RuntimeWaterDriverCheckpoint.hpp

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// SPDX-License-Identifier: Apache-2.0

 
#pragma once
#include <cstdint>
#include <memory>
#include <string>
 
namespace openswmm::twoD {
class RuntimeWaterDriverCheckpoint {
public:
    struct Snapshot {
        uint64_t next_sequence = 0;
        double next_update_seconds = -1; // -1 means exhausted; otherwise elapsed seconds
        std::string state;               // driver schema, cursor, pending updates and mutable state
    };
    class PreparedRestore {
    public:
        virtual ~PreparedRestore() = default;
        virtual void install() noexcept = 0;
    };

    virtual ~RuntimeWaterDriverCheckpoint() = default;
    virtual std::string identity() const = 0;
    virtual double nextUpdateSeconds() const noexcept = 0;
    virtual Snapshot capture(double completed_seconds) const = 0;
    virtual std::unique_ptr<PreparedRestore> prepareRestore(const Snapshot&,
                                                            double completed_seconds) const = 0;
};
}