries :(
greets,
Marek
------------------------------
Message: 9
Date: Fri, 3 Sep 2004 14:29:30 -0500
From: Lewis Franklin <lewis.franklin at gmail.com>
Subject: Re: [python-win32] Hidden CLI
To: "Jens B. Jorgensen" <jens.jorgensen at tallan.com>
Cc: python-win32 at python.org
Message-ID: <80150ed6040903122918d7dc9c at mail.gmail.com>
Content-Type: text/plain; charset=US-ASCII
Jens,
I like your idea (I'm modifying code that someone else wrote and they
apparantly liked curl). However, I was wondering if that works with a
secure connection. I'm actually accessing https://www.example.com. I
should have put that earlier, but missed the 's'. The information in
the module reference was cryptic to me.
My apologies to the win32 thread as well, since most of this
discussion has in actuality had little to do with Windows API.
Lewis
On Fri, 03 Sep 2004 12:08:28 -0500, Jens B. Jorgensen
<jens.jorgensen at tallan.com> wrote:
> I have heard it said that it's possible to get a console window to run
> minimized. I haven't tried it myself but this is probably your best bet.
> To my knowledge I have not heard of a way to get it not to show up at all.
>
> However, noticing that all your doing is running curl instead I'm
> wondering why you're bothering to run curl at all? Can you not do the
> same with:
>
> import urllib
>
> f = open('setup.bat', 'wt')
> httpf = urllib.urlopen('http://www.example.org?a=user^&b=pass')
> f.write(httpf.read())
>
> That'd be less overhead than spawning an external program anyway!
>
>
>
> Lewis Franklin wrote:
>
> >My question is probably simple to those who have been programming in
> >Windows for some time, but I am having a difficult time with a
> >'simple' problem.
> >
> >I have written a program that consists simply of three buttons (using
> >wxPython). Clicking one of those buttons triggers an event where curl
> >is executed and the information returned is stored into a file. The
> >command is simply:
> >
> >curl http://www.example.org?a=user^&b=pass -o setup.bat
> >
> >I can run this command without any problem. However, the 'problem'
> >that arises is that while curl is being run a Command Prompt appears.
> >Since this app is for techno-phobes and can only imagine how much
> >several windows opening and closing on their own would freak them out,
> >I am trying to keep the user from seeing this window. I was wondering
> >if there was a way to run the command without having it open a Command
> >Prompt.
> >
> >I hope that I have been clear enough in stating my question and
> >situation. Thank you in advance for any assistance you can offer.
> >Being new to Python on Windows I need help with what may seem a small
> >task to others.
> >
> >Lewis
> >_______________________________________________
> >Python-win32 mailing list
> >Python-win32 at python.org
> >http://mail.python.org/mailman/listinfo/python-win32
> >
> >
>
> --
> Jens B. Jorgensen
> jens.jorgensen at tallan.com
>
> "With a focused commitment to our clients and our people, we deliver value
through customized technology solutions"
>
>
------------------------------
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