117 lines
4.6 KiB
Python
117 lines
4.6 KiB
Python
# Copyright (c) 2014 Red Hat, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_config import cfg
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from neutron._i18n import _
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from neutron.agent.linux import external_process
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from neutron.agent.linux import ip_lib
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from neutron.agent.linux import keepalived
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from neutron.common import utils as common_utils
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from neutron.tests.common import net_helpers
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from neutron.tests.functional.agent.linux import helpers
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from neutron.tests.functional import base
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from neutron.tests.unit.agent.linux import test_keepalived
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class KeepalivedManagerTestCase(base.BaseSudoTestCase,
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test_keepalived.KeepalivedConfBaseMixin):
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def setUp(self):
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super(KeepalivedManagerTestCase, self).setUp()
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cfg.CONF.set_override('check_child_processes_interval', 1, 'AGENT')
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self.expected_config = self._get_config()
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self.process_monitor = external_process.ProcessMonitor(cfg.CONF,
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'router')
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self.namespace = self.useFixture(net_helpers.NamespaceFixture()).name
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self.ip_wrapper = ip_lib.IPWrapper(namespace=self.namespace)
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self._prepare_devices()
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self.manager = keepalived.KeepalivedManager(
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'router1', self.expected_config, self.process_monitor,
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conf_path=cfg.CONF.state_path,
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namespace=self.namespace)
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self.addCleanup(self.manager.disable)
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def _prepare_devices(self):
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# NOTE(slaweq): those are devices used in keepalived config file,
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# prepared by self._get_config() method which is defined in
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# neutron.tests.unit.agent.linux.test_keepalived module
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dev_names = ['eth0', 'eth1', 'eth2', 'eth4', 'eth6', 'eth10']
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for name in dev_names:
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self.ip_wrapper.add_dummy(name)
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def _spawn_keepalived(self, keepalived_manager):
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keepalived_manager.spawn()
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process = keepalived_manager.get_process()
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common_utils.wait_until_true(
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lambda: process.active,
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timeout=5,
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sleep=0.01,
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exception=RuntimeError(_("Keepalived didn't spawn")))
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return process
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def test_keepalived_spawn(self):
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self._spawn_keepalived(self.manager)
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self.assertEqual(self.expected_config.get_config_str(),
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self.manager.get_conf_on_disk())
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def _test_keepalived_respawns(self, normal_exit=True):
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process = self._spawn_keepalived(self.manager)
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pid = process.pid
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exit_code = '-15' if normal_exit else '-9'
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# Exit the process, and see that when it comes back
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# It's indeed a different process
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self.ip_wrapper.netns.execute(['kill', exit_code, pid])
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common_utils.wait_until_true(
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lambda: process.active and pid != process.pid,
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timeout=5,
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sleep=0.01,
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exception=RuntimeError(_("Keepalived didn't respawn")))
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def test_keepalived_respawns(self):
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self._test_keepalived_respawns()
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def test_keepalived_respawn_with_unexpected_exit(self):
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self._test_keepalived_respawns(False)
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def _test_keepalived_spawns_conflicting_pid(self, process, pid_file):
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# Test the situation when keepalived PID file contains PID of an
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# existing non-keepalived process. This situation can happen e.g.
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# after hard node reset.
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spawn_process = helpers.SleepyProcessFixture()
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self.useFixture(spawn_process)
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with open(pid_file, "w") as f_pid_file:
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f_pid_file.write("%s" % spawn_process.pid)
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self._spawn_keepalived(self.manager)
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def test_keepalived_spawns_conflicting_pid_base_process(self):
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process = self.manager.get_process()
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pid_file = process.get_pid_file_name()
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self._test_keepalived_spawns_conflicting_pid(process, pid_file)
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def test_keepalived_spawns_conflicting_pid_vrrp_subprocess(self):
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process = self.manager.get_process()
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pid_file = process.get_pid_file_name()
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self._test_keepalived_spawns_conflicting_pid(
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process,
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self.manager.get_vrrp_pid_file_name(pid_file))
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