66 lines
2.1 KiB
Python
66 lines
2.1 KiB
Python
import logging
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import zmq
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from zmq.eventloop.zmqstream import ZMQStream
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from .scope import Scope
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from .serialization import serialize_tfw_msg, with_deserialize_tfw_msg
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LOG = logging.getLogger(__name__)
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class ServerDownlinkConnector:
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def __init__(self, connect_addr):
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self.keys = []
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self._on_recv_callback = None
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self._zmq_sub_socket = zmq.Context.instance().socket(zmq.SUB)
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self._zmq_sub_socket.setsockopt(zmq.RCVHWM, 0)
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self._zmq_sub_socket.connect(connect_addr)
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self._zmq_sub_stream = ZMQStream(self._zmq_sub_socket)
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def subscribe(self, *keys):
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for key in keys:
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self._zmq_sub_socket.setsockopt_string(zmq.SUBSCRIBE, key)
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self.keys.append(key)
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def unsubscribe(self, *keys):
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for key in keys:
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self._zmq_sub_socket.setsockopt_string(zmq.UNSUBSCRIBE, key)
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self.keys.remove(key)
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def register_callback(self, callback):
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self._on_recv_callback = callback
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self._zmq_sub_stream.on_recv(with_deserialize_tfw_msg(self._on_recv))
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def _on_recv(self, message):
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key = message['key']
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if key in self.keys or '' in self.keys:
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self._on_recv_callback(message)
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def close(self):
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self._zmq_sub_stream.close()
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class ServerUplinkConnector:
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def __init__(self, connect_addr):
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self._zmq_push_socket = zmq.Context.instance().socket(zmq.PUSH)
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self._zmq_push_socket.setsockopt(zmq.SNDHWM, 0)
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self._zmq_push_socket.connect(connect_addr)
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def send_message(self, message, scope=Scope.ZMQ):
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message['scope'] = scope.value
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self._zmq_push_socket.send_multipart(serialize_tfw_msg(message))
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def close(self):
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self._zmq_push_socket.close()
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class ServerConnector(ServerDownlinkConnector, ServerUplinkConnector):
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def __init__(self, downlink_connect_addr, uplink_connect_addr):
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ServerDownlinkConnector.__init__(self, downlink_connect_addr)
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ServerUplinkConnector.__init__(self, uplink_connect_addr)
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def close(self):
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ServerDownlinkConnector.close(self)
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ServerUplinkConnector.close(self)
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