TomZ
80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
/*
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* This file is part of the Flowee project
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* Copyright (C) 2020 Tom Zander <tomz@freedommail.ch>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef BLOCKCHAIN_H
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#define BLOCKCHAIN_H
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#include "BlockHeader.h"
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#include <Message.h>
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#include <arith_uint256.h>
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#include <uint256.h>
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#include <boost/unordered_map.hpp>
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#include <boost/filesystem.hpp>
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#include <mutex>
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class DownloadManager;
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namespace Streaming {
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class P2PBuilder;
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}
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class Blockchain
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{
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public:
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Blockchain(DownloadManager *downloadManager, const boost::filesystem::path &basedir);
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Message createGetHeadersRequest(Streaming::P2PBuilder &builder);
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void processBlockHeaders(Message message, int peerId);
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int height() const;
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int expectedBlockHeight() const;
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bool isKnown(const uint256 &blockId) const;
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int blockHeightFor(const uint256 &blockId) const;
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BlockHeader block(int height) const;
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/// re-load the chain. Also called from the constructor.
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void load();
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/// save the chain
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void save();
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private:
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mutable std::mutex m_lock;
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const boost::filesystem::path m_basedir;
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std::vector<BlockHeader> m_longestChain;
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struct ChainTip {
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uint256 tip;
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int height;
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arith_uint256 chainWork;
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};
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ChainTip m_tip;
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typedef boost::unordered_map<uint256, int, HashShortener> BlockHeightMap;
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BlockHeightMap m_blockHeight;
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DownloadManager *m_dlmanager;
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// consensus
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const uint256 powLimit = uint256S("00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff");
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std::map<int, uint256> checkpoints;
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};
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#endif
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