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change hardcoded character constants to a set of descriptive named constants for database keys

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Earlz 2015-01-25 10:27:54 -05:00
parent 40e96a3016
commit 14d023f1ae
1 changed files with 32 additions and 21 deletions
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53
src/txdb.cpp
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@ -14,31 +14,42 @@
using namespace std;
static const char DB_COINS = 'c';
static const char DB_BLOCK_FILES = 'f';
static const char DB_TXINDEX = 't';
static const char DB_BLOCK_INDEX = 'b';
static const char DB_BEST_BLOCK = 'B';
static const char DB_FLAG = 'F';
static const char DB_REINDEX_FLAG = 'R';
static const char DB_LAST_BLOCK = 'l';
void static BatchWriteCoins(CLevelDBBatch &batch, const uint256 &hash, const CCoins &coins) {
if (coins.IsPruned())
batch.Erase(make_pair('c', hash));
batch.Erase(make_pair(DB_COINS, hash));
else
batch.Write(make_pair('c', hash), coins);
batch.Write(make_pair(DB_COINS, hash), coins);
}
void static BatchWriteHashBestChain(CLevelDBBatch &batch, const uint256 &hash) {
batch.Write('B', hash);
batch.Write(DB_BEST_BLOCK, hash);
}
CCoinsViewDB::CCoinsViewDB(size_t nCacheSize, bool fMemory, bool fWipe) : db(GetDataDir() / "chainstate", nCacheSize, fMemory, fWipe) {
}
bool CCoinsViewDB::GetCoins(const uint256 &txid, CCoins &coins) const {
return db.Read(make_pair('c', txid), coins);
return db.Read(make_pair(DB_COINS, txid), coins);
}
bool CCoinsViewDB::HaveCoins(const uint256 &txid) const {
return db.Exists(make_pair('c', txid));
return db.Exists(make_pair(DB_COINS, txid));
}
uint256 CCoinsViewDB::GetBestBlock() const {
uint256 hashBestChain;
if (!db.Read('B', hashBestChain))
if (!db.Read(DB_BEST_BLOCK, hashBestChain))
return uint256();
return hashBestChain;
}
@ -67,23 +78,23 @@ CBlockTreeDB::CBlockTreeDB(size_t nCacheSize, bool fMemory, bool fWipe) : CLevel
}
bool CBlockTreeDB::ReadBlockFileInfo(int nFile, CBlockFileInfo &info) {
return Read(make_pair('f', nFile), info);
return Read(make_pair(DB_BLOCK_FILES, nFile), info);
}
bool CBlockTreeDB::WriteReindexing(bool fReindexing) {
if (fReindexing)
return Write('R', '1');
return Write(DB_REINDEX_FLAG, '1');
else
return Erase('R');
return Erase(DB_REINDEX_FLAG);
}
bool CBlockTreeDB::ReadReindexing(bool &fReindexing) {
fReindexing = Exists('R');
fReindexing = Exists(DB_REINDEX_FLAG);
return true;
}
bool CBlockTreeDB::ReadLastBlockFile(int &nFile) {
return Read('l', nFile);
return Read(DB_LAST_BLOCK, nFile);
}
bool CCoinsViewDB::GetStats(CCoinsStats &stats) const {
@ -104,7 +115,7 @@ bool CCoinsViewDB::GetStats(CCoinsStats &stats) const {
CDataStream ssKey(slKey.data(), slKey.data()+slKey.size(), SER_DISK, CLIENT_VERSION);
char chType;
ssKey >> chType;
if (chType == 'c') {
if (chType == DB_COINS) {
leveldb::Slice slValue = pcursor->value();
CDataStream ssValue(slValue.data(), slValue.data()+slValue.size(), SER_DISK, CLIENT_VERSION);
CCoins coins;
@ -142,33 +153,33 @@ bool CCoinsViewDB::GetStats(CCoinsStats &stats) const {
bool CBlockTreeDB::WriteBatchSync(const std::vector<std::pair<int, const CBlockFileInfo*> >& fileInfo, int nLastFile, const std::vector<const CBlockIndex*>& blockinfo) {
CLevelDBBatch batch;
for (std::vector<std::pair<int, const CBlockFileInfo*> >::const_iterator it=fileInfo.begin(); it != fileInfo.end(); it++) {
batch.Write(make_pair('f', it->first), *it->second);
batch.Write(make_pair(DB_BLOCK_FILES, it->first), *it->second);
}
batch.Write('l', nLastFile);
batch.Write(DB_LAST_BLOCK, nLastFile);
for (std::vector<const CBlockIndex*>::const_iterator it=blockinfo.begin(); it != blockinfo.end(); it++) {
batch.Write(make_pair('b', (*it)->GetBlockHash()), CDiskBlockIndex(*it));
batch.Write(make_pair(DB_BLOCK_INDEX, (*it)->GetBlockHash()), CDiskBlockIndex(*it));
}
return WriteBatch(batch, true);
}
bool CBlockTreeDB::ReadTxIndex(const uint256 &txid, CDiskTxPos &pos) {
return Read(make_pair('t', txid), pos);
return Read(make_pair(DB_TXINDEX, txid), pos);
}
bool CBlockTreeDB::WriteTxIndex(const std::vector<std::pair<uint256, CDiskTxPos> >&vect) {
CLevelDBBatch batch;
for (std::vector<std::pair<uint256,CDiskTxPos> >::const_iterator it=vect.begin(); it!=vect.end(); it++)
batch.Write(make_pair('t', it->first), it->second);
batch.Write(make_pair(DB_TXINDEX, it->first), it->second);
return WriteBatch(batch);
}
bool CBlockTreeDB::WriteFlag(const std::string &name, bool fValue) {
return Write(std::make_pair('F', name), fValue ? '1' : '0');
return Write(std::make_pair(DB_FLAG, name), fValue ? '1' : '0');
}
bool CBlockTreeDB::ReadFlag(const std::string &name, bool &fValue) {
char ch;
if (!Read(std::make_pair('F', name), ch))
if (!Read(std::make_pair(DB_FLAG, name), ch))
return false;
fValue = ch == '1';
return true;
@ -179,7 +190,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
boost::scoped_ptr<leveldb::Iterator> pcursor(NewIterator());
CDataStream ssKeySet(SER_DISK, CLIENT_VERSION);
ssKeySet << make_pair('b', uint256());
ssKeySet << make_pair(DB_BLOCK_INDEX, uint256());
pcursor->Seek(ssKeySet.str());
// Load mapBlockIndex
@ -190,7 +201,7 @@ bool CBlockTreeDB::LoadBlockIndexGuts()
CDataStream ssKey(slKey.data(), slKey.data()+slKey.size(), SER_DISK, CLIENT_VERSION);
char chType;
ssKey >> chType;
if (chType == 'b') {
if (chType == DB_BLOCK_INDEX) {
leveldb::Slice slValue = pcursor->value();
CDataStream ssValue(slValue.data(), slValue.data()+slValue.size(), SER_DISK, CLIENT_VERSION);
CDiskBlockIndex diskindex;