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#pragma once
#include <optional>
#include <util/system/types.h>
namespace NKikimr {
namespace NMiniKQL {
class TWatermarkTracker {
public:
TWatermarkTracker(ui64 lag, ui64 granularity);
std::optional<ui64> HandleNextEventTime(ui64 ts);
private:
ui64 CalcNextEventWithWatermark(ui64 ts);
std::optional<ui64> CalcLastWatermark();
private:
ui64 NextEventWithWatermark = 0;
const ui64 Delay;
const ui64 Granularity;
};
} // NMiniKQL
} // NKikimr
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