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ActiveMQ example source code file (BrokerTestSupport.java)

This example ActiveMQ source code file (BrokerTestSupport.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

activemqdestination, connectioninfo, destinationinfo, exception, exception, io, message, message, messagedispatch, messagedispatch, net, network, removeinfo, sessioninfo, threading, threads, transactionid, transactioninfo, transactioninfo, util

The ActiveMQ BrokerTestSupport.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.broker;

import java.io.ByteArrayOutputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.IOException;
import java.net.URI;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.concurrent.TimeUnit;

import javax.jms.DeliveryMode;
import javax.jms.MessageNotWriteableException;

import org.apache.activemq.CombinationTestSupport;
import org.apache.activemq.broker.region.RegionBroker;
import org.apache.activemq.broker.region.policy.FixedCountSubscriptionRecoveryPolicy;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.broker.region.policy.RoundRobinDispatchPolicy;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.command.ConnectionId;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.DestinationInfo;
import org.apache.activemq.command.LocalTransactionId;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.MessageDispatch;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.RemoveInfo;
import org.apache.activemq.command.SessionInfo;
import org.apache.activemq.command.TransactionId;
import org.apache.activemq.command.TransactionInfo;
import org.apache.activemq.command.XATransactionId;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.usage.SystemUsage;

public class BrokerTestSupport extends CombinationTestSupport {

    /**
     * Setting this to false makes the test run faster but they may be less
     * accurate.
     */
    public static final boolean FAST_NO_MESSAGE_LEFT_ASSERT = System.getProperty("FAST_NO_MESSAGE_LEFT_ASSERT", "true").equals("true");

    protected RegionBroker regionBroker;
    protected BrokerService broker;
    protected long idGenerator;
    protected int msgIdGenerator;
    protected int txGenerator;
    protected int tempDestGenerator;
    protected PersistenceAdapter persistenceAdapter;
    
    protected String queueName = "TEST";

    protected int maxWait = 4000;

    protected SystemUsage memoryManager;

    protected void setUp() throws Exception {
        super.setUp();
        broker = createBroker();
        PolicyMap policyMap = new PolicyMap();
        policyMap.setDefaultEntry(getDefaultPolicy());
        broker.setDestinationPolicy(policyMap);
        broker.start();
    }

    protected PolicyEntry getDefaultPolicy() {
        PolicyEntry policy = new PolicyEntry();
        policy.setDispatchPolicy(new RoundRobinDispatchPolicy());
        policy.setSubscriptionRecoveryPolicy(new FixedCountSubscriptionRecoveryPolicy());
        return policy;
    }

    protected BrokerService createBroker() throws Exception {
        BrokerService broker = BrokerFactory.createBroker(new URI("broker:()/localhost?persistent=false"));
        return broker;
    }

    protected void tearDown() throws Exception {
        broker.stop();
        broker.waitUntilStopped();
        broker = null;
        regionBroker = null;
        persistenceAdapter = null;
        memoryManager = null;
        super.tearDown();
    }

    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 ProducerInfo createProducerInfo(SessionInfo sessionInfo) throws Exception {
        ProducerInfo info = new ProducerInfo(sessionInfo, ++idGenerator);
        return info;
    }

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

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

    protected Message createMessage(ProducerInfo producerInfo, ActiveMQDestination destination) {
        ActiveMQTextMessage message = new ActiveMQTextMessage();
        message.setMessageId(new MessageId(producerInfo, ++msgIdGenerator));
        message.setDestination(destination);
        message.setPersistent(false);
        try {
            message.setText("Test Message Payload.");
        } catch (MessageNotWriteableException e) {
        }
        return message;
    }

    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 void gc() {
        regionBroker.gc();
    }

    protected void profilerPause(String prompt) throws IOException {
        if (System.getProperty("profiler") != null) {
            System.out.println();
            System.out.println(prompt + "> Press enter to continue: ");
            while (System.in.read() != '\n') {
            }
            System.out.println(prompt + "> Done.");
        }
    }

    protected RemoveInfo closeConnectionInfo(ConnectionInfo info) {
        return info.createRemoveCommand();
    }

    protected RemoveInfo closeSessionInfo(SessionInfo info) {
        return info.createRemoveCommand();
    }

    protected RemoveInfo closeProducerInfo(ProducerInfo info) {
        return info.createRemoveCommand();
    }

    protected Message createMessage(ProducerInfo producerInfo, ActiveMQDestination destination, int deliveryMode) {
        Message message = createMessage(producerInfo, destination);
        message.setPersistent(deliveryMode == DeliveryMode.PERSISTENT);
        return message;
    }

    protected LocalTransactionId createLocalTransaction(SessionInfo info) {
        LocalTransactionId id = new LocalTransactionId(info.getSessionId().getParentId(), ++txGenerator);
        return id;
    }

    protected XATransactionId createXATransaction(SessionInfo info) throws IOException {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        DataOutputStream os = new DataOutputStream(baos);
        os.writeLong(++txGenerator);
        os.close();
        byte[] bs = baos.toByteArray();

        XATransactionId xid = new XATransactionId();
        xid.setBranchQualifier(bs);
        xid.setGlobalTransactionId(bs);
        xid.setFormatId(55);
        return xid;
    }

    protected TransactionInfo createBeginTransaction(ConnectionInfo connectionInfo, TransactionId txid) {
        TransactionInfo info = new TransactionInfo(connectionInfo.getConnectionId(), txid, TransactionInfo.BEGIN);
        return info;
    }

    protected TransactionInfo createPrepareTransaction(ConnectionInfo connectionInfo, TransactionId txid) {
        TransactionInfo info = new TransactionInfo(connectionInfo.getConnectionId(), txid, TransactionInfo.PREPARE);
        return info;
    }

    protected TransactionInfo createCommitTransaction1Phase(ConnectionInfo connectionInfo, TransactionId txid) {
        TransactionInfo info = new TransactionInfo(connectionInfo.getConnectionId(), txid, TransactionInfo.COMMIT_ONE_PHASE);
        return info;
    }

    protected TransactionInfo createCommitTransaction2Phase(ConnectionInfo connectionInfo, TransactionId txid) {
        TransactionInfo info = new TransactionInfo(connectionInfo.getConnectionId(), txid, TransactionInfo.COMMIT_TWO_PHASE);
        return info;
    }

    protected TransactionInfo createRollbackTransaction(ConnectionInfo connectionInfo, TransactionId txid) {
        TransactionInfo info = new TransactionInfo(connectionInfo.getConnectionId(), txid, TransactionInfo.ROLLBACK);
        return info;
    }

    protected int countMessagesInQueue(StubConnection connection, ConnectionInfo connectionInfo, ActiveMQDestination destination) throws Exception {

        SessionInfo sessionInfo = createSessionInfo(connectionInfo);
        connection.send(sessionInfo);
        ConsumerInfo consumerInfo = createConsumerInfo(sessionInfo, destination);
        consumerInfo.setPrefetchSize(1);
        consumerInfo.setBrowser(true);
        connection.send(consumerInfo);

        ArrayList<Object> skipped = new ArrayList();

        // Now get the messages.
        Object m = connection.getDispatchQueue().poll(maxWait, TimeUnit.MILLISECONDS);
        int i = 0;
        while (m != null) {
            if (m instanceof MessageDispatch && ((MessageDispatch)m).getConsumerId().equals(consumerInfo.getConsumerId())) {
                MessageDispatch md = (MessageDispatch)m;
                if (md.getMessage() != null) {
                    i++;
                    connection.send(createAck(consumerInfo, md.getMessage(), 1, MessageAck.STANDARD_ACK_TYPE));
                } else {
                    break;
                }
            } else {
                skipped.add(m);
            }
            m = connection.getDispatchQueue().poll(maxWait, TimeUnit.MILLISECONDS);
        }

        for (Iterator<Object> iter = skipped.iterator(); iter.hasNext();) {
            connection.getDispatchQueue().put(iter.next());
        }

        connection.send(closeSessionInfo(sessionInfo));
        return i;

    }

    protected DestinationInfo createTempDestinationInfo(ConnectionInfo connectionInfo, byte destinationType) {
        DestinationInfo info = new DestinationInfo();
        info.setConnectionId(connectionInfo.getConnectionId());
        info.setOperationType(DestinationInfo.ADD_OPERATION_TYPE);
        info.setDestination(ActiveMQDestination.createDestination(info.getConnectionId() + ":" + (++tempDestGenerator), destinationType));
        return info;
    }

    protected ActiveMQDestination createDestinationInfo(StubConnection connection, ConnectionInfo connectionInfo1, byte destinationType) throws Exception {
        if ((destinationType & ActiveMQDestination.TEMP_MASK) != 0) {
            DestinationInfo info = createTempDestinationInfo(connectionInfo1, destinationType);
            connection.send(info);
            return info.getDestination();
        } else {
            return ActiveMQDestination.createDestination(queueName, destinationType);
        }
    }

    protected DestinationInfo closeDestinationInfo(DestinationInfo info) {
        info.setOperationType(DestinationInfo.REMOVE_OPERATION_TYPE);
        info.setTimeout(0);
        return info;
    }

    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();
    }

    protected StubConnection createConnection() throws Exception {
        return new StubConnection(broker);
    }

    /**
     * @param connection
     * @return
     * @throws InterruptedException
     */
    public Message receiveMessage(StubConnection connection) throws InterruptedException {
        return receiveMessage(connection, maxWait);
    }

    public Message receiveMessage(StubConnection connection, long timeout) throws InterruptedException {
        while (true) {
            Object o = connection.getDispatchQueue().poll(timeout, TimeUnit.MILLISECONDS);

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

                MessageDispatch dispatch = (MessageDispatch)o;
                if (dispatch.getMessage() == null) {
                    return null;
                }
                dispatch.setMessage(dispatch.getMessage().copy());
                dispatch.getMessage().setRedeliveryCounter(dispatch.getRedeliveryCounter());
                return dispatch.getMessage();
            }
        }
    };

    protected void assertNoMessagesLeft(StubConnection connection) throws InterruptedException {
        long wait = FAST_NO_MESSAGE_LEFT_ASSERT ? 0 : maxWait;
        while (true) {
            Object o = connection.getDispatchQueue().poll(wait, TimeUnit.MILLISECONDS);
            if (o == null) {
                return;
            }
            if (o instanceof MessageDispatch && ((MessageDispatch)o).getMessage() != null) {
                fail("Received a message: "+((MessageDispatch)o).getMessage().getMessageId());
            }
        }
    }

}

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