/**
* 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.alerts;
import static junit.framework.Assert.assertEquals;
import static org.easymock.EasyMock.createNiceMock;
import static org.easymock.EasyMock.expect;
import static org.easymock.EasyMock.replay;
import static org.easymock.EasyMock.verify;
import java.lang.reflect.Field;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.persistence.EntityManager;
import org.apache.ambari.server.events.AlertEvent;
import org.apache.ambari.server.events.AlertReceivedEvent;
import org.apache.ambari.server.events.MockEventListener;
import org.apache.ambari.server.events.publishers.AlertEventPublisher;
import org.apache.ambari.server.orm.DBAccessor;
import org.apache.ambari.server.orm.dao.AlertDefinitionDAO;
import org.apache.ambari.server.orm.entities.AlertDefinitionEntity;
import org.apache.ambari.server.state.Alert;
import org.apache.ambari.server.state.AlertState;
import org.apache.ambari.server.state.Cluster;
import org.apache.ambari.server.state.Clusters;
import org.apache.ambari.server.state.Host;
import org.apache.ambari.server.state.HostState;
import org.apache.ambari.server.state.stack.OsFamily;
import org.easymock.EasyMock;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import com.google.common.eventbus.EventBus;
import com.google.inject.Binder;
import com.google.inject.Guice;
import com.google.inject.Injector;
import com.google.inject.Module;
/**
* Tests {@link AgentHeartbeatAlertRunnable}.
*/
public class AgentHeartbeatAlertRunnableTest {
private final static long CLUSTER_ID = 1;
private final static String CLUSTER_NAME = "c1";
private final static String HOSTNAME = "c6401.ambari.apache.org";
private final static String DEFINITION_NAME = "ambari_server_agent_heartbeat";
private final static String DEFINITION_SERVICE = "AMBARI";
private final static String DEFINITION_COMPONENT = "AMBARI_SERVER";
private final static String DEFINITION_LABEL = "Mock Definition";
private Clusters m_clusters;
private Cluster m_cluster;
private Host m_host;
private Injector m_injector;
private AlertDefinitionDAO m_definitionDao;
private AlertDefinitionEntity m_definition;
private MockEventListener m_listener;
private AlertEventPublisher m_eventPublisher;
private EventBus m_synchronizedBus;
/**
*
*/
@Before
public void setup() throws Exception {
m_injector = Guice.createInjector(new MockModule());
m_definitionDao = m_injector.getInstance(AlertDefinitionDAO.class);
m_clusters = m_injector.getInstance(Clusters.class);
m_cluster = m_injector.getInstance(Cluster.class);
m_eventPublisher = m_injector.getInstance(AlertEventPublisher.class);
m_listener = m_injector.getInstance(MockEventListener.class);
m_definition = EasyMock.createNiceMock(AlertDefinitionEntity.class);
m_host = EasyMock.createNiceMock(Host.class);
// !!! need a synchronous op for testing
m_synchronizedBus = new EventBus();
Field field = AlertEventPublisher.class.getDeclaredField("m_eventBus");
field.setAccessible(true);
field.set(m_eventPublisher, m_synchronizedBus);
// register mock listener
m_synchronizedBus.register(m_listener);
// create the cluster map
Map<String,Cluster> clusterMap = new HashMap<>();
clusterMap.put(CLUSTER_NAME, m_cluster);
// create the host map
Map<String, Host> hostMap = new HashMap<>();
hostMap.put(HOSTNAME, m_host);
// mock the definition for the alert
expect(m_definition.getDefinitionName()).andReturn(DEFINITION_NAME).atLeastOnce();
expect(m_definition.getServiceName()).andReturn(DEFINITION_SERVICE).atLeastOnce();
expect(m_definition.getComponentName()).andReturn(DEFINITION_COMPONENT).atLeastOnce();
expect(m_definition.getLabel()).andReturn(DEFINITION_LABEL).atLeastOnce();
expect(m_definition.getEnabled()).andReturn(true).atLeastOnce();
// mock the host state
expect(m_host.getState()).andReturn(HostState.HEALTHY);
// mock the cluster
expect(m_cluster.getClusterId()).andReturn(CLUSTER_ID).atLeastOnce();
expect(m_cluster.getClusterName()).andReturn(CLUSTER_NAME).atLeastOnce();
expect(m_cluster.getHosts()).andReturn(Collections.singleton(m_host)).atLeastOnce();
// mock clusters
expect(m_clusters.getClusters()).andReturn(clusterMap).atLeastOnce();
// mock the definition DAO
expect(m_definitionDao.findByName(CLUSTER_ID, DEFINITION_NAME)).andReturn(
m_definition).atLeastOnce();
EasyMock.replay(m_definition, m_host, m_cluster, m_clusters,
m_definitionDao);
}
/**
* @throws Exception
*/
@After
public void teardown() throws Exception {
}
@Test
public void testHealthyHostAlert(){
// precondition that no events were fired
assertEquals(0,
m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// instantiate and inject mocks
AgentHeartbeatAlertRunnable runnable = new AgentHeartbeatAlertRunnable(
m_definition.getDefinitionName());
m_injector.injectMembers(runnable);
// run the alert
runnable.run();
assertEquals(1,
m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
List<AlertEvent> events = m_listener.getAlertEventInstances(AlertReceivedEvent.class);
assertEquals(1, events.size());
AlertReceivedEvent event = (AlertReceivedEvent) events.get(0);
Alert alert = event.getAlert();
assertEquals("AMBARI", alert.getService());
assertEquals("AMBARI_SERVER", alert.getComponent());
assertEquals(AlertState.OK, alert.getState());
assertEquals(DEFINITION_NAME, alert.getName());
verify(m_definition, m_host, m_cluster, m_clusters,
m_definitionDao);
}
@Test
public void testLostHeartbeatAlert() {
EasyMock.reset(m_host);
expect(m_host.getState()).andReturn(HostState.HEARTBEAT_LOST).atLeastOnce();
replay(m_host);
// precondition that no events were fired
assertEquals(0,
m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// instantiate and inject mocks
AgentHeartbeatAlertRunnable runnable = new AgentHeartbeatAlertRunnable(
m_definition.getDefinitionName());
m_injector.injectMembers(runnable);
// run the alert
runnable.run();
assertEquals(1,
m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
List<AlertEvent> events = m_listener.getAlertEventInstances(AlertReceivedEvent.class);
assertEquals(1, events.size());
AlertReceivedEvent event = (AlertReceivedEvent) events.get(0);
Alert alert = event.getAlert();
assertEquals("AMBARI", alert.getService());
assertEquals("AMBARI_SERVER", alert.getComponent());
assertEquals(AlertState.CRITICAL, alert.getState());
assertEquals(DEFINITION_NAME, alert.getName());
verify(m_definition, m_host, m_cluster, m_clusters, m_definitionDao);
}
@Test
public void testUnhealthyHostAlert() {
EasyMock.reset(m_host);
expect(m_host.getState()).andReturn(HostState.UNHEALTHY).atLeastOnce();
replay(m_host);
// precondition that no events were fired
assertEquals(0,
m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
// instantiate and inject mocks
AgentHeartbeatAlertRunnable runnable = new AgentHeartbeatAlertRunnable(
m_definition.getDefinitionName());
m_injector.injectMembers(runnable);
// run the alert
runnable.run();
assertEquals(1,
m_listener.getAlertEventReceivedCount(AlertReceivedEvent.class));
List<AlertEvent> events = m_listener.getAlertEventInstances(AlertReceivedEvent.class);
assertEquals(1, events.size());
AlertReceivedEvent event = (AlertReceivedEvent) events.get(0);
Alert alert = event.getAlert();
assertEquals("AMBARI", alert.getService());
assertEquals("AMBARI_SERVER", alert.getComponent());
assertEquals(AlertState.CRITICAL, alert.getState());
assertEquals(DEFINITION_NAME, alert.getName());
verify(m_definition, m_host, m_cluster, m_clusters, m_definitionDao);
}
/**
*
*/
private class MockModule implements Module {
/**
*
*/
@Override
public void configure(Binder binder) {
Cluster cluster = EasyMock.createNiceMock(Cluster.class);
binder.bind(Clusters.class).toInstance(createNiceMock(Clusters.class));
binder.bind(OsFamily.class).toInstance(createNiceMock(OsFamily.class));
binder.bind(DBAccessor.class).toInstance(createNiceMock(DBAccessor.class));
binder.bind(Cluster.class).toInstance(cluster);
binder.bind(AlertDefinitionDAO.class).toInstance(createNiceMock(AlertDefinitionDAO.class));
binder.bind(EntityManager.class).toInstance(createNiceMock(EntityManager.class));
}
}
}