Python logging模块封装实现原理与四大组件解析

import os, time, logging, sys
from Common.plugs.get_config import r_config

BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(__file__)))
if sys.platform == "win32":
  ENV_CONF_DIR = os.path.join(BASE_DIR, 'Common/conf/env_config.ini').replace('/', '\\')
else:
  ENV_CONF_DIR = os.path.join(BASE_DIR, 'Common/conf/env_config.ini')
log_path = r_config(ENV_CONF_DIR, "log", "log_path")


class Log:

  def __init__(self, log_path):
    self.logName = os.path.join(log_path, '{0}.log'.format(time.strftime('%Y-%m-%d')))

  def console_log(self, level, message):
    # 创建一个logger
    logger = logging.getLogger()
    logger.setLevel(logging.DEBUG)

    # 创建一个handler，用于 debug 写入日志文件
    debug_file = logging.FileHandler(self.logName, 'a+', encoding='utf-8')
    debug_file.setLevel(logging.DEBUG)

    # 再创建一个handler，用于输出到控制台
    ch = logging.StreamHandler()
    ch.setLevel(logging.DEBUG)

    # 定义handler的输出格式

    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')

    debug_file.setFormatter(formatter)
    ch.setFormatter(formatter)

    # 给logger添加handler
    logger.addHandler(debug_file)
    logger.addHandler(ch)

    # 记录一条日志
    if level == 'info':
      logger.info(message)
    elif level == 'debug':
      logger.debug(message)
    elif level == 'warning':
      logger.warning(message)
    elif level == 'error':
      logger.error(message)

    elif level == 'critical':
      logger.critical(message)

    logger.removeHandler(ch)
    logger.removeHandler(debug_file)
    debug_file.close()

  def debug(self, message): #最详细日志信息, 多用于问题诊断
    self.console_log('debug', message)

  def info(self, message): #仅次于DEBUG, 多用于记录关键点信息, 确保程序按预期执行
    self.console_log('info', message)

  def warning(self, message): #低等级故障, 但程序仍能运行, 如磁盘空间不足警告
    self.console_log('warning', message)

  def error(self, message): #由于比WARNING严重的问题, 导致某些功能不能正常运行时的记录
    self.console_log('error', message)

  def critical(self, message): 严重错误, 导致应用程序不能继续运行时的记录
    self.console_log('critical', message)


if __name__ == '__main__':
  Log(log_path).info("adasd")
  Log(log_path).error("dsadasddasd")
'''