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ActiveMQ example source code file (AbortSlowConsumerTest.java)

This example ActiveMQ source code file (AbortSlowConsumerTest.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

abortslowconsumerstrategy, brokerservice, connection, connection, entry, exception, exception, management, messageconsumer, messageidlist, messageidlist, object, object, objectname, override, threading, threads, util

The ActiveMQ AbortSlowConsumerTest.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.policy;

import junit.framework.Test;
import org.apache.activemq.JmsMultipleClientsTestSupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.jmx.AbortSlowConsumerStrategyViewMBean;
import org.apache.activemq.broker.jmx.QueueViewMBean;
import org.apache.activemq.broker.region.policy.AbortSlowConsumerStrategy;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.util.MessageIdList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.jms.Connection;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.management.ObjectName;
import javax.management.openmbean.CompositeData;
import javax.management.openmbean.TabularData;
import java.util.ArrayList;
import java.util.List;
import java.util.Map.Entry;
import java.util.concurrent.TimeUnit;


public class AbortSlowConsumerTest extends JmsMultipleClientsTestSupport implements ExceptionListener {

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

    AbortSlowConsumerStrategy underTest;

    public boolean abortConnection = false;
    public long checkPeriod = 2 * 1000;
    public long maxSlowDuration = 5 * 1000;

    private List<Throwable> exceptions = new ArrayList();

    @Override
    protected void setUp() throws Exception {
        exceptions.clear();
        topic = true;
        underTest = new AbortSlowConsumerStrategy();
        super.setUp();
        createDestination();
    }

    @Override
    protected BrokerService createBroker() throws Exception {
        BrokerService broker = super.createBroker();
        PolicyEntry policy = new PolicyEntry();
        underTest.setAbortConnection(abortConnection);
        underTest.setCheckPeriod(checkPeriod);
        underTest.setMaxSlowDuration(maxSlowDuration);

        policy.setSlowConsumerStrategy(underTest);
        policy.setQueuePrefetch(10);
        policy.setTopicPrefetch(10);
        PolicyMap pMap = new PolicyMap();
        pMap.setDefaultEntry(policy);
        broker.setDestinationPolicy(pMap);
        return broker;
    }

    public void testRegularConsumerIsNotAborted() throws Exception {
        startConsumers(destination);
        for (Connection c : connections) {
            c.setExceptionListener(this);
        }
        startProducers(destination, 100);
        allMessagesList.waitForMessagesToArrive(10);
        allMessagesList.assertAtLeastMessagesReceived(10);
    }

    public void initCombosForTestLittleSlowConsumerIsNotAborted() {
        addCombinationValues("topic", new Object[]{Boolean.TRUE, Boolean.FALSE});
    }

    public void testLittleSlowConsumerIsNotAborted() throws Exception {
        startConsumers(destination);
        Entry<MessageConsumer, MessageIdList> consumertoAbort = consumers.entrySet().iterator().next();
        consumertoAbort.getValue().setProcessingDelay(500);
        for (Connection c : connections) {
            c.setExceptionListener(this);
        }
        startProducers(destination, 12);
        allMessagesList.waitForMessagesToArrive(10);
        allMessagesList.assertAtLeastMessagesReceived(10);
    }


    public void initCombosForTestSlowConsumerIsAborted() {
        addCombinationValues("abortConnection", new Object[]{Boolean.TRUE, Boolean.FALSE});
        addCombinationValues("topic", new Object[]{Boolean.TRUE, Boolean.FALSE});
    }

    public void testSlowConsumerIsAborted() throws Exception {
        startConsumers(destination);
        Entry<MessageConsumer, MessageIdList> consumertoAbort = consumers.entrySet().iterator().next();
        consumertoAbort.getValue().setProcessingDelay(8 * 1000);
        for (Connection c : connections) {
            c.setExceptionListener(this);
        }
        startProducers(destination, 100);

        consumertoAbort.getValue().assertMessagesReceived(1);

        TimeUnit.SECONDS.sleep(5);

        consumertoAbort.getValue().assertAtMostMessagesReceived(1);
    }


    public void testSlowConsumerIsAbortedViaJmx() throws Exception {
        underTest.setMaxSlowDuration(60*1000); // so jmx does the abort
        startConsumers(destination);
        Entry<MessageConsumer, MessageIdList> consumertoAbort = consumers.entrySet().iterator().next();
        consumertoAbort.getValue().setProcessingDelay(8 * 1000);
        for (Connection c : connections) {
            c.setExceptionListener(this);
        }
        startProducers(destination, 100);

        consumertoAbort.getValue().assertMessagesReceived(1);

        ActiveMQDestination amqDest = (ActiveMQDestination)destination;
        ObjectName queueViewMBeanName = new ObjectName("org.apache.activemq:Type=" +
                (amqDest.isTopic() ? "Topic" : "Queue") +",Destination="
                + amqDest.getPhysicalName() + ",BrokerName=localhost");

        QueueViewMBean queue = (QueueViewMBean) broker.getManagementContext().newProxyInstance(queueViewMBeanName, QueueViewMBean.class, true);
        ObjectName slowConsumerPolicyMBeanName = queue.getSlowConsumerStrategy();

        assertNotNull(slowConsumerPolicyMBeanName);

        AbortSlowConsumerStrategyViewMBean abortPolicy = (AbortSlowConsumerStrategyViewMBean)
                broker.getManagementContext().newProxyInstance(slowConsumerPolicyMBeanName, AbortSlowConsumerStrategyViewMBean.class, true);

        TimeUnit.SECONDS.sleep(3);

        TabularData slowOnes = abortPolicy.getSlowConsumers();
        assertEquals("one slow consumers", 1, slowOnes.size());

        LOG.info("slow ones:"  + slowOnes);

        CompositeData slowOne = (CompositeData) slowOnes.values().iterator().next();
        LOG.info("Slow one: " + slowOne);

        assertTrue("we have an object name", slowOne.get("subscription") instanceof ObjectName);
        abortPolicy.abortConsumer((ObjectName)slowOne.get("subscription"));

        consumertoAbort.getValue().assertAtMostMessagesReceived(1);

        slowOnes = abortPolicy.getSlowConsumers();
        assertEquals("no slow consumers left", 0, slowOnes.size());

    }


    public void testOnlyOneSlowConsumerIsAborted() throws Exception {
        consumerCount = 10;
        startConsumers(destination);
        Entry<MessageConsumer, MessageIdList> consumertoAbort = consumers.entrySet().iterator().next();
        consumertoAbort.getValue().setProcessingDelay(8 * 1000);
        for (Connection c : connections) {
            c.setExceptionListener(this);
        }
        startProducers(destination, 100);

        allMessagesList.waitForMessagesToArrive(99);
        allMessagesList.assertAtLeastMessagesReceived(99);

        consumertoAbort.getValue().assertMessagesReceived(1);

        TimeUnit.SECONDS.sleep(5);

        consumertoAbort.getValue().assertAtMostMessagesReceived(1);
    }

    public void testAbortAlreadyClosingConsumers() throws Exception {
        consumerCount = 1;
        startConsumers(destination);
        for (MessageIdList list : consumers.values()) {
            list.setProcessingDelay(6 * 1000);
        }
        for (Connection c : connections) {
            c.setExceptionListener(this);
        }
        startProducers(destination, 100);
        allMessagesList.waitForMessagesToArrive(consumerCount);

        for (MessageConsumer consumer : consumers.keySet()) {
            LOG.info("closing consumer: " + consumer);
            /// will block waiting for on message till 6secs expire
            consumer.close();
        }
    }

    public void initCombosForTestAbortAlreadyClosedConsumers() {
        addCombinationValues("abortConnection", new Object[]{Boolean.TRUE, Boolean.FALSE});
        addCombinationValues("topic", new Object[]{Boolean.TRUE, Boolean.FALSE});
    }

    public void testAbortAlreadyClosedConsumers() throws Exception {
        Connection conn = createConnectionFactory().createConnection();
        conn.setExceptionListener(this);
        connections.add(conn);

        Session sess = conn.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        final MessageConsumer consumer = sess.createConsumer(destination);
        conn.start();
        startProducers(destination, 20);
        TimeUnit.SECONDS.sleep(1);
        LOG.info("closing consumer: " + consumer);
        consumer.close();

        TimeUnit.SECONDS.sleep(5);
        assertTrue("no exceptions : " + exceptions.toArray(), exceptions.isEmpty());
    }


    public void initCombosForTestAbortAlreadyClosedConnection() {
        addCombinationValues("abortConnection", new Object[]{Boolean.TRUE, Boolean.FALSE});
        addCombinationValues("topic", new Object[]{Boolean.TRUE, Boolean.FALSE});
    }

    public void testAbortAlreadyClosedConnection() throws Exception {
        Connection conn = createConnectionFactory().createConnection();
        conn.setExceptionListener(this);

        Session sess = conn.createSession(false, Session.CLIENT_ACKNOWLEDGE);
        sess.createConsumer(destination);
        conn.start();
        startProducers(destination, 20);
        TimeUnit.SECONDS.sleep(1);
        LOG.info("closing connection: " + conn);
        conn.close();

        TimeUnit.SECONDS.sleep(5);
        assertTrue("no exceptions : " + exceptions.toArray(), exceptions.isEmpty());
    }

    public void testAbortConsumerOnDeadConnection() throws Exception {
        // socket proxy on pause, close could hang??
    }

    public void onException(JMSException exception) {
        exceptions.add(exception);
        exception.printStackTrace();
    }

    public static Test suite() {
        return suite(AbortSlowConsumerTest.class);
    }
}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ AbortSlowConsumerTest.java source code file:

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