status_interface.hpp

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// Copyright (c) 2021 MIT Digital Currency Initiative,
//                    Federal Reserve Bank of Boston
// Distributed under the MIT software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
#ifndef OPENCBDC_TX_SRC_LOCKING_SHARD_STATUS_INTERFACE_H_
#define OPENCBDC_TX_SRC_LOCKING_SHARD_STATUS_INTERFACE_H_
 
#include "util/common/hash.hpp"
 
#include <optional>
#include <variant>
 
namespace cbdc::locking_shard {
    class status_interface {
      public:
        status_interface() = default;
        virtual ~status_interface() = default;
        status_interface(const status_interface&) = default;
        auto operator=(const status_interface&) -> status_interface& = default;
        status_interface(status_interface&&) = default;
        auto operator=(status_interface&&) -> status_interface& = default;
 
        [[nodiscard]] virtual auto check_unspent(const hash_t& uhs_id)
            -> std::optional<bool> = 0;
 
        [[nodiscard]] virtual auto check_tx_id(const hash_t& tx_id)
            -> std::optional<bool> = 0;
    };
}
 
#endif