def _allocate_vr_id(self, context, network_id, router_id):
# TODO(kevinbenton): let decorator handle duplicate retry
# like in review.openstack.org/#/c/367179/1/neutron/db/l3_hamode_db.py
for count in range(MAX_ALLOCATION_TRIES):
try:
# NOTE(kevinbenton): we disallow subtransactions because the
# retry logic will bust any parent transactions
with context.session.begin():
allocated_vr_ids = self._get_allocated_vr_id(context,
network_id)
available_vr_ids = VR_ID_RANGE - allocated_vr_ids
if not available_vr_ids:
raise l3_ha.NoVRIDAvailable(router_id=router_id)
allocation = l3ha_model.L3HARouterVRIdAllocation()
allocation.network_id = network_id
allocation.vr_id = available_vr_ids.pop()
context.session.add(allocation)
return allocation.vr_id
except db_exc.DBDuplicateEntry:
LOG.info(_LI("Attempt %(count)s to allocate a VRID in the "
"network %(network)s for the router %(router)s"),
{'count': count, 'network': network_id,
'router': router_id})
raise l3_ha.MaxVRIDAllocationTriesReached(
network_id=network_id, router_id=router_id,
max_tries=MAX_ALLOCATION_TRIES)
def _ensure_vr_id(self, context, router_db, ha_network):
router_id = router_db.id
network_id = ha_network.network_id
# TODO(kevinbenton): let decorator handle duplicate retry
# like in review.openstack.org/#/c/367179/1/neutron/db/l3_hamode_db.py
for count in range(MAX_ALLOCATION_TRIES):
try:
# NOTE(kevinbenton): we disallow subtransactions because the
# retry logic will bust any parent transactions
with context.session.begin():
if router_db.extra_attributes.ha_vr_id:
LOG.debug(
"Router %(router_id)s has already been "
"allocated a ha_vr_id %(ha_vr_id)d!",
{'router_id': router_id,
'ha_vr_id': router_db.extra_attributes.ha_vr_id})
return
vr_id = self._get_vr_id(context, network_id)
if vr_id is None:
raise l3_ha.NoVRIDAvailable(router_id=router_id)
allocation = l3ha_model.L3HARouterVRIdAllocation()
allocation.network_id = network_id
allocation.vr_id = vr_id
context.session.add(allocation)
router_db.extra_attributes.ha_vr_id = allocation.vr_id
LOG.debug(
"Router %(router_id)s has been allocated a ha_vr_id "
"%(ha_vr_id)d.",
{'router_id': router_id, 'ha_vr_id': allocation.vr_id})
return allocation.vr_id
except db_exc.DBDuplicateEntry:
LOG.info(_LI("Attempt %(count)s to allocate a VRID in the "
"network %(network)s for the router %(router)s"),
{'count': count, 'network': network_id,
'router': router_id})
raise l3_ha.MaxVRIDAllocationTriesReached(
network_id=network_id, router_id=router_id,
max_tries=MAX_ALLOCATION_TRIES)
