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.processor; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Predicate; 021 import org.apache.camel.Processor; 022 import org.apache.camel.processor.exceptionpolicy.ExceptionPolicyStrategy; 023 024 /** 025 * Default error handler 026 * 027 * @version $Revision: 784803 $ 028 */ 029 public class DefaultErrorHandler extends RedeliveryErrorHandler { 030 031 /** 032 * Creates the default error handler. 033 * 034 * @param output outer processor that should use this default error handler 035 * @param logger logger to use for logging failures and redelivery attempts 036 * @param redeliveryProcessor an optional processor to run before redelivery attempt 037 * @param redeliveryPolicy policy for redelivery 038 * @param handledPolicy policy for handling failed exception that are moved to the dead letter queue 039 * @param exceptionPolicyStrategy strategy for onException handling 040 */ 041 public DefaultErrorHandler(Processor output, Logger logger, Processor redeliveryProcessor, RedeliveryPolicy redeliveryPolicy, 042 Predicate handledPolicy, ExceptionPolicyStrategy exceptionPolicyStrategy) { 043 super(output, logger, redeliveryProcessor, redeliveryPolicy, handledPolicy, null, null, false); 044 setExceptionPolicy(exceptionPolicyStrategy); 045 } 046 047 public void process(Exchange exchange) throws Exception { 048 // just to let the stacktrace reveal that this is a dead letter channel 049 super.process(exchange); 050 } 051 052 @Override 053 public String toString() { 054 if (output == null) { 055 // if no output then dont do any description 056 return ""; 057 } 058 return "DefaultErrorHandler[" + output + "]"; 059 } 060 061 }