python第十一天学习记录

来源：互联网发布：男女合租知乎编辑：程序博客网时间：2024/04/30 19:25

主要学习了rabbitmq和redis的使用

其中，使用rabbitmq实现rpc通信：
服务端的实现：

import pikaimport timeconnection = pika.BlockingConnection(pika.ConnectionParameters(host='192.168.207.136'))channel = connection.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(on_request, queue = 'rpc_queue')print(" [x] Awaiting RPC requests")channel.start_consuming()

客户端的实现：

import pikaimport uuidclass FibonacciRpcClient(object):    def __init__(self):        self.connection = pika.BlockingConnection(pika.ConnectionParameters(host='192.168.207.136'))        self.channel = self.connection.channel()        result = self.channel.queue_declare(exclusive=True)        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):        if self.corr_id == props.correlation_id:            self.response = body    def call(self, n):        self.response = None        self.corr_id = str(uuid.uuid4())        self.channel.basic_publish(exchange='',                                   routing_key='rpc_queue',                                   properties=pika.BasicProperties(                                       reply_to= self.callback_queue,                                       correlation_id=self.corr_id,                                   ),                                   body=str(n))        while self.response is None:            self.connection.process_data_events()        return int(self.response)fibonacci_rpc = FibonacciRpcClient()print(" [x] Requesting fib(30)")response = fibonacci_rpc.call(30)print(" [.] Got %r" % response)

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