LedgerHeaderCache.hpp

#pragma once
 
#include "util/Mutex.hpp"
 
#include <xrpl/protocol/LedgerHeader.h>
 
#include <cstdint>
#include <optional>
#include <shared_mutex>
 
namespace data {

class FetchLedgerCache {
public:
    FetchLedgerCache();

    struct CacheEntry {
        ripple::LedgerHeader ledger;
        uint32_t seq{};

        bool
        operator==(CacheEntry const& other) const
        {
            return ledger.hash == other.ledger.hash && seq == other.seq;
        }
    };

    void
    put(CacheEntry const& cacheEntry);

    std::optional<CacheEntry>
    get() const;
 
private:
    mutable util::Mutex<std::optional<CacheEntry>, std::shared_mutex> mutex_;
};
 
}  // namespace data