157 lines
6.0 KiB
Python
157 lines
6.0 KiB
Python
# Copyright 2013 Red Hat, Inc.
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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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"""
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Tests in this module will be skipped unless:
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- ovsdb-client is installed
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- ovsdb-client can be invoked password-less via the configured root helper
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- sudo testing is enabled (see neutron.tests.functional.base for details)
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"""
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import time
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from oslo_config import cfg
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from neutron.agent.common import ovs_lib
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from neutron.agent.common import ovsdb_monitor
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from neutron.common import utils
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from neutron.tests import base
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from neutron.tests.common import net_helpers
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from neutron.tests.functional.agent.linux import base as linux_base
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class BaseMonitorTest(linux_base.BaseOVSLinuxTestCase):
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def setUp(self):
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super(BaseMonitorTest, self).setUp()
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rootwrap_not_configured = (cfg.CONF.AGENT.root_helper == base.SUDO_CMD)
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if rootwrap_not_configured:
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# The monitor tests require a nested invocation that has
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# to be emulated by double sudo if rootwrap is not
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# configured.
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self.config(group='AGENT',
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root_helper=" ".join([base.SUDO_CMD] * 2))
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self._check_test_requirements()
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# ovsdb-client monitor needs to have a bridge to make any output
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self.useFixture(net_helpers.OVSBridgeFixture())
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def _check_test_requirements(self):
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self.check_command(['ovsdb-client', 'list-dbs'],
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'Exit code: 1',
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'password-less sudo not granted for ovsdb-client',
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run_as_root=True)
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class TestOvsdbMonitor(BaseMonitorTest):
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def setUp(self):
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super(TestOvsdbMonitor, self).setUp()
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self.monitor = ovsdb_monitor.OvsdbMonitor('Bridge')
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self.addCleanup(self.monitor.stop)
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self.monitor.start()
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def collect_monitor_output(self):
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output = list(self.monitor.iter_stdout())
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if output:
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# Output[0] is header row with spaces for column separation.
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# Use 'other_config' as an indication of the table header.
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self.assertIn('other_config', output[0])
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return True
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def test_monitor_generates_initial_output(self):
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utils.wait_until_true(self.collect_monitor_output, timeout=30)
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class TestSimpleInterfaceMonitor(BaseMonitorTest):
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def setUp(self):
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super(TestSimpleInterfaceMonitor, self).setUp()
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self.monitor = ovsdb_monitor.SimpleInterfaceMonitor()
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self.addCleanup(self.monitor.stop)
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self.monitor.start(block=True, timeout=60)
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def test_has_updates(self):
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utils.wait_until_true(lambda: self.monitor.has_updates)
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# clear the event list
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self.monitor.get_events()
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self.useFixture(net_helpers.OVSPortFixture())
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# has_updates after port addition should become True
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utils.wait_until_true(lambda: self.monitor.has_updates is True)
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def _expected_devices_events(self, devices, state):
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"""Helper to check that events are received for expected devices.
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:param devices: The list of expected devices. WARNING: This list
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is modified by this method
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:param state: The state of the devices (added or removed)
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"""
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events = self.monitor.get_events()
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event_devices = [
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(dev['name'], dev['external_ids']) for dev in events.get(state)]
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for dev in event_devices:
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if dev[0] in devices:
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devices.remove(dev[0])
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self.assertEqual(dev[1].get('iface-status'), 'active')
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if not devices:
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return True
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def test_get_events(self):
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utils.wait_until_true(lambda: self.monitor.has_updates)
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devices = self.monitor.get_events()
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self.assertTrue(devices.get('added'),
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'Initial call should always be true')
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br = self.useFixture(net_helpers.OVSBridgeFixture())
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p1 = self.useFixture(net_helpers.OVSPortFixture(br.bridge))
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p2 = self.useFixture(net_helpers.OVSPortFixture(br.bridge))
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added_devices = [p1.port.name, p2.port.name]
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utils.wait_until_true(
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lambda: self._expected_devices_events(added_devices, 'added'))
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br.bridge.delete_port(p1.port.name)
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br.bridge.delete_port(p2.port.name)
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removed_devices = [p1.port.name, p2.port.name]
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utils.wait_until_true(
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lambda: self._expected_devices_events(removed_devices, 'removed'))
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# restart
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self.monitor.stop(block=True)
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# NOTE(slaweq): lets give async process few more seconds to receive
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# "error" from the old ovsdb monitor process and then start new one
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time.sleep(5)
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self.monitor.start(block=True, timeout=60)
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try:
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utils.wait_until_true(
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lambda: self.monitor.get_events().get('added'))
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except utils.WaitTimeout:
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raise AssertionError('Initial call should always be true')
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def test_get_events_includes_ofport(self):
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utils.wait_until_true(lambda: self.monitor.has_updates)
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self.monitor.get_events() # clear initial events
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br = self.useFixture(net_helpers.OVSBridgeFixture())
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p1 = self.useFixture(net_helpers.OVSPortFixture(br.bridge))
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def p1_event_has_ofport():
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if not self.monitor.has_updates:
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return
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for e in self.monitor.new_events['added']:
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if (e['name'] == p1.port.name and
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e['ofport'] != ovs_lib.UNASSIGNED_OFPORT):
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return True
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utils.wait_until_true(p1_event_has_ofport)
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