celery

Celery定时任务

送分小仙女□ 提交于 2019-12-06 20:39:44
目录树 celery_app | | - - __init__ . py # celery应用文件 | | - - celeryconfig . py # celery应用配置文件 | | - - task1 . py # 任务文件1 | | - - task2 . py # 任务文件2 文件内容 __init__.py 文件内容如下: from celery import Celery app = Celery ( 'demo' ) # 通过celery实例加载配置模块 app . config_from_object ( 'celery_app.celeryconfig' ) celeryconfig.py 文件内容如下: from datetime import timedelta from celery . schedules import crontab BROKER_URL = 'redis://localhost:6379/1' CELERY_RESULT_BACKEND = 'redis://localhost:6379/2' # 是否丢弃运行结果(丢弃结果会提升效率) # CELERY_IGNORE_RESULT = True # 指定时区, 默认是UTC时间,由于ceery对时区支持不是很好,所以我选择不指定 # CELERY_TIMEZONE = 'Asia

celery定时任务踩坑

自作多情 提交于 2019-12-06 20:39:08
新添加定时任务之后,需要重启一下celery的beat, 新增的任务才能生效。目前celery没有提供flask可以动态添加定时任务的接口 celery 添加定时任务有2中途径,一种是在项目的配置文件中,一种是在模块的task.py文件中。这两种方式都需要显示的添加定时任务。如果想用信号触发自动添加定时任务,定时任务添加不成功 task.py def get_tasks(): task_infos = [] tasks = db.session.query(PeriodTask).all() for item in tasks: interval = item.interval.split() scheduler = crontab(minute=interval[0], hour=interval[1], day_of_month=interval[2], month_of_year=interval[3], day_of_week=interval[4]) task_infos.append((scheduler, item.id)) return task_infos tasks_info = get_tasks() for key, value in tasks_info: celery_app.add_periodic_task(key, generate_task.s

Celery实现定时任务crontab

拜拜、爱过 提交于 2019-12-06 20:38:31
Celery实现定时任务crontab 一. 搭建celery定时任务架构 在项目中适合的位置新建一个定时任务目录celery_crontab, 在目录下创建config.py , main.py ,tasks.py三个文件,分别用于编写配置代码,定时任务实现代码,任务函数代码 # 目录结构 - celery_crontab - config . py - main . py - tasks . py 二. 编写代码实现定时任务 在config.py中编写配置代码 from celery import Celery # broker,rabbitmq app = Celery ( 'celery_crontab' , broker = 'amqp://guest@localhost//' ) # app = Celery('demo', broker='redis://127.0.0.1:6379/15') 在tasks.py中编写任务函数代码 from config import app @app . task def crontab_func1 ( ) : print ( '在此编写任务要实现的代码' ) @app . task def crontab_func2 ( ) : print ( '在此调用实现了定时任务功能的函数或方法' ) 在main.py中调用任务

django配置celery执行异步任务和定时任务

左心房为你撑大大i 提交于 2019-12-06 20:38:17
需求:django中定时给用户推送消息、或者定时更新数据库的某个字段内容 本文介绍如何在django中使用celery和定时任务,以及配置celery日志文件 一、安装 pip install django-celery pip install django-redis pip install celery pip install redis django-crontab 定时任务 安装完成 注意版本之间的兼容性 ,之前就踩过很多坑,运行时发现报错,就是因为版本之间不兼容导致,本例中使用的版本: 二、文件结构 我的项目名称叫hrms,首先在项目根目录下新建celery_tasks包,作为celery服务的根目录。 config.py是celery的配置文件; main.py是celery服务启动的入口文件; mail包是发邮件的任务目录 sms包是发短信的任务目录 update_hruser包是定时更新简历的任务目录 三、config.py文件 from celery.schedules import crontab import logging.config 指定任务队列的位置 BROKER_URL = "redis://127.0.0.1/0" 指定消息执行结果的位置 CELERY_RESULT_BACKEND = "redis://127.0.0.1/0" 一定要写下面这句

Django配置celery执行异步任务和定时任务

好久不见. 提交于 2019-12-06 20:38:01
非常棒的一篇文章,写的非常详细,照着能做下来,原文地址: Django配置Celery执行异步任务和定时任务 相关延伸文章: Django model select的各种用法详解 Django model update的各种用法介绍 Django model转字典的几种方法 Django使用Signals监测model字段变化发送通知 Django+Echarts画图实例 Django开发密码管理表实例【附源码】 Django+JWT实现Token认证 Django集成Markdown编辑器【附源码】 Django内置权限扩展案例 来源: CSDN 作者: 运维咖啡吧 链接: https://blog.csdn.net/weixin_42578481/article/details/81047030

Correct setup of django redis celery and celery beats

巧了我就是萌 提交于 2019-12-06 20:15:54
问题 I have being trying to setup django + celery + redis + celery_beats but it is giving me trouble. The documentation is quite straightforward, but when I run the django server, redis, celery and celery beats, nothing gets printed or logged (all my test task does its log something). This is my folder structure: - aenima - aenima - __init__.py - celery.py - criptoball - tasks.py celery.py looks like this: from __future__ import absolute_import, unicode_literals import os from django.conf import

celeryev Queue in RabbitMQ Becomes Very Large

房东的猫 提交于 2019-12-06 17:52:50
问题 I am using celery on rabbitmq. I have been sending thousands of messages to the queue and they are being processed successfully and everything is working just fine. However, the number of messages in several rabbitmq queues are growing quite large (hundreds of thousands of items in the queue). The queues are named celeryev.[...] (see screenshot below). Is this appropriate behavior? What is the purpose of these queues and shouldn't they be regularly purged? Is there a way to purge them more

【python小随笔】celery周期任务(简单原理)

…衆ロ難τιáo~ 提交于 2019-12-06 16:21:59
1:目录结构 |--celery_task |--celery.py # 执行任务的main函数 |--task_one # 第一个任务 |--task_two # 第2个任务 . . . . |--task_. # 第n个任务 2:celery.py from celery import Celery # 导入celery模块 from celery.schedules import crontab # 周期定义工具包 # 配置任务 celery_task = Celery( "task", broker="redis://127.0.0.1:6379", backend="redis://127.0.0.1:6379", include=["Celery_task.task_one",] # 任务文件夹名称.任务文件,多个往后面添加 ) # crontab(minute='*/720') # 12小时执行一次 # "schedule": 10, # 每10秒钟执行一次 # 周期时间定义 celery_task.conf.beat_schedule = { "each1d_task": { "task": "Celery_task.task_keyword.monitored_ranking", # 要执行的函数名 "schedule": crontab(minute='*

Where is the data provided by django-celery urls stored? How long is the data available? And what is the memory consumption?

跟風遠走 提交于 2019-12-06 16:04:46
问题 I am starting a project using django celery and I am making ajax calls to the task urls provided by 'djcelery.urls'. I would like to know a few things about this data: Where is that information being stored? Is it called from the djcelery tables in my django projects database or is it kept on the RabbitMQ server? My understanding of the djcelery tables in my database is that they are only for monitoring the usage using the camera. If it is being stored on the RabbitMQ server, how long will

Tornado IOLoop Exception in callback None in Celery worker

空扰寡人 提交于 2019-12-06 15:30:58
I am using tornado.ioloop inside celery worker because I need to use mongodb. class WorkerBase(): @gen.engine def foo(self,args,callback) bar = ['Python','Celery','Javascript','HTML'] # ... process something .... callback(bar) @gen.engine def RunMyTask(self,args): result = yield gen.Task(self.foo,args=args) # Stop IOLoop instance IOLoop.instance().stop() @task(name="MyWorker",base=WorkerBase) def CeleryWorker(args): # This works because i'm adding base as WorkerBase CeleryWorker.RunMyTask(args) IOLoop.instance().start() return True When I am invoking a task it gives an error saying: [2014-10