Question

即使在Flask应用程序上下文中，运行celery任务时遇到以下错误：

raised unexpected: RuntimeError('Working outside of application context.\n\nThis typically means that you attempted to use functionality that needed\nto interface with the current application object in some way. To solve\nthis, set up an application context with app.app_context().  See the\ndocumentation for more information.',)

Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/celery/app/trace.py", line 382, in trace_task
    R = retval = fun(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/celery/app/trace.py", line 641, in __protected_call__
    return self.run(*args, **kwargs)
  File "/app/example.py", line 172, in start_push_task
    }, data=data)
  File "/app/push.py", line 65, in push
    if user and not g.get('in_celery_task') and 'got_user' not in g:
  File "/usr/lib/python3.6/site-packages/werkzeug/local.py", line 347, in __getattr__
    return getattr(self._get_current_object(), name)
  File "/usr/lib/python3.6/site-packages/werkzeug/local.py", line 306, in _get_current_object
    return self.__local()
  File "/usr/lib/python3.6/site-packages/flask/globals.py", line 44, in _lookup_app_object
    raise RuntimeError(_app_ctx_err_msg)
RuntimeError: Working outside of application context.

This typically means that you attempted to use functionality that needed
to interface with the current application object in some way. To solve
this, set up an application context with app.app_context().  See the
documentation for more information.

有什么办法解决这个问题？

Answer 1

对我来说，问题是我有import celery而不是from app import celery。

还有更多我的设置代码，供将来偶然在这里遇到的任何人使用：

app.py

def make_celery(app):
    app.config['broker_url'] = 'amqp://rabbitmq:rabbitmq@rabbit:5672/'
    app.config['result_backend'] = 'rpc://rabbitmq:rabbitmq@rabbit:5672/'

    celery = Celery(app.import_name, backend=app.config['result_backend'], broker=app.config['broker_url'])
    celery.conf.update(app.config)

    class ContextTask(Task):
        abstract = True

        def __call__(self, *args, **kwargs):
            with app.test_request_context():
                g.in_celery_task = True
                res = self.run(*args, **kwargs)
                return res

    celery.Task = ContextTask
    celery.config_from_object(__name__)
    celery.conf.timezone = 'UTC'
    return celery

celery = make_celery(app)

在另一个文件中：

from app import celery

烧瓶应用上下文之外的芹菜

1 个答案: