001 /**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one or more
004 * contributor license agreements. See the NOTICE file distributed with
005 * this work for additional information regarding copyright ownership.
006 * The ASF licenses this file to You under the Apache License, Version 2.0
007 * (the "License"); you may not use this file except in compliance with
008 * the License. You may obtain a copy of the License at
009 *
010 * http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018 package org.apache.camel.component.processor;
019
020 import org.apache.camel.Endpoint;
021 import org.apache.camel.Processor;
022 import org.apache.camel.Exchange;
023 import org.apache.camel.Consumer;
024 import org.apache.camel.Producer;
025 import org.apache.camel.Component;
026 import org.apache.camel.impl.DefaultEndpoint;
027 import org.apache.camel.impl.DefaultExchange;
028 import org.apache.camel.impl.DefaultProducer;
029 import org.apache.camel.processor.loadbalancer.LoadBalancer;
030
031 /**
032 * A base class for creating {@link Endpoint} implementations from a {@link Processor}
033 *
034 * @version $Revision: 1.1 $
035 */
036 public class ProcessorEndpoint extends DefaultEndpoint<Exchange> {
037 private final Processor processor;
038 private final LoadBalancer loadBalancer;
039
040 protected ProcessorEndpoint(String endpointUri, Component component, Processor processor, LoadBalancer loadBalancer) {
041 super(endpointUri, component);
042 this.processor = processor;
043 this.loadBalancer = loadBalancer;
044 }
045
046 public Exchange createExchange() {
047 return new DefaultExchange(getContext());
048 }
049
050 public Producer<Exchange> createProducer() throws Exception {
051 return new DefaultProducer<Exchange>(this) {
052 public void process(Exchange exchange) throws Exception {
053 onExchange(exchange);
054 }
055 };
056 }
057
058 public Consumer<Exchange> createConsumer(Processor processor) throws Exception {
059 return new ProcessorEndpointConsumer(this, processor);
060 }
061
062 public Processor getProcessor() {
063 return processor;
064 }
065
066 public LoadBalancer getLoadBalancer() {
067 return loadBalancer;
068 }
069
070 protected void onExchange(Exchange exchange) throws Exception {
071 processor.process(exchange);
072
073 // now lets output to the load balancer
074 loadBalancer.process(exchange);
075 }
076
077 public boolean isSingleton() {
078 return true;
079 }
080 }