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[txrequest] GetCandidatePeers

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Needed for a later commit adding logic to ask the TxRequestTracker for a
list of announcers.  These announcers should know the parents of the
transaction they announced.
This commit is contained in:
glozow 2023-03-20 10:37:23 +00:00
parent b1f0f3c288
commit 6951ddcefd
2 changed files with 21 additions and 0 deletions
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18
src/txrequest.cpp
View File

@ -574,6 +574,23 @@ public:
}
}
std::vector<NodeId> GetCandidatePeers(const CTransactionRef& tx) const
{
// Search by txid and, if the tx has a witness, wtxid
std::vector<uint256> hashes{tx->GetHash().ToUint256()};
if (tx->HasWitness()) hashes.emplace_back(tx->GetWitnessHash().ToUint256());
std::vector<NodeId> result_peers;
for (const uint256& txhash : hashes) {
auto it = m_index.get<ByTxHash>().lower_bound(ByTxHashView{txhash, State::CANDIDATE_DELAYED, 0});
while (it != m_index.get<ByTxHash>().end() && it->m_txhash == txhash && it->GetState() != State::COMPLETED) {
result_peers.push_back(it->m_peer);
++it;
}
}
return result_peers;
}
void ReceivedInv(NodeId peer, const GenTxid& gtxid, bool preferred,
std::chrono::microseconds reqtime)
{
@ -721,6 +738,7 @@ size_t TxRequestTracker::CountInFlight(NodeId peer) const { return m_impl->Count
size_t TxRequestTracker::CountCandidates(NodeId peer) const { return m_impl->CountCandidates(peer); }
size_t TxRequestTracker::Count(NodeId peer) const { return m_impl->Count(peer); }
size_t TxRequestTracker::Size() const { return m_impl->Size(); }
std::vector<NodeId> TxRequestTracker::GetCandidatePeers(const CTransactionRef& tx) const { return m_impl->GetCandidatePeers(tx); }
void TxRequestTracker::SanityCheck() const { m_impl->SanityCheck(); }
void TxRequestTracker::PostGetRequestableSanityCheck(std::chrono::microseconds now) const

3
src/txrequest.h
View File

@ -195,6 +195,9 @@ public:
/** Count how many announcements are being tracked in total across all peers and transaction hashes. */
size_t Size() const;
/** For some tx return all peers with non-COMPLETED announcements for its txid or wtxid. The resulting vector may contain duplicate NodeIds. */
std::vector<NodeId> GetCandidatePeers(const CTransactionRef& tx) const;
/** Access to the internal priority computation (testing only) */
uint64_t ComputePriority(const uint256& txhash, NodeId peer, bool preferred) const;