| /** |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package org.apache.camel.builder; |
| |
| import org.apache.camel.Endpoint; |
| import org.apache.camel.ExchangePattern; |
| import org.apache.camel.LoggingLevel; |
| import org.apache.camel.NoSuchEndpointException; |
| import org.apache.camel.Predicate; |
| import org.apache.camel.Processor; |
| import org.apache.camel.processor.CamelLogger; |
| import org.apache.camel.processor.DeadLetterChannel; |
| import org.apache.camel.processor.RedeliveryPolicy; |
| import org.apache.camel.processor.SendProcessor; |
| import org.apache.camel.spi.RouteContext; |
| import org.apache.camel.util.ObjectHelper; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * A builder of a <a |
| * href="http://camel.apache.org/dead-letter-channel.html">Dead Letter |
| * Channel</a> |
| * |
| * @version |
| */ |
| public class DeadLetterChannelBuilder extends DefaultErrorHandlerBuilder { |
| |
| public DeadLetterChannelBuilder() { |
| // no-arg constructor used by Spring DSL |
| } |
| |
| public DeadLetterChannelBuilder(Endpoint deadLetter) { |
| setDeadLetter(deadLetter); |
| } |
| |
| public DeadLetterChannelBuilder(String uri) { |
| setDeadLetterUri(uri); |
| } |
| |
| public Processor createErrorHandler(RouteContext routeContext, Processor processor) throws Exception { |
| validateDeadLetterUri(routeContext); |
| |
| DeadLetterChannel answer = new DeadLetterChannel(routeContext.getCamelContext(), processor, getLogger(), getOnRedelivery(), |
| getRedeliveryPolicy(), getExceptionPolicyStrategy(), getFailureProcessor(), getDeadLetterUri(), isUseOriginalMessage(), |
| getRetryWhilePolicy(routeContext.getCamelContext()), getExecutorServiceRef()); |
| // configure error handler before we can use it |
| configure(answer); |
| return answer; |
| } |
| |
| public boolean supportTransacted() { |
| return false; |
| } |
| |
| // Properties |
| // ------------------------------------------------------------------------- |
| |
| public Processor getFailureProcessor() { |
| if (failureProcessor == null) { |
| // force MEP to be InOnly so when sending to DLQ we would not expect a reply if the MEP was InOut |
| failureProcessor = new SendProcessor(deadLetter, ExchangePattern.InOnly); |
| } |
| return failureProcessor; |
| } |
| |
| protected void validateDeadLetterUri(RouteContext routeContext) { |
| if (deadLetter == null) { |
| ObjectHelper.notEmpty(deadLetterUri, "deadLetterUri", this); |
| deadLetter = routeContext.getCamelContext().getEndpoint(deadLetterUri); |
| if (deadLetter == null) { |
| throw new NoSuchEndpointException(deadLetterUri); |
| } |
| } |
| } |
| |
| @Override |
| protected RedeliveryPolicy createRedeliveryPolicy() { |
| return new RedeliveryPolicy(); |
| } |
| |
| protected CamelLogger createLogger() { |
| return new CamelLogger(LoggerFactory.getLogger(DeadLetterChannel.class), LoggingLevel.ERROR); |
| } |
| |
| @Override |
| public String toString() { |
| return "DeadLetterChannelBuilder(" + deadLetterUri + ")"; |
| } |
| } |