django使用celery

一、基本使用

django_celery_demo
├── app01
│   ├── __init__.py
│   ├── admin.py
│   ├── apps.py
│   ├── migrations
│   ├── models.py
│   ├── tasks.py
│   ├── tests.py
│   └── views.py
├── db.sqlite3
├── django_celery_demo
│   ├── __init__.py
│   ├── celery.py
│   ├── settings.py
│   ├── urls.py
│   └── wsgi.py
├── manage.py
├── red.py
└── templates

import os
from celery import Celery

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'django_celery_demo.settings')

app = Celery('django_celery_demo')

# 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.
app.autodiscover_tasks()

django_celery_demo/celery.py

from .celery import app as celery_app

__all__ = ('celery_app',)

django_celery_demo/__init__.py

from celery import shared_task


@shared_task
def add(x, y):
    return x + y


@shared_task
def mul(x, y):
    return x * y


@shared_task
def xsum(numbers):
    return sum(numbers)

app01/tasks.py

# ######################## Celery配置 ########################
CELERY_BROKER_URL = 'redis://10.211.55.20:6379'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_RESULT_BACKEND = 'redis://10.211.55.20:6379'
CELERY_TASK_SERIALIZER = 'json'

django_celery_demo/settings.py

from django.shortcuts import render, HttpResponse
from app01 import tasks
from django_celery_demo import celery_app
from celery.result import AsyncResult


def index(request):
    result = tasks.add.delay(1, 8)
    print(result)
    return HttpResponse('...')


def check(request):
    task_id = request.GET.get('task')
    async = AsyncResult(id=task_id, app=celery_app)
    if async.successful():
        data = async.get()
        print('成功', data)
    else:
        print('任务等待中被执行')

    return HttpResponse('...')

app01/views.py

from django.conf.urls import url
from django.contrib import admin
from app01 import views

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^index/', views.index),
    url(r'^check/', views.check),
]

django_celery_demo/urls.py

定时任务就是在view里面用

def index(request):
    # result = tasks.add.delay(1, 8)

    ctime = datetime.datetime.now()
    utc_ctime = datetime.datetime.utcfromtimestamp(ctime.timestamp())

    s10 = datetime.timedelta(seconds=10)
    ctime_x = utc_ctime + s10

    # 使用apply_async并设定时间
    result = tasks.add.apply_async(args=[1, 3], eta=ctime_x)
    print(result)
    return HttpResponse('...')

参考https://www.cnblogs.com/wupeiqi/articles/8796552.html

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