单例模式实现日志文件的分文件存储。

最新推荐文章于 2023-03-17 20:02:09 发布

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本文介绍了一种利用单例模式实现日志信息分文件存储的方法，通过Python编程实现了不同级别的日志分别写入对应的文件中，提高了日志管理和检索的效率。

利用单例模式实现日志文件分文件存储。

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# @Time    : 2020/5/11 23:21
# @Author  : Zheng guoliang
# @Version : 1.0
# @File    : log_util.py
# @Software: PyCharm
"""
1.需求功能：
 利用单例模式将日志分文件存储

2.实现过程：


"""

import os
import sys
import time
import logging
import inspect

BASE_PATH = os.path.join(os.path.dirname(__file__), 'log')
if not os.path.exists(BASE_PATH):
    os.mkdir(BASE_PATH)

handlers = {logging.NOTSET: "ZGL-notset.log",
            logging.DEBUG: "ZGL-debug.log",
            logging.INFO: "ZGL-info.log",
            logging.WARNING: "ZGL-warning.log",
            logging.ERROR: "ZGL-error.log",
            logging.CRITICAL: "ZGL-critical.log"}


def create_handlers():
    logLevels = handlers.keys()
    for level in logLevels:
        path = os.path.abspath(os.path.join(BASE_PATH, handlers[level]))
        handlers[level] = logging.FileHandler(path)


class LogUtil(object):
    __single = None
    __loggers = None

    def now_message(self):
        return time.strftime('%Y-%m-%d %H:%M:%S', time.localtime())

    def __new__(cls, *args, **kwargs):
        if cls.__single is None:
            cls.__single = super().__new__(cls)
        return cls.__single

    def __init__(self, level=logging.NOTSET):
        if self.__loggers is None:
            self.__loggers = {}
            create_handlers()
            logLevels = handlers.keys()
            for level in logLevels:
                logger = logging.getLogger(str(level))
                logger.addHandler(handlers[level])
                logger.setLevel(level)
                self.__loggers.update({level: logger})

    def get_log_message(self, level, message):
        frame, filename, lineNo, functionName, code, unknowField = inspect.stack()[2]
        '''日志格式：[时间] [类型] [记录代码] 信息'''
        return "[%s] [%s] [%s - %s - %s] %s" % (self.now_message(), level, filename, lineNo, functionName, message)

    def info(self, message):
        message = self.get_log_message("info", message)
        self.__loggers[logging.INFO].info(message)

    def error(self, message):
        message = self.get_log_message("error", message)
        self.__loggers[logging.ERROR].error(message)

    def warning(self, message):
        message = self.get_log_message("warning", message)
        self.__loggers[logging.WARNING].warning(message)

    def debug(self, message):
        message = self.get_log_message("debug", message)
        self.__loggers[logging.DEBUG].debug(message)

    def critical(self, message):
        message = self.get_log_message("critical", message)
        self.__loggers[logging.CRITICAL].critical(message)


if __name__ == "__main__":
    logger = LogUtil()
    logger.debug("debug")
    print(id(logger))
    logger = LogUtil()
    logger.info("info")
    print(id(logger))
    logger = LogUtil()
    logger.warning("warning")
    print(id(logger))
    logger = LogUtil()
    logger.error("error")
    print(id(logger))
    logger = LogUtil()
    logger.critical("critical")
    print(id(logger))