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.interceptor; 018 019 import java.util.List; 020 021 import org.apache.camel.Exchange; 022 import org.apache.camel.NoTypeConversionAvailableException; 023 import org.apache.camel.Processor; 024 import org.apache.camel.converter.stream.StreamCache; 025 import org.apache.camel.model.InterceptorRef; 026 import org.apache.camel.model.InterceptorType; 027 import org.apache.camel.processor.Interceptor; 028 029 /** 030 * {@link Interceptor} that converts a message into a re-readable format 031 */ 032 public class StreamCachingInterceptor extends Interceptor { 033 034 public StreamCachingInterceptor() { 035 super(); 036 setInterceptorLogic(new Processor() { 037 public void process(Exchange exchange) throws Exception { 038 try { 039 StreamCache newBody = exchange.getIn().getBody(StreamCache.class); 040 if (newBody != null) { 041 newBody.reset(); 042 exchange.getIn().setBody(newBody); 043 } 044 } catch (NoTypeConversionAvailableException ex) { 045 // ignore if in is not of StreamCache type 046 } 047 proceed(exchange); 048 } 049 }); 050 } 051 052 public StreamCachingInterceptor(Processor processor) { 053 this(); 054 setProcessor(processor); 055 } 056 057 @Override 058 public String toString() { 059 return "StreamCachingInterceptor(" + processor + ")"; 060 } 061 062 /** 063 * Remove the {@link StreamCachingInterceptor} type of interceptor from the given list of interceptors 064 * 065 * @param interceptors the list of interceptors 066 */ 067 public static void noStreamCaching(List<InterceptorType> interceptors) { 068 for (int i = 0; i < interceptors.size(); i++) { 069 InterceptorType interceptor = interceptors.get(i); 070 if (interceptor instanceof InterceptorRef 071 && ((InterceptorRef)interceptor).getInterceptor() instanceof StreamCachingInterceptor) { 072 interceptors.remove(interceptor); 073 } 074 } 075 } 076 }