ActiveMQ example source code file (BrokerFactoryBean.java)

This example ActiveMQ source code file (BrokerFactoryBean.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

bean, beansexception, brokerfactorybean, brokerfactorybean, brokerservice, brokerservice, disposablebean, exception, exception, illegalargumentexception, initializingbean, javabean, net, network, resource, resourcexmlapplicationcontext, string, string

The ActiveMQ BrokerFactoryBean.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.xbean;

import java.beans.PropertyEditorManager;
import java.net.URI;

import org.apache.activemq.broker.BrokerService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.apache.xbean.spring.context.ResourceXmlApplicationContext;
import org.apache.xbean.spring.context.impl.URIEditor;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.core.io.Resource;

/**
 * A Spring {@link FactoryBean} which creates an embedded broker inside a Spring
 * XML using an external <a href="http://gbean.org/Custom+XML">XBean Spring XML
 * configuration file</a> which provides a much neater and more concise XML
 * format.
 * 
 * 
 */
public class BrokerFactoryBean implements FactoryBean, InitializingBean, DisposableBean, ApplicationContextAware {

    static {
        PropertyEditorManager.registerEditor(URI.class, URIEditor.class);
    }

    private Resource config;
    private XBeanBrokerService broker;
    private boolean start;
    private ResourceXmlApplicationContext context;
    private ApplicationContext parentContext;
    
    private boolean systemExitOnShutdown;
    private int systemExitOnShutdownExitCode;

    public BrokerFactoryBean() {
    }

    public BrokerFactoryBean(Resource config) {
        this.config = config;
    }

    public Object getObject() throws Exception {
        return broker;
    }

    public Class getObjectType() {
        return BrokerService.class;
    }

    public boolean isSingleton() {
        return true;
    }

    public void setApplicationContext(ApplicationContext parentContext) throws BeansException {
        this.parentContext = parentContext;
    }

    public void afterPropertiesSet() throws Exception {
        if (config == null) {
            throw new IllegalArgumentException("config property must be set");
        }
        context = new ResourceXmlApplicationContext(config, parentContext);

        try {
            broker = (XBeanBrokerService)context.getBean("broker");
        } catch (BeansException e) {
            // ignore...
            // log.trace("No bean named broker available: " + e, e);
        }
        if (broker == null) {
            // lets try find by type
            String[] names = context.getBeanNamesForType(BrokerService.class);
            for (int i = 0; i < names.length; i++) {
                String name = names[i];
                broker = (XBeanBrokerService)context.getBean(name);
                if (broker != null) {
                    break;
                }
            }
        }
        if (broker == null) {
            throw new IllegalArgumentException("The configuration has no BrokerService instance for resource: " + config);
        }
        
        if( systemExitOnShutdown ) {
            broker.addShutdownHook(new Runnable(){
                public void run() {
                    System.exit(systemExitOnShutdownExitCode);
                }
            });
        }
        if (start) {
            broker.start();
        }
    }

    public void destroy() throws Exception {
        if (context != null) {
            context.close();
        }
        if (broker != null) {
            broker.stop();
        }
    }

    public Resource getConfig() {
        return config;
    }

    public void setConfig(Resource config) {
        this.config = config;
    }

    public BrokerService getBroker() {
        return broker;
    }

    public boolean isStart() {
        return start;
    }

    public void setStart(boolean start) {
        this.start = start;
    }

    public boolean isSystemExitOnStop() {
        return systemExitOnShutdown;
    }

    public void setSystemExitOnStop(boolean systemExitOnStop) {
        this.systemExitOnShutdown = systemExitOnStop;
    }

    public boolean isSystemExitOnShutdown() {
        return systemExitOnShutdown;
    }

    public void setSystemExitOnShutdown(boolean systemExitOnShutdown) {
        this.systemExitOnShutdown = systemExitOnShutdown;
    }

    public int getSystemExitOnShutdownExitCode() {
        return systemExitOnShutdownExitCode;
    }

    public void setSystemExitOnShutdownExitCode(int systemExitOnShutdownExitCode) {
        this.systemExitOnShutdownExitCode = systemExitOnShutdownExitCode;
    }

}