Question

我已经开始使用芹菜：

celery -A tasks worker --loglevel=info

然后使用以下命令启动python应用程序：

python app.py

当我要检查AsycnResults时，在app.py中

：

for id in task_id.keys():
    st[id] = str(AsyncResult(id).state)

它会引发错误消息：

Traceback (most recent call last):
  File "<...>/app.py", line 271, in update_task_status  
    **st[id] = str(AsyncResult(id).state)**  
  File "../anaconda3/lib/python3.7/site-packages/celery/result.py", line 473, in state
    return self._get_task_meta()['status']  
  File "<...>/anaconda3/lib/python3.7/site-packages/celery/result.py", line 412, in _get_task_meta
    return self._maybe_set_cache(self.backend.get_task_meta(self.id))  
  File "<...>/anaconda3/lib/python3.7/site-packages/celery/backends/base.py", line 386, in get_task_meta  
    meta = self._get_task_meta_for(task_id)    
  AttributeError: 'DisabledBackend' object has no attribute '_get_task_meta_for'

但是当我使用heroku启动应用程序和celery时，它运行正常：

heroku local  
<and the Procfile is like>  
web: gunicorn -b 0.0.0.0:8000 app:server --log-file=-
worker: celery -A tasks worker --loglevel=info

奇怪的是，当我想在heroku local下设置更多的worker /线程时，它再次给出相同的错误。

<heroku local's Procfile>
web: gunicorn --workers 6 --threads 2 -b 0.0.0.0:11000 app:server --log-file=-
#web: gunicorn -b 0.0.0.0:11000 app:server --log-file=-
worker: celery -A tasks worker --loglevel=info

在这两种情况下，芹菜似乎都可以正常工作，并且可以接收和处理消息：


[tasks]
  . tasks.query_adj_info
  . tasks.query_perf_by
  . tasks.query_perf_dai
  . tasks.query_perf_sum

[2019-07-03 21:56:59,539: INFO/MainProcess] Connected to redis://0.0.0.0:6379//
[2019-07-03 21:56:59,549: INFO/MainProcess] mingle: searching for neighbors
[2019-07-03 21:57:00,573: INFO/MainProcess] mingle: all alone
[2019-07-03 21:57:00,582: INFO/MainProcess] celery@r ready.
[2019-07-03 21:58:57,779: INFO/MainProcess] Received task: tasks.query[depid_eddd6a1a-610f-484f-b2fa-f3052e0c910b_celtid_perfa616b950-e7b8-4c5b-9d80-dc9907796be8]  
[2019-07-03 21:58:57,780: INFO/MainProcess] Received task: ....

Answer 1

检查您是否已配置后端

app = Celery('proj', backend='amqp://', broker='amqp://guest@localhost//')

如果您使用django，请尝试使用python manage.py shell而非仅使用python。我在纯python shell上的芹菜后端遇到问题。

AttributeError：“ DisabledBackend”对象对于<python + celery>没有属性'_get_task_meta_for'，但对于<heroku local>

1 个答案: