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Add LMDB error string to database transaction exception message 

When throwing an exception from being unable to begin an LMDB
transaction, include the reason.

It's often been due to a write transaction attempted within a write
transaction (batch mode), but there can be other reasons such as write
transaction attempted while database was opened read only, or
environment's map needs to be resized.
This commit is contained in:
warptangent 2015-12-13 08:45:03 -08:00
parent e175205e6e
commit 79ff6a5a56
No known key found for this signature in database
GPG Key ID: 0E490BEBFBE4E92D
1 changed files with 74 additions and 68 deletions
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142
src/blockchain_db/lmdb/db_lmdb.cpp
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@ -208,6 +208,12 @@ inline void lmdb_db_open(MDB_txn* txn, const char* name, int flags, MDB_dbi& dbi
throw0(cryptonote::DB_OPEN_FAILURE(error_string.c_str()));
}
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;
}
} // anonymous namespace
namespace cryptonote
@ -994,8 +1000,8 @@ void BlockchainLMDB::open(const std::string& filename, const int mdb_flags)
// get a read/write MDB_txn, depending on mdb_flags
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, txn_flags, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
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
@ -1206,8 +1212,8 @@ bool BlockchainLMDB::block_exists(const crypto::hash& h) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val_copy<crypto::hash> key(h);
MDB_val result;
@ -1239,8 +1245,8 @@ uint64_t BlockchainLMDB::get_block_height(const crypto::hash& h) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val_copy<crypto::hash> key(h);
MDB_val result;
@ -1269,8 +1275,8 @@ block BlockchainLMDB::get_block_from_height(const uint64_t& height) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val_copy<uint64_t> key(height);
MDB_val result;
@ -1305,8 +1311,8 @@ uint64_t BlockchainLMDB::get_block_timestamp(const uint64_t& height) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<uint64_t> key(height);
MDB_val result;
@ -1348,8 +1354,8 @@ size_t BlockchainLMDB::get_block_size(const uint64_t& height) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<uint64_t> key(height);
@ -1378,8 +1384,8 @@ difficulty_type BlockchainLMDB::get_block_cumulative_difficulty(const uint64_t&
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<uint64_t> key(height);
MDB_val result;
@ -1424,8 +1430,8 @@ uint64_t BlockchainLMDB::get_block_already_generated_coins(const uint64_t& heigh
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<uint64_t> key(height);
@ -1454,8 +1460,8 @@ crypto::hash BlockchainLMDB::get_block_hash_from_height(const uint64_t& height)
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<uint64_t> key(height);
@ -1547,8 +1553,8 @@ bool BlockchainLMDB::tx_exists(const crypto::hash& h) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<crypto::hash> key(h);
@ -1577,8 +1583,8 @@ uint64_t BlockchainLMDB::get_tx_unlock_time(const crypto::hash& h) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val_copy<crypto::hash> key(h);
MDB_val result;
@ -1602,8 +1608,8 @@ transaction BlockchainLMDB::get_tx(const crypto::hash& h) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<crypto::hash> key(h);
@ -1632,8 +1638,8 @@ uint64_t BlockchainLMDB::get_tx_count() const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_stat db_stats;
if (mdb_stat(txn, m_txs, &db_stats))
@ -1669,8 +1675,8 @@ uint64_t BlockchainLMDB::get_tx_block_height(const crypto::hash& h) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<crypto::hash> key(h);
@ -1695,8 +1701,8 @@ uint64_t BlockchainLMDB::get_num_outputs(const uint64_t& amount) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
lmdb_cur cur(txn, m_output_amounts);
@ -1724,8 +1730,8 @@ output_data_t BlockchainLMDB::get_output_key(const uint64_t &global_index) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val_copy<uint64_t> k(global_index);
MDB_val v;
@ -1758,8 +1764,8 @@ tx_out_index BlockchainLMDB::get_output_tx_and_index_from_global(const uint64_t&
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
MDB_val_copy<uint64_t> k(index);
MDB_val v;
@ -1803,8 +1809,8 @@ std::vector<uint64_t> BlockchainLMDB::get_tx_output_indices(const crypto::hash&
std::vector<uint64_t> index_vec;
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
lmdb_cur cur(txn, m_tx_outputs);
@ -1848,8 +1854,8 @@ std::vector<uint64_t> BlockchainLMDB::get_tx_amount_output_indices(const crypto:
transaction tx = get_tx(h);
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
uint64_t i = 0;
uint64_t global_index;
@ -1919,8 +1925,8 @@ bool BlockchainLMDB::has_key_image(const crypto::key_image& img) const
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val_copy<crypto::key_image> val_key(img);
MDB_val unused;
@ -1940,8 +1946,8 @@ bool BlockchainLMDB::for_all_key_images(std::function<bool(const crypto::key_ima
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val k;
MDB_val v;
@ -1976,8 +1982,8 @@ bool BlockchainLMDB::for_all_blocks(std::function<bool(uint64_t, const crypto::h
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val k;
MDB_val v;
@ -2020,8 +2026,8 @@ bool BlockchainLMDB::for_all_transactions(std::function<bool(const crypto::hash&
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val k;
MDB_val v;
@ -2061,8 +2067,8 @@ bool BlockchainLMDB::for_all_outputs(std::function<bool(uint64_t amount, const c
check_open();
mdb_txn_safe txn;
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
MDB_val k;
MDB_val v;
@ -2112,8 +2118,8 @@ void BlockchainLMDB::batch_start(uint64_t batch_num_blocks)
m_write_batch_txn = new mdb_txn_safe();
// NOTE: need to make sure it's destroyed properly when done
if (mdb_txn_begin(m_env, NULL, 0, *m_write_batch_txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, *m_write_batch_txn))
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;
@ -2210,8 +2216,8 @@ uint64_t BlockchainLMDB::add_block(const block& blk, const size_t& block_size, c
mdb_txn_safe txn;
if (! m_batch_active)
{
if (mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
m_write_txn = &txn;
}
@ -2248,8 +2254,8 @@ void BlockchainLMDB::pop_block(block& blk, std::vector<transaction>& txs)
mdb_txn_safe txn;
if (! m_batch_active)
{
if (mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
m_write_txn = &txn;
}
@ -2287,8 +2293,8 @@ void BlockchainLMDB::get_output_tx_and_index_from_global(const std::vector<uint6
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
for (const uint64_t &index : global_indices)
@ -2339,8 +2345,8 @@ void BlockchainLMDB::get_output_global_indices(const uint64_t& amount, const std
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
lmdb_cur cur(*txn_ptr, m_output_amounts);
@ -2445,8 +2451,8 @@ void BlockchainLMDB::get_output_key(const uint64_t &amount, const std::vector<ui
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
}
for (const uint64_t &index : global_indices)
{
@ -2500,8 +2506,8 @@ void BlockchainLMDB::set_hard_fork_starting_height(uint8_t version, uint64_t hei
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
txn_ptr = &txn;
}
@ -2525,8 +2531,8 @@ uint64_t BlockchainLMDB::get_hard_fork_starting_height(uint8_t version) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
txn_ptr = &txn;
}
@ -2555,8 +2561,8 @@ void BlockchainLMDB::set_hard_fork_version(uint64_t height, uint8_t version)
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, 0, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
txn_ptr = &txn;
}
@ -2580,8 +2586,8 @@ uint8_t BlockchainLMDB::get_hard_fork_version(uint64_t height) const
txn_ptr = m_write_txn;
else
{
if (mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR("Failed to create a transaction for the db"));
if (auto mdb_res = mdb_txn_begin(m_env, NULL, MDB_RDONLY, txn))
throw0(DB_ERROR(lmdb_error("Failed to create a transaction for the db: ", mdb_res).c_str()));
txn_ptr = &txn;
}