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使用python的pika链接rabbitMq断裂

news 来源：原创 2025/5/19 7:19:57

比如我们执行一个很长的任务的时候，执行结束ack确认发现确认失败，mq都断了。

只要是使用pyhon的pika都会出现这个问题，因为pika本身是没有主动发送心跳机制的（你用java的话是没问题的）

解决方式:

在链接中heartbeat=0

credentials = pika.PlainCredentials('xxx','xxx')
connection = pika.BlockingConnection(pika.ConnectionParameters(
host = "xxxx",port = 5672, credentials = credentials , heartbeat=0
))

解决方式2:

我亲自试过，确实有用

改写代码（引用:Python RabbitMQ/Pika 长连接断开报错Connection reset by peer和pop from an empty deque_pika.exceptions.streamlosterror: stream connection-CSDN博客）

"""
@author: Zhigang Jiang
@date: 2022/1/16
@description:
"""
import functools
import pika
import threading
import time


def ack_message(channel, delivery_tag):
    print(f'ack_message thread id: {threading.get_ident()}')
    if channel.is_open:
        channel.basic_ack(delivery_tag)
    else:
        # Channel is already closed, so we can't ACK this message;
        # log and/or do something that makes sense for your app in this case.
        pass


def do_work(channel, delivery_tag, body):
    print(f'do_work thread id: {threading.get_ident()}')
    print(body, "start")
    for i in range(10):
        print(i)
        time.sleep(20)
    print(body, "end")

    cb = functools.partial(ack_message, channel, delivery_tag)
    channel.connection.add_callback_threadsafe(cb)


def on_message(channel, method_frame, header_frame, body):
    print(f'on_message thread id: {threading.get_ident()}')
    delivery_tag = method_frame.delivery_tag
    t = threading.Thread(target=do_work, args=(channel, delivery_tag, body))
    t.start()


credentials = pika.PlainCredentials('username', 'password')
parameters = pika.ConnectionParameters('test.webapi.username.com', credentials=credentials, heartbeat=5)
connection = pika.BlockingConnection(parameters)
channel = connection.channel()
channel.queue_declare(queue="standard", durable=True)
channel.basic_qos(prefetch_count=1)
channel.basic_consume('standard', on_message)

print(f'main thread id: {threading.get_ident()}')
try:
    channel.start_consuming()
except KeyboardInterrupt:
    channel.stop_consuming()
connection.close()

长时间的话，家里的网抖动可能出现，我们家有时候就会断网个10几秒，有时候打游戏就会掉线：

pika.exceptions.AMQPHeartbeatTimeout: No activity or too many missed heartbeats in the last xx seconds
这种情况，把他拉起就行了，加一个

while True:
    try:
        # 用户名密码，没有设置的可以省略这一步
        credentials = pika.PlainCredentials('xx', 'xx')
        connection = pika.BlockingConnection(pika.ConnectionParameters(
            host="xxxx", port=5672, credentials=credentials, heartbeat=10
        ))
        channel = connection.channel()
        channel.queue_declare(queue="xxx", durable=True)  # 如果是持久化队列就是True

        channel.basic_qos(prefetch_count=1)
        channel.basic_consume("xxx", on_message)
        print(f'main thread id: {threading.get_ident()}')
        print("开始消费")
        channel.start_consuming()
    except KeyboardInterrupt:
        # channel.stop_consuming()
        print("出现异常，可能是网络原因，重新启动"+e)
        time.sleep(30)