def _port_update(resource, event, trigger, payload):
l3plugin = directory.get_plugin(plugin_constants.L3)
if not l3plugin:
return
context = payload.context
current = payload.latest_state
original = payload.states[0]
# The OVN NB DB has a constraint where network has to be
# greater than 0. Updating it with an empty network would
# cause a constraint violation error. This problem happens
# when the last IP of a LRP is deleted, in order to avoid it
# an exception needs to be thrown before any write is performed
# to the DB, since if not it would leave the Neutron DB and the
# OVN DB unsync.
# https://bugs.launchpad.net/neutron/+bug/1948457
if (event == events.BEFORE_UPDATE and 'fixed_ips' in current
and not current['fixed_ips']
and utils.is_lsp_router_port(original)):
reason = _("Router port must have at least one IP.")
raise n_exc.ServicePortInUse(port_id=original['id'], reason=reason)
if event == events.AFTER_UPDATE and utils.is_lsp_router_port(current):
# We call the update_router port with if_exists, because neutron,
# internally creates the port, and then calls update, which will
# trigger this callback even before we had the chance to create
# the OVN NB DB side
l3plugin._ovn_client.update_router_port(context,
current,
if_exists=True)
def _prevent_local_port_delete_callback(resource,
event,
trigger,
payload=None):
port_id = payload.resource_id
if lip_obj.LocalIP.count(payload.context, local_port_id=port_id):
reason = _('still referenced by Local IPs')
raise lib_exc.ServicePortInUse(port_id=port_id, reason=reason)
def prevent_l2gw_port_deletion(self, context, port_id):
"""Prevent core plugin from deleting L2 gateway port."""
try:
port = self._core_plugin.get_port(context, port_id)
except n_exc.PortNotFound:
return
if port['device_owner'] == nsx_constants.BRIDGE_ENDPOINT:
reason = _("has device owner %s") % port['device_owner']
raise n_exc.ServicePortInUse(port_id=port_id, reason=reason)
def prevent_lbaasv2_port_deletion(self, context, port_id):
try:
port_db = self._core_plugin._get_port(context, port_id)
except n_exc.PortNotFound:
return
if port_db['device_owner'] == n_const.DEVICE_OWNER_LOADBALANCERV2:
filters = {'vip_port_id': [port_id]}
if len(self.get_loadbalancers(context, filters=filters)) > 0:
reason = _('has device owner %s') % port_db['device_owner']
raise n_exc.ServicePortInUse(port_id=port_db['id'],
reason=reason)
