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在flask应用中使用celery任务队列,celery队列无法正常启动

最近在写一个flask应用,想使用celery做任务队列,就去flask官网上找了样例程序 ,然后复制到本机上执行了一下,结果celery没有正常启动.
只有一个源文件test.py,rabbitmq已配置并正常启动.
代码如下:


 from flask import Flask

from celery import Celery

def make_celery(app):
    celery = Celery(app.import_name, broker=app.config['CELERY_BROKER_URL'], backend=app.config['CELERY_RESULT_BACKEND'])
    celery.conf.update(app.config)
    TaskBase = celery.Task
    class ContextTask(TaskBase):
        abstract = True
        def __call__(self, *args, **kwargs):
            with app.app_context():
                return TaskBase.__call__(self, *args, **kwargs)
    celery.Task = ContextTask
    return celery

app = Flask(__name__)
app.config.update(
        CELERY_BROKER_URL='amqp://guest@localhost//',
        CELERY_RESULT_BACKEND='amqp://guest@localhost//'
)

celery = make_celery(app)


@celery.task()
def add_together(a, b):
    return a + b

result = add_together.delay(23, 42)
result.wait()

差不多就是样例代码直接拷贝下来用了.
然后我在当前目录下执行 celery -A test worker --loglevel=info 和 celery -A test.celery worker --loglevel=info 之后阻塞,同时没有任何提示.
我另外打开一个终端,在这个目录下执行 python test.py 之后发生阻塞.用pdb调试发现阻塞在最后一行 result.wait() .
请问我的配置过程出现什么问题了?

python flask 异步任务队列 celery

9 years, 7 months ago

野生的路人

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野生的路人 9 years, 7 months ago

Answer 1

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 # coding: utf-8

from celery import Celery
from flask import Flask

def make_celery(app):
    celery = Celery(app.import_name, broker=app.config['CELERY_BROKER_URL'], backend=app.config['CELERY_RESULT_BACKEND'])
    celery.conf.update(app.config)
    TaskBase = celery.Task
    class ContextTask(TaskBase):
        abstract = True
        def __call__(self, *args, **kwargs):
            with app.app_context():
                return TaskBase.__call__(self, *args, **kwargs)
    celery.Task = ContextTask
    return celery

app = Flask(__name__)
app.config.update(
        CELERY_BROKER_URL='amqp://guest@localhost//',
        CELERY_RESULT_BACKEND='amqp://guest@localhost//'
)

celery = make_celery(app)


@celery.task(name='add_together')
def add_together(a, b):
    return a + b

if __name__ == '__main__':
  result = add_together.delay(23, 42)
  result.wait()

由于你没有提供错误信息，只能改对之后告诉你了
调用 celery -A test.celery worker --loglevel=info 启动 celery ,然后用 python test.py 调用脚本

answered 9 years, 7 months ago

kazama

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kazama answered 9 years, 7 months ago

在flask应用中使用celery任务队列,celery队列无法正常启动

野生的路人

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kazama

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