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danicoin/src/blockchain_db/berkeleydb/db_bdb.cpp
Thomas Winget 7b14d4a17f
Steps toward multiple dbs available -- working 
There will need to be some more refactoring for these changes to be
considered complete/correct, but for now it's working.

new daemon cli argument "--db-type", works for LMDB and BerkeleyDB.

A good deal of refactoring is also present in this commit, namely
Blockchain no longer instantiates BlockchainDB, but rather is passed a
pointer to an already-instantiated BlockchainDB on init().
2015-03-25 12:09:44 -04:00

1690 lines
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// Copyright (c) 2014, 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 "db_bdb.h"
#include <boost/filesystem.hpp>
#include <memory> // std::unique_ptr
#include <cstring> // memcpy
#include "cryptonote_core/cryptonote_format_utils.h"
#include "crypto/crypto.h"
#include "profile_tools.h"
using epee::string_tools::pod_to_hex;
namespace
{
template <typename T>
inline void throw0(const T &e)
{
LOG_PRINT_L0(e.what());
throw e;
}
template <typename T>
inline void throw1(const T &e)
{
LOG_PRINT_L1(e.what());
throw e;
}
// cursor needs to be closed when it goes out of scope,
// this helps if the function using it throws
struct bdb_cur
{
bdb_cur(DbTxn* txn, Db* dbi)
{
if (dbi->cursor(txn, &m_cur, 0))
throw0(cryptonote::DB_ERROR("Error opening db cursor"));
done = false;
}
~bdb_cur() { close(); }
operator Dbc*() { return m_cur; }
operator Dbc**() { return &m_cur; }
Dbc* operator->() { return m_cur; }
void close()
{
if (!done)
{
m_cur->close();
done = true;
}
}
private:
Dbc* m_cur;
bool done;
};
const char* const BDB_BLOCKS = "blocks";
const char* const BDB_BLOCK_TIMESTAMPS = "block_timestamps";
const char* const BDB_BLOCK_HEIGHTS = "block_heights";
const char* const BDB_BLOCK_HASHES = "block_hashes";
const char* const BDB_BLOCK_SIZES = "block_sizes";
const char* const BDB_BLOCK_DIFFS = "block_diffs";
const char* const BDB_BLOCK_COINS = "block_coins";
const char* const BDB_TXS = "txs";
const char* const BDB_TX_UNLOCKS = "tx_unlocks";
const char* const BDB_TX_HEIGHTS = "tx_heights";
const char* const BDB_TX_OUTPUTS = "tx_outputs";
const char* const BDB_OUTPUT_TXS = "output_txs";
const char* const BDB_OUTPUT_INDICES = "output_indices";
const char* const BDB_OUTPUT_AMOUNTS = "output_amounts";
const char* const BDB_OUTPUT_KEYS = "output_keys";
const char* const BDB_SPENT_KEYS = "spent_keys";
template<typename T>
struct Dbt_copy: public Dbt
{
Dbt_copy(const T &t): t_copy(t)
{
init();
}
Dbt_copy()
{
init();
}
void init()
{
set_data(&t_copy);
set_size(sizeof(T));
set_ulen(sizeof(T));
set_flags(DB_DBT_USERMEM);
}
operator T()
{
return t_copy;
}
private:
T t_copy;
};
template<>
struct Dbt_copy<cryptonote::blobdata>: public Dbt
{
Dbt_copy(const cryptonote::blobdata &bd) : m_data(new char[bd.size()])
{
memcpy(m_data.get(), bd.data(), bd.size());
set_data(m_data.get());
set_size(bd.size());
set_ulen(bd.size());
set_flags(DB_DBT_USERMEM);
}
private:
std::unique_ptr<char[]> m_data;
};
struct Dbt_safe : public Dbt
{
Dbt_safe()
{
set_data(NULL);
set_flags(DB_DBT_MALLOC);
}
~Dbt_safe()
{
void* buf = get_data();
if (buf != NULL)
{
free(buf);
}
}
};
} // anonymous namespace
namespace cryptonote
{
void BlockchainBDB::add_block( const block& blk
, const size_t& block_size
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, const crypto::hash& blk_hash
)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<crypto::hash> val_h(blk_hash);
if (m_block_heights->exists(*m_write_txn, &val_h, 0) == 0)
throw1(BLOCK_EXISTS("Attempting to add block that's already in the db"));
if (m_height > 0)
{
Dbt_copy<crypto::hash> parent_key(blk.prev_id);
Dbt_copy<uint32_t> parent_h;
if (m_block_heights->get(*m_write_txn, &parent_key, &parent_h, 0))
{
LOG_PRINT_L3("m_height: " << m_height);
LOG_PRINT_L3("parent_key: " << blk.prev_id);
throw0(DB_ERROR("Failed to get top block hash to check for new block's parent"));
}
uint32_t parent_height = parent_h;
if (parent_height != m_height)
throw0(BLOCK_PARENT_DNE("Top block is not new block's parent"));
}
Dbt_copy<uint32_t> key(m_height + 1);
Dbt_copy<blobdata> blob(block_to_blob(blk));
auto res = m_blocks->put(*m_write_txn, &key, &blob, 0);
if (res)
throw0(DB_ERROR("Failed to add block blob to db transaction."));
Dbt_copy<size_t> sz(block_size);
if (m_block_sizes->put(*m_write_txn, &key, &sz, 0))
throw0(DB_ERROR("Failed to add block size to db transaction."));
Dbt_copy<uint64_t> ts(blk.timestamp);
if (m_block_timestamps->put(*m_write_txn, &key, &ts, 0))
throw0(DB_ERROR("Failed to add block timestamp to db transaction."));
Dbt_copy<difficulty_type> diff(cumulative_difficulty);
if (m_block_diffs->put(*m_write_txn, &key, &diff, 0))
throw0(DB_ERROR("Failed to add block cumulative difficulty to db transaction."));
Dbt_copy<uint64_t> coinsgen(coins_generated);
if (m_block_coins->put(*m_write_txn, &key, &coinsgen, 0))
throw0(DB_ERROR("Failed to add block total generated coins to db transaction."));
if (m_block_heights->put(*m_write_txn, &val_h, &key, 0))
throw0(DB_ERROR("Failed to add block height by hash to db transaction."));
if (m_block_hashes->put(*m_write_txn, &key, &val_h, 0))
throw0(DB_ERROR("Failed to add block hash to db transaction."));
}
void BlockchainBDB::remove_block()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
if (m_height == 0)
throw0(BLOCK_DNE ("Attempting to remove block from an empty blockchain"));
Dbt_copy<uint32_t> k(m_height);
Dbt_copy<crypto::hash> h;
if (m_block_hashes->get(*m_write_txn, &k, &h, 0))
throw1(BLOCK_DNE("Attempting to remove block that's not in the db"));
if (m_blocks->del(*m_write_txn, &k, 0))
throw1(DB_ERROR("Failed to add removal of block to db transaction"));
if (m_block_sizes->del(*m_write_txn, &k, 0))
throw1(DB_ERROR("Failed to add removal of block size to db transaction"));
if (m_block_diffs->del(*m_write_txn, &k, 0))
throw1(DB_ERROR("Failed to add removal of block cumulative difficulty to db transaction"));
if (m_block_coins->del(*m_write_txn, &k, 0))
throw1(DB_ERROR("Failed to add removal of block total generated coins to db transaction"));
if (m_block_timestamps->del(*m_write_txn, &k, 0))
throw1(DB_ERROR("Failed to add removal of block timestamp to db transaction"));
if (m_block_heights->del(*m_write_txn, &h, 0))
throw1(DB_ERROR("Failed to add removal of block height by hash to db transaction"));
if (m_block_hashes->del(*m_write_txn, &k, 0))
throw1(DB_ERROR("Failed to add removal of block hash to db transaction"));
}
void BlockchainBDB::add_transaction_data(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash& tx_hash)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<crypto::hash> val_h(tx_hash);
if (m_txs->exists(*m_write_txn, &val_h, 0) == 0)
throw1(TX_EXISTS("Attempting to add transaction that's already in the db"));
Dbt_copy<blobdata> blob(tx_to_blob(tx));
if (m_txs->put(*m_write_txn, &val_h, &blob, 0))
throw0(DB_ERROR("Failed to add tx blob to db transaction"));
Dbt_copy<uint64_t> height(m_height + 1);
if (m_tx_heights->put(*m_write_txn, &val_h, &height, 0))
throw0(DB_ERROR("Failed to add tx block height to db transaction"));
Dbt_copy<uint64_t> unlock_time(tx.unlock_time);
if (m_tx_unlocks->put(*m_write_txn, &val_h, &unlock_time, 0))
throw0(DB_ERROR("Failed to add tx unlock time to db transaction"));
}
void BlockchainBDB::remove_transaction_data(const crypto::hash& tx_hash, const transaction& tx)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<crypto::hash> val_h(tx_hash);
if (m_txs->exists(*m_write_txn, &val_h, 0))
throw1(TX_DNE("Attempting to remove transaction that isn't in the db"));
if (m_txs->del(*m_write_txn, &val_h, 0))
throw1(DB_ERROR("Failed to add removal of tx to db transaction"));
if (m_tx_unlocks->del(*m_write_txn, &val_h, 0))
throw1(DB_ERROR("Failed to add removal of tx unlock time to db transaction"));
if (m_tx_heights->del(*m_write_txn, &val_h, 0))
throw1(DB_ERROR("Failed to add removal of tx block height to db transaction"));
remove_tx_outputs(tx_hash, tx);
if (m_tx_outputs->del(*m_write_txn, &val_h, 0))
throw1(DB_ERROR("Failed to add removal of tx outputs to db transaction"));
}
void BlockchainBDB::add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<uint32_t> k(m_num_outputs + 1);
Dbt_copy<crypto::hash> v(tx_hash);
if (m_output_txs->put(*m_write_txn, &k, &v, 0))
throw0(DB_ERROR("Failed to add output tx hash to db transaction"));
if (m_tx_outputs->put(*m_write_txn, &v, &k, 0))
throw0(DB_ERROR("Failed to add tx output index to db transaction"));
Dbt_copy<uint64_t> val_local_index(local_index);
if (m_output_indices->put(*m_write_txn, &k, &val_local_index, 0))
throw0(DB_ERROR("Failed to add tx output index to db transaction"));
Dbt_copy<uint64_t> val_amount(tx_output.amount);
if (m_output_amounts->put(*m_write_txn, &val_amount, &k, 0))
throw0(DB_ERROR("Failed to add output amount to db transaction."));
if (tx_output.target.type() == typeid(txout_to_key))
{
Dbt_copy<crypto::public_key> val_pubkey(boost::get<txout_to_key>(tx_output.target).key);
if (m_output_keys->put(*m_write_txn, &k, &val_pubkey, 0))
throw0(DB_ERROR("Failed to add output pubkey to db transaction"));
}
m_num_outputs++;
}
void BlockchainBDB::remove_tx_outputs(const crypto::hash& tx_hash, const transaction& tx)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
bdb_cur cur(*m_write_txn, m_tx_outputs);
Dbt_copy<crypto::hash> k(tx_hash);
Dbt_copy<uint32_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
{
throw0(DB_ERROR("Attempting to remove a tx's outputs, but none found."));
}
else if (result)
{
throw0(DB_ERROR("DB error attempting to get an output"));
}
else
{
db_recno_t num_elems = 0;
cur->count(&num_elems, 0);
for (uint64_t i = 0; i < num_elems; ++i)
{
const tx_out tx_output = tx.vout[i];
remove_output(v, tx_output.amount);
if (i < num_elems - 1)
{
cur->get(&k, &v, DB_NEXT_DUP);
}
}
}
cur.close();
}
// TODO: probably remove this function
void BlockchainBDB::remove_output(const tx_out& tx_output)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__ << " (unused version - does nothing)");
return;
}
void BlockchainBDB::remove_output(const uint64_t& out_index, const uint64_t amount)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<uint32_t> k(out_index);
auto result = m_output_indices->del(*m_write_txn, &k, 0);
if (result == DB_NOTFOUND)
{
LOG_PRINT_L0("Unexpected: global output index not found in m_output_indices");
}
else if (result)
{
throw1(DB_ERROR("Error adding removal of output tx index to db transaction"));
}
result = m_output_txs->del(*m_write_txn, &k, 0);
// if (result != 0 && result != DB_NOTFOUND)
// throw1(DB_ERROR("Error adding removal of output tx hash to db transaction"));
if (result == DB_NOTFOUND)
{
LOG_PRINT_L0("Unexpected: global output index not found in m_output_txs");
}
else if (result)
{
throw1(DB_ERROR("Error adding removal of output tx hash to db transaction"));
}
result = m_output_keys->del(*m_write_txn, &k, 0);
if (result == DB_NOTFOUND)
{
LOG_PRINT_L0("Unexpected: global output index not found in m_output_keys");
}
else if (result)
throw1(DB_ERROR("Error adding removal of output pubkey to db transaction"));
remove_amount_output_index(amount, out_index);
m_num_outputs--;
}
void BlockchainBDB::remove_amount_output_index(const uint64_t amount, const uint64_t global_output_index)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_cur cur(*m_write_txn, m_output_amounts);
Dbt_copy<uint64_t> k(amount);
Dbt_copy<uint32_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but amount not found"));
else if (result)
throw0(DB_ERROR("DB error attempting to get an output"));
db_recno_t num_elems = 0;
cur->count(&num_elems, 0);
uint64_t amount_output_index = 0;
uint64_t goi = 0;
bool found_index = false;
for (uint64_t i = 0; i < num_elems; ++i)
{
goi = v;
if (goi == global_output_index)
{
amount_output_index = i;
found_index = true;
break;
}
cur->get(&k, &v, DB_NEXT_DUP);
}
if (found_index)
{
// found the amount output index
// now delete it
result = cur->del(0);
if (result)
throw0(DB_ERROR(std::string("Error deleting amount output index ").append(boost::lexical_cast<std::string>(amount_output_index)).c_str()));
}
else
{
// not found
throw1(OUTPUT_DNE("Failed to find amount output index"));
}
cur.close();
}
void BlockchainBDB::add_spent_key(const crypto::key_image& k_image)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<crypto::key_image> val_key(k_image);
if (m_spent_keys->exists(*m_write_txn, &val_key, 0) == 0)
throw1(KEY_IMAGE_EXISTS("Attempting to add spent key image that's already in the db"));
Dbt_copy<char> val('\0');
if (m_spent_keys->put(*m_write_txn, &val_key, &val, 0))
throw1(DB_ERROR("Error adding spent key image to db transaction."));
}
void BlockchainBDB::remove_spent_key(const crypto::key_image& k_image)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
Dbt_copy<crypto::key_image> k(k_image);
auto result = m_spent_keys->del(*m_write_txn, &k, 0);
if (result != 0 && result != DB_NOTFOUND)
throw1(DB_ERROR("Error adding removal of key image to db transaction"));
}
blobdata BlockchainBDB::output_to_blob(const tx_out& output)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
blobdata b;
if (!t_serializable_object_to_blob(output, b))
throw1(DB_ERROR("Error serializing output to blob"));
return b;
}
tx_out BlockchainBDB::output_from_blob(const blobdata& blob) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
std::stringstream ss;
ss << blob;
binary_archive<false> ba(ss);
tx_out o;
if (!(::serialization::serialize(ba, o)))
throw1(DB_ERROR("Error deserializing tx output blob"));
return o;
}
uint64_t BlockchainBDB::get_output_global_index(const uint64_t& amount, const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
bdb_cur cur(txn, m_output_amounts);
Dbt_copy<uint64_t> k(amount);
Dbt_copy<uint32_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but amount not found"));
else if (result)
throw0(DB_ERROR("DB error attempting to get an output"));
db_recno_t num_elems;
cur->count(&num_elems, 0);
if (num_elems <= index)
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but output not found"));
for (uint64_t i = 0; i < index; ++i)
{
cur->get(&k, &v, DB_NEXT_DUP);
}
uint64_t glob_index = v;
cur.close();
txn.commit();
return glob_index;
}
void BlockchainBDB::check_open() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
if (!m_open)
throw0(DB_ERROR("DB operation attempted on a not-open DB instance"));
}
BlockchainBDB::~BlockchainBDB()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
if (m_open)
{
close();
}
}
BlockchainBDB::BlockchainBDB(bool batch_transactions)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
// initialize folder to something "safe" just in case
// someone accidentally misuses this class...
m_folder = "thishsouldnotexistbecauseitisgibberish";
m_open = false;
m_batch_transactions = batch_transactions;
m_write_txn = nullptr;
m_height = 0;
}
void BlockchainBDB::open(const std::string& filename, const int db_flags)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
if (m_open)
throw0(DB_OPEN_FAILURE("Attempted to open db, but it's already open"));
boost::filesystem::path direc(filename);
if (boost::filesystem::exists(direc))
{
if (!boost::filesystem::is_directory(direc))
throw0(DB_OPEN_FAILURE("DB needs a directory path, but a file was passed"));
}
else
{
if (!boost::filesystem::create_directory(direc))
throw0(DB_OPEN_FAILURE(std::string("Failed to create directory ").append(filename).c_str()));
}
m_folder = filename;
try
{
//Create BerkeleyDB environment
m_env = new DbEnv(0); // no flags needed for DbEnv
uint32_t db_env_open_flags = DB_CREATE | DB_INIT_MPOOL | DB_INIT_LOCK
| DB_INIT_LOG | DB_INIT_TXN | DB_RECOVER
| DB_THREAD;
// last parameter left 0, files will be created with default rw access
m_env->open(filename.c_str(), db_env_open_flags, 0);
// begin transaction to init dbs
bdb_txn_safe txn;
m_env->txn_begin(NULL, txn, 0);
// create Dbs in the environment
m_blocks = new Db(m_env, 0);
m_block_heights = new Db(m_env, 0);
m_block_hashes = new Db(m_env, 0);
m_block_timestamps = new Db(m_env, 0);
m_block_sizes = new Db(m_env, 0);
m_block_diffs = new Db(m_env, 0);
m_block_coins = new Db(m_env, 0);
m_txs = new Db(m_env, 0);
m_tx_unlocks = new Db(m_env, 0);
m_tx_heights = new Db(m_env, 0);
m_tx_outputs = new Db(m_env, 0);
m_output_txs = new Db(m_env, 0);
m_output_indices = new Db(m_env, 0);
m_output_amounts = new Db(m_env, 0);
m_output_keys = new Db(m_env, 0);
m_spent_keys = new Db(m_env, 0);
// Tell DB about Dbs that need duplicate support
// Note: no need to tell about sorting,
// as the default is insertion order, which we want
m_tx_outputs->set_flags(DB_DUP);
m_output_amounts->set_flags(DB_DUP);
// Tell DB about fixed-size values.
m_block_hashes->set_re_len(sizeof(crypto::hash));
m_block_timestamps->set_re_len(sizeof(uint64_t));
m_block_sizes->set_re_len(sizeof(size_t)); // should really store block size as uint64_t...
m_block_diffs->set_re_len(sizeof(difficulty_type));
m_block_coins->set_re_len(sizeof(uint64_t));
m_output_txs->set_re_len(sizeof(crypto::hash));
m_output_indices->set_re_len(sizeof(uint64_t));
m_output_keys->set_re_len(sizeof(crypto::public_key));
//TODO: Find out if we need to do Db::set_flags(DB_RENUMBER)
// for the RECNO databases. We shouldn't as we're only
// inserting/removing from the end, but we'll see.
// open Dbs in the environment
// m_tx_outputs and m_output_amounts must be DB_HASH or DB_BTREE
// because they need duplicate entry support. The rest are DB_RECNO,
// as it seems that will be the most performant choice.
m_blocks->open(txn, BDB_BLOCKS, NULL, DB_RECNO, DB_CREATE, 0);
m_block_timestamps->open(txn, BDB_BLOCK_TIMESTAMPS, NULL, DB_RECNO, DB_CREATE, 0);
m_block_heights->open(txn, BDB_BLOCK_HEIGHTS, NULL, DB_HASH, DB_CREATE, 0);
m_block_hashes->open(txn, BDB_BLOCK_HASHES, NULL, DB_RECNO, DB_CREATE, 0);
m_block_sizes->open(txn, BDB_BLOCK_SIZES, NULL, DB_RECNO, DB_CREATE, 0);
m_block_diffs->open(txn, BDB_BLOCK_DIFFS, NULL, DB_RECNO, DB_CREATE, 0);
m_block_coins->open(txn, BDB_BLOCK_COINS, NULL, DB_RECNO, DB_CREATE, 0);
m_txs->open(txn, BDB_TXS, NULL, DB_HASH, DB_CREATE, 0);
m_tx_unlocks->open(txn, BDB_TX_UNLOCKS, NULL, DB_HASH, DB_CREATE, 0);
m_tx_heights->open(txn, BDB_TX_HEIGHTS, NULL, DB_HASH, DB_CREATE, 0);
m_tx_outputs->open(txn, BDB_TX_OUTPUTS, NULL, DB_HASH, DB_CREATE, 0);
m_output_txs->open(txn, BDB_OUTPUT_TXS, NULL, DB_RECNO, DB_CREATE, 0);
m_output_indices->open(txn, BDB_OUTPUT_INDICES, NULL, DB_RECNO, DB_CREATE, 0);
m_output_amounts->open(txn, BDB_OUTPUT_AMOUNTS, NULL, DB_HASH, DB_CREATE, 0);
m_output_keys->open(txn, BDB_OUTPUT_KEYS, NULL, DB_RECNO, DB_CREATE, 0);
m_spent_keys->open(txn, BDB_SPENT_KEYS, NULL, DB_HASH, DB_CREATE, 0);
DB_BTREE_STAT* stats;
// DB_FAST_STAT can apparently cause an incorrect number of records
// to be returned. The flag should be set to 0 instead if this proves
// to be the case.
m_blocks->stat(txn, &stats, DB_FAST_STAT);
m_height = stats->bt_nkeys;
delete stats;
// see above comment about DB_FAST_STAT
m_output_indices->stat(txn, &stats, DB_FAST_STAT);
m_num_outputs = stats->bt_nkeys;
delete stats;
txn.commit();
}
catch (const std::exception& e)
{
throw0(DB_OPEN_FAILURE(e.what()));
}
m_open = true;
}
void BlockchainBDB::close()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
this->sync();
// FIXME: not yet thread safe!!! Use with care.
m_open = false;
m_env->close(DB_FORCESYNC);
}
void BlockchainBDB::sync()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
try
{
m_blocks->sync(0);
m_block_heights->sync(0);
m_block_hashes->sync(0);
m_block_timestamps->sync(0);
m_block_sizes->sync(0);
m_block_diffs->sync(0);
m_block_coins->sync(0);
m_txs->sync(0);
m_tx_unlocks->sync(0);
m_tx_heights->sync(0);
m_tx_outputs->sync(0);
m_output_txs->sync(0);
m_output_indices->sync(0);
m_output_amounts->sync(0);
m_output_keys->sync(0);
m_spent_keys->sync(0);
}
catch (const std::exception& e)
{
throw0(DB_ERROR(std::string("Failed to sync database: ").append(e.what()).c_str()));
}
}
void BlockchainBDB::reset()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
// TODO: this
}
std::vector<std::string> BlockchainBDB::get_filenames() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
std::vector<std::string> filenames;
char *fname, *dbname;
const char **pfname, **pdbname;
pfname = (const char **)&fname;
pdbname = (const char **)&dbname;
m_blocks->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_block_heights->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_block_hashes->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_block_timestamps->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_block_sizes->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_block_diffs->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_block_coins->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_txs->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_tx_unlocks->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_tx_heights->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_tx_outputs->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_output_txs->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_output_indices->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_output_amounts->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_output_keys->get_dbname(pfname, pdbname);
filenames.push_back(fname);
m_spent_keys->get_dbname(pfname, pdbname);
filenames.push_back(fname);
std::vector<std::string> full_paths;
for (auto& filename : filenames)
{
boost::filesystem::path p(m_folder);
p /= filename;
full_paths.push_back(p.string());
}
return full_paths;
}
std::string BlockchainBDB::get_db_name() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
return std::string("BerkeleyDB");
}
// TODO: this?
bool BlockchainBDB::lock()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
return false;
}
// TODO: this?
void BlockchainBDB::unlock()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
}
bool BlockchainBDB::block_exists(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::hash> key(h);
auto get_result = m_block_heights->exists(txn, &key, 0);
if (get_result == DB_NOTFOUND)
{
txn.commit();
LOG_PRINT_L3("Block with hash " << epee::string_tools::pod_to_hex(h) << " not found in db");
return false;
}
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch block index from hash"));
txn.commit();
return true;
}
block BlockchainBDB::get_block(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
return get_block_from_height(get_block_height(h));
}
uint64_t BlockchainBDB::get_block_height(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::hash> key(h);
Dbt_copy<uint64_t> result;
auto get_result = m_block_heights->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
throw1(BLOCK_DNE("Attempted to retrieve non-existent block height"));
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a block height from the db"));
txn.commit();
return (uint64_t)result - 1;
}
block_header BlockchainBDB::get_block_header(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
// block_header object is automatically cast from block object
return get_block(h);
}
block BlockchainBDB::get_block_from_height(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> key(height + 1);
Dbt_safe result;
auto get_result = m_blocks->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw0(DB_ERROR(std::string("Attempt to get block from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- block not in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a block from the db"));
txn.commit();
blobdata bd;
bd.assign(reinterpret_cast<char*>(result.get_data()), result.get_size());
block b;
if (!parse_and_validate_block_from_blob(bd, b))
throw0(DB_ERROR("Failed to parse block from blob retrieved from the db"));
return b;
}
uint64_t BlockchainBDB::get_block_timestamp(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> key(height + 1);
Dbt_copy<uint64_t> result;
auto get_result = m_block_timestamps->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw0(DB_ERROR(std::string("Attempt to get timestamp from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- timestamp not in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a timestamp from the db"));
txn.commit();
return result;
}
uint64_t BlockchainBDB::get_top_block_timestamp() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
// if no blocks, return 0
if (m_height == 0)
{
return 0;
}
return get_block_timestamp(m_height - 1);
}
size_t BlockchainBDB::get_block_size(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> key(height + 1);
Dbt_copy<size_t> result;
auto get_result = m_block_sizes->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw0(DB_ERROR(std::string("Attempt to get block size from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- block size not in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a block size from the db"));
txn.commit();
return result;
}
difficulty_type BlockchainBDB::get_block_cumulative_difficulty(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__ << " height: " << height);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> key(height + 1);
Dbt_copy<difficulty_type> result;
auto get_result = m_block_diffs->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw0(DB_ERROR(std::string("Attempt to get cumulative difficulty from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- difficulty not in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a cumulative difficulty from the db"));
txn.commit();
return result;
}
difficulty_type BlockchainBDB::get_block_difficulty(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
difficulty_type diff1 = 0;
difficulty_type diff2 = 0;
diff1 = get_block_cumulative_difficulty(height);
if (height != 0)
{
diff2 = get_block_cumulative_difficulty(height - 1);
}
return diff1 - diff2;
}
uint64_t BlockchainBDB::get_block_already_generated_coins(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> key(height + 1);
Dbt_copy<uint64_t> result;
auto get_result = m_block_coins->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw0(DB_ERROR(std::string("Attempt to get generated coins from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- block size not in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a total generated coins from the db"));
txn.commit();
return result;
}
crypto::hash BlockchainBDB::get_block_hash_from_height(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> key(height + 1);
Dbt_copy<crypto::hash> result;
auto get_result = m_block_hashes->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw0(BLOCK_DNE(std::string("Attempt to get hash from height ").append(boost::lexical_cast<std::string>(height)).append(" failed -- hash not in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve a block hash from the db."));
txn.commit();
return result;
}
std::vector<block> BlockchainBDB::get_blocks_range(const uint64_t& h1, const uint64_t& h2) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
std::vector<block> v;
for (uint64_t height = h1; height <= h2; ++height)
{
v.push_back(get_block_from_height(height));
}
return v;
}
std::vector<crypto::hash> BlockchainBDB::get_hashes_range(const uint64_t& h1, const uint64_t& h2) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
std::vector<crypto::hash> v;
for (uint64_t height = h1; height <= h2; ++height)
{
v.push_back(get_block_hash_from_height(height));
}
return v;
}
crypto::hash BlockchainBDB::top_block_hash() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
if (m_height > 0)
{
return get_block_hash_from_height(m_height - 1);
}
return null_hash;
}
block BlockchainBDB::get_top_block() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
if (m_height > 0)
{
return get_block_from_height(m_height - 1);
}
block b;
return b;
}
uint64_t BlockchainBDB::height() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
return m_height;
}
bool BlockchainBDB::tx_exists(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::hash> key(h);
TIME_MEASURE_START(time1);
auto get_result = m_txs->exists(txn, &key, 0);
TIME_MEASURE_FINISH(time1);
time_tx_exists += time1;
if (get_result == DB_NOTFOUND)
{
txn.commit();
LOG_PRINT_L1("transaction with hash " << epee::string_tools::pod_to_hex(h) << " not found in db");
return false;
}
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch transaction from hash"));
return true;
}
uint64_t BlockchainBDB::get_tx_unlock_time(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::hash> key(h);
Dbt_copy<uint64_t> result;
auto get_result = m_tx_unlocks->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
throw1(TX_DNE(std::string("tx unlock time with hash ").append(epee::string_tools::pod_to_hex(h)).append(" not found in db").c_str()));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch tx unlock time from hash"));
return result;
}
transaction BlockchainBDB::get_tx(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::hash> key(h);
Dbt_safe result;
auto get_result = m_txs->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
throw1(TX_DNE(std::string("tx with hash ").append(epee::string_tools::pod_to_hex(h)).append(" not found in db").c_str()));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch tx from hash"));
blobdata bd;
bd.assign(reinterpret_cast<char*>(result.get_data()), result.get_size());
transaction tx;
if (!parse_and_validate_tx_from_blob(bd, tx))
throw0(DB_ERROR("Failed to parse tx from blob retrieved from the db"));
txn.commit();
return tx;
}
uint64_t BlockchainBDB::get_tx_count() const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
DB_BTREE_STAT* stats;
// DB_FAST_STAT can apparently cause an incorrect number of records
// to be returned. The flag should be set to 0 instead if this proves
// to be the case.
m_txs->stat(txn, &stats, DB_FAST_STAT);
auto num_txs = stats->bt_nkeys;
delete stats;
txn.commit();
return num_txs;
}
std::vector<transaction> BlockchainBDB::get_tx_list(const std::vector<crypto::hash>& hlist) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
std::vector<transaction> v;
for (auto& h : hlist)
{
v.push_back(get_tx(h));
}
return v;
}
uint64_t BlockchainBDB::get_tx_block_height(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::hash> key(h);
Dbt_copy<uint64_t> result;
auto get_result = m_tx_heights->get(txn, &key, &result, 0);
if (get_result == DB_NOTFOUND)
{
throw1(TX_DNE(std::string("tx height with hash ").append(epee::string_tools::pod_to_hex(h)).append(" not found in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch tx height from hash"));
txn.commit();
return (uint64_t)result - 1;
}
//FIXME: make sure the random method used here is appropriate
uint64_t BlockchainBDB::get_random_output(const uint64_t& amount) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
uint64_t num_outputs = get_num_outputs(amount);
if (num_outputs == 0)
throw1(OUTPUT_DNE("Attempting to get a random output for an amount, but none exist"));
return crypto::rand<uint64_t>() % num_outputs;
}
uint64_t BlockchainBDB::get_num_outputs(const uint64_t& amount) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
bdb_cur cur(txn, m_output_amounts);
Dbt_copy<uint64_t> k(amount);
Dbt_copy<uint64_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
{
return 0;
}
else if (result)
throw0(DB_ERROR("DB error attempting to get number of outputs of an amount"));
db_recno_t num_elems = 0;
cur->count(&num_elems, 0);
txn.commit();
return num_elems;
}
crypto::public_key BlockchainBDB::get_output_key(const uint64_t& amount, const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
uint64_t glob_index = get_output_global_index(amount, index);
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> k(glob_index);
Dbt_copy<crypto::public_key> v;
auto get_result = m_output_keys->get(txn, &k, &v, 0);
if (get_result == DB_NOTFOUND)
throw0(DB_ERROR("Attempting to get output pubkey by global index, but key does not exist"));
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db"));
return v;
}
// As this is not used, its return is now a blank output.
// This will save on space in the db.
tx_out BlockchainBDB::get_output(const crypto::hash& h, const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
return tx_out();
}
// As this is not used, its return is now a blank output.
// This will save on space in the db.
tx_out BlockchainBDB::get_output(const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
return tx_out();
}
tx_out_index BlockchainBDB::get_output_tx_and_index_from_global(const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<uint32_t> k(index);
Dbt_copy<crypto::hash > v;
auto get_result = m_output_txs->get(txn, &k, &v, 0);
if (get_result == DB_NOTFOUND)
throw1(OUTPUT_DNE("output with given index not in db"));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch output tx hash"));
crypto::hash tx_hash = v;
Dbt_copy<uint64_t> result;
get_result = m_output_indices->get(txn, &k, &result, 0);
if (get_result == DB_NOTFOUND)
throw1(OUTPUT_DNE("output with given index not in db"));
else if (get_result)
throw0(DB_ERROR("DB error attempting to fetch output tx index"));
txn.commit();
return tx_out_index(tx_hash, result);
}
tx_out_index BlockchainBDB::get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
bdb_cur cur(txn, m_output_amounts);
Dbt_copy<uint64_t> k(amount);
Dbt_copy<uint64_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but amount not found"));
else if (result)
throw0(DB_ERROR("DB error attempting to get an output"));
db_recno_t num_elems = 0;
cur->count(&num_elems, 0);
if (num_elems <= index)
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but output not found"));
for (uint64_t i = 0; i < index; ++i)
{
cur->get(&k, &v, DB_NEXT_DUP);
}
uint64_t glob_index = v;
cur.close();
txn.commit();
return get_output_tx_and_index_from_global(glob_index);
}
std::vector<uint64_t> BlockchainBDB::get_tx_output_indices(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
std::vector<uint64_t> index_vec;
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
bdb_cur cur(txn, m_tx_outputs);
Dbt_copy<crypto::hash> k(h);
Dbt_copy<uint64_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get an output by tx hash and tx index, but output not found"));
else if (result)
throw0(DB_ERROR("DB error attempting to get an output"));
db_recno_t num_elems = 0;
cur->count(&num_elems, 0);
for (uint64_t i = 0; i < num_elems; ++i)
{
index_vec.push_back(v);
cur->get(&k, &v, DB_NEXT_DUP);
}
cur.close();
txn.commit();
return index_vec;
}
std::vector<uint64_t> BlockchainBDB::get_tx_amount_output_indices(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
std::vector<uint64_t> index_vec;
std::vector<uint64_t> index_vec2;
// get the transaction's global output indices first
index_vec = get_tx_output_indices(h);
// these are next used to obtain the amount output indices
transaction tx = get_tx(h);
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
uint64_t i = 0;
uint64_t global_index;
for (const auto& vout : tx.vout)
{
uint64_t amount = vout.amount;
global_index = index_vec[i];
bdb_cur cur(txn, m_output_amounts);
Dbt_copy<uint64_t> k(amount);
Dbt_copy<uint64_t> v;
auto result = cur->get(&k, &v, DB_SET);
if (result == DB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but amount not found"));
else if (result)
throw0(DB_ERROR("DB error attempting to get an output"));
db_recno_t num_elems = 0;
cur->count(&num_elems, 0);
uint64_t amount_output_index = 0;
uint64_t output_index = 0;
bool found_index = false;
for (uint64_t j = 0; j < num_elems; ++j)
{
output_index = v;
if (output_index == global_index)
{
amount_output_index = j;
found_index = true;
break;
}
cur->get(&k, &v, DB_NEXT_DUP);
}
if (found_index)
{
index_vec2.push_back(amount_output_index);
}
else
{
// not found
cur.close();
txn.commit();
throw1(OUTPUT_DNE("specified output not found in db"));
}
cur.close();
++i;
}
txn.commit();
return index_vec2;
}
bool BlockchainBDB::has_key_image(const crypto::key_image& img) const
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
Dbt_copy<crypto::key_image> val_key(img);
if (m_spent_keys->exists(txn, &val_key, 0) == 0)
{
txn.commit();
return true;
}
txn.commit();
return false;
}
// Ostensibly BerkeleyDB has batch transaction support built-in,
// so the following few functions will be NOP.
void BlockchainBDB::batch_start()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
}
void BlockchainBDB::batch_commit()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
}
void BlockchainBDB::batch_stop()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
}
void BlockchainBDB::batch_abort()
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
}
void BlockchainBDB::set_batch_transactions(bool batch_transactions)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
m_batch_transactions = batch_transactions;
LOG_PRINT_L3("batch transactions " << (m_batch_transactions ? "enabled" : "disabled"));
}
uint64_t BlockchainBDB::add_block( const block& blk
, const size_t& block_size
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
, const std::vector<transaction>& txs
)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
m_write_txn = &txn;
uint64_t num_outputs = m_num_outputs;
try
{
BlockchainDB::add_block(blk, block_size, cumulative_difficulty, coins_generated, txs);
m_write_txn = NULL;
TIME_MEASURE_START(time1);
txn.commit();
TIME_MEASURE_FINISH(time1);
time_commit1 += time1;
}
catch (const std::exception& e)
{
m_num_outputs = num_outputs;
m_write_txn = NULL;
throw;
}
return ++m_height;
}
void BlockchainBDB::pop_block(block& blk, std::vector<transaction>& txs)
{
LOG_PRINT_L3("BlockchainBDB::" << __func__);
check_open();
bdb_txn_safe txn;
if (m_env->txn_begin(NULL, txn, 0))
throw0(DB_ERROR("Failed to create a transaction for the db"));
m_write_txn = &txn;
uint64_t num_outputs = m_num_outputs;
try
{
BlockchainDB::pop_block(blk, txs);
m_write_txn = NULL;
txn.commit();
}
catch (...)
{
m_num_outputs = num_outputs;
m_write_txn = NULL;
throw;
}
--m_height;
}
} // namespace cryptonote
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