3Python全栈之路系列之RabbitMQ-Eden
# _*_coding:utf-8_*_import pika
import uuid
class FibonacciRpcClient(object):
def __init__(self):
self.connection = pika.BlockingConnection(pika.ConnectionParameters(
host='192.168.56.100'))
self.channel = self.connection.channel()
result = self.channel.queue_declare(exclusive=True)
# 服务端返回处理完毕的数据新Queue名称
self.callback_queue = result.method.queue
self.channel.basic_consume(self.on_response, no_ack=True,
queue=self.callback_queue)
def on_response(self, ch, method, props, body):
# corr_id等于刚刚发送过去的ID，就代表这条消息是我的
if self.corr_id == props.correlation_id:
self.response = body
def call(self, n):
self.response = None
# 生成一个唯一ID，相当于每个任务的ID
self.corr_id = str(uuid.uuid4())
self.channel.basic_publish(exchange='',
routing_key='rpc_queue',
properties=pika.BasicProperties(
# 让服务端处理完成之后把数据放到这个Queue里面
reply_to=self.callback_queue,
# 加上一个任务ID
correlation_id=self.corr_id,
),
body=str(n))
while self.response is None:
# 不断地去Queue接受消息，但不是阻塞的，而是一直循环的去取
self.connection.process_data_events()
return int(self.response)
fibonacci_rpc = FibonacciRpcClient()
print(" Requesting fib(30)")
response = fibonacci_rpc.call(30)
print(" [.] Got %r" % response)
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