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wallet2: request transactions in slices when scanning for known rings

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This avoid massive memory consumption for huge wallets
This commit is contained in:
moneromooo-monero 2018-04-04 11:40:31 +01:00
parent 2897c269de
commit 58f6607382
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GPG key ID: 686F07454D6CEFC3
1 changed files with 32 additions and 22 deletions
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54
src/wallet/wallet2.cpp
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@ -5615,40 +5615,49 @@ bool wallet2::find_and_save_rings(bool force)
MDEBUG("Finding and saving rings...");
// get payments we made
std::vector<crypto::hash> txs_hashes;
std::list<std::pair<crypto::hash,wallet2::confirmed_transfer_details>> payments;
get_payments_out(payments, 0, std::numeric_limits<uint64_t>::max(), boost::none, std::set<uint32_t>());
for (const std::pair<crypto::hash,wallet2::confirmed_transfer_details> &entry: payments)
{
const crypto::hash &txid = entry.first;
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txid));
txs_hashes.push_back(txid);
}
MDEBUG("Found " << std::to_string(req.txs_hashes.size()) << " transactions");
// get those transactions from the daemon
req.decode_as_json = false;
req.prune = true;
bool r;
{
const boost::lock_guard<boost::mutex> lock{m_daemon_rpc_mutex};
r = epee::net_utils::invoke_http_json("/gettransactions", req, res, m_http_client, rpc_timeout);
}
THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "gettransactions");
THROW_WALLET_EXCEPTION_IF(res.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "gettransactions");
THROW_WALLET_EXCEPTION_IF(res.status != CORE_RPC_STATUS_OK, error::wallet_internal_error, "gettransactions");
THROW_WALLET_EXCEPTION_IF(res.txs.size() != req.txs_hashes.size(), error::wallet_internal_error,
"daemon returned wrong response for gettransactions, wrong txs count = " +
std::to_string(res.txs.size()) + ", expected " + std::to_string(req.txs_hashes.size()));
MDEBUG("Scanning " << res.txs.size() << " transactions");
MDEBUG("Found " << std::to_string(txs_hashes.size()) << " transactions");
crypto::chacha_key key;
generate_chacha_key_from_secret_keys(key);
auto it = req.txs_hashes.begin();
for (size_t i = 0; i < res.txs.size(); ++i, ++it)
// get those transactions from the daemon
static const size_t SLICE_SIZE = 200;
for (size_t slice = 0; slice < txs_hashes.size(); slice += SLICE_SIZE)
{
req.decode_as_json = false;
req.prune = true;
req.txs_hashes.clear();
size_t ntxes = slice + SLICE_SIZE > txs_hashes.size() ? txs_hashes.size() - slice : SLICE_SIZE;
for (size_t s = slice; s < slice + ntxes; ++s)
req.txs_hashes.push_back(epee::string_tools::pod_to_hex(txs_hashes[s]));
bool r;
{
const boost::lock_guard<boost::mutex> lock{m_daemon_rpc_mutex};
r = epee::net_utils::invoke_http_json("/gettransactions", req, res, m_http_client, rpc_timeout);
}
THROW_WALLET_EXCEPTION_IF(!r, error::no_connection_to_daemon, "gettransactions");
THROW_WALLET_EXCEPTION_IF(res.status == CORE_RPC_STATUS_BUSY, error::daemon_busy, "gettransactions");
THROW_WALLET_EXCEPTION_IF(res.status != CORE_RPC_STATUS_OK, error::wallet_internal_error, "gettransactions");
THROW_WALLET_EXCEPTION_IF(res.txs.size() != req.txs_hashes.size(), error::wallet_internal_error,
"daemon returned wrong response for gettransactions, wrong txs count = " +
std::to_string(res.txs.size()) + ", expected " + std::to_string(req.txs_hashes.size()));
MDEBUG("Scanning " << res.txs.size() << " transactions");
THROW_WALLET_EXCEPTION_IF(slice + res.txs.size() > txs_hashes.size(), error::wallet_internal_error, "Unexpected tx array size");
auto it = req.txs_hashes.begin();
for (size_t i = 0; i < res.txs.size(); ++i, ++it)
{
const auto &tx_info = res.txs[i];
THROW_WALLET_EXCEPTION_IF(tx_info.tx_hash != epee::string_tools::pod_to_hex(txs_hashes[slice + i]), error::wallet_internal_error, "Wrong txid received");
THROW_WALLET_EXCEPTION_IF(tx_info.tx_hash != *it, error::wallet_internal_error, "Wrong txid received");
cryptonote::blobdata bd;
THROW_WALLET_EXCEPTION_IF(!epee::string_tools::parse_hexstr_to_binbuff(tx_info.as_hex, bd), error::wallet_internal_error, "failed to parse tx from hexstr");
@ -5657,9 +5666,10 @@ bool wallet2::find_and_save_rings(bool force)
THROW_WALLET_EXCEPTION_IF(!cryptonote::parse_and_validate_tx_from_blob(bd, tx, tx_hash, tx_prefix_hash), error::wallet_internal_error, "failed to parse tx from blob");
THROW_WALLET_EXCEPTION_IF(epee::string_tools::pod_to_hex(tx_hash) != tx_info.tx_hash, error::wallet_internal_error, "txid mismatch");
THROW_WALLET_EXCEPTION_IF(!add_rings(key, tx), error::wallet_internal_error, "Failed to save ring");
}
}
MINFO("Found and saved rings for " << res.txs.size() << " transactions");
MINFO("Found and saved rings for " << txs_hashes.size() << " transactions");
m_ring_history_saved = true;
return true;
}