Django Backup Core

djangoBackup

from django.apps import apps
from django.utils.timezone import now
from django.conf import settings
from os import mkdir
import subprocess
import shutil

outputBase = '/path/to/local/working/folder'



def backupModel(target, time):
    subprocess.check_call(['python',
                           'manage.py',
                           'dumpdata',
                           '--natural-foreign',
                           '--natural-primary',
                           target,
                           '--indent',
                           '4',
                           '--output',
                           '{}{}/{}_{}.json'.format(outputBase,
                                                    time.strftime("%Y%m%d_%H%m"),
                                                    target,
                                                    time.strftime("%Y%m%d_%H%m")),
                           ])


def tarFolder(target, filename):
    subprocess.check_call(['tar', '-zcf', filename, target, ])


def fullBackup():

    blacklist = ['django_celery_beat',
                 'fullcalendar']

    b = now()

    mkdir('{}{}'.format(outputBase,
                        b.strftime("%Y%m%d_%H%m")))

    tarFileName = '{}{}_dbBackup.tar.gz'.format(outputBase,
                                                b.strftime("%Y%m%d_%H%m"))

    for app in settings.INSTALLED_APPS:
        if app not in blacklist:
            for k in apps.all_models[app]:
                print("{}, {}".format(app, k))
                backupModel(target = '{}.{}'.format(app, k),
                            time   = b)

    backupModel(target = 'auth',
                time   = b
                )

    backupModel(target = 'authtoken',
                time   = b
                )

    backupModel(target='contenttypes', time=b)

    try:
        shutil.copytree(settings.MEDIA_ROOT,
                        '{}{}/media/'.format(outputBase,
                                             b.strftime("%Y%m%d_%H%m")),
                        ignore = shutil.ignore_patterns('*.tgz.gpg')
                        )

        tarFolder(target= '{}{}/'.format(outputBase,
                                         b.strftime("%Y%m%d_%H%m")),
                  filename= tarFileName)

        shutil.rmtree('{}{}'.format(outputBase,
                                    b.strftime("%Y%m%d_%H%m")
                                    )
                      )
    except Exception as e:
        print(e)

runFullBackup.py

from toolLocker.tasks.djangoBackup import fullBackup
from django.core.management.base import BaseCommand


class Command(BaseCommand):
    help = 'Starts Full Backup Process'

    def add_arguments(self, parser):
        pass

    def handle(self, *args, **kwargs):

        fullBackup()

        print('### Backup Complete ###')

Q: Why did you choose to drop to a shell instead of running call_command?