# Copyright 2011 OpenStack LLC
# All Rights Reserved.
#
#    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 sqlalchemy import *
from migrate import *

from nova import log as logging


meta = MetaData()


# Table stub-definitions
# Just for the ForeignKey and column creation to succeed, these are not the
# actual definitions of instances or services.
#
fixed_ips = Table(
    "fixed_ips",
    meta,
    Column(
        "id",
        Integer(),
        primary_key=True,
        nullable=False))

#
# New Tables
#
# None

#
# Tables to alter
#
# None

#
# Columns to add to existing tables
#

fixed_ips_addressV6 = Column(
    "addressV6",
    String(
        length=255,
        convert_unicode=False,
        assert_unicode=None,
        unicode_error=None,
        _warn_on_bytestring=False))


fixed_ips_netmaskV6 = Column(
    "netmaskV6",
    String(
        length=3,
        convert_unicode=False,
        assert_unicode=None,
        unicode_error=None,
        _warn_on_bytestring=False))


fixed_ips_gatewayV6 = Column(
    "gatewayV6",
    String(
        length=255,
        convert_unicode=False,
        assert_unicode=None,
        unicode_error=None,
        _warn_on_bytestring=False))


def upgrade(migrate_engine):
    # Upgrade operations go here. Don't create your own engine;
    # bind migrate_engine to your metadata
    meta.bind = migrate_engine

    # Add columns to existing tables
    fixed_ips.create_column(fixed_ips_addressV6)
    fixed_ips.create_column(fixed_ips_netmaskV6)
    fixed_ips.create_column(fixed_ips_gatewayV6)
