def _get_mcast_group_for_vni(self, context, vni):
session = bc.get_tunnel_session(context)
mcast_grp = (session.query(nexus_models_v2.NexusMcastGroup).
filter_by(associated_vni=vni).first())
if not mcast_grp:
mcast_grp = self._allocate_mcast_group(session, vni)
return mcast_grp
def release_segment(self, context, segment):
vxlan_vni = segment[api.SEGMENTATION_ID]
inside = any(lo <= vxlan_vni <= hi for lo, hi in self.tunnel_ranges)
session = bc.get_tunnel_session(context)
with session.begin(subtransactions=True):
query = (session.query(
nexus_models_v2.NexusVxlanAllocation).
filter_by(vxlan_vni=vxlan_vni))
if inside:
count = query.update({"allocated": False})
if count:
mcast_row = (
session.query(nexus_models_v2.NexusMcastGroup)
.filter_by(associated_vni=vxlan_vni).first())
session.delete(mcast_row)
LOG.debug("Releasing vxlan tunnel %s to pool",
vxlan_vni)
else:
count = query.delete()
if count:
LOG.debug("Releasing vxlan tunnel %s outside pool",
vxlan_vni)
if not count:
LOG.warning("vxlan_vni %s not found", vxlan_vni)