slogging.py 文件源码

def configure(config_string=None, log_json=False, log_file=None):
    if not config_string:
        config_string = ":{}".format(DEFAULT_LOGLEVEL)

    if log_json:
        SLogger.manager.log_json = True
        log_format = JSON_FORMAT
    else:
        SLogger.manager.log_json = False
        log_format = PRINT_FORMAT

    if len(rootLogger.handlers) == 0:
        handler = StreamHandler()
        formatter = Formatter(log_format)
        handler.setFormatter(formatter)
        rootLogger.addHandler(handler)
    if log_file:
        if not any(isinstance(hndlr, FileHandler) for hndlr in rootLogger.handlers):
            handler = FileHandler(log_file)
            formatter = Formatter("{} {}".format(FILE_PREFIX, log_format))
            handler.setFormatter(formatter)
            rootLogger.addHandler(handler)

    # Reset logging levels before applying new config below
    for name, logger in SLogger.manager.loggerDict.items():
        if hasattr(logger, 'setLevel'):
            # Guard against `logging.PlaceHolder` instances
            logger.setLevel(logging.NOTSET)
            logger.propagate = True

    for name_levels in config_string.split(','):
        name, _, level = name_levels.partition(':')
        logger = getLogger(name)
        logger.setLevel(level.upper())