celery==3.1.25  异步任务

django-celery==3.2.2  定时任务管理包

redis==2.10.6

django-redis-cache==1.7.1 方便配置Redis缓存

from .celery import app as celery_app

__all__ = ['celery_app']

from __future__ import absolute_import

import os

from celery import Celery

# set the default Django settings module for the 'celery' program.

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

from django.conf import settings  # noqa

app = Celery('dts')

# Using a string here means the worker will not have to

# pickle the object when using Windows.

app.config_from_object('django.conf:settings')

app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

@app.task(bind=True)

def debug_task(self):

    print('Request: {0!r}'.format(self.request))

#每30秒调用task.add

from datetime import timedelta

from celery.schedules import crontab #为了避免该行报错，在该文件添加绝对包含、from __future__ import absolute_import

CELERYBEAT_SCHEDULE = { 'add-every-30-seconds': { 'task': 'tasks.add', 'schedule': timedelta(seconds=30), 'args': (16, 16) },

    'sys_check_unpaid': {
         'task': 'dashboard.tasks.mdata_schedule',
         'schedule': crontab(minute=0, hour=8, day_of_month=11),
     },

}

 #crontab任务

 #每周一7:30调用task.add

 from celery.schedules import crontab

 CELERYBEAT_SCHEDULE = {

     # Executes every Monday morning at 7:30 A.M

     'add-every-monday-morning': {

         'task': 'tasks.add',

         'schedule': crontab(hour=7, minute=30, day_of_week=1),

         'args': (16, 16),

     },

 }

 import datetime

 import json

 from djcelery import models as celery_models

 from django.utils import timezone

 #创建任务

 def create_task(name, task, task_args, crontab_time):

     '''

     name # 任务名字

     task # 执行的任务 "myapp.tasks.add"

     task_args # 任务参数 {"x":1, "Y":1}

     crontab_time # 定时任务时间 格式：

     {

         'month_of_year': 9 # 月份

         'day_of_month': 5 # 日期

         'hour': 01 # 小时

         'minute':05 # 分钟

     }

     '''

     # task任务， created是否定时创建

     task, created = celery_models.PeriodicTask.objects.

                             get_or_create(name=name,task=task)

     # 获取 crontab

     crontab = celery_models.CrontabSchedule.objects.

                             filter(**crontab_time).first()

     if crontab is None:

     # 如果没有就创建，有的话就继续复用之前的crontab

         crontab = celery_models.CrontabSchedule.objects.

                             create(**crontab_time)

     task.crontab = crontab # 设置crontab

     task.enabled = True # 开启task

     task.kwargs = json.dumps(task_args) # 传入task参数

     expiration = timezone.now() + datetime.timedelta(day=1)

     task.expires = expiration # 设置任务过期时间为现在时间的一天以后

     task.save()

     return True

 #关闭任务

 def disable_task(name):

 '''

 关闭任务

 '''

     try:

         task = celery_models.PeriodicTask.objects.get(name=name)

         task.enabled = False # 设置关闭

         task.save()

         return True

     except celery_models.PeriodicTask.DoesNotExist:

         return True

python manage.py celery beat --loglevel=info

python manage.py celery worker --loglevel=info --beat

from djcelery import models as celery_models

from django.utils import timezone

@task()

def delete():

    '''

    删除任务

    从models中过滤出过期时间小于现在的时间然后删除

    '''

    return celery_models.PeriodicTask.objects.filter(

                            expires__lt=timezone.now()).delete()