Django logging module configuration

django log module

• Log Module Workflow
  1. Generating a log (log Example)
  2. Render format (format)
  3. Matching filter (filter)
  4. Persistence (processor)

• Formatter formatter

  Key words	description
  asctime	Time (2018-01-0123: 05: 15,000)
  threadName	Thread name
  thread	Thread id
  pathname	Log file path
  funcName	Print log function name
  lineno	Print log lines
  levelname	Print log level
  message	Specific information log

  asctime pathname funName lineno levelname message

• Processor handler

  The log processing, such as: written documents, print screen

• Filter filter

  import logging
  class TestFilter(logging.Filter):
    def filter(self,record):
        if '----' in record.msg:
            return False   # 会被过滤
        else:
            return True   # 会被打印

• Log instance logger

  LOGGING = {
      'version':1,
    'formatters':{
        'standard':{
            'format':'%(asctime)s [%(threadName)s: %(thread)d]'
                    '%(pathname)s':%(funcName)s:%(lineno)d]%(levelname)s-%(message)s'
        }
    },
    'filters':{
          'test':{
              '()':'过滤器TestFilter路径',
          }
    }，
    'handlers':{
        # 终端处理器
        'console_handler':{
            'level':'INFO',
            'class':'logging.StreamHandler',
            'formatter':'standard'
        }，
        # 文件处理器
        'file_handler':{
            'level':'DEBUG',
            'class':'logging.handlers.RotatingFileHandler',
              'filename':os.path.join(LOG_DIR,'backend.log')
            'maxBytes':'1024*1024*1024' # class参数如果日志大小超了会新建文件
            'formatter':'standard',
              'encoding':'utf-8'
        }
    }，
      'loggers':{
          'django':{
              'handlers':['console_handler','file_handler'],
              'filters':['test'],
              'level':'DEBUG'
          }
      }
  }

  • Entry point

    1. Django build environment

    2. def logdemo():
        logger = logging.getLogger('django')
        logger.info('hello')