baseimage-tutorial-framework/lib/tfw/networking/solvable_connector.py

import zmq
from zmq.eventloop import ioloop

from tfw.config import tfwenv
from tfw.networking.zmq_connector_base import ZMQConnectorBase
from tfw.networking.serialization import serialize_all, deserialize_all

ioloop.install()


class SolvableConnector(ZMQConnectorBase):
    def __init__(self, zmq_context=None):
        super(SolvableConnector, self).__init__(zmq_context)
        self._zmq_req_socket = self._zmq_context.socket(zmq.REQ)
        self._zmq_req_socket.bind('tcp://*:{}'.format(tfwenv.CONTROLLER_PORT))

    def send(self, key, message):
        self._zmq_req_socket.send_multipart(serialize_all(key, message))

    def recv(self):
        return deserialize_all(*self._zmq_req_socket.recv_multipart())