def test_atomic_set(self):
"""Test atomic replacement of IPSet content.
"""
test_content = (x for x in ['a', 'b', 'c'])
iptables.atomic_set('target', test_content,
'some:type', foo='bar')
iptables.create_set.assert_called_with(
mock.ANY, set_type='some:type', foo='bar'
)
tmp_set = iptables.create_set.call_args[0][0]
iptables.ipset_restore.assert_called_with(
(
"add {tmp_set} a\n"
"add {tmp_set} b\n"
"add {tmp_set} c"
).format(tmp_set=tmp_set)
)
iptables.swap_set.assert_called_with(
'target', tmp_set
)
iptables.destroy_set.assert_called_with(
tmp_set
)
def _update_nodes_change(data):
"""Update local Treadmill Nodes IP IPSet when the globals server list gets
updated."""
servers = yaml.load(data)
server_ips = []
for server in servers:
try:
server_ip = socket.gethostbyname(server)
server_ips.append(server_ip)
except socket.gaierror:
_LOGGER.warning('Unable to resolve %r', server)
continue
iptables.atomic_set(iptables.SET_TM_NODES,
content=server_ips,
set_type='hash:ip',
family='inet')
def synchronize(self):
"""Cleanup state resource.
"""
for app_unique_name in six.viewkeys(self._devices.copy()):
if not self._devices[app_unique_name].get('stale', False):
continue
# This is a stale device, destroy it.
self.on_delete_request(app_unique_name)
# Reset the container environment sets to the IP we have now cleaned
# up. This is more complex than expected because multiple environment
# can be merged in the same set in _SET_BY_ENVIRONMENT.
container_env_ips = {}
for set_name in set(_SET_BY_ENVIRONMENT.values()):
key = sorted(
[
env for env in _SET_BY_ENVIRONMENT
if _SET_BY_ENVIRONMENT[env] == set_name
]
)
container_env_ips[tuple(key)] = set()
for set_envs, set_ips in six.viewitems(container_env_ips):
for device in six.viewvalues(self._devices):
if device['environment'] not in set_envs:
continue
set_ips.add(device['ip'])
for set_envs, set_ips in six.viewitems(container_env_ips):
iptables.atomic_set(
_SET_BY_ENVIRONMENT[set_envs[0]],
set_ips,
set_type='hash:ip',
family='inet', hashsize=1024, maxelem=65536
)
# It is now safe to clean up all remaining vIPs without resource.
self._vips.garbage_collect()
# Read bridge status
self._bridge_mtu = netdev.dev_mtu(self._TMBR_DEV)
