def __init__(self, broker, service, io_loop=None):
"""Create and setup an MDP worker.
@param broker A string containing the broker's URL
@param service A string containing the service name
@param io_loop An existing I/O loop object. If None, the default will be used.
"""
self.service=service
self._broker = broker
self.ctx = zmq.Context()
sock = self.ctx.socket(zmq.DEALER)
ZMQStream.__init__(self, sock, io_loop)
# last watchdog timer tick
self.watchdog = 0
# connection callback one-shot
self._conncb = DelayedCallback(self.send_ready, 3000, self.io_loop)
# heartbeat callback..runs continuous when connected
self._hbcb = PeriodicCallback(self.send_heartbeat, 2000, self.io_loop)
# number of connection attempts
self._conn_attempt = 0
# waiting to connect state
self._waiting_to_connect = True
# have we been disconnected? (flags a reconnect attempt)
self.disconnected = False
# connect the socket and send a READY when the io_loop starts
self.connect(self._broker)
self._conncb.start()
def __init__(self, broker, io_loop=None):
self.ctx = zmq.Context()
sock = self.ctx.socket(zmq.REQ)
ZMQStream.__init__(self, sock, io_loop)
self.on_recv(self.on_message)
self.connect(broker)
