**** CubicPower OpenStack Study ****
def upgrade(active_plugins=None, options=None):
if not migration.should_run(active_plugins, migration_for_plugins):
return
# Create table for network mappings
op.create_table(
'neutron_nsx_network_mappings',
sa.Column('neutron_id', sa.String(length=36), nullable=False),
sa.Column('nsx_id', sa.String(length=36), nullable=True),
sa.ForeignKeyConstraint(['neutron_id'], ['networks.id'],
ondelete='CASCADE'),
# There might be multiple switches for a neutron network
sa.PrimaryKeyConstraint('neutron_id', 'nsx_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('neutron_nsx_network_mappings')