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#pragma once
#include <yt/cpp/mapreduce/interface/io.h>
#include <util/generic/vector.h>
#include <util/generic/ptr.h>
#include <util/stream/file.h>
#include <util/stream/buffered.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
namespace NDetail {
////////////////////////////////////////////////////////////////////////////////
class TJobWriterStream
{
public:
explicit TJobWriterStream(int fd);
explicit TJobWriterStream(const TFile& file);
~TJobWriterStream() = default;
public:
static constexpr size_t BufferSize = 1 << 20;
TFile FDFile;
TUnbufferedFileOutput FDOutput;
TBufferedOutput BufferedOutput;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NDetail
////////////////////////////////////////////////////////////////////////////////
class TJobWriter
: public IProxyOutput
{
public:
explicit TJobWriter(size_t outputTableCount);
explicit TJobWriter(const TVector<TFile>& fileList);
size_t GetBufferMemoryUsage() const override;
size_t GetStreamCount() const override;
IOutputStream* GetStream(size_t tableIndex) const override;
void OnRowFinished(size_t tableIndex) override;
private:
TVector<std::unique_ptr<NDetail::TJobWriterStream>> Streams_;
};
////////////////////////////////////////////////////////////////////////////////
class TSingleStreamJobWriter
: public IProxyOutput
{
public:
explicit TSingleStreamJobWriter(size_t tableIndex);
size_t GetBufferMemoryUsage() const override;
size_t GetStreamCount() const override;
IOutputStream* GetStream(size_t tableIndex) const override;
void OnRowFinished(size_t tableIndex) override;
private:
const size_t TableIndex_;
std::unique_ptr<NDetail::TJobWriterStream> Stream_;
};
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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