# -*- encoding: utf-8 -*- # # Copyright © 2013 Red Hat, Inc # # Author: Eoghan Glynn # # 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 ceilometer/alarm/evaluator/threshold.py """ import datetime import mock import uuid from ceilometer.alarm.evaluator import threshold from ceilometer.openstack.common import timeutils from ceilometer.storage import models from ceilometerclient import exc from ceilometerclient.v2 import statistics from tests.alarm.evaluator import base class TestEvaluate(base.TestEvaluatorBase): EVALUATOR = threshold.ThresholdEvaluator def prepare_alarms(self): self.alarms = [ models.Alarm(name='instance_running_hot', description='instance_running_hot', type='threshold', enabled=True, user_id='foobar', project_id='snafu', alarm_id=str(uuid.uuid4()), state='insufficient data', state_timestamp=None, timestamp=None, insufficient_data_actions=[], ok_actions=[], alarm_actions=[], repeat_actions=False, rule=dict( comparison_operator='gt', threshold=80.0, evaluation_periods=5, statistic='avg', period=60, meter_name='cpu_util', query=[{'field': 'meter', 'op': 'eq', 'value': 'cpu_util'}, {'field': 'resource_id', 'op': 'eq', 'value': 'my_instance'}]) ), models.Alarm(name='group_running_idle', description='group_running_idle', type='threshold', enabled=True, user_id='foobar', project_id='snafu', state='insufficient data', state_timestamp=None, timestamp=None, insufficient_data_actions=[], ok_actions=[], alarm_actions=[], repeat_actions=False, alarm_id=str(uuid.uuid4()), rule=dict( comparison_operator='le', threshold=10.0, evaluation_periods=4, statistic='max', period=300, meter_name='cpu_util', query=[{'field': 'meter', 'op': 'eq', 'value': 'cpu_util'}, {'field': 'metadata.user_metadata.AS', 'op': 'eq', 'value': 'my_group'}]) ), ] @staticmethod def _get_stat(attr, value): return statistics.Statistics(None, {attr: value}) def test_retry_transient_api_failure(self): with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): broken = exc.CommunicationError(message='broken') avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] - v) for v in xrange(5)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] + v) for v in xrange(1, 4)] self.api_client.statistics.list.side_effect = [broken, broken, avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('insufficient data') self._evaluate_all_alarms() self._assert_all_alarms('ok') def test_simple_insufficient(self): self._set_all_alarms('ok') with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): self.api_client.statistics.list.return_value = [] self._evaluate_all_alarms() self._assert_all_alarms('insufficient data') expected = [mock.call(alarm.alarm_id, state='insufficient data') for alarm in self.alarms] update_calls = self.api_client.alarms.set_state.call_args_list self.assertEqual(update_calls, expected) expected = [mock.call(alarm, 'ok', ('%d datapoints are unknown' % alarm.rule['evaluation_periods'])) for alarm in self.alarms] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_simple_alarm_trip(self): self._set_all_alarms('ok') with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] + v) for v in xrange(1, 6)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] - v) for v in xrange(4)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('alarm') expected = [mock.call(alarm.alarm_id, state='alarm') for alarm in self.alarms] update_calls = self.api_client.alarms.set_state.call_args_list self.assertEqual(update_calls, expected) reasons = ['Transition to alarm due to 5 samples outside' ' threshold, most recent: 85.0', 'Transition to alarm due to 4 samples outside' ' threshold, most recent: 7.0'] expected = [mock.call(alarm, 'ok', reason) for alarm, reason in zip(self.alarms, reasons)] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_simple_alarm_clear(self): self._set_all_alarms('alarm') with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] - v) for v in xrange(5)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] + v) for v in xrange(1, 5)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('ok') expected = [mock.call(alarm.alarm_id, state='ok') for alarm in self.alarms] update_calls = self.api_client.alarms.set_state.call_args_list self.assertEqual(update_calls, expected) reasons = ['Transition to ok due to 5 samples inside' ' threshold, most recent: 76.0', 'Transition to ok due to 4 samples inside' ' threshold, most recent: 14.0'] expected = [mock.call(alarm, 'alarm', reason) for alarm, reason in zip(self.alarms, reasons)] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_equivocal_from_known_state(self): self._set_all_alarms('ok') with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] + v) for v in xrange(5)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] - v) for v in xrange(-1, 3)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('ok') self.assertEqual(self.api_client.alarms.set_state.call_args_list, []) self.assertEqual(self.notifier.notify.call_args_list, []) def test_equivocal_from_known_state_and_repeat_actions(self): self._set_all_alarms('ok') self.alarms[1].repeat_actions = True with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] + v) for v in xrange(5)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] - v) for v in xrange(-1, 3)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('ok') self.assertEqual(self.api_client.alarms.set_state.call_args_list, []) reason = 'Remaining as ok due to 4 samples inside' \ ' threshold, most recent: 8.0' expected = [mock.call(self.alarms[1], 'ok', reason)] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_unequivocal_from_known_state_and_repeat_actions(self): self._set_all_alarms('alarm') self.alarms[1].repeat_actions = True with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] + v) for v in xrange(1, 6)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] - v) for v in xrange(4)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('alarm') self.assertEqual(self.api_client.alarms.set_state.call_args_list, []) reason = 'Remaining as alarm due to 4 samples outside' \ ' threshold, most recent: 7.0' expected = [mock.call(self.alarms[1], 'alarm', reason)] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_state_change_and_repeat_actions(self): self._set_all_alarms('ok') self.alarms[0].repeat_actions = True self.alarms[1].repeat_actions = True with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] + v) for v in xrange(1, 6)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] - v) for v in xrange(4)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('alarm') expected = [mock.call(alarm.alarm_id, state='alarm') for alarm in self.alarms] update_calls = self.api_client.alarms.set_state.call_args_list self.assertEqual(update_calls, expected) reasons = ['Transition to alarm due to 5 samples outside' ' threshold, most recent: 85.0', 'Transition to alarm due to 4 samples outside' ' threshold, most recent: 7.0'] expected = [mock.call(alarm, 'ok', reason) for alarm, reason in zip(self.alarms, reasons)] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_equivocal_from_unknown(self): self._set_all_alarms('insufficient data') with mock.patch('ceilometerclient.client.get_client', return_value=self.api_client): avgs = [self._get_stat('avg', self.alarms[0].rule['threshold'] + v) for v in xrange(1, 6)] maxs = [self._get_stat('max', self.alarms[1].rule['threshold'] - v) for v in xrange(4)] self.api_client.statistics.list.side_effect = [avgs, maxs] self._evaluate_all_alarms() self._assert_all_alarms('alarm') expected = [mock.call(alarm.alarm_id, state='alarm') for alarm in self.alarms] update_calls = self.api_client.alarms.set_state.call_args_list self.assertEqual(update_calls, expected) reasons = ['Transition to alarm due to 5 samples outside' ' threshold, most recent: 85.0', 'Transition to alarm due to 4 samples outside' ' threshold, most recent: 7.0'] expected = [mock.call(alarm, 'insufficient data', reason) for alarm, reason in zip(self.alarms, reasons)] self.assertEqual(self.notifier.notify.call_args_list, expected) def test_bound_duration(self): timeutils.utcnow.override_time = datetime.datetime(2012, 7, 2, 10, 45) constraint = self.evaluator._bound_duration(self.alarms[0], []) self.assertEqual(constraint, [ {'field': 'timestamp', 'op': 'le', 'value': timeutils.utcnow().isoformat()}, {'field': 'timestamp', 'op': 'ge', 'value': '2012-07-02T10:39:00'}, ])