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ActiveMQ example source code file (AutoExposeQueuesInCamelTest.java)

This example ActiveMQ source code file (AutoExposeQueuesInCamelTest.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

activemqcomponent, activemqqueue, activemqtopic, brokerservice, brokerservice, embeddedbrokertestsupport, endpoint, exception, exception, list, list, override, override, t, util

The ActiveMQ AutoExposeQueuesInCamelTest.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.camel.component;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.EmbeddedBrokerTestSupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.camel.CamelContext;
import org.apache.camel.Endpoint;
import org.apache.camel.impl.DefaultCamelContext;
import org.apache.camel.spi.BrowsableEndpoint;
import org.apache.camel.util.CamelContextHelper;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Shows that we can see the queues inside ActiveMQ via Camel
 * by enabling the {@link ActiveMQComponent#setExposeAllQueues(boolean)} flag
 *
 * 
 */
public class AutoExposeQueuesInCamelTest extends EmbeddedBrokerTestSupport {
    private static final transient Logger LOG = LoggerFactory.getLogger(AutoExposeQueuesInCamelTest.class);

    protected ActiveMQQueue sampleQueue = new ActiveMQQueue("foo.bar");
    protected ActiveMQTopic sampleTopic = new ActiveMQTopic("cheese");

    protected CamelContext camelContext = new DefaultCamelContext();

    public void testWorks() throws Exception {
        Thread.sleep(2000);
        LOG.debug("Looking for endpoints...");
        // Changed from using CamelContextHelper.getSingletonEndpoints here because JMS Endpoints in Camel
        // are always non-singleton
        List<BrowsableEndpoint> endpoints = getEndpoints(camelContext, BrowsableEndpoint.class);
        for (BrowsableEndpoint endpoint : endpoints) {
            LOG.debug("Endpoint: " + endpoint);
        }
        assertEquals("Should have found an endpoint: "+ endpoints, 1, endpoints.size());
    }

    public <T> List getEndpoints(CamelContext camelContext, Class type) {
        List<T> answer = new ArrayList();
        Collection<Endpoint> endpoints = camelContext.getEndpoints();
        for (Endpoint endpoint : endpoints) {
            if (type.isInstance(endpoint)) {
                T value = type.cast(endpoint);
                answer.add(value);
            }
        }
        return answer;
    }    
    
    @Override
    protected void setUp() throws Exception {
        super.setUp();

        // lets configure the ActiveMQ component for Camel
        ActiveMQComponent component = new ActiveMQComponent();
        component.setBrokerURL(bindAddress);
        component.setExposeAllQueues(true);

        camelContext.addComponent("activemq", component);
        camelContext.start();
    }

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


    @Override
    protected BrokerService createBroker() throws Exception {
        BrokerService broker = super.createBroker();
        broker.setDestinations(new ActiveMQDestination[]{
                sampleQueue,
                sampleTopic
        });
        return broker;
    }

}

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