001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. 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 package org.apache.activemq.xbean;
018
019 import java.beans.PropertyEditorManager;
020 import java.net.MalformedURLException;
021 import java.net.URI;
022
023 import org.apache.activemq.broker.BrokerFactoryHandler;
024 import org.apache.activemq.broker.BrokerService;
025 import org.apache.activemq.spring.Utils;
026 import org.apache.activemq.util.IntrospectionSupport;
027 import org.apache.activemq.util.URISupport;
028 import org.apache.xbean.spring.context.ResourceXmlApplicationContext;
029 import org.apache.xbean.spring.context.impl.URIEditor;
030 import org.slf4j.Logger;
031 import org.slf4j.LoggerFactory;
032 import org.springframework.beans.BeansException;
033 import org.springframework.beans.FatalBeanException;
034 import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
035 import org.springframework.context.ApplicationContext;
036 import org.springframework.context.ApplicationContextAware;
037 import org.springframework.core.io.Resource;
038
039 /**
040 *
041 */
042 public class XBeanBrokerFactory implements BrokerFactoryHandler {
043 private static final transient Logger LOG = LoggerFactory.getLogger(XBeanBrokerFactory.class);
044
045 static {
046 PropertyEditorManager.registerEditor(URI.class, URIEditor.class);
047 }
048
049 private boolean validate = true;
050 public boolean isValidate() {
051 return validate;
052 }
053
054 public void setValidate(boolean validate) {
055 this.validate = validate;
056 }
057
058 public BrokerService createBroker(URI config) throws Exception {
059
060 String uri = config.getSchemeSpecificPart();
061 if (uri.lastIndexOf('?') != -1) {
062 IntrospectionSupport.setProperties(this, URISupport.parseQuery(uri));
063 uri = uri.substring(0, uri.lastIndexOf('?'));
064 }
065
066 ApplicationContext context = createApplicationContext(uri);
067
068 BrokerService broker = null;
069 try {
070 broker = (BrokerService)context.getBean("broker");
071 } catch (BeansException e) {
072 }
073
074 if (broker == null) {
075 // lets try find by type
076 String[] names = context.getBeanNamesForType(BrokerService.class);
077 for (int i = 0; i < names.length; i++) {
078 String name = names[i];
079 broker = (BrokerService)context.getBean(name);
080 if (broker != null) {
081 break;
082 }
083 }
084 }
085 if (broker == null) {
086 throw new IllegalArgumentException("The configuration has no BrokerService instance for resource: " + config);
087 }
088
089 if (broker instanceof ApplicationContextAware) {
090 ((ApplicationContextAware)broker).setApplicationContext(context);
091 }
092
093 // TODO warning resources from the context may not be closed down!
094
095 return broker;
096 }
097
098 protected ApplicationContext createApplicationContext(String uri) throws MalformedURLException {
099 Resource resource = Utils.resourceFromString(uri);
100 LOG.debug("Using " + resource + " from " + uri);
101 try {
102 return new ResourceXmlApplicationContext(resource) {
103 @Override
104 protected void initBeanDefinitionReader(XmlBeanDefinitionReader reader) {
105 reader.setValidating(isValidate());
106 }
107 };
108 } catch (FatalBeanException errorToLog) {
109 LOG.error("Failed to load: " + resource + ", reason: " + errorToLog.getLocalizedMessage(), errorToLog);
110 throw errorToLog;
111 }
112 }
113 }