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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.dispatch.rpc;
import com.yahoo.compress.CompressionType;
import com.yahoo.compress.Compressor;
import com.yahoo.processing.request.CompoundName;
import com.yahoo.search.Query;
/**
* Implement interface to compress/decompress request/response
*
* @author baldersheim
*/
public class CompressService implements CompressPayload {
/** The compression method which will be used with rpc dispatch. "lz4" (default) and "none" is supported. */
public static final CompoundName dispatchCompression = CompoundName.from("dispatch.compression");
private final Compressor compressor = new Compressor(CompressionType.LZ4, 5, 0.95, 256);
@Override
public Compressor.Compression compress(Query query, byte[] payload) {
CompressionType compression = CompressionType.valueOf(query.properties().getString(dispatchCompression, "LZ4").toUpperCase());
return compressor.compress(compression, payload);
}
@Override
public byte[] decompress(Client.ProtobufResponse response) {
CompressionType compression = CompressionType.valueOf(response.compression());
return compressor.decompress(response.compressedPayload(), compression, response.uncompressedSize());
}
Compressor compressor() { return compressor; }
}
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