# Copyright 2013 Rackspace, 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 socket
import time
import mock
from oslo_concurrency import processutils
from oslo_config import cfg
from oslo_serialization import jsonutils
from oslotest import base as test_base
import pkg_resources
from stevedore import extension
from wsgiref import simple_server
from ironic_python_agent import agent
from ironic_python_agent import encoding
from ironic_python_agent import errors
from ironic_python_agent.extensions import base
from ironic_python_agent import hardware
from ironic_python_agent import inspector
from ironic_python_agent import netutils
from ironic_python_agent import utils
EXPECTED_ERROR = RuntimeError('command execution failed')
CONF = cfg.CONF
def foo_execute(*args, **kwargs):
if kwargs['fail']:
raise EXPECTED_ERROR
else:
return 'command execution succeeded'
[docs]class FakeExtension(base.BaseAgentExtension):
pass
[docs]class TestHeartbeater(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestHeartbeater, self).setUp()
self.mock_agent = mock.Mock()
self.mock_agent.api_url = 'https://fake_api.example.org:8081/'
self.heartbeater = agent.IronicPythonAgentHeartbeater(self.mock_agent)
self.heartbeater.api = mock.Mock()
self.heartbeater.hardware = mock.create_autospec(
hardware.HardwareManager)
self.heartbeater.stop_event = mock.Mock()
@mock.patch('os.read')
@mock.patch('select.poll')
@mock.patch('ironic_python_agent.agent._time')
@mock.patch('random.uniform')
[docs] def test_heartbeat(self, mock_uniform, mock_time, mock_poll, mock_read):
time_responses = []
uniform_responses = []
heartbeat_responses = []
poll_responses = []
expected_poll_calls = []
# FIRST RUN:
# initial delay is 0
expected_poll_calls.append(mock.call(0))
poll_responses.append(False)
# next heartbeat due at t=100
heartbeat_responses.append(100)
# random interval multiplier is 0.5
uniform_responses.append(0.5)
# time is now 50
time_responses.append(50)
# SECOND RUN:
# 50 * .5 = 25
expected_poll_calls.append(mock.call(1000 * 25.0))
poll_responses.append(False)
# next heartbeat due at t=180
heartbeat_responses.append(180)
# random interval multiplier is 0.4
uniform_responses.append(0.4)
# time is now 80
time_responses.append(80)
# THIRD RUN:
# 50 * .4 = 20
expected_poll_calls.append(mock.call(1000 * 20.0))
poll_responses.append(False)
# this heartbeat attempt fails
heartbeat_responses.append(Exception('uh oh!'))
# we check the time to generate a fake deadline, now t=125
time_responses.append(125)
# random interval multiplier is 0.5
uniform_responses.append(0.5)
# time is now 125.5
time_responses.append(125.5)
# FOURTH RUN:
# 50 * .5 = 25
expected_poll_calls.append(mock.call(1000 * 25.0))
# Stop now
poll_responses.append(True)
mock_read.return_value = 'a'
# Hook it up and run it
mock_time.side_effect = time_responses
mock_uniform.side_effect = uniform_responses
self.mock_agent.heartbeat_timeout = 50
self.heartbeater.api.heartbeat.side_effect = heartbeat_responses
mock_poll.return_value.poll.side_effect = poll_responses
self.heartbeater.run()
# Validate expectations
self.assertEqual(expected_poll_calls,
mock_poll.return_value.poll.call_args_list)
self.assertEqual(2.7, self.heartbeater.error_delay)
@mock.patch.object(hardware.GenericHardwareManager, '_wait_for_disks',
lambda self: None)
[docs]class TestBaseAgent(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestBaseAgent, self).setUp()
self.encoder = encoding.RESTJSONEncoder(indent=4)
self.agent = agent.IronicPythonAgent('https://fake_api.example.'
'org:8081/',
agent.Host('203.0.113.1', 9990),
agent.Host('192.0.2.1', 9999),
3,
10,
'eth0',
300,
1,
False)
self.agent.ext_mgr = extension.ExtensionManager.\
make_test_instance([extension.Extension('fake', None,
FakeExtension,
FakeExtension())])
self.sample_nw_iface = hardware.NetworkInterface(
"eth9", "AA:BB:CC:DD:EE:FF", "1.2.3.4", True)
[docs] def assertEqualEncoded(self, a, b):
# Evidently JSONEncoder.default() can't handle None (??) so we have to
# use encode() to generate JSON, then json.loads() to get back a python
# object.
a_encoded = self.encoder.encode(a)
b_encoded = self.encoder.encode(b)
self.assertEqual(jsonutils.loads(a_encoded),
jsonutils.loads(b_encoded))
[docs] def test_get_status(self):
started_at = time.time()
self.agent.started_at = started_at
status = self.agent.get_status()
self.assertIsInstance(status, agent.IronicPythonAgentStatus)
self.assertEqual(started_at, status.started_at)
self.assertEqual(pkg_resources.get_distribution('ironic-python-agent')
.version, status.version)
@mock.patch.object(agent.IronicPythonAgent,
'_wait_for_interface')
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
@mock.patch('wsgiref.simple_server.make_server', autospec=True)
[docs] def test_run(self, mock_make_server, mock_dispatch, mock_wait):
CONF.set_override('inspection_callback_url', '', enforce_type=True)
wsgi_server = mock_make_server.return_value
wsgi_server.start.side_effect = KeyboardInterrupt()
self.agent.heartbeater = mock.Mock()
self.agent.api_client.lookup_node = mock.Mock()
self.agent.api_client.lookup_node.return_value = {
'node': {
'uuid': 'deadbeef-dabb-ad00-b105-f00d00bab10c'
},
'config': {
'heartbeat_timeout': 300
}
}
self.agent.run()
listen_addr = agent.Host('192.0.2.1', 9999)
mock_make_server.assert_called_once_with(
listen_addr.hostname,
listen_addr.port,
self.agent.api,
server_class=simple_server.WSGIServer)
wsgi_server.serve_forever.assert_called_once_with()
mock_wait.assert_called_once_with()
mock_dispatch.assert_called_once_with("list_hardware_info")
self.agent.heartbeater.start.assert_called_once_with()
@mock.patch.object(agent.IronicPythonAgent,
'_wait_for_interface')
@mock.patch.object(inspector, 'inspect', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
@mock.patch('wsgiref.simple_server.make_server', autospec=True)
@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
[docs] def test_run_with_inspection(self, mock_list_hardware, mock_make_server,
mock_dispatch, mock_inspector, mock_wait):
CONF.set_override('inspection_callback_url', 'http://foo/bar',
enforce_type=True)
wsgi_server = mock_make_server.return_value
wsgi_server.start.side_effect = KeyboardInterrupt()
mock_inspector.return_value = 'uuid'
self.agent.heartbeater = mock.Mock()
self.agent.api_client.lookup_node = mock.Mock()
self.agent.api_client.lookup_node.return_value = {
'node': {
'uuid': 'deadbeef-dabb-ad00-b105-f00d00bab10c'
},
'config': {
'heartbeat_timeout': 300,
}
}
self.agent.run()
listen_addr = agent.Host('192.0.2.1', 9999)
mock_make_server.assert_called_once_with(
listen_addr.hostname,
listen_addr.port,
self.agent.api,
server_class=simple_server.WSGIServer)
wsgi_server.serve_forever.assert_called_once_with()
mock_inspector.assert_called_once_with()
self.assertEqual(1, self.agent.api_client.lookup_node.call_count)
self.assertEqual(
'uuid',
self.agent.api_client.lookup_node.call_args[1]['node_uuid'])
mock_wait.assert_called_once_with()
mock_dispatch.assert_called_once_with("list_hardware_info")
self.agent.heartbeater.start.assert_called_once_with()
@mock.patch.object(agent.IronicPythonAgent,
'_wait_for_interface')
@mock.patch.object(inspector, 'inspect', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
@mock.patch('wsgiref.simple_server.make_server', autospec=True)
@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
[docs] def test_run_with_inspection_without_apiurl(self,
mock_list_hardware,
mock_make_server,
mock_dispatch,
mock_inspector,
mock_wait):
# If inspection_callback_url is configured and api_url is not when the
# agent starts, ensure that the inspection will be called and wsgi
# server will work as usual. Also, make sure api_client and heartbeater
# will not be initialized in this case.
CONF.set_override('inspection_callback_url', 'http://foo/bar',
enforce_type=True)
self.agent = agent.IronicPythonAgent(None,
agent.Host('203.0.113.1', 9990),
agent.Host('192.0.2.1', 9999),
3,
10,
'eth0',
300,
1,
False)
self.assertFalse(hasattr(self.agent, 'api_client'))
self.assertFalse(hasattr(self.agent, 'heartbeater'))
wsgi_server = mock_make_server.return_value
wsgi_server.start.side_effect = KeyboardInterrupt()
self.agent.run()
listen_addr = agent.Host('192.0.2.1', 9999)
mock_make_server.assert_called_once_with(
listen_addr.hostname,
listen_addr.port,
self.agent.api,
server_class=simple_server.WSGIServer)
wsgi_server.serve_forever.assert_called_once_with()
mock_inspector.assert_called_once_with()
self.assertFalse(mock_wait.called)
self.assertFalse(mock_dispatch.called)
@mock.patch.object(agent.IronicPythonAgent,
'_wait_for_interface')
@mock.patch.object(inspector, 'inspect', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
@mock.patch('wsgiref.simple_server.make_server', autospec=True)
@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
[docs] def test_run_without_inspection_and_apiurl(self,
mock_list_hardware,
mock_make_server,
mock_dispatch,
mock_inspector,
mock_wait):
# If both api_url and inspection_callback_url are not configured when
# the agent starts, ensure that the inspection will be skipped and wsgi
# server will work as usual. Also, make sure api_client and heartbeater
# will not be initialized in this case.
CONF.set_override('inspection_callback_url', None,
enforce_type=True)
self.agent = agent.IronicPythonAgent(None,
agent.Host('203.0.113.1', 9990),
agent.Host('192.0.2.1', 9999),
3,
10,
'eth0',
300,
1,
False)
self.assertFalse(hasattr(self.agent, 'api_client'))
self.assertFalse(hasattr(self.agent, 'heartbeater'))
wsgi_server = mock_make_server.return_value
wsgi_server.start.side_effect = KeyboardInterrupt()
self.agent.run()
listen_addr = agent.Host('192.0.2.1', 9999)
mock_make_server.assert_called_once_with(
listen_addr.hostname,
listen_addr.port,
self.agent.api,
server_class=simple_server.WSGIServer)
wsgi_server.serve_forever.assert_called_once_with()
self.assertFalse(mock_inspector.called)
self.assertFalse(mock_wait.called)
self.assertFalse(mock_dispatch.called)
@mock.patch.object(time, 'time', autospec=True)
@mock.patch.object(time, 'sleep', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
[docs] def test__wait_for_interface(self, mock_dispatch, mock_sleep, mock_time):
mock_dispatch.return_value = [self.sample_nw_iface, {}]
mock_time.return_value = 10
self.agent._wait_for_interface()
mock_dispatch.assert_called_once_with('list_network_interfaces')
self.assertFalse(mock_sleep.called)
@mock.patch.object(time, 'time', autospec=True)
@mock.patch.object(time, 'sleep', autospec=True)
@mock.patch.object(hardware, 'dispatch_to_managers', autospec=True)
[docs] def test__wait_for_interface_expired(self, mock_dispatch, mock_sleep,
mock_time):
mock_time.side_effect = [10, 11, 20, 25, 30]
mock_dispatch.side_effect = [[], [], [self.sample_nw_iface], {}]
expected_sleep_calls = [mock.call(agent.NETWORK_WAIT_RETRY)] * 2
expected_dispatch_calls = [mock.call("list_network_interfaces")] * 3
self.agent._wait_for_interface()
mock_dispatch.assert_has_calls(expected_dispatch_calls)
mock_sleep.assert_has_calls(expected_sleep_calls)
@mock.patch('ironic_python_agent.hardware_managers.cna._detect_cna_card',
autospec=True)
@mock.patch.object(time, 'sleep', autospec=True)
@mock.patch.object(agent.IronicPythonAgent, '_wait_for_interface',
autospec=True)
@mock.patch('wsgiref.simple_server.make_server', autospec=True)
@mock.patch.object(hardware, '_check_for_iscsi', autospec=True)
@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
[docs] def test_run_with_sleep(self, mock_check_for_iscsi, mock_list_hardware,
mock_make_server, mock_wait, mock_sleep,
mock_cna):
CONF.set_override('inspection_callback_url', '', enforce_type=True)
wsgi_server = mock_make_server.return_value
wsgi_server.start.side_effect = KeyboardInterrupt()
self.agent.hardware_initialization_delay = 10
self.agent.heartbeater = mock.Mock()
self.agent.api_client.lookup_node = mock.Mock()
self.agent.api_client.lookup_node.return_value = {
'node': {
'uuid': 'deadbeef-dabb-ad00-b105-f00d00bab10c'
},
'config': {
'heartbeat_timeout': 300
}
}
mock_cna.return_value = False
self.agent.run()
listen_addr = agent.Host('192.0.2.1', 9999)
mock_make_server.assert_called_once_with(
listen_addr.hostname,
listen_addr.port,
self.agent.api,
server_class=simple_server.WSGIServer)
wsgi_server.serve_forever.assert_called_once_with()
self.agent.heartbeater.start.assert_called_once_with()
mock_sleep.assert_called_once_with(10)
self.assertTrue(mock_check_for_iscsi.called)
[docs] def test_async_command_success(self):
result = base.AsyncCommandResult('foo_command', {'fail': False},
foo_execute)
expected_result = {
'id': result.id,
'command_name': 'foo_command',
'command_params': {
'fail': False,
},
'command_status': 'RUNNING',
'command_result': None,
'command_error': None,
}
self.assertEqualEncoded(expected_result, result)
result.start()
result.join()
expected_result['command_status'] = 'SUCCEEDED'
expected_result['command_result'] = {'result': ('foo_command: command '
'execution succeeded')}
self.assertEqualEncoded(expected_result, result)
[docs] def test_async_command_failure(self):
result = base.AsyncCommandResult('foo_command', {'fail': True},
foo_execute)
expected_result = {
'id': result.id,
'command_name': 'foo_command',
'command_params': {
'fail': True,
},
'command_status': 'RUNNING',
'command_result': None,
'command_error': None,
}
self.assertEqualEncoded(expected_result, result)
result.start()
result.join()
expected_result['command_status'] = 'FAILED'
expected_result['command_error'] = errors.CommandExecutionError(
str(EXPECTED_ERROR))
self.assertEqualEncoded(expected_result, result)
[docs] def test_get_node_uuid(self):
self.agent.node = {'uuid': 'fake-node'}
self.assertEqual('fake-node', self.agent.get_node_uuid())
[docs] def test_get_node_uuid_unassociated(self):
self.assertRaises(errors.UnknownNodeError,
self.agent.get_node_uuid)
[docs] def test_get_node_uuid_invalid_node(self):
self.agent.node = {}
self.assertRaises(errors.UnknownNodeError,
self.agent.get_node_uuid)
@mock.patch.object(utils, 'execute', autospec=True)
[docs] def test_get_route_source_ipv4(self, mock_execute):
mock_execute.return_value = ('XXX src 1.2.3.4 XXX\n cache', None)
source = self.agent._get_route_source('XXX')
self.assertEqual('1.2.3.4', source)
@mock.patch.object(utils, 'execute', autospec=True)
[docs] def test_get_route_source_ipv6(self, mock_execute):
mock_execute.return_value = ('XXX src 1:2::3:4 metric XXX\n cache',
None)
source = self.agent._get_route_source('XXX')
self.assertEqual('1:2::3:4', source)
@mock.patch.object(agent, 'LOG', autospec=True)
@mock.patch.object(utils, 'execute', autospec=True)
[docs] def test_get_route_source_indexerror(self, mock_execute, mock_log):
mock_execute.return_value = ('XXX src \n cache', None)
source = self.agent._get_route_source('XXX')
self.assertIsNone(source)
mock_log.warning.assert_called_once()
@mock.patch.object(hardware.GenericHardwareManager, '_wait_for_disks',
lambda self: None)
[docs]class TestAgentStandalone(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestAgentStandalone, self).setUp()
self.agent = agent.IronicPythonAgent('https://fake_api.example.'
'org:8081/',
agent.Host(hostname='203.0.113.1',
port=9990),
agent.Host(hostname='192.0.2.1',
port=9999),
3,
10,
'eth0',
300,
1,
'agent_ipmitool',
True)
@mock.patch('wsgiref.simple_server.make_server', autospec=True)
@mock.patch.object(hardware.HardwareManager, 'list_hardware_info')
[docs] def test_run(self, mock_list_hardware, mock_make_server):
wsgi_server = mock_make_server.return_value
wsgi_server.start.side_effect = KeyboardInterrupt()
self.agent.heartbeater = mock.Mock()
self.agent.api_client.lookup_node = mock.Mock()
self.agent.api_client.lookup_node.return_value = {
'node': {
'uuid': 'deadbeef-dabb-ad00-b105-f00d00bab10c'
},
'config': {
'heartbeat_timeout': 300
}
}
self.agent.run()
listen_addr = agent.Host('192.0.2.1', 9999)
mock_make_server.assert_called_once_with(
listen_addr.hostname,
listen_addr.port,
self.agent.api,
server_class=simple_server.WSGIServer)
wsgi_server.serve_forever.assert_called_once_with()
self.assertFalse(self.agent.heartbeater.called)
self.assertFalse(self.agent.api_client.lookup_node.called)
@mock.patch.object(hardware, '_check_for_iscsi', lambda: None)
@mock.patch.object(hardware.GenericHardwareManager, '_wait_for_disks',
lambda self: None)
@mock.patch.object(socket, 'gethostbyname', autospec=True)
@mock.patch.object(utils, 'execute', autospec=True)
[docs]class TestAdvertiseAddress(test_base.BaseTestCase):
[docs] def setUp(self):
super(TestAdvertiseAddress, self).setUp()
self.agent = agent.IronicPythonAgent(
api_url='https://fake_api.example.org:8081/',
advertise_address=agent.Host(None, 9990),
listen_address=agent.Host('0.0.0.0', 9999),
ip_lookup_attempts=5,
ip_lookup_sleep=10,
network_interface=None,
lookup_timeout=300,
lookup_interval=1,
standalone=False)
[docs] def test_advertise_address_provided(self, mock_exec, mock_gethostbyname):
self.agent.advertise_address = agent.Host('1.2.3.4', 9990)
self.agent.set_agent_advertise_addr()
self.assertEqual(('1.2.3.4', 9990), self.agent.advertise_address)
self.assertFalse(mock_exec.called)
self.assertFalse(mock_gethostbyname.called)
@mock.patch.object(netutils, 'get_ipv4_addr',
autospec=True)
@mock.patch('ironic_python_agent.hardware_managers.cna._detect_cna_card',
autospec=True)
[docs] def test_with_network_interface(self, mock_cna, mock_get_ipv4, mock_exec,
mock_gethostbyname):
self.agent.network_interface = 'em1'
mock_get_ipv4.return_value = '1.2.3.4'
mock_cna.return_value = False
self.agent.set_agent_advertise_addr()
self.assertEqual(agent.Host('1.2.3.4', 9990),
self.agent.advertise_address)
mock_get_ipv4.assert_called_once_with('em1')
self.assertFalse(mock_exec.called)
self.assertFalse(mock_gethostbyname.called)
@mock.patch.object(netutils, 'get_ipv4_addr',
autospec=True)
@mock.patch('ironic_python_agent.hardware_managers.cna._detect_cna_card',
autospec=True)
[docs] def test_with_network_interface_failed(self, mock_cna, mock_get_ipv4,
mock_exec, mock_gethostbyname):
self.agent.network_interface = 'em1'
mock_get_ipv4.return_value = None
mock_cna.return_value = False
self.assertRaises(errors.LookupAgentIPError,
self.agent.set_agent_advertise_addr)
mock_get_ipv4.assert_called_once_with('em1')
self.assertFalse(mock_exec.called)
self.assertFalse(mock_gethostbyname.called)
[docs] def test_route_with_ip(self, mock_exec, mock_gethostbyname):
self.agent.api_url = 'http://1.2.1.2:8081/v1'
mock_gethostbyname.side_effect = socket.gaierror()
mock_exec.return_value = (
"""1.2.1.2 via 192.168.122.1 dev eth0 src 192.168.122.56
cache """,
""
)
self.agent.set_agent_advertise_addr()
self.assertEqual(('192.168.122.56', 9990),
self.agent.advertise_address)
mock_exec.assert_called_once_with('ip', 'route', 'get', '1.2.1.2')
mock_gethostbyname.assert_called_once_with('1.2.1.2')
[docs] def test_route_with_ipv6(self, mock_exec, mock_gethostbyname):
self.agent.api_url = 'http://[fc00:1111::1]:8081/v1'
mock_gethostbyname.side_effect = socket.gaierror()
mock_exec.return_value = (
"""fc00:101::1 dev br-ctlplane src fc00:101::4 metric 0
cache """,
""
)
self.agent.set_agent_advertise_addr()
self.assertEqual(('fc00:101::4', 9990),
self.agent.advertise_address)
mock_exec.assert_called_once_with('ip', 'route', 'get', 'fc00:1111::1')
mock_gethostbyname.assert_called_once_with('fc00:1111::1')
[docs] def test_route_with_host(self, mock_exec, mock_gethostbyname):
mock_gethostbyname.return_value = '1.2.1.2'
mock_exec.return_value = (
"""1.2.1.2 via 192.168.122.1 dev eth0 src 192.168.122.56
cache """,
""
)
self.agent.set_agent_advertise_addr()
self.assertEqual(('192.168.122.56', 9990),
self.agent.advertise_address)
mock_exec.assert_called_once_with('ip', 'route', 'get', '1.2.1.2')
mock_gethostbyname.assert_called_once_with('fake_api.example.org')
@mock.patch.object(time, 'sleep', autospec=True)
[docs] def test_route_retry(self, mock_sleep, mock_exec, mock_gethostbyname):
mock_gethostbyname.return_value = '1.2.1.2'
mock_exec.side_effect = [
processutils.ProcessExecutionError('boom'),
(
"Error: some error text",
""
),
(
"""1.2.1.2 via 192.168.122.1 dev eth0 src 192.168.122.56
cache """,
""
)
]
self.agent.set_agent_advertise_addr()
self.assertEqual(('192.168.122.56', 9990),
self.agent.advertise_address)
mock_exec.assert_called_with('ip', 'route', 'get', '1.2.1.2')
mock_gethostbyname.assert_called_once_with('fake_api.example.org')
mock_sleep.assert_called_with(10)
self.assertEqual(3, mock_exec.call_count)
self.assertEqual(2, mock_sleep.call_count)
@mock.patch.object(time, 'sleep', autospec=True)
[docs] def test_route_failed(self, mock_sleep, mock_exec, mock_gethostbyname):
mock_gethostbyname.return_value = '1.2.1.2'
mock_exec.side_effect = processutils.ProcessExecutionError('boom')
self.assertRaises(errors.LookupAgentIPError,
self.agent.set_agent_advertise_addr)
mock_exec.assert_called_with('ip', 'route', 'get', '1.2.1.2')
mock_gethostbyname.assert_called_once_with('fake_api.example.org')
self.assertEqual(5, mock_exec.call_count)
self.assertEqual(5, mock_sleep.call_count)