log.py 文件源码

def _setup_logging_from_conf(product_name):
    log_root = getLogger(None).logger
    for handler in log_root.handlers:
        log_root.removeHandler(handler)

    if CONF.use_syslog:
        facility = _find_facility_from_conf()
        syslog = logging.handlers.SysLogHandler(address='/dev/log',
                                                facility=facility)
        log_root.addHandler(syslog)

    logpath = _get_log_file_path()
    if logpath:
        filelog = logging.handlers.WatchedFileHandler(logpath)
        log_root.addHandler(filelog)

        mode = int('0644', 8)
        st = os.stat(logpath)
        if st.st_mode != (stat.S_IFREG | mode):
            os.chmod(logpath, mode)

    if CONF.use_stderr:
        streamlog = ColorHandler()
        log_root.addHandler(streamlog)
    elif not CONF.log_file:
        # pass sys.stdout as a positional argument
        # python2.6 calls the argument strm, in 2.7 it's stream
        streamlog = logging.StreamHandler(sys.stdout)
        log_root.addHandler(streamlog)

    for handler in log_root.handlers:
        datefmt = CONF.log_date_format
        if CONF.log_format:
            handler.setFormatter(logging.Formatter(fmt=CONF.log_format,
                                                   datefmt=datefmt))
        handler.setFormatter(LegacyFormatter(datefmt=datefmt))

    if CONF.verbose or CONF.debug:
        log_root.setLevel(logging.DEBUG)
    else:
        log_root.setLevel(logging.INFO)