使用 Django 的示例 Cron [英] Example Cron with Django

问题描述

我在互联网上搜索了 Django 中预定作业的工作示例.但我只能找到如何去做，但没有给出例子.有人可以分享一个使用 cron 运行计划任务的 Django 框架的工作示例吗?

I've searched the internet for a working example of a scheduled job in Django. But I can only find how to do it, but no example is given. Can someone share a working example of the Django framework running a scheduled task with cron?

推荐答案

首先创建一个 自定义管理命令.此命令将用于将任务添加到 crontab.这是我的自定义命令的示例:

First of all create a custom admin command. This command will be used to add the task to the crontab. Here is an example of my custom command:

cron.py

from django.core.management.base import BaseCommand, CommandError
import os
from crontab import CronTab

class Command(BaseCommand):
    help = 'Cron testing'

    def add_arguments(self, parser):
        pass

    def handle(self, *args, **options):
        #init cron
        cron = CronTab(user='your_username')

        #add new cron job
        job = cron.new(command='python <path_to>/example.py >>/tmp/out.txt 2>&1')

        #job settings
        job.minute.every(1)

        cron.write()

之后，如果您查看下面的代码，将会每 1 分钟调用一次 Python 脚本.创建一个 example.py 文件，并在其中添加您希望每 1 分钟创建一次的功能.

After that, if you have a look at the code below, a python script is going to be invoked every 1 minute. Create an example.py file and add it there the functionality that you want to be made every 1 minute.

一切准备好添加定时任务，只需从项目django目录调用如下命令即可:

All is prepared to add the scheduled job, just invoke the following command from the project django directory:

python manage.py cron

要验证 cron 作业是否已成功添加，请调用以下命令:

To verify that the cron job was added successfully invoke the following command:

crontab -l

您应该会看到如下内容:

You should see something like this:

* * * * * <path_to>/example.py

要调试example.py，只需调用这个命令:

To debug the example.py, simply invoke this coomand:

tail -f /tmp/out.txt

这篇关于使用 Django 的示例 Cron的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！