django、celery异步发邮件

django、celery异步发邮件

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• django自带的send_mail发邮件功能执行发邮件功能会因为网络的原因造成花费的时间过长，为了解决这个问题，可以用celery + redis代替
  
• 安装包：
  • pip install celery
  • pip install redis
• 在django的根目录下新建celery_tasks文件夹，在该文件夹下新建tasks.py：

  •  from celery import Celery
     from django.conf import settings
     from django.core.mail import send_mail
    
     app = Celery('celery_tasks.tasks', broker='redis://127.0.0.1:6379/8')
    
     @app.task
     def send_register_active_email(email, username, token):
         subject = '测试'
         message = ""
         from_email = settings.EMAIL_FROM
         recipient_list = [email]
         html_message = '<h1>欢迎{}来到测试</h1>请点击下面链接激活<br><a href="http://http://127.0.0.1:8000/user/active?token={}">点击此处激活</a>'.format(
             username, token)
         send_mail(subject, message, from_email, recipient_list, html_message=html_message)

    
    

  • 调用该方法：

  •  class Register(View):
         def get(self, request):
             return render(request, 'user/register.html')
    
         def post(self, request):
             username = request.POST.get('username', '')
             password = request.POST.get('password', '')
             email = request.POST.get('email', '')
    
             # 校验用户名是否重复
             try:
                 user = User.objects.get(username=username)
             except User.DoesNotExist:
                 user = None
    
             if user:
                 data = {'errmsg': '用户名已存在'}
                 return JsonResponse(data)
             # try:
             #     user = User.objects.ger(email=email)
             # except User.DoesNotExist:
             #     user = None
             # if user:
             #     data = {'errmsg': '邮箱已被注册'}
             #     return JsonResponse(data)
             user = User.objects.create_user(username=username, password=password, email=email)
             user.is_active = 0
             user.save()
    
             info = {'user_id': user.id}
             serializer = Serializer(settings.SECRET_KEY, 3600 * 2)
             token = serializer.dumps(info).decode()
    
             # 发邮件
             send_register_active_email.delay(email, username, token)
             return redirect(reverse('user:login'))

  • worker端配置：
    • 将django项目文件复制到另一个文件夹
    • 修改tasks.py文件，设置初始化

    •  from celery import Celery
       from django.conf import settings
       from django.core.mail import send_mail
       import os
       import django
      
       os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'dream.settings')
       django.setup()
      
       app = Celery('celery_tasks.tasks', broker='redis://127.0.0.1:6379/8')
      
       @app.task
       def send_register_active_email(email, username, token):
           subject = '测试'
           message = ""
           from_email = settings.EMAIL_FROM
           recipient_list = [email]
           html_message = '<h1>欢迎{}来到测试</h1>请点击下面链接激活<br><a href="http://127.0.0.1:8000/user/active?token={}">点击此处激活</a>'.format(
               username, token)
           send_mail(subject, message, from_email, recipient_list, html_message=html_message)

    • worker端监听
    • 进入 worker端的代码的celery_tasks目录下：
      • celery -A tasks worker -l info
      • win10下可能报错：
        • pip install eventlet
        • celery -A tasks worker -l info -P eventlet
    • 当django启动调用send_mail的时候就会将发邮件的任务交给celery执行