/**
* 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.activemq.transport.failover;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.io.IOException;
import java.net.URI;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportFactory;
import org.apache.activemq.transport.TransportListener;
import org.apache.activemq.util.Wait;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FailoverTransportBackupsTest {
private static final Logger LOG = LoggerFactory.getLogger(FailoverTransportBackupsTest.class);
protected Transport transport;
protected FailoverTransport failoverTransport;
private int commandsReceived;
private int exceptionReceived;
private int transportInterruptions;
private int transportResumptions;
BrokerService broker1;
BrokerService broker2;
BrokerService broker3;
@Before
public void setUp() throws Exception {
broker1 = createBroker("1");
broker2 = createBroker("2");
broker3 = createBroker("3");
broker1.start();
broker2.start();
broker3.start();
broker1.waitUntilStarted();
broker2.waitUntilStarted();
broker3.waitUntilStarted();
// Reset stats
commandsReceived = 0;
exceptionReceived = 0;
transportInterruptions = 0;
transportResumptions = 0;
}
@After
public void tearDown() throws Exception {
if (transport != null) {
transport.stop();
}
broker1.stop();
broker1.waitUntilStopped();
broker2.stop();
broker2.waitUntilStopped();
broker3.stop();
broker3.waitUntilStopped();
}
@Test
public void testBackupsAreCreated() throws Exception {
this.transport = createTransport(2);
assertNotNull(failoverTransport);
assertTrue(failoverTransport.isBackup());
assertEquals(2, failoverTransport.getBackupPoolSize());
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 2;
}
}));
}
@Test
public void testFailoverToBackups() throws Exception {
this.transport = createTransport(2);
assertNotNull(failoverTransport);
assertTrue(failoverTransport.isBackup());
assertEquals(2, failoverTransport.getBackupPoolSize());
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 2;
}
}));
broker1.stop();
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 1;
}
}));
assertTrue("Incorrect number of Transport interruptions", transportInterruptions >= 1);
assertTrue("Incorrect number of Transport resumptions", transportResumptions >= 1);
broker2.stop();
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 0;
}
}));
assertTrue("Incorrect number of Transport interruptions", transportInterruptions >= 2);
assertTrue("Incorrect number of Transport resumptions", transportResumptions >= 2);
}
@Test
public void testBackupsRefilled() throws Exception {
this.transport = createTransport(1);
assertNotNull(failoverTransport);
assertTrue(failoverTransport.isBackup());
assertEquals(1, failoverTransport.getBackupPoolSize());
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 1;
}
}));
broker1.stop();
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 1;
}
}));
broker2.stop();
assertTrue("Timed out waiting for Backups to connect.", Wait.waitFor(new Wait.Condition(){
public boolean isSatisified() throws Exception {
LOG.debug("Current Backup Count = " + failoverTransport.getCurrentBackups());
return failoverTransport.getCurrentBackups() == 0;
}
}));
}
private BrokerService createBroker(String name) throws Exception {
BrokerService bs = new BrokerService();
bs.setBrokerName(name);
bs.setUseJmx(false);
bs.setPersistent(false);
bs.addConnector("tcp://localhost:0");
return bs;
}
protected Transport createTransport(int backups) throws Exception {
String connectionUri = "failover://("+
broker1.getTransportConnectors().get(0).getPublishableConnectString() + "," +
broker2.getTransportConnectors().get(0).getPublishableConnectString() + "," +
broker3.getTransportConnectors().get(0).getPublishableConnectString() + ")";
if (backups > 0) {
connectionUri += "?randomize=false&backup=true&backupPoolSize=" + backups;
}
Transport transport = TransportFactory.connect(new URI(connectionUri));
transport.setTransportListener(new TransportListener() {
public void onCommand(Object command) {
LOG.debug("Test Transport Listener received Command: " + command);
commandsReceived++;
}
public void onException(IOException error) {
LOG.debug("Test Transport Listener received Exception: " + error);
exceptionReceived++;
}
public void transportInterupted() {
transportInterruptions++;
LOG.debug("Test Transport Listener records transport Interrupted: " + transportInterruptions);
}
public void transportResumed() {
transportResumptions++;
LOG.debug("Test Transport Listener records transport Resumed: " + transportResumptions);
}
});
transport.start();
this.failoverTransport = transport.narrow(FailoverTransport.class);
return transport;
}
}