diff options
Diffstat (limited to 'core/chain_util.go')
| -rw-r--r-- | core/chain_util.go | 212 |
1 files changed, 116 insertions, 96 deletions
diff --git a/core/chain_util.go b/core/chain_util.go index c12bdda75..0e3fa31f9 100644 --- a/core/chain_util.go +++ b/core/chain_util.go @@ -29,14 +29,18 @@ import ( ) var ( - headKey = []byte("LastBlock") + headHeaderKey = []byte("LastHeader") + headBlockKey = []byte("LastBlock") - headerHashPre = []byte("header-hash-") - bodyHashPre = []byte("body-hash-") - blockNumPre = []byte("block-num-") - ExpDiffPeriod = big.NewInt(100000) + blockPrefix = []byte("block-") + blockNumPrefix = []byte("block-num-") + + headerSuffix = []byte("-header") + bodySuffix = []byte("-body") + tdSuffix = []byte("-td") - blockHashPre = []byte("block-hash-") // [deprecated by eth/63] + ExpDiffPeriod = big.NewInt(100000) + blockHashPre = []byte("block-hash-") // [deprecated by eth/63] ) // CalcDifficulty is the difficulty adjustment algorithm. It returns @@ -73,16 +77,6 @@ func CalcDifficulty(time, parentTime uint64, parentNumber, parentDiff *big.Int) return diff } -// CalcTD computes the total difficulty of block. -func CalcTD(block, parent *types.Block) *big.Int { - if parent == nil { - return block.Difficulty() - } - d := block.Difficulty() - d.Add(d, parent.Td) - return d -} - // CalcGasLimit computes the gas limit of the next block after parent. // The result may be modified by the caller. // This is miner strategy, not consensus protocol. @@ -116,41 +110,48 @@ func CalcGasLimit(parent *types.Block) *big.Int { return gl } -// storageBody is the block body encoding used for the database. -type storageBody struct { - Transactions []*types.Transaction - Uncles []*types.Header +// GetCanonicalHash retrieves a hash assigned to a canonical block number. +func GetCanonicalHash(db common.Database, number uint64) common.Hash { + data, _ := db.Get(append(blockNumPrefix, big.NewInt(int64(number)).Bytes()...)) + if len(data) == 0 { + return common.Hash{} + } + return common.BytesToHash(data) } -// GetHashByNumber retrieves a hash assigned to a canonical block number. -func GetHashByNumber(db common.Database, number uint64) common.Hash { - data, _ := db.Get(append(blockNumPre, big.NewInt(int64(number)).Bytes()...)) +// GetHeadHeaderHash retrieves the hash of the current canonical head block's +// header. The difference between this and GetHeadBlockHash is that whereas the +// last block hash is only updated upon a full block import, the last header +// hash is updated already at header import, allowing head tracking for the +// fast synchronization mechanism. +func GetHeadHeaderHash(db common.Database) common.Hash { + data, _ := db.Get(headHeaderKey) if len(data) == 0 { return common.Hash{} } return common.BytesToHash(data) } -// GetHeadHash retrieves the hash of the current canonical head block. -func GetHeadHash(db common.Database) common.Hash { - data, _ := db.Get(headKey) +// GetHeadBlockHash retrieves the hash of the current canonical head block. +func GetHeadBlockHash(db common.Database) common.Hash { + data, _ := db.Get(headBlockKey) if len(data) == 0 { return common.Hash{} } return common.BytesToHash(data) } -// GetHeaderRLPByHash retrieves a block header in its raw RLP database encoding, -// or nil if the header's not found. -func GetHeaderRLPByHash(db common.Database, hash common.Hash) []byte { - data, _ := db.Get(append(headerHashPre, hash[:]...)) +// GetHeaderRLP retrieves a block header in its raw RLP database encoding, or nil +// if the header's not found. +func GetHeaderRLP(db common.Database, hash common.Hash) rlp.RawValue { + data, _ := db.Get(append(append(blockPrefix, hash[:]...), headerSuffix...)) return data } -// GetHeaderByHash retrieves the block header corresponding to the hash, nil if -// none found. -func GetHeaderByHash(db common.Database, hash common.Hash) *types.Header { - data := GetHeaderRLPByHash(db, hash) +// GetHeader retrieves the block header corresponding to the hash, nil if none +// found. +func GetHeader(db common.Database, hash common.Hash) *types.Header { + data := GetHeaderRLP(db, hash) if len(data) == 0 { return nil } @@ -162,69 +163,61 @@ func GetHeaderByHash(db common.Database, hash common.Hash) *types.Header { return header } -// GetBodyRLPByHash retrieves the block body (transactions and uncles) in RLP -// encoding, and the associated total difficulty. -func GetBodyRLPByHash(db common.Database, hash common.Hash) ([]byte, *big.Int) { - combo, _ := db.Get(append(bodyHashPre, hash[:]...)) - if len(combo) == 0 { - return nil, nil - } - buffer := bytes.NewBuffer(combo) - - td := new(big.Int) - if err := rlp.Decode(buffer, td); err != nil { - glog.V(logger.Error).Infof("invalid block td RLP for hash %x: %v", hash, err) - return nil, nil - } - return buffer.Bytes(), td +// GetBodyRLP retrieves the block body (transactions and uncles) in RLP encoding. +func GetBodyRLP(db common.Database, hash common.Hash) rlp.RawValue { + data, _ := db.Get(append(append(blockPrefix, hash[:]...), bodySuffix...)) + return data } -// GetBodyByHash retrieves the block body (transactons, uncles, total difficulty) -// corresponding to the hash, nils if none found. -func GetBodyByHash(db common.Database, hash common.Hash) ([]*types.Transaction, []*types.Header, *big.Int) { - data, td := GetBodyRLPByHash(db, hash) - if len(data) == 0 || td == nil { - return nil, nil, nil +// GetBody retrieves the block body (transactons, uncles) corresponding to the +// hash, nil if none found. +func GetBody(db common.Database, hash common.Hash) *types.Body { + data := GetBodyRLP(db, hash) + if len(data) == 0 { + return nil } - body := new(storageBody) + body := new(types.Body) if err := rlp.Decode(bytes.NewReader(data), body); err != nil { glog.V(logger.Error).Infof("invalid block body RLP for hash %x: %v", hash, err) - return nil, nil, nil + return nil } - return body.Transactions, body.Uncles, td + return body } -// GetBlockByHash retrieves an entire block corresponding to the hash, assembling -// it back from the stored header and body. -func GetBlockByHash(db common.Database, hash common.Hash) *types.Block { - // Retrieve the block header and body contents - header := GetHeaderByHash(db, hash) - if header == nil { +// GetTd retrieves a block's total difficulty corresponding to the hash, nil if +// none found. +func GetTd(db common.Database, hash common.Hash) *big.Int { + data, _ := db.Get(append(append(blockPrefix, hash.Bytes()...), tdSuffix...)) + if len(data) == 0 { return nil } - transactions, uncles, td := GetBodyByHash(db, hash) - if td == nil { + td := new(big.Int) + if err := rlp.Decode(bytes.NewReader(data), td); err != nil { + glog.V(logger.Error).Infof("invalid block total difficulty RLP for hash %x: %v", hash, err) return nil } - // Reassemble the block and return - block := types.NewBlockWithHeader(header).WithBody(transactions, uncles) - block.Td = td - - return block + return td } -// GetBlockByNumber returns the canonical block by number or nil if not found. -func GetBlockByNumber(db common.Database, number uint64) *types.Block { - key, _ := db.Get(append(blockNumPre, big.NewInt(int64(number)).Bytes()...)) - if len(key) == 0 { +// GetBlock retrieves an entire block corresponding to the hash, assembling it +// back from the stored header and body. +func GetBlock(db common.Database, hash common.Hash) *types.Block { + // Retrieve the block header and body contents + header := GetHeader(db, hash) + if header == nil { + return nil + } + body := GetBody(db, hash) + if body == nil { return nil } - return GetBlockByHash(db, common.BytesToHash(key)) + // Reassemble the block and return + return types.NewBlockWithHeader(header).WithBody(body.Transactions, body.Uncles) } -// WriteCanonNumber stores the canonical hash for the given block number. -func WriteCanonNumber(db common.Database, hash common.Hash, number uint64) error { - key := append(blockNumPre, big.NewInt(int64(number)).Bytes()...) +// WriteCanonicalHash stores the canonical hash for the given block number. +func WriteCanonicalHash(db common.Database, hash common.Hash, number uint64) error { + key := append(blockNumPrefix, big.NewInt(int64(number)).Bytes()...) if err := db.Put(key, hash.Bytes()); err != nil { glog.Fatalf("failed to store number to hash mapping into database: %v", err) return err @@ -232,14 +225,19 @@ func WriteCanonNumber(db common.Database, hash common.Hash, number uint64) error return nil } -// WriteHead updates the head block of the chain database. -func WriteHead(db common.Database, block *types.Block) error { - if err := WriteCanonNumber(db, block.Hash(), block.NumberU64()); err != nil { - glog.Fatalf("failed to store canonical number into database: %v", err) +// WriteHeadHeaderHash stores the head header's hash. +func WriteHeadHeaderHash(db common.Database, hash common.Hash) error { + if err := db.Put(headHeaderKey, hash.Bytes()); err != nil { + glog.Fatalf("failed to store last header's hash into database: %v", err) return err } - if err := db.Put(headKey, block.Hash().Bytes()); err != nil { - glog.Fatalf("failed to store last block into database: %v", err) + return nil +} + +// WriteHeadBlockHash stores the head block's hash. +func WriteHeadBlockHash(db common.Database, hash common.Hash) error { + if err := db.Put(headBlockKey, hash.Bytes()); err != nil { + glog.Fatalf("failed to store last block's hash into database: %v", err) return err } return nil @@ -251,7 +249,7 @@ func WriteHeader(db common.Database, header *types.Header) error { if err != nil { return err } - key := append(headerHashPre, header.Hash().Bytes()...) + key := append(append(blockPrefix, header.Hash().Bytes()...), headerSuffix...) if err := db.Put(key, data); err != nil { glog.Fatalf("failed to store header into database: %v", err) return err @@ -261,28 +259,39 @@ func WriteHeader(db common.Database, header *types.Header) error { } // WriteBody serializes the body of a block into the database. -func WriteBody(db common.Database, block *types.Block) error { - body, err := rlp.EncodeToBytes(&storageBody{block.Transactions(), block.Uncles()}) +func WriteBody(db common.Database, hash common.Hash, body *types.Body) error { + data, err := rlp.EncodeToBytes(body) if err != nil { return err } - td, err := rlp.EncodeToBytes(block.Td) + key := append(append(blockPrefix, hash.Bytes()...), bodySuffix...) + if err := db.Put(key, data); err != nil { + glog.Fatalf("failed to store block body into database: %v", err) + return err + } + glog.V(logger.Debug).Infof("stored block body [%x…]", hash.Bytes()[:4]) + return nil +} + +// WriteTd serializes the total difficulty of a block into the database. +func WriteTd(db common.Database, hash common.Hash, td *big.Int) error { + data, err := rlp.EncodeToBytes(td) if err != nil { return err } - key := append(bodyHashPre, block.Hash().Bytes()...) - if err := db.Put(key, append(td, body...)); err != nil { - glog.Fatalf("failed to store block body into database: %v", err) + key := append(append(blockPrefix, hash.Bytes()...), tdSuffix...) + if err := db.Put(key, data); err != nil { + glog.Fatalf("failed to store block total difficulty into database: %v", err) return err } - glog.V(logger.Debug).Infof("stored block body #%v [%x…]", block.Number, block.Hash().Bytes()[:4]) + glog.V(logger.Debug).Infof("stored block total difficulty [%x…]: %v", hash.Bytes()[:4], td) return nil } // WriteBlock serializes a block into the database, header and body separately. func WriteBlock(db common.Database, block *types.Block) error { // Store the body first to retain database consistency - if err := WriteBody(db, block); err != nil { + if err := WriteBody(db, block.Hash(), &types.Body{block.Transactions(), block.Uncles()}); err != nil { return err } // Store the header too, signaling full block ownership @@ -292,20 +301,31 @@ func WriteBlock(db common.Database, block *types.Block) error { return nil } +// DeleteCanonicalHash removes the number to hash canonical mapping. +func DeleteCanonicalHash(db common.Database, number uint64) { + db.Delete(append(blockNumPrefix, big.NewInt(int64(number)).Bytes()...)) +} + // DeleteHeader removes all block header data associated with a hash. func DeleteHeader(db common.Database, hash common.Hash) { - db.Delete(append(headerHashPre, hash.Bytes()...)) + db.Delete(append(append(blockPrefix, hash.Bytes()...), headerSuffix...)) } // DeleteBody removes all block body data associated with a hash. func DeleteBody(db common.Database, hash common.Hash) { - db.Delete(append(bodyHashPre, hash.Bytes()...)) + db.Delete(append(append(blockPrefix, hash.Bytes()...), bodySuffix...)) +} + +// DeleteTd removes all block total difficulty data associated with a hash. +func DeleteTd(db common.Database, hash common.Hash) { + db.Delete(append(append(blockPrefix, hash.Bytes()...), tdSuffix...)) } // DeleteBlock removes all block data associated with a hash. func DeleteBlock(db common.Database, hash common.Hash) { DeleteHeader(db, hash) DeleteBody(db, hash) + DeleteTd(db, hash) } // [deprecated by eth/63] |