activemq-unit-tests/src/test/java/org/apache/activemq/bugs/AMQ6264Test.java

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 * 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
 *
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 * distributed under the License is distributed on an "AS IS" BASIS,
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 * See the License for the specific language governing permissions and
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package org.apache.activemq.bugs;

import static org.junit.Assert.assertNotNull;

import java.util.UUID;

import javax.jms.BytesMessage;
import javax.jms.Connection;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.Topic;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.advisory.AdvisorySupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.command.ActiveMQDestination;
import org.junit.After;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestName;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AMQ6264Test {

    private static final Logger LOG = LoggerFactory.getLogger(AMQ6264Test.class);

    @Rule
    public final TestName testName = new TestName();

    protected final int MESSAGE_COUNT = 2000;

    private final String topicPrefix = "topic.";
    private final String topicFilter = topicPrefix + ">";
    private final String topicA = "topic.A";

    private BrokerService broker;
    private Connection connection;
    private String connectionURI;

    @Test(timeout = 60000)
    public void testSlowConsumerAdvisory() throws Exception {
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic(topicFilter);
        MessageConsumer consumer = session.createDurableSubscriber(topic, testName.getMethodName());
        assertNotNull(consumer);

        Topic advisoryTopic = AdvisorySupport.getSlowConsumerAdvisoryTopic(
            ActiveMQDestination.createDestination(topicA, ActiveMQDestination.TOPIC_TYPE));
        session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        MessageConsumer advisoryConsumer = session.createConsumer(advisoryTopic);

        // start throwing messages at the consumer one for an ongoing series of
        // matching topics for the subscription's filter.
        MessageProducer producer = session.createProducer(null);

        // Send one to the destination where we want a matching advisory
        producer.send(session.createTopic(topicA), session.createMessage());

        for (int i = 0; i < MESSAGE_COUNT; i++) {
            BytesMessage m = session.createBytesMessage();
            m.writeBytes(new byte[1024]);
            Topic newTopic = session.createTopic(topicPrefix + UUID.randomUUID().toString());
            LOG.debug("Sending message to next topic: {}", newTopic);
            producer.send(newTopic, m);
        }

        Message msg = advisoryConsumer.receive(1000);
        assertNotNull(msg);
    }

    @Before
    public void setUp() throws Exception {
        broker = createBroker();

        connectionURI = broker.getTransportConnectors().get(0).getPublishableConnectString();

        ActiveMQConnectionFactory factory = createConnectionFactory();
        connection = factory.createConnection();
        connection.setClientID(getClass().getSimpleName());
        connection.start();
    }

    @After
    public void tearDown() throws Exception {
        connection.close();
        if (broker != null) {
            broker.stop();
        }
    }

    protected ActiveMQConnectionFactory createConnectionFactory() throws Exception {
        return new ActiveMQConnectionFactory(connectionURI);
    }

    protected BrokerService createBroker() throws Exception {
        BrokerService answer = new BrokerService();

        answer.setPersistent(false);
        PolicyEntry policy = new PolicyEntry();
        policy.setAdvisoryForSlowConsumers(true);
        policy.setProducerFlowControl(false);
        PolicyMap pMap = new PolicyMap();
        pMap.setDefaultEntry(policy);

        answer.setUseJmx(true);
        answer.setDestinationPolicy(pMap);
        answer.addConnector("tcp://0.0.0.0:0");
        answer.setDeleteAllMessagesOnStartup(true);
        answer.start();

        return answer;
    }
}