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