memgraph/include/communication/bolt/v1/states/message_parser.hpp

#pragma once

#include "communication/bolt/v1/session.hpp"
#include "communication/bolt/v1/states/state.hpp"
#include "utils/crtp.hpp"

namespace bolt
{

template <class Derived>
class MessageParser : public State, public Crtp<Derived>
{
public:
    MessageParser(Logger &&logger) : logger(std::forward<Logger>(logger)) {}

    State *run(Session &session) override final
    {
        typename Derived::Message message;

        logger.debug("Parsing message");
        auto next = this->derived().parse(session, message);

        // return next state if parsing was unsuccessful (i.e. error state)
        if (next != &this->derived()) return next;

        logger.debug("Executing state");
        return this->derived().execute(session, message);
    }

protected:
    Logger logger;
};
}