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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 "cryptonote_format_utils.h"
namespace cryptonote
{
void BlockchainDB::pop_block()
{
block blk;
std::vector<transaction> txs;
pop_block(blk, txs);
}
void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const transaction& tx)
{
crypto::hash tx_hash = get_transaction_hash(tx);
add_transaction_data(blk_hash, tx);
// iterate tx.vout using indices instead of C++11 foreach syntax because
// we need the index
for (uint64_t i = 0; i < tx.vout.size(); ++i)
{
add_output(tx_hash, tx.vout[i], i);
}
for (const txin_v& tx_input : tx.vin)
{
if (tx_input.type() == typeid(txin_to_key))
{
add_spent_key(boost::get<txin_to_key>(tx_input).k_image);
}
}
}
uint64_t BlockchainDB::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
)
{
try
{
// call out to subclass implementation to add the block & metadata
add_block(blk, block_size, cumulative_difficulty, coins_generated);
crypto::hash blk_hash = get_block_hash(blk);
// call out to add the transactions
for (const transaction& tx : txs)
{
add_transaction(blk_hash, tx);
}
}
// in case any of the add_block process goes awry, undo
catch (const std::exception& e)
{
LOG_ERROR("Error adding block to db: " << e.what());
try
{
pop_block();
}
// if undoing goes wrong as well, we need to throw, as blockchain
// will be in a bad state
catch (const std::exception& e)
{
LOG_ERROR("Error undoing partially added block: " << e.what());
throw;
}
throw;
}
return height();
}
void BlockchainDB::pop_block(block& blk, std::vector<transaction>& txs)
{
blk = get_top_block();
for (const auto& h : blk.tx_hashes)
{
txs.push_back(get_tx(h));
remove_transaction(h);
}
}
void BlockchainDB::remove_transaction(const crypto::hash& tx_hash)
{
transaction tx = get_tx(tx_hash);
for (const tx_out& tx_output : tx.vout)
{
remove_output(tx_output);
}
for (const txin_v& tx_input : tx.vin)
{
if (tx_input.type() == typeid(txin_to_key))
{
remove_spent_key(boost::get<txin_to_key>(tx_input).k_image);
}
}
remove_transaction_data(tx_hash);
}
} // namespace cryptonote
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