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ActiveMQ example source code file (DurableSubscriptionUnsubscribeTest.java)

This example ActiveMQ source code file (DurableSubscriptionUnsubscribeTest.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

activemqtopic, connection, connection, durabletopicsubscription, exception, exception, io, kahadbpersistenceadapter, management, objectname, objectname, override, removesubscriptioninfo, session, subsid, subsid, util

The ActiveMQ DurableSubscriptionUnsubscribeTest.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.usecases;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.TestSupport;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.jmx.DurableSubscriptionViewMBean;
import org.apache.activemq.broker.jmx.SubscriptionView;
import org.apache.activemq.broker.jmx.SubscriptionViewMBean;
import org.apache.activemq.broker.region.Destination;
import org.apache.activemq.broker.region.DurableTopicSubscription;
import org.apache.activemq.broker.region.Subscription;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.command.RemoveSubscriptionInfo;
import org.apache.activemq.store.kahadb.KahaDBPersistenceAdapter;

import javax.jms.Connection;
import javax.jms.Session;
import javax.management.*;
import java.io.File;
import java.lang.management.ManagementFactory;
import java.util.List;


public class DurableSubscriptionUnsubscribeTest extends TestSupport {

    BrokerService broker = null;
    Connection connection = null;
    ActiveMQTopic topic;

    public void testJMXSubscriptionUnsubscribe() throws Exception {
        doJMXUnsubscribe(false);
    }

    public void testJMXSubscriptionUnsubscribeWithRestart() throws Exception {
        doJMXUnsubscribe(true);
    }

    public void testConnectionSubscriptionUnsubscribe() throws Exception {
        doConnectionUnsubscribe(false);
    }

    public void testConnectionSubscriptionUnsubscribeWithRestart() throws Exception {
        doConnectionUnsubscribe(true);
    }

    public void testDirectSubscriptionUnsubscribe() throws Exception {
        doDirectUnsubscribe(false);
    }

    public void testDirectubscriptionUnsubscribeWithRestart() throws Exception {
        doDirectUnsubscribe(true);
    }

    public void doJMXUnsubscribe(boolean restart) throws Exception {
        createSubscriptions();

        Thread.sleep(1000);
        assertCount(100, 0);

        if (restart) {
            restartBroker();
            assertCount(100, 0);
        }

        ObjectName[] subs = broker.getAdminView().getInactiveDurableTopicSubscribers();

        for (int i = 0; i < subs.length; i++) {
            ObjectName subName = subs[i];
            DurableSubscriptionViewMBean sub = (DurableSubscriptionViewMBean)broker.getManagementContext().newProxyInstance(subName, DurableSubscriptionViewMBean.class, true);
            sub.destroy();

            if (i % 20 == 0) {
                Thread.sleep(1000);
                assertCount(100 - i - 1, 0);
            }
        }

        Thread.sleep(1000);
        assertCount(0, 0);

        if (restart) {
            restartBroker();
            assertCount(0, 0);
        }
    }

    public void doConnectionUnsubscribe(boolean restart) throws Exception {
        createSubscriptions();

        Thread.sleep(1000);
        assertCount(100, 0);

        Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        session.createDurableSubscriber(topic, "SubsId1");

        Thread.sleep(1000);
        assertCount(100, 1);

        Session session2 = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        session2.createDurableSubscriber(topic, "SubsId2");

        Thread.sleep(1000);
        assertCount(100, 2);

        session.close();

        Thread.sleep(1000);
        assertCount(100, 1);

        session2.close();

        Thread.sleep(1000);
        assertCount(100, 0);

        if (restart) {
            restartBroker();
            assertCount(100, 0);
        }

        for (int i = 0; i < 100; i++) {
            session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            session.unsubscribe("SubsId" + i);
            session.close();

            if (i % 20 == 0) {
                Thread.sleep(1000);
                assertCount(100 - i - 1, 0);
            }
        }

        Thread.sleep(1000);
        assertCount(0, 0);

        if (restart) {
            restartBroker();
            assertCount(0, 0);
        }
    }

    public void doDirectUnsubscribe(boolean restart) throws Exception {
        createSubscriptions();

        Thread.sleep(1000);
        assertCount(100, 0);

        if (restart) {
            restartBroker();
            assertCount(100, 0);
        }

        for (int i = 0; i < 100; i++) {
            RemoveSubscriptionInfo info = new RemoveSubscriptionInfo();
            info.setClientId(getName());
            info.setSubscriptionName("SubsId" + i);
            ConnectionContext context = new ConnectionContext();
            context.setBroker(broker.getRegionBroker());
            context.setClientId(getName());
            broker.getRegionBroker().removeSubscription(context, info);

            if (i % 20 == 0) {
                assertCount(100 - i - 1, 0);
            }
        }

        assertCount(0, 0);

        if (restart) {
            restartBroker();
            assertCount(0, 0);
        }
    }

    private void createSubscriptions() throws Exception {
        for (int i = 0; i < 100; i++) {
            Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
            session.createDurableSubscriber(topic, "SubsId" + i);
            session.close();
        }        
    }


    private void assertCount(int all, int active) throws Exception {
        int inactive = all - active;

        // broker check
        Destination destination = broker.getDestination(topic);
        List<Subscription> subs = destination.getConsumers();
        int cActive = 0, cInactive = 0;
        for (Subscription sub: subs) {
            if (sub instanceof DurableTopicSubscription) {
                DurableTopicSubscription durable = (DurableTopicSubscription) sub;
                if (durable.isActive())
                    cActive++;
                else
                    cInactive++;
            }
        }
        assertEquals(active, cActive);
        assertEquals(inactive, cInactive);

        // admin view
        ObjectName[] subscriptions = broker.getAdminView().getDurableTopicSubscribers();
        assertEquals(active, subscriptions.length);
        subscriptions = broker.getAdminView().getInactiveDurableTopicSubscribers();
        assertEquals(inactive, subscriptions.length);

        // check the strange false MBean
        if (all == 0)
            assertEquals(0, countMBean());
    }

    private int countMBean() throws MalformedObjectNameException, InstanceNotFoundException {
        int count = 0;
        for (int i = 0; i < 100; i++) {
            String name = "org.apache.activemq:BrokerName=" + getName() + ",Type=Subscription,active=false,name=" + getName() + "_SubsId" + i;
            ObjectName sub = new ObjectName(name);
            try {
                broker.getManagementContext().getObjectInstance(sub);
                count++;
            }
            catch (InstanceNotFoundException ignore) {
                // this should happen
            }
        }
        return count;
    }

    private void startBroker(boolean deleteMessages) throws Exception {
        broker = BrokerFactory.createBroker("broker:(vm://" + getName() + ")");
        broker.setUseJmx(true);
        broker.getManagementContext().setCreateConnector(false);
        broker.setBrokerName(getName());

        broker.setPersistent(true);
        KahaDBPersistenceAdapter persistenceAdapter = new KahaDBPersistenceAdapter();
        persistenceAdapter.setDirectory(new File("activemq-data/" + getName()));
        broker.setPersistenceAdapter(persistenceAdapter);
        if (deleteMessages) {
            broker.setDeleteAllMessagesOnStartup(true);
        }


        broker.setKeepDurableSubsActive(true);

        broker.start();
        broker.waitUntilStarted();

        connection = createConnection();
    }

    private void stopBroker() throws Exception {
        if (connection != null)
            connection.close();
        connection = null;

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

    private void restartBroker() throws Exception {
        stopBroker();
        startBroker(false);
    }

    protected ActiveMQConnectionFactory createConnectionFactory() throws Exception {
        return new ActiveMQConnectionFactory("vm://" + getName() + "?waitForStart=5000&create=false");
    }

    @Override
    protected void setUp() throws Exception {
        super.setUp();

        topic = (ActiveMQTopic) createDestination();
        startBroker(true);
    }

    @Override
    protected void tearDown() throws Exception {
        stopBroker();
        super.tearDown();
    }

    @Override
    protected Connection createConnection() throws Exception {
        Connection rc = super.createConnection();
        rc.setClientID(getName());
        rc.start();
        return rc;
    }
}

Other ActiveMQ examples (source code examples)

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