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