import zmq
from zmq.eventloop.zmqstream import ZMQStream

from tfw.config import tfwenv
from tfw.networking.zmq_connector_base import ZMQConnectorBase


class ControllerConnector(ZMQConnectorBase):
    def __init__(self, zmq_context=None):
        super(ControllerConnector, self).__init__(zmq_context)
        self._zmq_rep_socket = self._zmq_context.socket(zmq.REP)
        self._zmq_rep_socket.connect('tcp://localhost:{}'.format(tfwenv.CONTROLLER_PORT))
        self._zmq_rep_stream = ZMQStream(self._zmq_rep_socket)

        self.register_callback = self._zmq_rep_stream.on_recv_stream