# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright 2013 OpenStack Foundation
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#    Licensed under the Apache License, Version 2.0 (the "License"); you may
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#    a copy of the License at
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#         http://www.apache.org/licenses/LICENSE-2.0
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#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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"""NEC PacketFilter network_id nullable fix

Revision ID: 2528ceb28230
Revises: 1064e98b7917
Create Date: 2013-09-24 12:07:43.124256

"""

# revision identifiers, used by Alembic.
revision = '2528ceb28230'
down_revision = '1064e98b7917'

# Change to ['*'] if this migration applies to all plugins

migration_for_plugins = [
    'neutron.plugins.nec.nec_plugin.NECPluginV2'
]

from alembic import op
import sqlalchemy as sa

from neutron.db import migration


def upgrade(active_plugins=None, options=None):
    if not migration.should_run(active_plugins, migration_for_plugins):
        return

    op.alter_column('packetfilters', 'network_id',
                    existing_type=sa.String(length=36),
                    nullable=False)


def downgrade(active_plugins=None, options=None):
    if not migration.should_run(active_plugins, migration_for_plugins):
        return

    # NOTE(amotoki): There is a bug that nullable of network_id is
    # set to True by mistake in folsom_initial (bug 1229508).
    # To make sure nullable=False in any revision, nullable is set
    # to False in both upgrade and downgrade.
    op.alter_column('packetfilters', 'network_id',
                    existing_type=sa.String(length=36),
                    nullable=False)