class RpcClient(object): def __init__(self, routing_key, host="localhost"): # routing_key - 'rpc_queue' self.routing_key = routing_key self.rabbit = Rabbit(host) # 队列名,随机 self.callback_queue_name = self.rabbit.declare_queue(exclusive=True) self.rabbit.register_consumer(queue_name=self.callback_queue_name, callback=self.on_response) def __enter__(self): return self def __exit__(self, exc_type, exc_val, exc_tb): self.rabbit.close() def on_response(self, ch, method, props, body): """ 收到消息就调用 :param ch: 管道内存对象地址 :param method: 消息发给哪个queue :param props: :param body: 数据对象 :return: """ # 判断本机生成的ID与生产端发过来的ID是否相等 if self.corr_id == props.correlation_id: # 将body值 赋值给self.response self.response = body def call(self, msg): """ 发送dict :param msg: :type msg: dict :return: dict """ # 随机的字符串 self.response = None self.corr_id = str(uuid.uuid4()) # routing_key='rpc_queue' 发一个消息到rpc_queue内 self.rabbit.channel.basic_publish(exchange='', routing_key=self.routing_key, properties=pika.BasicProperties( # 执行命令之后消费端将结果返回给self.callaback_queue这个队列中 reply_to=self.callback_queue_name, # 生成UUID 发送给消费端 correlation_id=self.corr_id, ), # 发的消息,必须传入字符串,不能传数字 body=json.dumps(msg)) # 监听数据 while self.response is None: # 没有消息不阻塞 self.rabbit.conn.process_data_events() return json.loads(str(self.response, encoding="utf-8"))
def receive_msg(self): rabbit = Rabbit() rabbit.declare_queue("algorithm", durable=True) rabbit.register_consumer(queue_name="algorithm", callback=self.callback, no_ack=False) rabbit.start_consuming()
def consume_from_rmq(self): rabbit = Rabbit() rabbit.declare_queue("algorithm", durable=True) rabbit.register_consumer(queue_name="algorithm", callback=self.algorithmCallback, no_ack=False) rabbit.start_consuming()