gauge.py 文件源码

def __init__(self, *args, **kwargs):
        super(Gauge, self).__init__(*args, **kwargs)
        self.config_file = os.getenv(
            'GAUGE_CONFIG', '/etc/ryu/faucet/gauge.conf')
        self.exc_logfile = os.getenv(
            'GAUGE_EXCEPTION_LOG', '/var/log/ryu/faucet/gauge_exception.log')
        self.logfile = os.getenv('GAUGE_LOG', '/var/log/ryu/faucet/gauge.log')

        # Setup logging
        self.logger = logging.getLogger(__name__)
        logger_handler = TimedRotatingFileHandler(
            self.logfile,
            when='midnight')
        log_fmt = '%(asctime)s %(name)-6s %(levelname)-8s %(message)s'
        date_fmt = '%b %d %H:%M:%S'
        default_formatter = logging.Formatter(log_fmt, date_fmt)
        logger_handler.setFormatter(default_formatter)
        self.logger.addHandler(logger_handler)
        self.logger.propagate = 0

        # Set up separate logging for exceptions
        exc_logger = logging.getLogger(self.exc_logname)
        exc_logger_handler = logging.FileHandler(self.exc_logfile)
        exc_logger_handler.setFormatter(
            logging.Formatter(log_fmt, date_fmt))
        exc_logger.addHandler(exc_logger_handler)
        exc_logger.propagate = 1
        exc_logger.setLevel(logging.ERROR)

        self.dps = {}
        with open(self.config_file, 'r') as config_file:
            for dp_conf_file in config_file:
                # config_file should be a list of faucet config filenames
                # separated by linebreaks
                dp = DP.parser(dp_conf_file.strip(), self.logname)
                try:
                    dp.sanity_check()
                except AssertionError:
                    self.logger.exception(
                        "Error in config file {0}".format(dp_conf_file))
                else:
                    self.dps[dp.dp_id] = dp

        # Create dpset object for querying Ryu's DPSet application
        self.dpset = kwargs['dpset']

        # dict of polling threads:
        # polling threads are indexed by dp_id and then by name
        # eg: self.pollers[0x1]['port_stats']
        self.pollers = {}
        # dict of async event handlers
        self.handlers = {}