TimedRotatingFileHandler日志的文件名约定?(python)
Python 2.7: 每次日志发生翻滚事件(使用RotatingFileHandler的日志)时,都会生成一个“备份”日志 例如:TimedRotatingFileHandler日志的文件名约定?(python),python,Python,Python 2.7: 每次日志发生翻滚事件(使用RotatingFileHandler的日志)时,都会生成一个“备份”日志 例如: logFile = 'general.log' file_handler = logging.handlers.TimedRotatingFileHandler(logFile,when="midnight") 在午夜翻滚和翻滚事件中,将创建以下文件: general.log.2015-01-21 该模块是否提供了这些文件名的结构灵活性? 使用不同的约定201
logFile = 'general.log'
file_handler = logging.handlers.TimedRotatingFileHandler(logFile,when="midnight")
在午夜翻滚和翻滚事件中,将创建以下文件:
general.log.2015-01-21
该模块是否提供了这些文件名的结构灵活性?
使用不同的约定<代码>20150121\u概述。日志简短的回答是否定的:根据文档,您没有办法这样做 后缀根据
时的参数进行更改,就像您在代码中看到的那样
从同一源代码中,您可以看到覆盖后缀
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}$")
不幸的是,替换点分隔符和交换suffix
和basename
并不是那么简单,您必须重写doRollover()
和getFilesToDelete()
方法
黑客可以是这样的(未经测试)。。。我希望它能起作用,但我不能给出任何保证:)
类MyTimedRotatingFileHandler(TimedRotatingFileHandler):
self.extMatch=r“^\d{4}-\d{2}-\d{2}$”
def getFilesToDelete(自):
“剪切、粘贴和…破解
"""
dirName,baseName=os.path.split(self.baseFilename)
filename=os.listdir(dirName)
结果=[]
extMatch=re.compile(r“^\d{4}\d{2}\d{2}$”)
ends=“389;”+baseName+”.log”
elen=len(结束)
对于文件名中的文件名:
如果文件名[-elen::]=结束:
日期=文件名[-elen:]
如果self.extMatch.match(日期):
result.append(os.path.join(dirName,fileName))
result.sort()
如果len(结果)0:
对于self.getFilesToDelete()中的s:
删除操作系统
如果不是自动延迟:
self.stream=self.\u open()
newRolloverAt=自计算机滚动(currentTime)
而newRolloverAt是否有前缀字段?否:(文件名是在中内置的doRollover()
方法,并且代码不是为自定义而设计的。
class MyTimedRotatingFileHandler(TimedRotatingFileHandler):
self.extMatch = r"^\d{4}-\d{2}-\d{2}$"
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) < self.backupCount:
result = []
else:
result = result[:len(result) - self.backupCount]
return result
def doRollover(self):
"""
CUT AND PAST FROM TimedRotatingFileHandler
customize file name by prefix instead suffix
"""
if self.stream:
self.stream.close()
self.stream = None
# get the time that this sequence started at and make it a TimeTuple
currentTime = int(time.time())
dstNow = time.localtime(currentTime)[-1]
t = self.rolloverAt - self.interval
if self.utc:
timeTuple = time.gmtime(t)
else:
timeTuple = time.localtime(t)
dstThen = timeTuple[-1]
if dstNow != dstThen:
if dstNow:
addend = 3600
else:
addend = -3600
timeTuple = time.localtime(t + addend)
#################################################
# THE HACK!!!! ##################################
##################################################
dfn = time.strftime("%Y%m%d", timeTuple) + "_" +self.baseFilename + ".log"
if os.path.exists(dfn):
os.remove(dfn)
# Issue 18940: A file may not have been created if delay is True.
if os.path.exists(self.baseFilename):
os.rename(self.baseFilename, dfn)
if self.backupCount > 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