ps:百度是xxx的走狗python
回到正題,今天研究了下用一個py文件做爲celery的配置文件,因此,仍是參考昨天的例子:http://my.oschina.net/hochikong/blog/396079 json
咱們把celery.py的配置項拿出來,在proj目錄中建立celeryconfig.py,內容以下:app
CELERY_TASK_RESULT_EXPIRES=3600 CELERY_TASK_SERIALIZER='json' CELERY_ACCEPT_CONTENT=['json'] CELERY_RESULT_SERIALIZER='json'
修改celery.py:python2.7
from __future__ import absolute_import from celery import Celery app = Celery('proj', broker='amqp://guest@localhost//', backend='amqp://guest@loaclhost//', include=['proj.agent']) #app.conf.update( # CELERY_TASK_RESULT_EXPIRES=3600, # CELERY_TASK_SERIALIZER='json', # CELERY_ACCEPT_CONTENT=['json'], # CELERY_RESULT_SERIALIZER='json' #) app.config_from_object('proj.celeryconfig') if __name__ == '__main__': app.start()
使用app.config_from_object()導入配置,注意須要以以下格式才能導入:path:module,celeryconfig文件要和celery文件在同一目錄ui
啓動一下:.net
root@workgroup0:~/celeryapp/configtest# celery -A proj worker -l info /usr/local/lib/python2.7/dist-packages/celery/platforms.py:766: RuntimeWarning: You are running the worker with superuser privileges, which is absolutely not recommended! Please specify a different user using the -u option. User information: uid=0 euid=0 gid=0 egid=0 uid=uid, euid=euid, gid=gid, egid=egid, -------------- celery@workgroup0 v3.1.17 (Cipater) ---- **** ----- --- * *** * -- Linux-3.13.0-24-generic-x86_64-with-Ubuntu-14.04-trusty -- * - **** --- - ** ---------- [config] - ** ---------- .> app: proj:0x7fade8bc1550 - ** ---------- .> transport: amqp://guest:**@localhost:5672// - ** ---------- .> results: amqp://guest@loaclhost// - *** --- * --- .> concurrency: 1 (prefork) -- ******* ---- --- ***** ----- [queues] -------------- .> celery exchange=celery(direct) key=celery [tasks] . proj.agent.add . proj.agent.mul [2015-04-05 16:26:11,577: INFO/MainProcess] Connected to amqp://guest:**@127.0.0.1:5672// [2015-04-05 16:26:11,603: INFO/MainProcess] mingle: searching for neighbors [2015-04-05 16:26:12,622: INFO/MainProcess] mingle: all alone [2015-04-05 16:26:12,648: WARNING/MainProcess] celery@workgroup0 ready. ^C worker: Hitting Ctrl+C again will terminate all running tasks! worker: Warm shutdown (MainProcess)
啓動成功了。code
途中的碰壁經歷:由於我一開始是直接把celery.py的配置內容複製過來,沒有去掉配置內容間的逗號,像這樣:orm
CELERY_TASK_RESULT_EXPIRES=3600, CELERY_TASK_SERIALIZER='json', CELERY_ACCEPT_CONTENT=['json'], CELERY_RESULT_SERIALIZER='json'
致使沒法啓動worker。後來看了看官方文檔的example,才搞定了這一問題。只要去掉那些逗號便可。blog
反思:雖然celery還能夠使用這種形式的配置:ip
from celery import Celery app = Celery() class Config: CELERY_ENABLE_UTC = True CELERY_TIMEZONE = 'Europe/London' app.config_from_object(Config) # or using the fully qualified name of the object: # app.config_from_object('module:Config')
還能夠使用app.config_from_envvar()來配置,可是我以爲我用的那種方式更加方便。並且把配置內容都放在一個單獨文件中,避免修改源碼。
SORA可能會使用app.conf.update的方式配合configparser對worker進行配置,一方面能避免用戶直接和celery配置打交道,同時還能統一整個項目的配置方式(參考openstack的各類conf文件)