我正在使用 celery 将任务发送到远程服务器并尝试返回结果。任务状态不断更新更新状态 http://docs.celeryproject.org/en/latest/reference/celery.app.task.html#celery.app.task.Task.update_state远程服务器上的方法。
我正在使用发送任务
app.send_task('task_name')
获取 celery 任务的结果是一个阻塞调用,我不希望我的 django 应用程序等待结果和超时。
所以我尝试运行另一个芹菜任务来获得结果。
@app.task(ignore_result=True)
def catpure_res(task_id):
task_obj = AsyncResult(task_id)
task_obj.get(on_message=on_msg)
但它会导致以下错误。
Traceback (most recent call last):
File "/usr/local/lib/python2.7/dist-packages/celery/app/trace.py", line 367, in trace_task
R = retval = fun(*args, **kwargs)
File "/usr/local/lib/python2.7/dist-packages/celery/app/trace.py", line 622, in __protected_call__
return self.run(*args, **kwargs)
File "/home/arpit/project/appname/tasks/results.py", line 42, in catpure_res
task_obj.get(on_message=on_msg)
File "/usr/local/lib/python2.7/dist-packages/celery/result.py", line 168, in get
assert_will_not_block()
File "/usr/local/lib/python2.7/dist-packages/celery/result.py", line 44, in assert_will_not_block
raise RuntimeError(E_WOULDBLOCK)
RuntimeError: Never call result.get() within a task!
See http://docs.celeryq.org/en/latest/userguide/tasks.html#task-synchronous-subtasks
有没有解决此错误的方法。我是否必须运行守护进程才能获取结果?