BlockChainLoader.cpp

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/*
        This file is part of cpp-ethereum.

        cpp-ethereum is free software: you can redistribute it and/or modify
        it under the terms of the GNU General Public License as published by
        the Free Software Foundation, either version 3 of the License, or
        (at your option) any later version.

        cpp-ethereum is distributed in the hope that it will be useful,
        but WITHOUT ANY WARRANTY; without even the implied warranty of
        MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        GNU General Public License for more details.

        You should have received a copy of the GNU General Public License
        along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
 */
#include <json/writer.h>
#include <libethashseal/Ethash.h>
#include <libethereum/BlockChain.h>
#include "BlockChainLoader.h"
#include "Common.h"
using namespace std;
using namespace dev;
using namespace dev::test;
using namespace dev::eth;

BlockChainLoader::BlockChainLoader(Json::Value const& _json, eth::Network _sealEngineNetwork):
        m_block(Block::Null)
{
        // load genesisBlock
        bytes genesisBlock = fromHex(_json["genesisRLP"].asString());

        Json::FastWriter a;
        m_bc.reset(new BlockChain(ChainParams(genesisInfo(_sealEngineNetwork), genesisBlock, jsonToAccountMap(a.write(_json["pre"]))), m_dir.path(), WithExisting::Kill));

        // load pre state
        m_block = m_bc->genesisBlock(State::openDB(m_dir.path(), m_bc->genesisHash(), WithExisting::Kill));

        assert(m_block.rootHash() == m_bc->info().stateRoot());

        // load blocks
        for (auto const& block: _json["blocks"])
        {
                bytes rlp = fromHex(block["rlp"].asString());
                m_bc->import(rlp, state().db());
        }

        // sync state
        m_block.sync(*m_bc);
}