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blockchain_export: Add compile-time support for BlockchainDB

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This allows an LMDB database to be used as the blockchain to export.

Adjust SOURCE_DB in src/blockchain_converter/blockchain_export.h
depending on needs. Defaults to DB_MEMORY.

DB_MEMORY is a sensible default for users migrating to LMDB, as it
allows the exporter to use the in-memory blockchain while the other
binaries work with LMDB, without recompiling anything.
This commit is contained in:
warptangent 2015-03-16 11:57:26 -07:00
parent f6cbfb623b
commit ffadb6571a
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GPG key ID: 0E490BEBFBE4E92D
2 changed files with 65 additions and 33 deletions
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67
src/blockchain_converter/blockchain_export.cpp
View file

@ -45,12 +45,6 @@
#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;
@ -151,21 +145,21 @@ void BlockchainExport::write_block(block& block)
// put coinbase transaction first
transaction coinbase_tx = block.miner_tx;
crypto::hash coinbase_tx_hash = get_transaction_hash(coinbase_tx);
// blockchain_storage:
#if SOURCE_DB == DB_MEMORY
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);
#else
transaction cb_tx_full = m_blockchain_storage->get_db()->get_tx(coinbase_tx_hash);
#endif
// blockchain_storage:
#if SOURCE_DB == DB_MEMORY
if (cb_tx_full != NULL)
{
txs.push_back(*cb_tx_full);
}
//
// BlockchainDB:
// txs.push_back(cb_tx_full);
#else
// TODO: should check and abort if cb_tx_full equals null_hash?
txs.push_back(cb_tx_full);
#endif
// now add all regular transactions
BOOST_FOREACH(const auto& tx_id, block.tx_hashes)
@ -173,7 +167,7 @@ void BlockchainExport::write_block(block& block)
#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);
transaction tx = m_blockchain_storage->get_db()->get_tx(tx_id);
#endif
#if SOURCE_DB == DB_MEMORY
@ -208,9 +202,22 @@ void BlockchainExport::write_block(block& block)
bool include_extra_block_data = true;
if (include_extra_block_data)
{
#if SOURCE_DB == DB_MEMORY
size_t block_size = m_blockchain_storage->get_block_size(block_height);
#else
size_t block_size = m_blockchain_storage->get_db()->get_block_size(block_height);
#endif
#if SOURCE_DB == DB_MEMORY
difficulty_type cumulative_difficulty = m_blockchain_storage->get_block_cumulative_difficulty(block_height);
#else
difficulty_type cumulative_difficulty = m_blockchain_storage->get_db()->get_block_cumulative_difficulty(block_height);
#endif
#if SOURCE_DB == DB_MEMORY
uint64_t coins_generated = m_blockchain_storage->get_block_coins_generated(block_height);
#else
// TODO TEST to verify that this is the equivalent. make sure no off-by-one error with block height vs block number
uint64_t coins_generated = m_blockchain_storage->get_db()->get_block_already_generated_coins(block_height);
#endif
*m_raw_archive << block_size;
*m_raw_archive << cumulative_difficulty;
@ -234,7 +241,7 @@ bool BlockchainExport::BlockchainExport::close()
#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)
bool BlockchainExport::store_blockchain_raw(Blockchain* _blockchain_storage, tx_memory_pool* _tx_pool, boost::filesystem::path& output_dir, uint64_t use_block_height)
#endif
{
uint64_t use_block_height2 = 0;
@ -339,7 +346,7 @@ int main(int argc, char* argv[])
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;
LOG_PRINT_L0("Export directory: " << output_dir.string());
// If we wanted to use the memory pool, we would set up a fake_core.
@ -349,13 +356,25 @@ int main(int argc, char* argv[])
// 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...");
LOG_PRINT_L0("Initializing source blockchain (in-memory database)");
r = core_storage->init(m_config_folder, opt_testnet);
#else
// Use Blockchain instead of lower-level BlockchainDB for two reasons:
// 1. Blockchain has the init() method for easy setup
// 2. exporter needs to use get_current_blockchain_height(), get_block_id_by_height(), get_block_by_hash()
//
// cannot match blockchain_storage setup above with just one line,
// e.g.
// Blockchain* core_storage = new Blockchain(NULL);
// because unlike blockchain_storage constructor, which takes a pointer to
// tx_memory_pool, Blockchain's constructor takes tx_memory_pool object.
LOG_PRINT_L0("Initializing source blockchain (BlockchainDB)");
Blockchain* core_storage = NULL;
tx_memory_pool m_mempool(*core_storage);
core_storage = new Blockchain(m_mempool);
r = core_storage->init(m_config_folder, opt_testnet);
#endif
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...");

29
src/blockchain_converter/blockchain_export.h
View file

@ -35,27 +35,40 @@
#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"
// CONFIG: choose one of the three #define's
//
// DB_MEMORY is a sensible default for users migrating to LMDB, as it allows
// the exporter to use the in-memory blockchain while the other binaries
// work with LMDB, without recompiling anything.
//
#define SOURCE_DB DB_MEMORY
// #define SOURCE_DB DB_LMDB
// to use global compile-time setting (DB_MEMORY or DB_LMDB):
// #define SOURCE_DB BLOCKCHAIN_DB
using namespace cryptonote;
class BlockchainExport
{
public:
#if SOURCE_DB == DB_MEMORY
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);
#else
bool store_blockchain_raw(cryptonote::Blockchain* cs, cryptonote::tx_memory_pool* txp,
boost::filesystem::path& output_dir, uint64_t use_block_height=0);
#endif
protected:
// blockchain_storage:
#if SOURCE_DB == DB_MEMORY
blockchain_storage* m_blockchain_storage;
//
// BlockchainDB:
// BlockchainDB* m_blockchain_storage;
#else
Blockchain* m_blockchain_storage;
#endif
tx_memory_pool* m_tx_pool;
typedef std::vector<char> buffer_type;
std::ofstream * m_raw_data_file;