标签:turn rmi odi The 过期 日志轮转 alt ack ecif
项目使用了 logging 的 TimedRotatingFileHandler :
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#!/user/bin/env python # -*- coding: utf-8 -*- import logging from logging.handlers import TimedRotatingFileHandler log = logging.getLogger() file_name = "./test.log" logformatter = logging.Formatter( ‘%(asctime)s [%(levelname)s]|%(message)s‘ ) loghandle = TimedRotatingFileHandler(file_name, ‘midnight‘ , 1 , 2 ) loghandle.setFormatter(logformatter) loghandle.suffix = ‘%Y%m%d‘ log.addHandler(loghandle) log.setLevel(logging.DEBUG) log.debug( "init successful" ) |
参考 python logging 的官方文档:
https://docs.python.org/2/library/logging.html
查看其 入门 实例,可以看到使用按时间轮转的相关内容:
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import logging # create logger logger = logging.getLogger( ‘simple_example‘ ) logger.setLevel(logging.DEBUG) # create console handler and set level to debug ch = logging.StreamHandler() ch.setLevel(logging.DEBUG) # create formatter formatter = logging.Formatter( ‘%(asctime)s - %(name)s - %(levelname)s - %(message)s‘ ) # add formatter to ch ch.setFormatter(formatter) # add ch to logger logger.addHandler(ch) # ‘application‘ code logger.debug( ‘debug message‘ ) |
粗看下,也看不出有什么不对的地方。
那就看下logging的代码,找到TimedRotatingFileHandler 相关的内容,其中删除过期日志的内容:
logging/handlers.py
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def getFilesToDelete( self ): """ Determine the files to delete when rolling over. More specific than the earlier method, which just used glob.glob(). """ dirName, baseName = os.path.split( self .baseFilename) fileNames = os.listdir(dirName) result = [] prefix = baseName + "." plen = len (prefix) for fileName in fileNames: if fileName[:plen] = = prefix: suffix = fileName[plen:] if self .extMatch.match(suffix): result.append(os.path.join(dirName, fileName)) result.sort() if len (result) < self .backupCount: result = [] else : result = result[: len (result) - self .backupCount] return result |
轮转删除的原理,是查找到日志目录下,匹配suffix后缀的文件,加入到删除列表,如果超过了指定的数目就加入到要删除的列表中,再看下匹配的原理:
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elif self .when = = ‘D‘ or self .when = = ‘MIDNIGHT‘ : self .interval = 60 * 60 * 24 # one day self .suffix = "%Y-%m-%d" self .extMatch = r "^\d{4}-\d{2}-\d{2}$" |
exMatch 是一个正则的匹配,格式是 - 分隔的时间,而我们自己设置了新的suffix没有 - 分隔:
loghandle.suffix = ‘%Y%m%d‘
这样就找不到要删除的文件,不会删除相关的日志。
python logging 日志轮转文件不删除问题的解决方法
标签:turn rmi odi The 过期 日志轮转 alt ack ecif
原文地址:https://www.cnblogs.com/qiumingcheng/p/13332079.html