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.camel.spring.remoting;
018
019 import org.apache.camel.CamelContext;
020 import org.apache.camel.CamelContextAware;
021 import org.apache.camel.Endpoint;
022 import org.apache.camel.FailedToCreateProducerException;
023 import org.apache.camel.Producer;
024 import org.apache.camel.component.bean.ProxyHelper;
025 import org.apache.camel.spring.util.CamelContextResolverHelper;
026 import org.apache.camel.util.ServiceHelper;
027 import org.springframework.beans.BeansException;
028 import org.springframework.beans.factory.DisposableBean;
029 import org.springframework.beans.factory.FactoryBean;
030 import org.springframework.context.ApplicationContext;
031 import org.springframework.context.ApplicationContextAware;
032 import org.springframework.remoting.support.UrlBasedRemoteAccessor;
033
034 /**
035 * A {@link FactoryBean} to create a Proxy to a a Camel Pojo Endpoint.
036 */
037 public class CamelProxyFactoryBean extends UrlBasedRemoteAccessor implements FactoryBean, CamelContextAware, DisposableBean, ApplicationContextAware {
038 private String serviceRef;
039 private CamelContext camelContext;
040 private String camelContextId;
041 private ApplicationContext applicationContext;
042 private Endpoint endpoint;
043 private Object serviceProxy;
044 private Producer producer;
045
046 @Override
047 @SuppressWarnings("unchecked")
048 public void afterPropertiesSet() {
049 if (endpoint == null) {
050 if (camelContext == null && camelContextId != null) {
051 camelContext = CamelContextResolverHelper.getCamelContextWithId(applicationContext, camelContextId);
052 }
053
054 if (camelContext == null) {
055 throw new IllegalArgumentException("camelContext or camelContextId must be specified");
056 }
057
058 if (getServiceUrl() == null && getServiceRef() == null) {
059 throw new IllegalArgumentException("serviceUrl or serviceRef must be specified.");
060 }
061
062 // lookup endpoint or we have the url for it
063 if (getServiceRef() != null) {
064 endpoint = camelContext.getRegistry().lookup(getServiceRef(), Endpoint.class);
065 } else {
066 endpoint = camelContext.getEndpoint(getServiceUrl());
067 }
068
069 if (endpoint == null) {
070 throw new IllegalArgumentException("Could not resolve endpoint: " + getServiceUrl());
071 }
072 }
073
074 try {
075 producer = endpoint.createProducer();
076 ServiceHelper.startService(producer);
077 serviceProxy = ProxyHelper.createProxy(endpoint, producer, getServiceInterface());
078 } catch (Exception e) {
079 throw new FailedToCreateProducerException(endpoint, e);
080 }
081 }
082
083 public void destroy() throws Exception {
084 ServiceHelper.stopService(producer);
085 }
086
087 public Class getServiceInterface() {
088 return super.getServiceInterface();
089 }
090
091 public String getServiceUrl() {
092 return super.getServiceUrl();
093 }
094
095 public Object getObject() throws Exception {
096 return serviceProxy;
097 }
098
099 public Class getObjectType() {
100 return getServiceInterface();
101 }
102
103 public boolean isSingleton() {
104 return true;
105 }
106
107 public String getServiceRef() {
108 return serviceRef;
109 }
110
111 public void setServiceRef(String serviceRef) {
112 this.serviceRef = serviceRef;
113 }
114
115 public Endpoint getEndpoint() {
116 return endpoint;
117 }
118
119 public void setEndpoint(Endpoint endpoint) {
120 this.endpoint = endpoint;
121 }
122
123 public CamelContext getCamelContext() {
124 return camelContext;
125 }
126
127 public void setCamelContext(CamelContext camelContext) {
128 this.camelContext = camelContext;
129 }
130
131 public void setCamelContextId(String contextId) {
132 this.camelContextId = contextId;
133 }
134
135 public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
136 this.applicationContext = applicationContext;
137 }
138
139 }