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# Copyright 2013 Intel Corporation
# 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.
"""Tests for resource monitors."""
from nova.compute import monitors
from nova import test
class FakeResourceMonitor(monitors.ResourceMonitorBase):
def _update_data(self):
self._data['foo.metric1'] = '1000'
self._data['foo.metric2'] = '99.999'
self._data['timestamp'] = '123'
@monitors.ResourceMonitorBase.add_timestamp
def _get_foo_metric1(self, **kwargs):
return self._data.get("foo.metric1")
@monitors.ResourceMonitorBase.add_timestamp
def _get_foo_metric2(self, **kwargs):
return self._data.get("foo.metric2")
class FakeMonitorClass1(monitors.ResourceMonitorBase):
def get_metrics(self, **kwargs):
data = [{'timestamp': 1232,
'name': 'key1',
'value': 2600,
'source': 'libvirt'}]
return data
def get_metric_names(self):
return ['key1']
class FakeMonitorClass2(monitors.ResourceMonitorBase):
def get_metrics(self, **kwargs):
data = [{'timestamp': 123,
'name': 'key2',
'value': 1600,
'source': 'libvirt'}]
return data
def get_metric_names(self):
return ['key2']
class FakeMonitorClass3(monitors.ResourceMonitorBase):
def get_metrics(self, **kwargs):
data = [{'timestamp': 1234,
'name': 'key1',
'value': 1200,
'source': 'libvirt'}]
return data
def get_metric_names(self):
return ['key1']
class FakeMonitorClass4(monitors.ResourceMonitorBase):
def get_metrics(self, **kwargs):
raise test.TestingException()
def get_metric_names(self):
raise test.TestingException()
class ResourceMonitorBaseTestCase(test.TestCase):
def setUp(self):
super(ResourceMonitorBaseTestCase, self).setUp()
self.monitor = FakeResourceMonitor(None)
def test_get_metric_names(self):
names = self.monitor.get_metric_names()
self.assertEqual(2, len(names))
self.assertIn("foo.metric1", names)
self.assertIn("foo.metric2", names)
def test_get_metrics(self):
metrics_raw = self.monitor.get_metrics()
names = self.monitor.get_metric_names()
metrics = {}
for metric in metrics_raw:
self.assertIn(metric['name'], names)
self.assertEqual(metric["timestamp"], '123')
metrics[metric['name']] = metric['value']
self.assertEqual(metrics["foo.metric1"], '1000')
self.assertEqual(metrics["foo.metric2"], '99.999')
class ResourceMonitorsTestCase(test.TestCase):
"""Test case for monitors."""
def setUp(self):
super(ResourceMonitorsTestCase, self).setUp()
self.monitor_handler = monitors.ResourceMonitorHandler()
fake_monitors = [
'nova.tests.compute.monitors.test_monitors.FakeMonitorClass1',
'nova.tests.compute.monitors.test_monitors.FakeMonitorClass2']
self.flags(compute_available_monitors=fake_monitors)
classes = self.monitor_handler.get_matching_classes(
['nova.compute.monitors.all_monitors'])
self.class_map = {}
for cls in classes:
self.class_map[cls.__name__] = cls
def test_choose_monitors_not_found(self):
self.flags(compute_monitors=['FakeMonitorClass5', 'FakeMonitorClass4'])
monitor_classes = self.monitor_handler.choose_monitors(self)
self.assertEqual(len(monitor_classes), 0)
def test_choose_monitors_bad(self):
self.flags(compute_monitors=['FakeMonitorClass1', 'FakePluginClass3'])
monitor_classes = self.monitor_handler.choose_monitors(self)
self.assertEqual(len(monitor_classes), 1)
def test_choose_monitors(self):
self.flags(compute_monitors=['FakeMonitorClass1', 'FakeMonitorClass2'])
monitor_classes = self.monitor_handler.choose_monitors(self)
self.assertEqual(len(monitor_classes), 2)
def test_choose_monitors_none(self):
self.flags(compute_monitors=[])
monitor_classes = self.monitor_handler.choose_monitors(self)
self.assertEqual(len(monitor_classes), 0)
def test_all_monitors(self):
# Double check at least a couple of known monitors exist
self.assertIn('ComputeDriverCPUMonitor', self.class_map)
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