/**
* 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.InputStream;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
import org.apache.camel.Exchange;
import org.apache.camel.converter.stream.OutputStreamBuilder;
import org.apache.camel.spi.DataFormat;
import org.apache.camel.spi.DataFormatName;
import org.apache.camel.util.IOHelper;
/**
* GZip {@link org.apache.camel.spi.DataFormat} for reading/writing data using gzip.
*/
public class GzipDataFormat extends org.apache.camel.support.ServiceSupport implements DataFormat, DataFormatName {
@Override
public String getDataFormatName() {
return "gzip";
}
public void marshal(final Exchange exchange, final Object graph, final OutputStream stream) throws Exception {
InputStream is = exchange.getContext().getTypeConverter().mandatoryConvertTo(InputStream.class, exchange, graph);
GZIPOutputStream zipOutput = new GZIPOutputStream(stream);
try {
IOHelper.copy(is, zipOutput);
} finally {
// must close all input streams
IOHelper.close(is, zipOutput);
}
}
public Object unmarshal(final Exchange exchange, final InputStream inputStream) throws Exception {
GZIPInputStream unzipInput = null;
OutputStreamBuilder osb = OutputStreamBuilder.withExchange(exchange);
try {
unzipInput = new GZIPInputStream(inputStream);
IOHelper.copy(unzipInput, osb);
return osb.build();
} finally {
// must close all input streams
IOHelper.close(osb, unzipInput, inputStream);
}
}
@Override
protected void doStart() throws Exception {
// noop
}
@Override
protected void doStop() throws Exception {
// noop
}
}