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Another take on migration

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Delete old indices and recreate them, rather than updating them
Maybe not quite as slow as before.
This commit is contained in:
Howard Chu 2016-04-10 17:25:13 +01:00
parent 66b1e13aa7
commit 2b0fa05f0d
2 changed files with 115 additions and 591 deletions
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24
src/blockchain_db/blockchain_db.h
View File

@ -462,18 +462,6 @@ private:
*/ */
void pop_block(); void pop_block();
/**
* @brief helper function for add_transactions, to add each individual transaction
*
* This function is called by add_transactions() for each transaction to be
* added.
*
* @param blk_hash hash of the block which has the transaction
* @param tx the transaction to add
* @param tx_hash_ptr the hash of the transaction, if already calculated
*/
void add_transaction(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash* tx_hash_ptr = NULL);
// helper function to remove transaction from blockchain // helper function to remove transaction from blockchain
/** /**
* @brief helper function to remove transaction from the blockchain * @brief helper function to remove transaction from the blockchain
@ -492,6 +480,18 @@ private:
protected: protected:
/**
* @brief helper function for add_transactions, to add each individual transaction
*
* This function is called by add_transactions() for each transaction to be
* added.
*
* @param blk_hash hash of the block which has the transaction
* @param tx the transaction to add
* @param tx_hash_ptr the hash of the transaction, if already calculated
*/
void add_transaction(const crypto::hash& blk_hash, const transaction& tx, const crypto::hash* tx_hash_ptr = NULL);
mutable uint64_t time_tx_exists = 0; //!< a performance metric mutable uint64_t time_tx_exists = 0; //!< a performance metric
uint64_t time_commit1 = 0; //!< a performance metric uint64_t time_commit1 = 0; //!< a performance metric
bool m_auto_remove_logs = true; //!< whether or not to automatically remove old logs bool m_auto_remove_logs = true; //!< whether or not to automatically remove old logs

670
src/blockchain_db/lmdb/db_lmdb.cpp
View File

@ -1142,8 +1142,8 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
// See commit e5d2680094ee15889934fe28901e4e133cda56f2 2015/07/10 // See commit e5d2680094ee15889934fe28901e4e133cda56f2 2015/07/10
// We don't handle the old format previous to that commit. // We don't handle the old format previous to that commit.
txn.commit(); txn.commit();
migrate(*(const uint32_t *)v.mv_data);
m_open = true; m_open = true;
migrate(*(const uint32_t *)v.mv_data);
return; return;
} }
#endif #endif
@ -2777,13 +2777,6 @@ void BlockchainLMDB::fixup()
BlockchainDB::fixup(); BlockchainDB::fixup();
} }
static int compare_amtidx(const MDB_val *a, const MDB_val *b)
{
const uint64_t *pa = (const uint64_t *)a->mv_data;
const uint64_t *pb = (const uint64_t *)b->mv_data;
return (pa[0] < pb[1]) ? -1 : pa[0] > pb[1];
}
#define RENAME_DB(name) \ #define RENAME_DB(name) \
k.mv_data = (void *)name; \ k.mv_data = (void *)name; \
k.mv_size = sizeof(name)-1; \ k.mv_size = sizeof(name)-1; \
@ -3125,395 +3118,63 @@ void BlockchainLMDB::migrate_0_1()
txn.commit(); txn.commit();
} while(0); } while(0);
LOG_PRINT_L0("Total number of outputs: " << m_num_outputs);
LOG_PRINT_L1("outputs migration will update output_amounts and output_txs...");
do { do {
LOG_PRINT_L1("migrating output_amounts:"); LOG_PRINT_L1("deleting old indices:");
MDB_dbi keys; /* Delete all other tables, we're just going to recreate them */
MDB_dbi dbi;
result = mdb_txn_begin(m_env, NULL, 0, txn); result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str())); throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str()));
result = mdb_dbi_open(txn, "output_keys", 0, &keys);
result = mdb_dbi_open(txn, "tx_unlocks", 0, &dbi);
if (result == MDB_NOTFOUND) { if (result == MDB_NOTFOUND) {
txn.abort(); txn.abort();
LOG_PRINT_L1(" output_amounts already migrated"); LOG_PRINT_L1(" old indices already deleted");
break; break;
} }
MDB_dbi o_amts; txn.abort();
outkey ok;
MDB_val_set(nv, ok);
/* the output_amounts table name is the same but the old version and new version #define DELETE_DB(x) do { \
* have incompatible DB flags. Create a new table with the right flags. LOG_PRINT_L1(" " x ":"); \
*/ result = mdb_txn_begin(m_env, NULL, 0, txn); \
o_amts = m_output_amounts; if (result) \
lmdb_db_open(txn, "output_amountr", MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_output_amounts, "Failed to open db handle for output_amountr"); throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str())); \
mdb_set_dupsort(txn, m_output_amounts, compare_uint64); 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)
MDB_cursor *c_oamts, *c_keys, *c_cur; DELETE_DB("tx_heights");
i = 0; DELETE_DB("output_txs");
z = m_num_outputs; DELETE_DB("output_indices");
uint64_t j; DELETE_DB("output_keys");
mdb_size_t num_elems; DELETE_DB("spent_keys");
MDB_val v2; DELETE_DB("output_amounts");
DELETE_DB("tx_outputs");
DELETE_DB("tx_unlocks");
while(1) { /* reopen new DBs with correct flags */
if (!(i % 1000)) {
if (i) {
LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush;
}
txn.commit();
result = mdb_txn_begin(m_env, NULL, 0, txn); result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str())); 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");
result = mdb_cursor_open(txn, m_output_amounts, &c_cur); mdb_set_dupsort(txn, m_output_txs, compare_uint64);
if (result) lmdb_db_open(txn, LMDB_TX_OUTPUTS, MDB_INTEGERKEY | MDB_CREATE, m_tx_outputs, "Failed to open db handle for m_tx_outputs");
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_amountr: ", result).c_str())); 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");
result = mdb_cursor_open(txn, o_amts, &c_oamts); mdb_set_dupsort(txn, m_spent_keys, compare_hash32);
if (result) 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");
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_amounts: ", result).c_str()));
result = mdb_cursor_open(txn, keys, &c_keys);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_keys: ", result).c_str()));
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_output_amounts, &ms);
i = ms.ms_entries;
}
}
result = mdb_cursor_get(c_oamts, &k, &v, MDB_FIRST);
if (result == MDB_NOTFOUND) {
txn.commit();
break;
} else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from output_amounts: ", result).c_str()));
result = mdb_cursor_count(c_oamts, &num_elems);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get number of outputs for amount: ", result).c_str()));
for (j=0; j<num_elems; j++,i++) {
if (!(i % 1000)) {
uint64_t amt = *(uint64_t *)k.mv_data;
uint64_t oid = *(uint64_t *)v.mv_data;
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_output_amounts, &c_cur);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_amountr: ", result).c_str()));
result = mdb_cursor_open(txn, o_amts, &c_oamts);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_amounts: ", result).c_str()));
result = mdb_cursor_open(txn, keys, &c_keys);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_keys: ", result).c_str()));
k.mv_data = (void *)&amt;
v.mv_data = (void *)&oid;
result = mdb_cursor_get(c_oamts, &k, &v, MDB_GET_BOTH);
/* should never fail since we already had this record before the commit */
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from output_amounts: ", result).c_str()));
}
result = mdb_cursor_get(c_keys, &v, &v2, MDB_SET);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get output_key for amount: ", result).c_str()));
ok.amount_index = j;
ok.output_id = *(uint64_t *)v.mv_data;
ok.data = *(output_data_t *)v2.mv_data;
result = mdb_cursor_put(c_cur, &k, &nv, MDB_APPENDDUP);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into output_amountr: ", result).c_str()));
result = mdb_cursor_del(c_keys, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from output_keys: ", result).c_str()));
result = mdb_cursor_get(c_oamts, &k, &v, MDB_NEXT_DUP);
if (result == MDB_NOTFOUND)
break;
else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from output_amounts: ", result).c_str()));
}
result = mdb_cursor_del(c_oamts, MDB_NODUPDATA);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from output_amounts: ", result).c_str()));
}
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, keys, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete output_keys from the db: ", result).c_str()));
result = mdb_drop(txn, o_amts, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete output_amounts from the db: ", result).c_str()));
RENAME_DB("output_amountr");
/* close and reopen to get old dbi slot back */
mdb_dbi_close(m_env, m_output_amounts);
lmdb_db_open(txn, "output_amounts", MDB_INTEGERKEY | MDB_DUPSORT | MDB_DUPFIXED, m_output_amounts, "Failed to open db handle for output_amounts");
mdb_set_dupsort(txn, m_output_amounts, compare_uint64); mdb_set_dupsort(txn, m_output_amounts, compare_uint64);
txn.commit(); txn.commit();
m_num_txs = 0;
m_num_outputs = 0;
} while(0); } while(0);
do { do {
LOG_PRINT_L1("migrating output_txs:"); LOG_PRINT_L1("migrating txs and outputs:");
MDB_dbi indices;
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, "output_indices", 0, &indices);
if (result == MDB_NOTFOUND) {
txn.abort();
LOG_PRINT_L1(" output_txs already migrated");
break;
}
MDB_dbi o_otxs;
outtx ot;
MDB_val_set(nv, ot);
/* the output_txs 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_otxs = m_output_txs;
lmdb_db_open(txn, "output_txr", MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_output_txs, "Failed to open db handle for output_txr");
mdb_set_dupsort(txn, m_output_txs, compare_uint64);
MDB_cursor *c_otxs, *c_oixs, *c_cur;
i = 0;
z = m_num_outputs;
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_output_txs, &c_cur);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_txr: ", result).c_str()));
result = mdb_cursor_open(txn, o_otxs, &c_otxs);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_txs: ", result).c_str()));
result = mdb_cursor_open(txn, indices, &c_oixs);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_indices: ", result).c_str()));
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_output_txs, &ms);
i = ms.ms_entries;
}
}
result = mdb_cursor_get(c_otxs, &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 output_txs: ", result).c_str()));
ot.output_id = *(uint64_t *)k.mv_data;
ot.tx_hash = *(crypto::hash *)v.mv_data;
result = mdb_cursor_get(c_oixs, &k, &v, MDB_NEXT);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from output_indices: ", result).c_str()));
ot.local_index = *(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 output_txr: ", result).c_str()));
result = mdb_cursor_del(c_otxs, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from output_txs: ", result).c_str()));
result = mdb_cursor_del(c_oixs, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from output_indices: ", 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()));
result = mdb_drop(txn, indices, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete output_indices from the db: ", result).c_str()));
result = mdb_drop(txn, o_otxs, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete output_txs from the db: ", result).c_str()));
RENAME_DB("output_txr");
mdb_dbi_close(m_env, m_output_txs);
lmdb_db_open(txn, "output_txs", MDB_INTEGERKEY | MDB_DUPSORT | MDB_DUPFIXED, m_output_txs, "Failed to open db handle for output_txs");
mdb_set_dupsort(txn, m_output_txs, compare_uint64);
txn.commit();
} while(0);
LOG_PRINT_L0("Total number of txs: " << m_num_txs);
LOG_PRINT_L1("txs migration will update tx_indices, tx_outputs, and txs...");
do {
LOG_PRINT_L1("migrating tx_indices:");
/* The existing indices lack information that version 1 needs, so we just regenerate it
* all from the original Blocks.
*/
MDB_dbi o_tx_unlocks;
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, &o_tx_unlocks);
if (result == MDB_NOTFOUND) {
txn.abort();
LOG_PRINT_L1(" tx_indices already migrated");
break;
}
MDB_dbi o_tx_heights;
MDB_cursor *c_cur, *c_blocks, *c_props;
MDB_cursor *c_tx_unlocks, *c_tx_heights;
lmdb_db_open(txn, "tx_heights", 0, o_tx_heights, "Failed to open db handle for tx_heights");
txindex ti;
MDB_val_set(iv, ti);
unsigned int j;
blobdata bd;
block b;
uint64_t num_txs = m_num_txs;
i = 0;
ti.data.block_id = 0;
z = m_num_txs;
while(1) {
if (!(ti.data.block_id % 1000)) {
if (i) {
LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush;
}
MDB_val_set(pk, "txblk");
MDB_val_set(pv, ti.data.block_id);
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()));
}
result = mdb_cursor_open(txn, m_tx_indices, &c_cur);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for tx_indices: ", 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_tx_unlocks, &c_tx_unlocks);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for tx_unlocks: ", result).c_str()));
result = mdb_cursor_open(txn, o_tx_heights, &c_tx_heights);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for tx_heights: ", result).c_str()));
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()));
/* we don't care about the unlocks/heights content or cursor position.
* we just delete 1 record from each whenever we add a record.
*/
mdb_cursor_get(c_tx_unlocks, &k, &v, MDB_FIRST);
mdb_cursor_get(c_tx_heights, &k, &v, MDB_FIRST);
if (!i) {
MDB_stat ms;
mdb_stat(txn, m_tx_indices, &ms);
i = ms.ms_entries;
if (i) {
/* remember the ID of the last block we migrated */
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 tx_indices: ", result).c_str()));
ti.data.block_id = *(uint64_t *)v.mv_data;
}
num_txs = i;
}
if (i) {
k.mv_data = (void *)&ti.data.block_id;
k.mv_size = sizeof(ti.data.block_id);
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");
mdb_cursor_get(c_props, &pk, &v, MDB_SET);
mdb_cursor_del(c_props, 0);
txn.commit();
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"));
ti.key = get_transaction_hash(b.miner_tx);
ti.data.tx_id = num_txs++;
ti.data.block_id = *(uint64_t *)k.mv_data;
ti.data.unlock_time = b.miner_tx.unlock_time;
i++;
result = mdb_cursor_put(c_cur, (MDB_val *)&zerokval, &iv, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into tx_indices: ", result).c_str()));
result = mdb_cursor_del(c_tx_unlocks, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from tx_unlocks: ", result).c_str()));
result = mdb_cursor_del(c_tx_heights, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from tx_heights: ", result).c_str()));
for (j=0; j<b.tx_hashes.size(); j++) {
ti.key = b.tx_hashes[j];
ti.data.tx_id = num_txs++;
result = mdb_cursor_put(c_cur, (MDB_val *)&zerokval, &iv, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into tx_indices: ", result).c_str()));
result = mdb_cursor_del(c_tx_unlocks, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from tx_unlocks: ", result).c_str()));
result = mdb_cursor_del(c_tx_heights, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from tx_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()));
result = mdb_drop(txn, o_tx_unlocks, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete tx_unlocks from the db: ", result).c_str()));
result = mdb_drop(txn, o_tx_heights, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete tx_heights from the db: ", result).c_str()));
txn.commit();
m_num_txs = num_txs;
} while(0);
do {
LOG_PRINT_L1("migrating txs and tx_outputs:");
unsigned int flags; unsigned int flags;
result = mdb_txn_begin(m_env, NULL, 0, txn); result = mdb_txn_begin(m_env, NULL, 0, txn);
@ -3529,30 +3190,26 @@ void BlockchainLMDB::migrate_0_1()
break; break;
} }
MDB_dbi o_txs, o_tx_outputs; MDB_dbi o_txs;
txindex *txp; blobdata bd;
MDB_val ik, iv; block b;
MDB_val hk;
o_txs = m_txs; 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"); lmdb_db_open(txn, "txr", MDB_INTEGERKEY | MDB_CREATE, m_txs, "Failed to open db handle for txr");
o_tx_outputs = m_tx_outputs;
lmdb_db_open(txn, "tx_outputr", MDB_INTEGERKEY | MDB_CREATE, m_tx_outputs, "Failed to open db handle for tx_outputr");
mdb_set_dupsort(txn, o_tx_outputs, compare_uint64);
/* a hack to let us find amount index from global index */ txn.commit();
mdb_set_dupsort(txn, m_output_amounts, compare_amtidx);
{ MDB_cursor *c_blocks, *c_txs, *c_props, *c_cur;
MDB_stat ms;
mdb_stat(txn, m_tx_indices, &ms);
m_num_txs = ms.ms_entries;
}
MDB_cursor *c_cur, *c_curtxo, *c_txi;
MDB_cursor *c_txs, *c_tx_outputs;
MDB_cursor *c_oamts;
i = 0; i = 0;
z = m_num_txs; 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) { while(1) {
if (!(i % 1000)) { if (!(i % 1000)) {
@ -3560,122 +3217,80 @@ void BlockchainLMDB::migrate_0_1()
LOGIF(1) { LOGIF(1) {
std::cout << i << " / " << z << " \r" << std::flush; 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(); txn.commit();
result = mdb_txn_begin(m_env, NULL, 0, txn); result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", result).c_str())); 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_txs, &c_cur); result = mdb_cursor_open(txn, m_blocks, &c_blocks);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for txr: ", result).c_str())); 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); result = mdb_cursor_open(txn, o_txs, &c_txs);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for txs: ", result).c_str())); throw0(DB_ERROR(lmdb_error("Failed to open a cursor for txs: ", result).c_str()));
result = mdb_cursor_open(txn, o_tx_outputs, &c_tx_outputs);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for tx_outputs: ", result).c_str()));
result = mdb_cursor_open(txn, m_tx_outputs, &c_curtxo);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for tx_outputr: ", result).c_str()));
result = mdb_cursor_open(txn, m_tx_indices, &c_txi);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for tx_indices: ", result).c_str()));
result = mdb_cursor_open(txn, m_output_amounts, &c_oamts);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for output_amounts: ", result).c_str()));
if (!i) { if (!i) {
MDB_stat ms; MDB_stat ms;
mdb_stat(txn, m_output_txs, &ms);
m_num_outputs = ms.ms_entries;
mdb_stat(txn, m_txs, &ms); mdb_stat(txn, m_txs, &ms);
i = ms.ms_entries; 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) { if (i) {
result = mdb_cursor_get(c_txs, &k, &v, MDB_FIRST); result = mdb_cursor_get(c_blocks, &k, &v, MDB_SET);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from txs: ", result).c_str())); throw0(DB_ERROR(lmdb_error("Failed to get a record from blocks: ", result).c_str()));
result = mdb_cursor_get(c_txi, (MDB_val *)&zerokval, &k, MDB_GET_BOTH);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from tx_indices: ", result).c_str()));
result = mdb_cursor_get(c_txi, &k, &v, MDB_PREV);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from tx_indices: ", result).c_str()));
} }
} }
/* The new tx_indices and the old txs tables are both sorted using result = mdb_cursor_get(c_blocks, &k, &v, MDB_NEXT);
* compare_hash32 so we can walk thru them sequentially and they will
* stay in lock step with each other. Unfortunately, even though the
* old tx_outputs was keyed with the tx hash, it wasn't set to use
* the compare_hash32 function, so its records are in some other random
* hash order. This costs us the majority of CPU time when walking
* thru that table. Iterating with MDB_NEXT is cheap/free, but searching
* through a multi-million record table with 32byte keys is quite costly.
*/
result = mdb_cursor_get(c_txi, &k, &v, MDB_NEXT);
if (result == MDB_NOTFOUND) { if (result == MDB_NOTFOUND) {
txn.commit(); MDB_val_set(pk, "txblk");
mdb_cursor_get(c_props, &pk, &v, MDB_SET);
mdb_cursor_del(c_props, 0);
batch_stop();
break; break;
} else if (result) } else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from tx_indices: ", result).c_str())); throw0(DB_ERROR(lmdb_error("Failed to get a record from blocks: ", result).c_str()));
txp = (txindex *)v.mv_data;
k.mv_data = (void *)&txp->key;
k.mv_size = sizeof(txp->key);
ik.mv_data = (void *)&txp->data.tx_id;
ik.mv_size = sizeof(txp->data.tx_id);
result = mdb_cursor_get(c_txs, &k, &v, MDB_FIRST);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from txs: ", result).c_str()));
result = mdb_cursor_put(c_cur, &ik, &v, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into txr: ", result).c_str()));
result = mdb_cursor_get(c_tx_outputs, &k, &iv, MDB_SET);
if (!result) {
blobdata bd;
bd.assign(reinterpret_cast<char*>(v.mv_data), v.mv_size); 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; 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)) if (!parse_and_validate_tx_from_blob(bd, tx))
throw0(DB_ERROR("Failed to parse tx from blob retrieved from the db")); throw0(DB_ERROR("Failed to parse tx from blob retrieved from the db"));
add_transaction(null_hash, tx, &b.tx_hashes[j]);
/* turn global output indices into amount output indices */
std::vector<uint64_t> indices;
int j;
for (j=0;;j++) {
MDB_val_set(vk, tx.vout[j].amount);
result = mdb_cursor_get(c_oamts, &vk, &iv, MDB_GET_BOTH);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from output_amounts: ", result).c_str()));
outkey *ok = (outkey *)v.mv_data;
indices.push_back(ok->amount_index);
result = mdb_cursor_get(c_tx_outputs, &k, &iv, MDB_NEXT_DUP);
if (result == MDB_NOTFOUND)
break;
else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from tx_outputs: ", result).c_str()));
}
v.mv_data = (void *)indices.data();
v.mv_size = sizeof(uint64_t) * indices.size();
result = mdb_cursor_put(c_curtxo, &ik, &v, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into tx_outputr: ", result).c_str()));
result = mdb_cursor_del(c_tx_outputs, MDB_NODUPDATA);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from tx_outputs: ", result).c_str()));
} else if (result == MDB_NOTFOUND) {
/* get_tx_amount_output_indices expects a record here, even if it's empty */
v.mv_size = 0;
v.mv_data = NULL;
result = mdb_cursor_put(c_curtxo, &ik, &v, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into tx_outputr: ", result).c_str()));
} else
throw0(DB_ERROR(lmdb_error("Failed to get a record from tx_outputs: ", result).c_str()));
result = mdb_cursor_del(c_txs, 0); result = mdb_cursor_del(c_txs, 0);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from txs: ", result).c_str())); throw0(DB_ERROR(lmdb_error("Failed to get record from txs: ", result).c_str()));
}
i++; i++;
m_height = i;
} }
result = mdb_txn_begin(m_env, NULL, 0, txn); result = mdb_txn_begin(m_env, NULL, 0, txn);
if (result) if (result)
@ -3683,103 +3298,12 @@ void BlockchainLMDB::migrate_0_1()
result = mdb_drop(txn, o_txs, 1); result = mdb_drop(txn, o_txs, 1);
if (result) if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete txs from the db: ", result).c_str())); throw0(DB_ERROR(lmdb_error("Failed to delete txs from the db: ", result).c_str()));
result = mdb_drop(txn, o_tx_outputs, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete tx_outputs from the db: ", result).c_str()));
RENAME_DB("txr"); RENAME_DB("txr");
RENAME_DB("tx_outputr");
mdb_dbi_close(m_env, m_txs); mdb_dbi_close(m_env, m_txs);
mdb_dbi_close(m_env, m_tx_outputs);
lmdb_db_open(txn, "txs", MDB_INTEGERKEY, m_txs, "Failed to open db handle for txs"); lmdb_db_open(txn, "txs", MDB_INTEGERKEY, m_txs, "Failed to open db handle for txs");
lmdb_db_open(txn, "tx_outputs", MDB_INTEGERKEY, m_tx_outputs, "Failed to open db handle for tx_outputs");
mdb_set_dupsort(txn, m_output_amounts, compare_uint64);
txn.commit();
} while(0);
do {
LOG_PRINT_L1("migrating spent_keys:");
MDB_dbi o_keys;
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_spent_keys, &flags);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to retrieve spent_keys 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(" spent_keys already migrated");
break;
}
/* the spent_keys 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_keys = m_spent_keys;
lmdb_db_open(txn, "spent_keyr", MDB_INTEGERKEY | MDB_CREATE | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for spent_keyr");
mdb_set_dupsort(txn, m_spent_keys, compare_hash32);
MDB_cursor *c_old, *c_cur;
i = 0;
MDB_stat ms;
mdb_stat(txn, o_keys, &ms);
z = ms.ms_entries;
mdb_stat(txn, m_spent_keys, &ms);
z += ms.ms_entries;
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_spent_keys, &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_keys, &c_old);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to open a cursor for spent_keys: ", result).c_str()));
if (!i)
i = ms.ms_entries;
}
result = mdb_cursor_get(c_old, &k, NULL, MDB_NEXT);
if (result == MDB_NOTFOUND) {
txn.commit();
break;
}
else if (result)
throw0(DB_ERROR(lmdb_error("Failed to get a record from spent_keys: ", result).c_str()));
result = mdb_cursor_put(c_cur, (MDB_val *)&zerokval, &k, MDB_APPENDDUP);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to put a record into spent_keyr: ", result).c_str()));
result = mdb_cursor_del(c_old, 0);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete a record from spent_keys: ", 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_keys, 1);
if (result)
throw0(DB_ERROR(lmdb_error("Failed to delete old spent_keys table: ", result).c_str()));
RENAME_DB("spent_keyr");
mdb_dbi_close(m_env, m_spent_keys);
lmdb_db_open(txn, "spent_keys", MDB_INTEGERKEY | MDB_DUPSORT | MDB_DUPFIXED, m_spent_keys, "Failed to open db handle for spent_keys");
mdb_set_dupsort(txn, m_spent_keys, compare_hash32);
txn.commit(); txn.commit();
} while(0); } while(0);