Question

这些天我通过开发我自己的Reddit克隆（在ubuntu 14.04 LTS上）学习Python（2.7）/ Django（1.5）。我试图将Celery（3.1）与Redis合并，使用它定期运行排名算法作为任务（在我的本地设置上）。但遗憾的是，即使只执行一次，我也无法完成这项简单的任务！你能帮我看看我做错了什么吗？

这是目录结构：

-unconnectedreddit (manage.py is here)
    -links (tasks.py, models.py, views.py, admin.py)
    -unconnectedreddit (celery.py, __init.py___, settings.py, urls.py)
        -static
        -templates

Celery.py ：

from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'unconnectedreddit.settings')

app = Celery('unconnectedreddit', broker='redis://localhost:6379/0', backend='redis://localhost:6379/0',include=['unconnectedreddit.links.tasks'])
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS) 

app.conf.update(
    CELERY_TASK_RESULT_EXPIRES=3600,
)

if __name__ == '__main__':
    app.start()

settings.py 的添加如下。请注意，添加＆＃39; djcelery＆＃39;之后我确实运行了migrate安装应用程序：

INSTALLED_APPS = ('djcelery',)

import djcelery
djcelery.setup_loader()

BROKER_URL = 'redis://localhost:6379/0'

CELERY_IMPORTS = ('links.tasks', )  

CELERY_ALWAYS_EAGER = False

CELERY_RESULT_BACKEND = 'redis://localhost:6379/0'

CELERY_ACCEPT_CONTENT = ['json']
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_IGNORE_RESULT=True

from datetime import timedelta

CELERYBEAT_SCHEDULE = {
    'rank_all-every-30-seconds': {
        'task': 'tasks.rank_all',
        'schedule': timedelta(seconds=30),
    },
}

CELERY_TIMEZONE = 'UTC'

__初始化__吡啶：

from __future__ import absolute_import
from .celery import app as celery_app1

tasks.py ：

import os
from unconnectedreddit import celery_app1
import time
from links.models import Link

@celery_app1.task
def rank_all():
    for link in Link.with_votes.all():
        link.set_rank() #ranks interesting 'links' submitted by users

我在终端上运行此命令以启动工作人员：celery -A unconnectedreddit worker -l info

我得到的输出如下：

 -------------- celery@has-VirtualBox v3.1.18 (Cipater)
---- **** ----- 
--- * ***  * -- Linux-3.16.0-30-generic-x86_64-with-Ubuntu-14.04-trusty
-- * - **** --- 
- ** ---------- [config]
- ** ---------- .> app:         unconnectedreddit:0x7f938b838910
- ** ---------- .> transport:   redis://localhost:6379/0
- ** ---------- .> results:     redis://localhost:6379/0
- *** --- * --- .> concurrency: 1 (prefork)
-- ******* ---- 
--- ***** ----- [queues]
 -------------- .> celery           exchange=celery(direct) key=celery


[tasks]
  . links.tasks.rank_all

[2015-06-04 12:01:17,083: INFO/MainProcess] Connected to redis://localhost:6379/0
[2015-06-04 12:01:17,098: INFO/MainProcess] mingle: searching for neighbors
[2015-06-04 12:01:18,107: INFO/MainProcess] mingle: all alone
/home/has/.virtualenvs/unconnectedreddit/local/lib/python2.7/site-packages/celery/fixups/django.py:265: UserWarning: Using settings.DEBUG leads to a memory leak, never use this setting in production environments!
  warnings.warn('Using settings.DEBUG leads to a memory leak, never '

[2015-06-04 12:01:18,136: WARNING/MainProcess] /home/has/.virtualenvs/unconnectedreddit/local/lib/python2.7/site-packages/celery/fixups/django.py:265: UserWarning: Using settings.DEBUG leads to a memory leak, never use this setting in production environments!
  warnings.warn('Using settings.DEBUG leads to a memory leak, never '

[2015-06-04 12:01:18,137: WARNING/MainProcess] celery@has-VirtualBox ready.

那就是它。我每30秒就开始定期运行这个任务（参见我的CELERYBEAT_SCHEDULE）。但是我的代码并没有导致它执行一次 - 我的reddit克隆上的排名根本没有变化。任何专家都可以指出我在这个设置中缺少的东西吗？

Answer 1

错误的任务名称。通过将任务装饰器更改为@celery_app1.task(name='tasks.rank_all')并调整节拍时间表以包含正确的名称来解决此问题：

CELERYBEAT_SCHEDULE = {
    'tasks.rank_all': {
        'task': 'tasks.rank_all',
        'schedule': timedelta(seconds=30),
    },
}

使用Redis经纪人的芹菜工人无法执行Django任务

1 个答案: