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Minor bugfixes, redundancy removal 

Minor bugfixes in block removal

Storing outputs outside their transactions is largely unnecessary, and
thus has been removed.
This commit is contained in:
Thomas Winget 2014-10-30 18:33:35 -04:00 committed by warptangent
parent 71b18d7166
commit ab7951d99a
3 changed files with 104 additions and 10 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

106
src/cryptonote_core/BlockchainDB_impl/db_lmdb.cpp
View File

@ -363,6 +363,9 @@ void BlockchainLMDB::remove_transaction_data(const crypto::hash& tx_hash)
LOG_PRINT_L1("Failed to add removal of tx block height to db transaction");
throw DB_ERROR("Failed to add removal of tx block height to db transaction");
}
remove_tx_outputs(tx_hash);
if (mdb_del(*m_write_txn, m_tx_outputs, &val_h, NULL))
{
LOG_PRINT_L1("Failed to add removal of tx outputs to db transaction");
@ -414,6 +417,8 @@ void BlockchainLMDB::add_output(const crypto::hash& tx_hash, const tx_out& tx_ou
throw DB_ERROR("Failed to add output amount to db transaction");
}
/****** Uncomment if ever outputs actually need to be stored in this manner
*
blobdata b = output_to_blob(tx_output);
v.mv_size = b.size();
@ -428,11 +433,59 @@ void BlockchainLMDB::add_output(const crypto::hash& tx_hash, const tx_out& tx_ou
LOG_PRINT_L0("Failed to add output global index to db transaction");
throw DB_ERROR("Failed to add output global index to db transaction");
}
************************************************************************/
m_num_outputs++;
}
void BlockchainLMDB::remove_tx_outputs(const crypto::hash& tx_hash)
{
lmdb_cur cur(*m_write_txn, m_tx_outputs);
crypto::hash h_cpy = tx_hash;
MDB_val k;
k.mv_size = sizeof(h_cpy);
k.mv_data = &h_cpy;
MDB_val v;
auto result = mdb_cursor_get(cur, &k, &v, MDB_SET);
if (result == MDB_NOTFOUND)
{
LOG_ERROR("Attempting to remove a tx's outputs, but none found. Continuing, but...be wary, because that's weird.");
}
else if (result)
{
LOG_PRINT_L0("DB error attempting to get an output");
throw DB_ERROR("DB error attempting to get an output");
}
else
{
size_t num_elems = 0;
mdb_cursor_count(cur, &num_elems);
mdb_cursor_get(cur, &k, &v, MDB_FIRST_DUP);
for (uint64_t i = 0; i < num_elems; ++i)
{
remove_output(*(uint64_t*)v.mv_data);
if (i < num_elems - 1)
{
mdb_cursor_get(cur, &k, &v, MDB_NEXT_DUP);
}
}
}
cur.close();
}
void BlockchainLMDB::remove_output(const tx_out& tx_output)
{
return;
}
void BlockchainLMDB::remove_output(const uint64_t& out_index)
{
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
@ -440,6 +493,7 @@ void BlockchainLMDB::remove_output(const tx_out& tx_output)
MDB_val k;
MDB_val v;
/****** Uncomment if ever outputs actually need to be stored in this manner
blobdata b;
t_serializable_object_to_blob(tx_output, b);
k.mv_size = b.size();
@ -460,7 +514,15 @@ void BlockchainLMDB::remove_output(const tx_out& tx_output)
throw DB_ERROR("Error adding removal of output global index to db transaction");
}
result = mdb_del(*m_write_txn, m_output_indices, &v, NULL);
result = mdb_del(*m_write_txn, m_outputs, &v, NULL);
if (result != 0 && result != MDB_NOTFOUND)
{
LOG_PRINT_L1("Error adding removal of output to db transaction");
throw DB_ERROR("Error adding removal of output to db transaction");
}
*********************************************************************/
auto result = mdb_del(*m_write_txn, m_output_indices, &v, NULL);
if (result != 0 && result != MDB_NOTFOUND)
{
LOG_PRINT_L1("Error adding removal of output tx index to db transaction");
@ -481,13 +543,7 @@ void BlockchainLMDB::remove_output(const tx_out& tx_output)
throw DB_ERROR("Error adding removal of output amount to db transaction");
}
result = mdb_del(*m_write_txn, m_outputs, &v, NULL);
if (result != 0 && result != MDB_NOTFOUND)
{
LOG_PRINT_L1("Error adding removal of output to db transaction");
throw DB_ERROR("Error adding removal of output to db transaction");
}
m_num_outputs--;
}
void BlockchainLMDB::add_spent_key(const crypto::key_image& k_image)
@ -674,9 +730,12 @@ void BlockchainLMDB::open(const std::string& filename)
lmdb_db_open(txn, LMDB_OUTPUT_TXS, MDB_INTEGERKEY | MDB_CREATE, m_output_txs, "Failed to open db handle for m_output_txs");
lmdb_db_open(txn, LMDB_OUTPUT_INDICES, MDB_INTEGERKEY | MDB_CREATE, m_output_indices, "Failed to open db handle for m_output_indices");
lmdb_db_open(txn, LMDB_OUTPUT_GINDICES, MDB_CREATE, m_output_gindices, "Failed to open db handle for m_output_gindices");
lmdb_db_open(txn, LMDB_OUTPUT_AMOUNTS, MDB_INTEGERKEY | MDB_DUPSORT | MDB_CREATE, m_output_amounts, "Failed to open db handle for m_output_amounts");
/*************** not used, but kept for posterity
lmdb_db_open(txn, LMDB_OUTPUTS, MDB_INTEGERKEY | MDB_CREATE, m_outputs, "Failed to open db handle for m_outputs");
lmdb_db_open(txn, LMDB_OUTPUT_GINDICES, MDB_CREATE, m_output_gindices, "Failed to open db handle for m_output_gindices");
*************************************************/
lmdb_db_open(txn, LMDB_SPENT_KEYS, MDB_CREATE, m_spent_keys, "Failed to open db handle for m_outputs");
@ -1471,8 +1530,11 @@ tx_out BlockchainLMDB::get_output(const crypto::hash& h, const uint64_t& index)
return output_from_blob(b);
}
// As this is not used, its return is now a blank output.
// This will save on space in the db.
tx_out BlockchainLMDB::get_output(const uint64_t& index)
{
return tx_out();
LOG_PRINT_L3("BlockchainLMDB::" << __func__);
check_open();
@ -1709,4 +1771,30 @@ uint64_t BlockchainLMDB::add_block( const block& blk
return ++m_height;
}
void BlockchainLMDB::pop_block(block& blk, std::vector<transaction>& txs)
{
txn_safe txn;
if (mdb_txn_begin(m_env, NULL, 0, txn))
{
LOG_PRINT_L0("Failed to create a transaction for the db");
throw DB_ERROR("Failed to create a transaction for the db");
}
m_write_txn = &txn;
uint64_t num_outputs = m_num_outputs;
try
{
BlockchainDB::pop_block(blk, txs);
txn.commit();
}
catch (...)
{
m_num_outputs = num_outputs;
throw;
}
--m_height;
}
} // namespace cryptonote

6
src/cryptonote_core/BlockchainDB_impl/db_lmdb.h
View File

@ -174,6 +174,8 @@ public:
, const std::vector<transaction>& txs
);
virtual void pop_block(block& blk, std::vector<transaction>& txs);
private:
virtual void add_block( const block& blk
, const size_t& block_size
@ -191,6 +193,10 @@ private:
virtual void remove_output(const tx_out& tx_output);
void remove_tx_outputs(const crypto::hash& tx_hash);
void remove_output(const uint64_t& out_index);
virtual void add_spent_key(const crypto::key_image& k_image);
virtual void remove_spent_key(const crypto::key_image& k_image);

2
src/cryptonote_core/blockchain_db.h
View File

@ -508,7 +508,7 @@ public:
// When a block is popped, the transactions associated with it need to be
// removed, as well as outputs and spent key images associated with
// those transactions.
void pop_block(block& blk, std::vector<transaction>& txs);
virtual void pop_block(block& blk, std::vector<transaction>& txs);
// return true if a transaction with hash <h> exists