text: # Copyright 2014 OpenStack Foundation
  #
  #    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.
  #
  
  # Initial operations for core resources
  from alembic import op
  import sqlalchemy as sa
  
  
  def upgrade():
      op.create_table(
          'networks',
          sa.Column('tenant_id', sa.String(length=255), nullable=True,
                    index=True),
          sa.Column('id', sa.String(length=36), nullable=False),
          sa.Column('name', sa.String(length=255), nullable=True),
          sa.Column('status', sa.String(length=16), nullable=True),
          sa.Column('admin_state_up', sa.Boolean(), nullable=True),
          sa.Column('shared', sa.Boolean(), nullable=True),
          sa.Column('mtu', sa.Integer(), nullable=True),
          sa.Column('vlan_transparent', sa.Boolean(), nullable=True),
          sa.PrimaryKeyConstraint('id'))
  
      op.create_table(
          'ports',
          sa.Column('tenant_id', sa.String(length=255), nullable=True,
                    index=True),
          sa.Column('id', sa.String(length=36), nullable=False),
          sa.Column('name', sa.String(length=255), nullable=True),
          sa.Column('network_id', sa.String(length=36), nullable=False),
          sa.Column('mac_address', sa.String(length=32), nullable=False),
          sa.Column('admin_state_up', sa.Boolean(), nullable=False),
          sa.Column('status', sa.String(length=16), nullable=False),
          sa.Column('device_id', sa.String(length=255), nullable=False),
          sa.Column('device_owner', sa.String(length=255), nullable=False),
          sa.ForeignKeyConstraint(['network_id'], ['networks.id']),
          sa.UniqueConstraint('network_id', 'mac_address',
                              name='uniq_ports0network_id0mac_address'),
          sa.PrimaryKeyConstraint('id'),
          sa.Index(op.f('ix_ports_network_id_device_owner'), 'network_id',
                   'device_owner'),
          sa.Index(op.f('ix_ports_network_id_mac_address'), 'network_id',
                   'mac_address'))
  
      op.create_table(
          'subnets',
          sa.Column('tenant_id', sa.String(length=255), nullable=True,
                    index=True),
          sa.Column('id', sa.String(length=36), nullable=False),
          sa.Column('name', sa.String(length=255), nullable=True),
          sa.Column('network_id', sa.String(length=36), nullable=True),
          sa.Column('ip_version', sa.Integer(), nullable=False),
          sa.Column('cidr', sa.String(length=64), nullable=False),
          sa.Column('gateway_ip', sa.String(length=64), nullable=True),
          sa.Column('enable_dhcp', sa.Boolean(), nullable=True),
          sa.Column('shared', sa.Boolean(), nullable=True),
          sa.Column('ipv6_ra_mode',
                    sa.Enum('slaac', 'dhcpv6-stateful', 'dhcpv6-stateless',
                            name='ipv6_ra_modes'),
                    nullable=True),
          sa.Column('ipv6_address_mode',
                    sa.Enum('slaac', 'dhcpv6-stateful', 'dhcpv6-stateless',
                            name='ipv6_address_modes'),
                    nullable=True),
          sa.Column('subnetpool_id', sa.String(length=36), nullable=True,
                    index=True),
          sa.ForeignKeyConstraint(['network_id'], ['networks.id'], ),
          sa.PrimaryKeyConstraint('id'))
  
      op.create_table(
          'dnsnameservers',
          sa.Column('address', sa.String(length=128), nullable=False),
          sa.Column('subnet_id', sa.String(length=36), nullable=False),
          sa.ForeignKeyConstraint(['subnet_id'], ['subnets.id'],
                                  ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('address', 'subnet_id'))
  
      op.create_table(
          'ipallocationpools',
          sa.Column('id', sa.String(length=36), nullable=False),
          sa.Column('subnet_id', sa.String(length=36), nullable=True),
          sa.Column('first_ip', sa.String(length=64), nullable=False),
          sa.Column('last_ip', sa.String(length=64), nullable=False),
          sa.ForeignKeyConstraint(['subnet_id'], ['subnets.id'],
                                  ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('id'))
  
      op.create_table(
          'subnetroutes',
          sa.Column('destination', sa.String(length=64), nullable=False),
          sa.Column('nexthop', sa.String(length=64), nullable=False),
          sa.Column('subnet_id', sa.String(length=36), nullable=False),
          sa.ForeignKeyConstraint(['subnet_id'], ['subnets.id'],
                                  ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('destination', 'nexthop', 'subnet_id'))
  
      op.create_table(
          'ipallocations',
          sa.Column('port_id', sa.String(length=36), nullable=True),
          sa.Column('ip_address', sa.String(length=64), nullable=False),
          sa.Column('subnet_id', sa.String(length=36), nullable=False),
          sa.Column('network_id', sa.String(length=36), nullable=False),
          sa.ForeignKeyConstraint(['network_id'], ['networks.id'],
                                  ondelete='CASCADE'),
          sa.ForeignKeyConstraint(['port_id'], ['ports.id'], ondelete='CASCADE'),
          sa.ForeignKeyConstraint(['subnet_id'], ['subnets.id'],
                                  ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('ip_address', 'subnet_id', 'network_id'))
  
      op.create_table(
          'ipavailabilityranges',
          sa.Column('allocation_pool_id', sa.String(length=36), nullable=False),
          sa.Column('first_ip', sa.String(length=64), nullable=False),
          sa.Column('last_ip', sa.String(length=64), nullable=False),
          sa.ForeignKeyConstraint(['allocation_pool_id'],
                                  ['ipallocationpools.id'], ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('allocation_pool_id', 'first_ip', 'last_ip'),
          sa.UniqueConstraint(
              'first_ip', 'allocation_pool_id',
              name='uniq_ipavailabilityranges0first_ip0allocation_pool_id'),
          sa.UniqueConstraint(
              'last_ip', 'allocation_pool_id',
              name='uniq_ipavailabilityranges0last_ip0allocation_pool_id'))
  
      op.create_table(
          'networkdhcpagentbindings',
          sa.Column('network_id', sa.String(length=36), nullable=False),
          sa.Column('dhcp_agent_id', sa.String(length=36), nullable=False),
          sa.ForeignKeyConstraint(['dhcp_agent_id'], ['agents.id'],
                                  ondelete='CASCADE'),
          sa.ForeignKeyConstraint(['network_id'], ['networks.id'],
                                  ondelete='CASCADE'),
          sa.PrimaryKeyConstraint('network_id', 'dhcp_agent_id'))
  