Merge pull request #1276

18f66f4 wallet: use the dynamic per kB fee (moneromooo-monero)
e6deb8a rpc: add a dynamic fee estimation RPC call (moneromooo-monero)
82dbba1 core: dynamic fee algorithm from ArticMine (moneromooo-monero)
This commit is contained in:
Riccardo Spagni 2016-11-08 22:33:13 +02:00
commit 0fa6cbef3f
No known key found for this signature in database
GPG key ID: 55432DF31CCD4FCD
11 changed files with 324 additions and 9 deletions

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@ -64,6 +64,8 @@
#define FEE_PER_KB_OLD ((uint64_t)10000000000) // pow(10, 10) #define FEE_PER_KB_OLD ((uint64_t)10000000000) // pow(10, 10)
#define FEE_PER_KB ((uint64_t)2000000000) // 2 * pow(10, 9) #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 #define ORPHANED_BLOCKS_MAX_COUNT 100
@ -122,6 +124,8 @@
#define THREAD_STACK_SIZE 5 * 1024 * 1024 #define THREAD_STACK_SIZE 5 * 1024 * 1024
#define HF_VERSION_DYNAMIC_FEE 4
// New constants are intended to go here // New constants are intended to go here
namespace config namespace config
{ {

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@ -46,6 +46,7 @@
#include "misc_language.h" #include "misc_language.h"
#include "profile_tools.h" #include "profile_tools.h"
#include "file_io_utils.h" #include "file_io_utils.h"
#include "common/int-util.h"
#include "common/boost_serialization_helper.h" #include "common/boost_serialization_helper.h"
#include "warnings.h" #include "warnings.h"
#include "crypto/hash.h" #include "crypto/hash.h"
@ -2708,6 +2709,87 @@ void Blockchain::check_ring_signature(const crypto::hash &tx_prefix_hash, const
result = crypto::check_ring_signature(tx_prefix_hash, key_image, p_output_keys, sig.data()) ? 1 : 0; result = crypto::check_ring_signature(tx_prefix_hash, key_image, p_output_keys, sig.data()) ? 1 : 0;
} }
//------------------------------------------------------------------
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 // This function checks to see if a tx is unlocked. unlock_time is either
// a block index or a unix time. // a block index or a unix time.

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@ -512,6 +512,47 @@ 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); 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 * @brief check that a transaction's outputs conform to current standards
* *

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@ -133,12 +133,8 @@ namespace cryptonote
fee = tx.rct_signatures.txnFee; fee = tx.rct_signatures.txnFee;
} }
uint64_t needed_fee = blob_size / 1024; if (!kept_by_block && !m_blockchain.check_fee(blob_size, fee))
needed_fee += (blob_size % 1024) ? 1 : 0;
needed_fee *= FEE_PER_KB;
if (!kept_by_block && fee < needed_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_verifivation_failed = true;
tvc.m_fee_too_low = true; tvc.m_fee_too_low = true;
return false; return false;

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@ -1283,6 +1283,13 @@ namespace cryptonote
return true; 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) bool core_rpc_server::on_out_peers(const COMMAND_RPC_OUT_PEERS::request& req, COMMAND_RPC_OUT_PEERS::response& res)
{ {
// TODO // TODO

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@ -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_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_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_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_JSON_RPC_MAP()
END_URI_MAP2() 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_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_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_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: private:

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@ -1266,4 +1266,27 @@ namespace cryptonote
END_KV_SERIALIZE_MAP() 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()
};
};
} }

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@ -80,6 +80,8 @@ using namespace cryptonote;
#define RECENT_OUTPUT_RATIO (0.25) // 25% of outputs are from the recent zone #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 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() \ #define KILL_IOSERVICE() \
do { \ do { \
work.reset(); \ work.reset(); \
@ -2765,6 +2767,40 @@ uint64_t wallet2::get_fee_multiplier(uint32_t priority, bool use_new_fee) const
return 1; 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 // separated the call(s) to wallet2::transfer into their own function
// //
// this function will make multiple calls to wallet2::transfer if multiple // 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 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 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); const uint64_t fee_multiplier = get_fee_multiplier(priority, use_new_fee);
// failsafe split attempt counter // 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_rct = use_fork_rules(4, 0);
const bool use_new_fee = use_fork_rules(3, -720 * 14); 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); const uint64_t fee_multiplier = get_fee_multiplier(priority, use_new_fee);
// throw if attempting a transaction with no destinations // 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_rct = fake_outs_count > 0 && use_fork_rules(4, 0);
const bool use_new_fee = use_fork_rules(3, -720 * 14); 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); 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"); 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); tx_dust_policy dust_policy(hf1_rules ? 0 : ::config::DEFAULT_DUST_THRESHOLD);
const bool use_new_fee = use_fork_rules(3, -720 * 14); 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 // may throw
std::vector<size_t> unmixable_outputs = select_available_unmixable_outputs(trusted_daemon); std::vector<size_t> unmixable_outputs = select_available_unmixable_outputs(trusted_daemon);

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@ -520,6 +520,8 @@ namespace tools
uint64_t get_upper_tranaction_size_limit(); uint64_t get_upper_tranaction_size_limit();
std::vector<uint64_t> get_unspent_amounts_vector(); std::vector<uint64_t> get_unspent_amounts_vector();
uint64_t get_fee_multiplier(uint32_t priority, bool use_new_fee) const; 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; 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; std::vector<size_t> pick_prefered_rct_inputs(uint64_t needed_money) const;
void set_spent(size_t idx, uint64_t height); void set_spent(size_t idx, uint64_t height);

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@ -39,6 +39,7 @@ set(unit_tests_sources
dns_resolver.cpp dns_resolver.cpp
epee_boosted_tcp_server.cpp epee_boosted_tcp_server.cpp
epee_levin_protocol_handler_async.cpp epee_levin_protocol_handler_async.cpp
fee.cpp
get_xtype_from_string.cpp get_xtype_from_string.cpp
main.cpp main.cpp
mnemonics.cpp mnemonics.cpp

121
tests/unit_tests/fee.cpp Normal file
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@ -0,0 +1,121 @@
// Copyright (c) 2014-2016, The Monero Project
//
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// Parts of this file are originally copyright (c) 2012-2013 The Cryptonote developers
#include "gtest/gtest.h"
#include "cryptonote_core/blockchain.h"
using namespace cryptonote;
namespace
{
//--------------------------------------------------------------------------------------------------------------------
class fee : public ::testing::Test
{
};
TEST_F(fee, 10xmr)
{
// CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 and lower are clamped
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2), 2000000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / 2), 2000000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / 100), 2000000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, 1), 2000000000);
// higher is inverse proportional
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 2), 2000000000 / 2);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 10), 2000000000 / 10);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000), 2000000000 / 1000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(10000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000000ull), 2000000000 / 1000000);
}
TEST_F(fee, 1xmr)
{
// CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 and lower are clamped
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2), 200000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / 2), 200000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / 100), 200000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, 1), 200000000);
// higher is inverse proportional
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 2), 200000000 / 2);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 10), 200000000 / 10);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000), 200000000 / 1000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(1000000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000000ull), 200000000 / 1000000);
}
TEST_F(fee, dot3xmr)
{
// CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 and lower are clamped
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2), 60000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / 2), 60000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 / 100), 60000000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, 1), 60000000);
// higher is inverse proportional
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 2), 60000000 / 2);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 10), 60000000 / 10);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000), 60000000 / 1000);
ASSERT_EQ(Blockchain::get_dynamic_per_kb_fee(300000000000, CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000000ull), 60000000 / 1000000);
}
static bool is_more_or_less(double x, double y)
{
return fabs(y - x) < 0.001;
}
static const double MAX_MULTIPLIER = 166.f;
TEST_F(fee, double_at_full)
{
static const uint64_t block_rewards[] = {
20000000000000ull, // 20 monero
13000000000000ull,
1000000000000ull,
600000000000ull, // .6 monero, minimum reward per block at 2min
300000000000ull, // .3 monero, minimum reward per block at 1min
};
static const uint64_t median_block_sizes[] = {
CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2,
CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 2,
CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 10,
CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000,
CRYPTONOTE_BLOCK_GRANTED_FULL_REWARD_ZONE_V2 * 1000000ull
};
for (uint64_t block_reward: block_rewards)
{
for (uint64_t median_block_size: median_block_sizes)
{
ASSERT_TRUE(is_more_or_less(Blockchain::get_dynamic_per_kb_fee(block_reward, median_block_size) * (median_block_size / 1024.) * MAX_MULTIPLIER / (double)block_reward, 1.992 * 1000 / 1024));
}
}
}
}