ClusterCommunicationService.hpp

#pragma once
 
#include "cluster/Backend.hpp"
#include "cluster/CacheLoaderDecider.hpp"
#include "cluster/Concepts.hpp"
#include "cluster/Metrics.hpp"
#include "cluster/WriterDecider.hpp"
#include "data/BackendInterface.hpp"
#include "data/LedgerCacheLoadingState.hpp"
#include "etl/SystemState.hpp"
#include "etl/WriterState.hpp"
#include "util/config/ConfigDefinition.hpp"
 
#include <boost/asio/cancellation_signal.hpp>
#include <boost/asio/spawn.hpp>
#include <boost/asio/strand.hpp>
#include <boost/asio/thread_pool.hpp>
#include <boost/uuid/uuid.hpp>
 
#include <chrono>
#include <memory>
 
namespace cluster {

class ClusterCommunicationService : public ClusterCommunicationServiceTag {
    // TODO: Use util::async::CoroExecutionContext after https://github.com/XRPLF/clio/issues/1973
    // is implemented
    boost::asio::thread_pool ctx_{1};
    Backend backend_;
    Metrics metrics_;
    WriterDecider writerDecider_;
    CacheLoaderDecider cacheLoaderDecider_;
 
public:
    static constexpr std::chrono::milliseconds kDEFAULT_READ_INTERVAL{1000};
    static constexpr std::chrono::milliseconds kDEFAULT_WRITE_INTERVAL{1000};

    ClusterCommunicationService(
        std::shared_ptr<data::BackendInterface> backend,
        std::unique_ptr<etl::WriterStateInterface> writerState,
        std::unique_ptr<data::LedgerCacheLoadingStateInterface> cacheLoadingState,
        std::chrono::steady_clock::duration readInterval = kDEFAULT_READ_INTERVAL,
        std::chrono::steady_clock::duration writeInterval = kDEFAULT_WRITE_INTERVAL
    );
 
    ~ClusterCommunicationService() override;
 
    ClusterCommunicationService(ClusterCommunicationService&&) = delete;
    ClusterCommunicationService(ClusterCommunicationService const&) = delete;
    ClusterCommunicationService&
    operator=(ClusterCommunicationService&&) = delete;
    ClusterCommunicationService&
    operator=(ClusterCommunicationService const&) = delete;

    void
    run();

    void
    stop();

    struct MakeResult {
        std::unique_ptr<ClusterCommunicationService> service;  
        std::unique_ptr<data::LedgerCacheLoadingStateInterface const>
            cacheLoadingState;  
    };

    static MakeResult
    make(
        util::config::ClioConfigDefinition const& config,
        std::shared_ptr<BackendInterface> backend,
        std::shared_ptr<etl::SystemState> state
    );
};
 
}  // namespace cluster