django、celery异步发邮件

django、celery异步发邮件

---

• 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：

  •  1 from celery import Celery
     2 from django.conf import settings
     3 from django.core.mail import send_mail
     4 
     5 app = Celery('celery_tasks.tasks', broker='redis://127.0.0.1:6379/8')
     6 
     7 
     8 @app.task
     9 def send_register_active_email(email, username, token):
    10     subject = '测试'
    11     message = ""
    12     from_email = settings.EMAIL_FROM
    13     recipient_list = [email]
    14     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(
    15         username, token)
    16     send_mail(subject, message, from_email, recipient_list, html_message=html_message)

    
    
  • 调用该方法：

  •  1 class Register(View):
     2     def get(self, request):
     3         return render(request, 'user/register.html')
     4 
     5     def post(self, request):
     6         username = request.POST.get('username', '')
     7         password = request.POST.get('password', '')
     8         email = request.POST.get('email', '')
     9 
    10         # 校验用户名是否重复
    11         try:
    12             user = User.objects.get(username=username)
    13         except User.DoesNotExist:
    14             user = None
    15 
    16         if user:
    17             data = {'errmsg': '用户名已存在'}
    18             return JsonResponse(data)
    19         # try:
    20         #     user = User.objects.ger(email=email)
    21         # except User.DoesNotExist:
    22         #     user = None
    23         # if user:
    24         #     data = {'errmsg': '邮箱已被注册'}
    25         #     return JsonResponse(data)
    26         user = User.objects.create_user(username=username, password=password, email=email)
    27         user.is_active = 0
    28         user.save()
    29 
    30         info = {'user_id': user.id}
    31         serializer = Serializer(settings.SECRET_KEY, 3600 * 2)
    32         token = serializer.dumps(info).decode()
    33 
    34         # 发邮件
    35         send_register_active_email.delay(email, username, token)
    36         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

    •  1 from celery import Celery
       2 from django.conf import settings
       3 from django.core.mail import send_mail
       4 import os
       5 import django
       6 
       7 os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'dream.settings')
       8 django.setup()
       9 
      10 app = Celery('celery_tasks.tasks', broker='redis://127.0.0.1:6379/8')
      11 
      12 
      13 @app.task
      14 def send_register_active_email(email, username, token):
      15     subject = '测试'
      16     message = ""
      17     from_email = settings.EMAIL_FROM
      18     recipient_list = [email]
      19     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(
      20         username, token)
      21     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