/**
* 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 javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.Session;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.concurrent.TimeUnit;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.artemis.core.config.Configuration;
import org.apache.activemq.artemis.jms.server.config.impl.JMSConfigurationImpl;
import org.apache.activemq.artemis.jms.server.embedded.EmbeddedJMS;
import org.apache.activemq.broker.artemiswrapper.OpenwireArtemisBaseTest;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class TwoBrokerFailoverClusterTest extends OpenwireArtemisBaseTest {
private static final int NUMBER_OF_CLIENTS = 30;
private final List<ActiveMQConnection> connections = new ArrayList<>();
private EmbeddedJMS server0;
private EmbeddedJMS server1;
private String clientUrl;
@Test
public void testTwoBrokersRestart() throws Exception {
Thread.sleep(2000);
createClients();
Thread.sleep(5000);
assertClientsConnectedToTwoBrokers();
assertClientsConnectionsEvenlyDistributed(.35);
server0.stop();
Assert.assertTrue(server1.waitClusterForming(100, TimeUnit.MILLISECONDS, 20, 1));
Thread.sleep(1000);
assertAllConnectedTo(newURI("127.0.0.1", 1));
Thread.sleep(5000);
server0.start();
Assert.assertTrue(server0.waitClusterForming(100, TimeUnit.MILLISECONDS, 20, 2));
Assert.assertTrue(server1.waitClusterForming(100, TimeUnit.MILLISECONDS, 20, 2));
Thread.sleep(5000);
//need update-cluster-clients, -on-remove and rebalance set to true.
assertClientsConnectedToTwoBrokers();
assertClientsConnectionsEvenlyDistributed(.35);
}
@Before
public void setUp() throws Exception {
HashMap<String, String> map = new HashMap<>();
map.put("rebalanceClusterClients", "true");
map.put("updateClusterClients", "true");
map.put("updateClusterClientsOnRemove", "true");
Configuration config0 = createConfig("127.0.0.1", 0, map);
Configuration config1 = createConfig("127.0.0.1", 1, map);
deployClusterConfiguration(config0, 1);
deployClusterConfiguration(config1, 0);
server0 = new EmbeddedJMS().setConfiguration(config0).setJmsConfiguration(new JMSConfigurationImpl());
server1 = new EmbeddedJMS().setConfiguration(config1).setJmsConfiguration(new JMSConfigurationImpl());
clientUrl = "failover://(" + newURI("127.0.0.1", 0) + "," + newURI("127.0.0.1", 1) + ")";
server0.start();
server1.start();
Assert.assertTrue(server0.waitClusterForming(100, TimeUnit.MILLISECONDS, 20, 2));
Assert.assertTrue(server1.waitClusterForming(100, TimeUnit.MILLISECONDS, 20, 2));
}
@After
public void tearDown() throws Exception {
for (ActiveMQConnection conn : connections) {
conn.close();
}
server0.stop();
server1.stop();
}
protected void createClients() throws Exception {
createClients(NUMBER_OF_CLIENTS);
}
protected void createClients(int numOfClients) throws Exception {
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(clientUrl);
for (int i = 0; i < numOfClients; i++) {
ActiveMQConnection c = (ActiveMQConnection) factory.createConnection();
c.start();
Session s = c.createSession(false, Session.AUTO_ACKNOWLEDGE);
Queue queue = s.createQueue(getClass().getName());
MessageConsumer consumer = s.createConsumer(queue);
connections.add(c);
}
}
protected void assertClientsConnectedToTwoBrokers() {
Set<String> set = new HashSet<>();
for (ActiveMQConnection c : connections) {
if (c.getTransportChannel().getRemoteAddress() != null) {
set.add(c.getTransportChannel().getRemoteAddress());
}
}
Assert.assertTrue("Only 2 connections should be found: " + set, set.size() == 2);
}
protected void assertClientsConnectionsEvenlyDistributed(double minimumPercentage) {
Map<String, Double> clientConnectionCounts = new HashMap<>();
int total = 0;
for (ActiveMQConnection c : connections) {
String key = c.getTransportChannel().getRemoteAddress();
if (key != null) {
total++;
if (clientConnectionCounts.containsKey(key)) {
double count = clientConnectionCounts.get(key);
count += 1.0;
clientConnectionCounts.put(key, count);
} else {
clientConnectionCounts.put(key, 1.0);
}
}
}
Set<String> keys = clientConnectionCounts.keySet();
for (String key : keys) {
double count = clientConnectionCounts.get(key);
double percentage = count / total;
System.out.println(count + " of " + total + " connections for " + key + " = " + percentage);
Assert.assertTrue("Connections distribution expected to be >= than " + minimumPercentage + ". Actual distribution was " + percentage + " for connection " + key, percentage >= minimumPercentage);
}
}
protected void assertAllConnectedTo(String url) throws Exception {
for (ActiveMQConnection c : connections) {
Assert.assertEquals(url, c.getTransportChannel().getRemoteAddress());
}
}
}