Django celery异步任务实现代码示例

最近项目中用到celery很多,Django快速接入celery,这里给份教程。

准备

pip安装celery、flower、eventlet

快速接入

1.项目目录的__init__文件

from __future__ import absolute_import

# This will make sure the app is always imported when

# Django starts so that shared_task will use this app.

from .celerypro import app as celery_app

2.celerypro.py文件

from __future__ import absolute_import

import os

from celery import Celery

from django.conf import settings

# set the default Django settings module for the 'celery' program.

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'voice_quality_assurance_configure.settings') #修改项目配置文件的地址

app = Celery('voice_quality_assurance_configure') #修改项目目录名称

# Using a string here means the worker will not have to

# pickle the object when using Windows.

app.config_from_object('voice_quality_assurance_configure.celeryconfig') #修改celery配置文件的地址

app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

3.celeryconfig.py文件,更多配置项,可以查看官方文档。

from kombu import Queue

BROKER_URL = 'amqp://用户名:密码@ip:5672'# 指定 Broker

CELERY_RESULT_BACKEND = 'rpc://用户名:密码@ip:5672'# 指定 Backend

CELERY_TIMEZONE='Asia/Shanghai'# 指定时区,默认是 UTC

CELERY_TASK_SERIALIZER = 'pickle'

CELERY_RESULT_SERIALIZER = 'pickle'

CELERY_ACCEPT_CONTENT = ['pickle', 'json']

CELERY_IGNORE_RESULT = True

# CELERY_TIMEZONE='UTC'

CELERY_IMPORTS = (

# 指定导入的任务模块

'apps.mission.tasks'

)

CELERY_QUEUES = (

Queue('default', routing_key='default'), #声明队列和对应路由键

Queue('worker_queue', routing_key='worker'), #声明队列和对应路由键

)

CELERY_ROUTES = {

'apps.mission.tasks.createsingletask': {'queue': 'worker_queue', 'routing_key': 'worker'},

}

app代码如何使用

app下新建tasks.py文件,名字一定要是tasks。(我这里是mission app下的tasks.py)

from celery import shared_task

@shared_task()

def createsingletask():

print(test)

app下views调用如下:(我这里是mission app下的views.py)

from .tasks import createsingletask

createsingletask.apply_async(())

快速测试和监控

启动多个celery worker,-A 指定项目目录, -P 指定方式,我这里以协程方式运行, -n指定name

celery worker -A voice_quality_assurance_configure --loglevel=info -P eventlet -n worker1

celery worker -A voice_quality_assurance_configure --loglevel=info -P eventlet -n worker2

celery worker -A voice_quality_assurance_configure --loglevel=info -P eventlet -n worker3

celery worker -A voice_quality_assurance_configure --loglevel=info -P eventlet -n worker4

celery worker -A voice_quality_assurance_configure --loglevel=info -P eventlet -n worker5

启动flower监控

celery flower --broker=amqp://用户名:密码@ip:5672 --broker-api=http://用户名:密码@ip:15672/api/

查看监控,注意这里的监控数据是不持久化的。

以上是 Django celery异步任务实现代码示例 的全部内容, 来源链接: utcz.com/z/352765.html

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