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.Producer;
023    import org.apache.camel.component.bean.ProxyHelper;
024    import org.springframework.beans.factory.DisposableBean;
025    import org.springframework.beans.factory.FactoryBean;
026    import org.springframework.remoting.support.UrlBasedRemoteAccessor;
027    
028    /**
029     * A {@link FactoryBean} to create a Proxy to a a Camel Pojo Endpoint.
030     *
031     * @author chirino
032     */
033    public class CamelProxyFactoryBean extends UrlBasedRemoteAccessor implements FactoryBean, CamelContextAware, DisposableBean {
034        private CamelContext camelContext;
035        private Endpoint endpoint;
036        private Object serviceProxy;
037        private Producer producer;
038    
039        @Override
040        @SuppressWarnings("unchecked")
041        public void afterPropertiesSet() {
042            super.afterPropertiesSet();
043            try {
044                if (endpoint == null) {
045                    if (getServiceUrl() == null || camelContext == null) {
046                        throw new IllegalArgumentException("If endpoint is not specified, the serviceUrl and camelContext must be specified.");
047                    }
048    
049                    endpoint = camelContext.getEndpoint(getServiceUrl());
050                    if (endpoint == null) {
051                        throw new IllegalArgumentException("Could not resolve endpoint: " + getServiceUrl());
052                    }
053                }
054    
055                this.producer = endpoint.createProducer();
056                this.producer.start();
057                this.serviceProxy = ProxyHelper.createProxy(endpoint, producer, getServiceInterface());
058            } catch (Exception e) {
059                throw new IllegalArgumentException(e);
060            }
061        }
062    
063        public void destroy() throws Exception {
064            this.producer.stop();
065            this.producer = null;
066            this.serviceProxy = null;
067        }
068    
069        public Class getServiceInterface() {
070            return super.getServiceInterface();
071        }
072    
073        public String getServiceUrl() {
074            return super.getServiceUrl();
075        }
076    
077        public Object getObject() throws Exception {
078            return serviceProxy;
079        }
080    
081        public Class getObjectType() {
082            return getServiceInterface();
083        }
084    
085        public boolean isSingleton() {
086            return true;
087        }
088    
089        public Endpoint getEndpoint() {
090            return endpoint;
091        }
092    
093        public void setEndpoint(Endpoint endpoint) {
094            this.endpoint = endpoint;
095        }
096    
097        public CamelContext getCamelContext() {
098            return camelContext;
099        }
100    
101        public void setCamelContext(CamelContext camelContext) {
102            this.camelContext = camelContext;
103        }
104    
105    }