Buildbot主机的http.log错误

Question

最近，当我试图重新启动我的构建主程序时，由于http.log的一些问题，它失败了。我得到以下错误：

2014-07-17 11:21:55+0200 [-] RotateLogSite starting on 8000
2014-07-17 11:21:55+0200 [-] Starting factory <buildbot.status.web.baseweb.RotateLogSite instance at 0x0295F300>
2014-07-17 11:21:55+0200 [-] Setting up http.log rotating 10 files of 10000000 bytes each
2014-07-17 11:21:55+0200 [-] while starting BuildMaster
    Traceback (most recent call last):
      File "C:\Python27\lib\site-packages\twisted\application\service.py", line 308, in addService
        service.privilegedStartService()
      File "C:\Python27\lib\site-packages\twisted\application\service.py", line 277, in privilegedStartService
        service.privilegedStartService()
      File "C:\Python27\lib\site-packages\twisted\application\internet.py", line 358, in privilegedStartService
        self._waitingForPort = self.endpoint.listen(self.factory)
      File "C:\Python27\lib\site-packages\twisted\internet\endpoints.py", line 461, in listen
        interface=self._interface)
    --- <exception caught here> ---
      File "C:\Python27\lib\site-packages\twisted\internet\defer.py", line 108, in execute
        result = callable(*args, **kw)
      File "C:\Python27\lib\site-packages\twisted\internet\posixbase.py", line 482, in listenTCP
        p.startListening()
      File "C:\Python27\lib\site-packages\twisted\internet\tcp.py", line 998, in startListening
        self.factory.doStart()
      File "C:\Python27\lib\site-packages\twisted\internet\protocol.py", line 72, in doStart
        self.startFactory()
      File "C:\Python27\lib\site-packages\twisted\web\http.py", line 1844, in startFactory
        self.logFile = self._openLogFile(self.logPath)
      File "C:\Python27\lib\site-packages\buildbot-0.8.8-py2.7.egg\buildbot\status\web\baseweb.py", line 477, in _openLogFile
        return LogFile.fromFullPath(path, rotateLength=rotateLength, maxRotatedFiles=maxRotatedFiles)
      File "C:\Python27\lib\site-packages\twisted\python\logfile.py", line 48, in fromFullPath
        os.path.dirname(logPath), *args, **kwargs)
      File "C:\Python27\lib\site-packages\twisted\python\logfile.py", line 161, in __init__
        BaseLogFile.__init__(self, name, directory, defaultMode)
      File "C:\Python27\lib\site-packages\twisted\python\logfile.py", line 40, in __init__
        self._openFile()
      File "C:\Python27\lib\site-packages\twisted\python\logfile.py", line 166, in _openFile
        BaseLogFile._openFile(self)
      File "C:\Python27\lib\site-packages\twisted\python\logfile.py", line 64, in _openFile
        self._file = file(self.path, "r+", 1)
    exceptions.IOError: [Errno 22] invalid mode ('r+') or filename: 'E:\\master_dir\\http.log'

我发现我的http.log已经达到了4GB大小，尽管它应该在10 my后旋转。为什么buildbot不能在10 to后旋转http.log？为什么我要得到错误的Invalid mode (r+)？是否有一个构建配置参数来设置http.log的旋转大小？

删除该文件至少解决了启动buildmaster的问题，但我仍然不知道为什么我一开始就会出现这个错误。

我正在运行buildbot版本0.8.8，谢谢。

编辑

正如djmitche所问的，我尝试使用twisted日志记录模块。无论斜杠的顺序如何，它都是很好的记录。

######## TWISTED ##########
from twisted.python.logfile import LogFile

LOG_FILENAME_TWISTED = r'C:\wp\log_rotate_twisted.log'

lf = LogFile.fromFullPath(LOG_FILENAME_TWISTED, rotateLength=20)

# Log some messages
for i in range(20):
    lf.write('i = %d' % i)

Answer 1

这可能是Twisted Python的一个问题(我建议添加相应的标记)。

您能否验证日志旋转参数是否设置正确，也许可以通过在_openLogFile中修补_openLogFile来打印rotateLength？重新启动主程序时，打印的输出将出现在twistd.log中。