我有一项服务,如下:
"""
The most basic (working) CherryPy 3.1 Windows service possible.
Requires Mark Hammond's pywin32 package.
"""
import cherrypy
import win32serviceutil
import win32service
import sys
import __builtin__
__builtin__.theService = None
class HelloWorld:
""" Sample request handler class. """
def __init__(self):
self.iVal = 0
@cherrypy.expose
def index(self):
try:
self.iVal += 1
if self.iVal == 5:
sys.exit()
return "Hello world! " + str(self.iVal)
except SystemExit:
StopServiceError(__builtin__.theService)
class MyService(win32serviceutil.ServiceFramework):
"""NT Service."""
_svc_name_ = "CherryPyService"
_svc_display_name_ = "CherryPy Service"
_svc_description_ = "Some description for this service"
def SvcDoRun(self):
__builtin__.theService = self
StartService()
def SvcStop(self):
StopService(__builtin__.theService)
def StartService():
cherrypy.tree.mount(HelloWorld(), '/')
cherrypy.config.update({
'global':{
'tools.log_tracebacks.on': True,
'log.error_file': '\\Error_File.txt',
'log.screen': True,
'engine.autoreload.on': False,
'engine.SIGHUP': None,
'engine.SIGTERM': None
}
})
cherrypy.engine.start()
cherrypy.engine.block()
def StopService(classObject):
classObject.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
cherrypy.engine.exit()
classObject.ReportServiceStatus(win32service.SERVICE_STOPPED)
def StopServiceError(classObject):
classObject.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
cherrypy.engine.exit()
classObject.ReportServiceStatus(serviceStatus=win32service.SERVICE_STOPPED, win32ExitCode=1, svcExitCode=1)
if __name__ == '__main__':
win32serviceutil.HandleCommandLine(MyService)
当sys.ext()导致服务退出时,我希望Windows重新启动服务。有谁知道如何做到这一点?
答案 0 :(得分:4)
非编程相关选项:
可以配置Windows服务进行恢复。选择recovery
窗口的service properties
标记。在第一次,第二次或后续失败后,您可以选择Restart the Service
。
一个简单的想法 - 为什么不放弃sys.exit()
电话?这样服务就会继续运行,您不必处理重新启动它。如果您确实需要知道self.iVal
何时到达5
,您可以向事件记录器报告(并可能重置计数器)。
答案 1 :(得分:2)
我遇到了完全相同的问题:尝试使用错误代码创建基于Python的服务退出,以便服务框架可以重新启动它。我尝试使用ReportServiceStatus(win32service.SERVICE_STOP_PENDING, win32ExitCode=1, svcExitCode=1)
以及sys.exit(1)
的方法,但没有一个提示Windows重新启动服务,尽管后者在事件日志中显示为错误。我最终没有依赖服务框架而只是这样做:
def SvcDoRun(self):
restart_required = run_service() # will return True if the service needs
# to be restarted
if restart_required:
subprocess.Popen('sleep 5 & sc start %s' % self._svc_name_, shell=True)