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https://git.wownero.com/wownero/wownero.git
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136 lines
4.0 KiB
C++
136 lines
4.0 KiB
C++
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// Copyright (c) 2014, The Monero Project
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//
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without modification, are
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// permitted provided that the following conditions are met:
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//
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// 1. Redistributions of source code must retain the above copyright notice, this list of
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// conditions and the following disclaimer.
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//
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// 2. Redistributions in binary form must reproduce the above copyright notice, this list
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// of conditions and the following disclaimer in the documentation and/or other
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// materials provided with the distribution.
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//
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// 3. Neither the name of the copyright holder nor the names of its contributors may be
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// used to endorse or promote products derived from this software without specific
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// prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
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// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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// MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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// THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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// STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
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// THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "cryptonote_core/blockchain_db.h"
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#include "cryptonote_format_utils.h"
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namespace cryptonote
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{
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void BlockchainDB::pop_block()
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{
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block blk;
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std::vector<transaction> txs;
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pop_block(blk, txs);
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}
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void BlockchainDB::add_transaction(const crypto::hash& blk_hash, const transaction& tx)
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{
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crypto::hash tx_hash = get_transaction_hash(tx);
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add_transaction_data(blk_hash, tx);
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// iterate tx.vout using indices instead of C++11 foreach syntax because
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// we need the index
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for (uint64_t i = 0; i < tx.vout.size(); ++i)
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{
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add_output(tx_hash, tx.vout[i], i);
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}
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for (const txin_v& tx_input : tx.vin)
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{
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if (tx_input.type() == typeid(txin_to_key))
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{
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add_spent_key(boost::get<txin_to_key>(tx_input).k_image);
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}
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}
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}
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uint64_t BlockchainDB::add_block( const block& blk
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, const size_t& block_size
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, const difficulty_type& cumulative_difficulty
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, const uint64_t& coins_generated
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, const std::vector<transaction>& txs
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)
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{
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try
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{
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// call out to subclass implementation to add the block & metadata
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add_block(blk, block_size, cumulative_difficulty, coins_generated);
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crypto::hash blk_hash = get_block_hash(blk);
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// call out to add the transactions
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for (const transaction& tx : txs)
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{
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add_transaction(blk_hash, tx);
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}
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}
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// in case any of the add_block process goes awry, undo
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catch (const std::exception& e)
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{
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LOG_ERROR("Error adding block to db: " << e.what());
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try
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{
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pop_block();
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}
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// if undoing goes wrong as well, we need to throw, as blockchain
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// will be in a bad state
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catch (const std::exception& e)
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{
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LOG_ERROR("Error undoing partially added block: " << e.what());
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throw;
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}
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throw;
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}
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return height();
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}
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void BlockchainDB::pop_block(block& blk, std::vector<transaction>& txs)
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{
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blk = get_top_block();
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for (const auto& h : blk.tx_hashes)
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{
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txs.push_back(get_tx(h));
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remove_transaction(h);
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}
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}
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void BlockchainDB::remove_transaction(const crypto::hash& tx_hash)
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{
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transaction tx = get_tx(tx_hash);
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for (const tx_out& tx_output : tx.vout)
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{
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remove_output(tx_output);
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}
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for (const txin_v& tx_input : tx.vin)
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{
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if (tx_input.type() == typeid(txin_to_key))
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{
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remove_spent_key(boost::get<txin_to_key>(tx_input).k_image);
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}
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}
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remove_transaction_data(tx_hash);
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}
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} // namespace cryptonote
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