OpenStack Study: meta_db_v2.py

**** CubicPower OpenStack Study ****

def get_flavor_by_network(session, net_id):

    try:

        binding = (session.query(meta_models_v2.NetworkFlavor).

                   filter_by(network_id=net_id).

                   one())

    except exc.NoResultFound:

        return None

    return binding.flavor

**** CubicPower OpenStack Study ****

def add_network_flavor_binding(session, flavor, net_id):

    binding = meta_models_v2.NetworkFlavor(flavor=flavor, network_id=net_id)

    session.add(binding)

    return binding

**** CubicPower OpenStack Study ****

def get_flavor_by_router(session, router_id):

    try:

        binding = (session.query(meta_models_v2.RouterFlavor).

                   filter_by(router_id=router_id).

                   one())

    except exc.NoResultFound:

        return None

    return binding.flavor

**** CubicPower OpenStack Study ****

def add_router_flavor_binding(session, flavor, router_id):

    binding = meta_models_v2.RouterFlavor(flavor=flavor, router_id=router_id)

    session.add(binding)

    return binding