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# Copyright 2013 OpenStack Foundation
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#         http://www.apache.org/licenses/LICENSE-2.0
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"""Add portbindings db

Revision ID: 176a85fc7d79
Revises: grizzly
Create Date: 2013-03-21 14:59:53.052600

"""

# revision identifiers, used by Alembic.
revision = '176a85fc7d79'
down_revision = 'grizzly'

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

migration_for_plugins = [
    'quantum.plugins.openvswitch.ovs_quantum_plugin.OVSQuantumPluginV2',
    'quantum.plugins.linuxbridge.lb_quantum_plugin.LinuxBridgePluginV2',
]

from alembic import op
import sqlalchemy as sa

from quantum.db import migration


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

    op.create_table(
        'portbindingports',
        sa.Column('port_id', sa.String(length=36), nullable=False),
        sa.Column('host', sa.String(length=255), nullable=False),
        sa.ForeignKeyConstraint(['port_id'], ['ports.id'], ondelete='CASCADE'),
        sa.PrimaryKeyConstraint('port_id')
    )


def downgrade(active_plugin=None, options=None):
    if not migration.should_run(active_plugin, migration_for_plugins):
        return
    op.drop_table('portbindingports')
