celery 组件在django环境应用

第一步安装

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1	pip install celery==4.4

第二步 配置环境

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# ############################# celery 配置连接redis ############################# #添加密码的 CELERY_BROKER_URL = 'redis://:foobared@127.0.0.1:6379/0' CELERY_ACCEPT_CONTENT = ['json'] CELERY_RESULT_BACKEND = 'redis://:foobared@127.0.0.1:6379/0' CELERY_TASK_SERIALIZER = 'json'

第三步 　　【项目/项目/celery.py】在项目同名目录创建 celery.py

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#!/usr/bin/env python # -*- coding:utf-8 -*- # 拒绝隐式引入，因为celery.py的名字和celery的包名冲突，需要使用这条语句让程序正确运行 from __future__ import absolute_import import os from celery import Celery   # set the default Django settings module for the 'celery' program.   os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'auction.settings')   app =Celery('auction')   # Using a string here means the worker doesn't have to serialize # the configuration object to child processes. # - namespace='CELERY' means all celery-related configuration keys #   should have a `CELERY_` prefix. app.config_from_object('django.conf:settings',namespace='CELERY')   # Load task modules from all registered Django app configs. # 去每个已注册app中读取 tasks.py 文件 app.autodiscover_tasks()

　第四步【项目/app名称/tasks.py】　

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from celery import shared_task   @shared_task def add(x, y):     return x + y   @shared_task def mul(x, y):     return x * y

第五步 【项目/项目/__init__.py】　

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from .celery import app as celery_app   __all__ = ('celery_app',)

第六步 启动worker

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进入项目目录   celery worker -A s -l info -P eventle

　第七步 编写视图函数，调用celery去创建任务

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from django.shortcuts import HttpResponse from api.tasks import x1   def create_task(request):     print('请求来了')     result = x1.delay(2,2)     print('执行完毕')     return HttpResponse(result.id)     def get_result(request):     nid = request.GET.get('nid')     from celery.result import AsyncResult     # from demos.celery import app     from demos import celery_app     result_object = AsyncResult(id=nid, app=celery_app)     # print(result_object.status)     data = result_object.get()     return HttpResponse(data)

　　第八步 启动django程序

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1 2	http://127.0.0.1:8000/api/get/task/?nid=68d4c97e-92e5-42e4-a04d-c1a8f35fb4a http://127.0.0.1:8000/api/create/task/

　　注意事项：

本地时间和URF实际转换：

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Python3 :     # 本地时间转换成utc时间     utc_ctime = datetime.datetime.utcfromtimestamp(ctime.timestamp())     target_time = utc_ctime + datetime.timedelta(seconds=10)     result = x1.apply_async(args=[11, 3], eta=target_time)       python2 :           # “”“本地时间转UTC时间（-8:00）”“”      time_struct = time.mktime(ctime.timetuple())      utc_st = datetime.datetime.utcfromtimestamp(time_struct)            # utc_ctime = datetime.datetime.utcfromtimestamp(ctime.timestamp())      target_time = utc_st + datetime.timedelta(seconds=30)