Add tests for routers

This patch adds basic tests for router, like:
* test if router's internal IPv4 address is reachable from VM,
* test if router's internal IPv6 address is reachable from VM,
* test if external gateway IP address is reachable from VM,
* test if router is scheduled on proper number of L3 agents (if
  agents scheduler extension is available)
* test if qrouter- namespaces are created properly on hosts where
  router is scheduled (if agents scheduler extension is available)

To make those tests, additional method for neutron client is added to
list l3 agents hosting given router.

Change-Id: I1ce358eb7a48c1343f626f6bee01d9b26f79473f
This commit is contained in:
Slawek Kaplonski 2019-10-02 21:31:37 +00:00
parent ebbfbf4337
commit ee8e4d9491
3 changed files with 157 additions and 0 deletions

View File

@ -35,6 +35,7 @@ get_network = _client.get_network
get_router = _client.get_router
get_port = _client.get_port
get_subnet = _client.get_subnet
list_agents_hosting_router = _client.list_agents_hosting_router
new_ipv4_cidr = _cidr.new_ipv4_cidr
new_ipv6_cidr = _cidr.new_ipv6_cidr

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@ -144,3 +144,11 @@ def get_router(router, client=None, **params):
def get_subnet(subnet, client=None, **params):
return neutron_client(client).show_subnet(subnet, **params)['subnet']
def list_agents_hosting_router(router, client=None, **params):
agents = neutron_client(client).list_l3_agent_hosting_routers(
router, **params)
if isinstance(agents, collections.Mapping):
agents = agents['agents']
return tobiko.select(agents)

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@ -0,0 +1,148 @@
# Copyright (c) 2019 Red Hat
# All Rights Reserved.
#
# 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.
from __future__ import absolute_import
import testtools
import tobiko
from tobiko import config
from tobiko.shell import ping
from tobiko.shell import sh
from tobiko.openstack import neutron
from tobiko.openstack import stacks
from tobiko.openstack import topology
from tobiko.tripleo import topology as tripleo_topology
CONF = config.CONF
class LegacyRouterTest(testtools.TestCase):
"""Test Neutron routers"""
#: Resources stack with Nova server to send messages to
stack = tobiko.required_setup_fixture(stacks.CirrosServerStackFixture)
def setUp(self):
super(LegacyRouterTest, self).setUp()
if not self.stack.network_stack.has_gateway:
tobiko.skip('Stack {!s} has no gateway',
self.stack.network_stack.stack_name)
self.router = self.stack.network_stack.gateway_details
self.router_ipv4_address = neutron.find_port_ip_address(
port=self.stack.network_stack.ipv4_gateway_port_details,
ip_version=4)
self.router_ipv6_address = neutron.find_port_ip_address(
port=self.stack.network_stack.ipv6_gateway_port_details,
ip_version=6)
self.router_gw_ip = self.router['external_gateway_info'][
'external_fixed_ips'][0]['ip_address']
tripleo_topology.setup_tripleo_topology()
self.topology = topology.get_openstack_topology()
def test_internal_router_ipv4_interface_is_reachable(self):
if not self.stack.network_stack.has_ipv4:
tobiko.skip('Stack {!s} has no ipv4 subnet',
self.stack.network_stack.stack_name)
ping.ping(
self.router_ipv4_address,
ssh_client=self.stack.ssh_client
).assert_replied()
def test_internal_router_ipv6_interface_is_reachable(self):
if not self.stack.network_stack.has_ipv6:
tobiko.skip('Stack {!s} has no ipv6 subnet',
self.stack.network_stack.stack_name)
ping.ping(
self.router_ipv6_address,
ssh_client=self.stack.ssh_client
).assert_replied()
def test_router_gateway_is_reachable(self):
ping.ping(
self.router_gw_ip,
ssh_client=self.stack.ssh_client
).assert_replied()
@neutron.skip_if_missing_networking_extensions('l3_agent_scheduler')
def test_router_is_scheduled_on_l3_agents(self):
self._test_router_is_scheduled_on_l3_agents()
def _get_l3_agent_nodes(self, hostname):
hostname = hostname.split(".")
for host in self.topology.nodes:
if host.name in hostname:
return host
self.fail("Node with hostname %s not found in cloud topology" %
hostname)
def _check_routers_namespace_on_host(self, hostname, state="master"):
router_namespace = "qrouter-%s" % self.router['id']
agent_host = self._get_l3_agent_nodes(hostname)
ns_list = sh.execute(
"sudo ip netns list", ssh_client=agent_host.ssh_client)
self.assertIn(router_namespace, ns_list.stdout)
ns_net_config = sh.execute(
"sudo ip netns exec %s ip -o addr" % router_namespace,
ssh_client=agent_host.ssh_client)
if state == "master":
self.assertIn(
str(self.router_ipv4_address), ns_net_config.stdout)
self.assertIn(
str(self.router_ipv6_address), ns_net_config.stdout)
self.assertIn(
str(self.router_gw_ip), ns_net_config.stdout)
else:
self.assertNotIn(
str(self.router_ipv4_address), ns_net_config.stdout)
self.assertNotIn(
str(self.router_ipv6_address), ns_net_config.stdout)
self.assertNotIn(
str(self.router_gw_ip), ns_net_config.stdout)
def _test_router_is_scheduled_on_l3_agents(self):
router_agents = neutron.list_agents_hosting_router(self.router['id'])
self.assertEqual(1, len(router_agents))
self._check_routers_namespace_on_host(router_agents[0]['host'])
@neutron.skip_if_missing_networking_extensions('l3-ha')
class HaRouterTest(LegacyRouterTest):
"""Test Neutron HA routers"""
#: Resources stack with Nova server to send messages to
stack = tobiko.required_setup_fixture(stacks.L3haServerStackFixture)
def setUp(self):
l3_agents = neutron.list_agents(agent_type="L3 agent")
if len(l3_agents) < 2:
neutron_extensions = neutron.get_networking_extensions()
if "l3_agent_scheduler" in neutron_extensions:
tobiko.skip("Ha router tests requires at least 2 L3 agents in "
"the cloud.")
super(HaRouterTest, self).setUp()
def _test_router_is_scheduled_on_l3_agents(self):
router_agents = neutron.list_agents_hosting_router(self.router['id'])
master_agents = [
agent for agent in router_agents if agent['ha_state'] == 'active']
backup_agents = [
agent for agent in router_agents if agent['ha_state'] == 'standby']
self.assertEqual(1, len(master_agents))
self.assertGreaterEqual(len(backup_agents), 1)
self._check_routers_namespace_on_host(master_agents[0]['host'])
for backup_agent in backup_agents:
self._check_routers_namespace_on_host(
backup_agent['host'], state="backup")