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Add blockchain_export utility

Browse Source 
Based on work by tomerkon.
See https://github.com/tomerkon/bitmonero
  src/cryptonote_core/bootfilesaver.{h,cpp}
  src/bootfilegen/bootfilegen.cpp
This commit is contained in:
warptangent 2015-02-16 04:20:55 -08:00
parent 275cbd4348
commit f6cbfb623b
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3 changed files with 470 additions and 0 deletions
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29
src/blockchain_converter/CMakeLists.txt
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@ -47,6 +47,20 @@ set(blockchain_import_private_headers
bitmonero_private_headers(blockchain_import
${blockchain_import_private_headers})
set(blockchain_export_sources
blockchain_export.cpp
)
set(blockchain_export_private_headers
import.h
blockchain_export.h
)
bitmonero_private_headers(blockchain_export
${blockchain_export_private_headers})
if (BLOCKCHAIN_DB STREQUAL DB_LMDB)
bitmonero_add_executable(blockchain_converter
${blockchain_converter_sources}
@ -79,3 +93,18 @@ add_dependencies(blockchain_import
set_property(TARGET blockchain_import
PROPERTY
OUTPUT_NAME "blockchain_import")
bitmonero_add_executable(blockchain_export
${blockchain_export_sources}
${blockchain_export_private_headers})
target_link_libraries(blockchain_export
LINK_PRIVATE
cryptonote_core
${CMAKE_THREAD_LIBS_INIT})
add_dependencies(blockchain_export
version)
set_property(TARGET blockchain_export
PROPERTY
OUTPUT_NAME "blockchain_export")

367
src/blockchain_converter/blockchain_export.cpp Normal file
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@ -0,0 +1,367 @@
// 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 <algorithm>
#include <cstdio>
#include <fstream>
#include <boost/iostreams/copy.hpp>
#include <atomic>
#include <boost/archive/binary_oarchive.hpp>
#include <boost/archive/binary_iarchive.hpp>
#include <boost/iostreams/stream_buffer.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/iostreams/device/back_inserter.hpp>
#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/filter/bzip2.hpp>
#include "common/command_line.h"
#include "version.h"
#include "blockchain_export.h"
#include "cryptonote_core/cryptonote_boost_serialization.h"
#include "import.h"
// #include "fake_core.h"
#define SOURCE_DB DB_MEMORY
// currently not supported:
// to use what was set at compile time (DB_MEMORY or DB_LMDB)
// #define SOURCE_DB BLOCKCHAIN_DB
static int max_chunk = 0;
static size_t height;
namespace po = boost::program_options;
using namespace cryptonote;
using namespace epee;
bool BlockchainExport::open(const boost::filesystem::path& dir_path)
{
if (boost::filesystem::exists(dir_path))
{
if (!boost::filesystem::is_directory(dir_path))
{
LOG_PRINT_RED_L0("export directory path is a file: " << dir_path);
return false;
}
}
else
{
if (!boost::filesystem::create_directory(dir_path))
{
LOG_PRINT_RED_L0("Failed to create directory " << dir_path);
return false;
}
}
std::string file_path = (dir_path / BLOCKCHAIN_RAW).string();
m_raw_data_file = new std::ofstream();
m_raw_data_file->open(file_path , std::ios_base::binary | std::ios_base::out| std::ios::trunc);
if (m_raw_data_file->fail())
return false;
m_output_stream = new boost::iostreams::stream<boost::iostreams::back_insert_device<buffer_type>>(m_buffer);
m_raw_archive = new boost::archive::binary_oarchive(*m_output_stream);
if (m_raw_archive == NULL)
return false;
return true;
}
void BlockchainExport::flush_chunk()
{
m_output_stream->flush();
char buffer[STR_LENGTH_OF_INT + 1];
int chunk_size = (int) m_buffer.size();
if (chunk_size > BUFFER_SIZE)
{
LOG_PRINT_L0("WARNING: chunk_size " << chunk_size << " > BUFFER_SIZE " << BUFFER_SIZE);
}
sprintf(buffer, STR_FORMAT_OF_INT, chunk_size);
m_raw_data_file->write(buffer, STR_LENGTH_OF_INT);
if (max_chunk < chunk_size)
{
max_chunk = chunk_size;
}
long pos_before = m_raw_data_file->tellp();
std::copy(m_buffer.begin(), m_buffer.end(), std::ostreambuf_iterator<char>(*m_raw_data_file));
m_raw_data_file->flush();
long pos_after = m_raw_data_file->tellp();
long num_chars_written = pos_after - pos_before;
if ((int) num_chars_written != chunk_size)
{
LOG_PRINT_RED_L0("INTERNAL ERROR: num chars wrote NEQ buffer size. height = " << height);
}
m_buffer.clear();
delete m_raw_archive;
delete m_output_stream;
m_output_stream = new boost::iostreams::stream<boost::iostreams::back_insert_device<buffer_type>>(m_buffer);
m_raw_archive = new boost::archive::binary_oarchive(*m_output_stream);
}
void BlockchainExport::serialize_block_to_text_buffer(const block& block)
{
*m_raw_archive << block;
}
void BlockchainExport::buffer_serialize_tx(const transaction& tx)
{
*m_raw_archive << tx;
}
void BlockchainExport::buffer_write_num_txs(const std::list<transaction> txs)
{
int n = txs.size();
*m_raw_archive << n;
}
void BlockchainExport::write_block(block& block)
{
serialize_block_to_text_buffer(block);
std::list<transaction> txs;
uint64_t block_height = boost::get<txin_gen>(block.miner_tx.vin.front()).height;
// put coinbase transaction first
transaction coinbase_tx = block.miner_tx;
crypto::hash coinbase_tx_hash = get_transaction_hash(coinbase_tx);
// blockchain_storage:
const transaction* cb_tx_full = m_blockchain_storage->get_tx(coinbase_tx_hash);
//
// BlockchainDB:
// transaction cb_tx_full = m_blockchain_storage->get_tx(coinbase_tx_hash);
// blockchain_storage:
if (cb_tx_full != NULL)
{
txs.push_back(*cb_tx_full);
}
//
// BlockchainDB:
// txs.push_back(cb_tx_full);
// now add all regular transactions
BOOST_FOREACH(const auto& tx_id, block.tx_hashes)
{
#if SOURCE_DB == DB_MEMORY
const transaction* tx = m_blockchain_storage->get_tx(tx_id);
#else
transaction tx = m_blockchain_storage->get_tx(tx_id);
#endif
#if SOURCE_DB == DB_MEMORY
if(tx == NULL)
{
if (! m_tx_pool)
throw std::runtime_error("Aborting: tx == NULL, so memory pool required to get tx, but memory pool isn't enabled");
else
{
transaction tx;
if(m_tx_pool->get_transaction(tx_id, tx))
txs.push_back(tx);
else
throw std::runtime_error("Aborting: tx not found in pool");
}
}
else
txs.push_back(*tx);
#else
txs.push_back(tx);
#endif
}
// serialize all txs to the persistant storage
buffer_write_num_txs(txs);
BOOST_FOREACH(const auto& tx, txs)
{
buffer_serialize_tx(tx);
}
// These three attributes are currently necessary for a fast import that adds blocks without verification.
bool include_extra_block_data = true;
if (include_extra_block_data)
{
size_t block_size = m_blockchain_storage->get_block_size(block_height);
difficulty_type cumulative_difficulty = m_blockchain_storage->get_block_cumulative_difficulty(block_height);
uint64_t coins_generated = m_blockchain_storage->get_block_coins_generated(block_height);
*m_raw_archive << block_size;
*m_raw_archive << cumulative_difficulty;
*m_raw_archive << coins_generated;
}
}
bool BlockchainExport::BlockchainExport::close()
{
if (m_raw_data_file->fail())
return false;
m_raw_data_file->flush();
delete m_raw_archive;
delete m_output_stream;
delete m_raw_data_file;
return true;
}
#if SOURCE_DB == DB_MEMORY
bool BlockchainExport::store_blockchain_raw(blockchain_storage* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_dir, uint64_t use_block_height)
#else
bool BlockchainExport::store_blockchain_raw(BlockchainDB* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_dir, uint64_t use_block_height)
#endif
{
uint64_t use_block_height2 = 0;
m_blockchain_storage = _blockchain_storage;
m_tx_pool = _tx_pool;
LOG_PRINT_L0("Storing blocks raw data...");
if (!BlockchainExport::open(output_dir))
{
LOG_PRINT_RED_L0("failed to open raw file for write");
return false;
}
block b;
LOG_PRINT_L0("source blockchain height: " << m_blockchain_storage->get_current_blockchain_height());
LOG_PRINT_L0("requested block height: " << use_block_height);
if ((use_block_height > 0) && (use_block_height < m_blockchain_storage->get_current_blockchain_height()))
use_block_height2 = use_block_height;
else
{
use_block_height2 = m_blockchain_storage->get_current_blockchain_height();
LOG_PRINT_L0("using block height: " << use_block_height2);
}
for (height=0; height < use_block_height2; ++height)
{
crypto::hash hash = m_blockchain_storage->get_block_id_by_height(height);
m_blockchain_storage->get_block_by_hash(hash, b);
write_block(b);
if (height % NUM_BLOCKS_PER_CHUNK == 0) {
flush_chunk();
}
}
if (height % NUM_BLOCKS_PER_CHUNK != 0)
{
flush_chunk();
}
LOG_PRINT_L0("longest chunk was " << max_chunk << " bytes");
return BlockchainExport::close();
}
int main(int argc, char* argv[])
{
uint32_t log_level = 0;
uint64_t block_height = 0;
std::string import_filename = BLOCKCHAIN_RAW;
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", "", block_height};
const command_line::arg_descriptor<bool> arg_testnet_on = {
"testnet"
, "Run on testnet."
, false
};
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_testnet_on);
command_line::add_arg(desc_cmd_only, command_line::arg_help);
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;
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;
}
log_level = command_line::get_arg(vm, arg_log_level);
block_height = command_line::get_arg(vm, arg_block_height);
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);
bool opt_testnet = command_line::get_arg(vm, arg_testnet_on);
std::string m_config_folder;
auto data_dir_arg = opt_testnet ? command_line::arg_testnet_data_dir : command_line::arg_data_dir;
m_config_folder = command_line::get_arg(vm, data_dir_arg);
boost::filesystem::path output_dir {m_config_folder};
output_dir /= "export";
std::cout << "config directory: " << m_config_folder << ENDL;
// If we wanted to use the memory pool, we would set up a fake_core.
#if SOURCE_DB == DB_MEMORY
// blockchain_storage* core_storage = NULL;
// tx_memory_pool m_mempool(*core_storage); // is this fake anyway? just passing in NULL! so m_mempool can't be used anyway, right?
// core_storage = new blockchain_storage(&m_mempool);
blockchain_storage* core_storage = new blockchain_storage(NULL);
#else
BlockchainDB* core_storage = new BlockchainLMDB();
#endif
// tx_memory_pool m_mempool(core_storage);
LOG_PRINT_L0("Initializing source blockchain storage...");
r = core_storage->init(m_config_folder, opt_testnet);
CHECK_AND_ASSERT_MES(r, false, "Failed to initialize source blockchain storage");
LOG_PRINT_L0("Source blockchain storage initialized OK");
LOG_PRINT_L0("Exporting blockchain raw data...");
BlockchainExport be;
r = be.store_blockchain_raw(core_storage, NULL, output_dir, block_height);
CHECK_AND_ASSERT_MES(r, false, "Failed to export blockchain raw data");
LOG_PRINT_L0("Blockchain raw data exported OK");
}

74
src/blockchain_converter/blockchain_export.h Normal file
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@ -0,0 +1,74 @@
// 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.
#pragma once
#include <boost/archive/binary_oarchive.hpp>
#include <boost/iostreams/stream_buffer.hpp>
#include <boost/iostreams/stream.hpp>
#include <boost/iostreams/device/back_inserter.hpp>
#include "cryptonote_core/cryptonote_basic.h"
#include "cryptonote_core/blockchain_storage.h"
#include "cryptonote_core/blockchain.h"
// TODO:
#include "blockchain_db/blockchain_db.h"
#include "blockchain_db/lmdb/db_lmdb.h"
using namespace cryptonote;
class BlockchainExport
{
public:
bool store_blockchain_raw(cryptonote::blockchain_storage* cs, cryptonote::tx_memory_pool* txp,
boost::filesystem::path& output_dir, uint64_t use_block_height=0);
//
// BlockchainDB:
// bool store_blockchain_raw(cryptonote::BlockchainDB* cs, boost::filesystem::path& output_dir, uint64_t use_block_height=0);
protected:
// blockchain_storage:
blockchain_storage* m_blockchain_storage;
//
// BlockchainDB:
// BlockchainDB* m_blockchain_storage;
tx_memory_pool* m_tx_pool;
typedef std::vector<char> buffer_type;
std::ofstream * m_raw_data_file;
boost::archive::binary_oarchive * m_raw_archive;
buffer_type m_buffer;
boost::iostreams::stream<boost::iostreams::back_insert_device<buffer_type>>* m_output_stream;
// open export file for write
bool open(const boost::filesystem::path& dir_path);
bool close();
void write_block(block& block);
void serialize_block_to_text_buffer(const block& block);
void buffer_serialize_tx(const transaction& tx);
void buffer_write_num_txs(const std::list<transaction> txs);
void flush_chunk();
};