OpenStack Study: 1d76643bcec4_nvp_netbinding.py

**** CubicPower OpenStack Study ****

def upgrade(active_plugins=None, options=None):

    if not migration.should_run(active_plugins, migration_for_plugins):

        return

    op.create_table(

        'nvp_network_bindings',

        sa.Column('network_id', sa.String(length=36), nullable=False),

        sa.Column('binding_type',

                  sa.Enum('flat', 'vlan', 'stt', 'gre',

                          name='nvp_network_bindings_binding_type'),

                  nullable=False),

        sa.Column('tz_uuid', sa.String(length=36), nullable=True),

        sa.Column('vlan_id', sa.Integer(), nullable=True),

        sa.ForeignKeyConstraint(['network_id'], ['networks.id'],

                                ondelete='CASCADE'),

        sa.PrimaryKeyConstraint('network_id'))

**** CubicPower OpenStack Study ****

def downgrade(active_plugins=None, options=None):

    if not migration.should_run(active_plugins, migration_for_plugins):

        return

    op.drop_table('nvp_network_bindings')