如何解决芹菜任务没有发送给经纪人
当我尝试将任务发送给代理 (RabbitMQ) 时，它挂起。
import * as React from "react";
type ChangeEventHandlerLegacy = (field: string,event: React.ChangeEvent) => void
type Props<T> = {
field?: T
onChange: [T] extends [string] ? ChangeEventHandlerLegacy : React.ChangeEventHandler
}
function Input<T>(props: Props<T>) { return null }
const workingLegacy = <Input field="1" onChange={(prop,event) => {}} />
// `onChange` incorrectly resolves to `ChangeEventHandlerLegacy | React.ChangeEventHandler`:
const brokenNative = <Input onChange={(event) => { console.log(event) }} />
// Explicitly providing `field` fixes the type:
const workingNative = <Input field={undefined} onChange={(event) => { console.log(event) }} />
// Using createElement results in `onChange` always resolving to `React.ChangeEventHandler`,likely due to `field` being `unkNown`
const brokenLegacy2 = React.createElement(Input,{ field: '2',onChange: (a,b,c) => console.log(a,c) })
const workingNative2 = React.createElement(Input,{ onChange: (event) => console.log(event) })
如果我同步运行任务，它会按预期工作。
# python shell
promise = foo.s(first_arg="2").apply_async()
# blocking indefinitely. I expected a promise object.
如果我用 ctrl+c 中断 # python shell
promise = foo.s(first_arg="2").apply()
>>> hello argument 2
，我会得到一些线索的回溯：
.apply_async()代理连接字符串在系统中如下所示：
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/kombu/utils/functional.py",line 32,in __call__
return self.__value__
AttributeError: 'ChannelPromise' object has no attribute '__value__'
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/amqp/transport.py",line 173,in _connect
host,port,family,socket.soCK_STREAM,SOL_TCP)
File "/usr/local/lib/python3.7/socket.py",line 752,in getaddrinfo
for res in _socket.getaddrinfo(host,type,proto,flags):
socket.gaierror: [Errno -9] Address family for hostname not supported
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
File "/usr/local/lib/python3.7/site-packages/kombu/utils/functional.py",line 325,in retry_over_time
return fun(*args,**kwargs)
File "/usr/local/lib/python3.7/site-packages/kombu/connection.py",line 866,in _connection_factory
self._connection = self._establish_connection()
File "/usr/local/lib/python3.7/site-packages/kombu/connection.py",line 801,in _establish_connection
conn = self.transport.establish_connection()
File "/usr/local/lib/python3.7/site-packages/kombu/transport/pyamqp.py",line 128,in establish_connection
conn.connect()
File "/usr/local/lib/python3.7/site-packages/amqp/connection.py",line 323,in connect
self.transport.connect()
File "/usr/local/lib/python3.7/site-packages/amqp/transport.py",line 113,in connect
self._connect(self.host,self.port,self.connect_timeout)
File "/usr/local/lib/python3.7/site-packages/amqp/transport.py",line 184,in _connect
"Failed to resolve broker hostname"))
File "/usr/local/lib/python3.7/site-packages/amqp/transport.py",line 197,in _connect
self.sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused
During handling of the above exception,another exception occurred:
Traceback (most recent call last):
File "<stdin>",line 1,in <module>
File "/usr/local/lib/python3.7/site-packages/celery/canvas.py",line 225,in apply_async
return _apply(args,kwargs,**options)
File "/usr/local/lib/python3.7/site-packages/celery/app/task.py",line 565,in apply_async
**options
File "/usr/local/lib/python3.7/site-packages/celery/app/base.py",line 749,in send_task
amqp.send_task_message(P,name,message,**options)
File "/usr/local/lib/python3.7/site-packages/celery/app/amqp.py",line 532,in send_task_message
**properties
File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py",line 178,in publish
exchange_name,declare,File "/usr/local/lib/python3.7/site-packages/kombu/connection.py",line 525,in _ensured
return fun(*args,**kwargs)
File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py",in _publish
channel = self.channel
File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py",line 206,in _get_channel
channel = self._channel = channel()
File "/usr/local/lib/python3.7/site-packages/kombu/utils/functional.py",line 34,in __call__
value = self.__value__ = self.__contract__()
File "/usr/local/lib/python3.7/site-packages/kombu/messaging.py",line 221,in <lambda>
channel = ChannelPromise(lambda: connection.default_channel)
File "/usr/local/lib/python3.7/site-packages/kombu/connection.py",line 884,in default_channel
self._ensure_connection(**conn_opts)
File "/usr/local/lib/python3.7/site-packages/kombu/connection.py",line 439,in _ensure_connection
callback,timeout=timeout
File "/usr/local/lib/python3.7/site-packages/kombu/utils/functional.py",line 339,in retry_over_time
sleep(1.0)
python 中的代理连接字符串：
~$ env | grep broKER
CELERY_broKER=pyamqp://guest@172.23.0.3//
之前提示RabbitMQ没有运行，或者连接字符串坏；我的芹菜工人（消费者）进程能够使用相同的连接字符串进行连接。
# python shell
from src.celery import app
app.pool.connection
>>> Connection: amqp://guest:**@localhost:5672//
这就是我将应用程序/生产者连接到代理的方式。 celeryconfig.py 文件包含代理 url 后端、并发等的设置。
-------------- celery@f9ab48fc6b63 v5.0.5 (singularity)
--- ***** -----
-- ******* ---- Linux-4.15.0-20-generic-x86_64-with-debian-9.12 2021-03-05 07:56:29
- *** --- * ---
- ** ---------- [config]
- ** ---------- .> app: celery_statst_api:0x7f15b6de0450
- ** ---------- .> transport: amqp://guest:**@my-rabbit:5672//
- ** ---------- .> results: postgresql://docker:**@pg_db:5432/
- *** --- * --- .> concurrency: 16 (prefork)
-- ******* ---- .> task events: OFF (enable -E to monitor tasks in this worker)
--- ***** -----
-------------- [queues]
.> celery exchange=celery(direct) key=celery
[tasks]
. foo_task
. (long list of tasks)
[2021-03-05 07:56:30,564: INFO/MainProcess] Connected to amqp://guest:**@my-rabbit:5672//
[2021-03-05 07:56:30,581: INFO/MainProcess] mingle: searching for neighbors
[2021-03-05 07:56:31,622: INFO/MainProcess] mingle: all alone
[2021-03-05 07:56:31,647: INFO/MainProcess] celery@f9ab48fc6b63 ready.
解决方法
问题出在我的配置文件中。 Celery 没有找到属性 broker_url 并且没有给出任何警告。相反，芹菜默默地设置了一个默认的 amqp://guest:**@localhost:5672//。在此处查看详细信息https://github.com/celery/celery/issues/6661
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