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    
020    import org.apache.camel.CamelContext;
021    import org.apache.camel.CamelContextAware;
022    import org.apache.camel.Consumer;
023    import org.apache.camel.Endpoint;
024    import org.apache.camel.component.bean.BeanProcessor;
025    import org.apache.camel.util.CamelContextHelper;
026    import org.springframework.beans.BeansException;
027    import org.springframework.beans.factory.DisposableBean;
028    import org.springframework.beans.factory.FactoryBean;
029    import org.springframework.beans.factory.InitializingBean;
030    import org.springframework.context.ApplicationContext;
031    import org.springframework.context.ApplicationContextAware;
032    import org.springframework.remoting.support.RemoteExporter;
033    
034    import static org.apache.camel.util.ObjectHelper.notNull;
035    
036    /**
037     * A {@link FactoryBean} to create a proxy to a service exposing a given {@link #getServiceInterface()}
038     */
039    public class CamelServiceExporter extends RemoteExporter implements InitializingBean, DisposableBean, ApplicationContextAware, CamelContextAware {
040        private String uri;
041        private CamelContext camelContext;
042        private Consumer consumer;
043        private String serviceRef;
044        private ApplicationContext applicationContext;
045    
046        public String getUri() {
047            return uri;
048        }
049    
050        public void setUri(String uri) {
051            this.uri = uri;
052        }
053    
054        public CamelContext getCamelContext() {
055            return camelContext;
056        }
057    
058        public void setCamelContext(CamelContext camelContext) {
059            this.camelContext = camelContext;
060        }
061    
062        public String getServiceRef() {
063            return serviceRef;
064        }
065    
066        public void setServiceRef(String serviceRef) {
067            this.serviceRef = serviceRef;
068        }
069    
070        public ApplicationContext getApplicationContext() {
071            return applicationContext;
072        }
073    
074        public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
075            this.applicationContext = applicationContext;
076        }
077    
078        public void afterPropertiesSet() throws Exception {
079            // lets bind the URI to a pojo
080            notNull(uri, "uri");
081            notNull(camelContext, "camelContext");
082            if (serviceRef != null && getService() == null && applicationContext != null) {
083                setService(applicationContext.getBean(serviceRef));
084            }
085    
086            Endpoint endpoint = CamelContextHelper.getMandatoryEndpoint(camelContext, uri);
087            notNull(camelContext, "service");
088            Object proxy = getProxyForService();
089    
090            consumer = endpoint.createConsumer(new BeanProcessor(proxy, camelContext));
091            consumer.start();
092        }
093    
094        public void destroy() throws Exception {
095            if (consumer != null) {
096                consumer.stop();
097            }
098        }
099    
100    }