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// Copyright (c) 2022 The Bitcoin Core developers
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://www.opensource.org/licenses/mit-license.php.
#include <bench/bench.h>
#include <chainparams.h>
#include <wallet/coincontrol.h>
#include <consensus/merkle.h>
#include <kernel/chain.h>
#include <node/context.h>
#include <test/util/setup_common.h>
#include <validation.h>
#include <wallet/spend.h>
#include <wallet/test/util.h>
#include <wallet/wallet.h>
using wallet::CWallet;
using wallet::CreateMockableWalletDatabase;
using wallet::DBErrors;
using wallet::WALLET_FLAG_DESCRIPTORS;
struct TipBlock
{
uint256 prev_block_hash;
int64_t prev_block_time;
int tip_height;
};
TipBlock getTip(const CChainParams& params, const node::NodeContext& context)
{
auto tip = WITH_LOCK(::cs_main, return context.chainman->ActiveTip());
return (tip) ? TipBlock{tip->GetBlockHash(), tip->GetBlockTime(), tip->nHeight} :
TipBlock{params.GenesisBlock().GetHash(), params.GenesisBlock().GetBlockTime(), 0};
}
void generateFakeBlock(const CChainParams& params,
const node::NodeContext& context,
CWallet& wallet,
const CScript& coinbase_out_script)
{
TipBlock tip{getTip(params, context)};
// Create block
CBlock block;
CMutableTransaction coinbase_tx;
coinbase_tx.vin.resize(1);
coinbase_tx.vin[0].prevout.SetNull();
coinbase_tx.vout.resize(2);
coinbase_tx.vout[0].scriptPubKey = coinbase_out_script;
coinbase_tx.vout[0].nValue = 49 * COIN;
coinbase_tx.vin[0].scriptSig = CScript() << ++tip.tip_height << OP_0;
coinbase_tx.vout[1].scriptPubKey = coinbase_out_script; // extra output
coinbase_tx.vout[1].nValue = 1 * COIN;
block.vtx = {MakeTransactionRef(std::move(coinbase_tx))};
block.nVersion = VERSIONBITS_LAST_OLD_BLOCK_VERSION;
block.hashPrevBlock = tip.prev_block_hash;
block.hashMerkleRoot = BlockMerkleRoot(block);
block.nTime = ++tip.prev_block_time;
block.nBits = params.GenesisBlock().nBits;
block.nNonce = 0;
{
LOCK(::cs_main);
// Add it to the index
CBlockIndex* pindex{context.chainman->m_blockman.AddToBlockIndex(block, context.chainman->m_best_header)};
// add it to the chain
context.chainman->ActiveChain().SetTip(*pindex);
}
// notify wallet
const auto& pindex = WITH_LOCK(::cs_main, return context.chainman->ActiveChain().Tip());
wallet.blockConnected(kernel::MakeBlockInfo(pindex, &block));
}
struct PreSelectInputs {
// How many coins from the wallet the process should select
int num_of_internal_inputs;
// future: this could have external inputs as well.
};
static void WalletCreateTx(benchmark::Bench& bench, const OutputType output_type, bool allow_other_inputs, std::optional<PreSelectInputs> preset_inputs)
{
const auto test_setup = MakeNoLogFileContext<const TestingSetup>();
CWallet wallet{test_setup->m_node.chain.get(), "", CreateMockableWalletDatabase()};
{
LOCK(wallet.cs_wallet);
wallet.SetWalletFlag(WALLET_FLAG_DESCRIPTORS);
wallet.SetupDescriptorScriptPubKeyMans();
if (wallet.LoadWallet() != DBErrors::LOAD_OK) assert(false);
}
// Generate destinations
CScript dest = GetScriptForDestination(getNewDestination(wallet, output_type));
// Generate chain; each coinbase will have two outputs to fill-up the wallet
const auto& params = Params();
unsigned int chain_size = 5000; // 5k blocks means 10k UTXO for the wallet (minus 200 due COINBASE_MATURITY)
for (unsigned int i = 0; i < chain_size; ++i) {
generateFakeBlock(params, test_setup->m_node, wallet, dest);
}
// Check available balance
auto bal = WITH_LOCK(wallet.cs_wallet, return wallet::AvailableCoins(wallet).GetTotalAmount()); // Cache
assert(bal == 50 * COIN * (chain_size - COINBASE_MATURITY));
wallet::CCoinControl coin_control;
coin_control.m_allow_other_inputs = allow_other_inputs;
CAmount target = 0;
if (preset_inputs) {
// Select inputs, each has 49 BTC
wallet::CoinFilterParams filter_coins;
filter_coins.max_count = preset_inputs->num_of_internal_inputs;
const auto& res = WITH_LOCK(wallet.cs_wallet,
return wallet::AvailableCoins(wallet, /*coinControl=*/nullptr, /*feerate=*/std::nullopt, filter_coins));
for (int i=0; i < preset_inputs->num_of_internal_inputs; i++) {
const auto& coin{res.coins.at(output_type)[i]};
target += coin.txout.nValue;
coin_control.Select(coin.outpoint);
}
}
// If automatic coin selection is enabled, add the value of another UTXO to the target
if (coin_control.m_allow_other_inputs) target += 50 * COIN;
std::vector<wallet::CRecipient> recipients = {{dest, target, true}};
bench.epochIterations(5).run([&] {
LOCK(wallet.cs_wallet);
const auto& tx_res = CreateTransaction(wallet, recipients, -1, coin_control);
assert(tx_res);
});
}
static void AvailableCoins(benchmark::Bench& bench, const std::vector<OutputType>& output_type)
{
const auto test_setup = MakeNoLogFileContext<const TestingSetup>();
CWallet wallet{test_setup->m_node.chain.get(), "", CreateMockableWalletDatabase()};
{
LOCK(wallet.cs_wallet);
wallet.SetWalletFlag(WALLET_FLAG_DESCRIPTORS);
wallet.SetupDescriptorScriptPubKeyMans();
if (wallet.LoadWallet() != DBErrors::LOAD_OK) assert(false);
}
// Generate destinations
std::vector<CScript> dest_wallet;
dest_wallet.reserve(output_type.size());
for (auto type : output_type) {
dest_wallet.emplace_back(GetScriptForDestination(getNewDestination(wallet, type)));
}
// Generate chain; each coinbase will have two outputs to fill-up the wallet
const auto& params = Params();
unsigned int chain_size = 1000;
for (unsigned int i = 0; i < chain_size / dest_wallet.size(); ++i) {
for (const auto& dest : dest_wallet) {
generateFakeBlock(params, test_setup->m_node, wallet, dest);
}
}
// Check available balance
auto bal = WITH_LOCK(wallet.cs_wallet, return wallet::AvailableCoins(wallet).GetTotalAmount()); // Cache
assert(bal == 50 * COIN * (chain_size - COINBASE_MATURITY));
bench.epochIterations(2).run([&] {
LOCK(wallet.cs_wallet);
const auto& res = wallet::AvailableCoins(wallet);
assert(res.All().size() == (chain_size - COINBASE_MATURITY) * 2);
});
}
static void WalletCreateTxUseOnlyPresetInputs(benchmark::Bench& bench) { WalletCreateTx(bench, OutputType::BECH32, /*allow_other_inputs=*/false,
{{/*num_of_internal_inputs=*/4}}); }
static void WalletCreateTxUsePresetInputsAndCoinSelection(benchmark::Bench& bench) { WalletCreateTx(bench, OutputType::BECH32, /*allow_other_inputs=*/true,
{{/*num_of_internal_inputs=*/4}}); }
static void WalletAvailableCoins(benchmark::Bench& bench) { AvailableCoins(bench, {OutputType::BECH32M}); }
BENCHMARK(WalletCreateTxUseOnlyPresetInputs, benchmark::PriorityLevel::LOW)
BENCHMARK(WalletCreateTxUsePresetInputsAndCoinSelection, benchmark::PriorityLevel::LOW)
BENCHMARK(WalletAvailableCoins, benchmark::PriorityLevel::LOW);
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