control_server.py 文件源码

def process(self, blocking=False):
        """
        Each time this method is called, the socket tries to retrieve data and passes
        it to the JSONRPCResponseManager, which in turn passes the RPC to the
        ExposedObjectCollection.

        In case no data are available, the method does nothing. This behavior is required for
        Lewis where everything is running in one thread. The central loop can call process
        at some point to process remote calls, so the RPC-server does not introduce its own
        infinite processing loop.

        If the server has not been started yet (via :meth:`start_server`), a RuntimeError
        is raised.

        :param blocking: If True, this function will block until it has received data or a timeout
                         is triggered. Default is False to preserve behavior of prior versions.
        """
        if self._socket is None:
            raise RuntimeError('The server has not been started yet, use start_server to do so.')

        try:
            request = self._socket.recv_unicode(flags=zmq.NOBLOCK if not blocking else 0)

            self.log.debug('Got request %s', request)

            try:
                response = JSONRPCResponseManager.handle(request, self._exposed_object)
                self._socket.send_unicode(response.json)

                self.log.debug('Sent response %s', response.json)
            except TypeError as e:
                self._socket.send_json(
                    self._unhandled_exception_response(json.loads(request)['id'], e))
        except zmq.Again:
            pass