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// 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 <node/mempool_args.h>
#include <kernel/mempool_limits.h>
#include <kernel/mempool_options.h>
#include <chainparams.h>
#include <consensus/amount.h>
#include <logging.h>
#include <policy/feerate.h>
#include <policy/policy.h>
#include <tinyformat.h>
#include <util/error.h>
#include <util/moneystr.h>
#include <util/system.h>
#include <util/translation.h>
#include <chrono>
#include <memory>
using kernel::MemPoolLimits;
using kernel::MemPoolOptions;
namespace {
void ApplyArgsManOptions(const ArgsManager& argsman, MemPoolLimits& mempool_limits)
{
mempool_limits.ancestor_count = argsman.GetIntArg("-limitancestorcount", mempool_limits.ancestor_count);
if (auto vkb = argsman.GetIntArg("-limitancestorsize")) mempool_limits.ancestor_size_vbytes = *vkb * 1'000;
mempool_limits.descendant_count = argsman.GetIntArg("-limitdescendantcount", mempool_limits.descendant_count);
if (auto vkb = argsman.GetIntArg("-limitdescendantsize")) mempool_limits.descendant_size_vbytes = *vkb * 1'000;
}
}
std::optional<bilingual_str> ApplyArgsManOptions(const ArgsManager& argsman, const CChainParams& chainparams, MemPoolOptions& mempool_opts)
{
mempool_opts.check_ratio = argsman.GetIntArg("-checkmempool", mempool_opts.check_ratio);
if (auto mb = argsman.GetIntArg("-maxmempool")) mempool_opts.max_size_bytes = *mb * 1'000'000;
if (auto hours = argsman.GetIntArg("-mempoolexpiry")) mempool_opts.expiry = std::chrono::hours{*hours};
// incremental relay fee sets the minimum feerate increase necessary for replacement in the mempool
// and the amount the mempool min fee increases above the feerate of txs evicted due to mempool limiting.
if (argsman.IsArgSet("-incrementalrelayfee")) {
if (std::optional<CAmount> inc_relay_fee = ParseMoney(argsman.GetArg("-incrementalrelayfee", ""))) {
mempool_opts.incremental_relay_feerate = CFeeRate{inc_relay_fee.value()};
} else {
return AmountErrMsg("incrementalrelayfee", argsman.GetArg("-incrementalrelayfee", ""));
}
}
if (argsman.IsArgSet("-minrelaytxfee")) {
if (std::optional<CAmount> min_relay_feerate = ParseMoney(argsman.GetArg("-minrelaytxfee", ""))) {
// High fee check is done afterward in CWallet::Create()
mempool_opts.min_relay_feerate = CFeeRate{min_relay_feerate.value()};
} else {
return AmountErrMsg("minrelaytxfee", argsman.GetArg("-minrelaytxfee", ""));
}
} else if (mempool_opts.incremental_relay_feerate > mempool_opts.min_relay_feerate) {
// Allow only setting incremental fee to control both
mempool_opts.min_relay_feerate = mempool_opts.incremental_relay_feerate;
LogPrintf("Increasing minrelaytxfee to %s to match incrementalrelayfee\n", mempool_opts.min_relay_feerate.ToString());
}
// Feerate used to define dust. Shouldn't be changed lightly as old
// implementations may inadvertently create non-standard transactions
if (argsman.IsArgSet("-dustrelayfee")) {
if (std::optional<CAmount> parsed = ParseMoney(argsman.GetArg("-dustrelayfee", ""))) {
mempool_opts.dust_relay_feerate = CFeeRate{parsed.value()};
} else {
return AmountErrMsg("dustrelayfee", argsman.GetArg("-dustrelayfee", ""));
}
}
mempool_opts.permit_bare_multisig = argsman.GetBoolArg("-permitbaremultisig", DEFAULT_PERMIT_BAREMULTISIG);
if (argsman.GetBoolArg("-datacarrier", DEFAULT_ACCEPT_DATACARRIER)) {
mempool_opts.max_datacarrier_bytes = argsman.GetIntArg("-datacarriersize", MAX_OP_RETURN_RELAY);
} else {
mempool_opts.max_datacarrier_bytes = std::nullopt;
}
mempool_opts.require_standard = !argsman.GetBoolArg("-acceptnonstdtxn", !chainparams.RequireStandard());
if (!chainparams.IsTestChain() && !mempool_opts.require_standard) {
return strprintf(Untranslated("acceptnonstdtxn is not currently supported for %s chain"), chainparams.NetworkIDString());
}
mempool_opts.full_rbf = argsman.GetBoolArg("-mempoolfullrbf", mempool_opts.full_rbf);
ApplyArgsManOptions(argsman, mempool_opts.limits);
return std::nullopt;
}
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