lokinet/llarp/messages/fetch.hpp

#pragma once

#include "common.hpp"

#include <llarp/util/logging/buffer.hpp>

namespace llarp
{
    namespace GossipRCMessage
    {
        inline static std::string serialize(const RouterID& last_sender, const RemoteRC& rc)
        {
            oxenc::bt_dict_producer btdp;

            try
            {
                btdp.append_encoded("rc", rc.view());
                btdp.append("sender", last_sender.ToView());
            }
            catch (...)
            {
                log::error(link_cat, "Error: GossipRCMessage failed to bt encode contents");
            }

            return std::move(btdp).str();
        }
    }  // namespace GossipRCMessage

    namespace FetchRCMessage
    {
        inline const auto INVALID_REQUEST =
            messages::serialize_response({{messages::STATUS_KEY, "Invalid relay ID requested"}});

        inline static std::string serialize(
            std::chrono::system_clock::time_point since, const std::vector<RouterID>& explicit_ids)
        {
            oxenc::bt_dict_producer btdp;

            try
            {
                {
                    auto sublist = btdp.append_list("explicit_ids");

                    for (const auto& rid : explicit_ids)
                        sublist.append(rid.ToView());
                }

                btdp.append("since", since.time_since_epoch() / 1s);
            }
            catch (...)
            {
                log::error(link_cat, "Error: RCFetchMessage failed to bt encode contents!");
            }

            return std::move(btdp).str();
        }
    }  // namespace FetchRCMessage

    namespace BootstrapFetchMessage
    {
        // the LocalRC is converted to a RemoteRC type to send to the bootstrap seed
        inline static std::string serialize(std::optional<LocalRC> local_rc, size_t quantity)
        {
            oxenc::bt_dict_producer btdp;

            if (local_rc)
            {
                log::critical(logcat, "Serializing localRC: {}", oxenc::to_hex(local_rc->view()));
                btdp.append_encoded("local", oxen::quic::to_sv(local_rc->view()));
            }

            btdp.append("quantity", quantity);

            return std::move(btdp).str();
        }

        inline static std::string serialize_response(const std::vector<RouterID>& explicit_ids)
        {
            oxenc::bt_dict_producer btdp;

            try
            {
                auto sublist = btdp.append_list("explicit_ids");

                for (const auto& rid : explicit_ids)
                    sublist.append(rid.ToView());
            }
            catch (...)
            {
                log::error(link_cat, "Error: BootstrapFetchMessage failed to bt encode contents!");
            }

            return std::move(btdp).str();
        }
    }  // namespace BootstrapFetchMessage

    namespace FetchRIDMessage
    {
        inline constexpr auto INVALID_REQUEST = "Invalid relay ID requested to relay response from."sv;

        inline static std::string serialize(const RouterID& source)
        {
            oxenc::bt_dict_producer btdp;

            try
            {
                btdp.append("source", source.ToView());
            }
            catch (...)
            {
                log::error(link_cat, "Error: FetchRIDMessage failed to bt encode contents!");
            }

            return std::move(btdp).str();
        }
    }  // namespace FetchRIDMessage

}  // namespace llarp