Celery的简单使用

目录结构

.
├── celery_tasks
│   ├── __init__.py
│   ├── config.py
│   ├── email
│   │   ├── __init__.py
│   │   └── tasks.py
│   ├── html
│   │   ├── __init__.py
│   │   └── tasks.py
│   ├── main.py

config.py

# celery配置文件

# 指定任务队列的位置
broker_url = "redis://192.168.103.210/7"

main.py

from celery import Celery
import os

# 告诉celery 如果需要使用Django的配置文件,应该去那里加载
os.environ.setdefault("DJANGO_SETTINGS_MODULE", "project.settings.dev")

# 1.创建celery实例对象
celery_app = Celery('project')

# 2.加载配置文件
celery_app.config_from_object('celery_tasks.config')

# 3.自动注册异步任务
celery_app.autodiscover_tasks(['celery_tasks.email', 'celery_tasks.html'])

celery_tasks/email/tasks.py

from celery_tasks.main import celery_app
from django.core.mail import send_mail
from django.conf import settings


@celery_app.task(name='send_verify_email')
def send_verify_email(to_email, verify_url):
    """
    发激活邮箱的邮件
    :param to_email: 收件人邮箱
    :param verify_url: 邮箱激活url
    :return:
    """
    subject = "邮箱验证"  # 邮件主题/标题
    html_message = '<p>尊敬的用户您好！</p>' \
                   '<p>您的邮箱为：%s 。请点击此链接激活您的邮箱：</p>' \
                   '<p><a href="%s">%s<a></p>' % (to_email, verify_url, verify_url)
    # send_mail(subject:标题, message:普通邮件正文, 发件人, [收件人], html_message=超文本的邮件内容)
    send_mail(subject, '', settings.EMAIL_FROM, [to_email], html_message=html_message)

运行celery

运行命令:
celery -A celery_tasks.main worker -l info

函数调用

class EmailSerializer(serializers.ModelSerializer):
    """更新邮箱序列化器"""
    ...
    def update(self, instance, validated_data):
        instance.email = validated_data.get('email')
        instance.save()
        verify_url = instance.generate_email_verify_url()
        # 使用delay函数
        send_verify_email.delay(instance.email, verify_url=verify_url)
        return instance