如何向Celery动态添加/删除定期任务(celerybeat) [英] How to dynamically add / remove periodic tasks to Celery (celerybeat)
问题描述
如果我定义的函数如下:
If I have a function defined as follows:
def add(x,y):
return x+y
是否可以动态地将此函数添加为芹菜PeriodicTask并在运行时启动?我想能够做类似(伪代码)的事情:
Is there a way to dynamically add this function as a celery PeriodicTask and kick it off at runtime? I'd like to be able to do something like (pseudocode):
some_unique_task_id = celery.beat.schedule_task(add, run_every=crontab(minute="*/30"))
celery.beat.start(some_unique_task_id)
我还想使用(伪代码)之类的东西来动态停止或删除该任务:
I would also want to stop or remove that task dynamically with something like (pseudocode):
celery.beat.remove_task(some_unique_task_id)
或
celery.beat.stop(some_unique_task_id)
我不使用djcelery ,它使您可以通过django管理员管理定期任务。
FYI I am not using djcelery, which lets you manage periodic tasks via the django admin.
推荐答案
不,很抱歉,使用
但是做你想做的事很容易扩展,例如django-celery
调度程序只是一个将调度写入数据库
的子类(顶部有一些优化)。
But it's easily extensible to do what you want, e.g. the django-celery scheduler is just a subclass reading and writing the schedule to the database (with some optimizations on top).
甚至可以将django-celery调度程序用于非Django项目。
Also you can use the django-celery scheduler even for non-Django projects.
像这样的事情:
-
安装django + django-celery:
Install django + django-celery:
$ pip install -U django django-celery
$ pip install -U django django-celery
将以下设置添加到celeryconfig中:
Add the following settings to your celeryconfig:
DATABASES = {
'default': {
'NAME': 'celerybeat.db',
'ENGINE': 'django.db.backends.sqlite3',
},
}
INSTALLED_APPS = ('djcelery', )
创建数据库表:
Create the database tables:
$ PYTHONPATH=. django-admin.py syncdb --settings=celeryconfig
使用数据库调度程序启动celerybeat:
Start celerybeat with the database scheduler:
$ PYTHONPATH=. django-admin.py celerybeat --settings=celeryconfig \
-S djcelery.schedulers.DatabaseScheduler
还有 djcelerymon
命令,该命令可用于非Django项目
来启动celerycam和一个Django Admin网络服务器,在相同的过程中,您可以
使用它来在一个不错的Web界面中编辑定期任务:
Also there's the djcelerymon
command which can be used for non-Django projects
to start celerycam and a Django Admin webserver in the same process, you can
use that to also edit your periodic tasks in a nice web interface:
$ djcelerymon
(请注意,出于某些原因,不能使用Ctrl + C停止djcelerymon,您
必须使用Ctrl + Z +杀死%1)
(Note for some reason djcelerymon can't be stopped using Ctrl+C, you have to use Ctrl+Z + kill %1)
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