TimedRotatingFileHandler日志的文件名约定？(蟒蛇)

Python 2.7:每次日志遇到翻转事件(使用RotatingFileHandler记录日志)时,都会生成"备份"日志.

例如 :

logFile = 'general.log'
file_handler = logging.handlers.TimedRotatingFileHandler(logFile,when="midnight")

午夜翻转和翻转事件的结果创建了以下文件:

general.log.2015-01-21

此模块是否为这些文件名的结构提供了任何灵活性？即使用不同的约定......20150121_general.log

简短的回答是否定的:根据TimedRotatingFileHandler文档,您无法做到这一点.

基于when参数的后缀更改,如代码https://hg.python.org/cpython/file/2.7/Lib/logging/handlers.py#l187中所示

从相同的源代码中您可以看到覆盖suffix很简单,但您也必须覆盖extMatch:

class MyTimedRotatingFileHandler(TimedRotatingFileHandler):
    def __init__(self, *args, **kwargs):
        super(MyTimedRotatingFileHandler,self).__init__(*args,**kwargs)
        self.suffix = "%Y%m%d"
        self.extMatch = re.compile(r"^\d{4}\d{2}\d{2}$")

不幸的是更换点分离器和交换suffix,并basename没有那么简单,你必须重写doRollover()和getFilesToDelete()方法.

黑客可以是这样的(未经测试)...我希望它有效,但我不能给任何逮捕:)

class MyTimedRotatingFileHandler(TimedRotatingFileHandler):

        self.extMatch = r"^\d{4}-\d{2}-\d{2}$"

   def getFilesToDelete(self):
        """ CUT, PASTE AND .... HACK
        """
        dirName, baseName = os.path.split(self.baseFilename)
        fileNames = os.listdir(dirName)
        result = []
        extMatch = re.compile(r"^\d{4}\d{2}\d{2}$")
        ends = "_" + baseName + ".log"
        elen = len(ends)
        for fileName in fileNames:
            if fileName[-elen:] == ends:
                date = fileName[-elen:]
                if self.extMatch.match(date):
                    result.append(os.path.join(dirName, fileName))
        result.sort()
        if len(result)  0:
            for s in self.getFilesToDelete():
                os.remove(s)
        if not self.delay:
            self.stream = self._open()
        newRolloverAt = self.computeRollover(currentTime)
        while newRolloverAt <= currentTime:
            newRolloverAt = newRolloverAt + self.interval
        #If DST changes and midnight or weekly rollover, adjust for this.
        if (self.when == 'MIDNIGHT' or self.when.startswith('W')) and not self.utc:
            dstAtRollover = time.localtime(newRolloverAt)[-1]
            if dstNow != dstAtRollover:
                if not dstNow:  # DST kicks in before next rollover, so we need to deduct an hour
                    addend = -3600
                else:           # DST bows out before next rollover, so we need to add an hour
                    addend = 3600
                newRolloverAt += addend
        self.rolloverAt = newRolloverAt