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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "ichunk.h"
#include <vespa/vespalib/util/compressionconfig.h>
namespace search::transactionlog {
/// Current default chunk serialisation format
class XXH64NoneChunk : public IChunk {
protected:
Encoding onEncode(nbostream &os) const override;
void onDecode(nbostream &is) override;
public:
};
/// TODO Legacy chunk serialisation format to be removed soon.
class CCITTCRC32NoneChunk : public IChunk {
protected:
Encoding onEncode(nbostream &os) const override;
void onDecode(nbostream &is) override;
public:
};
/// Future default chunk serialisation format
class XXH64CompressedChunk : public IChunk {
public:
using CompressionConfig = vespalib::compression::CompressionConfig;
XXH64CompressedChunk(CompressionConfig::Type, uint8_t level);
~XXH64CompressedChunk() override;
protected:
void decompress(nbostream & os, uint32_t uncompressedLen);
Encoding compress(nbostream & os, Encoding::Crc crc) const;
Encoding onEncode(nbostream &os) const override;
void onDecode(nbostream &is) override;
private:
CompressionConfig::Type _type;
uint8_t _level;
vespalib::alloc::Alloc _backing;
};
}
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