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#pragma once
#include "Api.h"
#include "IStorageBackend.h"
#include <cstdint>
#include <optional>
#include <string>
#include <unordered_map>
#include <vector>
/**
* @file InMemoryBackend.h
* @brief In-process KV storage backend backed by an unordered_map.
*
* Intended for unit tests where SQLite is not appropriate. Data does not
* survive process exit and is not thread-safe.
*
* Relation membership is tracked by the Merkle class, not this backend.
*/
namespace nt {
class InMemoryBackend : public IStorageBackend {
public:
std::string Put(std::vector<uint8_t> value) override;
std::optional<std::vector<uint8_t>> Get(const std::string& hash) override;
private:
std::unordered_map<std::string, std::vector<uint8_t>> kv_;
};
} // namespace nt
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