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// Copyright (c) 2014, The Monero Project
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without modification, are
// permitted provided that the following conditions are met:
//
// 1. Redistributions of source code must retain the above copyright notice, this list of
// conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright notice, this list
// of conditions and the following disclaimer in the documentation and/or other
// materials provided with the distribution.
//
// 3. Neither the name of the copyright holder nor the names of its contributors may be
// used to endorse or promote products derived from this software without specific
// prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "cryptonote_core/blockchain_db.h"
#include <lmdb.h>
namespace cryptonote
{
struct txn_safe
{
txn_safe() : m_txn(NULL) { }
~txn_safe()
{
if(m_txn != NULL)
{
mdb_txn_abort(m_txn);
}
}
void commit(std::string message = "")
{
if (message.size() == 0)
{
message = "Failed to commit a transaction to the db";
}
if (mdb_txn_commit(m_txn))
{
m_txn = NULL;
LOG_PRINT_L0(message);
throw DB_ERROR(message.c_str());
}
m_txn = NULL;
}
operator MDB_txn*()
{
return m_txn;
}
operator MDB_txn**()
{
return &m_txn;
}
MDB_txn* m_txn;
};
class BlockchainLMDB : public BlockchainDB
{
public:
BlockchainLMDB();
~BlockchainLMDB();
virtual void open(const std::string& filename);
virtual void create(const std::string& filename);
virtual void close();
virtual void sync();
virtual void reset();
virtual std::vector<std::string> get_filenames();
virtual bool lock();
virtual void unlock();
virtual bool block_exists(const crypto::hash& h);
virtual block get_block(const crypto::hash& h);
virtual uint64_t get_block_height(const crypto::hash& h);
virtual block_header get_block_header(const crypto::hash& h);
virtual block get_block_from_height(const uint64_t& height);
virtual uint64_t get_block_timestamp(const uint64_t& height) ;
virtual uint64_t get_top_block_timestamp();
virtual size_t get_block_size(const uint64_t& height);
virtual difficulty_type get_block_cumulative_difficulty(const uint64_t& height);
virtual difficulty_type get_block_difficulty(const uint64_t& height);
virtual uint64_t get_block_already_generated_coins(const uint64_t& height);
virtual crypto::hash get_block_hash_from_height(const uint64_t& height);
virtual std::vector<block> get_blocks_range(const uint64_t& h1, const uint64_t& h2);
virtual std::vector<crypto::hash> get_hashes_range(const uint64_t& h1, const uint64_t& h2);
virtual crypto::hash top_block_hash();
virtual block get_top_block();
virtual uint64_t height();
virtual bool tx_exists(const crypto::hash& h);
virtual uint64_t get_tx_unlock_time(const crypto::hash& h);
virtual transaction get_tx(const crypto::hash& h);
virtual uint64_t get_tx_count();
virtual std::vector<transaction> get_tx_list(const std::vector<crypto::hash>& hlist);
virtual uint64_t get_tx_block_height(const crypto::hash& h);
virtual uint64_t get_random_output(const uint64_t& amount);
virtual uint64_t get_num_outputs(const uint64_t& amount);
virtual crypto::public_key get_output_key(const uint64_t& amount, const uint64_t& index);
virtual tx_out get_output(const crypto::hash& h, const uint64_t& index);
virtual tx_out_index get_output_tx_and_index(const uint64_t& amount, const uint64_t& index);
virtual std::vector<uint64_t> get_tx_output_indices(const crypto::hash& h);
virtual bool has_key_image(const crypto::key_image& img);
virtual uint64_t 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
);
private:
virtual void add_block( const block& blk
, const size_t& block_size
, const difficulty_type& cumulative_difficulty
, const uint64_t& coins_generated
);
virtual void remove_block();
virtual void add_transaction_data(const crypto::hash& blk_hash, const transaction& tx);
virtual void remove_transaction_data(const crypto::hash& tx_hash);
virtual void add_output(const crypto::hash& tx_hash, const tx_out& tx_output, const uint64_t& local_index);
virtual void remove_output(const tx_out& tx_output);
virtual void add_spent_key(const crypto::key_image& k_image);
virtual void remove_spent_key(const crypto::key_image& k_image);
void check_open();
MDB_env* m_env;
MDB_dbi m_blocks;
MDB_dbi m_block_hashes;
MDB_dbi m_block_sizes;
MDB_dbi m_block_diffs;
MDB_dbi m_block_coins;
MDB_dbi m_txs;
MDB_dbi m_tx_heights;
MDB_dbi m_tx_outputs;
MDB_dbi m_output_txs;
MDB_dbi m_output_indices;
MDB_dbi m_output_gindices;
MDB_dbi m_output_amounts;
MDB_dbi m_outputs;
MDB_dbi m_spent_keys;
bool m_open;
uint64_t m_height;
uint64_t m_num_outputs;
std::string m_folder;
txn_safe* m_write_txn;
};
} // namespace cryptonote
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