**** CubicPower OpenStack Study ****
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)
**** CubicPower OpenStack Study ****
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)