Question

我想知道，使用相同的代理拥有不同的Celery实例对象是一种好习惯吗？

目前，我有一个rabbitmq，作为3个Celery实例共享的单个代理。我的芹菜实例如下

insider_transaction - 修正了计划工作人员。每分钟运行
earning - 由网络服务器创建的工作人员。
stock_price - 由网络服务器创建的工作人员。

我设计的每个工人都在自己的docker容器中运行。我希望3名工人彼此独立。

然而，我意识到情况并非如此！

例如，earning工作人员会错误地接收假设仅由stock_price或insider_transaction收到的邮件。

您将看到earning工作人员收到此类消息。

earning_1              | The message has been ignored and discarded.
earning_1              |
earning_1              | Did you remember to import the module containing this task?
earning_1              | Or maybe you're using relative imports?
earning_1              |
earning_1              | Please see
earning_1              | http://docs.celeryq.org/en/latest/internals/protocol.html
earning_1              | for more information.
earning_1              |
earning_1              | The full contents of the message body was:
earning_1              | '[[], {}, {"callbacks": null, "errbacks": null, "chain": null, "chord": null}]' (77b)
earning_1              | Traceback (most recent call last):
earning_1              |   File "/usr/local/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 561, in on_task_received
earning_1              |     strategy = strategies[type_]
earning_1              | KeyError: 'insider_transaction.run'

和这个

earning_1              | The message has been ignored and discarded.
earning_1              |
earning_1              | Did you remember to import the module containing this task?
earning_1              | Or maybe you're using relative imports?
earning_1              |
earning_1              | Please see
earning_1              | http://docs.celeryq.org/en/latest/internals/protocol.html
earning_1              | for more information.
earning_1              |
earning_1              | The full contents of the message body was:
earning_1              | '[[2, 3], {}, {"callbacks": null, "errbacks": null, "chain": null, "chord": null}]' (81b)
earning_1              | Traceback (most recent call last):
earning_1              |   File "/usr/local/lib/python3.6/site-packages/celery/worker/consumer/consumer.py", line 561, in on_task_received
earning_1              |     strategy = strategies[type_]
earning_1              | KeyError: 'stock_price.mul'

我不希望发生这种情况。在我的Web服务器端代码（Flask）中。我写了

celery0 = Celery('earning',
                broker=CELERY_BROKER_URL,
                backend=CELERY_RESULT_BACKEND)

celery1 = Celery('stock_price',
                broker=CELERY_BROKER_URL,
                backend=CELERY_RESULT_BACKEND)

@app.route('/do_work/<int:param1>/<int:param2>')
def do_work(param1,param2):
    task0 = celery0.send_task('earning.add', args=[param1, param2], kwargs={})

    task1 = celery1.send_task('stock_price.mul', args=[param1, param2], kwargs={})

因此，我希望earning工作人员只会收到earning条消息，而不会收到stock_price或insider_transaction条消息。

我可以知道，为什么会出现这个问题？不同的Celery实例是否不可能共享单个经纪人？

可以从https://github.com/yccheok/celery-hello-world

结帐一个演示此问题的项目

docker-compose build
docker-compose up -d
http://localhost:5000/do_work/2/3
docker-compose up earning

Answer 1

您使用的是路由键吗？您可以使用routing keys告诉交换哪些任务要处理哪些队列。在芹菜配置中设置这些可能有助于防止错误的消息被错误的工作者消耗。

使用相同代理的不同Celery实例对象 - 这是一个好习惯吗？

1 个答案: