def send_message_to_cell(self, cell_state, message):
        topic_base = CONF.cells.rpc_driver_queue_base
        topic = '%s.%s' % (topic_base, message.message_type)
        cctxt = self._get_client(cell_state, topic)
        if message.fanout:
            cctxt = cctxt.prepare(fanout=message.fanout)
        return cctxt.cast(message.ctxt, 'process_message',
                          message=message.to_json())
Send a message to another cell by JSON-ifying the message and
dataset/ETHPy150Open BU-NU-CLOUD-SP16/Trusted-Platform-Module-nova/nova/cells/rpc_driver.py/InterCellRPCAPI.send_message_to_cell