diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/cryptonote_config.h | 4 | ||||
| -rw-r--r-- | src/cryptonote_core/blockchain.cpp | 82 | ||||
| -rw-r--r-- | src/cryptonote_core/blockchain.h | 41 | ||||
| -rw-r--r-- | src/cryptonote_core/tx_pool.cpp | 6 | ||||
| -rw-r--r-- | src/rpc/core_rpc_server.cpp | 7 | ||||
| -rw-r--r-- | src/rpc/core_rpc_server.h | 2 | ||||
| -rw-r--r-- | src/rpc/core_rpc_server_commands_defs.h | 23 | ||||
| -rw-r--r-- | src/wallet/wallet2.cpp | 44 | ||||
| -rw-r--r-- | src/wallet/wallet2.h | 2 |
9 files changed, 202 insertions, 9 deletions
diff --git a/src/cryptonote_config.h b/src/cryptonote_config.h index 66084da3c..175a5d26e 100644 --- a/src/cryptonote_config.h +++ b/src/cryptonote_config.h @@ -64,6 +64,8 @@ #define FEE_PER_KB_OLD ((uint64_t)10000000000) // pow(10, 10) #define FEE_PER_KB ((uint64_t)2000000000) // 2 * pow(10, 9) +#define DYNAMIC_FEE_PER_KB_BASE_FEE ((uint64_t)2000000000) // 2 * pow(10,9) +#define DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD ((uint64_t)10000000000000) // 10 * pow(10,12) #define ORPHANED_BLOCKS_MAX_COUNT 100 @@ -122,6 +124,8 @@ #define THREAD_STACK_SIZE 5 * 1024 * 1024 +#define HF_VERSION_DYNAMIC_FEE 4 + // New constants are intended to go here namespace config { diff --git a/src/cryptonote_core/blockchain.cpp b/src/cryptonote_core/blockchain.cpp index 9ea023a4c..ffebcd592 100644 --- a/src/cryptonote_core/blockchain.cpp +++ b/src/cryptonote_core/blockchain.cpp @@ -46,6 +46,7 @@ #include "misc_language.h" #include "profile_tools.h" #include "file_io_utils.h" +#include "common/int-util.h" #include "common/boost_serialization_helper.h" #include "warnings.h" #include "crypto/hash.h" @@ -2709,6 +2710,87 @@ void Blockchain::check_ring_signature(const crypto::hash &tx_prefix_hash, const } //------------------------------------------------------------------ +uint64_t Blockchain::get_dynamic_per_kb_fee(uint64_t block_reward, size_t median_block_size) +{ + if (median_block_size < CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2) + median_block_size = CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2; + + uint64_t unscaled_fee_per_kb = (DYNAMIC_FEE_PER_KB_BASE_FEE * CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / median_block_size); + uint64_t hi, lo = mul128(unscaled_fee_per_kb, block_reward, &hi); + static_assert(DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD % 1000000 == 0, "DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD must be divisible by 1000000"); + static_assert(DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD / 1000000 <= std::numeric_limits<uint32_t>::max(), "DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD is too large"); + // divide in two steps, since the divisor must be 32 bits, but DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD isn't + div128_32(hi, lo, DYNAMIC_FEE_PER_KB_BASE_BLOCK_REWARD / 1000000, &hi, &lo); + div128_32(hi, lo, 1000000, &hi, &lo); + assert(hi == 0); + + return lo; +} + +//------------------------------------------------------------------ +bool Blockchain::check_fee(size_t blob_size, uint64_t fee) const +{ + const uint8_t version = get_current_hard_fork_version(); + + uint64_t fee_per_kb; + if (version < HF_VERSION_DYNAMIC_FEE) + { + fee_per_kb = FEE_PER_KB; + } + else + { + uint64_t median = m_current_block_cumul_sz_limit / 2; + uint64_t already_generated_coins = m_db->height() ? m_db->get_block_already_generated_coins(m_db->height() - 1) : 0; + uint64_t base_reward; + if (!get_block_reward(median, 1, already_generated_coins, base_reward, version)) + return false; + fee_per_kb = get_dynamic_per_kb_fee(base_reward, median); + } + LOG_PRINT_L2("Using " << print_money(fee) << "/kB fee"); + + uint64_t needed_fee = blob_size / 1024; + needed_fee += (blob_size % 1024) ? 1 : 0; + needed_fee *= fee_per_kb; + + if (fee < needed_fee) + { + LOG_PRINT_L1("transaction fee is not enough: " << print_money(fee) << ", minimum fee: " << print_money(needed_fee)); + return false; + } + return true; +} + +//------------------------------------------------------------------ +uint64_t Blockchain::get_dynamic_per_kb_fee_estimate(uint64_t grace_blocks) const +{ + const uint8_t version = get_current_hard_fork_version(); + + if (version < HF_VERSION_DYNAMIC_FEE) + return FEE_PER_KB; + + if (grace_blocks >= CRYPTONOTE_REWARD_BLOCKS_WINDOW) + grace_blocks = CRYPTONOTE_REWARD_BLOCKS_WINDOW - 1; + + std::vector<size_t> sz; + get_last_n_blocks_sizes(sz, CRYPTONOTE_REWARD_BLOCKS_WINDOW - grace_blocks); + for (size_t i = 0; i < grace_blocks; ++i) + sz.push_back(CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2); + + uint64_t median = epee::misc_utils::median(sz); + if(median <= CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2) + median = CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2; + + uint64_t already_generated_coins = m_db->height() ? m_db->get_block_already_generated_coins(m_db->height() - 1) : 0; + uint64_t base_reward; + if (!get_block_reward(median, 1, already_generated_coins, base_reward, version)) + return false; + + uint64_t fee = get_dynamic_per_kb_fee(base_reward, median); + LOG_PRINT_L2("Estimating " << grace_blocks << "-block fee at " << print_money(fee) << "/kB"); + return fee; +} + +//------------------------------------------------------------------ // This function checks to see if a tx is unlocked. unlock_time is either // a block index or a unix time. bool Blockchain::is_tx_spendtime_unlocked(uint64_t unlock_time) const diff --git a/src/cryptonote_core/blockchain.h b/src/cryptonote_core/blockchain.h index 262c2952b..eb7a050b2 100644 --- a/src/cryptonote_core/blockchain.h +++ b/src/cryptonote_core/blockchain.h @@ -513,6 +513,47 @@ namespace cryptonote bool check_tx_inputs(transaction& tx, uint64_t& pmax_used_block_height, crypto::hash& max_used_block_id, tx_verification_context &tvc, bool kept_by_block = false); /** + * @brief get dynamic per kB fee for a given block size + * + * The dynamic fee is based on the block size in a past window, and + * the current block reward. It is expressed by kB. + * + * @param block_reward the current block reward + * @param median_block_size the median blob's size in the past window + * + * @return the per kB fee + */ + static uint64_t get_dynamic_per_kb_fee(uint64_t block_reward, size_t median_block_size); + + /** + * @brief get dynamic per kB fee estimate for the next few blocks + * + * The dynamic fee is based on the block size in a past window, and + * the current block reward. It is expressed by kB. This function + * calculates an estimate for a dynamic fee which will be valid for + * the next grace_blocks + * + * @param grace_blocks number of blocks we want the fee to be valid for + * + * @return the per kB fee estimate + */ + uint64_t get_dynamic_per_kb_fee_estimate(uint64_t grace_blocks) const; + + /** + * @brief validate a transaction's fee + * + * This function validates the fee is enough for the transaction. + * This is based on the size of the transaction blob, and, after a + * height threshold, on the average size of transaction in a past window + * + * @param blob_size the transaction blob's size + * @param fee the fee + * + * @return true if the fee is enough, false otherwise + */ + bool check_fee(size_t blob_size, uint64_t fee) const; + + /** * @brief check that a transaction's outputs conform to current standards * * This function checks, for example at the time of this writing, that diff --git a/src/cryptonote_core/tx_pool.cpp b/src/cryptonote_core/tx_pool.cpp index dba05a539..e72a592ca 100644 --- a/src/cryptonote_core/tx_pool.cpp +++ b/src/cryptonote_core/tx_pool.cpp @@ -133,12 +133,8 @@ namespace cryptonote fee = tx.rct_signatures.txnFee; } - uint64_t needed_fee = blob_size / 1024; - needed_fee += (blob_size % 1024) ? 1 : 0; - needed_fee *= FEE_PER_KB; - if (!kept_by_block && fee < needed_fee) + if (!kept_by_block && !m_blockchain.check_fee(blob_size, fee)) { - LOG_PRINT_L1("transaction fee is not enough: " << print_money(fee) << ", minimum fee: " << print_money(needed_fee)); tvc.m_verifivation_failed = true; tvc.m_fee_too_low = true; return false; diff --git a/src/rpc/core_rpc_server.cpp b/src/rpc/core_rpc_server.cpp index 0fca2eb57..a02a2375b 100644 --- a/src/rpc/core_rpc_server.cpp +++ b/src/rpc/core_rpc_server.cpp @@ -1283,6 +1283,13 @@ namespace cryptonote return true; } //------------------------------------------------------------------------------------------------------------------------------ + bool core_rpc_server::on_get_per_kb_fee_estimate(const COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE::request& req, COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE::response& res, epee::json_rpc::error& error_resp) + { + res.fee = m_core.get_blockchain_storage().get_dynamic_per_kb_fee_estimate(req.grace_blocks); + res.status = CORE_RPC_STATUS_OK; + return true; + } + //------------------------------------------------------------------------------------------------------------------------------ bool core_rpc_server::on_out_peers(const COMMAND_RPC_OUT_PEERS::request& req, COMMAND_RPC_OUT_PEERS::response& res) { // TODO diff --git a/src/rpc/core_rpc_server.h b/src/rpc/core_rpc_server.h index 147f019d6..2fdb790ab 100644 --- a/src/rpc/core_rpc_server.h +++ b/src/rpc/core_rpc_server.h @@ -116,6 +116,7 @@ namespace cryptonote MAP_JON_RPC_WE("get_output_histogram", on_get_output_histogram, COMMAND_RPC_GET_OUTPUT_HISTOGRAM) MAP_JON_RPC_WE("get_version", on_get_version, COMMAND_RPC_GET_VERSION) MAP_JON_RPC_WE("get_coinbase_tx_sum", on_get_coinbase_tx_sum, COMMAND_RPC_GET_COINBASE_TX_SUM) + MAP_JON_RPC_WE("get_fee_estimate", on_get_per_kb_fee_estimate, COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE) END_JSON_RPC_MAP() END_URI_MAP2() @@ -162,6 +163,7 @@ namespace cryptonote bool on_get_output_histogram(const COMMAND_RPC_GET_OUTPUT_HISTOGRAM::request& req, COMMAND_RPC_GET_OUTPUT_HISTOGRAM::response& res, epee::json_rpc::error& error_resp); bool on_get_version(const COMMAND_RPC_GET_VERSION::request& req, COMMAND_RPC_GET_VERSION::response& res, epee::json_rpc::error& error_resp); bool on_get_coinbase_tx_sum(const COMMAND_RPC_GET_COINBASE_TX_SUM::request& req, COMMAND_RPC_GET_COINBASE_TX_SUM::response& res, epee::json_rpc::error& error_resp); + bool on_get_per_kb_fee_estimate(const COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE::request& req, COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE::response& res, epee::json_rpc::error& error_resp); //----------------------- private: diff --git a/src/rpc/core_rpc_server_commands_defs.h b/src/rpc/core_rpc_server_commands_defs.h index 85895a71a..718c98b6a 100644 --- a/src/rpc/core_rpc_server_commands_defs.h +++ b/src/rpc/core_rpc_server_commands_defs.h @@ -1266,4 +1266,27 @@ namespace cryptonote END_KV_SERIALIZE_MAP() }; }; + + struct COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE + { + struct request + { + uint64_t grace_blocks; + + BEGIN_KV_SERIALIZE_MAP() + KV_SERIALIZE(grace_blocks) + END_KV_SERIALIZE_MAP() + }; + + struct response + { + std::string status; + uint64_t fee; + + BEGIN_KV_SERIALIZE_MAP() + KV_SERIALIZE(status) + KV_SERIALIZE(fee) + END_KV_SERIALIZE_MAP() + }; + }; } diff --git a/src/wallet/wallet2.cpp b/src/wallet/wallet2.cpp index f57a8d2ca..6d51e355f 100644 --- a/src/wallet/wallet2.cpp +++ b/src/wallet/wallet2.cpp @@ -80,6 +80,8 @@ using namespace cryptonote; #define RECENT_OUTPUT_RATIO (0.25) // 25% of outputs are from the recent zone #define RECENT_OUTPUT_ZONE (5 * 86400) // last 5 days are the recent zone +#define FEE_ESTIMATE_GRACE_BLOCKS 10 // estimate fee valid for that many blocks + #define KILL_IOSERVICE() \ do { \ work.reset(); \ @@ -2765,6 +2767,40 @@ uint64_t wallet2::get_fee_multiplier(uint32_t priority, bool use_new_fee) const return 1; } //---------------------------------------------------------------------------------------------------- +uint64_t wallet2::get_dynamic_per_kb_fee_estimate() +{ + epee::json_rpc::request<cryptonote::COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE::request> req_t = AUTO_VAL_INIT(req_t); + epee::json_rpc::response<cryptonote::COMMAND_RPC_GET_PER_KB_FEE_ESTIMATE::response, std::string> resp_t = AUTO_VAL_INIT(resp_t); + + m_daemon_rpc_mutex.lock(); + req_t.jsonrpc = "2.0"; + req_t.id = epee::serialization::storage_entry(0); + req_t.method = "get_fee_estimate"; + req_t.params.grace_blocks = FEE_ESTIMATE_GRACE_BLOCKS; + bool r = net_utils::invoke_http_json_remote_command2(m_daemon_address + "/json_rpc", req_t, resp_t, m_http_client); + m_daemon_rpc_mutex.unlock(); + CHECK_AND_ASSERT_THROW_MES(r, "Failed to connect to daemon"); + CHECK_AND_ASSERT_THROW_MES(resp_t.result.status != CORE_RPC_STATUS_BUSY, "Failed to connect to daemon"); + CHECK_AND_ASSERT_THROW_MES(resp_t.result.status == CORE_RPC_STATUS_OK, "Failed to get fee estimate"); + return resp_t.result.fee; +} +//---------------------------------------------------------------------------------------------------- +uint64_t wallet2::get_per_kb_fee() +{ + bool use_dyn_fee = use_fork_rules(HF_VERSION_DYNAMIC_FEE, -720 * 14); + if (!use_dyn_fee) + return FEE_PER_KB; + try + { + return get_dynamic_per_kb_fee_estimate(); + } + catch (...) + { + LOG_PRINT_L1("Failed to query per kB fee, using " << print_money(FEE_PER_KB)); + return FEE_PER_KB; + } +} +//---------------------------------------------------------------------------------------------------- // separated the call(s) to wallet2::transfer into their own function // // this function will make multiple calls to wallet2::transfer if multiple @@ -2774,7 +2810,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions(std::vector<crypto const std::vector<size_t> unused_transfers_indices = select_available_outputs_from_histogram(fake_outs_count + 1, true, true, trusted_daemon); const bool use_new_fee = use_fork_rules(3, -720 * 14); - const uint64_t fee_per_kb = use_new_fee ? FEE_PER_KB : FEE_PER_KB_OLD; + const uint64_t fee_per_kb = get_per_kb_fee(); const uint64_t fee_multiplier = get_fee_multiplier(priority, use_new_fee); // failsafe split attempt counter @@ -3495,7 +3531,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_2(std::vector<cryp const bool use_rct = use_fork_rules(4, 0); const bool use_new_fee = use_fork_rules(3, -720 * 14); - const uint64_t fee_per_kb = use_new_fee ? FEE_PER_KB : FEE_PER_KB_OLD; + const uint64_t fee_per_kb = get_per_kb_fee(); const uint64_t fee_multiplier = get_fee_multiplier(priority, use_new_fee); // throw if attempting a transaction with no destinations @@ -3777,7 +3813,7 @@ std::vector<wallet2::pending_tx> wallet2::create_transactions_from(const crypton const bool use_rct = fake_outs_count > 0 && use_fork_rules(4, 0); const bool use_new_fee = use_fork_rules(3, -720 * 14); - const uint64_t fee_per_kb = use_new_fee ? FEE_PER_KB : FEE_PER_KB_OLD; + const uint64_t fee_per_kb = get_per_kb_fee(); const uint64_t fee_multiplier = get_fee_multiplier(priority, use_new_fee); LOG_PRINT_L2("Starting with " << unused_transfers_indices.size() << " non-dust outputs and " << unused_dust_indices.size() << " dust outputs"); @@ -4083,7 +4119,7 @@ std::vector<wallet2::pending_tx> wallet2::create_unmixable_sweep_transactions(bo tx_dust_policy dust_policy(hf1_rules ? 0 : ::config::DEFAULT_DUST_THRESHOLD); const bool use_new_fee = use_fork_rules(3, -720 * 14); - const uint64_t fee_per_kb = use_new_fee ? FEE_PER_KB : FEE_PER_KB_OLD; + const uint64_t fee_per_kb = get_per_kb_fee(); // may throw std::vector<size_t> unmixable_outputs = select_available_unmixable_outputs(trusted_daemon); diff --git a/src/wallet/wallet2.h b/src/wallet/wallet2.h index b34db0b6c..fb7de44ad 100644 --- a/src/wallet/wallet2.h +++ b/src/wallet/wallet2.h @@ -520,6 +520,8 @@ namespace tools uint64_t get_upper_tranaction_size_limit(); std::vector<uint64_t> get_unspent_amounts_vector(); uint64_t get_fee_multiplier(uint32_t priority, bool use_new_fee) const; + uint64_t get_dynamic_per_kb_fee_estimate(); + uint64_t get_per_kb_fee(); float get_output_relatedness(const transfer_details &td0, const transfer_details &td1) const; std::vector<size_t> pick_prefered_rct_inputs(uint64_t needed_money) const; void set_spent(size_t idx, uint64_t height); |