new_contents: # vim: tabstop=4 shiftwidth=4 softtabstop=4
  #
  # Copyright 2013 OpenStack LLC
  #
  #    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.
  #
  
  """security_groups
  
  Revision ID: 3cb5d900c5de
  Revises: 48b6f43f7471
  Create Date: 2013-01-08 00:13:43.051078
  
  """
  
  # revision identifiers, used by Alembic.
  revision = '3cb5d900c5de'
  down_revision = '48b6f43f7471'
  
  # Change to ['*'] if this migration applies to all plugins
  
  migration_for_plugins = [
      'quantum.plugins.linuxbridge.lb_quantum_plugin.LinuxBridgePluginV2'
  ]
  
  from alembic import op
  import sqlalchemy as sa
  from sqlalchemy.dialects import mysql
  
  from quantum.db import migration
  
  
  def upgrade(active_plugin=None, options=None):
      if not migration.should_run(active_plugin, migration_for_plugins):
          return
  
      ### commands auto generated by Alembic - please adjust! ###
      op.create_table(
          'securitygroups',
          sa.Column('tenant_id', sa.String(length=255), nullable=True),
          sa.Column('id', sa.String(length=36), nullable=False),
          sa.Column('name', sa.String(length=255), nullable=True),
          sa.Column('description', sa.String(length=255), nullable=True),
          sa.Column('external_id', sa.Integer(), nullable=True),
          sa.PrimaryKeyConstraint('id'),
          sa.UniqueConstraint('external_id')
      )
      op.create_table(
          'securitygrouprules',
          sa.Column('tenant_id', sa.String(length=255), nullable=True),
          sa.Column('id', sa.String(length=36), nullable=False),
          sa.Column('external_id', sa.Integer(), nullable=True),
          sa.Column('security_group_id', sa.String(length=36), nullable=False),
          sa.Column('source_group_id', sa.String(length=36), nullable=True),
          sa.Column('direction', sa.Enum('ingress', 'egress'), nullable=True),
          sa.Column('ethertype', sa.String(length=40), nullable=True),
          sa.Column('protocol', sa.String(length=40), nullable=True),
          sa.Column('port_range_min', sa.Integer(), nullable=True),
          sa.Column('port_range_max', sa.Integer(), nullable=True),
          sa.Column('source_ip_prefix', sa.String(length=255), nullable=True),
          sa.ForeignKeyConstraint(['security_group_id'], ['securitygroups.id'],
                                  ondelete='CASCADE'),
          sa.ForeignKeyConstraint(['source_group_id'], ['securitygroups.id'],
                                  ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('id')
      )
      op.create_table(
          'securitygroupportbindings',
          sa.Column('port_id', sa.String(length=36), nullable=False),
          sa.Column('security_group_id', sa.String(length=36), nullable=False),
          sa.ForeignKeyConstraint(['port_id'], ['ports.id'], ondelete='CASCADE'),
          sa.ForeignKeyConstraint(['security_group_id'], ['securitygroups.id']),
          sa.PrimaryKeyConstraint('port_id', 'security_group_id')
      )
      ### end Alembic commands ###
  
  
  def downgrade(active_plugin=None, options=None):
      if not migration.should_run(active_plugin, migration_for_plugins):
          return
  
      ### commands auto generated by Alembic - please adjust! ###
      op.drop_table('securitygroupportbindings')
      op.drop_table('securitygrouprules')
      op.drop_table('securitygroups')
      ### end Alembic commands ###
  
subject: add migration support for lb security groups