diff options
Diffstat (limited to 'src/blockchain_db/lmdb')
| -rw-r--r-- | src/blockchain_db/lmdb/db_lmdb.cpp | 98 | ||||
| -rw-r--r-- | src/blockchain_db/lmdb/db_lmdb.h | 1 |
2 files changed, 99 insertions, 0 deletions
diff --git a/src/blockchain_db/lmdb/db_lmdb.cpp b/src/blockchain_db/lmdb/db_lmdb.cpp index 5093015f2..05027c0ef 100644 --- a/src/blockchain_db/lmdb/db_lmdb.cpp +++ b/src/blockchain_db/lmdb/db_lmdb.cpp @@ -3107,6 +3107,104 @@ bool BlockchainLMDB::get_pruned_tx_blobs_from(const crypto::hash& h, size_t coun return true; } +bool BlockchainLMDB::get_blocks_from(uint64_t start_height, size_t min_count, size_t max_count, size_t max_size, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata>>>>& blocks, bool pruned, bool skip_coinbase, bool get_miner_tx_hash) const +{ + LOG_PRINT_L3("BlockchainLMDB::" << __func__); + check_open(); + + TXN_PREFIX_RDONLY(); + RCURSOR(blocks); + RCURSOR(tx_indices); + RCURSOR(txs_pruned); + if (!pruned) + { + RCURSOR(txs_prunable); + } + + blocks.reserve(std::min<size_t>(max_count, 10000)); // guard against very large max count if only checking bytes + const uint64_t blockchain_height = height(); + uint64_t size = 0; + MDB_val_copy<uint64_t> key(start_height); + MDB_val k, v, val_tx_id; + uint64_t tx_id = ~0; + MDB_cursor_op op = MDB_SET; + for (uint64_t h = start_height; h < blockchain_height && blocks.size() < max_count && (size < max_size || blocks.size() < min_count); ++h) + { + MDB_cursor_op op = h == start_height ? MDB_SET : MDB_NEXT; + int result = mdb_cursor_get(m_cur_blocks, &key, &v, op); + if (result == MDB_NOTFOUND) + throw0(BLOCK_DNE(std::string("Attempt to get block from height ").append(boost::lexical_cast<std::string>(h)).append(" failed -- block not in db").c_str())); + else if (result) + throw0(DB_ERROR(lmdb_error("Error attempting to retrieve a block from the db", result).c_str())); + + blocks.resize(blocks.size() + 1); + auto ¤t_block = blocks.back(); + + current_block.first.first.assign(reinterpret_cast<char*>(v.mv_data), v.mv_size); + size += v.mv_size; + + cryptonote::block b; + if (!parse_and_validate_block_from_blob(current_block.first.first, b)) + throw0(DB_ERROR("Invalid block")); + current_block.first.second = get_miner_tx_hash ? cryptonote::get_transaction_hash(b.miner_tx) : crypto::null_hash; + + // get the tx_id for the first tx (the first block's coinbase tx) + if (h == start_height) + { + crypto::hash hash = cryptonote::get_transaction_hash(b.miner_tx); + MDB_val_set(v, hash); + result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &v, MDB_GET_BOTH); + if (result) + throw0(DB_ERROR(lmdb_error("Error attempting to retrieve block coinbase transaction from the db: ", result).c_str())); + + const txindex *tip = (const txindex *)v.mv_data; + tx_id = tip->data.tx_id; + val_tx_id.mv_data = &tx_id; + val_tx_id.mv_size = sizeof(tx_id); + } + + if (skip_coinbase) + { + result = mdb_cursor_get(m_cur_txs_pruned, &val_tx_id, &v, op); + if (result) + throw0(DB_ERROR(lmdb_error("Error attempting to retrieve transaction data from the db: ", result).c_str())); + if (!pruned) + { + result = mdb_cursor_get(m_cur_txs_prunable, &val_tx_id, &v, op); + if (result) + throw0(DB_ERROR(lmdb_error("Error attempting to retrieve transaction data from the db: ", result).c_str())); + } + } + + op = MDB_NEXT; + + current_block.second.reserve(b.tx_hashes.size()); + for (const auto &tx_hash: b.tx_hashes) + { + // get pruned data + cryptonote::blobdata tx_blob; + result = mdb_cursor_get(m_cur_txs_pruned, &val_tx_id, &v, op); + if (result) + throw0(DB_ERROR(lmdb_error("Error attempting to retrieve transaction data from the db: ", result).c_str())); + tx_blob.assign((const char*)v.mv_data, v.mv_size); + + if (!pruned) + { + result = mdb_cursor_get(m_cur_txs_prunable, &val_tx_id, &v, op); + if (result) + throw0(DB_ERROR(lmdb_error("Error attempting to retrieve transaction data from the db: ", result).c_str())); + tx_blob.append(reinterpret_cast<const char*>(v.mv_data), v.mv_size); + } + current_block.second.push_back(std::make_pair(tx_hash, std::move(tx_blob))); + size += current_block.second.back().second.size(); + } + } + + TXN_POSTFIX_RDONLY(); + + return true; +} + bool BlockchainLMDB::get_prunable_tx_blob(const crypto::hash& h, cryptonote::blobdata &bd) const { LOG_PRINT_L3("BlockchainLMDB::" << __func__); diff --git a/src/blockchain_db/lmdb/db_lmdb.h b/src/blockchain_db/lmdb/db_lmdb.h index 7c0b4c72c..6ddeed671 100644 --- a/src/blockchain_db/lmdb/db_lmdb.h +++ b/src/blockchain_db/lmdb/db_lmdb.h @@ -255,6 +255,7 @@ public: virtual bool get_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const; virtual bool get_pruned_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const; virtual bool get_pruned_tx_blobs_from(const crypto::hash& h, size_t count, std::vector<cryptonote::blobdata> &bd) const; + virtual bool get_blocks_from(uint64_t start_height, size_t min_count, size_t max_count, size_t max_size, std::vector<std::pair<std::pair<cryptonote::blobdata, crypto::hash>, std::vector<std::pair<crypto::hash, cryptonote::blobdata>>>>& blocks, bool pruned, bool skip_coinbase, bool get_miner_tx_hash) const; virtual bool get_prunable_tx_blob(const crypto::hash& h, cryptonote::blobdata &tx) const; virtual bool get_prunable_tx_hash(const crypto::hash& tx_hash, crypto::hash &prunable_hash) const; |