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Diffstat (limited to 'src/blockchain_utilities/blockchain_import.cpp')
| -rw-r--r-- | src/blockchain_utilities/blockchain_import.cpp | 770 |
1 files changed, 770 insertions, 0 deletions
diff --git a/src/blockchain_utilities/blockchain_import.cpp b/src/blockchain_utilities/blockchain_import.cpp new file mode 100644 index 000000000..6777cc8fb --- /dev/null +++ b/src/blockchain_utilities/blockchain_import.cpp @@ -0,0 +1,770 @@ +// Copyright (c) 2014-2015, 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. + +#include <atomic> +#include <cstdio> +#include <algorithm> +#include <fstream> + +#include <boost/filesystem.hpp> +#include "bootstrap_file.h" +#include "bootstrap_serialization.h" +#include "cryptonote_core/cryptonote_format_utils.h" +#include "serialization/binary_utils.h" // dump_binary(), parse_binary() +#include "serialization/json_utils.h" // dump_json() +#include "include_base_utils.h" + +#include <lmdb.h> // for db flag arguments + +#include "fake_core.h" + +unsigned int epee::g_test_dbg_lock_sleep = 0; + +namespace +{ +// CONFIG +bool opt_batch = true; +bool opt_verify = true; // use add_new_block, which does verification before calling add_block +bool opt_resume = true; +bool opt_testnet = true; + +// number of blocks per batch transaction +// adjustable through command-line argument according to available RAM +#if !defined(WIN32) +uint64_t db_batch_size = 20000; +#else +// set a lower default batch size, pending possible LMDB issue with large transaction size +uint64_t db_batch_size = 1000; +#endif + +// when verifying, use a smaller default batch size so progress is more +// frequently saved +uint64_t db_batch_size_verify = 5000; + +std::string refresh_string = "\r \r"; +} + + + +namespace po = boost::program_options; + +using namespace cryptonote; +using namespace epee; + + +int parse_db_arguments(const std::string& db_arg_str, std::string& db_engine, int& mdb_flags) +{ + std::vector<std::string> db_args; + boost::split(db_args, db_arg_str, boost::is_any_of("#")); + db_engine = db_args.front(); + boost::algorithm::trim(db_engine); + + if (db_args.size() == 1) + { + return 0; + } + else if (db_args.size() > 2) + { + std::cerr << "unrecognized database argument format: " << db_arg_str << ENDL; + return 1; + } + + std::string db_arg_str2 = db_args[1]; + boost::split(db_args, db_arg_str2, boost::is_any_of(",")); + for (auto& it : db_args) + { + boost::algorithm::trim(it); + if (it.empty()) + continue; + LOG_PRINT_L1("LMDB flag: " << it); + if (it == "nosync") + mdb_flags |= MDB_NOSYNC; + else if (it == "nometasync") + mdb_flags |= MDB_NOMETASYNC; + else if (it == "writemap") + mdb_flags |= MDB_WRITEMAP; + else if (it == "mapasync") + mdb_flags |= MDB_MAPASYNC; + else if (it == "nordahead") + mdb_flags |= MDB_NORDAHEAD; + else + { + std::cerr << "unrecognized database flag: " << it << ENDL; + return 1; + } + } + return 0; +} + + +template <typename FakeCore> +int pop_blocks(FakeCore& simple_core, int num_blocks) +{ + bool use_batch = false; + if (opt_batch) + { + if (simple_core.support_batch) + use_batch = true; + else + LOG_PRINT_L0("WARNING: batch transactions enabled but unsupported or unnecessary for this database engine - ignoring"); + } + + if (use_batch) + simple_core.batch_start(); + + int quit = 0; + block popped_block; + std::vector<transaction> popped_txs; + for (int i=0; i < num_blocks; ++i) + { + // simple_core.m_storage.pop_block_from_blockchain() is private, so call directly through db + simple_core.m_storage.get_db().pop_block(popped_block, popped_txs); + quit = 1; + } + + + + if (use_batch) + { + if (quit > 1) + { + // There was an error, so don't commit pending data. + // Destructor will abort write txn. + } + else + { + simple_core.batch_stop(); + } +#if !defined(BLOCKCHAIN_DB) || (BLOCKCHAIN_DB == DB_LMDB) + simple_core.m_storage.get_db().show_stats(); +#endif + } + + return num_blocks; +} + +template <typename FakeCore> +int import_from_file(FakeCore& simple_core, std::string& import_file_path, uint64_t stop_height=0) +{ +#if !defined(BLOCKCHAIN_DB) + static_assert(std::is_same<fake_core_memory, FakeCore>::value || std::is_same<fake_core_lmdb, FakeCore>::value, + "FakeCore constraint error"); +#endif +#if !defined(BLOCKCHAIN_DB) || (BLOCKCHAIN_DB == DB_LMDB) + if (std::is_same<fake_core_lmdb, FakeCore>::value) + { + // Reset stats, in case we're using newly created db, accumulating stats + // from addition of genesis block. + // This aligns internal db counts with importer counts. + simple_core.m_storage.get_db().reset_stats(); + } +#endif + boost::filesystem::path raw_file_path(import_file_path); + boost::system::error_code ec; + if (!boost::filesystem::exists(raw_file_path, ec)) + { + LOG_PRINT_L0("bootstrap file not found: " << raw_file_path); + return false; + } + + BootstrapFile bootstrap; + // BootstrapFile bootstrap(import_file_path); + uint64_t total_source_blocks = bootstrap.count_blocks(import_file_path); + LOG_PRINT_L0("bootstrap file last block number: " << total_source_blocks-1 << " (zero-based height) total blocks: " << total_source_blocks); + + std::cout << ENDL; + std::cout << "Preparing to read blocks..." << ENDL; + std::cout << ENDL; + + std::ifstream import_file; + import_file.open(import_file_path, std::ios_base::binary | std::ifstream::in); + + uint64_t h = 0; + uint64_t num_imported = 0; + if (import_file.fail()) + { + LOG_PRINT_L0("import_file.open() fail"); + return false; + } + + // 4 byte magic + (currently) 1024 byte header structures + bootstrap.seek_to_first_chunk(import_file); + + std::string str1; + char buffer1[1024]; + char buffer_block[BUFFER_SIZE]; + block b; + transaction tx; + int quit = 0; + uint64_t bytes_read = 0; + + uint64_t start_height = 1; + if (opt_resume) + start_height = simple_core.m_storage.get_current_blockchain_height(); + + // Note that a new blockchain will start with block number 0 (total blocks: 1) + // due to genesis block being added at initialization. + + if (! stop_height) + { + stop_height = total_source_blocks - 1; + } + + // These are what we'll try to use, and they don't have to be a determination + // from source and destination blockchains, but those are the defaults. + LOG_PRINT_L0("start block: " << start_height << " stop block: " << + stop_height); + + bool use_batch = false; + if (opt_batch) + { + if (simple_core.support_batch) + use_batch = true; + else + LOG_PRINT_L0("WARNING: batch transactions enabled but unsupported or unnecessary for this database engine - ignoring"); + } + + if (use_batch) + simple_core.batch_start(); + + LOG_PRINT_L0("Reading blockchain from bootstrap file..."); + std::cout << ENDL; + + // Within the loop, we skip to start_height before we start adding. + // TODO: Not a bottleneck, but we can use what's done in count_blocks() and + // only do the chunk size reads, skipping the chunk content reads until we're + // at start_height. + while (! quit) + { + uint32_t chunk_size; + import_file.read(buffer1, sizeof(chunk_size)); + // TODO: bootstrap.read_chunk(); + if (! import_file) { + std::cout << refresh_string; + LOG_PRINT_L0("End of file reached"); + quit = 1; + break; + } + bytes_read += sizeof(chunk_size); + + str1.assign(buffer1, sizeof(chunk_size)); + if (! ::serialization::parse_binary(str1, chunk_size)) + { + throw std::runtime_error("Error in deserialization of chunk size"); + } + LOG_PRINT_L1("chunk_size: " << chunk_size); + + if (chunk_size > BUFFER_SIZE) + { + LOG_PRINT_L0("WARNING: chunk_size " << chunk_size << " > BUFFER_SIZE " << BUFFER_SIZE); + throw std::runtime_error("Aborting: chunk size exceeds buffer size"); + } + if (chunk_size > 100000) + { + LOG_PRINT_L0("NOTE: chunk_size " << chunk_size << " > 100000"); + } + else if (chunk_size < 0) { + LOG_PRINT_L0("ERROR: chunk_size " << chunk_size << " < 0"); + return 2; + } + import_file.read(buffer_block, chunk_size); + if (! import_file) { + LOG_PRINT_L0("ERROR: unexpected end of file: bytes read before error: " + << import_file.gcount() << " of chunk_size " << chunk_size); + return 2; + } + bytes_read += chunk_size; + LOG_PRINT_L3("Total bytes read: " << bytes_read); + + if (h + NUM_BLOCKS_PER_CHUNK < start_height + 1) + { + h += NUM_BLOCKS_PER_CHUNK; + continue; + } + if (h > stop_height) + { + std::cout << refresh_string << "block " << h-1 + << " / " << stop_height + << std::flush; + std::cout << ENDL << ENDL; + LOG_PRINT_L0("Specified block number reached - stopping. block: " << h-1 << " total blocks: " << h); + quit = 1; + break; + } + + try + { + str1.assign(buffer_block, chunk_size); + bootstrap::block_package bp; + if (! ::serialization::parse_binary(str1, bp)) + throw std::runtime_error("Error in deserialization of chunk"); + + int display_interval = 1000; + int progress_interval = 10; + // NOTE: use of NUM_BLOCKS_PER_CHUNK is a placeholder in case multi-block chunks are later supported. + for (int chunk_ind = 0; chunk_ind < NUM_BLOCKS_PER_CHUNK; ++chunk_ind) + { + ++h; + if ((h-1) % display_interval == 0) + { + std::cout << refresh_string; + LOG_PRINT_L0("loading block number " << h-1); + } + else + { + LOG_PRINT_L3("loading block number " << h-1); + } + b = bp.block; + LOG_PRINT_L2("block prev_id: " << b.prev_id << ENDL); + + if ((h-1) % progress_interval == 0) + { + std::cout << refresh_string << "block " << h-1 + << " / " << stop_height + << std::flush; + } + + std::vector<transaction> txs; + std::vector<transaction> archived_txs; + + archived_txs = bp.txs; + + // std::cout << refresh_string; + // LOG_PRINT_L1("txs: " << archived_txs.size()); + + // if archived_txs is invalid + // { + // std::cout << refresh_string; + // LOG_PRINT_RED_L0("exception while de-archiving txs, height=" << h); + // quit = 1; + // break; + // } + + // tx number 1: coinbase tx + // tx number 2 onwards: archived_txs + unsigned int tx_num = 1; + for (const transaction& tx : archived_txs) + { + ++tx_num; + // if tx is invalid + // { + // LOG_PRINT_RED_L0("exception while indexing tx from txs, height=" << h <<", tx_num=" << tx_num); + // quit = 1; + // break; + // } + + // std::cout << refresh_string; + // LOG_PRINT_L1("tx hash: " << get_transaction_hash(tx)); + + // crypto::hash hsh = null_hash; + // size_t blob_size = 0; + // NOTE: all tx hashes except for coinbase tx are available in the block data + // get_transaction_hash(tx, hsh, blob_size); + // LOG_PRINT_L0("tx " << tx_num << " " << hsh << " : " << ENDL); + // LOG_PRINT_L0(obj_to_json_str(tx) << ENDL); + + // add blocks with verification. + // for Blockchain and blockchain_storage add_new_block(). + if (opt_verify) + { + // crypto::hash hsh = null_hash; + // size_t blob_size = 0; + // get_transaction_hash(tx, hsh, blob_size); + tx_verification_context tvc = AUTO_VAL_INIT(tvc); + bool r = true; + r = simple_core.m_pool.add_tx(tx, tvc, true); + if (!r) + { + LOG_PRINT_RED_L0("failed to add transaction to transaction pool, height=" << h <<", tx_num=" << tx_num); + quit = 1; + break; + } + } + else + { + // for add_block() method, without (much) processing. + // don't add coinbase transaction to txs. + // + // because add_block() calls + // add_transaction(blk_hash, blk.miner_tx) first, and + // then a for loop for the transactions in txs. + txs.push_back(tx); + } + } + + if (opt_verify) + { + block_verification_context bvc = boost::value_initialized<block_verification_context>(); + simple_core.m_storage.add_new_block(b, bvc); + + if (bvc.m_verifivation_failed) + { + LOG_PRINT_L0("Failed to add block to blockchain, verification failed, height = " << h); + LOG_PRINT_L0("skipping rest of file"); + // ok to commit previously batched data because it failed only in + // verification of potential new block with nothing added to batch + // yet + quit = 1; + break; + } + if (! bvc.m_added_to_main_chain) + { + LOG_PRINT_L0("Failed to add block to blockchain, height = " << h); + LOG_PRINT_L0("skipping rest of file"); + // make sure we don't commit partial block data + quit = 2; + break; + } + } + else + { + size_t block_size; + difficulty_type cumulative_difficulty; + uint64_t coins_generated; + + block_size = bp.block_size; + cumulative_difficulty = bp.cumulative_difficulty; + coins_generated = bp.coins_generated; + + // std::cout << refresh_string; + // LOG_PRINT_L2("block_size: " << block_size); + // LOG_PRINT_L2("cumulative_difficulty: " << cumulative_difficulty); + // LOG_PRINT_L2("coins_generated: " << coins_generated); + + try + { + simple_core.add_block(b, block_size, cumulative_difficulty, coins_generated, txs); + } + catch (const std::exception& e) + { + std::cout << refresh_string; + LOG_PRINT_RED_L0("Error adding block to blockchain: " << e.what()); + quit = 2; // make sure we don't commit partial block data + break; + } + } + ++num_imported; + + if (use_batch) + { + if ((h-1) % db_batch_size == 0) + { + std::cout << refresh_string; + // zero-based height + std::cout << ENDL << "[- batch commit at height " << h-1 << " -]" << ENDL; + simple_core.batch_stop(); + simple_core.batch_start(); + std::cout << ENDL; +#if !defined(BLOCKCHAIN_DB) || (BLOCKCHAIN_DB == DB_LMDB) + simple_core.m_storage.get_db().show_stats(); +#endif + } + } + } + } + catch (const std::exception& e) + { + std::cout << refresh_string; + LOG_PRINT_RED_L0("exception while reading from file, height=" << h); + return 2; + } + } // while + + import_file.close(); + + if (use_batch) + { + if (quit > 1) + { + // There was an error, so don't commit pending data. + // Destructor will abort write txn. + } + else + { + simple_core.batch_stop(); + } +#if !defined(BLOCKCHAIN_DB) || (BLOCKCHAIN_DB == DB_LMDB) + simple_core.m_storage.get_db().show_stats(); +#endif + LOG_PRINT_L0("Number of blocks imported: " << num_imported) + if (h > 0) + // TODO: if there was an error, the last added block is probably at zero-based height h-2 + LOG_PRINT_L0("Finished at block: " << h-1 << " total blocks: " << h); + } + std::cout << ENDL; + return 0; +} + +int main(int argc, char* argv[]) +{ + std::string import_filename = BLOCKCHAIN_RAW; +#if defined(BLOCKCHAIN_DB) && (BLOCKCHAIN_DB == DB_MEMORY) + std::string default_db_engine = "memory"; +#else + std::string default_db_engine = "lmdb"; +#endif + + uint32_t log_level = LOG_LEVEL_0; + uint64_t num_blocks = 0; + uint64_t block_height = 0; + std::string dirname; + std::string db_arg_str; + + boost::filesystem::path default_data_path {tools::get_default_data_dir()}; + boost::filesystem::path default_testnet_data_path {default_data_path / "testnet"}; + + po::options_description desc_cmd_only("Command line options"); + po::options_description desc_cmd_sett("Command line options and settings options"); + const command_line::arg_descriptor<uint32_t> arg_log_level = {"log-level", "", log_level}; + const command_line::arg_descriptor<uint64_t> arg_block_height = {"block-number", "stop at block number", block_height}; + const command_line::arg_descriptor<uint64_t> arg_batch_size = {"batch-size", "", db_batch_size}; + const command_line::arg_descriptor<uint64_t> arg_pop_blocks = {"pop-blocks", "", num_blocks}; + const command_line::arg_descriptor<bool> arg_testnet_on = { + "testnet" + , "Run on testnet." + , false + }; + const command_line::arg_descriptor<bool> arg_count_blocks = { + "count-blocks" + , "Count blocks in bootstrap file and exit" + , false + }; + const command_line::arg_descriptor<std::string> arg_database = { + "database", "available: memory, lmdb" + , default_db_engine + }; + const command_line::arg_descriptor<bool> arg_verify = {"verify", + "Verify blocks and transactions during import", true}; + const command_line::arg_descriptor<bool> arg_batch = {"batch", + "Batch transactions for faster import", true}; + const command_line::arg_descriptor<bool> arg_resume = {"resume", + "Resume from current height if output database already exists", true}; + + command_line::add_arg(desc_cmd_sett, command_line::arg_data_dir, default_data_path.string()); + command_line::add_arg(desc_cmd_sett, command_line::arg_testnet_data_dir, default_testnet_data_path.string()); + command_line::add_arg(desc_cmd_sett, arg_log_level); + command_line::add_arg(desc_cmd_sett, arg_block_height); + command_line::add_arg(desc_cmd_sett, arg_batch_size); + command_line::add_arg(desc_cmd_sett, arg_pop_blocks); + command_line::add_arg(desc_cmd_sett, arg_testnet_on); + command_line::add_arg(desc_cmd_sett, arg_database); + + command_line::add_arg(desc_cmd_only, arg_count_blocks); + command_line::add_arg(desc_cmd_only, command_line::arg_help); + + // call add_options() directly for these arguments since + // command_line helpers support only boolean switch, not boolean argument + desc_cmd_sett.add_options() + (arg_verify.name, make_semantic(arg_verify), arg_verify.description) + (arg_batch.name, make_semantic(arg_batch), arg_batch.description) + (arg_resume.name, make_semantic(arg_resume), arg_resume.description) + ; + + po::options_description desc_options("Allowed options"); + desc_options.add(desc_cmd_only).add(desc_cmd_sett); + + po::variables_map vm; + bool r = command_line::handle_error_helper(desc_options, [&]() + { + po::store(po::parse_command_line(argc, argv, desc_options), vm); + po::notify(vm); + return true; + }); + if (! r) + return 1; + + log_level = command_line::get_arg(vm, arg_log_level); + opt_verify = command_line::get_arg(vm, arg_verify); + opt_batch = command_line::get_arg(vm, arg_batch); + opt_resume = command_line::get_arg(vm, arg_resume); + block_height = command_line::get_arg(vm, arg_block_height); + db_batch_size = command_line::get_arg(vm, arg_batch_size); + + if (command_line::get_arg(vm, command_line::arg_help)) + { + std::cout << CRYPTONOTE_NAME << " v" << MONERO_VERSION_FULL << ENDL << ENDL; + std::cout << desc_options << std::endl; + return 1; + } + + if (! opt_batch && ! vm["batch-size"].defaulted()) + { + std::cerr << "Error: batch-size set, but batch option not enabled" << ENDL; + exit(1); + } + if (! db_batch_size) + { + std::cerr << "Error: batch-size must be > 0" << ENDL; + exit(1); + } + if (opt_verify && vm["batch-size"].defaulted()) + { + // usually want batch size default lower if verify on, so progress can be + // frequently saved. + // + // currently, with Windows, default batch size is low, so ignore + // default db_batch_size_verify unless it's even lower + if (db_batch_size > db_batch_size_verify) + { + db_batch_size = db_batch_size_verify; + } + } + uint64_t stop_height = 0; + if (! vm["block-number"].defaulted()) + { + stop_height = block_height; + } + + std::vector<std::string> db_engines {"memory", "lmdb"}; + + opt_testnet = command_line::get_arg(vm, arg_testnet_on); + auto data_dir_arg = opt_testnet ? command_line::arg_testnet_data_dir : command_line::arg_data_dir; + dirname = command_line::get_arg(vm, data_dir_arg); + db_arg_str = command_line::get_arg(vm, arg_database); + + log_space::get_set_log_detalisation_level(true, log_level); + log_space::log_singletone::add_logger(LOGGER_CONSOLE, NULL, NULL); + LOG_PRINT_L0("Starting..."); + LOG_PRINT_L0("Setting log level = " << log_level); + + boost::filesystem::path file_path {dirname}; + std::string import_file_path; + + import_file_path = (file_path / "export" / import_filename).string(); + if (command_line::has_arg(vm, arg_count_blocks)) + { + BootstrapFile bootstrap; + bootstrap.count_blocks(import_file_path); + exit(0); + } + + + std::string db_engine; + int mdb_flags = 0; + int res = 0; + res = parse_db_arguments(db_arg_str, db_engine, mdb_flags); + if (res) + { + std::cerr << "Error parsing database argument(s)" << ENDL; + exit(1); + } + + if (std::find(db_engines.begin(), db_engines.end(), db_engine) == db_engines.end()) + { + std::cerr << "Invalid database engine: " << db_engine << std::endl; + exit(1); + } + + LOG_PRINT_L0("database: " << db_engine); + LOG_PRINT_L0("verify: " << std::boolalpha << opt_verify << std::noboolalpha); + if (opt_batch) + { + LOG_PRINT_L0("batch: " << std::boolalpha << opt_batch << std::noboolalpha + << " batch size: " << db_batch_size); + } + else + { + LOG_PRINT_L0("batch: " << std::boolalpha << opt_batch << std::noboolalpha); + } + LOG_PRINT_L0("resume: " << std::boolalpha << opt_resume << std::noboolalpha); + LOG_PRINT_L0("testnet: " << std::boolalpha << opt_testnet << std::noboolalpha); + + LOG_PRINT_L0("bootstrap file path: " << import_file_path); + LOG_PRINT_L0("database path: " << file_path.string()); + + try + { + + // fake_core needed for verification to work when enabled. + // + // NOTE: don't need fake_core method of doing things when we're going to call + // BlockchainDB add_block() directly and have available the 3 block + // properties to do so. Both ways work, but fake core isn't necessary in that + // circumstance. + + // for multi_db_runtime: +#if !defined(BLOCKCHAIN_DB) + if (db_engine == "lmdb") + { + fake_core_lmdb simple_core(dirname, opt_testnet, opt_batch, mdb_flags); + import_from_file(simple_core, import_file_path, stop_height); + } + else if (db_engine == "memory") + { + fake_core_memory simple_core(dirname, opt_testnet); + import_from_file(simple_core, import_file_path, stop_height); + } + else + { + std::cerr << "database engine unrecognized" << ENDL; + exit(1); + } + + // for multi_db_compile: +#else + if (db_engine != default_db_engine) + { + std::cerr << "Invalid database engine for compiled version: " << db_engine << std::endl; + exit(1); + } +#if BLOCKCHAIN_DB == DB_LMDB + fake_core_lmdb simple_core(dirname, opt_testnet, opt_batch, mdb_flags); +#else + fake_core_memory simple_core(dirname, opt_testnet); +#endif + + if (! vm["pop-blocks"].defaulted()) + { + num_blocks = command_line::get_arg(vm, arg_pop_blocks); + LOG_PRINT_L0("height: " << simple_core.m_storage.get_current_blockchain_height()); + pop_blocks(simple_core, num_blocks); + LOG_PRINT_L0("height: " << simple_core.m_storage.get_current_blockchain_height()); + exit(0); + } + + import_from_file(simple_core, import_file_path, stop_height); +#endif + + } + catch (const DB_ERROR& e) + { + std::cout << std::string("Error loading blockchain db: ") + e.what() + " -- shutting down now" << ENDL; + exit(1); + } + + // destructors called at exit: + // + // ensure db closed + // - transactions properly checked and handled + // - disk sync if needed + // + // fake_core object's destructor is called when it goes out of scope. For an + // LMDB fake_core, it calls Blockchain::deinit() on its object, which in turn + // calls delete on its BlockchainDB derived class' object, which closes its + // files. +} |