revise leveldb parser. add chainstate parser.
This commit is contained in:
Christopher Jeffrey
parent
b740185c69
commit
6970f8a593
@ -607,6 +607,11 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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static bool
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get_block_by_tx(const std::string itxhash, CBlock& rcblock, CBlockIndex **rcblock_index);
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#if 0
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static bool
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get_block_by_tx_unspent(const std::string itxhash, CBlock& rcblock, CBlockIndex **rcblock_index);
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#endif
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/**
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* Functions
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*/
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@ -6209,6 +6214,12 @@ jstx_to_ctx(const Local<Object> jstx, CTransaction& ctx_) {
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}
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#if USE_LDB_ADDR
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/**
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LevelDB Parser
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DB: blocks/blk/revXXXXX.dat
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*/
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static ctx_list *
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read_addr(const std::string addr, const int64_t blockheight, const int64_t blocktime) {
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ctx_list *head = new ctx_list();
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@ -6235,7 +6246,8 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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// Blockchain Index Structure:
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// http://bitcoin.stackexchange.com/questions/28168
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// File info record structure (Key: 4-byte file number)
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// File info record structure
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// 'f' + 4-byte file number
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// Number of blocks stored in block file
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// Size of block file: blocks/blkXXXXX.dat
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// Size of undo file: blocks/revXXXXX.dat
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@ -6245,31 +6257,35 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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goto next;
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}
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// Last block file number used structure (Key: no key)
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// Last block file number used structure
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// 'l'
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// 4-byte file number
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if (type == 'l') {
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goto next;
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}
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// Reindexing structure (Key: no key)
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// Reindexing structure
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// 'R'
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// 1-byte Boolean (1 if reindexing)
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if (type == 'R') {
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goto next;
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}
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// Flags structure (Key: 1-byte flag name + flag name string)
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// Flags structure
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// 'F' + 1-byte flag name + flag name string
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// 1-byte Boolean (key may be `txindex` if transaction index is enabled)
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if (type == 'F') {
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goto next;
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}
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// Block Structure:
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// CBlockHeader - headers
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// nHeight
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// nTx
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// validation state
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// CDiskBlockPos - block file and pos
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// CDiskBlockPos - undo file and pos
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// 'b' + 32-byte block hash
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// The block header
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// The block height
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// The number of transactions
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// The block validation state
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// The block file and pos
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// The undo file and pos
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if (type == 'b') {
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leveldb::Slice slValue = pcursor->value();
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@ -6278,17 +6294,41 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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uint256 blockhash;
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ssKey >> blockhash;
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// class CBlockIndex {
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// const uint256* phashBlock;
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// CBlockIndex* pprev;
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// CBlockIndex* pskip;
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// int nHeight;
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// int nFile;
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// unsigned int nDataPos;
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// unsigned int nUndoPos;
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// uint256 nChainWork;
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// unsigned int nTx;
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// unsigned int nChainTx;
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// unsigned int nStatus;
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// int nVersion;
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// uint256 hashMerkleRoot;
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// unsigned int nTime;
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// unsigned int nBits;
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// unsigned int nNonce;
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// uint32_t nSequenceId;
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// };
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// class CDiskBlockIndex : public CBlockIndex {
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// uint256 hashPrev;
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// };
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CDiskBlockIndex index;
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ssValue >> index;
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//if (blockheight != -1 && index.nHeight < blockheight) {
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// goto next;
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//}
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if (blocktime != -1 && index.GetBlockTime() < blocktime) {
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goto next;
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}
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// struct CDiskBlockPos {
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// int nFile;
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// unsigned int nPos;
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// };
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CDiskBlockPos blockPos;
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blockPos.nFile = index.nFile;
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blockPos.nPos = index.nDataPos;
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@ -6353,9 +6393,10 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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}
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// Transaction Structure:
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// CDiskBlockPos.nFile - block file
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// CDiskBlockPos.nPos - block pos
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// CDiskTxPos.nTxOffset - offset from top of block
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// 't' + 32-byte tx hash
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// Which block file the tx is stored in
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// Which offset in the block file the tx resides
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// The offset from the top of the block containing the tx
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if (type == 't') {
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leveldb::Slice slValue = pcursor->value();
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@ -6364,16 +6405,13 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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uint256 txhash;
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ssKey >> txhash;
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// CDiskBlockPos blockPos;
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// ssValue >> blockPos.nFile;
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// ssValue >> blockPos.nPos;
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// CDiskTxPos txPos;
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// // ssValue >> txPos.nFile;
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// // ssValue >> txPos.nPos;
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// txPos.nFile = blockPos.nFile;
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// txPos.nPos = blockPos.nPos;
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// ssValue >> txPos.nTxOffset;
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// struct CDiskBlockPos {
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// int nFile;
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// unsigned int nPos;
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// };
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// struct CDiskTxPos : public CDiskBlockPos {
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// unsigned int nTxOffset;
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// };
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CDiskTxPos txPos;
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ssValue >> txPos;
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@ -6453,13 +6491,9 @@ read_addr(const std::string addr, const int64_t blockheight, const int64_t block
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next:
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pcursor->Next();
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} catch (std::exception &e) {
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//pcursor->Next();
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//continue;
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leveldb::Slice lastKey = pcursor->key();
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std::string lastKeyHex = HexStr(lastKey.ToString());
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head->err_msg = std::string(e.what()
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+ std::string(" : Deserialize error. Key: ")
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+ lastKeyHex);
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+ pcursor->key().ToString());
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delete pcursor;
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return head;
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}
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@ -6476,6 +6510,11 @@ error:
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}
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#endif
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/**
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LevelDB Parser
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DB: blocks/blk/revXXXXX.dat
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*/
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static bool
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get_block_by_tx(const std::string itxhash, CBlock& rcblock, CBlockIndex **rcblock_index) {
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leveldb::Iterator* pcursor = pblocktree->pdb->NewIterator(pblocktree->iteroptions);
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@ -6492,6 +6531,14 @@ get_block_by_tx(const std::string itxhash, CBlock& rcblock, CBlockIndex **rcbloc
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char type;
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ssKey >> type;
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// Blockchain Index Structure:
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// http://bitcoin.stackexchange.com/questions/28168
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// Transaction Structure:
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// 't' + 32-byte tx hash
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// Which block file the tx is stored in
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// Which offset in the block file the tx resides
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// The offset from the top of the block containing the tx
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if (type == 't') {
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uint256 txhash;
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ssKey >> txhash;
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@ -6500,16 +6547,13 @@ get_block_by_tx(const std::string itxhash, CBlock& rcblock, CBlockIndex **rcbloc
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CDataStream ssValue(slValue.data(), slValue.data() + slValue.size(), SER_DISK, CLIENT_VERSION);
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// CDiskBlockPos blockPos;
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// ssValue >> blockPos.nFile;
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// ssValue >> blockPos.nPos;
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// CDiskTxPos txPos;
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// // ssValue >> txPos.nFile;
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// // ssValue >> txPos.nPos;
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// txPos.nFile = blockPos.nFile;
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// txPos.nPos = blockPos.nPos;
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// ssValue >> txPos.nTxOffset;
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// struct CDiskBlockPos {
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// int nFile;
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// unsigned int nPos;
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// };
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// struct CDiskTxPos : public CDiskBlockPos {
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// unsigned int nTxOffset;
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// };
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CDiskTxPos txPos;
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ssValue >> txPos;
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@ -6559,6 +6603,96 @@ error:
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return false;
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}
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#if 0
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/**
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LevelDB Parser
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DB: chainstate*
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*/
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// XXX static - will not work:
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// extern CCoinsViewDB *pcoinsdbview;
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static bool
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get_block_by_tx_unspent(const std::string itxhash, CBlock& rcblock, CBlockIndex **rcblock_index) {
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// XXX Will not work - db is protected property:
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CCoinsViewDB *pcoinsdbview = new CCoinsViewDB(nCoinDBCache, false, fReindex);
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bool fReindex = GetBoolArg("-reindex", false);
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size_t nCoinDBCache = (GetArg("-dbcache", nDefaultDbCache) << 20) / 2;
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nCoinCacheSize = nCoinDBCache / 300;
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boost::scoped_ptr<leveldb::Iterator> pcursor(const_cast<CLevelDBWrapper*>(&pcoinsdbview->db)->NewIterator());
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pcursor->SeekToFirst();
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while (pcursor->Valid()) {
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boost::this_thread::interruption_point();
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try {
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leveldb::Slice slKey = pcursor->key();
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CDataStream ssKey(slKey.data(), slKey.data() + slKey.size(), SER_DISK, CLIENT_VERSION);
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char type;
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ssKey >> type;
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// Blockchain Index Structure:
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// http://bitcoin.stackexchange.com/questions/28168
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// Unspent Output Transaction Structure:
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// 'c' + 32-byte tx hash
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// Version of the tx
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// Whether transaction was a coinbase
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// Which height block contains the tx
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// Which outputs of the tx are unspent
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// The scriptPubKey and amount for these unspent outputs
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if (type == 'c') {
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uint256 txhash;
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ssKey >> txhash;
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if (txhash.GetHex() == itxhash) {
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leveldb::Slice slValue = pcursor->value();
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CDataStream ssValue(slValue.data(), slValue.data() + slValue.size(), SER_DISK, CLIENT_VERSION);
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// class CCoins {
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// bool fCoinBase;
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// std::vector<CTxOut> vout;
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// int nHeight;
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// int nVersion;
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// }
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CCoins coins;
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ssValue >> coins;
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CBlockIndex* pblockindex = chainActive[coins.nHeight];
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CBlock cblock;
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if (ReadBlockFromDisk(cblock, pblockindex)) {
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*rcblock_index = pblockindex;
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return true;
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}
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goto error;
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}
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}
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// Unspent Output Block Hash Structure
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// 'B' + 32-byte block hash: The block hash up to which the db represents
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// the unspent tx outputs
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if (type == 'B') {
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uint256 blockhash;
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ssKey >> blockhash;
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// CDataStream ssValue(slValue.data(), slValue.data() + slValue.size(), SER_DISK, CLIENT_VERSION);
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// uint256 blockhash;
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// ssValue >> blockhash;
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}
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pcursor->Next();
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} catch (std::exception &e) {
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return false;
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}
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}
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error:
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return false;
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}
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#endif
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static int64_t
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SatoshiFromAmount(const CAmount& amount) {
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return (int64_t)amount;
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