django之定时任务管理（day-26）

定期任务：Periodic Tasks
首先安装beat
pip install django-celery-beat
然后在settings里面加上

INSTALLED_APPS = (
    ...,
    'django_celery_beat',
)

然后同步数据库

python manage.py makemigrations
python manage.py migrate

然后启动beat服务
celery -A myyuque beat -l info —scheduler django_celery_beat.schedulers:DatabaseScheduler
接着去我们的项目看看

intervals：管理时间间隔的地方
clocked：每天/周/月某时候去执行
crontabs：
periodic tasks：管理任务
solar events：
附上好像没效果的代码

from __future__ import absolute_import, unicode_literals
import os
from celery import Celery
from celery.schedules import crontab
from celery1.tasks import add
# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'settings.base')
app = Celery('myyuque')
# Using a string here means the worker doesn't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.
app.config_from_object('settings.base', namespace='CELERY')
# Load task modules from all registered Django app configs.
app.autodiscover_tasks()
@app.task(bind=True)
def debug_task(self):
    print('Request: {0!r}'.format(self.request))
# 手动设置周期性任务
app.conf.beat_schedule = {
    'add-every-30-seconds': {
        'task': 'tasks.add',
        'schedule': 30.0,
        'args': (16, 16)
    },
}
# 这里代表项目启动时开启的定时任务
@app.on_after_configure.connect
def setup_periodic_tasks(sender, **kwargs):
    # Calls test('hello') every 10 seconds.
    sender.add_periodic_task(10.0, test.s('hello'), name='add every 10')
    # Calls test('world') every 30 seconds
    sender.add_periodic_task(30.0, test.s('world'), expires=10)
    # Executes every Monday morning at 7:30 a.m.
    sender.add_periodic_task(
        crontab(hour=7, minute=30, day_of_week=1),
        test.s('Happy Mondays!'),
    )
@app.task
def test(arg):
    print(arg)