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monero/src/blockchain_db/lmdb/db_lmdb.cpp

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// Copyright (c) 2014-2016, 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_lmdb.h"
#include <boost/filesystem.hpp>
#include <boost/format.hpp>
#include <boost/current_function.hpp>
#include <memory> // std::unique_ptr
#include <cstring> // memcpy
#include <random>
#include "cryptonote_core/cryptonote_format_utils.h"
#include "crypto/crypto.h"
#include "profile_tools.h"
#if defined(__i386) || defined(__x86_64)
#define MISALIGNED_OK 1
#endif
using epee::string_tools::pod_to_hex;
// Increase when the DB changes in a non backward compatible way, and there
// is no automatic conversion, so that a full resync is needed.
#define VERSION 1
namespace
{
#pragma pack(push, 1)
// This MUST be identical to output_data_t, without the extra rct data at the end
struct pre_rct_output_data_t
{
crypto::public_key pubkey; //!< the output's public key (for spend verification)
uint64_t unlock_time; //!< the output's unlock time (or height)
uint64_t height; //!< the height of the block which created the output
};
#pragma pack(pop)
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;
}
#define MDB_val_set(var, val) MDB_val var = {sizeof(val), (void *)&val}
template<typename T>
struct MDB_val_copy: public MDB_val
{
MDB_val_copy(const T &t) :
t_copy(t)
{
mv_size = sizeof (T);
mv_data = &t_copy;
}
private:
T t_copy;
};
template<>
struct MDB_val_copy<cryptonote::blobdata>: public MDB_val
{
MDB_val_copy(const cryptonote::blobdata &bd) :
data(new char[bd.size()])
{
memcpy(data.get(), bd.data(), bd.size());
mv_size = bd.size();
mv_data = data.get();
}
private:
std::unique_ptr<char[]> data;
};
template<>
struct MDB_val_copy<const char*>: public MDB_val
{
MDB_val_copy(const char *s):
size(strlen(s)+1), // include the NUL, makes it easier for compares
data(new char[size])
{
mv_size = size;
mv_data = data.get();
memcpy(mv_data, s, size);
}
private:
size_t size;
std::unique_ptr<char[]> data;
};
int compare_uint64(const MDB_val *a, const MDB_val *b)
{
const uint64_t va = *(const uint64_t *)a->mv_data;
const uint64_t vb = *(const uint64_t *)b->mv_data;
return (va < vb) ? -1 : va > vb;
}
int compare_hash32(const MDB_val *a, const MDB_val *b)
{
uint32_t *va = (uint32_t*) a->mv_data;
uint32_t *vb = (uint32_t*) b->mv_data;
for (int n = 7; n >= 0; n--)
{
if (va[n] == vb[n])
continue;
return va[n] < vb[n] ? -1 : 1;
}
return 0;
}
int compare_string(const MDB_val *a, const MDB_val *b)
{
const char *va = (const char*) a->mv_data;
const char *vb = (const char*) b->mv_data;
return strcmp(va, vb);
}
/* DB schema:
*
* Table Key Data
* ----- --- ----
* blocks block ID block blob
* block_heights block hash block height
* block_info block ID {block metadata}
*
* txs txn ID txn blob
* tx_indices txn hash {txn ID, metadata}
* tx_outputs txn ID [txn amount output indices]
*
* output_txs output ID {txn hash, local index}
* output_amounts amount [{amount output index, metadata}...]
*
* spent_keys input hash -
*
* Note: where the data items are of uniform size, DUPFIXED tables have
* been used to save space. In most of these cases, a dummy "zerokval"
* key is used when accessing the table; the Key listed above will be
* attached as a prefix on the Data to serve as the DUPSORT key.
* (DUPFIXED saves 8 bytes per record.)
*
* The output_amounts table doesn't use a dummy key, but uses DUPSORT.
*/
const char* const LMDB_BLOCKS = "blocks";
const char* const LMDB_BLOCK_HEIGHTS = "block_heights";
const char* const LMDB_BLOCK_INFO = "block_info";
const char* const LMDB_TXS = "txs";
const char* const LMDB_TX_INDICES = "tx_indices";
const char* const LMDB_TX_OUTPUTS = "tx_outputs";
const char* const LMDB_OUTPUT_TXS = "output_txs";
const char* const LMDB_OUTPUT_AMOUNTS = "output_amounts";
const char* const LMDB_SPENT_KEYS = "spent_keys";
const char* const LMDB_HF_STARTING_HEIGHTS = "hf_starting_heights";
const char* const LMDB_HF_VERSIONS = "hf_versions";
const char* const LMDB_PROPERTIES = "properties";
const char zerokey[8] = {0};
const MDB_val zerokval = { sizeof(zerokey), (void *)zerokey };
const std::string lmdb_error(const std::string& error_string, int mdb_res)
{
const std::string full_string = error_string + mdb_strerror(mdb_res);
return full_string;
}
inline void lmdb_db_open(MDB_txn* txn, const char* name, int flags, MDB_dbi& dbi, const std::string& error_string)
{
if (auto res = mdb_dbi_open(txn, name, flags, &dbi))
throw0(cryptonote::DB_OPEN_FAILURE(lmdb_error(error_string + " : ", res).c_str()));
}
} // anonymous namespace
#define CURSOR(name) \
if (!m_cur_ ## name) { \
int result = mdb_cursor_open(*m_write_txn, m_ ## name, &m_cur_ ## name); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to open cursor: ", result).c_str())); \
}
#define RCURSOR(name) \
if (!m_cur_ ## name) { \
int result = mdb_cursor_open(m_txn, m_ ## name, (MDB_cursor **)&m_cur_ ## name); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to open cursor: ", result).c_str())); \
if (m_cursors != &m_wcursors) \
m_tinfo->m_ti_rflags.m_rf_ ## name = true; \
} else if (m_cursors != &m_wcursors && !m_tinfo->m_ti_rflags.m_rf_ ## name) { \
int result = mdb_cursor_renew(m_txn, m_cur_ ## name); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to renew cursor: ", result).c_str())); \
m_tinfo->m_ti_rflags.m_rf_ ## name = true; \
}
namespace cryptonote
{
typedef struct mdb_block_info
{
uint64_t bi_height;
uint64_t bi_timestamp;
uint64_t bi_coins;
uint64_t bi_size; // a size_t really but we need 32-bit compat
difficulty_type bi_diff;
crypto::hash bi_hash;
} mdb_block_info;
typedef struct blk_height {
crypto::hash bh_hash;
uint64_t bh_height;
} blk_height;
typedef struct txindex {
crypto::hash key;
tx_data_t data;
} txindex;
typedef struct pre_rct_outkey {
uint64_t amount_index;
uint64_t output_id;
pre_rct_output_data_t data;
} pre_rct_outkey;
typedef struct outkey {
uint64_t amount_index;
uint64_t output_id;
output_data_t data;
} outkey;
typedef struct outtx {
uint64_t output_id;
crypto::hash tx_hash;
uint64_t local_index;
} outtx;
std::atomic<uint64_t> mdb_txn_safe::num_active_txns{0};
std::atomic_flag mdb_txn_safe::creation_gate = ATOMIC_FLAG_INIT;
mdb_threadinfo::~mdb_threadinfo()
{
MDB_cursor **cur = &m_ti_rcursors.m_txc_blocks;
unsigned i;
for (i=0; i<sizeof(mdb_txn_cursors)/sizeof(MDB_cursor *); i++)
if (cur[i])
mdb_cursor_close(cur[i]);
if (m_ti_rtxn)
mdb_txn_abort(m_ti_rtxn);
}
mdb_txn_safe::mdb_txn_safe(const bool check) : m_txn(NULL), m_tinfo(NULL), m_check(check)
{
if (check)
{
while (creation_gate.test_and_set());
num_active_txns++;
creation_gate.clear();
}
}
mdb_txn_safe::~mdb_txn_safe()
{
if (!m_check)
return;
LOG_PRINT_L3("mdb_txn_safe: destructor");
if (m_tinfo != nullptr)
{
mdb_txn_reset(m_tinfo->m_ti_rtxn);
memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
} else if (m_txn != nullptr)
{
if (m_batch_txn) // this is a batch txn and should have been handled before this point for safety
{
LOG_PRINT_L0("WARNING: mdb_txn_safe: m_txn is a batch txn and it's not NULL in destructor - calling mdb_txn_abort()");
}
else
{
// Example of when this occurs: a lookup fails, so a read-only txn is
// aborted through this destructor. However, successful read-only txns
// ideally should have been committed when done and not end up here.
//
// NOTE: not sure if this is ever reached for a non-batch write
// transaction, but it's probably not ideal if it did.
LOG_PRINT_L3("mdb_txn_safe: m_txn not NULL in destructor - calling mdb_txn_abort()");
}
mdb_txn_abort(m_txn);
}
num_active_txns--;
}
void mdb_txn_safe::commit(std::string message)
{
if (message.size() == 0)
{
message = "Failed to commit a transaction to the db";
}
if (auto result = mdb_txn_commit(m_txn))
{
m_txn = nullptr;
throw0(DB_ERROR(lmdb_error(message + ": ", result).c_str()));
}
m_txn = nullptr;
}
void mdb_txn_safe::abort()
{
LOG_PRINT_L3("mdb_txn_safe: abort()");
if(m_txn != nullptr)
{
mdb_txn_abort(m_txn);
m_txn = nullptr;
}
else
{
LOG_PRINT_L0("WARNING: mdb_txn_safe: abort() called, but m_txn is NULL");
}
}
uint64_t mdb_txn_safe::num_active_tx() const
{
return num_active_txns;
}
void mdb_txn_safe::prevent_new_txns()
{
while (creation_gate.test_and_set());
}
void mdb_txn_safe::wait_no_active_txns()
{
while (num_active_txns > 0);
}
void mdb_txn_safe::allow_new_txns()
{
creation_gate.clear();
}
void BlockchainLMDB::do_resize(uint64_t increase_size)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
CRITICAL_REGION_LOCAL(m_synchronization_lock);
const uint64_t add_size = 1LL << 30;
// check disk capacity
try
{
boost::filesystem::path path(m_folder);
boost::filesystem::space_info si = boost::filesystem::space(path);
if(si.available < add_size)
{
LOG_PRINT_RED_L0("!! WARNING: Insufficient free space to extend database !!: " << si.available / 1LL << 20L);
return;
}
}
catch(...)
{
// print something but proceed.
LOG_PRINT_YELLOW("Unable to query free disk space.", LOG_LEVEL_0);
}
MDB_envinfo mei;
mdb_env_info(m_env, &mei);
MDB_stat mst;
mdb_env_stat(m_env, &mst);
// add 1Gb per resize, instead of doing a percentage increase
uint64_t new_mapsize = (double) mei.me_mapsize + add_size;
// If given, use increase_size intead of above way of resizing.
// This is currently used for increasing by an estimated size at start of new
// batch txn.
if (increase_size > 0)
new_mapsize = mei.me_mapsize + increase_size;
new_mapsize += (new_mapsize % mst.ms_psize);
mdb_txn_safe::prevent_new_txns();
if (m_write_txn != nullptr)
{
if (m_batch_active)
{
throw0(DB_ERROR("lmdb resizing not yet supported when batch transactions enabled!"));
}
else
{
throw0(DB_ERROR("attempting resize with write transaction in progress, this should not happen!"));
}
}
mdb_txn_safe::wait_no_active_txns();
int result = mdb_env_set_mapsize(m_env, new_mapsize);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to set new mapsize: ", result).c_str()));
LOG_PRINT_GREEN("LMDB Mapsize increased." << " Old: " << mei.me_mapsize / (1024 * 1024) << "MiB" << ", New: " << new_mapsize / (1024 * 1024) << "MiB", LOG_LEVEL_0);
mdb_txn_safe::allow_new_txns();
}
// threshold_size is used for batch transactions
bool BlockchainLMDB::need_resize(uint64_t threshold_size) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
#if defined(ENABLE_AUTO_RESIZE)
MDB_envinfo mei;
mdb_env_info(m_env, &mei);
MDB_stat mst;
mdb_env_stat(m_env, &mst);
// size_used doesn't include data yet to be committed, which can be
// significant size during batch transactions. For that, we estimate the size
// needed at the beginning of the batch transaction and pass in the
// additional size needed.
uint64_t size_used = mst.ms_psize * mei.me_last_pgno;
LOG_PRINT_L1("DB map size: " << mei.me_mapsize);
LOG_PRINT_L1("Space used: " << size_used);
LOG_PRINT_L1("Space remaining: " << mei.me_mapsize - size_used);
LOG_PRINT_L1("Size threshold: " << threshold_size);
float resize_percent_old = RESIZE_PERCENT;
LOG_PRINT_L1(boost::format("Percent used: %.04f Percent threshold: %.04f") % ((double)size_used/mei.me_mapsize) % resize_percent_old);
if (threshold_size > 0)
{
if (mei.me_mapsize - size_used < threshold_size)
{
LOG_PRINT_L1("Threshold met (size-based)");
return true;
}
else
return false;
}
std::mt19937 engine(std::random_device{}());
std::uniform_real_distribution<double> fdis(0.6, 0.9);
double resize_percent = fdis(engine);
if ((double)size_used / mei.me_mapsize > resize_percent)
{
LOG_PRINT_L1("Threshold met (percent-based)");
return true;
}
return false;
#else
return false;
#endif
}
void BlockchainLMDB::check_and_resize_for_batch(uint64_t batch_num_blocks)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
LOG_PRINT_L1("[" << __func__ << "] " << "checking DB size");
const uint64_t min_increase_size = 512 * (1 << 20);
uint64_t threshold_size = 0;
uint64_t increase_size = 0;
if (batch_num_blocks > 0)
{
threshold_size = get_estimated_batch_size(batch_num_blocks);
LOG_PRINT_L1("calculated batch size: " << threshold_size);
// The increased DB size could be a multiple of threshold_size, a fixed
// size increase (> threshold_size), or other variations.
//
// Currently we use the greater of threshold size and a minimum size. The
// minimum size increase is used to avoid frequent resizes when the batch
// size is set to a very small numbers of blocks.
increase_size = (threshold_size > min_increase_size) ? threshold_size : min_increase_size;
LOG_PRINT_L1("increase size: " << increase_size);
}
// if threshold_size is 0 (i.e. number of blocks for batch not passed in), it
// will fall back to the percent-based threshold check instead of the
// size-based check
if (need_resize(threshold_size))
{
LOG_PRINT_L0("[batch] DB resize needed");
do_resize(increase_size);
}
}
uint64_t BlockchainLMDB::get_estimated_batch_size(uint64_t batch_num_blocks) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
uint64_t threshold_size = 0;
// batch size estimate * batch safety factor = final size estimate
// Takes into account "reasonable" block size increases in batch.
float batch_safety_factor = 1.7f;
float batch_fudge_factor = batch_safety_factor * batch_num_blocks;
// estimate of stored block expanded from raw block, including denormalization and db overhead.
// Note that this probably doesn't grow linearly with block size.
float db_expand_factor = 4.5f;
uint64_t num_prev_blocks = 500;
// For resizing purposes, allow for at least 4k average block size.
uint64_t min_block_size = 4 * 1024;
uint64_t block_stop = 0;
uint64_t m_height = height();
if (m_height > 1)
block_stop = m_height - 1;
uint64_t block_start = 0;
if (block_stop >= num_prev_blocks)
block_start = block_stop - num_prev_blocks + 1;
uint32_t num_blocks_used = 0;
uint64_t total_block_size = 0;
LOG_PRINT_L1("[" << __func__ << "] " << "m_height: " << m_height << " block_start: " << block_start << " block_stop: " << block_stop);
size_t avg_block_size = 0;
if (m_height == 0)
{
LOG_PRINT_L1("No existing blocks to check for average block size");
}
else if (m_cum_count)
{
avg_block_size = m_cum_size / m_cum_count;
LOG_PRINT_L1("average block size across recent " << m_cum_count << " blocks: " << avg_block_size);
m_cum_size = 0;
m_cum_count = 0;
}
else
{
for (uint64_t block_num = block_start; block_num <= block_stop; ++block_num)
{
uint32_t block_size = get_block_size(block_num);
total_block_size += block_size;
// Track number of blocks being totalled here instead of assuming, in case
// some blocks were to be skipped for being outliers.
++num_blocks_used;
}
avg_block_size = total_block_size / num_blocks_used;
LOG_PRINT_L1("average block size across recent " << num_blocks_used << " blocks: " << avg_block_size);
}
if (avg_block_size < min_block_size)
avg_block_size = min_block_size;
LOG_PRINT_L1("estimated average block size for batch: " << avg_block_size);
// bigger safety margin on smaller block sizes
if (batch_fudge_factor < 5000.0)
batch_fudge_factor = 5000.0;
threshold_size = avg_block_size * db_expand_factor * batch_fudge_factor;
return threshold_size;
}
void BlockchainLMDB::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("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
uint64_t m_height = height();
CURSOR(block_heights)
blk_height bh = {blk_hash, m_height};
MDB_val_set(val_h, bh);
if (mdb_cursor_get(m_cur_block_heights, (MDB_val *)&zerokval, &val_h, MDB_GET_BOTH) == 0)
throw1(BLOCK_EXISTS("Attempting to add block that's already in the db"));
if (m_height > 0)
{
MDB_val_set(parent_key, blk.prev_id);
int result = mdb_cursor_get(m_cur_block_heights, (MDB_val *)&zerokval, &parent_key, MDB_GET_BOTH);
if (result)
{
LOG_PRINT_L3("m_height: " << m_height);
LOG_PRINT_L3("parent_key: " << blk.prev_id);
throw0(DB_ERROR(lmdb_error("Failed to get top block hash to check for new block's parent: ", result).c_str()));
}
blk_height *prev = (blk_height *)parent_key.mv_data;
if (prev->bh_height != m_height - 1)
throw0(BLOCK_PARENT_DNE("Top block is not new block's parent"));
}
int result = 0;
MDB_val_set(key, m_height);
CURSOR(blocks)
CURSOR(block_info)
MDB_val_copy<blobdata> blob(block_to_blob(blk));
result = mdb_cursor_put(m_cur_blocks, &key, &blob, MDB_APPEND);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add block blob to db transaction: ", result).c_str()));
mdb_block_info bi;
bi.bi_height = m_height;
bi.bi_timestamp = blk.timestamp;
bi.bi_coins = coins_generated;
bi.bi_size = block_size;
bi.bi_diff = cumulative_difficulty;
bi.bi_hash = blk_hash;
MDB_val_set(val, bi);
result = mdb_cursor_put(m_cur_block_info, (MDB_val *)&zerokval, &val, MDB_APPENDDUP);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add block info to db transaction: ", result).c_str()));
result = mdb_cursor_put(m_cur_block_heights, (MDB_val *)&zerokval, &val_h, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add block height by hash to db transaction: ", result).c_str()));
m_cum_size += block_size;
m_cum_count++;
}
void BlockchainLMDB::remove_block()
{
int result;
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
uint64_t m_height = height();
if (m_height == 0)
throw0(BLOCK_DNE ("Attempting to remove block from an empty blockchain"));
mdb_txn_cursors *m_cursors = &m_wcursors;
CURSOR(block_info)
CURSOR(block_heights)
CURSOR(blocks)
MDB_val_copy<uint64_t> k(m_height - 1);
MDB_val h = k;
if ((result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &h, MDB_GET_BOTH)))
throw1(BLOCK_DNE(lmdb_error("Attempting to remove block that's not in the db: ", result).c_str()));
// must use h now; deleting from m_block_info will invalidate it
mdb_block_info *bi = (mdb_block_info *)h.mv_data;
blk_height bh = {bi->bi_hash, 0};
h.mv_data = (void *)&bh;
h.mv_size = sizeof(bh);
if ((result = mdb_cursor_get(m_cur_block_heights, (MDB_val *)&zerokval, &h, MDB_GET_BOTH)))
throw1(DB_ERROR(lmdb_error("Failed to locate block height by hash for removal: ", result).c_str()));
if ((result = mdb_cursor_del(m_cur_block_heights, 0)))
throw1(DB_ERROR(lmdb_error("Failed to add removal of block height by hash to db transaction: ", result).c_str()));
if ((result = mdb_cursor_get(m_cur_blocks, &k, NULL, MDB_SET)))
throw1(DB_ERROR(lmdb_error("Failed to locate block for removal: ", result).c_str()));
if ((result = mdb_cursor_del(m_cur_blocks, 0)))
throw1(DB_ERROR(lmdb_error("Failed to add removal of block to db transaction: ", result).c_str()));
if ((result = mdb_cursor_del(m_cur_block_info, 0)))
throw1(DB_ERROR(lmdb_error("Failed to add removal of block info to db transaction: ", result).c_str()));
}
uint64_t BlockchainLMDB::add_transaction_data(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash& tx_hash)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
uint64_t m_height = height();
int result;
uint64_t tx_id = m_num_txs;
CURSOR(txs)
CURSOR(tx_indices)
MDB_val_set(val_tx_id, tx_id);
MDB_val_set(val_h, tx_hash);
result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &val_h, MDB_GET_BOTH);
if (result == 0) {
txindex *tip = (txindex *)val_h.mv_data;
throw1(TX_EXISTS(std::string("Attempting to add transaction that's already in the db (tx id ").append(boost::lexical_cast<std::string>(tip->data.tx_id)).append(")").c_str()));
} else if (result != MDB_NOTFOUND) {
throw1(DB_ERROR(lmdb_error(std::string("Error checking if tx index exists for tx hash ") + epee::string_tools::pod_to_hex(tx_hash) + ": ", result).c_str()));
}
txindex ti;
ti.key = tx_hash;
ti.data.tx_id = tx_id;
ti.data.unlock_time = tx.unlock_time;
ti.data.block_id = m_height; // we don't need blk_hash since we know m_height
val_h.mv_size = sizeof(ti);
val_h.mv_data = (void *)&ti;
result = mdb_cursor_put(m_cur_tx_indices, (MDB_val *)&zerokval, &val_h, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add tx data to db transaction: ", result).c_str()));
MDB_val_copy<blobdata> blob(tx_to_blob(tx));
result = mdb_cursor_put(m_cur_txs, &val_tx_id, &blob, MDB_APPEND);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add tx blob to db transaction: ", result).c_str()));
m_num_txs++;
return tx_id;
}
// TODO: compare pros and cons of looking up the tx hash's tx index once and
// passing it in to functions like this
void BlockchainLMDB::remove_transaction_data(const crypto::hash& tx_hash, const transaction& tx)
{
int result;
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
CURSOR(tx_indices)
CURSOR(txs)
CURSOR(tx_outputs)
MDB_val_set(val_h, tx_hash);
if (mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &val_h, MDB_GET_BOTH))
throw1(TX_DNE("Attempting to remove transaction that isn't in the db"));
txindex *tip = (txindex *)val_h.mv_data;
MDB_val_set(val_tx_id, tip->data.tx_id);
if ((result = mdb_cursor_get(m_cur_txs, &val_tx_id, NULL, MDB_SET)))
throw1(DB_ERROR(lmdb_error("Failed to locate tx for removal: ", result).c_str()));
result = mdb_cursor_del(m_cur_txs, 0);
if (result)
throw1(DB_ERROR(lmdb_error("Failed to add removal of tx to db transaction: ", result).c_str()));
remove_tx_outputs(tip->data.tx_id, tx);
result = mdb_cursor_get(m_cur_tx_outputs, &val_tx_id, NULL, MDB_SET);
if (result == MDB_NOTFOUND)
LOG_PRINT_L1("tx has no outputs to remove: " << tx_hash);
else if (result)
throw1(DB_ERROR(lmdb_error("Failed to locate tx outputs for removal: ", result).c_str()));
if (!result)
{
result = mdb_cursor_del(m_cur_tx_outputs, 0);
if (result)
throw1(DB_ERROR(lmdb_error("Failed to add removal of tx outputs to db transaction: ", result).c_str()));
}
// Don't delete the tx_indices entry until the end, after we're done with val_tx_id
if (mdb_cursor_del(m_cur_tx_indices, 0))
throw1(DB_ERROR("Failed to add removal of tx index to db transaction"));
m_num_txs--;
}
uint64_t BlockchainLMDB::add_output(const crypto::hash& tx_hash,
const tx_out& tx_output,
const uint64_t& local_index,
const uint64_t unlock_time,
const rct::key *commitment)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
uint64_t m_height = height();
int result = 0;
CURSOR(output_txs)
CURSOR(output_amounts)
if (tx_output.target.type() != typeid(txout_to_key))
throw0(DB_ERROR("Wrong output type: expected txout_to_key"));
if (tx_output.amount == 0 && !commitment)
throw0(DB_ERROR("RCT output without commitment"));
outtx ot = {m_num_outputs, tx_hash, local_index};
MDB_val_set(vot, ot);
result = mdb_cursor_put(m_cur_output_txs, (MDB_val *)&zerokval, &vot, MDB_APPENDDUP);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to add output tx hash to db transaction: ", result).c_str()));
outkey ok;
MDB_val data;
MDB_val_copy<uint64_t> val_amount(tx_output.amount);
result = mdb_cursor_get(m_cur_output_amounts, &val_amount, &data, MDB_SET);
if (!result)
{
mdb_size_t num_elems = 0;
result = mdb_cursor_count(m_cur_output_amounts, &num_elems);
if (result)
throw0(DB_ERROR(std::string("Failed to get number of outputs for amount: ").append(mdb_strerror(result)).c_str()));
ok.amount_index = num_elems;
}
else if (result != MDB_NOTFOUND)
throw0(DB_ERROR(lmdb_error("Failed to get output amount in db transaction: ", result).c_str()));
else
ok.amount_index = 0;
ok.output_id = m_num_outputs;
ok.data.pubkey = boost::get < txout_to_key > (tx_output.target).key;
ok.data.unlock_time = unlock_time;
ok.data.height = m_height;
if (tx_output.amount == 0)
{
ok.data.commitment = *commitment;
data.mv_size = sizeof(ok);
}
else
{
data.mv_size = sizeof(pre_rct_outkey);
}
data.mv_data = &ok;
if ((result = mdb_cursor_put(m_cur_output_amounts, &val_amount, &data, MDB_APPENDDUP)))
throw0(DB_ERROR(lmdb_error("Failed to add output pubkey to db transaction: ", result).c_str()));
m_num_outputs++;
return ok.amount_index;
}
void BlockchainLMDB::add_tx_amount_output_indices(const uint64_t tx_id,
const std::vector<uint64_t>& amount_output_indices)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
CURSOR(tx_outputs)
int result = 0;
int num_outputs = amount_output_indices.size();
MDB_val_set(k_tx_id, tx_id);
MDB_val v;
v.mv_data = (void *)amount_output_indices.data();
v.mv_size = sizeof(uint64_t) * num_outputs;
// LOG_PRINT_L1("tx_outputs[tx_hash] size: " << v.mv_size);
result = mdb_cursor_put(m_cur_tx_outputs, &k_tx_id, &v, MDB_APPEND);
if (result)
throw0(DB_ERROR(std::string("Failed to add <tx hash, amount output index array> to db transaction: ").append(mdb_strerror(result)).c_str()));
}
void BlockchainLMDB::remove_tx_outputs(const uint64_t tx_id, const transaction& tx)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
std::vector<uint64_t> amount_output_indices = get_tx_amount_output_indices(tx_id);
if (amount_output_indices.empty())
{
if (tx.vout.empty())
LOG_PRINT_L2("tx has no outputs, so no output indices");
else
throw0(DB_ERROR("tx has outputs, but no output indices found"));
}
bool is_pseudo_rct = tx.version >= 2 && tx.vin.size() == 1 && tx.vin[0].type() == typeid(txin_gen);
for (size_t i = tx.vout.size(); i-- > 0;)
{
uint64_t amount = is_pseudo_rct ? 0 : tx.vout[i].amount;
remove_output(amount, amount_output_indices[i]);
}
}
void BlockchainLMDB::remove_output(const uint64_t amount, const uint64_t& out_index)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
CURSOR(output_amounts);
CURSOR(output_txs);
MDB_val_set(k, amount);
MDB_val_set(v, out_index);
auto result = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_GET_BOTH);
if (result == MDB_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(lmdb_error("DB error attempting to get an output", result).c_str()));
const pre_rct_outkey *ok = (const pre_rct_outkey *)v.mv_data;
MDB_val_set(otxk, ok->output_id);
result = mdb_cursor_get(m_cur_output_txs, (MDB_val *)&zerokval, &otxk, MDB_GET_BOTH);
if (result == MDB_NOTFOUND)
{
throw0(DB_ERROR("Unexpected: global output index not found in m_output_txs"));
}
else if (result)
{
throw1(DB_ERROR(lmdb_error("Error adding removal of output tx to db transaction", result).c_str()));
}
result = mdb_cursor_del(m_cur_output_txs, 0);
if (result)
throw0(DB_ERROR(lmdb_error(std::string("Error deleting output index ").append(boost::lexical_cast<std::string>(out_index).append(": ")).c_str(), result).c_str()));
// now delete the amount
result = mdb_cursor_del(m_cur_output_amounts, 0);
if (result)
throw0(DB_ERROR(lmdb_error(std::string("Error deleting amount for output index ").append(boost::lexical_cast<std::string>(out_index).append(": ")).c_str(), result).c_str()));
m_num_outputs--;
}
void BlockchainLMDB::add_spent_key(const crypto::key_image& k_image)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
CURSOR(spent_keys)
MDB_val k = {sizeof(k_image), (void *)&k_image};
if (auto result = mdb_cursor_put(m_cur_spent_keys, (MDB_val *)&zerokval, &k, MDB_NODUPDATA)) {
if (result == MDB_KEYEXIST)
throw1(KEY_IMAGE_EXISTS("Attempting to add spent key image that's already in the db"));
else
throw1(DB_ERROR(lmdb_error("Error adding spent key image to db transaction: ", result).c_str()));
}
}
void BlockchainLMDB::remove_spent_key(const crypto::key_image& k_image)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_cursors *m_cursors = &m_wcursors;
CURSOR(spent_keys)
MDB_val k = {sizeof(k_image), (void *)&k_image};
auto result = mdb_cursor_get(m_cur_spent_keys, (MDB_val *)&zerokval, &k, MDB_GET_BOTH);
if (result != 0 && result != MDB_NOTFOUND)
throw1(DB_ERROR(lmdb_error("Error finding spent key to remove", result).c_str()));
if (!result)
{
result = mdb_cursor_del(m_cur_spent_keys, 0);
if (result)
throw1(DB_ERROR(lmdb_error("Error adding removal of key image to db transaction", result).c_str()));
}
}
blobdata BlockchainLMDB::output_to_blob(const tx_out& output) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
blobdata b;
if (!t_serializable_object_to_blob(output, b))
throw1(DB_ERROR("Error serializing output to blob"));
return b;
}
tx_out BlockchainLMDB::output_from_blob(const blobdata& blob) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __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;
}
void BlockchainLMDB::check_open() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (!m_open)
throw0(DB_ERROR("DB operation attempted on a not-open DB instance"));
}
BlockchainLMDB::~BlockchainLMDB()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
// batch transaction shouldn't be active at this point. If it is, consider it aborted.
if (m_batch_active)
batch_abort();
if (m_open)
close();
}
BlockchainLMDB::BlockchainLMDB(bool batch_transactions)
{
LOG_PRINT_L3("BlockchainLMDB::" << __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_write_batch_txn = nullptr;
m_batch_active = false;
m_cum_size = 0;
m_cum_count = 0;
m_hardfork = nullptr;
}
void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
{
int result;
LOG_PRINT_L3("BlockchainLMDB::" << __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("LMDB needs a directory path, but a file was passed"));
}
else
{
if (!boost::filesystem::create_directories(direc))
throw0(DB_OPEN_FAILURE(std::string("Failed to create directory ").append(filename).c_str()));
}
// check for existing LMDB files in base directory
boost::filesystem::path old_files = direc.parent_path();
if (boost::filesystem::exists(old_files / "data.mdb") || boost::filesystem::exists(old_files / "lock.mdb"))
{
LOG_PRINT_L0("Found existing LMDB files in " << old_files.string());
LOG_PRINT_L0("Move data.mdb and/or lock.mdb to " << filename << ", or delete them, and then restart");
throw DB_ERROR("Database could not be opened");
}
m_folder = filename;
// set up lmdb environment
if ((result = mdb_env_create(&m_env)))
throw0(DB_ERROR(lmdb_error("Failed to create lmdb environment: ", result).c_str()));
if ((result = mdb_env_set_maxdbs(m_env, 20)))
throw0(DB_ERROR(lmdb_error("Failed to set max number of dbs: ", result).c_str()));
size_t mapsize = DEFAULT_MAPSIZE;
if (auto result = mdb_env_open(m_env, filename.c_str(), mdb_flags, 0644))
throw0(DB_ERROR(lmdb_error("Failed to open lmdb environment: ", result).c_str()));
MDB_envinfo mei;
mdb_env_info(m_env, &mei);
uint64_t cur_mapsize = (double)mei.me_mapsize;
if (cur_mapsize < mapsize)
{
if (auto result = mdb_env_set_mapsize(m_env, mapsize))
throw0(DB_ERROR(lmdb_error("Failed to set max memory map size: ", result).c_str()));
mdb_env_info(m_env, &mei);
cur_mapsize = (double)mei.me_mapsize;
LOG_PRINT_L1("LMDB memory map size: " << cur_mapsize);
}
if (need_resize())
{
LOG_PRINT_L0("LMDB memory map needs to be resized, doing that now.");
do_resize();
}
int txn_flags = 0;
if (mdb_flags & MDB_RDONLY)
txn_flags |= MDB_RDONLY;
// get a read/write MDB_txn, depending on mdb_flags
mdb_txn_safe txn;
if (auto mdb_res = mdb_txn_begin(m_env, NULL, txn_flags, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
// open necessary databases, and set properties as needed
// uses macros to avoid having to change things too many places
lmdb_db_open(txn, LMDB_BLOCKS, MDB_INTEGERKEY | MDB_CREATE, m_blocks, "Failed to open db handle for m_blocks");
lmdb_db_open(txn, LMDB_BLOCK_INFO, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_info, "Failed to open db handle for m_block_info");
lmdb_db_open(txn, LMDB_BLOCK_HEIGHTS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for m_block_heights");
lmdb_db_open(txn, LMDB_TXS, MDB_INTEGERKEY | MDB_CREATE, m_txs, "Failed to open db handle for m_txs");
lmdb_db_open(txn, LMDB_TX_INDICES, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_tx_indices, "Failed to open db handle for m_tx_indices");
lmdb_db_open(txn, LMDB_TX_OUTPUTS, MDB_INTEGERKEY | MDB_CREATE, m_tx_outputs, "Failed to open db handle for m_tx_outputs");
lmdb_db_open(txn, LMDB_OUTPUT_TXS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_output_txs, "Failed to open db handle for m_output_txs");
lmdb_db_open(txn, LMDB_OUTPUT_AMOUNTS, MDB_INTEGERKEY | MDB_DUPSORT | MDB_DUPFIXED | MDB_CREATE, m_output_amounts, "Failed to open db handle for m_output_amounts");
lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys");
// this subdb is dropped on sight, so it may not be present when we open the DB.
// Since we use MDB_CREATE, we'll get an exception if we open read-only and it does not exist.
// So we don't open for read-only, and also not drop below. It is not used elsewhere.
if (!(mdb_flags & MDB_RDONLY))
lmdb_db_open(txn, LMDB_HF_STARTING_HEIGHTS, MDB_CREATE, m_hf_starting_heights, "Failed to open db handle for m_hf_starting_heights");
lmdb_db_open(txn, LMDB_HF_VERSIONS, MDB_INTEGERKEY | MDB_CREATE, m_hf_versions, "Failed to open db handle for m_hf_versions");
lmdb_db_open(txn, LMDB_PROPERTIES, MDB_CREATE, m_properties, "Failed to open db handle for m_properties");
mdb_set_dupsort(txn, m_spent_keys, compare_hash32);
mdb_set_dupsort(txn, m_block_heights, compare_hash32);
mdb_set_dupsort(txn, m_tx_indices, compare_hash32);
mdb_set_dupsort(txn, m_output_amounts, compare_uint64);
mdb_set_dupsort(txn, m_output_txs, compare_uint64);
mdb_set_dupsort(txn, m_block_info, compare_uint64);
mdb_set_compare(txn, m_properties, compare_string);
if (!(mdb_flags & MDB_RDONLY))
{
result = mdb_drop(txn, m_hf_starting_heights, 1);
if (result && result != MDB_NOTFOUND)
throw0(DB_ERROR(lmdb_error("Failed to drop m_hf_starting_heights: ", result).c_str()));
}
// get and keep current height
MDB_stat db_stats;
if ((result = mdb_stat(txn, m_blocks, &db_stats)))
throw0(DB_ERROR(lmdb_error("Failed to query m_blocks: ", result).c_str()));
LOG_PRINT_L2("Setting m_height to: " << db_stats.ms_entries);
uint64_t m_height = db_stats.ms_entries;
// get and keep current number of txs
if ((result = mdb_stat(txn, m_txs, &db_stats)))
throw0(DB_ERROR(lmdb_error("Failed to query m_txs: ", result).c_str()));
m_num_txs = db_stats.ms_entries;
// get and keep current number of outputs
if ((result = mdb_stat(txn, m_output_txs, &db_stats)))
throw0(DB_ERROR(lmdb_error("Failed to query m_output_txs: ", result).c_str()));
m_num_outputs = db_stats.ms_entries;
bool compatible = true;
MDB_val_copy<const char*> k("version");
MDB_val v;
auto get_result = mdb_get(txn, m_properties, &k, &v);
if(get_result == MDB_SUCCESS)
{
if (*(const uint32_t*)v.mv_data > VERSION)
{
LOG_PRINT_RED_L0("Existing lmdb database was made by a later version. We don't know how it will change yet.");
compatible = false;
}
#if VERSION > 0
else if (*(const uint32_t*)v.mv_data < VERSION)
{
// Note that there was a schema change within version 0 as well.
// See commit e5d2680094ee15889934fe28901e4e133cda56f2 2015/07/10
// We don't handle the old format previous to that commit.
txn.commit();
m_open = true;
migrate(*(const uint32_t *)v.mv_data);
return;
}
#endif
}
else
{
// if not found, and the DB is non-empty, this is probably
// an "old" version 0, which we don't handle. If the DB is
// empty it's fine.
if (VERSION > 0 && m_height > 0)
compatible = false;
}
if (!compatible)
{
txn.abort();
mdb_env_close(m_env);
m_open = false;
LOG_PRINT_RED_L0("Existing lmdb database is incompatible with this version.");
LOG_PRINT_RED_L0("Please delete the existing database and resync.");
return;
}
if (!(mdb_flags & MDB_RDONLY))
{
// only write version on an empty DB
if (m_height == 0)
{
MDB_val_copy<const char*> k("version");
MDB_val_copy<uint32_t> v(VERSION);
auto put_result = mdb_put(txn, m_properties, &k, &v, 0);
if (put_result != MDB_SUCCESS)
{
txn.abort();
mdb_env_close(m_env);
m_open = false;
LOG_PRINT_RED_L0("Failed to write version to database.");
return;
}
}
}
// commit the transaction
txn.commit();
m_open = true;
// from here, init should be finished
}
void BlockchainLMDB::close()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (m_batch_active)
{
LOG_PRINT_L3("close() first calling batch_abort() due to active batch transaction");
batch_abort();
}
this->sync();
m_tinfo.reset();
// FIXME: not yet thread safe!!! Use with care.
mdb_env_close(m_env);
m_open = false;
}
void BlockchainLMDB::sync()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
// Does nothing unless LMDB environment was opened with MDB_NOSYNC or in part
// MDB_NOMETASYNC. Force flush to be synchronous.
if (auto result = mdb_env_sync(m_env, true))
{
throw0(DB_ERROR(lmdb_error("Failed to sync database: ", result).c_str()));
}
}
void BlockchainLMDB::reset()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
mdb_txn_safe txn;
if (auto result = mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
if (auto result = mdb_drop(txn, m_blocks, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_blocks: ", result).c_str()));
if (auto result = mdb_drop(txn, m_block_info, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_block_info: ", result).c_str()));
if (auto result = mdb_drop(txn, m_block_heights, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_block_heights: ", result).c_str()));
if (auto result = mdb_drop(txn, m_txs, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_txs: ", result).c_str()));
if (auto result = mdb_drop(txn, m_tx_indices, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_tx_indices: ", result).c_str()));
if (auto result = mdb_drop(txn, m_tx_outputs, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_tx_outputs: ", result).c_str()));
if (auto result = mdb_drop(txn, m_output_txs, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_output_txs: ", result).c_str()));
if (auto result = mdb_drop(txn, m_output_amounts, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_output_amounts: ", result).c_str()));
if (auto result = mdb_drop(txn, m_spent_keys, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_spent_keys: ", result).c_str()));
(void)mdb_drop(txn, m_hf_starting_heights, 0); // this one is dropped in new code
if (auto result = mdb_drop(txn, m_hf_versions, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_hf_versions: ", result).c_str()));
if (auto result = mdb_drop(txn, m_properties, 0))
throw0(DB_ERROR(lmdb_error("Failed to drop m_properties: ", result).c_str()));
// init with current version
MDB_val_copy<const char*> k("version");
MDB_val_copy<uint32_t> v(VERSION);
if (auto result = mdb_put(txn, m_properties, &k, &v, 0))
throw0(DB_ERROR(lmdb_error("Failed to write version to database: ", result).c_str()));
txn.commit();
m_num_outputs = 0;
m_cum_size = 0;
m_cum_count = 0;
}
std::vector<std::string> BlockchainLMDB::get_filenames() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
std::vector<std::string> filenames;
boost::filesystem::path datafile(m_folder);
datafile /= "data.mdb";
boost::filesystem::path lockfile(m_folder);
lockfile /= "lock.mdb";
filenames.push_back(datafile.string());
filenames.push_back(lockfile.string());
return filenames;
}
std::string BlockchainLMDB::get_db_name() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
return std::string("lmdb");
}
// TODO: this?
bool BlockchainLMDB::lock()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
return false;
}
// TODO: this?
void BlockchainLMDB::unlock()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
}
#define TXN_PREFIX(flags); \
mdb_txn_safe auto_txn; \
mdb_txn_safe* txn_ptr = &auto_txn; \
if (m_batch_active) \
txn_ptr = m_write_txn; \
else \
{ \
if (auto mdb_res = mdb_txn_begin(m_env, NULL, flags, auto_txn)) \
throw0(DB_ERROR(lmdb_error(std::string("Failed to create a transaction for the db in ")+__FUNCTION__+": ", mdb_res).c_str())); \
} \
#define TXN_PREFIX_RDONLY() \
MDB_txn *m_txn; \
mdb_txn_cursors *m_cursors; \
bool my_rtxn = block_rtxn_start(&m_txn, &m_cursors); \
mdb_txn_safe auto_txn(my_rtxn); \
if (my_rtxn) auto_txn.m_tinfo = m_tinfo.get()
#define TXN_POSTFIX_RDONLY()
#define TXN_POSTFIX_SUCCESS() \
do { \
if (! m_batch_active) \
auto_txn.commit(); \
} while(0)
// The below two macros are for DB access within block add/remove, whether
// regular batch txn is in use or not. m_write_txn is used as a batch txn, even
// if it's only within block add/remove.
//
// DB access functions that may be called both within block add/remove and
// without should use these. If the function will be called ONLY within block
// add/remove, m_write_txn alone may be used instead of these macros.
#define TXN_BLOCK_PREFIX(flags); \
mdb_txn_safe auto_txn; \
mdb_txn_safe* txn_ptr = &auto_txn; \
if (m_batch_active || m_write_txn) \
txn_ptr = m_write_txn; \
else \
{ \
if (auto mdb_res = mdb_txn_begin(m_env, NULL, flags, auto_txn)) \
throw0(DB_ERROR(lmdb_error(std::string("Failed to create a transaction for the db in ")+__FUNCTION__+": ", mdb_res).c_str())); \
} \
#define TXN_BLOCK_POSTFIX_SUCCESS() \
do { \
if (! m_batch_active && ! m_write_txn) \
auto_txn.commit(); \
} while(0)
bool BlockchainLMDB::block_exists(const crypto::hash& h, uint64_t *height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_heights);
bool ret = false;
MDB_val_set(key, h);
auto get_result = mdb_cursor_get(m_cur_block_heights, (MDB_val *)&zerokval, &key, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
{
LOG_PRINT_L3("Block with hash " << epee::string_tools::pod_to_hex(h) << " not found in db");
}
else if (get_result)
throw0(DB_ERROR(lmdb_error("DB error attempting to fetch block index from hash", get_result).c_str()));
else
{
if (height)
{
const blk_height *bhp = (const blk_height *)key.mv_data;
*height = bhp->bh_height;
}
ret = true;
}
TXN_POSTFIX_RDONLY();
return ret;
}
block BlockchainLMDB::get_block(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
return get_block_from_height(get_block_height(h));
}
uint64_t BlockchainLMDB::get_block_height(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_heights);
MDB_val_set(key, h);
auto get_result = mdb_cursor_get(m_cur_block_heights, (MDB_val *)&zerokval, &key, MDB_GET_BOTH);
if (get_result == MDB_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"));
blk_height *bhp = (blk_height *)key.mv_data;
uint64_t ret = bhp->bh_height;
TXN_POSTFIX_RDONLY();
return ret;
}
block_header BlockchainLMDB::get_block_header(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
// block_header object is automatically cast from block object
return get_block(h);
}
block BlockchainLMDB::get_block_from_height(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(blocks);
MDB_val_copy<uint64_t> key(height);
MDB_val result;
auto get_result = mdb_cursor_get(m_cur_blocks, &key, &result, MDB_SET);
if (get_result == MDB_NOTFOUND)
{
throw0(BLOCK_DNE(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"));
blobdata bd;
bd.assign(reinterpret_cast<char*>(result.mv_data), result.mv_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"));
TXN_POSTFIX_RDONLY();
return b;
}
uint64_t BlockchainLMDB::get_block_timestamp(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_info);
MDB_val_set(result, height);
auto get_result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &result, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
{
throw0(BLOCK_DNE(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"));
mdb_block_info *bi = (mdb_block_info *)result.mv_data;
uint64_t ret = bi->bi_timestamp;
TXN_POSTFIX_RDONLY();
return ret;
}
uint64_t BlockchainLMDB::get_top_block_timestamp() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
uint64_t m_height = height();
// if no blocks, return 0
if (m_height == 0)
{
return 0;
}
return get_block_timestamp(m_height - 1);
}
size_t BlockchainLMDB::get_block_size(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_info);
MDB_val_set(result, height);
auto get_result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &result, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
{
throw0(BLOCK_DNE(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"));
mdb_block_info *bi = (mdb_block_info *)result.mv_data;
size_t ret = bi->bi_size;
TXN_POSTFIX_RDONLY();
return ret;
}
difficulty_type BlockchainLMDB::get_block_cumulative_difficulty(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__ << " height: " << height);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_info);
MDB_val_set(result, height);
auto get_result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &result, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
{
throw0(BLOCK_DNE(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"));
mdb_block_info *bi = (mdb_block_info *)result.mv_data;
difficulty_type ret = bi->bi_diff;
TXN_POSTFIX_RDONLY();
return ret;
}
difficulty_type BlockchainLMDB::get_block_difficulty(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __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 BlockchainLMDB::get_block_already_generated_coins(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_info);
MDB_val_set(result, height);
auto get_result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &result, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
{
throw0(BLOCK_DNE(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"));
mdb_block_info *bi = (mdb_block_info *)result.mv_data;
uint64_t ret = bi->bi_coins;
TXN_POSTFIX_RDONLY();
return ret;
}
crypto::hash BlockchainLMDB::get_block_hash_from_height(const uint64_t& height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(block_info);
MDB_val_set(result, height);
auto get_result = mdb_cursor_get(m_cur_block_info, (MDB_val *)&zerokval, &result, MDB_GET_BOTH);
if (get_result == MDB_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(lmdb_error("Error attempting to retrieve a block hash from the db: ", get_result).c_str()));
mdb_block_info *bi = (mdb_block_info *)result.mv_data;
crypto::hash ret = bi->bi_hash;
TXN_POSTFIX_RDONLY();
return ret;
}
std::vector<block> BlockchainLMDB::get_blocks_range(const uint64_t& h1, const uint64_t& h2) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __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> BlockchainLMDB::get_hashes_range(const uint64_t& h1, const uint64_t& h2) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __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 BlockchainLMDB::top_block_hash() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
uint64_t m_height = height();
if (m_height != 0)
{
return get_block_hash_from_height(m_height - 1);
}
return null_hash;
}
block BlockchainLMDB::get_top_block() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
uint64_t m_height = height();
if (m_height != 0)
{
return get_block_from_height(m_height - 1);
}
block b;
return b;
}
uint64_t BlockchainLMDB::height() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
int result;
// get current height
MDB_stat db_stats;
if ((result = mdb_stat(m_txn, m_blocks, &db_stats)))
throw0(DB_ERROR(lmdb_error("Failed to query m_blocks: ", result).c_str()));
return db_stats.ms_entries;
}
bool BlockchainLMDB::tx_exists(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(tx_indices);
RCURSOR(txs);
MDB_val_set(key, h);
bool tx_found = false;
TIME_MEASURE_START(time1);
auto get_result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &key, MDB_GET_BOTH);
if (get_result == 0)
tx_found = true;
else if (get_result != MDB_NOTFOUND)
throw0(DB_ERROR(lmdb_error(std::string("DB error attempting to fetch transaction index from hash ") + epee::string_tools::pod_to_hex(h) + ": ", get_result).c_str()));
// This isn't needed as part of the check. we're not checking consistency of db.
// get_result = mdb_cursor_get(m_cur_txs, &val_tx_index, &result, MDB_SET);
TIME_MEASURE_FINISH(time1);
time_tx_exists += time1;
TXN_POSTFIX_RDONLY();
if (! tx_found)
{
LOG_PRINT_L1("transaction with hash " << epee::string_tools::pod_to_hex(h) << " not found in db");
return false;
}
// Below not needed due to above comment.
// if (get_result == MDB_NOTFOUND)
// throw0(DB_ERROR(std::string("transaction with hash ").append(epee::string_tools::pod_to_hex(h)).append(" not found at index").c_str()));
// else if (get_result)
// throw0(DB_ERROR(lmdb_error(std::string("DB error attempting to fetch transaction ") + epee::string_tools::pod_to_hex(h) + " at index: ", get_result).c_str()));
return true;
}
bool BlockchainLMDB::tx_exists(const crypto::hash& h, uint64_t& tx_id) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(tx_indices);
MDB_val_set(v, h);
TIME_MEASURE_START(time1);
auto get_result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
TIME_MEASURE_FINISH(time1);
time_tx_exists += time1;
if (!get_result) {
txindex *tip = (txindex *)v.mv_data;
tx_id = tip->data.tx_id;
}
TXN_POSTFIX_RDONLY();
bool ret = false;
if (get_result == MDB_NOTFOUND)
{
LOG_PRINT_L1("transaction with hash " << epee::string_tools::pod_to_hex(h) << " not found in db");
}
else if (get_result)
throw0(DB_ERROR(lmdb_error("DB error attempting to fetch transaction from hash", get_result).c_str()));
else
ret = true;
return ret;
}
uint64_t BlockchainLMDB::get_tx_unlock_time(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(tx_indices);
MDB_val_set(v, h);
auto get_result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
throw1(TX_DNE(lmdb_error(std::string("tx data with hash ") + epee::string_tools::pod_to_hex(h) + " not found in db: ", get_result).c_str()));
else if (get_result)
throw0(DB_ERROR(lmdb_error("DB error attempting to fetch tx data from hash: ", get_result).c_str()));
txindex *tip = (txindex *)v.mv_data;
uint64_t ret = tip->data.unlock_time;
TXN_POSTFIX_RDONLY();
return ret;
}
transaction BlockchainLMDB::get_tx(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(tx_indices);
RCURSOR(txs);
MDB_val_set(v, h);
MDB_val result;
auto get_result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == 0)
{
txindex *tip = (txindex *)v.mv_data;
MDB_val_set(val_tx_id, tip->data.tx_id);
get_result = mdb_cursor_get(m_cur_txs, &val_tx_id, &result, MDB_SET);
}
if (get_result == MDB_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(lmdb_error("DB error attempting to fetch tx from hash", get_result).c_str()));
blobdata bd;
bd.assign(reinterpret_cast<char*>(result.mv_data), result.mv_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_POSTFIX_RDONLY();
return tx;
}
uint64_t BlockchainLMDB::get_tx_count() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
MDB_stat db_stats;
if (mdb_stat(m_txn, m_tx_indices, &db_stats))
throw0(DB_ERROR("Failed to query m_tx_indices"));
TXN_POSTFIX_RDONLY();
return db_stats.ms_entries;
}
std::vector<transaction> BlockchainLMDB::get_tx_list(const std::vector<crypto::hash>& hlist) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
std::vector<transaction> v;
for (auto& h : hlist)
{
v.push_back(get_tx(h));
}
return v;
}
uint64_t BlockchainLMDB::get_tx_block_height(const crypto::hash& h) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(tx_indices);
MDB_val_set(v, h);
auto get_result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
{
throw1(TX_DNE(std::string("tx_data_t with hash ").append(epee::string_tools::pod_to_hex(h)).append(" not found in db").c_str()));
}
else if (get_result)
throw0(DB_ERROR(lmdb_error("DB error attempting to fetch tx height from hash", get_result).c_str()));
txindex *tip = (txindex *)v.mv_data;
uint64_t ret = tip->data.block_id;
TXN_POSTFIX_RDONLY();
return ret;
}
uint64_t BlockchainLMDB::get_num_outputs(const uint64_t& amount) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(output_amounts);
MDB_val_copy<uint64_t> k(amount);
MDB_val v;
mdb_size_t num_elems = 0;
auto result = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_SET);
if (result == MDB_SUCCESS)
{
mdb_cursor_count(m_cur_output_amounts, &num_elems);
}
else if (result != MDB_NOTFOUND)
throw0(DB_ERROR("DB error attempting to get number of outputs of an amount"));
TXN_POSTFIX_RDONLY();
return num_elems;
}
// This is a lot harder now that we've removed the output_keys index
output_data_t BlockchainLMDB::get_output_key(const uint64_t &global_index) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__ << " (unused version - does nothing)");
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(output_txs);
RCURSOR(tx_indices);
RCURSOR(txs);
output_data_t od;
MDB_val_set(v, global_index);
auto get_result = mdb_cursor_get(m_cur_output_txs, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_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"));
outtx *ot = (outtx *)v.mv_data;
MDB_val_set(val_h, ot->tx_hash);
get_result = mdb_cursor_get(m_cur_tx_indices, (MDB_val *)&zerokval, &val_h, MDB_GET_BOTH);
if (get_result)
throw0(DB_ERROR(lmdb_error(std::string("DB error attempting to fetch transaction index from hash ") + epee::string_tools::pod_to_hex(ot->tx_hash) + ": ", get_result).c_str()));
txindex *tip = (txindex *)val_h.mv_data;
MDB_val_set(val_tx_id, tip->data.tx_id);
MDB_val result;
get_result = mdb_cursor_get(m_cur_txs, &val_tx_id, &result, MDB_SET);
if (get_result == MDB_NOTFOUND)
throw1(TX_DNE(std::string("tx with hash ").append(epee::string_tools::pod_to_hex(ot->tx_hash)).append(" not found in db").c_str()));
else if (get_result)
throw0(DB_ERROR(lmdb_error("DB error attempting to fetch tx from hash", get_result).c_str()));
blobdata bd;
bd.assign(reinterpret_cast<char*>(result.mv_data), result.mv_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"));
const tx_out tx_output = tx.vout[ot->local_index];
od.unlock_time = tip->data.unlock_time;
od.height = tip->data.block_id;
od.pubkey = boost::get<txout_to_key>(tx_output.target).key;
TXN_POSTFIX_RDONLY();
return od;
}
output_data_t BlockchainLMDB::get_output_key(const uint64_t& amount, const uint64_t& index)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(output_amounts);
MDB_val_set(k, amount);
MDB_val_set(v, index);
auto get_result = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get output pubkey by index, but key does not exist"));
else if (get_result)
throw0(DB_ERROR("Error attempting to retrieve an output pubkey from the db"));
output_data_t ret;
if (amount == 0)
{
const outkey *okp = (const outkey *)v.mv_data;
ret = okp->data;
}
else
{
const pre_rct_outkey *okp = (const pre_rct_outkey *)v.mv_data;
memcpy(&ret, &okp->data, sizeof(pre_rct_output_data_t));;
ret.commitment = rct::zeroCommit(amount);
}
TXN_POSTFIX_RDONLY();
return ret;
}
tx_out_index BlockchainLMDB::get_output_tx_and_index_from_global(const uint64_t& output_id) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(output_txs);
MDB_val_set(v, output_id);
auto get_result = mdb_cursor_get(m_cur_output_txs, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_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"));
outtx *ot = (outtx *)v.mv_data;
tx_out_index ret = tx_out_index(ot->tx_hash, ot->local_index);
TXN_POSTFIX_RDONLY();
return ret;
}
tx_out_index BlockchainLMDB::get_output_tx_and_index(const uint64_t& amount, const uint64_t& index) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
std::vector < uint64_t > offsets;
std::vector<tx_out_index> indices;
offsets.push_back(index);
get_output_tx_and_index(amount, offsets, indices);
if (!indices.size())
throw1(OUTPUT_DNE("Attempting to get an output index by amount and amount index, but amount not found"));
return indices[0];
}
std::vector<uint64_t> BlockchainLMDB::get_tx_amount_output_indices(const uint64_t tx_id) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(tx_outputs);
int result = 0;
MDB_val_set(k_tx_id, tx_id);
MDB_val v;
std::vector<uint64_t> amount_output_indices;
result = mdb_cursor_get(m_cur_tx_outputs, &k_tx_id, &v, MDB_SET);
if (result == MDB_NOTFOUND)
LOG_PRINT_L0("WARNING: Unexpected: tx has no amount indices stored in "
"tx_outputs, but it should have an empty entry even if it's a tx without "
"outputs");
else if (result)
throw0(DB_ERROR(lmdb_error("DB error attempting to get data for tx_outputs[tx_index]", result).c_str()));
const uint64_t* indices = (const uint64_t*)v.mv_data;
int num_outputs = v.mv_size / sizeof(uint64_t);
amount_output_indices.reserve(num_outputs);
for (int i = 0; i < num_outputs; ++i)
{
// LOG_PRINT_L0("amount output index[" << 2*i << "]" << ": " << paired_indices[2*i] << " global output index: " << paired_indices[2*i+1]);
amount_output_indices.push_back(indices[i]);
}
indices = nullptr;
TXN_POSTFIX_RDONLY();
return amount_output_indices;
}
bool BlockchainLMDB::has_key_image(const crypto::key_image& img) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
bool ret;
TXN_PREFIX_RDONLY();
RCURSOR(spent_keys);
MDB_val k = {sizeof(img), (void *)&img};
ret = (mdb_cursor_get(m_cur_spent_keys, (MDB_val *)&zerokval, &k, MDB_GET_BOTH) == 0);
TXN_POSTFIX_RDONLY();
return ret;
}
bool BlockchainLMDB::for_all_key_images(std::function<bool(const crypto::key_image&)> f) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(spent_keys);
MDB_val k, v;
bool ret = true;
k = zerokval;
MDB_cursor_op op = MDB_FIRST;
while (1)
{
int ret = mdb_cursor_get(m_cur_spent_keys, &k, &v, op);
op = MDB_NEXT;
if (ret == MDB_NOTFOUND)
break;
if (ret < 0)
throw0(DB_ERROR("Failed to enumerate key images"));
const crypto::key_image k_image = *(const crypto::key_image*)v.mv_data;
if (!f(k_image)) {
ret = false;
break;
}
}
TXN_POSTFIX_RDONLY();
return ret;
}
bool BlockchainLMDB::for_all_blocks(std::function<bool(uint64_t, const crypto::hash&, const cryptonote::block&)> f) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(blocks);
MDB_val k;
MDB_val v;
bool ret = true;
MDB_cursor_op op = MDB_FIRST;
while (1)
{
int ret = mdb_cursor_get(m_cur_blocks, &k, &v, op);
op = MDB_NEXT;
if (ret == MDB_NOTFOUND)
break;
if (ret)
throw0(DB_ERROR("Failed to enumerate blocks"));
uint64_t height = *(const uint64_t*)k.mv_data;
blobdata bd;
bd.assign(reinterpret_cast<char*>(v.mv_data), v.mv_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"));
crypto::hash hash;
if (!get_block_hash(b, hash))
throw0(DB_ERROR("Failed to get block hash from blob retrieved from the db"));
if (!f(height, hash, b)) {
ret = false;
break;
}
}
TXN_POSTFIX_RDONLY();
return ret;
}
bool BlockchainLMDB::for_all_transactions(std::function<bool(const crypto::hash&, const cryptonote::transaction&)> f) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(txs);
RCURSOR(tx_indices);
MDB_val k;
MDB_val v;
bool ret = true;
MDB_cursor_op op = MDB_FIRST;
while (1)
{
int ret = mdb_cursor_get(m_cur_tx_indices, &k, &v, op);
op = MDB_NEXT;
if (ret == MDB_NOTFOUND)
break;
if (ret)
throw0(DB_ERROR(lmdb_error("Failed to enumerate transactions: ", ret).c_str()));
txindex *ti = (txindex *)v.mv_data;
const crypto::hash hash = ti->key;
k.mv_data = (void *)&ti->data.tx_id;
k.mv_size = sizeof(ti->data.tx_id);
ret = mdb_cursor_get(m_cur_txs, &k, &v, MDB_SET);
if (ret == MDB_NOTFOUND)
break;
if (ret)
throw0(DB_ERROR(lmdb_error("Failed to enumerate transactions: ", ret).c_str()));
blobdata bd;
bd.assign(reinterpret_cast<char*>(v.mv_data), v.mv_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"));
if (!f(hash, tx)) {
ret = false;
break;
}
}
TXN_POSTFIX_RDONLY();
return ret;
}
bool BlockchainLMDB::for_all_outputs(std::function<bool(uint64_t amount, const crypto::hash &tx_hash, size_t tx_idx)> f) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(output_amounts);
MDB_val k;
MDB_val v;
bool ret = true;
MDB_cursor_op op = MDB_FIRST;
while (1)
{
int ret = mdb_cursor_get(m_cur_output_amounts, &k, &v, op);
op = MDB_NEXT;
if (ret == MDB_NOTFOUND)
break;
if (ret)
throw0(DB_ERROR("Failed to enumerate outputs"));
uint64_t amount = *(const uint64_t*)k.mv_data;
outkey *ok = (outkey *)v.mv_data;
tx_out_index toi = get_output_tx_and_index_from_global(ok->output_id);
if (!f(amount, toi.first, toi.second)) {
ret = false;
break;
}
}
TXN_POSTFIX_RDONLY();
return ret;
}
// batch_num_blocks: (optional) Used to check if resize needed before batch transaction starts.
bool BlockchainLMDB::batch_start(uint64_t batch_num_blocks)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (! m_batch_transactions)
throw0(DB_ERROR("batch transactions not enabled"));
if (m_batch_active)
return false;
if (m_write_batch_txn != nullptr)
return false;
if (m_write_txn)
throw0(DB_ERROR("batch transaction attempted, but m_write_txn already in use"));
check_open();
m_writer = boost::this_thread::get_id();
check_and_resize_for_batch(batch_num_blocks);
m_write_batch_txn = new mdb_txn_safe();
// NOTE: need to make sure it's destroyed properly when done
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, *m_write_batch_txn))
{
delete m_write_batch_txn;
m_write_batch_txn = nullptr;
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
// indicates this transaction is for batch transactions, but not whether it's
// active
m_write_batch_txn->m_batch_txn = true;
m_write_txn = m_write_batch_txn;
m_batch_active = true;
memset(&m_wcursors, 0, sizeof(m_wcursors));
LOG_PRINT_L3("batch transaction: begin");
return true;
}
void BlockchainLMDB::batch_commit()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (! m_batch_transactions)
throw0(DB_ERROR("batch transactions not enabled"));
if (! m_batch_active)
throw0(DB_ERROR("batch transaction not in progress"));
if (m_write_batch_txn == nullptr)
throw0(DB_ERROR("batch transaction not in progress"));
if (m_writer != boost::this_thread::get_id())
return; // batch txn owned by other thread
check_open();
LOG_PRINT_L3("batch transaction: committing...");
TIME_MEASURE_START(time1);
m_write_txn->commit();
TIME_MEASURE_FINISH(time1);
time_commit1 += time1;
LOG_PRINT_L3("batch transaction: committed");
m_write_txn = nullptr;
delete m_write_batch_txn;
m_write_batch_txn = nullptr;
memset(&m_wcursors, 0, sizeof(m_wcursors));
}
void BlockchainLMDB::batch_stop()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (! m_batch_transactions)
throw0(DB_ERROR("batch transactions not enabled"));
if (! m_batch_active)
throw0(DB_ERROR("batch transaction not in progress"));
if (m_write_batch_txn == nullptr)
throw0(DB_ERROR("batch transaction not in progress"));
if (m_writer != boost::this_thread::get_id())
return; // batch txn owned by other thread
check_open();
LOG_PRINT_L3("batch transaction: committing...");
TIME_MEASURE_START(time1);
m_write_txn->commit();
TIME_MEASURE_FINISH(time1);
time_commit1 += time1;
// for destruction of batch transaction
m_write_txn = nullptr;
delete m_write_batch_txn;
m_write_batch_txn = nullptr;
m_batch_active = false;
memset(&m_wcursors, 0, sizeof(m_wcursors));
LOG_PRINT_L3("batch transaction: end");
}
void BlockchainLMDB::batch_abort()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (! m_batch_transactions)
throw0(DB_ERROR("batch transactions not enabled"));
if (! m_batch_active)
throw0(DB_ERROR("batch transaction not in progress"));
if (m_writer != boost::this_thread::get_id())
return; // batch txn owned by other thread
check_open();
// for destruction of batch transaction
m_write_txn = nullptr;
// explicitly call in case mdb_env_close() (BlockchainLMDB::close()) called before BlockchainLMDB destructor called.
m_write_batch_txn->abort();
delete m_write_batch_txn;
m_write_batch_txn = nullptr;
m_batch_active = false;
memset(&m_wcursors, 0, sizeof(m_wcursors));
LOG_PRINT_L3("batch transaction: aborted");
}
void BlockchainLMDB::set_batch_transactions(bool batch_transactions)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if ((batch_transactions) && (m_batch_transactions))
{
LOG_PRINT_L0("WARNING: batch transaction mode already enabled, but asked to enable batch mode");
}
m_batch_transactions = batch_transactions;
LOG_PRINT_L3("batch transactions " << (m_batch_transactions ? "enabled" : "disabled"));
}
// return true if we started the txn, false if already started
bool BlockchainLMDB::block_rtxn_start(MDB_txn **mtxn, mdb_txn_cursors **mcur) const
{
bool ret = false;
if (m_write_txn && m_writer == boost::this_thread::get_id()) {
*mtxn = m_write_txn->m_txn;
*mcur = (mdb_txn_cursors *)&m_wcursors;
return ret;
}
if (!m_tinfo.get())
{
m_tinfo.reset(new mdb_threadinfo);
memset(&m_tinfo->m_ti_rcursors, 0, sizeof(m_tinfo->m_ti_rcursors));
memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, &m_tinfo->m_ti_rtxn))
throw0(DB_ERROR_TXN_START(lmdb_error("Failed to create a read transaction for the db: ", mdb_res).c_str()));
ret = true;
} else if (!m_tinfo->m_ti_rflags.m_rf_txn)
{
if (auto mdb_res = mdb_txn_renew(m_tinfo->m_ti_rtxn))
throw0(DB_ERROR_TXN_START(lmdb_error("Failed to renew a read transaction for the db: ", mdb_res).c_str()));
ret = true;
}
if (ret)
m_tinfo->m_ti_rflags.m_rf_txn = true;
*mtxn = m_tinfo->m_ti_rtxn;
*mcur = &m_tinfo->m_ti_rcursors;
if (ret)
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
return ret;
}
void BlockchainLMDB::block_rtxn_stop() const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
mdb_txn_reset(m_tinfo->m_ti_rtxn);
memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
}
void BlockchainLMDB::block_txn_start(bool readonly)
{
if (readonly)
{
bool didit = false;
if (m_write_txn && m_writer == boost::this_thread::get_id())
return;
if (!m_tinfo.get())
{
m_tinfo.reset(new mdb_threadinfo);
memset(&m_tinfo->m_ti_rcursors, 0, sizeof(m_tinfo->m_ti_rcursors));
memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, &m_tinfo->m_ti_rtxn))
throw0(DB_ERROR_TXN_START(lmdb_error("Failed to create a read transaction for the db: ", mdb_res).c_str()));
didit = true;
} else if (!m_tinfo->m_ti_rflags.m_rf_txn)
{
if (auto mdb_res = mdb_txn_renew(m_tinfo->m_ti_rtxn))
throw0(DB_ERROR_TXN_START(lmdb_error("Failed to renew a read transaction for the db: ", mdb_res).c_str()));
didit = true;
}
if (didit)
{
m_tinfo->m_ti_rflags.m_rf_txn = true;
LOG_PRINT_L3("BlockchainLMDB::" << __func__ << " RO");
}
return;
}
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
// Distinguish the exceptions here from exceptions that would be thrown while
// using the txn and committing it.
//
// If an exception is thrown in this setup, we don't want the caller to catch
// it and proceed as if there were an existing write txn, such as trying to
// call block_txn_abort(). It also indicates a serious issue which will
// probably be thrown up another layer.
if (! m_batch_active && m_write_txn)
throw0(DB_ERROR_TXN_START((std::string("Attempted to start new write txn when write txn already exists in ")+__FUNCTION__).c_str()));
if (! m_batch_active)
{
m_writer = boost::this_thread::get_id();
m_write_txn = new mdb_txn_safe();
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, *m_write_txn))
{
delete m_write_txn;
m_write_txn = nullptr;
throw0(DB_ERROR_TXN_START(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
memset(&m_wcursors, 0, sizeof(m_wcursors));
}
}
void BlockchainLMDB::block_txn_stop()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (m_write_txn && m_writer == boost::this_thread::get_id())
{
if (! m_batch_active)
{
TIME_MEASURE_START(time1);
m_write_txn->commit();
TIME_MEASURE_FINISH(time1);
time_commit1 += time1;
delete m_write_txn;
m_write_txn = nullptr;
memset(&m_wcursors, 0, sizeof(m_wcursors));
}
}
else if (m_tinfo->m_ti_rtxn)
{
mdb_txn_reset(m_tinfo->m_ti_rtxn);
memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
}
}
void BlockchainLMDB::block_txn_abort()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
if (m_write_txn && m_writer == boost::this_thread::get_id())
{
if (! m_batch_active)
{
delete m_write_txn;
m_write_txn = nullptr;
memset(&m_wcursors, 0, sizeof(m_wcursors));
}
}
else if (m_tinfo->m_ti_rtxn)
{
mdb_txn_reset(m_tinfo->m_ti_rtxn);
memset(&m_tinfo->m_ti_rflags, 0, sizeof(m_tinfo->m_ti_rflags));
}
else
{
// This would probably mean an earlier exception was caught, but then we
// proceeded further than we should have.
throw0(DB_ERROR((std::string("BlockchainLMDB::") + __func__ +
std::string(": block-level DB transaction abort called when write txn doesn't exist")
).c_str()));
}
}
uint64_t BlockchainLMDB::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("BlockchainLMDB::" << __func__);
check_open();
uint64_t m_height = height();
if (m_height % 1000 == 0)
{
// for batch mode, DB resize check is done at start of batch transaction
if (! m_batch_active && need_resize())
{
LOG_PRINT_L0("LMDB memory map needs to be resized, doing that now.");
do_resize();
}
}
uint64_t num_txs = m_num_txs;
uint64_t num_outputs = m_num_outputs;
try
{
BlockchainDB::add_block(blk, block_size, cumulative_difficulty, coins_generated, txs);
}
catch (DB_ERROR_TXN_START& e)
{
throw;
}
catch (...)
{
m_num_txs = num_txs;
m_num_outputs = num_outputs;
block_txn_abort();
throw;
}
return ++m_height;
}
void BlockchainLMDB::pop_block(block& blk, std::vector<transaction>& txs)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
block_txn_start(false);
uint64_t num_txs = m_num_txs;
uint64_t num_outputs = m_num_outputs;
try
{
BlockchainDB::pop_block(blk, txs);
block_txn_stop();
}
catch (...)
{
m_num_txs = num_txs;
m_num_outputs = num_outputs;
block_txn_abort();
throw;
}
}
void BlockchainLMDB::get_output_tx_and_index_from_global(const std::vector<uint64_t> &global_indices,
std::vector<tx_out_index> &tx_out_indices) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
tx_out_indices.clear();
TXN_PREFIX_RDONLY();
RCURSOR(output_txs);
for (const uint64_t &output_id : global_indices)
{
MDB_val_set(v, output_id);
auto get_result = mdb_cursor_get(m_cur_output_txs, (MDB_val *)&zerokval, &v, MDB_GET_BOTH);
if (get_result == MDB_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"));
outtx *ot = (outtx *)v.mv_data;
auto result = tx_out_index(ot->tx_hash, ot->local_index);
tx_out_indices.push_back(result);
}
TXN_POSTFIX_RDONLY();
}
void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<uint64_t> &offsets, std::vector<output_data_t> &outputs)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
TIME_MEASURE_START(db3);
check_open();
outputs.clear();
TXN_PREFIX_RDONLY();
RCURSOR(output_amounts);
MDB_val_set(k, amount);
for (const uint64_t &index : offsets)
{
MDB_val_set(v, index);
auto get_result = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE((std::string("Attempting to get output pubkey by global index (amount ") + boost::lexical_cast<std::string>(amount) + ", index " + boost::lexical_cast<std::string>(index) + ", count " + boost::lexical_cast<std::string>(get_num_outputs(amount)) + "), but key does not exist").c_str()));
else if (get_result)
throw0(DB_ERROR(lmdb_error("Error attempting to retrieve an output pubkey from the db", get_result).c_str()));
output_data_t data;
if (amount == 0)
{
const outkey *okp = (const outkey *)v.mv_data;
data = okp->data;
}
else
{
const pre_rct_outkey *okp = (const pre_rct_outkey *)v.mv_data;
memcpy(&data, &okp->data, sizeof(pre_rct_output_data_t));
data.commitment = rct::zeroCommit(amount);
}
outputs.push_back(data);
}
TXN_POSTFIX_RDONLY();
TIME_MEASURE_FINISH(db3);
LOG_PRINT_L3("db3: " << db3);
}
void BlockchainLMDB::get_output_tx_and_index(const uint64_t& amount, const std::vector<uint64_t> &offsets, std::vector<tx_out_index> &indices) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
indices.clear();
std::vector <uint64_t> tx_indices;
TXN_PREFIX_RDONLY();
RCURSOR(output_amounts);
MDB_val_set(k, amount);
for (const uint64_t &index : offsets)
{
MDB_val_set(v, index);
auto get_result = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_GET_BOTH);
if (get_result == MDB_NOTFOUND)
throw1(OUTPUT_DNE("Attempting to get output by index, but key does not exist"));
else if (get_result)
throw0(DB_ERROR(lmdb_error("Error attempting to retrieve an output from the db", get_result).c_str()));
const outkey *okp = (const outkey *)v.mv_data;
tx_indices.push_back(okp->output_id);
}
TIME_MEASURE_START(db3);
if(tx_indices.size() > 0)
{
get_output_tx_and_index_from_global(tx_indices, indices);
}
TIME_MEASURE_FINISH(db3);
LOG_PRINT_L3("db3: " << db3);
}
std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> BlockchainLMDB::get_output_histogram(const std::vector<uint64_t> &amounts, bool unlocked, uint64_t recent_cutoff) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(output_amounts);
std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>> histogram;
MDB_val k;
MDB_val v;
if (amounts.empty())
{
MDB_cursor_op op = MDB_FIRST;
while (1)
{
int ret = mdb_cursor_get(m_cur_output_amounts, &k, &v, op);
op = MDB_NEXT_NODUP;
if (ret == MDB_NOTFOUND)
break;
if (ret)
throw0(DB_ERROR(lmdb_error("Failed to enumerate outputs: ", ret).c_str()));
mdb_size_t num_elems = 0;
mdb_cursor_count(m_cur_output_amounts, &num_elems);
uint64_t amount = *(const uint64_t*)k.mv_data;
histogram[amount] = std::make_tuple(num_elems, 0, 0);
}
}
else
{
for (const auto &amount: amounts)
{
MDB_val_copy<uint64_t> k(amount);
int ret = mdb_cursor_get(m_cur_output_amounts, &k, &v, MDB_SET);
if (ret == MDB_NOTFOUND)
{
histogram[amount] = std::make_tuple(0, 0, 0);
}
else if (ret == MDB_SUCCESS)
{
mdb_size_t num_elems = 0;
mdb_cursor_count(m_cur_output_amounts, &num_elems);
histogram[amount] = std::make_tuple(num_elems, 0, 0);
}
else
{
throw0(DB_ERROR(lmdb_error("Failed to enumerate outputs: ", ret).c_str()));
}
}
}
if (unlocked || recent_cutoff > 0) {
const uint64_t blockchain_height = height();
for (std::map<uint64_t, std::tuple<uint64_t, uint64_t, uint64_t>>::iterator i = histogram.begin(); i != histogram.end(); ++i) {
uint64_t amount = i->first;
uint64_t num_elems = std::get<0>(i->second);
while (num_elems > 0) {
const tx_out_index toi = get_output_tx_and_index(amount, num_elems - 1);
const uint64_t height = get_tx_block_height(toi.first);
if (height + CRYPTONOTE_DEFAULT_TX_SPENDABLE_AGE <= blockchain_height)
break;
--num_elems;
}
// modifying second does not invalidate the iterator
std::get<1>(i->second) = num_elems;
if (recent_cutoff > 0)
{
uint64_t recent = 0;
while (num_elems > 0) {
const tx_out_index toi = get_output_tx_and_index(amount, num_elems - 1);
const uint64_t height = get_tx_block_height(toi.first);
const uint64_t ts = get_block_timestamp(height);
if (ts < recent_cutoff)
break;
--num_elems;
++recent;
}
// modifying second does not invalidate the iterator
std::get<2>(i->second) = recent;
}
}
}
TXN_POSTFIX_RDONLY();
return histogram;
}
void BlockchainLMDB::check_hard_fork_info()
{
}
void BlockchainLMDB::drop_hard_fork_info()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX(0);
mdb_drop(*txn_ptr, m_hf_starting_heights, 1);
mdb_drop(*txn_ptr, m_hf_versions, 1);
TXN_POSTFIX_SUCCESS();
}
void BlockchainLMDB::set_hard_fork_version(uint64_t height, uint8_t version)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_BLOCK_PREFIX(0);
MDB_val_copy<uint64_t> val_key(height);
MDB_val_copy<uint8_t> val_value(version);
int result;
result = mdb_put(*txn_ptr, m_hf_versions, &val_key, &val_value, MDB_APPEND);
if (result == MDB_KEYEXIST)
result = mdb_put(*txn_ptr, m_hf_versions, &val_key, &val_value, 0);
if (result)
throw1(DB_ERROR(lmdb_error("Error adding hard fork version to db transaction: ", result).c_str()));
TXN_BLOCK_POSTFIX_SUCCESS();
}
uint8_t BlockchainLMDB::get_hard_fork_version(uint64_t height) const
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
TXN_PREFIX_RDONLY();
RCURSOR(hf_versions);
MDB_val_copy<uint64_t> val_key(height);
MDB_val val_ret;
auto result = mdb_cursor_get(m_cur_hf_versions, &val_key, &val_ret, MDB_SET);
if (result == MDB_NOTFOUND || result)
throw0(DB_ERROR(lmdb_error("Error attempting to retrieve a hard fork version at height " + boost::lexical_cast<std::string>(height) + " from the db: ", result).c_str()));
uint8_t ret = *(const uint8_t*)val_ret.mv_data;
TXN_POSTFIX_RDONLY();
return ret;
}
bool BlockchainLMDB::is_read_only() const
{
unsigned int flags;
auto result = mdb_env_get_flags(m_env, &flags);
if (result)
throw0(DB_ERROR(lmdb_error("Error getting database environment info: ", result).c_str()));
if (flags & MDB_RDONLY)
return true;
return false;
}
void BlockchainLMDB::fixup()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
// Always call parent as well
BlockchainDB::fixup();
}
#define RENAME_DB(name) \
k.mv_data = (void *)name; \
k.mv_size = sizeof(name)-1; \
result = mdb_cursor_open(txn, 1, &c_cur); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for " name ": ", result).c_str())); \
result = mdb_cursor_get(c_cur, &k, NULL, MDB_SET_KEY); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to get DB record for " name ": ", result).c_str())); \
ptr = (char *)k.mv_data; \
ptr[sizeof(name)-2] = 's'
#define LOGIF(y) if (y <= epee::log_space::log_singletone::get_log_detalisation_level())
void BlockchainLMDB::migrate_0_1()
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
uint64_t i, z, m_height;
int result;
mdb_txn_safe txn(false);
MDB_val k, v;
char *ptr;
LOG_PRINT_YELLOW("Migrating blockchain from DB version 0 to 1 - this may take a while:", LOG_LEVEL_0);
LOG_PRINT_L0("updating blocks, hf_versions, outputs, txs, and spent_keys tables...");
do {
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
MDB_stat db_stats;
if ((result = mdb_stat(txn, m_blocks, &db_stats)))
throw0(DB_ERROR(lmdb_error("Failed to query m_blocks: ", result).c_str()));
m_height = db_stats.ms_entries;
LOG_PRINT_L0("Total number of blocks: " << m_height);
LOG_PRINT_L1("block migration will update block_heights, block_info, and hf_versions...");
LOG_PRINT_L1("migrating block_heights:");
MDB_dbi o_heights;
unsigned int flags;
result = mdb_dbi_flags(txn, m_block_heights, &flags);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to retrieve block_heights flags: ", result).c_str()));
/* if the flags are what we expect, this table has already been migrated */
if ((flags & (MDB_INTEGERKEY|MDB_DUPSORT|MDB_DUPFIXED)) == (MDB_INTEGERKEY|MDB_DUPSORT|MDB_DUPFIXED)) {
txn.abort();
LOG_PRINT_L1(" block_heights already migrated");
break;
}
/* the block_heights table name is the same but the old version and new version
* have incompatible DB flags. Create a new table with the right flags. We want
* the name to be similar to the old name so that it will occupy the same location
* in the DB.
*/
o_heights = m_block_heights;
lmdb_db_open(txn, "block_heightr", MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for block_heightr");
mdb_set_dupsort(txn, m_block_heights, compare_hash32);
MDB_cursor *c_old, *c_cur;
blk_height bh;
MDB_val_set(nv, bh);
/* old table was k(hash), v(height).
* new table is DUPFIXED, k(zeroval), v{hash, height}.
*/
i = 0;
z = m_height;
while(1) {
if (!(i % 2000)) {
if (i) {
LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush;
}
txn.commit();
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
}
result = mdb_cursor_open(txn, m_block_heights, &c_cur);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_heightr: ", result).c_str()));
result = mdb_cursor_open(txn, o_heights, &c_old);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_heights: ", result).c_str()));
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_block_heights, &ms);
i = ms.ms_entries;
}
}
result = mdb_cursor_get(c_old, &k, &v, MDB_NEXT);
if (result == MDB_NOTFOUND) {
txn.commit();
break;
}
else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_heights: ", result).c_str()));
bh.bh_hash = *(crypto::hash *)k.mv_data;
bh.bh_height = *(uint64_t *)v.mv_data;
result = mdb_cursor_put(c_cur, (MDB_val *)&zerokval, &nv, MDB_APPENDDUP);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into block_heightr: ", result).c_str()));
/* we delete the old records immediately, so the overall DB and mapsize should not grow.
* This is a little slower than just letting mdb_drop() delete it all at the end, but
* it saves a significant amount of disk space.
*/
result = mdb_cursor_del(c_old, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_heights: ", result).c_str()));
i++;
}
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
/* Delete the old table */
result = mdb_drop(txn, o_heights, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete old block_heights table: ", result).c_str()));
RENAME_DB("block_heightr");
/* close and reopen to get old dbi slot back */
mdb_dbi_close(m_env, m_block_heights);
lmdb_db_open(txn, "block_heights", MDB_INTEGERKEY | MDB_DUPSORT | MDB_DUPFIXED, m_block_heights, "Failed to open db handle for block_heights");
mdb_set_dupsort(txn, m_block_heights, compare_hash32);
txn.commit();
} while(0);
/* old tables are k(height), v(value).
* new table is DUPFIXED, k(zeroval), v{height, values...}.
*/
do {
LOG_PRINT_L1("migrating block info:");
MDB_dbi coins;
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_dbi_open(txn, "block_coins", 0, &coins);
if (result == MDB_NOTFOUND) {
txn.abort();
LOG_PRINT_L1(" block_info already migrated");
break;
}
MDB_dbi diffs, hashes, sizes, timestamps;
mdb_block_info bi;
MDB_val_set(nv, bi);
lmdb_db_open(txn, "block_diffs", 0, diffs, "Failed to open db handle for block_diffs");
lmdb_db_open(txn, "block_hashes", 0, hashes, "Failed to open db handle for block_hashes");
lmdb_db_open(txn, "block_sizes", 0, sizes, "Failed to open db handle for block_sizes");
lmdb_db_open(txn, "block_timestamps", 0, timestamps, "Failed to open db handle for block_timestamps");
MDB_cursor *c_cur, *c_coins, *c_diffs, *c_hashes, *c_sizes, *c_timestamps;
i = 0;
z = m_height;
while(1) {
MDB_val k, v;
if (!(i % 2000)) {
if (i) {
LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush;
}
txn.commit();
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
}
result = mdb_cursor_open(txn, m_block_info, &c_cur);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_info: ", result).c_str()));
result = mdb_cursor_open(txn, coins, &c_coins);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_coins: ", result).c_str()));
result = mdb_cursor_open(txn, diffs, &c_diffs);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_diffs: ", result).c_str()));
result = mdb_cursor_open(txn, hashes, &c_hashes);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_hashes: ", result).c_str()));
result = mdb_cursor_open(txn, sizes, &c_sizes);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_coins: ", result).c_str()));
result = mdb_cursor_open(txn, timestamps, &c_timestamps);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for block_timestamps: ", result).c_str()));
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_block_info, &ms);
i = ms.ms_entries;
}
}
result = mdb_cursor_get(c_coins, &k, &v, MDB_NEXT);
if (result == MDB_NOTFOUND) {
break;
} else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_coins: ", result).c_str()));
bi.bi_height = *(uint64_t *)k.mv_data;
bi.bi_coins = *(uint64_t *)v.mv_data;
result = mdb_cursor_get(c_diffs, &k, &v, MDB_NEXT);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_diffs: ", result).c_str()));
bi.bi_diff = *(uint64_t *)v.mv_data;
result = mdb_cursor_get(c_hashes, &k, &v, MDB_NEXT);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_hashes: ", result).c_str()));
bi.bi_hash = *(crypto::hash *)v.mv_data;
result = mdb_cursor_get(c_sizes, &k, &v, MDB_NEXT);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_sizes: ", result).c_str()));
if (v.mv_size == sizeof(uint32_t))
bi.bi_size = *(uint32_t *)v.mv_data;
else
bi.bi_size = *(uint64_t *)v.mv_data; // this is a 32/64 compat bug in version 0
result = mdb_cursor_get(c_timestamps, &k, &v, MDB_NEXT);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from block_timestamps: ", result).c_str()));
bi.bi_timestamp = *(uint64_t *)v.mv_data;
result = mdb_cursor_put(c_cur, (MDB_val *)&zerokval, &nv, MDB_APPENDDUP);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into block_info: ", result).c_str()));
result = mdb_cursor_del(c_coins, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_coins: ", result).c_str()));
result = mdb_cursor_del(c_diffs, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_diffs: ", result).c_str()));
result = mdb_cursor_del(c_hashes, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_hashes: ", result).c_str()));
result = mdb_cursor_del(c_sizes, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_sizes: ", result).c_str()));
result = mdb_cursor_del(c_timestamps, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from block_timestamps: ", result).c_str()));
i++;
}
mdb_cursor_close(c_timestamps);
mdb_cursor_close(c_sizes);
mdb_cursor_close(c_hashes);
mdb_cursor_close(c_diffs);
mdb_cursor_close(c_coins);
result = mdb_drop(txn, timestamps, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete block_timestamps from the db: ", result).c_str()));
result = mdb_drop(txn, sizes, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete block_sizes from the db: ", result).c_str()));
result = mdb_drop(txn, hashes, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete block_hashes from the db: ", result).c_str()));
result = mdb_drop(txn, diffs, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete block_diffs from the db: ", result).c_str()));
result = mdb_drop(txn, coins, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete block_coins from the db: ", result).c_str()));
txn.commit();
} while(0);
do {
LOG_PRINT_L1("migrating hf_versions:");
MDB_dbi o_hfv;
unsigned int flags;
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_dbi_flags(txn, m_hf_versions, &flags);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to retrieve hf_versions flags: ", result).c_str()));
/* if the flags are what we expect, this table has already been migrated */
if (flags & MDB_INTEGERKEY) {
txn.abort();
LOG_PRINT_L1(" hf_versions already migrated");
break;
}
/* the hf_versions table name is the same but the old version and new version
* have incompatible DB flags. Create a new table with the right flags.
*/
o_hfv = m_hf_versions;
lmdb_db_open(txn, "hf_versionr", MDB_INTEGERKEY | MDB_CREATE, m_hf_versions, "Failed to open db handle for hf_versionr");
MDB_cursor *c_old, *c_cur;
i = 0;
z = m_height;
while(1) {
if (!(i % 2000)) {
if (i) {
LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush;
}
txn.commit();
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
}
result = mdb_cursor_open(txn, m_hf_versions, &c_cur);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for spent_keyr: ", result).c_str()));
result = mdb_cursor_open(txn, o_hfv, &c_old);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for spent_keys: ", result).c_str()));
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_hf_versions, &ms);
i = ms.ms_entries;
}
}
result = mdb_cursor_get(c_old, &k, &v, MDB_NEXT);
if (result == MDB_NOTFOUND) {
txn.commit();
break;
}
else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from hf_versions: ", result).c_str()));
result = mdb_cursor_put(c_cur, &k, &v, MDB_APPEND);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into hf_versionr: ", result).c_str()));
result = mdb_cursor_del(c_old, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from hf_versions: ", result).c_str()));
i++;
}
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
/* Delete the old table */
result = mdb_drop(txn, o_hfv, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete old hf_versions table: ", result).c_str()));
RENAME_DB("hf_versionr");
mdb_dbi_close(m_env, m_hf_versions);
lmdb_db_open(txn, "hf_versions", MDB_INTEGERKEY, m_hf_versions, "Failed to open db handle for hf_versions");
txn.commit();
} while(0);
do {
LOG_PRINT_L1("deleting old indices:");
/* Delete all other tables, we're just going to recreate them */
MDB_dbi dbi;
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_dbi_open(txn, "tx_unlocks", 0, &dbi);
if (result == MDB_NOTFOUND) {
txn.abort();
LOG_PRINT_L1(" old indices already deleted");
break;
}
txn.abort();
#define DELETE_DB(x) do { \
LOG_PRINT_L1(" " x ":"); \
result = mdb_txn_begin(m_env, NULL, 0, txn); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str())); \
result = mdb_dbi_open(txn, x, 0, &dbi); \
if (!result) { \
result = mdb_drop(txn, dbi, 1); \
if (result) \
throw0(DB_ERROR(lmdb_error("Failed to delete " x ": ", result).c_str())); \
txn.commit(); \
} } while(0)
DELETE_DB("tx_heights");
DELETE_DB("output_txs");
DELETE_DB("output_indices");
DELETE_DB("output_keys");
DELETE_DB("spent_keys");
DELETE_DB("output_amounts");
DELETE_DB("tx_outputs");
DELETE_DB("tx_unlocks");
/* reopen new DBs with correct flags */
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
lmdb_db_open(txn, LMDB_OUTPUT_TXS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_output_txs, "Failed to open db handle for m_output_txs");
mdb_set_dupsort(txn, m_output_txs, compare_uint64);
lmdb_db_open(txn, LMDB_TX_OUTPUTS, MDB_INTEGERKEY | MDB_CREATE, m_tx_outputs, "Failed to open db handle for m_tx_outputs");
lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for m_spent_keys");
mdb_set_dupsort(txn, m_spent_keys, compare_hash32);
lmdb_db_open(txn, LMDB_OUTPUT_AMOUNTS, MDB_INTEGERKEY | MDB_DUPSORT | MDB_DUPFIXED | MDB_CREATE, m_output_amounts, "Failed to open db handle for m_output_amounts");
mdb_set_dupsort(txn, m_output_amounts, compare_uint64);
txn.commit();
m_num_txs = 0;
m_num_outputs = 0;
} while(0);
do {
LOG_PRINT_L1("migrating txs and outputs:");
unsigned int flags;
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_dbi_flags(txn, m_txs, &flags);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to retrieve txs flags: ", result).c_str()));
/* if the flags are what we expect, this table has already been migrated */
if (flags & MDB_INTEGERKEY) {
txn.abort();
LOG_PRINT_L1(" txs already migrated");
break;
}
MDB_dbi o_txs;
blobdata bd;
block b;
MDB_val hk;
o_txs = m_txs;
mdb_set_compare(txn, o_txs, compare_hash32);
lmdb_db_open(txn, "txr", MDB_INTEGERKEY | MDB_CREATE, m_txs, "Failed to open db handle for txr");
txn.commit();
MDB_cursor *c_blocks, *c_txs, *c_props, *c_cur;
i = 0;
z = m_height;
hk.mv_size = sizeof(crypto::hash);
set_batch_transactions(true);
batch_start(1000);
txn.m_txn = m_write_txn->m_txn;
m_height = 0;
while(1) {
if (!(i % 1000)) {
if (i) {
LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush;
}
MDB_val_set(pk, "txblk");
MDB_val_set(pv, m_height);
result = mdb_cursor_put(c_props, &pk, &pv, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to update txblk property: ", result).c_str()));
txn.commit();
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
m_write_txn->m_txn = txn.m_txn;
m_write_batch_txn->m_txn = txn.m_txn;
memset(&m_wcursors, 0, sizeof(m_wcursors));
}
result = mdb_cursor_open(txn, m_blocks, &c_blocks);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for blocks: ", result).c_str()));
result = mdb_cursor_open(txn, m_properties, &c_props);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for properties: ", result).c_str()));
result = mdb_cursor_open(txn, o_txs, &c_txs);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for txs: ", result).c_str()));
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_output_txs, &ms);
m_num_outputs = ms.ms_entries;
mdb_stat(txn, m_txs, &ms);
m_num_txs = i = ms.ms_entries;
if (i) {
m_num_txs = i;
MDB_val_set(pk, "txblk");
result = mdb_cursor_get(c_props, &pk, &k, MDB_SET);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from properties: ", result).c_str()));
m_height = *(uint64_t *)k.mv_data;
}
}
if (i) {
result = mdb_cursor_get(c_blocks, &k, &v, MDB_SET);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from blocks: ", result).c_str()));
}
}
result = mdb_cursor_get(c_blocks, &k, &v, MDB_NEXT);
if (result == MDB_NOTFOUND) {
MDB_val_set(pk, "txblk");
result = mdb_cursor_get(c_props, &pk, &v, MDB_SET);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from props: ", result).c_str()));
result = mdb_cursor_del(c_props, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from props: ", result).c_str()));
batch_stop();
break;
} else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from blocks: ", result).c_str()));
bd.assign(reinterpret_cast<char*>(v.mv_data), v.mv_size);
if (!parse_and_validate_block_from_blob(bd, b))
throw0(DB_ERROR("Failed to parse block from blob retrieved from the db"));
add_transaction(null_hash, b.miner_tx);
for (unsigned int j = 0; j<b.tx_hashes.size(); j++) {
transaction tx;
hk.mv_data = &b.tx_hashes[j];
result = mdb_cursor_get(c_txs, &hk, &v, MDB_SET);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get record from txs: ", result).c_str()));
bd.assign(reinterpret_cast<char*>(v.mv_data), v.mv_size);
if (!parse_and_validate_tx_from_blob(bd, tx))
throw0(DB_ERROR("Failed to parse tx from blob retrieved from the db"));
add_transaction(null_hash, tx, &b.tx_hashes[j]);
result = mdb_cursor_del(c_txs, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get record from txs: ", result).c_str()));
}
i++;
m_height = i;
}
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_drop(txn, o_txs, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete txs from the db: ", result).c_str()));
RENAME_DB("txr");
mdb_dbi_close(m_env, m_txs);
lmdb_db_open(txn, "txs", MDB_INTEGERKEY, m_txs, "Failed to open db handle for txs");
txn.commit();
} while(0);
uint32_t version = 1;
v.mv_data = (void *)&version;
v.mv_size = sizeof(version);
MDB_val_copy<const char *> vk("version");
result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_put(txn, m_properties, &vk, &v, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to update version for the db: ", result).c_str()));
txn.commit();
}
void BlockchainLMDB::migrate(const uint32_t oldversion)
{
switch(oldversion) {
case 0:
migrate_0_1(); /* FALLTHRU */
default:
;
}
}
} // namespace cryptonote
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