/
GzipDataFormat.java
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/
GzipDataFormat.java
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/**
* 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.impl;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import org.apache.camel.Exchange;
import org.apache.camel.spi.DataFormat;
import org.apache.camel.util.ExchangeHelper;
import org.apache.camel.util.IOHelper;
public class GzipDataFormat implements DataFormat {
public void marshal(Exchange exchange, Object graph, OutputStream stream) throws Exception {
InputStream is = exchange.getContext().getTypeConverter().mandatoryConvertTo(InputStream.class, graph);
GZIPOutputStream zipOutput = new GZIPOutputStream(stream);
try {
IOHelper.copy(is, zipOutput);
} finally {
IOHelper.close(is);
IOHelper.close(zipOutput);
}
}
public Object unmarshal(Exchange exchange, InputStream stream) throws Exception {
InputStream is = ExchangeHelper.getMandatoryInBody(exchange, InputStream.class);
GZIPInputStream unzipInput = new GZIPInputStream(is);
// Create an expandable byte array to hold the inflated data
ByteArrayOutputStream bos = new ByteArrayOutputStream();
try {
IOHelper.copy(unzipInput, bos);
return bos.toByteArray();
} finally {
IOHelper.close(unzipInput);
}
}
}