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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 "iattributefilewriter.h"
#include <vespa/vespalib/stllike/string.h>
class FastOS_FileInterface;
namespace vespalib { class GenericHeader; }
namespace search {
namespace common { class FileHeaderContext; }
namespace attribute { class AttributeHeader; }
class TuneFileAttributes;
/*
* Class to write to a single attribute vector file. Used by
* AttributeFileSaveTarget.
*/
class AttributeFileWriter : public IAttributeFileWriter
{
std::unique_ptr<FastOS_FileInterface> _file;
const TuneFileAttributes &_tuneFileAttributes;
const search::common::FileHeaderContext &_fileHeaderContext;
const attribute::AttributeHeader &_header;
vespalib::string _desc;
uint64_t _fileBitSize;
void addTags(vespalib::GenericHeader &header);
void writeHeader();
public:
AttributeFileWriter(const TuneFileAttributes &tuneFileAttributes,
const search::common::FileHeaderContext & fileHeaderContext,
const attribute::AttributeHeader &header,
const vespalib::string &desc);
~AttributeFileWriter();
Buffer allocBuf(size_t size) override;
void writeBuf(Buffer buf) override;
std::unique_ptr<BufferWriter> allocBufferWriter() override;
bool open(const vespalib::string &fileName);
void close();
};
} // namespace search
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