mirror of
https://git.wownero.com/wownero/wownero.git
synced 2024-08-15 01:03:23 +00:00
blockchain_db: fix db txn ending too early
The db txn in add_block ending caused the entire overarching batch txn to stop. Also add a new guard class so a db txn can be stopped in the face of exceptions. Also use a read only db txn in init when the db itself is read only, and do not save the max tx size in that case.
This commit is contained in:
moneromooo-monero
parent
37345921ec
commit
5e673c03fe
9 changed files with 144 additions and 95 deletions
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@ -211,8 +211,6 @@ uint64_t BlockchainDB::add_block( const std::pair<block, blobdata>& blck
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if (blk.tx_hashes.size() != txs.size())
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throw std::runtime_error("Inconsistent tx/hashes sizes");
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block_txn_start(false);
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TIME_MEASURE_START(time1);
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crypto::hash blk_hash = get_block_hash(blk);
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TIME_MEASURE_FINISH(time1);
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@ -252,8 +250,6 @@ uint64_t BlockchainDB::add_block( const std::pair<block, blobdata>& blck
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m_hardfork->add(blk, prev_height);
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block_txn_stop();
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++num_calls;
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return prev_height;
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@ -770,9 +770,12 @@ public:
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*/
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virtual void set_batch_transactions(bool) = 0;
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virtual void block_txn_start(bool readonly=false) = 0;
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virtual void block_txn_stop() = 0;
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virtual void block_txn_abort() = 0;
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virtual void block_wtxn_start() = 0;
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virtual void block_wtxn_stop() = 0;
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virtual void block_wtxn_abort() = 0;
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virtual bool block_rtxn_start() const = 0;
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virtual void block_rtxn_stop() const = 0;
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virtual void block_rtxn_abort() const = 0;
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virtual void set_hard_fork(HardFork* hf);
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@ -1699,6 +1702,52 @@ public:
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}; // class BlockchainDB
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class db_txn_guard
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{
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public:
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db_txn_guard(BlockchainDB *db, bool readonly): db(db), readonly(readonly), active(false)
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{
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if (readonly)
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{
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active = db->block_rtxn_start();
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}
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else
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{
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db->block_wtxn_start();
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active = true;
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}
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}
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virtual ~db_txn_guard()
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{
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if (active)
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stop();
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}
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void stop()
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{
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if (readonly)
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db->block_rtxn_stop();
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else
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db->block_wtxn_stop();
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active = false;
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}
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void abort()
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{
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if (readonly)
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db->block_rtxn_abort();
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else
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db->block_wtxn_abort();
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active = false;
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}
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private:
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BlockchainDB *db;
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bool readonly;
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bool active;
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};
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class db_rtxn_guard: public db_txn_guard { public: db_rtxn_guard(BlockchainDB *db): db_txn_guard(db, true) {} };
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class db_wtxn_guard: public db_txn_guard { public: db_wtxn_guard(BlockchainDB *db): db_txn_guard(db, false) {} };
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BlockchainDB *new_db(const std::string& db_type);
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} // namespace cryptonote
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@ -3611,16 +3611,15 @@ void BlockchainLMDB::block_rtxn_stop() const
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memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
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}
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void BlockchainLMDB::block_txn_start(bool readonly)
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bool BlockchainLMDB::block_rtxn_start() const
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{
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if (readonly)
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{
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MDB_txn *mtxn;
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mdb_txn_cursors *mcur;
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block_rtxn_start(&mtxn, &mcur);
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return;
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}
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MDB_txn *mtxn;
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mdb_txn_cursors *mcur;
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return block_rtxn_start(&mtxn, &mcur);
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}
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void BlockchainLMDB::block_wtxn_start()
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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// Distinguish the exceptions here from exceptions that would be thrown while
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// using the txn and committing it.
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@ -3652,10 +3651,13 @@ void BlockchainLMDB::block_txn_start(bool readonly)
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throw0(DB_ERROR_TXN_START((std::string("Attempted to start new write txn when batch txn already exists in ")+__FUNCTION__).c_str()));
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}
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void BlockchainLMDB::block_txn_stop()
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void BlockchainLMDB::block_wtxn_stop()
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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if (m_write_txn && m_writer == boost::this_thread::get_id())
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if (!m_write_txn)
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throw0(DB_ERROR_TXN_START((std::string("Attempted to stop write txn when no such txn exists in ")+__FUNCTION__).c_str()));
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if (m_writer != boost::this_thread::get_id())
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throw0(DB_ERROR_TXN_START((std::string("Attempted to stop write txn from the wrong thread in ")+__FUNCTION__).c_str()));
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{
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if (! m_batch_active)
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{
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@ -3669,38 +3671,29 @@ void BlockchainLMDB::block_txn_stop()
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memset(&m_wcursors, 0, sizeof(m_wcursors));
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}
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}
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else if (m_tinfo->m_ti_rtxn)
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}
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void BlockchainLMDB::block_wtxn_abort()
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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if (!m_write_txn)
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throw0(DB_ERROR_TXN_START((std::string("Attempted to abort write txn when no such txn exists in ")+__FUNCTION__).c_str()));
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if (m_writer != boost::this_thread::get_id())
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throw0(DB_ERROR_TXN_START((std::string("Attempted to abort write txn from the wrong thread in ")+__FUNCTION__).c_str()));
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if (! m_batch_active)
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{
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mdb_txn_reset(m_tinfo->m_ti_rtxn);
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memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
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delete m_write_txn;
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m_write_txn = nullptr;
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memset(&m_wcursors, 0, sizeof(m_wcursors));
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}
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}
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void BlockchainLMDB::block_txn_abort()
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void BlockchainLMDB::block_rtxn_abort() const
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{
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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if (m_write_txn && m_writer == boost::this_thread::get_id())
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{
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if (! m_batch_active)
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{
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delete m_write_txn;
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m_write_txn = nullptr;
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memset(&m_wcursors, 0, sizeof(m_wcursors));
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}
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}
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else if (m_tinfo->m_ti_rtxn)
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{
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mdb_txn_reset(m_tinfo->m_ti_rtxn);
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memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
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}
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else
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{
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// This would probably mean an earlier exception was caught, but then we
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// proceeded further than we should have.
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throw0(DB_ERROR((std::string("BlockchainLMDB::") + __func__ +
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std::string(": block-level DB transaction abort called when write txn doesn't exist")
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).c_str()));
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}
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mdb_txn_reset(m_tinfo->m_ti_rtxn);
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memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
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}
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uint64_t BlockchainLMDB::add_block(const std::pair<block, blobdata>& blk, size_t block_weight, uint64_t long_term_block_weight, const difficulty_type& cumulative_difficulty, const uint64_t& coins_generated,
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@ -3728,11 +3721,6 @@ uint64_t BlockchainLMDB::add_block(const std::pair<block, blobdata>& blk, size_t
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{
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throw;
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}
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catch (...)
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{
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block_txn_abort();
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throw;
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}
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return ++m_height;
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}
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@ -3742,16 +3730,16 @@ void BlockchainLMDB::pop_block(block& blk, std::vector<transaction>& txs)
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LOG_PRINT_L3("BlockchainLMDB::" << __func__);
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check_open();
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block_txn_start(false);
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block_wtxn_start();
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try
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{
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BlockchainDB::pop_block(blk, txs);
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block_txn_stop();
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block_wtxn_stop();
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}
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catch (...)
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{
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block_txn_abort();
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block_wtxn_abort();
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throw;
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}
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}
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@ -310,11 +310,14 @@ public:
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virtual void batch_stop();
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virtual void batch_abort();
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virtual void block_txn_start(bool readonly);
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virtual void block_txn_stop();
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virtual void block_txn_abort();
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virtual bool block_rtxn_start(MDB_txn **mtxn, mdb_txn_cursors **mcur) const;
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virtual void block_wtxn_start();
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virtual void block_wtxn_stop();
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virtual void block_wtxn_abort();
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virtual bool block_rtxn_start() const;
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virtual void block_rtxn_stop() const;
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virtual void block_rtxn_abort() const;
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bool block_rtxn_start(MDB_txn **mtxn, mdb_txn_cursors **mcur) const;
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virtual void pop_block(block& blk, std::vector<transaction>& txs);
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@ -55,9 +55,13 @@ public:
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virtual bool batch_start(uint64_t batch_num_blocks=0, uint64_t batch_bytes=0) { return true; }
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virtual void batch_stop() {}
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virtual void set_batch_transactions(bool) {}
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virtual void block_txn_start(bool readonly=false) {}
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virtual void block_txn_stop() {}
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virtual void block_txn_abort() {}
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virtual void block_wtxn_start() {}
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virtual void block_wtxn_stop() {}
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virtual void block_wtxn_abort() {}
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virtual bool block_rtxn_start() const { return true; }
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virtual void block_rtxn_stop() const {}
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virtual void block_rtxn_abort() const {}
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virtual void drop_hard_fork_info() {}
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virtual bool block_exists(const crypto::hash& h, uint64_t *height) const { return false; }
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virtual cryptonote::blobdata get_block_blob_from_height(const uint64_t& height) const { return cryptonote::t_serializable_object_to_blob(get_block_from_height(height)); }
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@ -266,11 +266,9 @@ bool HardFork::reorganize_from_chain_height(uint64_t height)
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bool HardFork::rescan_from_block_height(uint64_t height)
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{
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CRITICAL_REGION_LOCAL(lock);
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db.block_txn_start(true);
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if (height >= db.height()) {
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db.block_txn_stop();
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db_rtxn_guard rtxn_guard(&db);
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if (height >= db.height())
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return false;
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}
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versions.clear();
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@ -293,8 +291,6 @@ bool HardFork::rescan_from_block_height(uint64_t height)
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current_fork_index = voted;
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}
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db.block_txn_stop();
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return true;
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}
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@ -428,6 +428,7 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline
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block bl;
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block_verification_context bvc = boost::value_initialized<block_verification_context>();
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generate_genesis_block(bl, get_config(m_nettype).GENESIS_TX, get_config(m_nettype).GENESIS_NONCE);
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db_wtxn_guard wtxn_guard(m_db);
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add_new_block(bl, bvc);
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CHECK_AND_ASSERT_MES(!bvc.m_verifivation_failed, false, "Failed to add genesis block to blockchain");
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}
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@ -443,7 +444,8 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline
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m_db->fixup();
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}
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m_db->block_txn_start(true);
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db_rtxn_guard rtxn_guard(m_db);
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// check how far behind we are
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uint64_t top_block_timestamp = m_db->get_top_block_timestamp();
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uint64_t timestamp_diff = time(NULL) - top_block_timestamp;
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@ -464,7 +466,8 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline
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#endif
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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());
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m_db->block_txn_stop();
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rtxn_guard.stop();
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uint64_t num_popped_blocks = 0;
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while (!m_db->is_read_only())
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@ -518,8 +521,11 @@ bool Blockchain::init(BlockchainDB* db, const network_type nettype, bool offline
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if (test_options && test_options->long_term_block_weight_window)
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m_long_term_block_weights_window = test_options->long_term_block_weight_window;
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if (!update_next_cumulative_weight_limit())
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return false;
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{
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db_txn_guard txn_guard(m_db, m_db->is_read_only());
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if (!update_next_cumulative_weight_limit())
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return false;
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}
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return true;
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}
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//------------------------------------------------------------------
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@ -725,6 +731,7 @@ bool Blockchain::reset_and_set_genesis_block(const block& b)
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m_db->reset();
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m_hardfork->init();
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db_wtxn_guard wtxn_guard(m_db);
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block_verification_context bvc = boost::value_initialized<block_verification_context>();
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add_new_block(b, bvc);
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if (!update_next_cumulative_weight_limit())
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@ -772,7 +779,7 @@ bool Blockchain::get_short_chain_history(std::list<crypto::hash>& ids) const
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if(!sz)
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return true;
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m_db->block_txn_start(true);
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db_rtxn_guard rtxn_guard(m_db);
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bool genesis_included = false;
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uint64_t current_back_offset = 1;
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while(current_back_offset < sz)
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@ -799,7 +806,6 @@ bool Blockchain::get_short_chain_history(std::list<crypto::hash>& ids) const
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{
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ids.push_back(m_db->get_block_hash_from_height(0));
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}
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m_db->block_txn_stop();
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return true;
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}
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@ -1866,7 +1872,7 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
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{
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LOG_PRINT_L3("Blockchain::" << __func__);
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CRITICAL_REGION_LOCAL(m_blockchain_lock);
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m_db->block_txn_start(true);
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db_rtxn_guard rtxn_guard (m_db);
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rsp.current_blockchain_height = get_current_blockchain_height();
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std::vector<std::pair<cryptonote::blobdata,block>> blocks;
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get_blocks(arg.blocks, blocks, rsp.missed_ids);
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@ -1893,7 +1899,6 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
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// as done below if any standalone transactions were requested
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// and missed.
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rsp.missed_ids.insert(rsp.missed_ids.end(), missed_tx_ids.begin(), missed_tx_ids.end());
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m_db->block_txn_stop();
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return false;
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}
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@ -1903,7 +1908,6 @@ bool Blockchain::handle_get_objects(NOTIFY_REQUEST_GET_OBJECTS::request& arg, NO
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//get and pack other transactions, if needed
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get_transactions_blobs(arg.txs, rsp.txs, rsp.missed_ids);
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m_db->block_txn_stop();
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return true;
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}
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//------------------------------------------------------------------
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@ -2075,14 +2079,13 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
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return false;
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}
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m_db->block_txn_start(true);
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db_rtxn_guard rtxn_guard(m_db);
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// make sure that the last block in the request's block list matches
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// the genesis block
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auto gen_hash = m_db->get_block_hash_from_height(0);
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if(qblock_ids.back() != gen_hash)
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{
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MCERROR("net.p2p", "Client sent wrong NOTIFY_REQUEST_CHAIN: genesis block mismatch: " << std::endl << "id: " << qblock_ids.back() << ", " << std::endl << "expected: " << gen_hash << "," << std::endl << " dropping connection");
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m_db->block_txn_abort();
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return false;
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}
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@ -2100,11 +2103,9 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
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catch (const std::exception& e)
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{
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MWARNING("Non-critical error trying to find block by hash in BlockchainDB, hash: " << *bl_it);
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m_db->block_txn_abort();
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return false;
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}
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}
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m_db->block_txn_stop();
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// this should be impossible, as we checked that we share the genesis block,
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// but just in case...
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@ -2295,7 +2296,7 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
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return false;
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}
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m_db->block_txn_start(true);
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db_rtxn_guard rtxn_guard(m_db);
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current_height = get_current_blockchain_height();
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const uint32_t pruning_seed = get_blockchain_pruning_seed();
|
||||
start_height = tools::get_next_unpruned_block_height(start_height, current_height, pruning_seed);
|
||||
|
|
@ -2307,7 +2308,6 @@ bool Blockchain::find_blockchain_supplement(const std::list<crypto::hash>& qbloc
|
|||
hashes.push_back(m_db->get_block_hash_from_height(i));
|
||||
}
|
||||
|
||||
m_db->block_txn_stop();
|
||||
return true;
|
||||
}
|
||||
|
||||
|
|
@ -2354,7 +2354,7 @@ bool Blockchain::find_blockchain_supplement(const uint64_t req_start_block, cons
|
|||
}
|
||||
}
|
||||
|
||||
m_db->block_txn_start(true);
|
||||
db_rtxn_guard rtxn_guard(m_db);
|
||||
total_height = get_current_blockchain_height();
|
||||
size_t count = 0, size = 0;
|
||||
blocks.reserve(std::min(std::min(max_count, (size_t)10000), (size_t)(total_height - start_height)));
|
||||
|
|
@ -2380,7 +2380,6 @@ bool Blockchain::find_blockchain_supplement(const uint64_t req_start_block, cons
|
|||
blocks.back().second.push_back(std::make_pair(b.tx_hashes[i], std::move(txs[i])));
|
||||
}
|
||||
}
|
||||
m_db->block_txn_stop();
|
||||
return true;
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
|
|
@ -3535,7 +3534,7 @@ bool Blockchain::handle_block_to_main_chain(const block& bl, const crypto::hash&
|
|||
|
||||
static bool seen_future_version = false;
|
||||
|
||||
m_db->block_txn_start(true);
|
||||
db_rtxn_guard rtxn_guard(m_db);
|
||||
uint64_t blockchain_height;
|
||||
const crypto::hash top_hash = get_tail_id(blockchain_height);
|
||||
++blockchain_height; // block height to chain height
|
||||
|
|
@ -3544,7 +3543,6 @@ bool Blockchain::handle_block_to_main_chain(const block& bl, const crypto::hash&
|
|||
MERROR_VER("Block with id: " << id << std::endl << "has wrong prev_id: " << bl.prev_id << std::endl << "expected: " << top_hash);
|
||||
bvc.m_verifivation_failed = true;
|
||||
leave:
|
||||
m_db->block_txn_stop();
|
||||
return false;
|
||||
}
|
||||
|
||||
|
|
@ -3827,7 +3825,7 @@ leave:
|
|||
if(precomputed)
|
||||
block_processing_time += m_fake_pow_calc_time;
|
||||
|
||||
m_db->block_txn_stop();
|
||||
rtxn_guard.stop();
|
||||
TIME_MEASURE_START(addblock);
|
||||
uint64_t new_height = 0;
|
||||
if (!bvc.m_verifivation_failed)
|
||||
|
|
@ -3945,8 +3943,6 @@ bool Blockchain::update_next_cumulative_weight_limit(uint64_t *long_term_effecti
|
|||
|
||||
LOG_PRINT_L3("Blockchain::" << __func__);
|
||||
|
||||
m_db->block_txn_start(false);
|
||||
|
||||
// when we reach this, the last hf version is not yet written to the db
|
||||
const uint64_t db_height = m_db->height();
|
||||
const uint8_t hf_version = get_current_hard_fork_version();
|
||||
|
|
@ -4009,9 +4005,8 @@ bool Blockchain::update_next_cumulative_weight_limit(uint64_t *long_term_effecti
|
|||
if (long_term_effective_median_block_weight)
|
||||
*long_term_effective_median_block_weight = m_long_term_effective_median_block_weight;
|
||||
|
||||
m_db->add_max_block_size(m_current_block_cumul_weight_limit);
|
||||
|
||||
m_db->block_txn_stop();
|
||||
if (!m_db->is_read_only())
|
||||
m_db->add_max_block_size(m_current_block_cumul_weight_limit);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
|
@ -4022,12 +4017,11 @@ bool Blockchain::add_new_block(const block& bl, block_verification_context& bvc)
|
|||
crypto::hash id = get_block_hash(bl);
|
||||
CRITICAL_REGION_LOCAL(m_tx_pool);//to avoid deadlock lets lock tx_pool for whole add/reorganize process
|
||||
CRITICAL_REGION_LOCAL1(m_blockchain_lock);
|
||||
m_db->block_txn_start(true);
|
||||
db_rtxn_guard rtxn_guard(m_db);
|
||||
if(have_block(id))
|
||||
{
|
||||
LOG_PRINT_L3("block with id = " << id << " already exists");
|
||||
bvc.m_already_exists = true;
|
||||
m_db->block_txn_stop();
|
||||
m_blocks_txs_check.clear();
|
||||
return false;
|
||||
}
|
||||
|
|
@ -4037,14 +4031,14 @@ bool Blockchain::add_new_block(const block& bl, block_verification_context& bvc)
|
|||
{
|
||||
//chain switching or wrong block
|
||||
bvc.m_added_to_main_chain = false;
|
||||
m_db->block_txn_stop();
|
||||
rtxn_guard.stop();
|
||||
bool r = handle_alternative_block(bl, id, bvc);
|
||||
m_blocks_txs_check.clear();
|
||||
return r;
|
||||
//never relay alternative blocks
|
||||
}
|
||||
|
||||
m_db->block_txn_stop();
|
||||
rtxn_guard.stop();
|
||||
return handle_block_to_main_chain(bl, id, bvc);
|
||||
}
|
||||
//------------------------------------------------------------------
|
||||
|
|
|
|||
|
|
@ -643,7 +643,15 @@ public:
|
|||
log_event("cryptonote::block");
|
||||
|
||||
cryptonote::block_verification_context bvc = AUTO_VAL_INIT(bvc);
|
||||
m_c.handle_incoming_block(t_serializable_object_to_blob(b), &b, bvc);
|
||||
cryptonote::blobdata bd = t_serializable_object_to_blob(b);
|
||||
std::vector<cryptonote::block> pblocks;
|
||||
if (m_c.prepare_handle_incoming_blocks(std::vector<cryptonote::block_complete_entry>(1, {bd, {}}), pblocks))
|
||||
{
|
||||
m_c.handle_incoming_block(bd, &b, bvc);
|
||||
m_c.cleanup_handle_incoming_blocks();
|
||||
}
|
||||
else
|
||||
bvc.m_verifivation_failed = true;
|
||||
bool r = check_block_verification_context(bvc, m_ev_index, b, m_validator);
|
||||
CHECK_AND_NO_ASSERT_MES(r, false, "block verification context check failed");
|
||||
return r;
|
||||
|
|
@ -666,7 +674,14 @@ public:
|
|||
log_event("serialized_block");
|
||||
|
||||
cryptonote::block_verification_context bvc = AUTO_VAL_INIT(bvc);
|
||||
m_c.handle_incoming_block(sr_block.data, NULL, bvc);
|
||||
std::vector<cryptonote::block> pblocks;
|
||||
if (m_c.prepare_handle_incoming_blocks(std::vector<cryptonote::block_complete_entry>(1, {sr_block.data, {}}), pblocks))
|
||||
{
|
||||
m_c.handle_incoming_block(sr_block.data, NULL, bvc);
|
||||
m_c.cleanup_handle_incoming_blocks();
|
||||
}
|
||||
else
|
||||
bvc.m_verifivation_failed = true;
|
||||
|
||||
cryptonote::block blk;
|
||||
std::stringstream ss;
|
||||
|
|
|
|||
|
|
@ -271,6 +271,8 @@ TYPED_TEST(BlockchainDBTest, AddBlock)
|
|||
this->get_filenames();
|
||||
this->init_hard_fork();
|
||||
|
||||
db_wtxn_guard guard(this->m_db);
|
||||
|
||||
// adding a block with no parent in the blockchain should throw.
|
||||
// note: this shouldn't be possible, but is a good (and cheap) failsafe.
|
||||
//
|
||||
|
|
@ -317,6 +319,8 @@ TYPED_TEST(BlockchainDBTest, RetrieveBlockData)
|
|||
this->get_filenames();
|
||||
this->init_hard_fork();
|
||||
|
||||
db_wtxn_guard guard(this->m_db);
|
||||
|
||||
ASSERT_NO_THROW(this->m_db->add_block(this->m_blocks[0], t_sizes[0], t_sizes[0], t_diffs[0], t_coins[0], this->m_txs[0]));
|
||||
|
||||
ASSERT_EQ(t_sizes[0], this->m_db->get_block_weight(0));
|
||||
|
|
|
|||
Loading…
Reference in a new issue