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neutron/neutron/tests/unit/api/rpc/agentnotifiers/test_dhcp_rpc_agent_api.py

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# Copyright (c) 2013 Red Hat, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
# implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import copy
import datetime
import mock
from neutron_lib.callbacks import events
from neutron_lib.callbacks import registry
from neutron_lib.callbacks import resources
from neutron_lib import constants
from neutron_lib.plugins import directory
from oslo_utils import timeutils
from oslo_utils import uuidutils
from neutron.api.rpc.agentnotifiers import dhcp_rpc_agent_api
from neutron.common import utils
from neutron.db.agentschedulers_db import cfg
from neutron.objects import agent as agent_obj
from neutron.tests import base
class TestDhcpAgentNotifyAPI(base.BaseTestCase):
def setUp(self):
super(TestDhcpAgentNotifyAPI, self).setUp()
self.notifier = (
dhcp_rpc_agent_api.DhcpAgentNotifyAPI(plugin=mock.Mock()))
mock_util_p = mock.patch.object(utils, 'is_extension_supported')
mock_log_p = mock.patch.object(dhcp_rpc_agent_api, 'LOG')
mock_fanout_p = mock.patch.object(self.notifier, '_fanout_message')
mock_cast_p = mock.patch.object(self.notifier, '_cast_message')
self.mock_util = mock_util_p.start()
self.mock_log = mock_log_p.start()
self.mock_fanout = mock_fanout_p.start()
self.mock_cast = mock_cast_p.start()
def _test__schedule_network(self, network,
new_agents=None, existing_agents=None,
expected_casts=0, expected_warnings=0):
self.notifier.plugin.schedule_network.return_value = new_agents
agents = self.notifier._schedule_network(
mock.ANY, network, existing_agents)
if new_agents is None:
new_agents = []
self.assertEqual(new_agents + existing_agents, agents)
self.assertEqual(expected_casts, self.mock_cast.call_count)
self.assertEqual(expected_warnings, self.mock_log.warning.call_count)
def test__schedule_network(self):
agent = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid(),
host='host')
agent.admin_state_up = True
agent.heartbeat_timestamp = timeutils.utcnow()
network = {'id': 'foo_net_id'}
self._test__schedule_network(network,
new_agents=[agent], existing_agents=[],
expected_casts=1, expected_warnings=0)
def test__schedule_network_no_existing_agents(self):
agent = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent.admin_state_up = True
agent.heartbeat_timestamp = timeutils.utcnow()
network = {'id': 'foo_net_id'}
self._test__schedule_network(network,
new_agents=None, existing_agents=[agent],
expected_casts=0, expected_warnings=0)
def test__schedule_network_no_new_agents(self):
network = {'id': 'foo_net_id'}
self._test__schedule_network(network,
new_agents=None, existing_agents=[],
expected_casts=0, expected_warnings=1)
def _test__get_enabled_agents(self, network,
agents=None, port_count=0,
expected_warnings=0, expected_errors=0):
self.notifier.plugin.get_ports_count.return_value = port_count
enabled_agents = self.notifier._get_enabled_agents(
mock.ANY, network, agents, mock.ANY, mock.ANY)
if not cfg.CONF.enable_services_on_agents_with_admin_state_down:
agents = [x for x in agents if x.admin_state_up]
self.assertEqual(agents, enabled_agents)
self.assertEqual(expected_warnings, self.mock_log.warning.call_count)
self.assertEqual(expected_errors, self.mock_log.error.call_count)
def test__get_enabled_agents(self):
agent1 = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent1.admin_state_up = True
agent1.heartbeat_timestamp = timeutils.utcnow()
agent2 = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent2.admin_state_up = False
agent2.heartbeat_timestamp = timeutils.utcnow()
network = {'id': 'foo_network_id'}
self._test__get_enabled_agents(network, agents=[agent1])
def test__get_enabled_agents_with_inactive_ones(self):
agent1 = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent1.admin_state_up = True
agent1.heartbeat_timestamp = timeutils.utcnow()
agent2 = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent2.admin_state_up = True
# This is effectively an inactive agent
agent2.heartbeat_timestamp = datetime.datetime(2000, 1, 1, 0, 0)
network = {'id': 'foo_network_id'}
self._test__get_enabled_agents(network,
agents=[agent1, agent2],
expected_warnings=1, expected_errors=0)
def test__get_enabled_agents_with_notification_required(self):
network = {'id': 'foo_network_id', 'subnets': ['foo_subnet_id']}
agent = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent.admin_state_up = False
agent.heartbeat_timestamp = timeutils.utcnow()
self._test__get_enabled_agents(network, [agent], port_count=20,
expected_warnings=0, expected_errors=1)
def test__get_enabled_agents_with_admin_state_down(self):
cfg.CONF.set_override(
'enable_services_on_agents_with_admin_state_down', True)
agent1 = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent1.admin_state_up = True
agent1.heartbeat_timestamp = timeutils.utcnow()
agent2 = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid())
agent2.admin_state_up = False
agent2.heartbeat_timestamp = timeutils.utcnow()
network = {'id': 'foo_network_id'}
self._test__get_enabled_agents(network, agents=[agent1, agent2])
def test__notify_agents_allocate_priority(self):
mock_context = mock.MagicMock()
mock_context.is_admin = True
methods = ['network_create_end', 'network_update_end',
'network_delete_end', 'subnet_create_end',
'subnet_update_end', 'subnet_delete_end',
'port_create_end', 'port_update_end', 'port_delete_end']
with mock.patch.object(self.notifier, '_schedule_network') as f:
with mock.patch.object(self.notifier, '_get_enabled_agents') as g:
for method in methods:
f.return_value = [mock.MagicMock()]
g.return_value = [mock.MagicMock()]
payload = {}
if method.startswith('port'):
payload['port'] = \
{'device_id':
constants.DEVICE_ID_RESERVED_DHCP_PORT}
expected_payload = copy.deepcopy(payload)
expected_payload['priority'] = \
dhcp_rpc_agent_api.METHOD_PRIORITY_MAP.get(method)
self.notifier._notify_agents(mock_context, method, payload,
'fake_network_id')
if method == 'network_delete_end':
self.mock_fanout.assert_called_with(mock.ANY, method,
expected_payload)
elif method != 'network_create_end':
if method == 'port_create_end':
expected_payload['priority'] = \
dhcp_rpc_agent_api.PRIORITY_PORT_CREATE_HIGH
self.mock_cast.assert_called_with(mock.ANY, method,
expected_payload,
mock.ANY, mock.ANY)
def test__notify_agents_fanout_required(self):
self.notifier._notify_agents(mock.ANY,
'network_delete_end',
{}, 'foo_network_id')
self.assertEqual(1, self.mock_fanout.call_count)
def _test__notify_agents_with_function(
self, function, expected_scheduling=0, expected_casts=0):
with mock.patch.object(self.notifier, '_schedule_network') as f:
with mock.patch.object(self.notifier, '_get_enabled_agents') as g:
agent = agent_obj.Agent(mock.ANY, id=uuidutils.generate_uuid(),
host='host', topic='topic')
agent.admin_state_up = True
agent.heartbeat_timestamp = timeutils.utcnow()
g.return_value = [agent]
function()
self.assertEqual(expected_scheduling, f.call_count)
self.assertEqual(expected_casts, self.mock_cast.call_count)
def _test__notify_agents(self, method,
expected_scheduling=0, expected_casts=0,
payload=None):
payload = payload or {'port': {}}
self._test__notify_agents_with_function(
lambda: self.notifier._notify_agents(
mock.Mock(), method, payload, 'foo_network_id'),
expected_scheduling, expected_casts)
def test__notify_agents_cast_required_with_scheduling(self):
self._test__notify_agents('port_create_end',
expected_scheduling=1, expected_casts=1)
def test__notify_agents_cast_required_wo_scheduling_on_port_update(self):
self._test__notify_agents('port_update_end',
expected_scheduling=0, expected_casts=1)
def test__notify_agents_cast_required_with_scheduling_subnet_create(self):
self._test__notify_agents('subnet_create_end',
expected_scheduling=1, expected_casts=1,
payload={'subnet': {}})
def test__notify_agents_cast_required_with_scheduling_segment(self):
network_id = 'foo_network_id'
segment_id = 'foo_segment_id'
subnet = {'subnet': {'segment_id': segment_id}}
segment = {'id': segment_id, 'network_id': network_id,
'hosts': ['host-a']}
self.notifier.plugin.get_network.return_value = {'id': network_id}
segment_sp = mock.Mock()
segment_sp.get_segment.return_value = segment
directory.add_plugin('segments', segment_sp)
self._test__notify_agents('subnet_create_end',
expected_scheduling=1, expected_casts=1,
payload=subnet)
get_agents = self.notifier.plugin.get_dhcp_agents_hosting_networks
get_agents.assert_called_once_with(
mock.ANY, [network_id], hosts=segment['hosts'])
def test__notify_agents_no_action(self):
self._test__notify_agents('network_create_end',
expected_scheduling=0, expected_casts=0)
def test__notify_agents_with_router_interface_add(self):
self._test__notify_agents_with_function(
lambda: self.notifier._after_router_interface_created(
mock.ANY, mock.ANY, mock.ANY, context=mock.Mock(),
port={'id': 'foo_port_id', 'network_id': 'foo_network_id'}),
expected_scheduling=1, expected_casts=1)
def test__notify_agents_with_router_interface_delete(self):
self._test__notify_agents_with_function(
lambda: self.notifier._after_router_interface_deleted(
mock.ANY, mock.ANY, mock.ANY, context=mock.Mock(),
port={'id': 'foo_port_id', 'network_id': 'foo_network_id'}),
expected_scheduling=0, expected_casts=1)
def test__fanout_message(self):
self.notifier._fanout_message(mock.ANY, mock.ANY, mock.ANY)
self.assertEqual(1, self.mock_fanout.call_count)
def test__cast_message(self):
self.notifier._cast_message(mock.ANY, mock.ANY, mock.ANY)
self.assertEqual(1, self.mock_cast.call_count)
def test__native_notification_unsubscribes(self):
self.assertFalse(self.notifier._unsubscribed_resources)
for res in (resources.PORT, resources.NETWORK, resources.SUBNET):
self.notifier._unsubscribed_resources = []
kwargs = {res: {}}
registry.notify(res, events.AFTER_CREATE, self,
context=mock.Mock(), **kwargs)
# don't unsubscribe until all three types are observed
self.assertEqual([], self.notifier._unsubscribed_resources)
registry.notify(res, events.AFTER_UPDATE, self,
context=mock.Mock(), **kwargs)
self.assertEqual([], self.notifier._unsubscribed_resources)
registry.notify(res, events.AFTER_DELETE, self,
context=mock.Mock(), **kwargs)
self.assertEqual([res], self.notifier._unsubscribed_resources)
# after first time, no further unsubscribing should happen
registry.notify(res, events.AFTER_CREATE, self,
context=mock.Mock(), **kwargs)
self.assertEqual([res], self.notifier._unsubscribed_resources)
def test__only_status_changed(self):
p1 = {'id': 1, 'status': 'DOWN', 'updated_at': '10:00:00',
'revision_number': 1}
p2 = dict(p1)
p2['status'] = 'ACTIVE'
p2['revision_number'] = 2
p2['updated_at'] = '10:00:01'
self.assertTrue(self.notifier._only_status_changed(p1, p2))
p2['name'] = 'test'
self.assertFalse(self.notifier._only_status_changed(p1, p2))
p1['name'] = 'test'
self.assertTrue(self.notifier._only_status_changed(p1, p2))
p1['name'] = 'test1'
self.assertFalse(self.notifier._only_status_changed(p1, p2))