from what I understand based on dependency_validations.py, it seems to treat SFC port pair and port pair group as equivalent for purposes of dependency checking... so I guess we'll do the same on the ODL side, and call the same method?

see NEUTRON-185, I seem to have misunderstood this, for port pair it is:

def _generate_sfc_port_pair_deps(data):
    object_ids = []
    ingress_port = data.get('ingress')
    if ingress_port is not None:
        object_ids.append(ingress_port)

    egress_port = data.get('egress')
    if egress_port is not None:
        object_ids.append(egress_port)

    return object_ids

thapar, mpeterson, jhershbe, mkolesni@redhat.com anything else to consider for this?

In general also deletion deps need to be considered