def test_get_chassis_availability_zones_no_azs(self):
chassis = fakes.FakeOvsdbRow.create_one_ovsdb_row(attrs={
'external_ids': {
'ovn-cms-options': 'enable-chassis-as-gw'
}
})
self.assertEqual(set(), utils.get_chassis_availability_zones(chassis))
def as_dict(self, alive):
return {
'binary':
self.binary,
'host':
self.chassis.hostname,
'heartbeat_timestamp':
timeutils.utcnow(),
'availability_zone':
', '.join(ovn_utils.get_chassis_availability_zones(self.chassis)),
'topic':
'n/a',
'description':
self.description,
'configurations': {
'chassis_name':
self.chassis.name,
'bridge-mappings':
self.chassis.external_ids.get('ovn-bridge-mappings', '')
},
'start_flag':
True,
'agent_type':
self.agent_type,
'id':
self.agent_id,
'alive':
alive,
'admin_state_up':
True
}
def test_get_chassis_availability_zones_multiple_az(self):
chassis = fakes.FakeOvsdbRow.create_one_ovsdb_row(attrs={
'external_ids': {
'ovn-cms-options':
'enable-chassis-as-gw,availability-zones=az0:az1 :az2:: :'}})
self.assertEqual(
{'az0', 'az1', 'az2'},
utils.get_chassis_availability_zones(chassis))
def match_fn(self, event, row, old):
if event != self.ROW_UPDATE:
return True
# NOTE(lucasgomes): If the external_ids column wasn't updated
# (meaning, Chassis "gateway" status didn't change) just returns
if not hasattr(old, 'external_ids') and event == self.ROW_UPDATE:
return False
if (old.external_ids.get('ovn-bridge-mappings') !=
row.external_ids.get('ovn-bridge-mappings')):
return True
# Check if either the Gateway status or Availability Zones has
# changed in the Chassis
is_gw = utils.is_gateway_chassis(row)
is_gw_old = utils.is_gateway_chassis(old)
azs = utils.get_chassis_availability_zones(row)
old_azs = utils.get_chassis_availability_zones(old)
if is_gw != is_gw_old or azs != old_azs:
return True
return False
def handle_ha_chassis_group_changes(self, event, row, old):
"""Handle HA Chassis Group changes.
This method handles the inclusion and removal of Chassis to/from
the default HA Chassis Group.
"""
if not self.driver._ovn_client.is_external_ports_supported():
return
is_gw_chassis = utils.is_gateway_chassis(row)
# If the Chassis being created is not a gateway, ignore it
if not is_gw_chassis and event == self.ROW_CREATE:
return
azs = utils.get_chassis_availability_zones(row)
if event == self.ROW_UPDATE:
is_old_gw = utils.is_gateway_chassis(old)
if is_gw_chassis and is_old_gw:
old_azs = utils.get_chassis_availability_zones(old)
# If there are no differences in the AZs, return
if azs == old_azs:
return
# Find out the HA Chassis Groups that were affected by
# the update (to add and/or remove the updated Chassis)
ha_ch_add = self._get_ha_chassis_groups_within_azs(
azs - old_azs)
ha_ch_del = self._get_ha_chassis_groups_within_azs(
old_azs - azs)
with self.driver.nb_ovn.transaction(check_error=True) as txn:
for hcg in ha_ch_add:
min_priority = self._get_min_priority_in_hcg(hcg)
txn.add(
self.driver.nb_ovn.ha_chassis_group_add_chassis(
hcg.name, row.name, priority=min_priority))
for hcg in ha_ch_del:
txn.add(
self.driver.nb_ovn.ha_chassis_group_del_chassis(
hcg.name, row.name, if_exists=True))
return
elif not is_gw_chassis and is_old_gw:
# Chassis is not a gateway anymore, treat it as deletion
event = self.ROW_DELETE
elif is_gw_chassis and not is_old_gw:
# Chassis is now a gateway, treat it as creation
event = self.ROW_CREATE
if event == self.ROW_CREATE:
ha_chassis_list = self._get_ha_chassis_groups_within_azs(azs)
with self.driver.nb_ovn.transaction(check_error=True) as txn:
for hcg in ha_chassis_list:
min_priority = self._get_min_priority_in_hcg(hcg)
txn.add(self.driver.nb_ovn.ha_chassis_group_add_chassis(
hcg.name, row.name, priority=min_priority))
elif event == self.ROW_DELETE:
ha_chassis_list = self._get_ha_chassis_groups_within_azs(azs)
with self.driver.nb_ovn.transaction(check_error=True) as txn:
for hcg in ha_chassis_list:
txn.add(self.driver.nb_ovn.ha_chassis_group_del_chassis(
hcg.name, row.name, if_exists=True))
def get_chassis_and_azs(self):
chassis_azs = {}
for ch in self.chassis_list().execute(check_error=True):
chassis_azs[ch.name] = utils.get_chassis_availability_zones(ch)
return chassis_azs
def test_get_chassis_availability_zones_malformed(self):
chassis = fakes.FakeOvsdbRow.create_one_ovsdb_row(attrs={
'external_ids': {'ovn-cms-options':
'enable-chassis-as-gw,availability-zones:az0'}})
self.assertEqual(
[], utils.get_chassis_availability_zones(chassis))
