django+celery实现异步消息队列

 
  步骤： 
 

 
创建项目  
 

 
   django-admin startproject project 
 

 
创建app 
 

 
  python manage.py startapp sendemail 
 

 
配置settings.py 
 

DEBUG = False
ALLOWED_HOSTS = ['127.0.0.1']

# celery
djcelery.setup_loader()
BROKER_URL = 'redis://127.0.0.1:6379/1'
CELERYBEAT_SCHEDULER = 'djcelery.schedulers.DatabaseScheduler'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_RESULT_BACKEND = 'redis://localhost:6379/2'
CELERY_TASK_SERIALIZER = 'json'
CELERY_ENABLE_UTC = True
TIME_ZONE = 'Asia/Shanghai'
CELERY_TIMEZONE = TIME_ZONE

# email
EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = ""
EMAIL_HOST_PASSWORD = ''
DEFAULT_FROM_EMAIL = EMAIL_HOST_USER = ""
EMAIL_PORT = 25
EMAIL_USE_TLS = True

 
tasks.py代码 
 

#coding=utf-8
from __future__ import absolute_import, unicode_literals
from celery import shared_task
from django.core.mail import send_mail
import logging

logger = logging.getLogger(__name__)


@shared_task
def celery_send_email(subject, message, from_email, recipient_list, **kwrags):
    try:
        logger.info("\n开始发送邮件")
        send_mail(subject, message, from_email, recipient_list, **kwrags)
        logger.info("邮件发送成功")
        return 'success!'
    except Exception as e:
        logger.error("邮件发送失败: {}".format(e))

 
初始化数据库 
 

 
  python manage.py makemigrations 
 

 
  python manage.py migrate  
 

 
配置我们的celery-beat 
 

 
  django提供了一个可视化的后台， 
 

 
  启动服务  
  python manage.py runserver  
  。 
 

 
  浏览器访问 ：120.0.0.1:8000/admin 
 

 
  这时候我们发现我们还没有管理员帐号？ 
 

 
  命令窗口通过python manage.py createsuperuser 创建管理员帐号 
 

 
后台 periodic task 中增加定时任务 
 

 
  这里配置定时任务可以做到最小单位 microsecond 微妙 
 

 
  Interval 间隔 
 

 
  Crontab 最小单位是Minute分钟 
 

 
  分 时 日 月 星期 
 

 
启动心跳 
 

 
  python manage.py celery beat 
 

 
启动 worker  
 

 
  python manage.py celery worker -l info  
 

 
启动 celery flower ，对任务进行监控 
 

 
  pip install celery-flower 
 

 
  python manage.py 
   celery flower

 
0.0.1:5555 
 

 
  每次运行异步task后, Celery都会返回AsyncResult对象作为结果. 你可以将其保存, 然后在将来查看该task是否运行成功和返回结果: 
 

django+celery实现异步消息队列

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