LedgerData.hpp

#pragma once
 
#include "data/BackendInterface.hpp"
#include "rpc/Errors.hpp"
#include "rpc/common/SpecBackend.hpp"
#include "rpc/common/Types.hpp"
#include "util/log/Logger.hpp"
 
#include <boost/json/array.hpp>
#include <boost/json/conversion.hpp>
#include <boost/json/object.hpp>
#include <boost/json/value.hpp>
#include <rpcspec/handlers/ledger_data/Types.hpp>
#include <xrpl/basics/base_uint.h>
#include <xrpl/protocol/LedgerFormats.h>
 
#include <cstdint>
#include <expected>
#include <memory>
#include <optional>
#include <string>
#include <utility>
 
namespace rpc {

class LedgerDataHandler : public rpc::HandlerFor<rpc::spec::handlers::ledger_data::Input> {
    // dependencies
    std::shared_ptr<BackendInterface> sharedPtrBackend_;
    util::Logger log_{"RPC"};
 
public:
    // constants
    static constexpr auto kLimitBinary = rpc::spec::handlers::ledger_data::kLimitBinary;
    static constexpr auto kLimitJson = rpc::spec::handlers::ledger_data::kLimitJson;

    struct Output {
        uint32_t ledgerIndex{};
        std::string ledgerHash;
        std::optional<boost::json::object> header;
        boost::json::array states;
        std::optional<std::string> marker;
        std::optional<uint32_t> diffMarker;
        std::optional<bool> cacheFull;
        bool validated = true;
    };
 
    using Result = HandlerReturnType<Output>;

    LedgerDataHandler(std::shared_ptr<BackendInterface> sharedPtrBackend)
        : sharedPtrBackend_(std::move(sharedPtrBackend))
    {
    }

    [[nodiscard]] Result
    process(Input const& input, Context const& ctx) const;
 
private:
    friend void
    tag_invoke(boost::json::value_from_tag, boost::json::value& jv, Output const& output);
};
 
}  // namespace rpc