text: # Copyright 2015 Huawei Technologies Co.,LTD.
  #
  # Licensed under the Apache License, Version 2.0 (the "License"); you may
  # not use this file except in compliance with the License. You may obtain
  # a copy of the License at
  #
  #      http://www.apache.org/licenses/LICENSE-2.0
  #
  # 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.
  """add master count to bay
  
  Revision ID: 14328d6a57e3
  Revises: 53882537ac57
  Create Date: 2015-07-29 16:00:38.721016
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '14328d6a57e3'
  down_revision = '53882537ac57'
  
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      op.add_column('bay',
                    sa.Column('master_count', sa.Integer(), nullable=True))
  