Question

解决：

问题已解决。不是多个电话的问题。与错误初始化导致的重复日志记录处理程序有关。

更新模块module_2run.py检查日志记录FileHandler只有一个：

import logging, os
from logging import FileHandler


# LOGGING

def log_init():
    # Check FileHandler is NOT already in logging handlers
    for h_ in logging.getLogger().handlers:
        if isinstance(h_, FileHandler):
            return logging.getLogger(__name__)

    # Set initial logging level
    logging.basicConfig(format="%(levelname)s: %(message)s", level=logging.DEBUG)

    # Add FileHandler
    l2f_ = logging.FileHandler(os.path.splitext(os.path.basename(__file__))[0] + ".log")
    l2f_.setLevel(logging.INFO)
    l2f_.setFormatter(logging.Formatter("%(levelname)s: %(asctime)s %(message)s"))
    logging.getLogger().addHandler(l2f_)

    return logging.getLogger(__name__)

_log = log_init()


# MAIN

def main():
    _log.info("Do main job")


if __name__ == '__main__':
    main()

感谢所有看过的人！

初步问题：

我一直遇到问题。也许有人已经遇到过类似的人，可以帮助我。我在python上编写了一个非常简单的Windows服务。它工作，一切都很好看。每次迭代只有一个奇怪的效果，主要作业的模块调用次数增加1。在第一次迭代模块被调用一次，第二次 - 两次，第三次 - 三次，依此类推...... 我在Windows模块内部进行了一些日志记录 - 在主模块调用之前和之后进行日志记录。我还将记录放在主模块中 - 主模块调用了多少次。下面的屏幕截图。

windows_service.py

import win32event, win32service, win32serviceutil
import os, sys, time, subprocess, importlib
import servicemanager, traceback
from win32api import CloseHandle, GetLastError, SetConsoleCtrlHandler


'''
http://www.chrisumbel.com/article/windows_services_in_python
'''
class WindowsService(win32serviceutil.ServiceFramework):
    # you can NET START/STOP the service by the following name
    _svc_name_ = "WindowsService"
    # this text shows up as the service name in the Service
    # Control Manager (SCM)
    _svc_display_name_ = "Windows Service"
    # this text shows up as the description in the SCM
    _svc_description_ = "Windows service example"

    def __init__(self, args):
        win32serviceutil.ServiceFramework.__init__(self,args)
        SetConsoleCtrlHandler(lambda x: True, True)
        # create an event to listen for stop requests on
        self.hWaitStop = win32event.CreateEvent(None, 0, 0, None)
        self.module_2run = None

    # core logic of the service
    def SvcDoRun(self):
        # Go to module install directory
        os.chdir(os.path.dirname(__file__))
        servicemanager.LogMsg (
            servicemanager.EVENTLOG_INFORMATION_TYPE,
            servicemanager.PYS_SERVICE_STARTED,
            (self._svc_name_,'')
        )
        try: # try main
            rc_ = None
            # if the stop event hasn't been fired keep looping
            while rc_ != win32event.WAIT_OBJECT_0:
                # Log message before module run
                servicemanager.LogMsg(
                    servicemanager.EVENTLOG_INFORMATION_TYPE,
                    0xF000, ("Call module_2run", '')
                )

                # Import of reload module to run
                if not self.module_2run: self.module_2run = importlib.import_module('module_2run')
                else: importlib.reload(self.module_2run)

                # Call module main function
                self.module_2run.main()

                # Log message after module run
                servicemanager.LogMsg(
                    servicemanager.EVENTLOG_INFORMATION_TYPE,
                    0xF000, ("Exit module_2run", '')
                )

                # block for 20 seconds and listen for a stop event every 5 seconds
                wt_ = 20000
                ct_ = 5000
                ic_ = wt_ / ct_
                while ic_ >= 0:
                    ic_ -= 1
                    rc_ = win32event.WaitForSingleObject(self.hWaitStop, ct_)
                    if rc_ == win32event.WAIT_OBJECT_0: break

        except:
            servicemanager.LogErrorMsg(traceback.format_exc()) # if error print it to event log
            os._exit(-1) # return some value other than 0 to OS so that service knows to restart

    # called when we're being shut down
    def SvcStop(self):
        # tell the SCM we're shutting down
        self.ReportServiceStatus(win32service.SERVICE_STOP_PENDING)
        # fire the stop event
        win32event.SetEvent(self.hWaitStop)


if __name__ == '__main__':
    win32serviceutil.HandleCommandLine(WindowsService)

module_2run.py

import logging, os, sys, importlib


# LOGGING

# Set initial logging level
logging.basicConfig(format="%(levelname)s: %(message)s", level=logging.DEBUG)

# Add logging to file
l2f_ = logging.FileHandler(os.path.splitext(os.path.basename(__file__))[0] + ".log")
l2f_.setLevel(logging.INFO)
l2f_.setFormatter(logging.Formatter("%(levelname)s: %(asctime)s %(message)s"))
logging.getLogger().addHandler(l2f_)

_log = logging.getLogger(__name__)


# MAIN

def main():
    _log.info("Do main job")

In event log I can see two messages for each call - before and after:

In log file each loop increases number of calls by one:

在python上编写的Windows服务 - 每个循环增加一个调用次数

0 个答案: