/**
* 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 java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import javax.jms.Connection;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Queue;
import javax.jms.Session;
import junit.framework.TestCase;
import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.network.NetworkConnector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
public class FailoverClusterTestSupport extends TestCase {
protected final Logger logger = LoggerFactory.getLogger(getClass());
private static final int NUMBER_OF_CLIENTS = 30;
private String clientUrl;
private final Map<String, BrokerService> brokers = new HashMap<String, BrokerService>();
private final List<ActiveMQConnection> connections = new ArrayList<ActiveMQConnection>();
protected void assertClientsConnectedToTwoBrokers() {
Set<String> set = new HashSet<String>();
for (ActiveMQConnection c : connections) {
if (c.getTransportChannel().getRemoteAddress() != null) {
set.add(c.getTransportChannel().getRemoteAddress());
}
}
assertTrue("Only 2 connections should be found: " + set,
set.size() == 2);
}
protected void assertClientsConnectedToThreeBrokers() {
Set<String> set = new HashSet<String>();
for (ActiveMQConnection c : connections) {
if (c.getTransportChannel().getRemoteAddress() != null) {
set.add(c.getTransportChannel().getRemoteAddress());
}
}
assertTrue("Only 3 connections should be found: " + set,
set.size() == 3);
}
protected void assertClientsConnectionsEvenlyDistributed(double minimumPercentage) {
Map<String, Double> clientConnectionCounts = new HashMap<String, Double>();
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 = (double)clientConnectionCounts.get(key);
double percentage = count / (double)total;
logger.info(count + " of " + total + " connections for " + key + " = " + percentage);
assertTrue("Connections distribution expected to be >= than " + minimumPercentage
+ ". Actuall distribution was " + percentage + " for connection " + key,
percentage >= minimumPercentage);
}
}
protected void assertAllConnectedTo(String url) throws Exception {
for (ActiveMQConnection c : connections) {
assertEquals(c.getTransportChannel().getRemoteAddress(), url);
}
}
protected void addBroker(String name, BrokerService brokerService) {
brokers.put(name, brokerService);
}
protected BrokerService getBroker(String name) {
return brokers.get(name);
}
protected void stopBroker(String name) throws Exception {
BrokerService broker = brokers.remove(name);
broker.stop();
broker.waitUntilStopped();
}
protected BrokerService removeBroker(String name) {
return brokers.remove(name);
}
protected void destroyBrokerCluster() throws JMSException, Exception {
for (BrokerService b : brokers.values()) {
try {
b.stop();
b.waitUntilStopped();
} catch (Exception e) {
// Keep on going, we want to try and stop them all.
logger.info("Error while stopping broker["+ b.getBrokerName() +"] continuing...");
}
}
brokers.clear();
}
protected void shutdownClients() throws JMSException {
for (Connection c : connections) {
c.close();
}
}
protected BrokerService createBroker(String brokerName) throws Exception {
BrokerService answer = new BrokerService();
answer.setPersistent(false);
answer.setUseJmx(false);
answer.setBrokerName(brokerName);
answer.setUseShutdownHook(false);
return answer;
}
protected void addTransportConnector(BrokerService brokerService,
String connectorName, String uri, boolean clustered) throws Exception {
TransportConnector connector = brokerService.addConnector(uri);
connector.setName(connectorName);
if (clustered) {
connector.setRebalanceClusterClients(true);
connector.setUpdateClusterClients(true);
connector.setUpdateClusterClientsOnRemove(true);
} else {
connector.setRebalanceClusterClients(false);
connector.setUpdateClusterClients(false);
connector.setUpdateClusterClientsOnRemove(false);
}
}
protected void addNetworkBridge(BrokerService answer, String bridgeName,
String uri, boolean duplex, String destinationFilter) throws Exception {
NetworkConnector network = answer.addNetworkConnector(uri);
network.setName(bridgeName);
network.setDuplex(duplex);
if (destinationFilter != null && !destinationFilter.equals("")) {
network.setDestinationFilter(bridgeName);
}
}
protected void createClients() throws Exception {
createClients(NUMBER_OF_CLIENTS);
}
@SuppressWarnings("unused")
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);
}
}
public String getClientUrl() {
return clientUrl;
}
public void setClientUrl(String clientUrl) {
this.clientUrl = clientUrl;
}
}