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// Copyright 2016 Yahoo Inc. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
#pragma once
#include "indexmaintainer.h"
#include <vespa/searchcorespi/flush/iflushtarget.h>
namespace searchcorespi {
namespace index {
/**
* Flush target for flushing a memory index in an IndexMaintainer.
**/
class IndexFlushTarget : public IFlushTarget {
private:
IndexMaintainer &_indexMaintainer;
IndexMaintainer::FlushStats _flushStats;
uint32_t _numFrozenMemoryIndexes;
uint32_t _maxFrozenMemoryIndexes;
FlushStats _lastStats;
public:
IndexFlushTarget(IndexMaintainer &indexMaintainer);
~IndexFlushTarget();
// Implements IFlushTarget
virtual MemoryGain getApproxMemoryGain() const override;
virtual DiskGain getApproxDiskGain() const override;
virtual SerialNum getFlushedSerialNum() const override;
virtual Time getLastFlushTime() const override;
virtual bool needUrgentFlush() const override;
virtual Task::UP initFlush(SerialNum currentSerial) override;
virtual FlushStats getLastFlushStats() const override { return _lastStats; }
virtual uint64_t getApproxBytesToWriteToDisk() const override;
};
} // namespace index
} // namespace searchcorespi
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