ActiveMQ example source code file (BrokerFactory.java)

This example ActiveMQ source code file (BrokerFactory.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

broker_factory_handler_finder, brokerfactory, brokerfactoryhandler, brokerservice, brokerservice, exception, exception, factoryfinder, factoryfinder, illegalargumentexception, invalid, io, ioexception, net, network, uri, uri

The ActiveMQ BrokerFactory.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;

import java.io.IOException;
import java.net.URI;

import org.apache.activemq.util.FactoryFinder;
import org.apache.activemq.util.IOExceptionSupport;

/**
 * A helper class to create a fully configured broker service using a URI. The
 * list of currently supported URI syntaxes is described <a
 * href="http://activemq.apache.org/how-do-i-embed-a-broker-inside-a-connection.html">here</a>
 * 
 * 
 */
public final class BrokerFactory {

    private static final FactoryFinder BROKER_FACTORY_HANDLER_FINDER = new FactoryFinder("META-INF/services/org/apache/activemq/broker/");

    private BrokerFactory() {        
    }
    
    public static BrokerFactoryHandler createBrokerFactoryHandler(String type) throws IOException {
        try {
            return (BrokerFactoryHandler)BROKER_FACTORY_HANDLER_FINDER.newInstance(type);
        } catch (Throwable e) {
            throw IOExceptionSupport.create("Could not load " + type + " factory:" + e, e);
        }
    }

    /**
     * Creates a broker from a URI configuration
     * 
     * @param brokerURI the URI scheme to configure the broker
     * @throws Exception
     */
    public static BrokerService createBroker(URI brokerURI) throws Exception {
        return createBroker(brokerURI, false);
    }

    /**
     * Creates a broker from a URI configuration
     * 
     * @param brokerURI the URI scheme to configure the broker
     * @param startBroker whether or not the broker should have its
     *                {@link BrokerService#start()} method called after
     *                construction
     * @throws Exception
     */
    public static BrokerService createBroker(URI brokerURI, boolean startBroker) throws Exception {
        if (brokerURI.getScheme() == null) {
            throw new IllegalArgumentException("Invalid broker URI, no scheme specified: " + brokerURI);
        }
        BrokerFactoryHandler handler = createBrokerFactoryHandler(brokerURI.getScheme());
        BrokerService broker = handler.createBroker(brokerURI);
        if (startBroker) {
            broker.start();
        }
        return broker;
    }

    /**
     * Creates a broker from a URI configuration
     * 
     * @param brokerURI the URI scheme to configure the broker
     * @throws Exception
     */
    public static BrokerService createBroker(String brokerURI) throws Exception {
        return createBroker(new URI(brokerURI));
    }

    /**
     * Creates a broker from a URI configuration
     * 
     * @param brokerURI the URI scheme to configure the broker
     * @param startBroker whether or not the broker should have its
     *                {@link BrokerService#start()} method called after
     *                construction
     * @throws Exception
     */
    public static BrokerService createBroker(String brokerURI, boolean startBroker) throws Exception {
        return createBroker(new URI(brokerURI), startBroker);
    }

}