/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
package org.apache.ambari.server.state.alerts;
import javax.persistence.EntityManager;
import org.apache.ambari.server.H2DatabaseCleaner;
import org.apache.ambari.server.events.AlertReceivedEvent;
import org.apache.ambari.server.events.AlertStateChangeEvent;
import org.apache.ambari.server.events.MockEventListener;
import org.apache.ambari.server.events.listeners.alerts.AlertAggregateListener;
import org.apache.ambari.server.orm.GuiceJpaInitializer;
import org.apache.ambari.server.orm.InMemoryDefaultTestModule;
import org.apache.ambari.server.orm.dao.AlertSummaryDTO;
import org.apache.ambari.server.orm.dao.AlertsDAO;
import org.apache.ambari.server.orm.entities.AlertCurrentEntity;
import org.apache.ambari.server.orm.entities.AlertHistoryEntity;
import org.apache.ambari.server.state.Alert;
import org.apache.ambari.server.state.AlertFirmness;
import org.apache.ambari.server.state.alert.AggregateDefinitionMapping;
import org.apache.ambari.server.state.alert.AggregateSource;
import org.apache.ambari.server.state.alert.AlertDefinition;
import org.apache.ambari.server.state.alert.Reporting;
import org.apache.ambari.server.state.alert.Reporting.ReportTemplate;
import org.apache.ambari.server.utils.EventBusSynchronizer;
import org.easymock.EasyMock;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.inject.Binder;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Module;
import com.google.inject.util.Modules;
import junit.framework.Assert;
/**
* Tests the {@link AlertAggregateListener}.
*/
@Category({ category.AlertTest.class})
public class AggregateAlertListenerTest {
private Injector m_injector;
private MockEventListener m_listener;
private AlertsDAO m_alertsDao;
private AggregateDefinitionMapping m_aggregateMapping;
/**
*
*/
@Before
public void setup() throws Exception {
m_injector = Guice.createInjector(Modules.override(
new InMemoryDefaultTestModule()).with(new MockModule()));
m_injector.getInstance(GuiceJpaInitializer.class);
m_listener = m_injector.getInstance(MockEventListener.class);
m_alertsDao = m_injector.getInstance(AlertsDAO.class);
// !!! need a synchronous op for testing
EventBusSynchronizer.synchronizeAlertEventPublisher(m_injector).register(m_listener);
EventBusSynchronizer.synchronizeAmbariEventPublisher(m_injector).register(m_listener);
}
/**
* @throws Exception
*/
@After
public void teardown() throws Exception {
H2DatabaseCleaner.clearDatabase(m_injector.getProvider(EntityManager.class).get());
m_injector = null;
}
/**
* Tests that the {@link AlertAggregateListener} caches values of the
* aggregates and only triggers events when needed.
*
* @throws Exception
*/
@Test
public void testAlertNoticeCreationFromEvent() throws Exception {
AlertDefinition aggregateDefinition = getAggregateAlertDefinition();
AlertCurrentEntity currentEntityMock = EasyMock.createNiceMock(AlertCurrentEntity.class);
AlertHistoryEntity historyEntityMock = EasyMock.createNiceMock(AlertHistoryEntity.class);
EasyMock.expect(currentEntityMock.getAlertHistory()).andReturn(historyEntityMock).atLeastOnce();
EasyMock.expect(
m_aggregateMapping.getAggregateDefinition(EasyMock.anyLong(), EasyMock.eq("mock-alert"))).andReturn(
aggregateDefinition).atLeastOnce();
AlertSummaryDTO summaryDTO = new AlertSummaryDTO(5,0,0,0,0);
EasyMock.expect(
m_alertsDao.findAggregateCounts(EasyMock.anyLong(), EasyMock.eq("mock-aggregate-alert"))).andReturn(
summaryDTO).atLeastOnce();
EasyMock.replay(m_alertsDao, m_aggregateMapping, currentEntityMock);
// check that we're starting at 0
Assert.assertEquals(0, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// trigger an alert which will trigger the aggregate
Alert alert = new Alert("mock-alert", null, null, null, null, null);
AlertAggregateListener aggregateListener = m_injector.getInstance(AlertAggregateListener.class);
AlertStateChangeEvent event = new AlertStateChangeEvent(0, alert, currentEntityMock, null,
AlertFirmness.HARD);
aggregateListener.onAlertStateChangeEvent(event);
// verify that one AlertReceivedEvent was fired (it's the one the listener
// creates for the aggregate)
Assert.assertEquals(1, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// fire the same alert event again; the cache in the aggregate listener
// should prevent it from firing a new alert received event of its own
aggregateListener.onAlertStateChangeEvent(event);
// check that we're still at 1
Assert.assertEquals(1, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// now change the returned summary DTO so that a new alert will get generated
summaryDTO.setOkCount(0);
summaryDTO.setCriticalCount(5);
aggregateListener.onAlertStateChangeEvent(event);
Assert.assertEquals(2, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
}
/**
* Tests that the {@link AlertAggregateListener} disregards
* {@link AlertFirmness#SOFT} alerts.
*
* @throws Exception
*/
@Test
public void testNoAggregateCalculationOnSoftAlert() throws Exception {
AlertDefinition aggregateDefinition = getAggregateAlertDefinition();
AlertCurrentEntity currentEntityMock = EasyMock.createNiceMock(AlertCurrentEntity.class);
AlertHistoryEntity historyEntityMock = EasyMock.createNiceMock(AlertHistoryEntity.class);
EasyMock.expect(currentEntityMock.getAlertHistory()).andReturn(historyEntityMock).atLeastOnce();
EasyMock.expect(currentEntityMock.getFirmness()).andReturn(AlertFirmness.SOFT).atLeastOnce();
EasyMock.expect(m_aggregateMapping.getAggregateDefinition(EasyMock.anyLong(),
EasyMock.eq("mock-alert"))).andReturn(aggregateDefinition).atLeastOnce();
AlertSummaryDTO summaryDTO = new AlertSummaryDTO(5, 0, 0, 0, 0);
EasyMock.expect(m_alertsDao.findAggregateCounts(EasyMock.anyLong(),
EasyMock.eq("mock-aggregate-alert"))).andReturn(summaryDTO).atLeastOnce();
EasyMock.replay(m_alertsDao, m_aggregateMapping, currentEntityMock);
// check that we're starting at 0
Assert.assertEquals(0, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// trigger an alert which would normally trigger the aggregate, except that
// the alert will be SOFT and should not cause a recalculation
Alert alert = new Alert("mock-alert", null, null, null, null, null);
AlertAggregateListener aggregateListener = m_injector.getInstance(AlertAggregateListener.class);
AlertStateChangeEvent event = new AlertStateChangeEvent(0, alert, currentEntityMock, null,
AlertFirmness.HARD);
aggregateListener.onAlertStateChangeEvent(event);
// ensure that the aggregate listener did not trigger an alert in response
// to the SOFT alert
Assert.assertEquals(0, m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
}
/**
* Gets a mocked {@link AlertDefinition}.
*
* @return
*/
private AlertDefinition getAggregateAlertDefinition() {
// setup the mocks for the aggregate definition to avoid NPEs
AlertDefinition aggregateDefinition = new AlertDefinition();
aggregateDefinition.setName("mock-aggregate-alert");
AggregateSource aggregateSource = new AggregateSource();
aggregateSource.setAlertName("mock-aggregate-alert");
Reporting reporting = new Reporting();
ReportTemplate criticalTemplate = new ReportTemplate();
ReportTemplate okTemplate = new ReportTemplate();
criticalTemplate.setValue(.05);
criticalTemplate.setText("CRITICAL");
okTemplate.setText("OK");
reporting.setCritical(criticalTemplate);
reporting.setWarning(criticalTemplate);
reporting.setOk(okTemplate);
aggregateSource.setReporting(reporting);
aggregateDefinition.setSource(aggregateSource);
return aggregateDefinition;
}
/**
*
*/
private class MockModule implements Module {
/**
* {@inheritDoc}
*/
@Override
public void configure(Binder binder) {
m_alertsDao = EasyMock.createMock(AlertsDAO.class);
m_aggregateMapping = EasyMock.createMock(AggregateDefinitionMapping.class);
binder.bind(AlertsDAO.class).toInstance(m_alertsDao);
binder.bind(AggregateDefinitionMapping.class).toInstance(m_aggregateMapping);
}
}
}