import socket
from media.monitor.log     import Loggable
from media.monitor.toucher import RepeatTimer

class EventDrainer(Loggable):
    """
    Flushes events from RabbitMQ that are sent from airtime every
    certain amount of time
    """
    def __init__(self, connection, interval=1):
        def cb():
            # TODO : make 0.3 parameter configurable
            try                   : connection.drain_events(timeout=0.3)
            except socket.timeout : pass
            except Exception as e :
                self.fatal_exception("Error flushing events", e)

        t        = RepeatTimer(interval, cb)
        t.daemon = True
        t.start()