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 org.apache.camel.AsyncCallback; 020 import org.apache.camel.Exchange; 021 import org.apache.camel.Processor; 022 import org.apache.camel.StreamCache; 023 import org.apache.camel.processor.DelegateAsyncProcessor; 024 import org.apache.camel.util.MessageHelper; 025 026 /** 027 * An interceptor that converts streams messages into a re-readable format 028 * by wrapping the stream into a {@link StreamCache}. 029 */ 030 public class StreamCachingInterceptor extends DelegateAsyncProcessor { 031 032 public StreamCachingInterceptor() { 033 } 034 035 public StreamCachingInterceptor(Processor processor) { 036 super(processor); 037 } 038 039 @Override 040 public String toString() { 041 return "StreamCachingInterceptor[" + processor + "]"; 042 } 043 044 @Override 045 public boolean process(Exchange exchange, AsyncCallback callback) { 046 StreamCache newBody = exchange.getIn().getBody(StreamCache.class); 047 if (newBody != null) { 048 exchange.getIn().setBody(newBody); 049 } 050 MessageHelper.resetStreamCache(exchange.getIn()); 051 052 return getProcessor().process(exchange, callback); 053 } 054 055 }