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ActiveMQ example source code file (MessageGroupMapTest.java)

This example ActiveMQ source code file (MessageGroupMapTest.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

connectionid, connectionid, consumerid, consumerid, entry, exception, exception, messagegroup, messagegroupmap, messagegroupset, messagegroupset, sessionid, simplemessagegroupmap, testcase

The ActiveMQ MessageGroupMapTest.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.region.group;

import junit.framework.TestCase;
import org.apache.activemq.command.ConnectionId;
import org.apache.activemq.command.ConsumerId;
import org.apache.activemq.command.SessionId;

/**
 * 
 * 
 */
public class MessageGroupMapTest extends TestCase {

    protected MessageGroupMap map;
    private ConsumerId consumer1;
    private ConsumerId consumer2;
    private ConsumerId consumer3;
    private long idCounter;

    public void testSingleConsumerForManyBucks() throws Exception {
        assertGet("1", null);

        map.put("1", consumer1);
        assertGet("1", consumer1);
        map.put("2", consumer1);
        assertGet("2", consumer1);
        map.put("3", consumer1);
        assertGet("3", consumer1);

        MessageGroupSet set = map.removeConsumer(consumer1);
        assertContains(set, "1");
        assertContains(set, "2");
        assertContains(set, "3");
        assertGet("1", null);
        assertGet("2", null);
        assertGet("3", null);
    }

    public void testManyConsumers() throws Exception {
        assertGet("1", null);

        map.put("1", consumer1);
        assertGet("1", consumer1);
        map.put("2", consumer2);
        assertGet("2", consumer2);
        map.put("3", consumer3);
        assertGet("3", consumer3);

        MessageGroupSet set = map.removeConsumer(consumer1);
        assertContains(set, "1");

        assertGet("1", null);
        map.put("1", consumer2);
        assertGet("1", consumer2);

        set = map.removeConsumer(consumer2);
        assertContains(set, "1");
        assertContains(set, "2");
    }

    protected void setUp() throws Exception {
        super.setUp();
        map = createMessageGroupMap();
        consumer1 = createConsumerId();
        consumer2 = createConsumerId();
        consumer3 = createConsumerId();
    }

    protected MessageGroupMap createMessageGroupMap() {
        return new SimpleMessageGroupMap();
    }

    protected ConsumerId createConsumerId() {
        ConnectionId connectionId = new ConnectionId("" + ++idCounter);
        SessionId sessionId = new SessionId(connectionId, ++idCounter);
        ConsumerId answer = new ConsumerId(sessionId, ++idCounter);
        return answer;
    }

    protected void assertGet(String groupdId, ConsumerId expected) {
        ConsumerId actual = map.get(groupdId);
        assertEquals("Entry for groupId: " + groupdId, expected, actual);
    }

    protected void assertContains(MessageGroupSet set, String groupID) {
        assertTrue("MessageGroup set: " + set + " does not contain groupID: " + groupID, set.contains(groupID));
    }
}

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