text: # -*- coding: utf-8 -*-
  """
  Tencent is pleased to support the open source community by making 蓝鲸智云PaaS平台社区版 (BlueKing PaaS Community Edition) available.
  Copyright (C) 2017-2019 THL A29 Limited, a Tencent company. All rights reserved.
  Licensed under the MIT License (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at
  http://opensource.org/licenses/MIT
  Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
  """ # noqa
  
  from __future__ import unicode_literals
  import datetime
  
  from django.db import connection
  from django.apps import AppConfig
  
  
  class DataMigrationConfig(AppConfig):
      name = 'data_migration'
  
      def ready(self):
          try:
              import djcelery
          except Exception:
              return
  
          # djcelery upgrate compatible
          if djcelery.__version__.split('.')[1] >= 2:
              with connection.cursor() as cursor:
                  cursor.execute('show tables;')
                  tables = {item[0] for item in cursor.fetchall()}
                  is_first_migrate = 'django_migrations' not in tables
                  if is_first_migrate:
                      return
  
                  using_djcelery = 'djcelery_taskstate' in tables
                  if not using_djcelery:
                      return
  
                  # insert djcelery migration record
                  cursor.execute('select * from `django_migrations` where app=\'djcelery\' and name=\'0001_initial\';')
                  row = cursor.fetchall()
                  if not row:
                      cursor.execute('insert into `django_migrations` (app, name, applied) '
                                     'values (\'djcelery\', \'0001_initial\', \'%s\');' %
                                     datetime.datetime.now().strftime('%Y-%m-%d %H:%M:%S'))
  