

import pika

username = "shiwei"
pwd = 'shiwei666666'
user_pwd = pika.PlainCredentials(username, pwd)

# 创建连接
conn = pika.BlockingConnection(pika.ConnectionParameters("localhost", credentials=user_pwd))

channel = conn.channel()

channel.queue_declare(queue='rpc_queue')

def fib(n):
    if n == 0:
        return 0
    elif n == 1:
        return 1
    else:
        return fib(n - 1) + fib(n - 2)

def on_request(ch, method, props, body):
    n = int(body)
    print(" [.] fib(%s)" % n)
    response = fib(n)

    ch.basic_publish(exchange='',
                     routing_key=props.reply_to,
                     properties=pika.BasicProperties(correlation_id= props.correlation_id),
                     body=str(response))
    ch.basic_ack(delivery_tag=method.delivery_tag)

channel.basic_qos(prefetch_count=1)
channel.basic_consume(queue='rpc_queue', on_message_callback = on_request)
print(" [x] Awaiting RPC requests")
channel.start_consuming()