django celery

 

基本步骤

安装

install redis
yum install -y http://rpms.famillecollet.com/enterprise/remi-release-7.rpm
yum --enablerepo=remi install redis
service redis start
chkconfig redis on
pip3 install celery
pip3 install celery[redis]

 

启动celery worker 

manage.py文件同级目录

celery  -A dj_test  worker -l info 

项目代码，项目名称 dj_test

代码地址 https://github.com/infaaf/dj_test_ops.git    tag ： v1_withcelery

dj_test/dj_test/celery.py 

#!/usr/bin/env python
# -*- coding=utf-8 -*-
#__author__ = 'infaaf'
# refer  https://github.com/celery/celery/tree/master/examples/django/
from __future__ import absolute_import, unicode_literals
import os
from celery import Celery

# set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'dj_test.settings')    # change proj name here

app = Celery('dj_test')
# app = Celery('dj_test', backend='redis://:pwd@127.0.0.1:6379/0', broker='redis://:pwd@127.0.0.1:6379/0')

# 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()


@app.task(bind=True)
def debug_task(self):
    print('Request: {0!r}'.format(self.request))

dj_test/dj_test/__init__.py

from __future__ import absolute_import, unicode_literals

import pymysql
pymysql.install_as_MySQLdb()

# This will make sure the app is always imported when
# Django starts so that shared_task will use this app.
from .celery import app as celery_app

__all__ = ('celery_app',)

dj_test/dj_test/settings.py

额外增加如下
### celery
CELERY_BROKER_URL = 'redis://:pwd@127.0.0.1:6379/0'
CELERY_ACCEPT_CONTENT = ['json']
CELERY_RESULT_BACKEND = 'redis://:pwd@127.0.0.1:6379/0'
CELERY_TASK_SERIALIZER = 'json'

dj_test/dj_test/app01/tasks.py

#!/usr/bin/env python
# -*- coding=utf-8 -*-
# __author__ = 'infaaf'

from __future__ import absolute_import, unicode_literals
from celery import shared_task


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

dj_test/dj_test/app01/views.py     # 取返回值需要在setting定义 celery_result_backend

from django.shortcuts import render,HttpResponse
from .utils.simple_allinone_ansible_runner import Runner as AnsibleRunner
from .tasks import add

# Create your views here.
import logging
logger=logging.getLogger(__name__)

def index(request):
    r=add.delay(3,4)
    print(r.ready())
    import time
    time.sleep(1)
    print(r.ready())
    print(r.get(timeout=3))
    return HttpResponse('123')

日志信息

django日志

System check identified no issues (0 silenced).
August 26, 2018 - 15:12:18
Django version 2.1, using settings 'dj_test.settings'
Starting development server at http://192.168.188.200:8100/
Quit the server with CONTROL-C.
False   调用瞬间并未完成
20180826 15:12:21 [INFO] basehttp/basehttp.py[line:124] "GET / HTTP/1.1" 200 3
True
7

celery 日志

[2018-08-26 15:12:20,523: INFO/MainProcess] Received task: app01.tasks.add[be1ae35e-d104-4015-a0fa-c4316221611d]  
[2018-08-26 15:12:20,526: INFO/ForkPoolWorker-4] Task app01.tasks.add[be1ae35e-d104-4015-a0fa-c4316221611d] succeeded in 0.0008414150070166215s: 7

redis 存储

127.0.0.1:6379> keys *
 1) "_kombu.binding.celery.pidbox"
 2) "celery-task-meta-8f64c6a8-7b65-42df-b556-819991417aeb"
 3) "a"
 4) "_kombu.binding.celeryev"
 5) "celery-task-meta-5f6d5a5e-8782-4535-bc24-48d109939634"
 6) "celery-task-meta-55e1a767-38a0-4222-b173-f9ff4f4f4e05"
 7) "celery-task-meta-6dcc4017-6287-4f53-9ffc-51cb11073bba"
 8) "celery-task-meta-cd34ade8-5afc-4c6b-814e-3eb65c72d25a"
 9) "celery-task-meta-d8e8c21d-5df2-4141-b8ee-250fd3302301"
10) "celery-task-meta-be1ae35e-d104-4015-a0fa-c4316221611d"
11) "_kombu.binding.celery"
12) "unacked_mutex"
127.0.0.1:6379> 
127.0.0.1:6379> get celery-task-meta-be1ae35e-d104-4015-a0fa-c4316221611d
"{\"status\": \"SUCCESS\", \"result\": 7, \"traceback\": null, \"children\": [], \"task_id\": \"be1ae35e-d104-4015-a0fa-c4316221611d\"}"
127.0.0.1:6379> 

 

celery ansible

celery multi start w1 -A dj_test -l info --logfile=celerylog.log --pidfile=celerypid.pid  

pkill -9 -f 'celery worker'

tasks文件案例

@shared_task()
def ansible_test(host_data,tasks):
    current_process()._config = {'semprefix': '/mp'}
    inventory = BaseInventory(host_data)
    runner = AdHocRunner(inventory)
    ret = runner.run(tasks, "all")
    print(ret.results_summary)
    print(ret.results_raw)
    return 'a'

 

额外选项

结果记录到django db

pip3 install django-celery-results


INSTALLED_APPS = (
    ...,
    'django_celery_results',
)
CELERY_RESULT_BACKEND = 'django-db'
#CELERY_RESULT_BACKEND = 'django-cache'

$ python manage.py migrate django_celery_results