# Copyright 2012 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.

from migrate.changeset import UniqueConstraint
from migrate import ForeignKeyConstraint
from oslo_log import log as logging
from sqlalchemy import Boolean, BigInteger, Column, DateTime, Enum, Float
from sqlalchemy import dialects
from sqlalchemy import ForeignKey, Index, Integer, MetaData, String, Table
from sqlalchemy import Text
from sqlalchemy.types import NullType

from nova.i18n import _LE

LOG = logging.getLogger(__name__)


# Note on the autoincrement flag: this is defaulted for primary key columns
# of integral type, so is no longer set explicitly in such cases.

# NOTE(dprince): This wrapper allows us to easily match the Folsom MySQL
# Schema. In Folsom we created tables as latin1 and converted them to utf8
# later. This conversion causes some of the Text columns on MySQL to get
# created as mediumtext instead of just text.
def MediumText():
    return Text().with_variant(dialects.mysql.MEDIUMTEXT(), 'mysql')


def Inet():
    return String(length=43).with_variant(dialects.postgresql.INET(),
                  'postgresql')


def InetSmall():
    return String(length=39).with_variant(dialects.postgresql.INET(),
                  'postgresql')


def _create_shadow_tables(migrate_engine):
    meta = MetaData(migrate_engine)
    meta.reflect(migrate_engine)
    table_names = meta.tables.keys()

    meta.bind = migrate_engine

    for table_name in table_names:
        table = Table(table_name, meta, autoload=True)

        columns = []
        for column in table.columns:
            column_copy = None
            # NOTE(boris-42): BigInteger is not supported by sqlite, so
            #                 after copy it will have NullType, other
            #                 types that are used in Nova are supported by
            #                 sqlite.
            if isinstance(column.type, NullType):
                column_copy = Column(column.name, BigInteger(), default=0)
            if table_name == 'instances' and column.name == 'locked_by':
                enum = Enum('owner', 'admin',
                            name='shadow_instances0locked_by')
                column_copy = Column(column.name, enum)
            else:
                column_copy = column.copy()
            columns.append(column_copy)

        shadow_table_name = 'shadow_' + table_name
        shadow_table = Table(shadow_table_name, meta, *columns,
                             mysql_engine='InnoDB')
        try:
            shadow_table.create()
        except Exception:
            LOG.info(repr(shadow_table))
            LOG.exception(_LE('Exception while creating table.'))
            raise


def _populate_instance_types(instance_types_table):
    default_inst_types = {
        'm1.tiny': dict(mem=512, vcpus=1, root_gb=1, eph_gb=0, flavid=1),
        'm1.small': dict(mem=2048, vcpus=1, root_gb=20, eph_gb=0, flavid=2),
        'm1.medium': dict(mem=4096, vcpus=2, root_gb=40, eph_gb=0, flavid=3),
        'm1.large': dict(mem=8192, vcpus=4, root_gb=80, eph_gb=0, flavid=4),
        'm1.xlarge': dict(mem=16384, vcpus=8, root_gb=160, eph_gb=0, flavid=5)
        }

    try:
        i = instance_types_table.insert()
        for name, values in default_inst_types.iteritems():
            i.execute({'name': name, 'memory_mb': values["mem"],
                        'vcpus': values["vcpus"], 'deleted': 0,
                        'root_gb': values["root_gb"],
                        'ephemeral_gb': values["eph_gb"],
                        'rxtx_factor': 1,
                        'swap': 0,
                        'flavorid': values["flavid"],
                        'disabled': False,
                        'is_public': True})
    except Exception:
        LOG.info(repr(instance_types_table))
        LOG.exception(_LE('Exception while seeding instance_types table'))
        raise


# NOTE(dprince): we add these here so our schema contains dump tables
# which were added in migration 209 (in Havana). We can drop these in
# Icehouse: https://bugs.launchpad.net/nova/+bug/1266538
def _create_dump_tables(migrate_engine):
    meta = MetaData(migrate_engine)
    meta.reflect(migrate_engine)

    table_names = ['compute_node_stats', 'compute_nodes', 'instance_actions',
                   'instance_actions_events', 'instance_faults', 'migrations']
    for table_name in table_names:
        table = Table(table_name, meta, autoload=True)

        dump_table_name = 'dump_' + table.name
        columns = []
        for column in table.columns:
            # NOTE(dprince): The dump_ tables were originally created from an
            # earlier schema version so we don't want to add the pci_stats
            # column so that schema diffs are exactly the same.
            if column.name == 'pci_stats':
                continue
            else:
                columns.append(column.copy())
        table_dump = Table(dump_table_name, meta, *columns,
                           mysql_engine='InnoDB')
        table_dump.create()


def upgrade(migrate_engine):
    meta = MetaData()
    meta.bind = migrate_engine

    agent_builds = Table('agent_builds', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('hypervisor', String(length=255)),
        Column('os', String(length=255)),
        Column('architecture', String(length=255)),
        Column('version', String(length=255)),
        Column('url', String(length=255)),
        Column('md5hash', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    aggregate_hosts = Table('aggregate_hosts', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('host', String(length=255)),
        Column('aggregate_id', Integer, ForeignKey('aggregates.id'),
              nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    aggregate_metadata = Table('aggregate_metadata', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('aggregate_id', Integer, ForeignKey('aggregates.id'),
              nullable=False),
        Column('key', String(length=255), nullable=False),
        Column('value', String(length=255), nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    aggregates = Table('aggregates', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('name', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    block_device_mapping = Table('block_device_mapping', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('device_name', String(length=255), nullable=True),
        Column('delete_on_termination', Boolean),
        Column('snapshot_id', String(length=36), nullable=True),
        Column('volume_id', String(length=36), nullable=True),
        Column('volume_size', Integer),
        Column('no_device', Boolean),
        Column('connection_info', MediumText()),
        Column('instance_uuid', String(length=36)),
        Column('deleted', Integer),
        Column('source_type', String(length=255), nullable=True),
        Column('destination_type', String(length=255), nullable=True),
        Column('guest_format', String(length=255), nullable=True),
        Column('device_type', String(length=255), nullable=True),
        Column('disk_bus', String(length=255), nullable=True),
        Column('boot_index', Integer),
        Column('image_id', String(length=36), nullable=True),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    bw_usage_cache = Table('bw_usage_cache', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('start_period', DateTime, nullable=False),
        Column('last_refreshed', DateTime),
        Column('bw_in', BigInteger),
        Column('bw_out', BigInteger),
        Column('mac', String(length=255)),
        Column('uuid', String(length=36)),
        Column('last_ctr_in', BigInteger()),
        Column('last_ctr_out', BigInteger()),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    cells = Table('cells', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('api_url', String(length=255)),
        Column('weight_offset', Float),
        Column('weight_scale', Float),
        Column('name', String(length=255)),
        Column('is_parent', Boolean),
        Column('deleted', Integer),
        Column('transport_url', String(length=255), nullable=False),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    certificates = Table('certificates', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('file_name', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    compute_node_stats = Table('compute_node_stats', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('compute_node_id', Integer, nullable=False),
        Column('key', String(length=255), nullable=False),
        Column('value', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    compute_nodes = Table('compute_nodes', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('service_id', Integer, nullable=False),
        Column('vcpus', Integer, nullable=False),
        Column('memory_mb', Integer, nullable=False),
        Column('local_gb', Integer, nullable=False),
        Column('vcpus_used', Integer, nullable=False),
        Column('memory_mb_used', Integer, nullable=False),
        Column('local_gb_used', Integer, nullable=False),
        Column('hypervisor_type', MediumText(), nullable=False),
        Column('hypervisor_version', Integer, nullable=False),
        Column('cpu_info', MediumText(), nullable=False),
        Column('disk_available_least', Integer),
        Column('free_ram_mb', Integer),
        Column('free_disk_gb', Integer),
        Column('current_workload', Integer),
        Column('running_vms', Integer),
        Column('hypervisor_hostname', String(length=255)),
        Column('deleted', Integer),
        Column('host_ip', InetSmall()),
        Column('supported_instances', Text),
        Column('pci_stats', Text, nullable=True),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    console_pools = Table('console_pools', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('address', InetSmall()),
        Column('username', String(length=255)),
        Column('password', String(length=255)),
        Column('console_type', String(length=255)),
        Column('public_hostname', String(length=255)),
        Column('host', String(length=255)),
        Column('compute_host', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    consoles = Table('consoles', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('instance_name', String(length=255)),
        Column('password', String(length=255)),
        Column('port', Integer),
        Column('pool_id', Integer, ForeignKey('console_pools.id')),
        Column('instance_uuid', String(length=36),
               ForeignKey('instances.uuid',
                          name='consoles_instance_uuid_fkey')),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    dns_domains = Table('dns_domains', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('deleted', Boolean),
        Column('domain', String(length=255), primary_key=True, nullable=False),
        Column('scope', String(length=255)),
        Column('availability_zone', String(length=255)),
        Column('project_id', String(length=255)),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    fixed_ips = Table('fixed_ips', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('address', InetSmall()),
        Column('network_id', Integer),
        Column('allocated', Boolean),
        Column('leased', Boolean),
        Column('reserved', Boolean),
        Column('virtual_interface_id', Integer),
        Column('host', String(length=255)),
        Column('instance_uuid', String(length=36)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    floating_ips = Table('floating_ips', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('address', InetSmall()),
        Column('fixed_ip_id', Integer),
        Column('project_id', String(length=255)),
        Column('host', String(length=255)),
        Column('auto_assigned', Boolean),
        Column('pool', String(length=255)),
        Column('interface', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_faults = Table('instance_faults', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('instance_uuid', String(length=36)),
        Column('code', Integer, nullable=False),
        Column('message', String(length=255)),
        Column('details', MediumText()),
        Column('host', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_id_mappings = Table('instance_id_mappings', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('uuid', String(36), nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_info_caches = Table('instance_info_caches', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('network_info', MediumText()),
        Column('instance_uuid', String(length=36), nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    groups = Table('instance_groups', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('deleted', Integer),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('uuid', String(length=36), nullable=False),
        Column('name', String(length=255)),
        UniqueConstraint('uuid', 'deleted',
                         name='uniq_instance_groups0uuid0deleted'),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    group_metadata = Table('instance_group_metadata', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('deleted', Integer),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('key', String(length=255)),
        Column('value', String(length=255)),
        Column('group_id', Integer, ForeignKey('instance_groups.id'),
               nullable=False),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    group_policy = Table('instance_group_policy', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('deleted', Integer),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('policy', String(length=255)),
        Column('group_id', Integer, ForeignKey('instance_groups.id'),
               nullable=False),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    group_member = Table('instance_group_member', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('deleted', Integer),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('instance_id', String(length=255)),
        Column('group_id', Integer, ForeignKey('instance_groups.id'),
               nullable=False),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    instance_metadata = Table('instance_metadata', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('key', String(length=255)),
        Column('value', String(length=255)),
        Column('instance_uuid', String(length=36), nullable=True),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_system_metadata = Table('instance_system_metadata', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('instance_uuid', String(length=36), nullable=False),
        Column('key', String(length=255), nullable=False),
        Column('value', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_type_extra_specs = Table('instance_type_extra_specs', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('instance_type_id', Integer, ForeignKey('instance_types.id'),
               nullable=False),
        Column('key', String(length=255)),
        Column('value', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_type_projects = Table('instance_type_projects', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('instance_type_id', Integer, nullable=False),
        Column('project_id', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_types = Table('instance_types', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('name', String(length=255)),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('memory_mb', Integer, nullable=False),
        Column('vcpus', Integer, nullable=False),
        Column('swap', Integer, nullable=False),
        Column('vcpu_weight', Integer),
        Column('flavorid', String(length=255)),
        Column('rxtx_factor', Float),
        Column('root_gb', Integer),
        Column('ephemeral_gb', Integer),
        Column('disabled', Boolean),
        Column('is_public', Boolean),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    inst_lock_enum = Enum('owner', 'admin', name='instances0locked_by')
    instances = Table('instances', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('internal_id', Integer),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('image_ref', String(length=255)),
        Column('kernel_id', String(length=255)),
        Column('ramdisk_id', String(length=255)),
        Column('launch_index', Integer),
        Column('key_name', String(length=255)),
        Column('key_data', MediumText()),
        Column('power_state', Integer),
        Column('vm_state', String(length=255)),
        Column('memory_mb', Integer),
        Column('vcpus', Integer),
        Column('hostname', String(length=255)),
        Column('host', String(length=255)),
        Column('user_data', MediumText()),
        Column('reservation_id', String(length=255)),
        Column('scheduled_at', DateTime),
        Column('launched_at', DateTime),
        Column('terminated_at', DateTime),
        Column('display_name', String(length=255)),
        Column('display_description', String(length=255)),
        Column('availability_zone', String(length=255)),
        Column('locked', Boolean),
        Column('os_type', String(length=255)),
        Column('launched_on', MediumText()),
        Column('instance_type_id', Integer),
        Column('vm_mode', String(length=255)),
        Column('uuid', String(length=36)),
        Column('architecture', String(length=255)),
        Column('root_device_name', String(length=255)),
        Column('access_ip_v4', InetSmall()),
        Column('access_ip_v6', InetSmall()),
        Column('config_drive', String(length=255)),
        Column('task_state', String(length=255)),
        Column('default_ephemeral_device', String(length=255)),
        Column('default_swap_device', String(length=255)),
        Column('progress', Integer),
        Column('auto_disk_config', Boolean),
        Column('shutdown_terminate', Boolean),
        Column('disable_terminate', Boolean),
        Column('root_gb', Integer),
        Column('ephemeral_gb', Integer),
        Column('cell_name', String(length=255)),
        Column('node', String(length=255)),
        Column('deleted', Integer),
        Column('locked_by', inst_lock_enum),
        Column('cleaned', Integer, default=0),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    instance_actions = Table('instance_actions', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('action', String(length=255)),
        Column('instance_uuid', String(length=36)),
        Column('request_id', String(length=255)),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('start_time', DateTime),
        Column('finish_time', DateTime),
        Column('message', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    instance_actions_events = Table('instance_actions_events', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('event', String(length=255)),
        Column('action_id', Integer, ForeignKey('instance_actions.id')),
        Column('start_time', DateTime),
        Column('finish_time', DateTime),
        Column('result', String(length=255)),
        Column('traceback', Text),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    iscsi_targets = Table('iscsi_targets', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('target_num', Integer),
        Column('host', String(length=255)),
        Column('volume_id', String(length=36), nullable=True),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    key_pairs = Table('key_pairs', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('name', String(length=255)),
        Column('user_id', String(length=255)),
        Column('fingerprint', String(length=255)),
        Column('public_key', MediumText()),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    migrations = Table('migrations', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('source_compute', String(length=255)),
        Column('dest_compute', String(length=255)),
        Column('dest_host', String(length=255)),
        Column('status', String(length=255)),
        Column('instance_uuid', String(length=36)),
        Column('old_instance_type_id', Integer),
        Column('new_instance_type_id', Integer),
        Column('source_node', String(length=255)),
        Column('dest_node', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    networks = Table('networks', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('injected', Boolean),
        Column('cidr', Inet()),
        Column('netmask', InetSmall()),
        Column('bridge', String(length=255)),
        Column('gateway', InetSmall()),
        Column('broadcast', InetSmall()),
        Column('dns1', InetSmall()),
        Column('vlan', Integer),
        Column('vpn_public_address', InetSmall()),
        Column('vpn_public_port', Integer),
        Column('vpn_private_address', InetSmall()),
        Column('dhcp_start', InetSmall()),
        Column('project_id', String(length=255)),
        Column('host', String(length=255)),
        Column('cidr_v6', Inet()),
        Column('gateway_v6', InetSmall()),
        Column('label', String(length=255)),
        Column('netmask_v6', InetSmall()),
        Column('bridge_interface', String(length=255)),
        Column('multi_host', Boolean),
        Column('dns2', InetSmall()),
        Column('uuid', String(length=36)),
        Column('priority', Integer),
        Column('rxtx_base', Integer),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    pci_devices_uc_name = 'uniq_pci_devices0compute_node_id0address0deleted'
    pci_devices = Table('pci_devices', meta,
        Column('created_at', DateTime(timezone=False)),
        Column('updated_at', DateTime(timezone=False)),
        Column('deleted_at', DateTime(timezone=False)),
        Column('deleted', Integer, default=0, nullable=False),
        Column('id', Integer, primary_key=True),
        Column('compute_node_id', Integer, nullable=False),
        Column('address', String(12), nullable=False),
        Column('product_id', String(4)),
        Column('vendor_id', String(4)),
        Column('dev_type', String(8)),
        Column('dev_id', String(255)),
        Column('label', String(255), nullable=False),
        Column('status', String(36), nullable=False),
        Column('extra_info', Text, nullable=True),
        Column('instance_uuid', String(36), nullable=True),
        Index('ix_pci_devices_compute_node_id_deleted',
              'compute_node_id', 'deleted'),
        Index('ix_pci_devices_instance_uuid_deleted',
              'instance_uuid', 'deleted'),
        UniqueConstraint('compute_node_id',
                        'address', 'deleted',
                        name=pci_devices_uc_name),
        mysql_engine='InnoDB',
        mysql_charset='utf8')

    provider_fw_rules = Table('provider_fw_rules', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('protocol', String(length=5)),
        Column('from_port', Integer),
        Column('to_port', Integer),
        Column('cidr', Inet()),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    quota_classes = Table('quota_classes', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('class_name', String(length=255)),
        Column('resource', String(length=255)),
        Column('hard_limit', Integer),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    quota_usages = Table('quota_usages', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('project_id', String(length=255)),
        Column('resource', String(length=255)),
        Column('in_use', Integer, nullable=False),
        Column('reserved', Integer, nullable=False),
        Column('until_refresh', Integer),
        Column('deleted', Integer),
        Column('user_id', String(length=255)),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    quotas = Table('quotas', meta,
        Column('id', Integer, primary_key=True, nullable=False),
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('project_id', String(length=255)),
        Column('resource', String(length=255), nullable=False),
        Column('hard_limit', Integer),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    uniq_name = "uniq_project_user_quotas0user_id0project_id0resource0deleted"
    project_user_quotas = Table('project_user_quotas', meta,
                        Column('id', Integer, primary_key=True,
                               nullable=False),
                        Column('created_at', DateTime),
                        Column('updated_at', DateTime),
                        Column('deleted_at', DateTime),
                        Column('deleted', Integer),
                        Column('user_id',
                               String(length=255),
                               nullable=False),
                        Column('project_id',
                               String(length=255),
                               nullable=False),
                        Column('resource',
                               String(length=255),
                               nullable=False),
                        Column('hard_limit', Integer, nullable=True),
                        UniqueConstraint('user_id', 'project_id', 'resource',
                                         'deleted', name=uniq_name),
                        mysql_engine='InnoDB',
                        mysql_charset='utf8',
                        )

    reservations = Table('reservations', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('uuid', String(length=36), nullable=False),
        Column('usage_id', Integer, nullable=False),
        Column('project_id', String(length=255)),
        Column('resource', String(length=255)),
        Column('delta', Integer, nullable=False),
        Column('expire', DateTime),
        Column('deleted', Integer),
        Column('user_id', String(length=255)),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    s3_images = Table('s3_images', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('uuid', String(length=36), nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    security_group_instance_association = \
        Table('security_group_instance_association', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('security_group_id', Integer),
        Column('instance_uuid', String(length=36)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    security_group_rules = Table('security_group_rules', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('parent_group_id', Integer, ForeignKey('security_groups.id')),
        Column('protocol', String(length=255)),
        Column('from_port', Integer),
        Column('to_port', Integer),
        Column('cidr', Inet()),
        Column('group_id', Integer, ForeignKey('security_groups.id')),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    security_groups = Table('security_groups', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('name', String(length=255)),
        Column('description', String(length=255)),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    security_group_default_rules = Table('security_group_default_rules', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('deleted', Integer, default=0),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('protocol', String(length=5)),
        Column('from_port', Integer),
        Column('to_port', Integer),
        Column('cidr', Inet()),
        mysql_engine='InnoDB',
        mysql_charset='utf8',
    )

    services = Table('services', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('host', String(length=255)),
        Column('binary', String(length=255)),
        Column('topic', String(length=255)),
        Column('report_count', Integer, nullable=False),
        Column('disabled', Boolean),
        Column('deleted', Integer),
        Column('disabled_reason', String(length=255)),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    snapshot_id_mappings = Table('snapshot_id_mappings', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('uuid', String(length=36), nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    snapshots = Table('snapshots', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', String(length=36), primary_key=True, nullable=False),
        Column('volume_id', String(length=36), nullable=False),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('status', String(length=255)),
        Column('progress', String(length=255)),
        Column('volume_size', Integer),
        Column('scheduled_at', DateTime),
        Column('display_name', String(length=255)),
        Column('display_description', String(length=255)),
        Column('deleted', String(length=36)),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    task_log = Table('task_log', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('task_name', String(length=255), nullable=False),
        Column('state', String(length=255), nullable=False),
        Column('host', String(length=255), nullable=False),
        Column('period_beginning', DateTime, nullable=False),
        Column('period_ending', DateTime, nullable=False),
        Column('message', String(length=255), nullable=False),
        Column('task_items', Integer),
        Column('errors', Integer),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    virtual_interfaces = Table('virtual_interfaces', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('address', String(length=255)),
        Column('network_id', Integer),
        Column('uuid', String(length=36)),
        Column('instance_uuid', String(length=36), nullable=True),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    volume_id_mappings = Table('volume_id_mappings', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', Integer, primary_key=True, nullable=False),
        Column('uuid', String(length=36), nullable=False),
        Column('deleted', Integer),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    volumes = Table('volumes', meta,
        Column('created_at', DateTime),
        Column('updated_at', DateTime),
        Column('deleted_at', DateTime),
        Column('id', String(length=36), primary_key=True, nullable=False),
        Column('ec2_id', String(length=255)),
        Column('user_id', String(length=255)),
        Column('project_id', String(length=255)),
        Column('host', String(length=255)),
        Column('size', Integer),
        Column('availability_zone', String(length=255)),
        Column('mountpoint', String(length=255)),
        Column('status', String(length=255)),
        Column('attach_status', String(length=255)),
        Column('scheduled_at', DateTime),
        Column('launched_at', DateTime),
        Column('terminated_at', DateTime),
        Column('display_name', String(length=255)),
        Column('display_description', String(length=255)),
        Column('provider_location', String(length=256)),
        Column('provider_auth', String(length=256)),
        Column('snapshot_id', String(length=36)),
        Column('volume_type_id', Integer),
        Column('instance_uuid', String(length=36)),
        Column('attach_time', DateTime),
        Column('deleted', String(length=36)),
        mysql_engine='InnoDB',
        mysql_charset='utf8'
    )

    volume_usage_cache = Table('volume_usage_cache', meta,
            Column('created_at', DateTime(timezone=False)),
            Column('updated_at', DateTime(timezone=False)),
            Column('deleted_at', DateTime(timezone=False)),
            Column('id', Integer(), primary_key=True, nullable=False),
            Column('volume_id', String(36), nullable=False),
            Column('tot_last_refreshed', DateTime(timezone=False)),
            Column('tot_reads', BigInteger(), default=0),
            Column('tot_read_bytes', BigInteger(), default=0),
            Column('tot_writes', BigInteger(), default=0),
            Column('tot_write_bytes', BigInteger(), default=0),
            Column('curr_last_refreshed', DateTime(timezone=False)),
            Column('curr_reads', BigInteger(), default=0),
            Column('curr_read_bytes', BigInteger(), default=0),
            Column('curr_writes', BigInteger(), default=0),
            Column('curr_write_bytes', BigInteger(), default=0),
            Column('deleted', Integer),
            Column("instance_uuid", String(length=36)),
            Column("project_id", String(length=36)),
            Column("user_id", String(length=36)),
            Column("availability_zone", String(length=255)),
            mysql_engine='InnoDB',
            mysql_charset='utf8'
    )

    instances.create()
    Index('project_id', instances.c.project_id).create()
    Index('uuid', instances.c.uuid, unique=True).create()

    # create all tables
    tables = [aggregates, console_pools, instance_types,
              security_groups, snapshots, volumes,
              # those that are children and others later
              agent_builds, aggregate_hosts, aggregate_metadata,
              block_device_mapping, bw_usage_cache, cells,
              certificates, compute_node_stats, compute_nodes, consoles,
              dns_domains, fixed_ips, floating_ips,
              instance_faults, instance_id_mappings, instance_info_caches,
              instance_metadata, instance_system_metadata,
              instance_type_extra_specs, instance_type_projects,
              instance_actions, instance_actions_events,
              groups, group_metadata, group_policy, group_member,
              iscsi_targets, key_pairs, migrations, networks,
              pci_devices, provider_fw_rules, quota_classes, quota_usages,
              quotas, project_user_quotas,
              reservations, s3_images, security_group_instance_association,
              security_group_rules, security_group_default_rules,
              services, snapshot_id_mappings, task_log,
              virtual_interfaces,
              volume_id_mappings,
              volume_usage_cache]

    for table in tables:
        try:
            table.create()
        except Exception:
            LOG.info(repr(table))
            LOG.exception(_LE('Exception while creating table.'))
            raise

    # task log unique constraint
    task_log_uc = "uniq_task_log0task_name0host0period_beginning0period_ending"
    task_log_cols = ('task_name', 'host', 'period_beginning', 'period_ending')
    uc = UniqueConstraint(*task_log_cols, table=task_log, name=task_log_uc)
    uc.create()

    # networks unique constraint
    UniqueConstraint('vlan', 'deleted', table=networks,
                     name='uniq_networks0vlan0deleted').create()

    # instance_type_name constraint
    UniqueConstraint('name', 'deleted', table=instance_types,
                     name='uniq_instance_types0name0deleted').create()

    # flavorid unique constraint
    UniqueConstraint('flavorid', 'deleted', table=instance_types,
                     name='uniq_instance_types0flavorid0deleted').create()

    # keypair contraint
    UniqueConstraint('user_id', 'name', 'deleted', table=key_pairs,
                     name='uniq_key_pairs0user_id0name0deleted').create()

    # instance_type_projects constraint
    inst_type_uc_name = 'uniq_instance_type_projects0instance_type_id0' + \
                        'project_id0deleted'
    UniqueConstraint('instance_type_id', 'project_id', 'deleted',
                     table=instance_type_projects,
                     name=inst_type_uc_name).create()

    # floating_ips unique constraint
    UniqueConstraint('address', 'deleted',
                     table=floating_ips,
                     name='uniq_floating_ips0address0deleted').create()

    # instance_info_caches
    UniqueConstraint('instance_uuid',
                     table=instance_info_caches,
                     name='uniq_instance_info_caches0instance_uuid').create()

    UniqueConstraint('address', 'deleted',
                     table=virtual_interfaces,
                     name='uniq_virtual_interfaces0address0deleted').create()

    # cells
    UniqueConstraint('name', 'deleted',
                     table=cells,
                     name='uniq_cells0name0deleted').create()

    # security_groups
    uc = UniqueConstraint('project_id', 'name', 'deleted',
                     table=security_groups,
                     name='uniq_security_groups0project_id0name0deleted')
    uc.create()

    # quotas
    UniqueConstraint('project_id', 'resource', 'deleted',
                     table=quotas,
                     name='uniq_quotas0project_id0resource0deleted').create()

    # fixed_ips
    UniqueConstraint('address', 'deleted',
                     table=fixed_ips,
                     name='uniq_fixed_ips0address0deleted').create()

    # services
    UniqueConstraint('host', 'topic', 'deleted',
                     table=services,
                     name='uniq_services0host0topic0deleted').create()
    UniqueConstraint('host', 'binary', 'deleted',
                     table=services,
                     name='uniq_services0host0binary0deleted').create()

    # agent_builds
    uc_name = 'uniq_agent_builds0hypervisor0os0architecture0deleted'
    UniqueConstraint('hypervisor', 'os', 'architecture', 'deleted',
                     table=agent_builds,
                     name=uc_name).create()

    uc_name = 'uniq_console_pools0host0console_type0compute_host0deleted'
    UniqueConstraint('host', 'console_type', 'compute_host', 'deleted',
                     table=console_pools,
                     name=uc_name).create()

    uc_name = 'uniq_aggregate_hosts0host0aggregate_id0deleted'
    UniqueConstraint('host', 'aggregate_id', 'deleted',
                     table=aggregate_hosts,
                     name=uc_name).create()

    uc_name = 'uniq_aggregate_metadata0aggregate_id0key0deleted'
    UniqueConstraint('aggregate_id', 'key', 'deleted',
                     table=aggregate_metadata,
                     name=uc_name).create()

    uc_name = 'uniq_instance_type_extra_specs0instance_type_id0key0deleted'
    UniqueConstraint('instance_type_id', 'key', 'deleted',
                     table=instance_type_extra_specs,
                     name=uc_name).create()

    # created first (to preserve ordering for schema diffs)
    mysql_pre_indexes = [
        Index('instance_type_id', instance_type_projects.c.instance_type_id),
        Index('project_id', dns_domains.c.project_id),
        Index('fixed_ip_id', floating_ips.c.fixed_ip_id),
        Index('network_id', virtual_interfaces.c.network_id),
        Index('network_id', fixed_ips.c.network_id),
        Index('fixed_ips_virtual_interface_id_fkey',
                  fixed_ips.c.virtual_interface_id),
        Index('address', fixed_ips.c.address),
        Index('fixed_ips_instance_uuid_fkey', fixed_ips.c.instance_uuid),
        Index('instance_uuid', instance_system_metadata.c.instance_uuid),
        Index('iscsi_targets_volume_id_fkey', iscsi_targets.c.volume_id),
        Index('snapshot_id', block_device_mapping.c.snapshot_id),
        Index('usage_id', reservations.c.usage_id),
        Index('virtual_interfaces_instance_uuid_fkey',
              virtual_interfaces.c.instance_uuid),
        Index('volume_id', block_device_mapping.c.volume_id),

        Index('security_group_id',
              security_group_instance_association.c.security_group_id),
    ]

    # Common indexes (indexes we apply to all databases)
    # NOTE: order specific for MySQL diff support
    common_indexes = [

        # aggregate_metadata
        Index('aggregate_metadata_key_idx', aggregate_metadata.c.key),

        # agent_builds
        Index('agent_builds_hypervisor_os_arch_idx',
              agent_builds.c.hypervisor,
              agent_builds.c.os,
              agent_builds.c.architecture),

        # block_device_mapping
        Index('block_device_mapping_instance_uuid_idx',
              block_device_mapping.c.instance_uuid),

        Index('block_device_mapping_instance_uuid_device_name_idx',
              block_device_mapping.c.instance_uuid,
              block_device_mapping.c.device_name),

        # NOTE(dprince): This is now a duplicate index on MySQL and needs to
        # be removed there. We leave it here so the Index ordering
        # matches on schema diffs (for MySQL).
        # See Havana migration 186_new_bdm_format where we dropped the
        # virtual_name column.
        # IceHouse fix is here: https://bugs.launchpad.net/nova/+bug/1265839
        Index(
             'block_device_mapping_instance_uuid_virtual_name_device_name_idx',
             block_device_mapping.c.instance_uuid,
             block_device_mapping.c.device_name),

        Index('block_device_mapping_instance_uuid_volume_id_idx',
              block_device_mapping.c.instance_uuid,
              block_device_mapping.c.volume_id),

        # bw_usage_cache
        Index('bw_usage_cache_uuid_start_period_idx',
              bw_usage_cache.c.uuid, bw_usage_cache.c.start_period),

        Index('certificates_project_id_deleted_idx',
              certificates.c.project_id, certificates.c.deleted),
        Index('certificates_user_id_deleted_idx', certificates.c.user_id,
              certificates.c.deleted),

        # compute_node_stats
        Index('ix_compute_node_stats_compute_node_id',
              compute_node_stats.c.compute_node_id),
        Index('compute_node_stats_node_id_and_deleted_idx',
              compute_node_stats.c.compute_node_id,
              compute_node_stats.c.deleted),

        # consoles
        Index('consoles_instance_uuid_idx', consoles.c.instance_uuid),

        # dns_domains
        Index('dns_domains_domain_deleted_idx',
              dns_domains.c.domain, dns_domains.c.deleted),

        # fixed_ips
        Index('fixed_ips_host_idx', fixed_ips.c.host),

        Index('fixed_ips_network_id_host_deleted_idx', fixed_ips.c.network_id,
              fixed_ips.c.host, fixed_ips.c.deleted),

        Index('fixed_ips_address_reserved_network_id_deleted_idx',
              fixed_ips.c.address, fixed_ips.c.reserved,
              fixed_ips.c.network_id, fixed_ips.c.deleted),

        Index('fixed_ips_deleted_allocated_idx', fixed_ips.c.address,
              fixed_ips.c.deleted, fixed_ips.c.allocated),

        # floating_ips
        Index('floating_ips_host_idx', floating_ips.c.host),

        Index('floating_ips_project_id_idx', floating_ips.c.project_id),

        Index('floating_ips_pool_deleted_fixed_ip_id_project_id_idx',
              floating_ips.c.pool, floating_ips.c.deleted,
              floating_ips.c.fixed_ip_id, floating_ips.c.project_id),

        # group_member
        Index('instance_group_member_instance_idx',
              group_member.c.instance_id),

        # group_metadata
        Index('instance_group_metadata_key_idx', group_metadata.c.key),

        # group_policy
        Index('instance_group_policy_policy_idx', group_policy.c.policy),

        # instances
        Index('instances_reservation_id_idx',
              instances.c.reservation_id),
        Index('instances_terminated_at_launched_at_idx',
              instances.c.terminated_at,
              instances.c.launched_at),

        Index('instances_task_state_updated_at_idx',
              instances.c.task_state,
              instances.c.updated_at),

        Index('instances_host_deleted_idx', instances.c.host,
              instances.c.deleted),

        Index('instances_uuid_deleted_idx', instances.c.uuid,
              instances.c.deleted),

        Index('instances_host_node_deleted_idx', instances.c.host,
              instances.c.node, instances.c.deleted),

        Index('instances_host_deleted_cleaned_idx',
                          instances.c.host, instances.c.deleted,
                          instances.c.cleaned),

        # instance_actions
        Index('instance_uuid_idx', instance_actions.c.instance_uuid),
        Index('request_id_idx', instance_actions.c.request_id),

        # instance_faults
        Index('instance_faults_host_idx', instance_faults.c.host),
        Index('instance_faults_instance_uuid_deleted_created_at_idx',
              instance_faults.c.instance_uuid, instance_faults.c.deleted,
              instance_faults.c.created_at),

        # instance_id_mappings
        Index('ix_instance_id_mappings_uuid', instance_id_mappings.c.uuid),

        # instance_metadata
        Index('instance_metadata_instance_uuid_idx',
              instance_metadata.c.instance_uuid),

        # instance_type_extra_specs
        Index('instance_type_extra_specs_instance_type_id_key_idx',
              instance_type_extra_specs.c.instance_type_id,
              instance_type_extra_specs.c.key),

        # iscsi_targets
        Index('iscsi_targets_host_idx', iscsi_targets.c.host),

        Index('iscsi_targets_host_volume_id_deleted_idx',
              iscsi_targets.c.host, iscsi_targets.c.volume_id,
              iscsi_targets.c.deleted),

        # migrations
        Index('migrations_by_host_nodes_and_status_idx',
              migrations.c.deleted, migrations.c.source_compute,
              migrations.c.dest_compute, migrations.c.source_node,
              migrations.c.dest_node, migrations.c.status),

        Index('migrations_instance_uuid_and_status_idx',
              migrations.c.deleted, migrations.c.instance_uuid,
              migrations.c.status),

        # networks
        Index('networks_host_idx', networks.c.host),

        Index('networks_cidr_v6_idx', networks.c.cidr_v6),

        Index('networks_bridge_deleted_idx', networks.c.bridge,
              networks.c.deleted),

        Index('networks_project_id_deleted_idx', networks.c.project_id,
              networks.c.deleted),

        Index('networks_uuid_project_id_deleted_idx',
              networks.c.uuid, networks.c.project_id, networks.c.deleted),

        Index('networks_vlan_deleted_idx', networks.c.vlan,
              networks.c.deleted),

        # project_user_quotas
        Index('project_user_quotas_project_id_deleted_idx',
              project_user_quotas.c.project_id,
              project_user_quotas.c.deleted),
        Index('project_user_quotas_user_id_deleted_idx',
              project_user_quotas.c.user_id, project_user_quotas.c.deleted),

        # reservations
        Index('ix_reservations_project_id', reservations.c.project_id),
        Index('ix_reservations_user_id_deleted',
              reservations.c.user_id, reservations.c.deleted),
        Index('reservations_uuid_idx', reservations.c.uuid),

        # security_group_instance_association
        Index('security_group_instance_association_instance_uuid_idx',
              security_group_instance_association.c.instance_uuid),

        # task_log
        Index('ix_task_log_period_beginning', task_log.c.period_beginning),
        Index('ix_task_log_host', task_log.c.host),
        Index('ix_task_log_period_ending', task_log.c.period_ending),

        # quota_classes
        Index('ix_quota_classes_class_name', quota_classes.c.class_name),

        # quota_usages
        Index('ix_quota_usages_project_id', quota_usages.c.project_id),
        Index('ix_quota_usages_user_id_deleted',
              quota_usages.c.user_id, quota_usages.c.deleted),

        # volumes
        Index('volumes_instance_uuid_idx', volumes.c.instance_uuid),

    ]

    # MySQL specific indexes
    if migrate_engine.name == 'mysql':
        for index in mysql_pre_indexes:
            index.create(migrate_engine)

        # mysql-specific index by leftmost 100 chars.  (mysql gets angry if the
        # index key length is too long.)
        sql = ("create index migrations_by_host_nodes_and_status_idx ON "
               "migrations (deleted, source_compute(100), dest_compute(100), "
               "source_node(100), dest_node(100), status)")
        migrate_engine.execute(sql)

    # PostgreSQL specific indexes
    if migrate_engine.name == 'postgresql':
        Index('address', fixed_ips.c.address).create()

    # NOTE(dprince): PostgreSQL doesn't allow duplicate indexes
    # so we skip creation of select indexes (so schemas match exactly).
    POSTGRES_INDEX_SKIPS = [
        # See Havana migration 186_new_bdm_format where we dropped the
        # virtual_name column.
        # IceHouse fix is here: https://bugs.launchpad.net/nova/+bug/1265839
        'block_device_mapping_instance_uuid_virtual_name_device_name_idx'
    ]

    MYSQL_INDEX_SKIPS = [
        # we create this one manually for MySQL above
        'migrations_by_host_nodes_and_status_idx'
    ]

    for index in common_indexes:
        if migrate_engine.name == 'postgresql' and \
            index.name in POSTGRES_INDEX_SKIPS:
            continue
        if migrate_engine.name == 'mysql' and \
            index.name in MYSQL_INDEX_SKIPS:
            continue
        else:
            index.create(migrate_engine)

    Index('project_id', dns_domains.c.project_id).drop

    fkeys = [
              [[fixed_ips.c.instance_uuid],
                  [instances.c.uuid],
                  'fixed_ips_instance_uuid_fkey'],
              [[block_device_mapping.c.instance_uuid],
                  [instances.c.uuid],
                  'block_device_mapping_instance_uuid_fkey'],
              [[instance_info_caches.c.instance_uuid],
                  [instances.c.uuid],
                  'instance_info_caches_instance_uuid_fkey'],
              [[instance_metadata.c.instance_uuid],
                  [instances.c.uuid],
                  'instance_metadata_instance_uuid_fkey'],
              [[instance_system_metadata.c.instance_uuid],
                  [instances.c.uuid],
                  'instance_system_metadata_ibfk_1'],
              [[instance_type_projects.c.instance_type_id],
                  [instance_types.c.id],
                  'instance_type_projects_ibfk_1'],
              [[iscsi_targets.c.volume_id],
                  [volumes.c.id],
                  'iscsi_targets_volume_id_fkey'],
              [[reservations.c.usage_id],
                  [quota_usages.c.id],
                  'reservations_ibfk_1'],
              [[security_group_instance_association.c.instance_uuid],
                  [instances.c.uuid],
                  'security_group_instance_association_instance_uuid_fkey'],
              [[security_group_instance_association.c.security_group_id],
                  [security_groups.c.id],
                  'security_group_instance_association_ibfk_1'],
              [[virtual_interfaces.c.instance_uuid],
                  [instances.c.uuid],
                  'virtual_interfaces_instance_uuid_fkey'],
              [[compute_node_stats.c.compute_node_id],
                  [compute_nodes.c.id],
                  'fk_compute_node_stats_compute_node_id'],
              [[compute_nodes.c.service_id],
                  [services.c.id],
                  'fk_compute_nodes_service_id'],
              [[instance_actions.c.instance_uuid],
                  [instances.c.uuid],
                  'fk_instance_actions_instance_uuid'],
              [[instance_faults.c.instance_uuid],
                  [instances.c.uuid],
                  'fk_instance_faults_instance_uuid'],
              [[migrations.c.instance_uuid],
                  [instances.c.uuid],
                  'fk_migrations_instance_uuid'],
            ]

    for fkey_pair in fkeys:
        if migrate_engine.name == 'mysql':
            # For MySQL we name our fkeys explicitly so they match Havana
            fkey = ForeignKeyConstraint(columns=fkey_pair[0],
                                   refcolumns=fkey_pair[1],
                                   name=fkey_pair[2])
            fkey.create()
        elif migrate_engine.name == 'postgresql':
            # PostgreSQL names things like it wants (correct and compatible!)
            fkey = ForeignKeyConstraint(columns=fkey_pair[0],
                                   refcolumns=fkey_pair[1])
            fkey.create()

    if migrate_engine.name == 'mysql':
        # In Folsom we explicitly converted migrate_version to UTF8.
        migrate_engine.execute(
            'ALTER TABLE migrate_version CONVERT TO CHARACTER SET utf8')
        # Set default DB charset to UTF8.
        migrate_engine.execute(
            'ALTER DATABASE %s DEFAULT CHARACTER SET utf8' %
            migrate_engine.url.database)

    _create_shadow_tables(migrate_engine)

    # populate initial instance types
    _populate_instance_types(instance_types)

    _create_dump_tables(migrate_engine)


def downgrade(migrate_engine):
    raise NotImplementedError('Downgrade from Havana is unsupported.')
