在查看了很多关于弦回调未执行并尝试它们的解决方案后,我仍然无法使其工作。实际上,由于某种原因,chord_unlock方法也未能执行。
celery.py
from __future__ import absolute_import
from celery import Celery
app = Celery('sophie',
broker='redis://localhost:6379/2',
backend='redis://localhost:6379/2',
include=['sophie.lib.chord_test'])
app.conf.update(
CELERY_ACCEPT_CONTENT=["json"],
CELERY_TASK_SERIALIZER="json",
CELERY_TRACK_STARTED=True,
CELERYD_PREFETCH_MULTIPLIER=1, # NO PREFETCHING OF TASKS
BROKER_TRANSPORT_OPTIONS = {
'priority_steps': [0, 1] # ALLOW ONLY 2 TASK PRIORITIES
}
)
if __name__ == '__main__':
app.start()
chord_test.py
from __future__ import absolute_import
from sophie.celery import app
from celery import chord
@app.task(name='sophie.lib.add')
def add(x, y):
return x + y
@app.task(name='sophie.lib.tsum')
def tsum(numbers):
return sum(numbers)
if __name__ == '__main__':
tasks = [add.s(100, 100), add.s(200, 200)]
chord(tasks, tsum.s()).apply_async()
我的工作日志文件输出如下:
$ celery worker -l info --app=sophie.celery -n worker1.%h
-------------- celery@worker1.vagrant-ubuntu-11 v3.1.6 (Cipater)
---- **** -----
--- * *** * -- Linux-3.0.0-12-server-x86_64-with-Ubuntu-11.10-oneiric
-- * - **** ---
- ** ---------- [config]
- ** ---------- .> broker: redis://localhost:6379/2
- ** ---------- .> app: sophie:0x3554250
- ** ---------- .> concurrency: 1 (prefork)
- *** --- * --- .> events: OFF (enable -E to monitor this worker)
-- ******* ----
--- ***** ----- [queues]
-------------- .> celery exchange=celery(direct) key=celery
[tasks]
. sophie.lib.add
. sophie.lib.tsum
[2013-12-12 19:37:26,499: INFO/MainProcess] Connected to redis://localhost:6379/2
[2013-12-12 19:37:26,506: INFO/MainProcess] mingle: searching for neighbors
[2013-12-12 19:37:27,512: INFO/MainProcess] mingle: all alone
[2013-12-12 19:37:27,527: WARNING/MainProcess] celery@worker1.vagrant-ubuntu-11 ready.
[2013-12-12 19:37:29,723: INFO/MainProcess] Received task: sophie.lib.add[b7d504c1-217f-43a9-b57e-86f0fcbdbe22]
[2013-12-12 19:37:29,734: INFO/MainProcess] Task sophie.lib.add[b7d504c1-217f-43a9-b57e-86f0fcbdbe22] succeeded in 0.009769904
00522s: 200
[2013-12-12 19:37:29,735: INFO/MainProcess] Received task: sophie.lib.add[eb01a73e-f6c8-401d-8049-6cdbc5f0bd90]
[2013-12-12 19:37:29,737: INFO/MainProcess] Task sophie.lib.add[eb01a73e-f6c8-401d-8049-6cdbc5f0bd90] succeeded in 0.001446505
00442s: 400
完全没有调用chord_unlock。以下是更多输出,以提供进一步上下文:
$ sudo pip freeze | egrep 'celery|kombu|billiard'
billiard==3.3.0.12
celery==3.1.6
kombu==3.0.7
$ uname -a
Linux vagrant-ubuntu-11 3.0.0-12-server #20-Ubuntu SMP Fri Oct 7 16:36:30 UTC 2011 x86_64 x86_64 x86_64 GNU/Linux
$ redis-server --version
Redis server version 2.2.11 (00000000:0)