Question

描述

嗨，我正在学习Celery，我读了一篇博客。＆gt;＆gt; Celery and the Flask Application Factory Pattern - miguelgrinberg.com

所以我写了一个小程序，用Celery运行Flask

代码

应用.__初始化__。PY

from flask import Flask
from celery import Celery

celery = Celery(__name__, broker='amqp://127.0.0.1:5672/')

def create_app():
    app = Flask(__name__)

    @celery.task
    def add(x, y):
        print x+y

    @app.route('/')
    def index():
        add.delay(1, 3)
        return 'Hello World!'

    return app

manage.py

from app import create_app

app = create_app()

if __name__ == '__main__':
    app.run()

celery_worker_1.py

from app import celery, create_app()

f_app = create_app()
f_app.app_context().push()

celery_worker_2.py

from app import celery, create_app

@celery.task
def foo():
    print 'Balabala...'

f_app = create_app()
f_app.app_context().push()

问题

当我运行Flask服务器和芹菜使用时：

celery -A celery_worker_1 worker -l

Celery引发NotRegistered错误：

Traceback (most recent call last):   File "D:\Python27\lib\site-packages\billiard\pool.py", line 363, in workloop
    result = (True, prepare_result(fun(*args, **kwargs)))   File "D:\Python27\lib\site-packages\celery\app\trace.py", line 349, in
_fast_trace_task
    return _tasks[task].__trace__(uuid, args, kwargs, request)[0]   File "D:\Python27\lib\site-packages\celery\app\registry.py", line 26, in __missing__
    raise self.NotRegistered(key) NotRegistered: 'app.add'

但不是使用celery_worker_2：

celery -A celery_worker_2 worker -l info

任务正确运行：

[2015-11-28 15:45:56,299: INFO/MainProcess] Received task: app.add[cbe5e1d6-c5df-4141-9db1-e6313517c202]
[2015-11-28 15:45:56,302: WARNING/Worker-1] 4
[2015-11-28 15:45:56,371: INFO/MainProcess] Task app.add[cbe5e1d6-c5df-4141-9db1-e6313517c202] succeeded in 0.0699999332428s: None

为什么Celery可以使用celery_worker_1的代码正确运行？

PS：我不擅长英语，你可以指出我，如果你不能理解，我想再次描述一下。谢谢！的

引发错误：当我将Cesk与Celery一起使用时，NotRegistered

0 个答案: