def _setup_logging_from_conf():
    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)

    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)

    if CONF.publish_errors:
        handler = importutils.import_object(
            "dragon.openstack.common.log_handler.PublishErrorsHandler",
            logging.ERROR)
        log_root.addHandler(handler)

    datefmt = CONF.log_date_format
    for handler in log_root.handlers:
        # NOTE(alaski): CONF.log_format overrides everything currently.  This
        # should be deprecated in favor of context aware formatting.
        if CONF.log_format:
            handler.setFormatter(logging.Formatter(fmt=CONF.log_format,
                                                   datefmt=datefmt))
            log_root.info('Deprecated: log_format is now deprecated and will '
                          'be removed in the next release')
        else:
            handler.setFormatter(ContextFormatter(datefmt=datefmt))

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

    for pair in CONF.default_log_levels:
        mod, _sep, level_name = pair.partition('=')
        level = logging.getLevelName(level_name)
        logger = logging.getLogger(mod)
        logger.setLevel(level)
def _setup_logging_from_conf():
    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)

    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)

    if CONF.publish_errors:
        handler = importutils.import_object(
            "dragon.openstack.common.log_handler.PublishErrorsHandler",
            logging.ERROR)
        log_root.addHandler(handler)

    datefmt = CONF.log_date_format
    for handler in log_root.handlers:
        # NOTE(alaski): CONF.log_format overrides everything currently.  This
        # should be deprecated in favor of context aware formatting.
        if CONF.log_format:
            handler.setFormatter(
                logging.Formatter(fmt=CONF.log_format, datefmt=datefmt))
            log_root.info('Deprecated: log_format is now deprecated and will '
                          'be removed in the next release')
        else:
            handler.setFormatter(ContextFormatter(datefmt=datefmt))

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

    for pair in CONF.default_log_levels:
        mod, _sep, level_name = pair.partition('=')
        level = logging.getLevelName(level_name)
        logger = logging.getLogger(mod)
        logger.setLevel(level)
def load_action_driver(action_class, *args, **kwargs):
        """Load a compute driver module.
        :returns: a action instance
        """

        if not action_class:
            error = "action class not specified"

        LOG.debug(_("Loading action class '%s'") % action_class)
        try:
            action = importutils.import_object(action_class, *args, **kwargs)
            return action
        except ImportError:
            error = "Unable to load the action driver %s " % action_class

        LOG.exception(error)
        raise exception.ActionError(action=action_class)