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.springframework.beans.BeansException;
027 import org.springframework.beans.factory.DisposableBean;
028 import org.springframework.beans.factory.FactoryBean;
029 import org.springframework.context.ApplicationContext;
030 import org.springframework.context.ApplicationContextAware;
031 import org.springframework.remoting.support.UrlBasedRemoteAccessor;
032
033 /**
034 * A {@link FactoryBean} to create a Proxy to a a Camel Pojo Endpoint.
035 */
036 public class CamelProxyFactoryBean extends UrlBasedRemoteAccessor implements FactoryBean, CamelContextAware, DisposableBean, ApplicationContextAware {
037 private String serviceRef;
038 private CamelContext camelContext;
039 private String camelContextId;
040 private ApplicationContext applicationContext;
041 private Endpoint endpoint;
042 private Object serviceProxy;
043 private Producer producer;
044
045 @Override
046 @SuppressWarnings("unchecked")
047 public void afterPropertiesSet() {
048 if (endpoint == null) {
049 if (camelContext == null && camelContextId != null) {
050 camelContext = CamelContextResolverHelper.getCamelContextWithId(applicationContext, camelContextId);
051 }
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().lookup(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 this.producer = endpoint.createProducer();
075 this.producer.start();
076 this.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 this.producer.stop();
084 this.producer = null;
085 this.serviceProxy = null;
086 }
087
088 public Class getServiceInterface() {
089 return super.getServiceInterface();
090 }
091
092 public String getServiceUrl() {
093 return super.getServiceUrl();
094 }
095
096 public Object getObject() throws Exception {
097 return serviceProxy;
098 }
099
100 public Class getObjectType() {
101 return getServiceInterface();
102 }
103
104 public boolean isSingleton() {
105 return true;
106 }
107
108 public String getServiceRef() {
109 return serviceRef;
110 }
111
112 public void setServiceRef(String serviceRef) {
113 this.serviceRef = serviceRef;
114 }
115
116 public Endpoint getEndpoint() {
117 return endpoint;
118 }
119
120 public void setEndpoint(Endpoint endpoint) {
121 this.endpoint = endpoint;
122 }
123
124 public CamelContext getCamelContext() {
125 return camelContext;
126 }
127
128 public void setCamelContext(CamelContext camelContext) {
129 this.camelContext = camelContext;
130 }
131
132 public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
133 this.applicationContext = applicationContext;
134 }
135
136 }