util/raft/util.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_RAFT_UTIL_H_
#define OPENCBDC_TX_SRC_RAFT_UTIL_H_
 
#include "serialization.hpp"
#include "util/serialization/util.hpp"
 
namespace cbdc {
    template<typename T, typename B>
    auto make_buffer(const T& obj)
        -> std::enable_if_t<std::is_same_v<B, nuraft::ptr<nuraft::buffer>>,
                            nuraft::ptr<nuraft::buffer>> {
        auto pkt = nuraft::buffer::alloc(cbdc::serialized_size(obj));
        auto ser = cbdc::nuraft_serializer(*pkt);
        ser << obj;
        return pkt;
    }
 
    template<typename T>
    auto from_buffer(nuraft::buffer& buf) -> std::optional<T> {
        auto deser = cbdc::nuraft_serializer(buf);
        T ret{};
        if(!(deser >> ret)) {
            return std::nullopt;
        }
        return ret;
    }
}
 
#endif