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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 <vespa/searchcore/proton/common/hw_info.h>
#include <vespa/searchcorespi/flush/iflushtarget.h>
#include <vespa/searchlib/common/tunefileinfo.h>
namespace search { class AttributeVector; }
namespace search::common { class FileHeaderContext; }
namespace vespalib { class ISequencedTaskExecutor; }
namespace proton {
class AttributeDirectory;
class TransientResourceUsage;
/**
* Implementation of IFlushTarget interface for attribute vectors.
*/
class FlushableAttribute : public searchcorespi::LeafFlushTarget
{
private:
/**
* Task performing the actual flushing to disk.
**/
class Flusher;
using AttributeVectorSP = std::shared_ptr<search::AttributeVector>;
using FlushStats = searchcorespi::FlushStats;
AttributeVectorSP _attr;
bool _cleanUpAfterFlush;
FlushStats _lastStats;
const search::TuneFileAttributes _tuneFileAttributes;
const search::common::FileHeaderContext &_fileHeaderContext;
vespalib::ISequencedTaskExecutor &_attributeFieldWriter;
HwInfo _hwInfo;
std::shared_ptr<AttributeDirectory> _attrDir;
double _replay_operation_cost;
Task::UP internalInitFlush(SerialNum currentSerial);
public:
using SP = std::shared_ptr<FlushableAttribute>;
/**
* Creates a new instance using the given attribute vector and the
* given base dir where all attribute vectors are located.
*
* fileHeaderContext must be kept alive by caller.
**/
FlushableAttribute(AttributeVectorSP attr,
const std::shared_ptr<AttributeDirectory> &attrDir,
const search::TuneFileAttributes &tuneFileAttributes,
const search::common::FileHeaderContext &
fileHeaderContext,
vespalib::ISequencedTaskExecutor &attributeFieldWriter,
const HwInfo &hwInfo);
virtual ~FlushableAttribute();
void setCleanUpAfterFlush(bool cleanUp) { _cleanUpAfterFlush = cleanUp; }
TransientResourceUsage get_transient_resource_usage() const;
// Implements IFlushTarget
virtual MemoryGain getApproxMemoryGain() const override;
virtual DiskGain getApproxDiskGain() const override;
virtual Time getLastFlushTime() const override;
virtual SerialNum getFlushedSerialNum() const override;
virtual Task::UP initFlush(SerialNum currentSerial, std::shared_ptr<search::IFlushToken> flush_token) override;
virtual FlushStats getLastFlushStats() const override { return _lastStats; }
virtual uint64_t getApproxBytesToWriteToDisk() const override;
virtual double get_replay_operation_cost() const override;
};
} // namespace proton
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