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.impl;
018
019 import java.io.ByteArrayOutputStream;
020 import java.io.InputStream;
021 import java.io.OutputStream;
022 import java.util.zip.GZIPInputStream;
023 import java.util.zip.GZIPOutputStream;
024
025 import org.apache.camel.Exchange;
026 import org.apache.camel.spi.DataFormat;
027 import org.apache.camel.util.ExchangeHelper;
028 import org.apache.camel.util.IOHelper;
029
030 public class GzipDataFormat implements DataFormat {
031
032 public void marshal(Exchange exchange, Object graph, OutputStream stream) throws Exception {
033 InputStream is = exchange.getContext().getTypeConverter().mandatoryConvertTo(InputStream.class, graph);
034
035 GZIPOutputStream zipOutput = new GZIPOutputStream(stream);
036 try {
037 IOHelper.copy(is, zipOutput);
038 } finally {
039 zipOutput.close();
040 }
041
042 }
043
044 public Object unmarshal(Exchange exchange, InputStream stream) throws Exception {
045 InputStream is = ExchangeHelper.getMandatoryInBody(exchange, InputStream.class);
046 GZIPInputStream unzipInput = new GZIPInputStream(is);
047
048 // Create an expandable byte array to hold the inflated data
049 ByteArrayOutputStream bos = new ByteArrayOutputStream();
050 IOHelper.copy(unzipInput, bos);
051 return bos.toByteArray();
052 }
053
054 }