diff --git a/src/bench/coin_selection.cpp b/src/bench/coin_selection.cpp index d7d0e610ef..857a14704f 100644 --- a/src/bench/coin_selection.cpp +++ b/src/bench/coin_selection.cpp @@ -51,7 +51,10 @@ static void CoinSelection(benchmark::Bench& bench) } const CoinEligibilityFilter filter_standard(1, 6, 0); - const CoinSelectionParams coin_selection_params(true, 34, 148, CFeeRate(0), 0, false); + const CoinSelectionParams coin_selection_params(/* use_bnb= */ true, /* change_output_size= */ 34, + /* change_spend_size= */ 148, /* effective_feerate= */ CFeeRate(0), + /* long_term_feerate= */ CFeeRate(0), /* discard_feerate= */ CFeeRate(0), + /* tx_no_inputs_size= */ 0, /* avoid_partial= */ false); bench.run([&] { std::set setCoinsRet; CAmountMap mapValueRet; diff --git a/src/wallet/test/coinselector_tests.cpp b/src/wallet/test/coinselector_tests.cpp index b2ca3cd1d1..bcbb928f46 100644 --- a/src/wallet/test/coinselector_tests.cpp +++ b/src/wallet/test/coinselector_tests.cpp @@ -35,7 +35,10 @@ static CAmount balance = 0; CoinEligibilityFilter filter_standard(1, 6, 0); CoinEligibilityFilter filter_confirmed(1, 1, 0); CoinEligibilityFilter filter_standard_extra(6, 6, 0); -CoinSelectionParams coin_selection_params(false, 0, 0, CFeeRate(0), 0, false); +CoinSelectionParams coin_selection_params(/* use_bnb= */ false, /* change_output_size= */ 0, + /* change_spend_size= */ 0, /* effective_feerate= */ CFeeRate(0), + /* long_term_feerate= */ CFeeRate(0), /* discard_feerate= */ CFeeRate(0), + /* tx_no_inputs_size= */ 0, /* avoid_partial= */ false); // ELEMENTS: helper function wrapping a single-asset call to SelectCoinsMinConf static bool SimpleSelectCoinsMinConf(const CWallet& wallet, const CAmount& nTargetValue, const CoinEligibilityFilter& eligibility_filter, std::vector coins, @@ -284,7 +287,10 @@ BOOST_AUTO_TEST_CASE(bnb_search_test) } // Make sure that effective value is working in SelectCoinsMinConf when BnB is used - CoinSelectionParams coin_selection_params_bnb(true, 0, 0, CFeeRate(3000), 0, false); + CoinSelectionParams coin_selection_params_bnb(/* use_bnb= */ true, /* change_output_size= */ 0, + /* change_spend_size= */ 0, /* effective_feerate= */ CFeeRate(3000), + /* long_term_feerate= */ CFeeRate(1000), /* discard_feerate= */ CFeeRate(1000), + /* tx_no_inputs_size= */ 0, /* avoid_partial= */ false); CoinSet setCoinsRet; CAmount nValueRet; bool bnb_used; @@ -316,7 +322,7 @@ BOOST_AUTO_TEST_CASE(bnb_search_test) CCoinControl coin_control; coin_control.fAllowOtherInputs = true; coin_control.Select(COutPoint(vCoins.at(0).tx->GetHash(), vCoins.at(0).i)); - coin_selection_params_bnb.effective_fee = CFeeRate(0); + coin_selection_params_bnb.m_effective_feerate = CFeeRate(0); CAmountMap mapTargetValue; mapTargetValue[CAsset()] = 10 * CENT; CAmountMap mapValueRet; @@ -657,8 +663,14 @@ BOOST_AUTO_TEST_CASE(SelectCoins_test) CAmount target = rand.randrange(balance - 1000) + 1000; // Perform selection - CoinSelectionParams coin_selection_params_knapsack(false, 34, 148, CFeeRate(0), 0, false); - CoinSelectionParams coin_selection_params_bnb(true, 34, 148, CFeeRate(0), 0, false); + CoinSelectionParams coin_selection_params_knapsack(/* use_bnb= */ false, /* change_output_size= */ 34, + /* change_spend_size= */ 148, /* effective_feerate= */ CFeeRate(0), + /* long_term_feerate= */ CFeeRate(0), /* discard_feerate= */ CFeeRate(0), + /* tx_no_inputs_size= */ 0, /* avoid_partial= */ false); + CoinSelectionParams coin_selection_params_bnb(/* use_bnb= */ true, /* change_output_size= */ 34, + /* change_spend_size= */ 148, /* effective_feerate= */ CFeeRate(0), + /* long_term_feerate= */ CFeeRate(0), /* discard_feerate= */ CFeeRate(0), + /* tx_no_inputs_size= */ 0, /* avoid_partial= */ false); CoinSet out_set; CAmount out_value = 0; bool bnb_used = false; diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index e0fcfaa9e0..4327eec7a7 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -2486,20 +2486,14 @@ bool CWallet::SelectCoinsMinConf(const CAmountMap& mapTargetValue, const CoinEli mapValueRet.clear(); if (coin_selection_params.use_bnb && mapTargetValue.size() == 1) { - // Get long term estimate - FeeCalculation feeCalc; - CCoinControl temp; - temp.m_confirm_target = 1008; - CFeeRate long_term_feerate = GetMinimumFeeRate(*this, temp, &feeCalc); - // Get the feerate for effective value. // When subtracting the fee from the outputs, we want the effective feerate to be 0 CFeeRate effective_feerate{0}; if (!coin_selection_params.m_subtract_fee_outputs) { - effective_feerate = coin_selection_params.effective_fee; + effective_feerate = coin_selection_params.m_effective_feerate; } - std::vector groups = GroupOutputs(coins, !coin_selection_params.m_avoid_partial_spends, effective_feerate, long_term_feerate, eligibility_filter, true /* positive_only */); + std::vector groups = GroupOutputs(coins, !coin_selection_params.m_avoid_partial_spends, effective_feerate, coin_selection_params.m_long_term_feerate, eligibility_filter, true /* positive_only */); // ELEMENTS: CAsset asset = mapTargetValue.begin()->first; @@ -2522,10 +2516,10 @@ bool CWallet::SelectCoinsMinConf(const CAmountMap& mapTargetValue, const CoinEli // END ELEMENTS // Calculate cost of change - CAmount cost_of_change = GetDiscardRate(*this).GetFee(coin_selection_params.change_spend_size) + coin_selection_params.effective_fee.GetFee(coin_selection_params.change_output_size); + CAmount cost_of_change = coin_selection_params.m_discard_feerate.GetFee(coin_selection_params.change_spend_size) + coin_selection_params.m_effective_feerate.GetFee(coin_selection_params.change_output_size); // Calculate the fees for things that aren't inputs - CAmount not_input_fees = coin_selection_params.effective_fee.GetFee(coin_selection_params.tx_noinputs_size); + CAmount not_input_fees = coin_selection_params.m_effective_feerate.GetFee(coin_selection_params.tx_noinputs_size); bnb_used = true; CAmount nValueRet; bool ret = SelectCoinsBnB(groups, nTargetValue, cost_of_change, setCoinsRet, nValueRet, not_input_fees); @@ -2628,7 +2622,7 @@ bool CWallet::SelectCoins(const std::vector& vAvailableCoins, const CAm coin_selection_params.use_bnb = false; coin.m_input_bytes = 0; } - coin.effective_value = coin.value - coin_selection_params.effective_fee.GetFee(coin.m_input_bytes); + coin.effective_value = coin.value - coin_selection_params.m_effective_feerate.GetFee(coin.m_input_bytes); if (coin_selection_params.use_bnb) { value_to_select[coin.asset] -= coin.effective_value; } else { @@ -3396,16 +3390,27 @@ bool CWallet::CreateTransactionInternal( coin_selection_params.change_output_size += (MAX_RANGEPROOF_SIZE + DEFAULT_SURJECTIONPROOF_SIZE + WITNESS_SCALE_FACTOR - 1)/WITNESS_SCALE_FACTOR; } - CFeeRate discard_rate = GetDiscardRate(*this); + // Set discard feerate + coin_selection_params.m_discard_feerate = GetDiscardRate(*this); // Get the fee rate to use effective values in coin selection - CFeeRate nFeeRateNeeded = GetMinimumFeeRate(*this, coin_control, &feeCalc); + coin_selection_params.m_effective_feerate = GetMinimumFeeRate(*this, coin_control, &feeCalc); // Do not, ever, assume that it's fine to change the fee rate if the user has explicitly // provided one - if (coin_control.m_feerate && nFeeRateNeeded > *coin_control.m_feerate) { - error = strprintf(_("Fee rate (%s) is lower than the minimum fee rate setting (%s)"), coin_control.m_feerate->ToString(FeeEstimateMode::SAT_VB), nFeeRateNeeded.ToString(FeeEstimateMode::SAT_VB)); + if (coin_control.m_feerate && coin_selection_params.m_effective_feerate > *coin_control.m_feerate) { + error = strprintf(_("Fee rate (%s) is lower than the minimum fee rate setting (%s)"), coin_control.m_feerate->ToString(FeeEstimateMode::SAT_VB), coin_selection_params.m_effective_feerate.ToString(FeeEstimateMode::SAT_VB)); return false; } + if (feeCalc.reason == FeeReason::FALLBACK && !m_allow_fallback_fee) { + // eventually allow a fallback fee + error = _("Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee."); + return false; + } + + // Get long term estimate + CCoinControl cc_temp; + cc_temp.m_confirm_target = chain().estimateMaxBlocks(); + coin_selection_params.m_long_term_feerate = GetMinimumFeeRate(*this, cc_temp, nullptr); // ELEMENTS: // Start with tiny non-zero fee for issuance entropy and loop until there is enough fee @@ -3523,7 +3528,6 @@ bool CWallet::CreateTransactionInternal( } else { coin_selection_params.change_spend_size = (size_t)change_spend_size; } - coin_selection_params.effective_fee = nFeeRateNeeded; if (!SelectCoins(vAvailableCoins, mapValueToSelect, setCoins, mapValueIn, coin_control, coin_selection_params, bnb_used)) { // If BnB was used, it was the first pass. No longer the first pass and continue loop with knapsack. @@ -3560,7 +3564,7 @@ bool CWallet::CreateTransactionInternal( // Never create dust outputs; if we would, just // add the dust to the fee. // The nChange when BnB is used is always going to go to fees. - if (assetChange.first == policyAsset && (IsDust(newTxOut, discard_rate) || bnb_used)) + if (assetChange.first == policyAsset && (IsDust(newTxOut, coin_selection_params.m_discard_feerate) || bnb_used)) { vChangePosInOut.erase(assetChange.first); nFeeRet += assetChange.second; @@ -3743,13 +3747,7 @@ bool CWallet::CreateTransactionInternal( txNew = blind_details->tx_unblinded_unsigned; } - nFeeNeeded = GetMinimumFee(*this, nBytes, coin_control, &feeCalc); - if (feeCalc.reason == FeeReason::FALLBACK && !m_allow_fallback_fee) { - // eventually allow a fallback fee - error = _("Fee estimation failed. Fallbackfee is disabled. Wait a few blocks or enable -fallbackfee."); - return false; - } - + nFeeNeeded = coin_selection_params.m_effective_feerate.GetFee(nBytes); if (nFeeRet >= nFeeNeeded) { // Reduce fee to only the needed amount if possible. This // prevents potential overpayment in fees if the coins @@ -3763,8 +3761,8 @@ bool CWallet::CreateTransactionInternal( // change output. Only try this once. if (nChangePosInOut == -1 && nSubtractFeeFromAmount == 0 && pick_new_inputs) { unsigned int tx_size_with_change = nBytes + coin_selection_params.change_output_size + 2; // Add 2 as a buffer in case increasing # of outputs changes compact size - CAmount fee_needed_with_change = GetMinimumFee(*this, tx_size_with_change, coin_control, nullptr); - CAmount minimum_value_for_change = GetDustThreshold(change_prototype_txout, discard_rate); + CAmount fee_needed_with_change = coin_selection_params.m_effective_feerate.GetFee(tx_size_with_change); + CAmount minimum_value_for_change = GetDustThreshold(change_prototype_txout, coin_selection_params.m_discard_feerate); if (nFeeRet >= fee_needed_with_change + minimum_value_for_change) { pick_new_inputs = false; nFeeRet = fee_needed_with_change; diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index 3350a2401c..dbe52f1771 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -674,17 +674,22 @@ struct CoinSelectionParams bool use_bnb = true; size_t change_output_size = 0; size_t change_spend_size = 0; - CFeeRate effective_fee = CFeeRate(0); + CFeeRate m_effective_feerate; + CFeeRate m_long_term_feerate; + CFeeRate m_discard_feerate; size_t tx_noinputs_size = 0; //! Indicate that we are subtracting the fee from outputs bool m_subtract_fee_outputs = false; bool m_avoid_partial_spends = false; - CoinSelectionParams(bool use_bnb, size_t change_output_size, size_t change_spend_size, CFeeRate effective_fee, size_t tx_noinputs_size, bool avoid_partial) : + CoinSelectionParams(bool use_bnb, size_t change_output_size, size_t change_spend_size, CFeeRate effective_feerate, + CFeeRate long_term_feerate, CFeeRate discard_feerate, size_t tx_noinputs_size, bool avoid_partial) : use_bnb(use_bnb), change_output_size(change_output_size), change_spend_size(change_spend_size), - effective_fee(effective_fee), + m_effective_feerate(effective_feerate), + m_long_term_feerate(long_term_feerate), + m_discard_feerate(discard_feerate), tx_noinputs_size(tx_noinputs_size), m_avoid_partial_spends(avoid_partial) {}