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 java.util.concurrent.ScheduledExecutorService;
020    
021    import org.apache.camel.CamelContext;
022    import org.apache.camel.Exchange;
023    import org.apache.camel.Predicate;
024    import org.apache.camel.Processor;
025    import org.apache.camel.processor.exceptionpolicy.ExceptionPolicyStrategy;
026    import org.apache.camel.util.CamelLogger;
027    
028    /**
029     * Default error handler
030     *
031     * @version 
032     */
033    public class DefaultErrorHandler extends RedeliveryErrorHandler {
034    
035        /**
036         * Creates the default error handler.
037         *
038         * @param camelContext              the camel context
039         * @param output                    outer processor that should use this default error handler
040         * @param logger                    logger to use for logging failures and redelivery attempts
041         * @param redeliveryProcessor       an optional processor to run before redelivery attempt
042         * @param redeliveryPolicy          policy for redelivery
043         * @param exceptionPolicyStrategy   strategy for onException handling
044         * @param retryWhile                retry while
045         * @param executorService           the {@link java.util.concurrent.ScheduledExecutorService} to be used for redelivery thread pool. Can be <tt>null</tt>.
046         */
047        public DefaultErrorHandler(CamelContext camelContext, Processor output, CamelLogger logger, Processor redeliveryProcessor,
048                RedeliveryPolicy redeliveryPolicy, ExceptionPolicyStrategy exceptionPolicyStrategy, Predicate retryWhile, ScheduledExecutorService executorService) {
049    
050            super(camelContext, output, logger, redeliveryProcessor, redeliveryPolicy, null, null, false, retryWhile, executorService);
051            setExceptionPolicy(exceptionPolicyStrategy);
052        }
053    
054        public void process(Exchange exchange) throws Exception {
055            // just to let the stacktrace reveal that this is a dead letter channel
056            super.process(exchange);
057        }
058    
059        @Override
060        public String toString() {
061            if (output == null) {
062                // if no output then dont do any description
063                return "";
064            }
065            return "DefaultErrorHandler[" + output + "]";
066        }
067    
068    }