ActiveMQ example source code file (ClientTestSupport.java)

This example ActiveMQ source code file (ClientTestSupport.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - ActiveMQ tags/keywords

activemqconnectionfactory, activemqconnectionfactory, connectioninfo, consumerinfo, exception, exception, io, ioexception, jmsexception, jmsexception, message, messageack, messageack, messagedispatch, net, network, sessioninfo, threading, threads

The ActiveMQ ClientTestSupport.java source code

/**
 * 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;

import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

import javax.jms.JMSException;

import junit.framework.TestCase;
import org.apache.activemq.broker.Broker;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.StubConnection;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ConnectionId;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageDispatch;
import org.apache.activemq.command.RemoveInfo;
import org.apache.activemq.command.SessionInfo;
import org.apache.activemq.transport.TransportFactory;

public class ClientTestSupport extends TestCase {

    protected BrokerService broker;
    protected long idGenerator;

    private ActiveMQConnectionFactory connFactory;
    private String brokerURL = "vm://localhost?broker.persistent=false";

    public void setUp() throws Exception {
        final AtomicBoolean connected = new AtomicBoolean(false);
        TransportConnector connector;

        // Start up a broker with a tcp connector.
        try {
            broker = BrokerFactory.createBroker(new URI(this.brokerURL));
            String brokerId = broker.getBrokerName();
            connector = new TransportConnector(TransportFactory.bind(new URI(this.brokerURL))) {
                // Hook into the connector so we can assert that the server
                // accepted a connection.
                protected org.apache.activemq.broker.Connection createConnection(org.apache.activemq.transport.Transport transport) throws IOException {
                    connected.set(true);
                    return super.createConnection(transport);
                }
            };
            broker.addConnector(connector);
            broker.start();

        } catch (IOException e) {
            throw new JMSException("Error creating broker " + e);
        } catch (URISyntaxException e) {
            throw new JMSException("Error creating broker " + e);
        }

        URI connectURI;
        connectURI = connector.getServer().getConnectURI();

        // This should create the connection.
        connFactory = new ActiveMQConnectionFactory(connectURI);
    }

    protected void tearDown() throws Exception {
        super.tearDown();
        if (broker != null) {
            broker.stop();
        }
    }

    public ActiveMQConnectionFactory getConnectionFactory() throws JMSException {
        if (this.connFactory == null) {
            throw new JMSException("ActiveMQConnectionFactory is null ");
        }
        return this.connFactory;
    }

    // Helper Classes
    protected ConnectionInfo createConnectionInfo() throws Exception {
        ConnectionInfo info = new ConnectionInfo();
        info.setConnectionId(new ConnectionId("connection:" + (++idGenerator)));
        info.setClientId(info.getConnectionId().getValue());
        return info;
    }

    protected SessionInfo createSessionInfo(ConnectionInfo connectionInfo) throws Exception {
        SessionInfo info = new SessionInfo(connectionInfo, ++idGenerator);
        return info;
    }

    protected ConsumerInfo createConsumerInfo(SessionInfo sessionInfo, ActiveMQDestination destination) throws Exception {
        ConsumerInfo info = new ConsumerInfo(sessionInfo, ++idGenerator);
        info.setBrowser(false);
        info.setDestination(destination);
        info.setPrefetchSize(1000);
        info.setDispatchAsync(false);
        return info;
    }

    protected RemoveInfo closeConsumerInfo(ConsumerInfo consumerInfo) {
        return consumerInfo.createRemoveCommand();
    }

    protected MessageAck createAck(ConsumerInfo consumerInfo, Message msg, int count, byte ackType) {
        MessageAck ack = new MessageAck();
        ack.setAckType(ackType);
        ack.setConsumerId(consumerInfo.getConsumerId());
        ack.setDestination(msg.getDestination());
        ack.setLastMessageId(msg.getMessageId());
        ack.setMessageCount(count);
        return ack;
    }

    protected Message receiveMessage(StubConnection connection, int maxWait) throws InterruptedException {
        while (true) {
            Object o = connection.getDispatchQueue().poll(maxWait, TimeUnit.MILLISECONDS);

            if (o == null) {
                return null;
            }

            if (o instanceof MessageDispatch) {
                MessageDispatch dispatch = (MessageDispatch)o;
                return dispatch.getMessage();
            }
        }
    }

    protected Broker getBroker() throws Exception {
        return this.broker != null ? this.broker.getBroker() : null;
    }

    public static void removeMessageStore() {
        if (System.getProperty("activemq.store.dir") != null) {
            recursiveDelete(new File(System.getProperty("activemq.store.dir")));
        }
        if (System.getProperty("derby.system.home") != null) {
            recursiveDelete(new File(System.getProperty("derby.system.home")));
        }
    }

    public static void recursiveDelete(File f) {
        if (f.isDirectory()) {
            File[] files = f.listFiles();
            for (int i = 0; i < files.length; i++) {
                recursiveDelete(files[i]);
            }
        }
        f.delete();
    }

}