Django实现celery定时任务过程解析

1.首先在项目同名目录下建一个celery.py

from __future__ import absolute_importimport osfrom celery import Celeryfrom datetime import timedeltafrom kombu import Queue# set the default Django settings module for the ’celery’ program.os.environ.setdefault(’DJANGO_SETTINGS_MODULE’, ’OpsManage.settings’)from django.conf import settingsapp = Celery(’OpsManage’)# Using a string here means the worker will not have to# pickle the object when using Windows.# 配置celeryclass Config: BROKER_URL = ’amqp://guest:guest@localhost:5672//’ CELERY_RESULT_BACKEND = ’redis://localhost:6379’ CELERY_ACCEPT_CONTENT = [’application/json’] CELERY_TASK_SERIALIZER = ’json’ CELERY_RESULT_SERIALIZER = ’json’ CELERY_TASK_RESULT_EXPIRES = 60 * 60 CELERY_TIMEZONE = ’Asia/Shanghai’ CELERY_ENABLE_UTC = True CELERY_ANNOTATIONS = {’*’: {’rate_limit’: ’500/s’}} CELERYBEAT_SCHEDULER = ’djcelery.schedulers.DatabaseScheduler’app.config_from_object(Config)# 到各个APP里自动发现tasks.py文件app.autodiscover_tasks()#crontab configapp.conf.update( CELERYBEAT_SCHEDULE = { # 每隔30s执行一次函数 ’every-30-min-add’: { ’task’: ’apps.tasks.celery_assets.push_host_by_salt_tasks’, ’schedule’: timedelta(seconds=30) # # 每天凌晨12点 # ’schedule’: crontab(minute=0, hour=0) }, },)# kombu : Celery 自带的用来收发消息的库, 提供了符合 Python 语言习惯的, 使用 AMQP 协议的高级接口Queue(’transient’, routing_key=’transient’,delivery_mode=1)

2.在settings.py里配置celery

INSTALLED_APPS = [ ...... ’django_celery_beat’, ’django_celery_results’,]

3.在项目同名目录下的__init__.py文件里申明celery任务，记得要去检测呀

# coding:utf-8from __future__ import absolute_import, unicode_literals# This will make sure the app is always imported when# Django starts so that shared_task will use this app.from celery import app as celery_app__all__ = [’celery_app’]import pymysqlpymysql.install_as_MySQLdb()

4.在task.py里执行任务的函数上加@

from celery import task# 定时任务@taskdef push_host_by_salt_tasks(): “”“balabala”“” return ’这里是定时任务’

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持好吧啦网。