io.jsonwebtoken.impl.compression.GzipCompressionCodec Maven / Gradle / Ivy
/*
* Copyright (C) 2015 jsonwebtoken.io
*
* Licensed 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 io.jsonwebtoken.impl.compression;
import io.jsonwebtoken.CompressionCodec;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.GZIPInputStream;
import java.util.zip.GZIPOutputStream;
/**
* Codec implementing the gzip compression algorithm.
*
* @since 0.6.0
*/
public class GzipCompressionCodec extends AbstractCompressionCodec implements CompressionCodec {
private static final String GZIP = "GZIP";
private static final StreamWrapper WRAPPER = new StreamWrapper() {
@Override
public OutputStream wrap(OutputStream out) throws IOException {
return new GZIPOutputStream(out);
}
};
@Override
public String getAlgorithmName() {
return GZIP;
}
@Override
protected byte[] doCompress(byte[] payload) throws IOException {
return writeAndClose(payload, WRAPPER);
}
@Override
protected byte[] doDecompress(byte[] compressed) throws IOException {
return readAndClose(new GZIPInputStream(new ByteArrayInputStream(compressed)));
}
}