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.impl;
019    
020    import org.apache.camel.Exchange;
021    import org.apache.camel.Consumer;
022    import org.apache.camel.Endpoint;
023    import org.apache.camel.Processor;
024    import org.apache.camel.spi.ExceptionHandler;
025    import org.apache.camel.util.ServiceHelper;
026    
027    /**
028     * @version $Revision: 541323 $
029     */
030    public class DefaultConsumer<E extends Exchange> extends ServiceSupport implements Consumer<E> {
031        private Endpoint<E> endpoint;
032        private Processor processor;
033        private ExceptionHandler exceptionHandler;
034    
035        public DefaultConsumer(Endpoint<E> endpoint, Processor processor) {
036            this.endpoint = endpoint;
037            this.processor = processor;
038        }
039    
040        @Override
041            public String toString() {
042                    return "Consumer on " + endpoint;
043            }
044    
045    
046            public Endpoint<E> getEndpoint() {
047            return endpoint;
048        }
049    
050        public Processor getProcessor() {
051            return processor;
052        }
053    
054        public ExceptionHandler getExceptionHandler() {
055            if (exceptionHandler == null) {
056                exceptionHandler = new LoggingExceptionHandler(getClass());
057            }
058            return exceptionHandler;
059        }
060    
061        public void setExceptionHandler(ExceptionHandler exceptionHandler) {
062            this.exceptionHandler = exceptionHandler;
063        }
064    
065        protected void doStop() throws Exception {
066            ServiceHelper.stopServices(processor);
067        }
068    
069        protected void doStart() throws Exception {
070            ServiceHelper.startServices(processor);
071        }
072    
073        /**
074         * Handles the given exception using the {@link #getExceptionHandler()}
075         *
076         * @param t the exception to handle
077         */
078        protected void handleException(Throwable t) {
079            getExceptionHandler().handleException(t);
080        }
081    }