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core: add --block-rate-notify

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This runs a command whenever the block rate deviates too much
from the expectation
This commit is contained in:
moneromooo-monero 2019-02-06 17:09:28 +00:00
parent 28b6dbf263
commit d4fb9641e0
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GPG Key ID: 686F07454D6CEFC3
2 changed files with 33 additions and 0 deletions
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31
src/cryptonote_core/cryptonote_core.cpp
View File

@ -192,6 +192,18 @@ namespace cryptonote
"replaced by the number of new blocks in the new chain"
, ""
};
static const command_line::arg_descriptor<std::string> arg_block_rate_notify = {
"block-rate-notify"
, "Run a program when the block rate undergoes large fluctuations. This might "
"be a sign of large amounts of hash rate going on and off the Monero network, "
"and thus be of potential interest in predicting attacks. %t will be replaced "
"by the number of minutes for the observation window, %b by the number of "
"blocks observed within that window, and %e by the number of blocks that was "
"expected in that window. It is suggested that this notification is used to "
"automatically increase the number of confirmations required before a payment "
"is acted upon."
, ""
};
//-----------------------------------------------------------------------------------------------
core::core(i_cryptonote_protocol* pprotocol):
@ -308,6 +320,7 @@ namespace cryptonote
command_line::add_arg(desc, arg_block_notify);
command_line::add_arg(desc, arg_prune_blockchain);
command_line::add_arg(desc, arg_reorg_notify);
command_line::add_arg(desc, arg_block_rate_notify);
miner::init_options(desc);
BlockchainDB::init_options(desc);
@ -600,6 +613,16 @@ namespace cryptonote
MERROR("Failed to parse reorg notify spec");
}
try
{
if (!command_line::is_arg_defaulted(vm, arg_block_rate_notify))
m_block_rate_notify.reset(new tools::Notify(command_line::get_arg(vm, arg_block_rate_notify).c_str()));
}
catch (const std::exception &e)
{
MERROR("Failed to parse block rate notify spec: " << e.what());
}
const std::pair<uint8_t, uint64_t> regtest_hard_forks[3] = {std::make_pair(1, 0), std::make_pair(Blockchain::get_hard_fork_heights(MAINNET).back().version, 1), std::make_pair(0, 0)};
const cryptonote::test_options regtest_test_options = {
regtest_hard_forks,
@ -1776,6 +1799,14 @@ namespace cryptonote
if (p < threshold)
{
MWARNING("There were " << b << " blocks in the last " << seconds[n] / 60 << " minutes, there might be large hash rate changes, or we might be partitioned, cut off from the Monero network or under attack. Or it could be just sheer bad luck.");
std::shared_ptr<tools::Notify> block_rate_notify = m_block_rate_notify;
if (block_rate_notify)
{
auto expected = seconds[n] / DIFFICULTY_TARGET_V2;
block_rate_notify->notify("%t", std::to_string(seconds[n] / 60).c_str(), "%b", std::to_string(b).c_str(), "%e", std::to_string(expected).c_str(), NULL);
}
break; // no need to look further
}
}

2
src/cryptonote_core/cryptonote_core.h
View File

@ -1062,6 +1062,8 @@ namespace cryptonote
bool m_fluffy_blocks_enabled;
bool m_offline;
bool m_pad_transactions;
std::shared_ptr<tools::Notify> m_block_rate_notify;
};
}