python - 第一个带有 Celery 的 Django cron

问题描述

我阅读了很多关于Celerywith的文档，Django并尝试创建我的第一个cron task.

客观的：

此任务应该能够执行每天上午 11:30 清理特定表的功能

我的代码：

一切似乎都很好，我在 Celery 中看到了任务，但没有任何改变。

我的base.py文件中有：

INSTALLED_APPS = (
    ....
    'django_cron',
)

CRON_CLASSES = [
    "app.cron.cron.DeleteOldToken",
]

CELERY_BROKER_URL = 'redis://localhost:6379'
CELERY_ACCEPT_CONTENT = ['application/json']
CELERY_RESULT_BACKEND = 'redis://localhost:6379'
CELERY_TASK_SERIALIZER = 'json'
CELERY_RESULT_SERIALIZER = 'json'
CELERY_IGNORE_RESULT = False
CELERY_TASK_TRACK_STARTED = True
# Add a one-minute timeout to all Celery tasks.
CELERYD_TASK_SOFT_TIME_LIMIT = 60

我有一个celery.py文件：

import os
from celery import Celery

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'main.settings.base')

app = Celery('main')
app.config_from_object('django.conf:settings', namespace='CELERY')

# Load task modules from all registered Django app configs.
app.autodiscover_tasks()

我有一个cron.py文件：

# -*- coding: utf-8 -*-
from django_cron import CronJobBase, Schedule

from ..tasks import delete_old_token

class DeleteOldToken(CronJobBase):
    RUN_AT_TIMES = ['11:30']

    schedule = Schedule(run_at_times=RUN_AT_TIMES)
    code = 'app.delete_old_token'

    def do(self):
        delete_old_token()

和文件tasks.py：

# -*- coding: utf-8 -*-
import datetime
from datetime import datetime

from celery import shared_task, task
from dateutil.relativedelta import relativedelta
from django.conf import settings
from token_jwt.models import UserToken

@task()
def delete_old_token(self):
    for token in UserToken.objects.exclude(date_information__isnull=True):
        tdi = token.date_information
        if datetime(tdi.year, tdi.month, tdi.day) < datetime.now() + relativedelta(months=2):
            token.delete()

命令：

然后我尝试启动这个命令：

celery -A main worker --loglevel=info

它显示：

 -------------- celery@pydev-jungbluth v4.2.1 (windowlicker)
---- **** ----- 
--- * ***  * -- Linux-4.15.0-45-generic-x86_64-with-debian-buster-sid 2019-02-08 11:29:10
-- * - **** --- 
- ** ---------- [config]
- ** ---------- .> app:         main:0x7fd4befe5cf8
- ** ---------- .> transport:   redis://localhost:6379//
- ** ---------- .> results:     redis://localhost:6379/
- *** --- * --- .> concurrency: 4 (prefork)
-- ******* ---- .> task events: OFF (enable -E to monitor tasks in this worker)
--- ***** ----- 
 -------------- [queues]
                .> celery           exchange=celery(direct) key=celery


[tasks]
  . app.tasks.delete_old_token

[2019-02-08 11:29:10,889: INFO/MainProcess] Connected to redis://localhost:6379//
[2019-02-08 11:29:10,894: INFO/MainProcess] mingle: searching for neighbors
[2019-02-08 11:29:11,914: INFO/MainProcess] mingle: all alone
[2019-02-08 11:29:11,920: INFO/MainProcess] celery@pydev-jungbluth ready.

但什么也没有出现。看来我的 cron 任务不起作用或没有执行。

你有什么主意吗？

编辑：

芹菜节拍给了我：

$ celery -A main beat
celery beat v4.2.1 (windowlicker) is starting.
__    -    ... __   -        _
LocalTime -> 2019-02-08 12:03:22
Configuration ->
    . broker -> redis://localhost:6379//
    . loader -> celery.loaders.app.AppLoader
    . scheduler -> celery.beat.PersistentScheduler
    . db -> celerybeat-schedule
    . logfile -> [stderr]@%WARNING
    . maxinterval -> 5.00 minutes (300s)

标签： pythondjangocroncelerydjango-celery

python - 第一个带有 Celery 的 Django cron

问题描述

解决方案

推荐阅读