def delete_port_chain(self, context, id):
# if this port chain is part of a graph, abort delete:
if self._any_port_chains_in_a_graph(context, {id}):
raise ext_sg.ServiceGraphPortChainInUse(id=id)
try:
with db_api.context_manager.writer.using(context):
pc = self._get_port_chain(context, id)
context.session.delete(pc)
except ext_sfc.PortChainNotFound:
LOG.info("Deleting a non-existing port chain.")
def update_port_chain(self, context, id, port_chain):
pc = port_chain['port_chain']
# if this port chain is part of a graph, abort non-neutral updates:
if self._any_port_chains_in_a_graph(context, {id}):
if 'flow_classifiers' in pc or 'port_pair_groups' in pc:
raise ext_sg.ServiceGraphPortChainInUse(id=id)
with db_api.context_manager.writer.using(context):
pc_db = self._get_port_chain(context, id)
for k, v in pc.items():
if k == 'flow_classifiers':
self._validate_flow_classifiers(context, v, pc_id=id)
self._setup_chain_classifier_associations(
context, pc_db, v)
elif k == 'port_pair_groups':
self._validate_port_pair_groups(context, v, pc_id=id)
self._setup_chain_group_associations(context, pc_db, v)
else:
pc_db[k] = v
return self._make_port_chain_dict(pc_db)
