NodeFamily.cpp

#include <xrpld/shamap/NodeFamily.h>
 
#include <xrpld/app/ledger/InboundLedger.h>
#include <xrpld/app/ledger/InboundLedgers.h>
#include <xrpld/app/ledger/LedgerMaster.h>
#include <xrpld/app/main/Application.h>
#include <xrpld/app/main/CollectorManager.h>
#include <xrpld/app/main/Tuning.h>
#include <xrpld/core/Config.h>
 
#include <xrpl/basics/Log.h>
#include <xrpl/basics/base_uint.h>
#include <xrpl/basics/chrono.h>
#include <xrpl/shamap/FullBelowCache.h>
#include <xrpl/shamap/TreeNodeCache.h>
 
#include <chrono>
#include <cstdint>
#include <memory>
#include <mutex>
 
namespace xrpl {
 
NodeFamily::NodeFamily(Application& app, CollectorManager& cm)
    : app_(app)
    , db_(app.getNodeStore())
    , j_(app.getJournal("NodeFamily"))
    , fbCache_(
          std::make_shared<FullBelowCache>(
              "Node family full below cache",
              stopwatch(),
              app.getJournal("NodeFamilyFulLBelowCache"),
              cm.collector(),
              kFullBelowTargetSize,
              kFullBelowExpiration))
    , tnCache_(
          std::make_shared<TreeNodeCache>(
              "Node family tree node cache",
              app.config().getValueFor(SizedItem::TreeCacheSize),
              std::chrono::seconds(app.config().getValueFor(SizedItem::TreeCacheAge)),
              stopwatch(),
              j_))
{
}
 
void
NodeFamily::sweep()
{
    fbCache_->sweep();
    tnCache_->sweep();
}
 
void
NodeFamily::reset()
{
    {
        std::scoped_lock const lock(maxSeqMutex_);
        maxSeq_ = 0;
    }
 
    (*fbCache_).reset();
    (*tnCache_).reset();
}
 
void
NodeFamily::missingNodeAcquireBySeq(std::uint32_t seq, uint256 const& nodeHash)
{
    JLOG(j_.error()) << "Missing node in " << seq;
    std::unique_lock<std::mutex> lock(maxSeqMutex_);
    if (maxSeq_ == 0)
    {
        maxSeq_ = seq;
 
        do
        {
            // Try to acquire the most recent missing ledger
            seq = maxSeq_;
 
            lock.unlock();
 
            // This can invoke the missing node handler
            acquire(app_.getLedgerMaster().getHashBySeq(seq), seq);
 
            lock.lock();
        } while (maxSeq_ != seq);
    }
    else if (maxSeq_ < seq)
    {
        // We found a more recent ledger with a missing node
        maxSeq_ = seq;
    }
}
 
void
NodeFamily::acquire(uint256 const& hash, std::uint32_t seq)
{
    if (hash.isNonZero())
    {
        JLOG(j_.error()) << "Missing node in " << to_string(hash);
 
        app_.getInboundLedgers().acquire(hash, seq, InboundLedger::Reason::GENERIC);
    }
}
 
}  // namespace xrpl