1 pièce(s) jointe(s)
Service Windows Python ne marche qu'en DEBUG
Hello,
J'ai écris un petit service windows en python en utilisant la class SMWinservice de Davide Mastromatteo.
Ce service a besoin d'exécuter un script python. Python3 est bien installé sur ma machine, toutes les variables d'ENV bien définies (user et system). Pourtant, python n'est trouvé que dans le cas où le service run en debug où le PATH de python.exe explicitement donné dans le call du script:
fichier E:\tmp\SMWinservice.py (cf pièce jointe)
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import socket
import win32serviceutil
import servicemanager
import win32event
import win32service
class SMWinservice(win32serviceutil.ServiceFramework):
'''Base class to create winservice in Python'''
_svc_name_ = 'pythonService'
_svc_display_name_ = 'Python Service'
_svc_description_ = 'Python Service Description'
@classmethod
def parse_command_line(cls):
'''
ClassMethod to parse the command line
'''
win32serviceutil.HandleCommandLine(cls)
def __init__(self, args):
'''
Constructor of the winservice
'''
win32serviceutil.ServiceFramework.__init__(self, args)
self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
socket.setdefaulttimeout(60)
def SvcStop(self):
'''
Called when the service is asked to stop
'''
self.stop()
self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
win32event.SetEvent(self.hWaitStop)
def SvcDoRun(self):
'''
Called when the service is asked to start
'''
self.start()
servicemanager.LogMsg(servicemanager.EVENTLOG_INFORMATION_TYPE,
servicemanager.PYS_SERVICE_STARTED,
(self._svc_name_, ''))
self.main()
def start(self):
'''
Override to add logic before the start
eg. running condition
'''
pass
def stop(self):
'''
Override to add logic before the stop
eg. invalidating running condition
'''
pass
def main(self):
'''
Main class to be ovverridden to add logic
'''
pass
# entry point of the module: copy and paste into the new module
# ensuring you are calling the "parse_command_line" of the new created class
if __name__ == '__main__':
SMWinservice.parse_command_line() |
fichier E:\tmp\MonService.py (cf pièce jointe)
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import time,os,sys,logging,subprocess,io
from SMWinservice import SMWinservice
FORMATMSG='[%(asctime)-20s] %(levelname)-8.8s %(message)s';
FORMATTIMESTAMP='%Y-%m-%d %H:%M:%S';
logging.basicConfig(
filename = 'E:\\tmp\\MonService.log',
level = logging.INFO,
format = FORMATMSG,
datefmt = FORMATTIMESTAMP
)
class MonService(SMWinservice):
_svc_name_ = "MonService"
_svc_display_name_ = "Mon Service"
_svc_description_ = "Lance un sous programme python"
def start(self):
self.isrunning = True;
logging.info("Service start")
def stop(self):
self.isrunning = False;
logging.info("Service stop")
def main(self):
while self.isrunning:
cmd = "E:/tmp/MonSubProcess.py 2>&1"
p = subprocess.Popen(cmd,shell=True,stdout = subprocess.PIPE);
with io.TextIOWrapper(p.stdout, encoding="utf-8") as output:
for line in output:
logging.info(line);
p.wait();
RC = p.returncode;
logging.info("MonSubProcess RC = {0}".format(RC));
time.sleep(10)
if __name__ == '__main__':
MonService.parse_command_line() |
fichier E:\tmp\MonSubProcess.py (cf pièce jointe)
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import sys,io
def main():
print("Subprocess started !!")
if __name__ == '__main__':
main(); |
Pour information, j'ai setté la variable PYLAUNCH_DEBUG=1 dans le system pour avoir les LOG du lancement de python.
METHODE 1:
Dans une console ADMINISTRATOR je fais:
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E:\>python E:\tmp\MonService.py install
Installing service MonService
Service installed
E:\>python E:\tmp\MonService.py debug
Debugging service MonService - press Ctrl+C to stop.
Info 0x40001002 - The MonService service has started. |
et dans E:\tmp\MonService.log j'ai la log suivante en boucle
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[2019-06-08 12:40:14 ] INFO Service start
[2019-06-08 12:40:14 ] INFO launcher build: 32bit
[2019-06-08 12:40:14 ] INFO launcher executable: Console
[2019-06-08 12:40:14 ] INFO File 'C:\Users\XXX\AppData\Local\py.ini' non-existent
[2019-06-08 12:40:14 ] INFO File 'C:\windows\py.ini' non-existent
[2019-06-08 12:40:14 ] INFO Called with command line: "E:\tmp\MonSubProcess.py"
[2019-06-08 12:40:14 ] INFO maybe_handle_shebang: read 101 bytes
[2019-06-08 12:40:14 ] INFO maybe_handle_shebang: BOM not found, using UTF-8
[2019-06-08 12:40:14 ] INFO locating Pythons in 64bit registry
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\python.exe is a 64bit executable
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\PCbuild\win32\python.exe: The system cannot find the path specified.
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\PCbuild\amd64\python.exe: The system cannot find the path specified.
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\PCbuild\python.exe: The system cannot find the path specified.
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: unable to open PythonCore key in HKLM
[2019-06-08 12:40:14 ] INFO locating Pythons in native registry
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\python.exe: already found
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\PCbuild\win32\python.exe: The system cannot find the path specified.
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\PCbuild\amd64\python.exe: The system cannot find the path specified.
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: C:\Users\XXX\AppData\Local\Programs\Python\Python37\PCbuild\python.exe: The system cannot find the path specified.
[2019-06-08 12:40:14 ] INFO locate_pythons_for_key: unable to open PythonCore key in HKLM
[2019-06-08 12:40:14 ] INFO found no configured value for 'python'
[2019-06-08 12:40:14 ] INFO search for default Python found version 3.7 at 'C:\Users\XXX\AppData\Local\Programs\Python\Python37\python.exe'
[2019-06-08 12:40:14 ] INFO run_child: about to run 'C:\Users\XXX\AppData\Local\Programs\Python\Python37\python.exe "E:\tmp\MonSubProcess.py" '
[2019-06-08 12:40:14 ] INFO Subprocess started !!
[2019-06-08 12:40:14 ] INFO child process exit code: 0
[2019-06-08 12:40:14 ] INFO MonSubProcess RC = 0 |
METHODE 2:
Dans la même console ADMINISTRATOR si je restart le service
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E:\>python E:\tmp\MonService.py debug
Debugging service MonService - press Ctrl+C to stop.
Info 0x40001002 - The MonService service has started.
Stopping debug service.
E:\>python E:\tmp\MonService.py start
Starting service MonService |
Cette fois le subprocess python ne se lance pas car python n'est pas trouvé et j'ai le message suivant:
Can't find a default Python.
avec dans E:\tmp\MonService.log la log en boucle suivante
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[2019-06-08 12:49:06 ] INFO Service start
[2019-06-08 12:49:06 ] INFO launcher build: 32bit
[2019-06-08 12:49:06 ] INFO launcher executable: Console
[2019-06-08 12:49:06 ] INFO File 'C:\windows\system32\config\systemprofile\AppData\Local\py.ini' non-existent
[2019-06-08 12:49:06 ] INFO File 'C:\windows\py.ini' non-existent
[2019-06-08 12:49:06 ] INFO Called with command line: "E:\tmp\MonSubProcess.py"
[2019-06-08 12:49:06 ] INFO maybe_handle_shebang: read 101 bytes
[2019-06-08 12:49:06 ] INFO maybe_handle_shebang: BOM not found, using UTF-8
[2019-06-08 12:49:06 ] INFO locating Pythons in 64bit registry
[2019-06-08 12:49:06 ] INFO locate_pythons_for_key: unable to open PythonCore key in HKCU
[2019-06-08 12:49:06 ] INFO locate_pythons_for_key: unable to open PythonCore key in HKLM
[2019-06-08 12:49:06 ] INFO locating Pythons in native registry
[2019-06-08 12:49:06 ] INFO locate_pythons_for_key: unable to open PythonCore key in HKCU
[2019-06-08 12:49:06 ] INFO locate_pythons_for_key: unable to open PythonCore key in HKLM
[2019-06-08 12:49:06 ] INFO found no configured value for 'python'
[2019-06-08 12:49:06 ] INFO search for default Python found no interpreter
[2019-06-08 12:49:06 ] INFO Can't find a default Python.
[2019-06-08 12:49:06 ] INFO MonSubProcess RC = 103 |
METHODE 3:
Si dans E:\tmp\MonService.py je met en dur le PATH de python
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def main(self):
while self.isrunning:
cmd = "C:/Users/XXX/AppData/Local/Programs/Python/Python37/python.exe E:/tmp/MonSubProcess.py 2>&1"
p = subprocess.Popen(cmd,shell=True,stdout = subprocess.PIPE); |
Dans la même console ADMINISTRATOR si je restart le service
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E:\>python E:\tmp\MonService.py stop
Stopping service MonService
E:\>python E:\tmp\MonService.py start
Starting service MonService |
Sans surprise cela fonctionne car je by-pass toute la partie recherhe de python (vu que je n'ai pas les traces liées à PYLAUNCH_DEBUG=1)
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[2019-06-08 13:02:40 ] INFO Service start
[2019-06-08 13:02:40 ] INFO Subprocess started !!
[2019-06-08 13:02:40 ] INFO MonSubProcess RC = 0 |
Mon soucis est que sur ces 3 méthodes, seules la METHODE 2 qui ne marche pas m'intéresse :(
Est-ce qu'il y a un problème avec mon insatll de Python, où des variables qui me manqueraient?
D'avance merci pour votre aide.
Amicalement.
PS:je joins le zip avec les fichiers .py
