001    /** 
002     * 
003     * Copyright 2004 Protique Ltd
004     * 
005     * Licensed under the Apache License, Version 2.0 (the "License"); 
006     * you may not use this file except in compliance with the License. 
007     * You may obtain a copy of the License at 
008     * 
009     * http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS, 
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
014     * See the License for the specific language governing permissions and 
015     * limitations under the License. 
016     * 
017     **/
018    package org.activemq.spring;
019    
020    import org.apache.commons.logging.Log;
021    import org.apache.commons.logging.LogFactory;
022    import org.activemq.broker.BrokerContainer;
023    import org.activemq.broker.BrokerContainerFactory;
024    import org.activemq.broker.BrokerContext;
025    import org.activemq.util.IdGenerator;
026    import org.springframework.core.io.Resource;
027    import org.springframework.core.io.ResourceEditor;
028    
029    /**
030     * A Spring implementatation of {@link BrokerContainerFactory} which uses an XML
031     * deployment configuration file to load and configure a {@link BrokerContainer}
032     *
033     * @version $Revision$
034     */
035    public class SpringBrokerContainerFactory implements BrokerContainerFactory {
036        private static final Log log = LogFactory.getLog(SpringBrokerContainerFactory.class);
037    
038        private Resource resource;
039    
040    
041        /**
042         * A static factory method that can be used in Spring config files using a factory method
043         * mechanism to create a broker container easily.
044         */
045        public static BrokerContainer newInstance(Resource resource) {
046            IdGenerator idgen = new IdGenerator();
047            return newInstance(resource, idgen.generateId());
048        }
049    
050        /**
051         * A static factory method that can be used in Spring config files using a factory method
052         * mechanism to create a broker container easily.
053         */
054        public static BrokerContainer newInstance(Resource resource, String brokerName) {
055            SpringBrokerContainerFactory factory = new SpringBrokerContainerFactory(resource);
056            return factory.createBrokerContainer(brokerName, BrokerContext.getInstance());
057        }
058    
059        /**
060         * A helper method, invoked via reflection, to create a new factory from a given configuration
061         * file String which if it starts with classpath: is a classpath URI otherwise a URL is assumed.
062         *
063         * @param resourceName
064         * @return
065         */
066        public static SpringBrokerContainerFactory newFactory(String resourceName) {
067            ResourceEditor editor = new ResourceEditor();
068            editor.setAsText(resourceName);
069            Resource resource = (Resource) editor.getValue();
070            if (resource == null) {
071                throw new IllegalArgumentException("Could not convert '" + resourceName + "' into a Spring Resource");
072            }
073            return new SpringBrokerContainerFactory(resource);
074        }
075    
076        public SpringBrokerContainerFactory() {
077        }
078    
079        public SpringBrokerContainerFactory(Resource resource) {
080            this.resource = resource;
081        }
082    
083        public BrokerContainer createBrokerContainer(String brokerName, BrokerContext context) {
084            log.info("Loading ActiveMQ broker from configuration: " + resource);
085    
086            ActiveMQBeanFactory beanFactory = new ActiveMQBeanFactory(brokerName, resource);
087            return (BrokerContainer) beanFactory.getBean("broker");
088        }
089    
090        // Properties
091        //-------------------------------------------------------------------------
092        public Resource getResource() {
093            return resource;
094        }
095    
096        public void setResource(Resource resource) {
097            this.resource = resource;
098        }
099    
100    }