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此logger改进的目的有两个：
# -*- coding: utf-8 -*-""" auth: jaypeiemail: jaypei97159@gmail.com 例程：from somelib import logger # 默认log存放目录,需要在程序入口调用才能生效,可省略logger.log_dir = "./app"# log文件名前缀,需要在程序入口调用才能生效,可省略logger.log_name = "test_log" conf = logger.Logger()conf.debug('debug')conf.warn('tr-warn')conf.info('ds-info')conf.error('ss-error') """ import os, time, threadingimport datetimeimport loggingimport logging.handlerstry: import codecsexcept ImportError: codecs = None log_dir = "log"log_name = "applog" _logger_init_lock = threading.Lock() class MyHandler(logging.handlers.TimedRotatingFileHandler): """ 自己定义的TimedRotatingFileHandler """ def __init__(self, log_dir, file_name_prefix): self.log_dir = log_dir self.file_name_prefix = file_name_prefix self._mkdirs() self.baseFilename = "%s.%s.log" % (os.path.join(self.log_dir, file_name_prefix), time.strftime("%Y%m%d")) logging.handlers.TimedRotatingFileHandler.__init__(self, self.baseFilename, when='midnight', interval=1, backupCount=0, encoding=None) def doRollover(self): self.stream.close() # get the time that this sequence started at and make it a TimeTuple t = self.rolloverAt - self.interval timeTuple = time.localtime(t) self.baseFilename = "%s.%s.log" % (os.path.join(self.log_dir, self.file_name_prefix), time.strftime("%Y%m%d")) if self.encoding: self.stream = codecs.open(self.baseFilename, 'a', self.encoding) else: self.stream = open(self.baseFilename, 'a') self.rolloverAt = self.rolloverAt + self.interval def _mkdirs(self): if not os.path.exists(self.log_dir): try: os.makedirs(self.log_dir) except Exception,e: print str(e) class Logger(object): __instance = None def __new__(classtype, *args, **kwargs): _logger_init_lock.acquire() if classtype != type(classtype.__instance): classtype.__instance = object.__new__(classtype, *args, **kwargs) classtype.__instance.init() _logger_init_lock.release() return classtype.__instance def init(self): # 创建日志目录 global log_dir, log_name self.log_dir = log_dir self.log_name = log_name self.is_debug = True self.is_info = True self.is_warn = True self.is_error = True self.logger_formatter = "[%(asctime)-15s,%(levelname)s] %(message)s" self.file_formatter = "[%(asctime)-15s,%(levelname)s] %(message)s" self._initLogger() def _initLogger(self): # 初始化logger logging.basicConfig(format=self.logger_formatter) self.logger = logging.getLogger("_sys") self.logger.setLevel(logging.DEBUG) # info、warn、error都放到info文件 # error单独放到error文件 for t in (("info", logging.INFO), ("error", logging.ERROR)): filehandler = MyHandler(self.log_dir, "%s.%s" % (self.log_name, t[0])) filehandler.suffix = "%Y%m%d.log" filehandler.setLevel(t[1]) filehandler.setFormatter(logging.Formatter(self.file_formatter)) self.logger.addHandler(filehandler) # debug 单独放到debug文件 filehandler = MyHandler(self.log_dir, "%s.debug" % self.log_name) filehandler.suffix = "%Y%m%d.log" filehandler.setLevel(logging.DEBUG) filehandler.setFormatter(logging.Formatter(self.file_formatter)) self.logger.addHandler(filehandler) def getLogger(self): return self.logger def debug(self, msg): if self.is_debug: self.logger.debug(msg) def info(self, msg): if self.is_info: self.logger.info(msg) def warn(self, msg): if self.is_warn: self.logger.warn(msg) def error(self, msg): if self.is_error: self.logger.error(msg) def info(msg): Logger().info(msg) def warn(msg): Logger().warn(msg) def debug(msg): Logger().debug(msg) def error(msg): Logger().error(msg) 本地代码：
import os, time, threadingimport datetimeimport loggingimport logging.handlerstry: import codecsexcept ImportError: codecs = None log_dir = "log"log_name = "applog" _logger_init_lock = threading.Lock() class MyHandler(logging.handlers.TimedRotatingFileHandler): """ 自己定义的TimedRotatingFileHandler """ def __init__(self, log_dir, file_name_prefix): self.log_dir = log_dir self.file_name_prefix = file_name_prefix self._mkdirs() self.baseFilename = "%s_%s.log" % (os.path.join(self.log_dir, file_name_prefix), time.strftime("%Y%m%d_%H%M%S")) logging.handlers.TimedRotatingFileHandler.__init__(self, self.baseFilename, when='M', interval=1, backupCount=0, encoding=None) def _mkdirs(self): if not os.path.exists(self.log_dir): try: os.makedirs(self.log_dir) except Exception,e: print str(e)
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