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 }