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author | Carl Dong <contact@carldong.me> | 2022-07-12 22:24:31 -0400 |
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committer | Carl Dong <contact@carldong.me> | 2022-07-15 12:26:20 -0400 |
commit | cb3e9a1e3f8d72daaa361fc45dd853775e754b9d (patch) | |
tree | 7d95018b6407a0fafd0d34577dd73f52d858fc21 /src/kernel/mempool_persist.cpp | |
parent | aa306765419f7dbea12b12e15553039835ba0e4d (diff) | |
download | bitcoin-cb3e9a1e3f8d72daaa361fc45dd853775e754b9d.tar.xz |
Move {Load,Dump}Mempool to kernel namespace
Also:
1. Add the newly introduced kernel/mempool_persist.cpp to IWYU CI script
2. Add chrono mapping for iwyu
Diffstat (limited to 'src/kernel/mempool_persist.cpp')
-rw-r--r-- | src/kernel/mempool_persist.cpp | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/src/kernel/mempool_persist.cpp b/src/kernel/mempool_persist.cpp new file mode 100644 index 0000000000..1a1cf2bbdc --- /dev/null +++ b/src/kernel/mempool_persist.cpp @@ -0,0 +1,189 @@ +// Copyright (c) 2022 The Bitcoin Core developers +// Distributed under the MIT software license, see the accompanying +// file COPYING or http://www.opensource.org/licenses/mit-license.php. + +#include <kernel/mempool_persist.h> + +#include <clientversion.h> +#include <consensus/amount.h> +#include <fs.h> +#include <logging.h> +#include <primitives/transaction.h> +#include <serialize.h> +#include <shutdown.h> +#include <streams.h> +#include <sync.h> +#include <txmempool.h> +#include <uint256.h> +#include <util/system.h> +#include <util/time.h> +#include <validation.h> + +#include <chrono> +#include <cstdint> +#include <cstdio> +#include <exception> +#include <functional> +#include <map> +#include <memory> +#include <set> +#include <stdexcept> +#include <utility> +#include <vector> + +using fsbridge::FopenFn; + +namespace kernel { + +static const uint64_t MEMPOOL_DUMP_VERSION = 1; + +bool LoadMempool(CTxMemPool& pool, const fs::path& load_path, CChainState& active_chainstate, FopenFn mockable_fopen_function) +{ + if (load_path.empty()) return false; + + FILE* filestr{mockable_fopen_function(load_path, "rb")}; + CAutoFile file(filestr, SER_DISK, CLIENT_VERSION); + if (file.IsNull()) { + LogPrintf("Failed to open mempool file from disk. Continuing anyway.\n"); + return false; + } + + int64_t count = 0; + int64_t expired = 0; + int64_t failed = 0; + int64_t already_there = 0; + int64_t unbroadcast = 0; + auto now = NodeClock::now(); + + try { + uint64_t version; + file >> version; + if (version != MEMPOOL_DUMP_VERSION) { + return false; + } + uint64_t num; + file >> num; + while (num) { + --num; + CTransactionRef tx; + int64_t nTime; + int64_t nFeeDelta; + file >> tx; + file >> nTime; + file >> nFeeDelta; + + CAmount amountdelta = nFeeDelta; + if (amountdelta) { + pool.PrioritiseTransaction(tx->GetHash(), amountdelta); + } + if (nTime > TicksSinceEpoch<std::chrono::seconds>(now - pool.m_expiry)) { + LOCK(cs_main); + const auto& accepted = AcceptToMemoryPool(active_chainstate, tx, nTime, /*bypass_limits=*/false, /*test_accept=*/false); + if (accepted.m_result_type == MempoolAcceptResult::ResultType::VALID) { + ++count; + } else { + // mempool may contain the transaction already, e.g. from + // wallet(s) having loaded it while we were processing + // mempool transactions; consider these as valid, instead of + // failed, but mark them as 'already there' + if (pool.exists(GenTxid::Txid(tx->GetHash()))) { + ++already_there; + } else { + ++failed; + } + } + } else { + ++expired; + } + if (ShutdownRequested()) + return false; + } + std::map<uint256, CAmount> mapDeltas; + file >> mapDeltas; + + for (const auto& i : mapDeltas) { + pool.PrioritiseTransaction(i.first, i.second); + } + + std::set<uint256> unbroadcast_txids; + file >> unbroadcast_txids; + unbroadcast = unbroadcast_txids.size(); + for (const auto& txid : unbroadcast_txids) { + // Ensure transactions were accepted to mempool then add to + // unbroadcast set. + if (pool.get(txid) != nullptr) pool.AddUnbroadcastTx(txid); + } + } catch (const std::exception& e) { + LogPrintf("Failed to deserialize mempool data on disk: %s. Continuing anyway.\n", e.what()); + return false; + } + + LogPrintf("Imported mempool transactions from disk: %i succeeded, %i failed, %i expired, %i already there, %i waiting for initial broadcast\n", count, failed, expired, already_there, unbroadcast); + return true; +} + +bool DumpMempool(const CTxMemPool& pool, const fs::path& dump_path, FopenFn mockable_fopen_function, bool skip_file_commit) +{ + auto start = SteadyClock::now(); + + std::map<uint256, CAmount> mapDeltas; + std::vector<TxMempoolInfo> vinfo; + std::set<uint256> unbroadcast_txids; + + static Mutex dump_mutex; + LOCK(dump_mutex); + + { + LOCK(pool.cs); + for (const auto &i : pool.mapDeltas) { + mapDeltas[i.first] = i.second; + } + vinfo = pool.infoAll(); + unbroadcast_txids = pool.GetUnbroadcastTxs(); + } + + auto mid = SteadyClock::now(); + + try { + FILE* filestr{mockable_fopen_function(dump_path + ".new", "wb")}; + if (!filestr) { + return false; + } + + CAutoFile file(filestr, SER_DISK, CLIENT_VERSION); + + uint64_t version = MEMPOOL_DUMP_VERSION; + file << version; + + file << (uint64_t)vinfo.size(); + for (const auto& i : vinfo) { + file << *(i.tx); + file << int64_t{count_seconds(i.m_time)}; + file << int64_t{i.nFeeDelta}; + mapDeltas.erase(i.tx->GetHash()); + } + + file << mapDeltas; + + LogPrintf("Writing %d unbroadcast transactions to disk.\n", unbroadcast_txids.size()); + file << unbroadcast_txids; + + if (!skip_file_commit && !FileCommit(file.Get())) + throw std::runtime_error("FileCommit failed"); + file.fclose(); + if (!RenameOver(dump_path + ".new", dump_path)) { + throw std::runtime_error("Rename failed"); + } + auto last = SteadyClock::now(); + + LogPrintf("Dumped mempool: %gs to copy, %gs to dump\n", + Ticks<SecondsDouble>(mid - start), + Ticks<SecondsDouble>(last - mid)); + } catch (const std::exception& e) { + LogPrintf("Failed to dump mempool: %s. Continuing anyway.\n", e.what()); + return false; + } + return true; +} + +} // namespace kernel |