我正在尝试使用pywin32模块创建一个Windows服务,可以在将特定事件写入日志时终止并重新启动进程。
我可以创建,声明和运行服务,但是尽管它在事件上启动(即日志中的超时),但服务并没有正确地终止任务。
import win32service
import win32serviceutil
import win32api
import win32con
import win32event
import win32evtlogutil
from subprocess import Popen
import os, sys, string, time
import datetime
log_dir = "C:/Blablavla"
log_filename = "log"
error_strings = ("timeout", "FATAL", "error")
service_timeout = 600000
service_restart = 'batch.bat'
restart_required = False
# Make stderr and stdout will never been writen
sys.stdout = sys.stderr = open('nul', 'w')
class aservice(win32serviceutil.ServiceFramework):
_svc_name_ = "webcomRestart"
_svc_display_name_ = "restart webcom"
_svc_description_ = "restart when ssh error occurs (timeout, fatal errors,...)"
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 = service_timeout
while 1:
restart_required = False
# 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
servicemanager.LogInfoMsg("webComRestart - STOPPED")
break
else:
# servicemanager.LogInfoMsg("aservice - is alive and well")
os.chdir(log_dir)
with open(log_filename, 'r') as f:
for line in f.readlines():
if any(s in line for s in error_strings):
restart_required = True
if restart_required:
#execute webcom reload
#note: I can see that in the event observer
servicemanager.LogInfoMsg("WebCom Restart attempt")
#Next command has no effect, that's my problem
p = Popen('taskkill /IM BaiWebCom.exe', shell=False)
stdout, stderr = p.communicate()
# Write trace of service action
with open("trace.txt", "a") as tracefile:
tracefile.write(str(datetime.datetime.now())+'\n')
# erase log file
with open(log_filename, 'w'): pass
def ctrlHandler(ctrlType):
return True
if __name__ == '__main__':
win32api.SetConsoleCtrlHandler(ctrlHandler, True)
win32serviceutil.HandleCommandLine(aservice)
有人可以帮忙吗?