代码先锋网 代码片段及技术文章聚合

main.py

from celery import Celery
from flask import Flask,jsonify
import os
flask_app = Flask(__name__)
flask_app.config.update(
    CELERY_BROKER_URL='redis://127.0.0.1:6379/0',
    CELERY_RESULT_BACKEND='redis://127.0.0.1:6379/0'
)

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myproj.settings')
os.environ.setdefault('FORKED_BY_MULTIPROCESSING', '1')

def make_celery(app):
    celery = Celery(
        app.name,
        backend=app.config['CELERY_RESULT_BACKEND'],
        broker=app.config['CELERY_BROKER_URL']
    )
    celery.conf.update(app.config)

    class ContextTask(celery.Task):
        def __call__(self, *args, **kwargs):
            with app.app_context():
                return self.run(*args, **kwargs)

    celery.Task = ContextTask
    return celery

# celery = make_celery(flask_app)
celery = Celery(flask_app.name, broker=flask_app.config['CELERY_RESULT_BACKEND'], backend=flask_app.config['CELERY_BROKER_URL'])

@celery.task()
def add_together(a, b):
    value = a + b
    with open ('aaa.txt','a+') as file:
        file.writelines([str(value)])
    return a + b


@flask_app.route('/test')
def test():
    #add_together.delay(20,40)
    #return jsonify('success')
    task = add_together.delay(20,40)
    return jsonify(task.get(timeout=10))

if __name__=='__main__':
    flask_app.run(port=5000)

运行完后访问http://localhost/5000/test 发送消息到redis

然后启动cmd 窗口执行如下,需要注意的是celery从4开始不支持Windows，但是Windows还能运行，需要额外安装eventlet

celery -A main worker --loglevel=info -P eventlet

其中main是python主文件的名称

参考：
https://stackoverflow.com/questions/37255548/how-to-run-celery-on-windows

https://flask.palletsprojects.com/en/2.0.x/patterns/celery/

https://docs.celeryproject.org/en/stable/userguide/tasks.html

https://docs.celeryproject.org/en/latest/getting-started/first-steps-with-celery.html