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Merge pull request #3749

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872cb4ef blockchain: pop top if block version disagrees with the ideal fork version (stoffu)
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Riccardo Spagni 2018-05-21 20:45:35 +02:00
commit 791da4343c
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1 changed files with 47 additions and 0 deletions
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47
src/cryptonote_core/blockchain.cpp
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@ -441,6 +441,53 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline
MINFO("Blockchain initialized. last block: " << m_db->height() - 1 << ", " << epee::misc_utils::get_time_interval_string(timestamp_diff) << " time ago, current difficulty: " << get_difficulty_for_next_block());
m_db->block_txn_stop();
uint64_t num_popped_blocks = 0;
while (true)
{
const uint64_t top_height = m_db->height() - 1;
const crypto::hash top_id = m_db->top_block_hash();
const block top_block = m_db->get_top_block();
const uint8_t ideal_hf_version = get_ideal_hard_fork_version(top_height);
if (ideal_hf_version <= 1 || ideal_hf_version == top_block.major_version)
{
if (num_popped_blocks > 0)
MGINFO("Initial popping done, top block: " << top_id << ", top height: " << top_height << ", block version: " << (uint64_t)top_block.major_version);
break;
}
else
{
if (num_popped_blocks == 0)
MGINFO("Current top block " << top_id << " at height " << top_height << " has version " << (uint64_t)top_block.major_version << " which disagrees with the ideal version " << (uint64_t)ideal_hf_version);
if (num_popped_blocks % 100 == 0)
MGINFO("Popping blocks... " << top_height);
++num_popped_blocks;
block popped_block;
std::vector<transaction> popped_txs;
try
{
m_db->pop_block(popped_block, popped_txs);
}
// anything that could cause this to throw is likely catastrophic,
// so we re-throw
catch (const std::exception& e)
{
MERROR("Error popping block from blockchain: " << e.what());
throw;
}
catch (...)
{
MERROR("Error popping block from blockchain, throwing!");
throw;
}
}
}
if (num_popped_blocks > 0)
{
m_timestamps_and_difficulties_height = 0;
m_hardfork->reorganize_from_chain_height(get_current_blockchain_height());
m_tx_pool.on_blockchain_dec(m_db->height()-1, get_tail_id());
}
update_next_cumulative_size_limit();
return true;
}