352 lines
13 KiB
C++
352 lines
13 KiB
C++
// Copyright (c) 2009-2010 Satoshi Nakamoto
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// Copyright (c) 2009-2015 The Bitcoin Core developers
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// Distributed under the MIT software license, see the accompanying
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// file COPYING or http://www.opensource.org/licenses/mit-license.php.
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#include "txdb.h"
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#include "chain.h"
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#include "chainparams.h"
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#include "hash.h"
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#include "main.h"
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#include "pow.h"
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#include "uint256.h"
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#include <stdint.h>
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#include <boost/thread.hpp>
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using namespace std;
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static const char DB_COINS = 'c';
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static const char DB_BLOCK_FILES = 'f';
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static const char DB_TXINDEX = 't';
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static const char DB_ADDRESSINDEX = 'a';
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static const char DB_ADDRESSUNSPENTINDEX = 'u';
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static const char DB_TIMESTAMPINDEX = 's';
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static const char DB_SPENTINDEX = 'p';
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static const char DB_BLOCK_INDEX = 'b';
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static const char DB_BEST_BLOCK = 'B';
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static const char DB_FLAG = 'F';
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static const char DB_REINDEX_FLAG = 'R';
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static const char DB_LAST_BLOCK = 'l';
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CCoinsViewDB::CCoinsViewDB(size_t nCacheSize, bool fMemory, bool fWipe) : db(GetDataDir() / "chainstate", nCacheSize, fMemory, fWipe, true)
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{
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}
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bool CCoinsViewDB::GetCoins(const uint256 &txid, CCoins &coins) const {
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return db.Read(make_pair(DB_COINS, txid), coins);
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}
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bool CCoinsViewDB::HaveCoins(const uint256 &txid) const {
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return db.Exists(make_pair(DB_COINS, txid));
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}
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uint256 CCoinsViewDB::GetBestBlock() const {
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uint256 hashBestChain;
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if (!db.Read(DB_BEST_BLOCK, hashBestChain))
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return uint256();
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return hashBestChain;
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}
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bool CCoinsViewDB::BatchWrite(CCoinsMap &mapCoins, const uint256 &hashBlock) {
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CDBBatch batch(&db.GetObfuscateKey());
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size_t count = 0;
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size_t changed = 0;
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for (CCoinsMap::iterator it = mapCoins.begin(); it != mapCoins.end();) {
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if (it->second.flags & CCoinsCacheEntry::DIRTY) {
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if (it->second.coins.IsPruned())
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batch.Erase(make_pair(DB_COINS, it->first));
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else
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batch.Write(make_pair(DB_COINS, it->first), it->second.coins);
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changed++;
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}
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count++;
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CCoinsMap::iterator itOld = it++;
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mapCoins.erase(itOld);
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}
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if (!hashBlock.IsNull())
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batch.Write(DB_BEST_BLOCK, hashBlock);
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LogPrint("coindb", "Committing %u changed transactions (out of %u) to coin database...\n", (unsigned int)changed, (unsigned int)count);
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return db.WriteBatch(batch);
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}
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CBlockTreeDB::CBlockTreeDB(size_t nCacheSize, bool fMemory, bool fWipe) : CDBWrapper(GetDataDir() / "blocks" / "index", nCacheSize, fMemory, fWipe) {
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}
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bool CBlockTreeDB::ReadBlockFileInfo(int nFile, CBlockFileInfo &info) {
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return Read(make_pair(DB_BLOCK_FILES, nFile), info);
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}
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bool CBlockTreeDB::WriteReindexing(bool fReindexing) {
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if (fReindexing)
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return Write(DB_REINDEX_FLAG, '1');
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else
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return Erase(DB_REINDEX_FLAG);
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}
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bool CBlockTreeDB::ReadReindexing(bool &fReindexing) {
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fReindexing = Exists(DB_REINDEX_FLAG);
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return true;
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}
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bool CBlockTreeDB::ReadLastBlockFile(int &nFile) {
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return Read(DB_LAST_BLOCK, nFile);
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}
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bool CCoinsViewDB::GetStats(CCoinsStats &stats) const {
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/* It seems that there are no "const iterators" for LevelDB. Since we
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only need read operations on it, use a const-cast to get around
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that restriction. */
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boost::scoped_ptr<CDBIterator> pcursor(const_cast<CDBWrapper*>(&db)->NewIterator());
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pcursor->Seek(DB_COINS);
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CHashWriter ss(SER_GETHASH, PROTOCOL_VERSION);
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stats.hashBlock = GetBestBlock();
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ss << stats.hashBlock;
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CAmount nTotalAmount = 0;
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while (pcursor->Valid()) {
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boost::this_thread::interruption_point();
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std::pair<char, uint256> key;
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CCoins coins;
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if (pcursor->GetKey(key) && key.first == DB_COINS) {
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if (pcursor->GetValue(coins)) {
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stats.nTransactions++;
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for (unsigned int i=0; i<coins.vout.size(); i++) {
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const CTxOut &out = coins.vout[i];
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if (!out.IsNull()) {
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stats.nTransactionOutputs++;
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ss << VARINT(i+1);
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ss << out;
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nTotalAmount += out.nValue;
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}
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}
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stats.nSerializedSize += 32 + pcursor->GetValueSize();
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ss << VARINT(0);
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} else {
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return error("CCoinsViewDB::GetStats() : unable to read value");
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}
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} else {
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break;
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}
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pcursor->Next();
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}
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{
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LOCK(cs_main);
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stats.nHeight = mapBlockIndex.find(stats.hashBlock)->second->nHeight;
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}
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stats.hashSerialized = ss.GetHash();
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stats.nTotalAmount = nTotalAmount;
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return true;
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}
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bool CBlockTreeDB::WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo) {
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CDBBatch batch(&GetObfuscateKey());
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for (std::vector<std::pair<int, const CBlockFileInfo*> >::const_iterator it=fileInfo.begin(); it != fileInfo.end(); it++) {
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batch.Write(make_pair(DB_BLOCK_FILES, it->first), *it->second);
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}
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batch.Write(DB_LAST_BLOCK, nLastFile);
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for (std::vector<const CBlockIndex*>::const_iterator it=blockinfo.begin(); it != blockinfo.end(); it++) {
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batch.Write(make_pair(DB_BLOCK_INDEX, (*it)->GetBlockHash()), CDiskBlockIndex(*it));
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}
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return WriteBatch(batch, true);
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}
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bool CBlockTreeDB::ReadTxIndex(const uint256 &txid, CDiskTxPos &pos) {
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return Read(make_pair(DB_TXINDEX, txid), pos);
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}
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bool CBlockTreeDB::WriteTxIndex(const std::vector<std::pair<uint256, CDiskTxPos> >&vect) {
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CDBBatch batch(&GetObfuscateKey());
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for (std::vector<std::pair<uint256,CDiskTxPos> >::const_iterator it=vect.begin(); it!=vect.end(); it++)
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batch.Write(make_pair(DB_TXINDEX, it->first), it->second);
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return WriteBatch(batch);
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}
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bool CBlockTreeDB::ReadSpentIndex(CSpentIndexKey &key, CSpentIndexValue &value) {
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return Read(make_pair(DB_SPENTINDEX, key), value);
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}
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bool CBlockTreeDB::UpdateSpentIndex(const std::vector<std::pair<CSpentIndexKey, CSpentIndexValue> >&vect) {
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CDBBatch batch(&GetObfuscateKey());
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for (std::vector<std::pair<CSpentIndexKey,CSpentIndexValue> >::const_iterator it=vect.begin(); it!=vect.end(); it++) {
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if (it->second.IsNull()) {
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batch.Erase(make_pair(DB_SPENTINDEX, it->first));
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} else {
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batch.Write(make_pair(DB_SPENTINDEX, it->first), it->second);
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}
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}
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return WriteBatch(batch);
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}
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bool CBlockTreeDB::UpdateAddressUnspentIndex(const std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue > >&vect) {
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CDBBatch batch(&GetObfuscateKey());
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for (std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> >::const_iterator it=vect.begin(); it!=vect.end(); it++) {
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if (it->second.IsNull()) {
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batch.Erase(make_pair(DB_ADDRESSUNSPENTINDEX, it->first));
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} else {
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batch.Write(make_pair(DB_ADDRESSUNSPENTINDEX, it->first), it->second);
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}
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}
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return WriteBatch(batch);
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}
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bool CBlockTreeDB::ReadAddressUnspentIndex(uint160 addressHash, int type,
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std::vector<std::pair<CAddressUnspentKey, CAddressUnspentValue> > &unspentOutputs) {
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boost::scoped_ptr<CDBIterator> pcursor(NewIterator());
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pcursor->Seek(make_pair(DB_ADDRESSUNSPENTINDEX, CAddressIndexIteratorKey(type, addressHash)));
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while (pcursor->Valid()) {
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boost::this_thread::interruption_point();
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std::pair<char,CAddressUnspentKey> key;
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if (pcursor->GetKey(key) && key.first == DB_ADDRESSUNSPENTINDEX && key.second.hashBytes == addressHash) {
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CAddressUnspentValue nValue;
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if (pcursor->GetValue(nValue)) {
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unspentOutputs.push_back(make_pair(key.second, nValue));
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pcursor->Next();
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} else {
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return error("failed to get address unspent value");
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}
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} else {
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break;
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}
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}
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return true;
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}
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bool CBlockTreeDB::WriteAddressIndex(const std::vector<std::pair<CAddressIndexKey, CAmount > >&vect) {
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CDBBatch batch(&GetObfuscateKey());
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for (std::vector<std::pair<CAddressIndexKey, CAmount> >::const_iterator it=vect.begin(); it!=vect.end(); it++)
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batch.Write(make_pair(DB_ADDRESSINDEX, it->first), it->second);
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return WriteBatch(batch);
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}
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bool CBlockTreeDB::EraseAddressIndex(const std::vector<std::pair<CAddressIndexKey, CAmount > >&vect) {
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CDBBatch batch(&GetObfuscateKey());
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for (std::vector<std::pair<CAddressIndexKey, CAmount> >::const_iterator it=vect.begin(); it!=vect.end(); it++)
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batch.Erase(make_pair(DB_ADDRESSINDEX, it->first));
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return WriteBatch(batch);
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}
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bool CBlockTreeDB::ReadAddressIndex(uint160 addressHash, int type,
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std::vector<std::pair<CAddressIndexKey, CAmount> > &addressIndex,
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int start, int end) {
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boost::scoped_ptr<CDBIterator> pcursor(NewIterator());
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if (start > 0 && end > 0) {
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pcursor->Seek(make_pair(DB_ADDRESSINDEX, CAddressIndexIteratorHeightKey(type, addressHash, start)));
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} else {
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pcursor->Seek(make_pair(DB_ADDRESSINDEX, CAddressIndexIteratorKey(type, addressHash)));
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}
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while (pcursor->Valid()) {
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boost::this_thread::interruption_point();
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std::pair<char,CAddressIndexKey> key;
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if (pcursor->GetKey(key) && key.first == DB_ADDRESSINDEX && key.second.hashBytes == addressHash) {
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if (end > 0 && key.second.blockHeight > end) {
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break;
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}
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CAmount nValue;
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if (pcursor->GetValue(nValue)) {
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addressIndex.push_back(make_pair(key.second, nValue));
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pcursor->Next();
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} else {
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return error("failed to get address index value");
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}
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} else {
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break;
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}
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}
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return true;
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}
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bool CBlockTreeDB::WriteTimestampIndex(const CTimestampIndexKey ×tampIndex) {
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CDBBatch batch(&GetObfuscateKey());
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batch.Write(make_pair(DB_TIMESTAMPINDEX, timestampIndex), 0);
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return WriteBatch(batch);
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}
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bool CBlockTreeDB::ReadTimestampIndex(const unsigned int &high, const unsigned int &low, std::vector<uint256> &hashes) {
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boost::scoped_ptr<CDBIterator> pcursor(NewIterator());
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pcursor->Seek(make_pair(DB_TIMESTAMPINDEX, CTimestampIndexIteratorKey(low)));
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while (pcursor->Valid()) {
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boost::this_thread::interruption_point();
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std::pair<char, CTimestampIndexKey> key;
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if (pcursor->GetKey(key) && key.first == DB_TIMESTAMPINDEX && key.second.timestamp <= high) {
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hashes.push_back(key.second.blockHash);
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pcursor->Next();
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} else {
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break;
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}
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}
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return true;
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}
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bool CBlockTreeDB::WriteFlag(const std::string &name, bool fValue) {
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return Write(std::make_pair(DB_FLAG, name), fValue ? '1' : '0');
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}
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bool CBlockTreeDB::ReadFlag(const std::string &name, bool &fValue) {
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char ch;
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if (!Read(std::make_pair(DB_FLAG, name), ch))
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return false;
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fValue = ch == '1';
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return true;
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}
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bool CBlockTreeDB::LoadBlockIndexGuts()
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{
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boost::scoped_ptr<CDBIterator> pcursor(NewIterator());
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pcursor->Seek(make_pair(DB_BLOCK_INDEX, uint256()));
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// Load mapBlockIndex
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while (pcursor->Valid()) {
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boost::this_thread::interruption_point();
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std::pair<char, uint256> key;
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if (pcursor->GetKey(key) && key.first == DB_BLOCK_INDEX) {
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CDiskBlockIndex diskindex;
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if (pcursor->GetValue(diskindex)) {
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// Construct block index object
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CBlockIndex* pindexNew = InsertBlockIndex(diskindex.GetBlockHash());
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pindexNew->pprev = InsertBlockIndex(diskindex.hashPrev);
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pindexNew->nHeight = diskindex.nHeight;
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pindexNew->nFile = diskindex.nFile;
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pindexNew->nDataPos = diskindex.nDataPos;
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pindexNew->nUndoPos = diskindex.nUndoPos;
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pindexNew->nVersion = diskindex.nVersion;
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pindexNew->hashMerkleRoot = diskindex.hashMerkleRoot;
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pindexNew->nTime = diskindex.nTime;
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pindexNew->nBits = diskindex.nBits;
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pindexNew->nNonce = diskindex.nNonce;
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pindexNew->nStatus = diskindex.nStatus;
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pindexNew->nTx = diskindex.nTx;
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if (!CheckProofOfWork(pindexNew->GetBlockHash(), pindexNew->nBits, Params().GetConsensus()))
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return error("LoadBlockIndex(): CheckProofOfWork failed: %s", pindexNew->ToString());
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pcursor->Next();
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} else {
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return error("LoadBlockIndex() : failed to read value");
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}
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} else {
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break;
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}
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}
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return true;
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}
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