activemq-unit-tests/src/test/java/org/apache/activemq/ConsumerReceiveWithTimeoutTest.java

/**
 * 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 static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNull;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.Session;
import javax.jms.TextMessage;

import org.apache.activemq.broker.BrokerService;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

public class ConsumerReceiveWithTimeoutTest {

    private ActiveMQConnection connection;
    private BrokerService broker;
    private String connectionUri;

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

        connection = createConnection();
    }

    @After
    public void tearDown() throws Exception {
        if (connection != null) {
            try {
                connection.close();
            } catch (Exception e) {}
        }

        if (broker != null) {
            broker.stop();
            broker.waitUntilStopped();
        }
    }

    /**
     * Test to check if consumer thread wakes up inside a receive(timeout) after
     * a message is dispatched to the consumer
     *
     * @throws javax.jms.JMSException
     */
    @Test(timeout = 30000)
    public void testConsumerReceiveBeforeMessageDispatched() throws JMSException {

        connection.start();

        final Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        final Queue queue = session.createQueue("test");

        Thread t = new Thread() {
            @Override
            public void run() {
                try {
                    // wait for 10 seconds to allow consumer.receive to be run
                    // first
                    Thread.sleep(10000);
                    MessageProducer producer = session.createProducer(queue);
                    producer.send(session.createTextMessage("Hello"));
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        };

        t.start();

        // Consume the message...
        MessageConsumer consumer = session.createConsumer(queue);
        Message msg = consumer.receive(60000);
        assertNotNull(msg);
        session.close();
    }

    /**
     * check if receive(timeout) does timeout when prefetch=0 and redeliveries=0
     * <p/>
     * send a message.
     * consume and rollback to ensure redeliverCount is incremented
     * try to consume message with a timeout.
     */
    @Test(timeout=20000)
    public void testConsumerReceivePrefetchZeroRedeliveryZero() throws Exception {

        connection.start();

        // push message to queue
        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Queue queue = session.createQueue("test.prefetch.zero");
        MessageProducer producer = session.createProducer(queue);
        TextMessage textMessage = session.createTextMessage("test Message");
        producer.send(textMessage);
        session.close();

        // consume and rollback - increase redelivery counter on message
        session = connection.createSession(true, Session.SESSION_TRANSACTED);
        MessageConsumer consumer = session.createConsumer(queue);
        Message message = consumer.receive(2000);
        assertNotNull(message);
        session.rollback();
        session.close();

        // Reconnect with zero prefetch and zero redeliveries allowed.
        connection.close();
        connection = createConnection();
        connection.getPrefetchPolicy().setQueuePrefetch(0);
        connection.getRedeliveryPolicy().setMaximumRedeliveries(0);
        connection.start();

        // try consume with timeout - expect it to timeout and return NULL message
        session = connection.createSession(true, Session.SESSION_TRANSACTED);
        consumer = session.createConsumer(queue);
        message = consumer.receive(3000);

        assertNull(message);
    }

    private void createBroker() throws Exception {
        broker = new BrokerService();
        broker.setUseJmx(false);
        broker.setPersistent(false);
        broker.addConnector("tcp://localhost:0");
        broker.start();
        broker.waitUntilStarted();

        connectionUri = broker.getTransportConnectors().get(0).getPublishableConnectString();
    }

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

    protected ActiveMQConnection createConnection() throws Exception {
        return (ActiveMQConnection) createConnectionFactory().createConnection();
    }
}