"Python" Django2.0 integrated Celery4.1 detailed

Environment preparation

• Python3.6
• Pip Install django==2.0.1
• Pip Install celery==4.1.0
• Pip Install Eventlet (join the co-process support)
• Installing Erlang and Rabbitmq-server

Configuring the settings.py File

• In the settings.py file, add the following:

...LANGUAGE_CODE = ‘zh-hans‘TIME_ZONE = ‘Asia/Shanghai‘USE_I18N = TrueUSE_L10N = TrueUSE_TZ = FalseCELERY_BROKER_URL = ‘amqp://guest:[email protected]:5672‘

Create celery.py in settings.py sibling directory

• celery.py
• Note replacement: Project_Name

# -*- coding: utf-8 -*-from __future__ import absolute_import, unicode_literalsimport osfrom celery import Celery# 设置环境变量os.environ.setdefault(‘DJANGO_SETTINGS_MODULE‘, ‘project_name.settings‘)# 注册Celery的APPapp = Celery(‘project_name‘)# 绑定配置文件app.config_from_object(‘django.conf:settings‘, namespace=‘CELERY‘)# 自动发现各个app下的tasks.py文件app.autodiscover_tasks()

Modify the init.py file for the settings.py sibling directory

from __future__ import absolute_import, unicode_literalsfrom .celery import app as celery_app__all__ = [‘celery_app‘]

Create a tasks.py file in an app

• tasks.py

# -*- coding: utf-8 -*-from celery.task import task# 自定义要执行的task任务@taskdef print_hello(): return ‘hello celery and django...‘

Configure recurring tasks or Scheduled tasks

• Edit the settings.py file again to add the following:
• Configuration format for timed tasks reference: http://docs.celeryproject.org/en/latest/userguide/periodic-tasks.html

from celery.schedules import crontabCELERY_BEAT_SCHEDULE = { # 周期性任务 ‘task-one‘: { ‘task‘: ‘app.tasks.print_hello‘, ‘schedule‘: 5.0, # 每5秒执行一次 # ‘args‘: () }, # 定时任务 ‘task-two‘: { ‘task‘: ‘app.tasks.print_hello‘, ‘schedule‘: crontab(minute=0, hour=‘*/3,10-19‘), # ‘args‘: () }}

Start worker and Scheduled tasks

• Start worker (switch to manage.py sibling directory execution)

-A project_name worker -l info -P eventlet

• Start a scheduled task or recurring task

-A project_name beat -l info

• Background to start a scheduled task or recurring task

Celery Multi start w1-a fushentang-l info-p Eventlet

The extension that holds the result of the task

• pip install django-celery-results
• Install APP

INSTALLED_APPS = (    ...,    ‘django_celery_results‘,)

• To generate a database table:python manage.py migrate django_celery_results
• Configuration settings: CELERY_RESULT_BACKEND = ‘django-db‘ (use database to hold task execution result information)

"Python" Django2.0 integrated Celery4.1 detailed