c6cd3a8190
The function _get_agent_params() parse the parameters passed to the agent via kernel cmdline or vmedia. Other parts of the code needs to access these parameters as well, so this patch is moving _get_agent_params() and the related functions to a common place (utils.py). Change-Id: I860f84d1d13511fff56d4aa56358ee597a9760d5
344 lines
13 KiB
Python
344 lines
13 KiB
Python
# Copyright 2013 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import json
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import time
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import mock
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from oslotest import base as test_base
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import pkg_resources
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from stevedore import extension
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from wsgiref import simple_server
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from ironic_python_agent import agent
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from ironic_python_agent import encoding
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from ironic_python_agent import errors
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from ironic_python_agent.extensions import base
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from ironic_python_agent import hardware
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EXPECTED_ERROR = RuntimeError('command execution failed')
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def foo_execute(*args, **kwargs):
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if kwargs['fail']:
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raise EXPECTED_ERROR
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else:
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return 'command execution succeeded'
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class FakeExtension(base.BaseAgentExtension):
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pass
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class TestHeartbeater(test_base.BaseTestCase):
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def setUp(self):
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super(TestHeartbeater, self).setUp()
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self.mock_agent = mock.Mock()
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self.mock_agent.api_url = 'https://fake_api.example.org:8081/'
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self.heartbeater = agent.IronicPythonAgentHeartbeater(self.mock_agent)
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self.heartbeater.api = mock.Mock()
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self.heartbeater.hardware = mock.create_autospec(
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hardware.HardwareManager)
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self.heartbeater.stop_event = mock.Mock()
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@mock.patch('os.read')
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@mock.patch('select.poll')
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@mock.patch('ironic_python_agent.agent._time')
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@mock.patch('random.uniform')
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def test_heartbeat(self, mocked_uniform, mocked_time, mock_poll,
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mock_read):
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time_responses = []
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uniform_responses = []
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heartbeat_responses = []
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poll_responses = []
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expected_poll_calls = []
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# FIRST RUN:
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# initial delay is 0
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expected_poll_calls.append(mock.call(0))
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poll_responses.append(False)
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# next heartbeat due at t=100
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heartbeat_responses.append(100)
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# random interval multiplier is 0.5
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uniform_responses.append(0.5)
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# time is now 50
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time_responses.append(50)
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# SECOND RUN:
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# 50 * .5 = 25
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expected_poll_calls.append(mock.call(1000 * 25.0))
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poll_responses.append(False)
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# next heartbeat due at t=180
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heartbeat_responses.append(180)
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# random interval multiplier is 0.4
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uniform_responses.append(0.4)
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# time is now 80
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time_responses.append(80)
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# THIRD RUN:
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# 50 * .4 = 20
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expected_poll_calls.append(mock.call(1000 * 20.0))
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poll_responses.append(False)
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# this heartbeat attempt fails
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heartbeat_responses.append(Exception('uh oh!'))
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# we check the time to generate a fake deadline, now t=125
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time_responses.append(125)
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# random interval multiplier is 0.5
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uniform_responses.append(0.5)
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# time is now 125.5
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time_responses.append(125.5)
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# FOURTH RUN:
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# 50 * .5 = 25
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expected_poll_calls.append(mock.call(1000 * 25.0))
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# Stop now
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poll_responses.append(True)
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mock_read.return_value = 'a'
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# Hook it up and run it
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mocked_time.side_effect = time_responses
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mocked_uniform.side_effect = uniform_responses
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self.mock_agent.heartbeat_timeout = 50
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self.heartbeater.api.heartbeat.side_effect = heartbeat_responses
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mock_poll.return_value.poll.side_effect = poll_responses
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self.heartbeater.run()
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# Validate expectations
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self.assertEqual(expected_poll_calls,
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mock_poll.return_value.poll.call_args_list)
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self.assertEqual(self.heartbeater.error_delay, 2.7)
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class TestBaseAgent(test_base.BaseTestCase):
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def setUp(self):
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super(TestBaseAgent, self).setUp()
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self.encoder = encoding.RESTJSONEncoder(indent=4)
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self.agent = agent.IronicPythonAgent('https://fake_api.example.'
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'org:8081/',
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('203.0.113.1', 9990),
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('192.0.2.1', 9999),
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3,
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10,
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'eth0',
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300,
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1,
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'agent_ipmitool',
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False)
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self.agent.ext_mgr = extension.ExtensionManager.\
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make_test_instance([extension.Extension('fake', None,
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FakeExtension,
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FakeExtension())])
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def assertEqualEncoded(self, a, b):
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# Evidently JSONEncoder.default() can't handle None (??) so we have to
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# use encode() to generate JSON, then json.loads() to get back a python
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# object.
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a_encoded = self.encoder.encode(a)
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b_encoded = self.encoder.encode(b)
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self.assertEqual(json.loads(a_encoded), json.loads(b_encoded))
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def test_get_status(self):
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started_at = time.time()
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self.agent.started_at = started_at
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status = self.agent.get_status()
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self.assertTrue(isinstance(status, agent.IronicPythonAgentStatus))
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self.assertEqual(status.started_at, started_at)
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self.assertEqual(status.version,
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pkg_resources.get_distribution('ironic-python-agent')
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.version)
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@mock.patch('wsgiref.simple_server.make_server', autospec=True)
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@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
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def test_run(self, mocked_list_hardware, wsgi_server_cls):
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wsgi_server = wsgi_server_cls.return_value
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wsgi_server.start.side_effect = KeyboardInterrupt()
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self.agent.heartbeater = mock.Mock()
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self.agent.api_client.lookup_node = mock.Mock()
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self.agent.api_client.lookup_node.return_value = {
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'node': {
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'uuid': 'deadbeef-dabb-ad00-b105-f00d00bab10c'
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},
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'heartbeat_timeout': 300
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}
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self.agent.run()
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listen_addr = ('192.0.2.1', 9999)
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wsgi_server_cls.assert_called_once_with(
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listen_addr[0],
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listen_addr[1],
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self.agent.api,
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server_class=simple_server.WSGIServer)
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wsgi_server.serve_forever.assert_called_once()
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self.agent.heartbeater.start.assert_called_once_with()
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@mock.patch('os.read')
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@mock.patch('select.poll')
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@mock.patch('time.sleep', return_value=None)
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@mock.patch.object(hardware.GenericHardwareManager,
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'list_network_interfaces')
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@mock.patch.object(hardware.GenericHardwareManager, 'get_ipv4_addr')
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def test_ipv4_lookup(self,
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mock_get_ipv4,
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mock_list_net,
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mock_time_sleep,
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mock_poll,
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mock_read):
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homeless_agent = agent.IronicPythonAgent('https://fake_api.example.'
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'org:8081/',
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(None, 9990),
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('192.0.2.1', 9999),
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3,
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10,
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None,
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300,
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1,
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'agent_ipmitool',
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False)
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mock_poll.return_value.poll.return_value = True
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mock_read.return_value = 'a'
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# Can't find network interfaces, and therefore can't find IP
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mock_list_net.return_value = []
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mock_get_ipv4.return_value = None
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self.assertRaises(errors.LookupAgentInterfaceError,
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homeless_agent.set_agent_advertise_addr)
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# Can look up network interfaces, but not IP. Network interface not
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# set, because no interface yields an IP.
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mock_ifaces = [hardware.NetworkInterface('eth0', '00:00:00:00:00:00'),
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hardware.NetworkInterface('eth1', '00:00:00:00:00:01')]
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mock_list_net.return_value = mock_ifaces
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self.assertRaises(errors.LookupAgentIPError,
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homeless_agent.set_agent_advertise_addr)
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self.assertEqual(6, mock_get_ipv4.call_count)
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self.assertEqual(None, homeless_agent.network_interface)
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# First interface eth0 has no IP, second interface eth1 has an IP
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mock_get_ipv4.side_effect = [None, '1.1.1.1']
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homeless_agent.heartbeater.run()
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self.assertEqual(('1.1.1.1', 9990), homeless_agent.advertise_address)
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self.assertEqual('eth1', homeless_agent.network_interface)
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def test_async_command_success(self):
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result = base.AsyncCommandResult('foo_command', {'fail': False},
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foo_execute)
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expected_result = {
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'id': result.id,
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'command_name': 'foo_command',
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'command_params': {
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'fail': False,
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},
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'command_status': 'RUNNING',
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'command_result': None,
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'command_error': None,
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}
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self.assertEqualEncoded(result, expected_result)
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result.start()
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result.join()
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expected_result['command_status'] = 'SUCCEEDED'
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expected_result['command_result'] = {'result': ('foo_command: command '
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'execution succeeded')}
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self.assertEqualEncoded(result, expected_result)
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def test_async_command_failure(self):
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result = base.AsyncCommandResult('foo_command', {'fail': True},
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foo_execute)
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expected_result = {
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'id': result.id,
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'command_name': 'foo_command',
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'command_params': {
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'fail': True,
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},
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'command_status': 'RUNNING',
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'command_result': None,
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'command_error': None,
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}
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self.assertEqualEncoded(result, expected_result)
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result.start()
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result.join()
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expected_result['command_status'] = 'FAILED'
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expected_result['command_error'] = errors.CommandExecutionError(
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str(EXPECTED_ERROR))
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self.assertEqualEncoded(result, expected_result)
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def test_get_node_uuid(self):
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self.agent.node = {'uuid': 'fake-node'}
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self.assertEqual('fake-node', self.agent.get_node_uuid())
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def test_get_node_uuid_unassociated(self):
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self.assertRaises(errors.UnknownNodeError,
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self.agent.get_node_uuid)
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def test_get_node_uuid_invalid_node(self):
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self.agent.node = {}
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self.assertRaises(errors.UnknownNodeError,
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self.agent.get_node_uuid)
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class TestAgentStandalone(test_base.BaseTestCase):
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def setUp(self):
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super(TestAgentStandalone, self).setUp()
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self.agent = agent.IronicPythonAgent('https://fake_api.example.'
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'org:8081/',
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('203.0.113.1', 9990),
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('192.0.2.1', 9999),
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3,
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10,
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'eth0',
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300,
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1,
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'agent_ipmitool',
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True)
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@mock.patch('wsgiref.simple_server.make_server', autospec=True)
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@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
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def test_run(self, mocked_list_hardware, wsgi_server_cls):
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wsgi_server = wsgi_server_cls.return_value
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wsgi_server.start.side_effect = KeyboardInterrupt()
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self.agent.heartbeater = mock.Mock()
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self.agent.api_client.lookup_node = mock.Mock()
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self.agent.api_client.lookup_node.return_value = {
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'node': {
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'uuid': 'deadbeef-dabb-ad00-b105-f00d00bab10c'
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},
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'heartbeat_timeout': 300
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}
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self.agent.run()
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listen_addr = ('192.0.2.1', 9999)
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wsgi_server_cls.assert_called_once_with(
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listen_addr[0],
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listen_addr[1],
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self.agent.api,
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server_class=simple_server.WSGIServer)
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wsgi_server.serve_forever.assert_called_once()
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self.assertFalse(self.agent.heartbeater.called)
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self.assertFalse(self.agent.api_client.lookup_node.called)
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