diff options
Diffstat (limited to 'core/chain_util.go')
| -rw-r--r-- | core/chain_util.go | 258 |
1 files changed, 213 insertions, 45 deletions
diff --git a/core/chain_util.go b/core/chain_util.go index 84b462ce3..0e3fa31f9 100644 --- a/core/chain_util.go +++ b/core/chain_util.go @@ -19,7 +19,6 @@ package core import ( "bytes" "math/big" - "time" "github.com/ethereum/go-ethereum/common" "github.com/ethereum/go-ethereum/core/types" @@ -30,9 +29,18 @@ import ( ) var ( - blockHashPre = []byte("block-hash-") - blockNumPre = []byte("block-num-") + headHeaderKey = []byte("LastHeader") + headBlockKey = []byte("LastBlock") + + blockPrefix = []byte("block-") + blockNumPrefix = []byte("block-num-") + + headerSuffix = []byte("-header") + bodySuffix = []byte("-body") + tdSuffix = []byte("-td") + ExpDiffPeriod = big.NewInt(100000) + blockHashPre = []byte("block-hash-") // [deprecated by eth/63] ) // CalcDifficulty is the difficulty adjustment algorithm. It returns @@ -69,16 +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. @@ -112,68 +110,238 @@ func CalcGasLimit(parent *types.Block) *big.Int { return gl } -// GetBlockByHash returns the block corresponding to the hash or nil if not found -func GetBlockByHash(db common.Database, hash common.Hash) *types.Block { - data, _ := db.Get(append(blockHashPre, hash[:]...)) +// 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) +} + +// 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) +} + +// 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) +} + +// 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 +} + +// 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 } - var block types.StorageBlock - if err := rlp.Decode(bytes.NewReader(data), &block); err != nil { - glog.V(logger.Error).Infof("invalid block RLP for hash %x: %v", hash, err) + header := new(types.Header) + if err := rlp.Decode(bytes.NewReader(data), header); err != nil { + glog.V(logger.Error).Infof("invalid block header RLP for hash %x: %v", hash, err) return nil } - return (*types.Block)(&block) + return header +} + +// 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 } -// GetBlockByHash 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 { +// 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(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 } + return body +} - return GetBlockByHash(db, common.BytesToHash(key)) +// 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 + } + 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 + } + return td } -// WriteCanonNumber writes the canonical hash for the given block -func WriteCanonNumber(db common.Database, block *types.Block) error { - key := append(blockNumPre, block.Number().Bytes()...) - err := db.Put(key, block.Hash().Bytes()) - if err != nil { +// 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 + } + // Reassemble the block and return + return types.NewBlockWithHeader(header).WithBody(body.Transactions, body.Uncles) +} + +// 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 } return nil } -// WriteHead force writes the current head -func WriteHead(db common.Database, block *types.Block) error { - err := WriteCanonNumber(db, block) - if err != nil { +// 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 } - err = db.Put([]byte("LastBlock"), block.Hash().Bytes()) - if err != nil { + 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 } -// WriteBlock writes a block to the database -func WriteBlock(db common.Database, block *types.Block) error { - tstart := time.Now() +// WriteHeader serializes a block header into the database. +func WriteHeader(db common.Database, header *types.Header) error { + data, err := rlp.EncodeToBytes(header) + if err != nil { + return err + } + 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 + } + glog.V(logger.Debug).Infof("stored header #%v [%x…]", header.Number, header.Hash().Bytes()[:4]) + return nil +} - enc, _ := rlp.EncodeToBytes((*types.StorageBlock)(block)) - key := append(blockHashPre, block.Hash().Bytes()...) - err := db.Put(key, enc) +// WriteBody serializes the body of a block into the database. +func WriteBody(db common.Database, hash common.Hash, body *types.Body) error { + data, err := rlp.EncodeToBytes(body) if err != nil { - glog.Fatal("db write fail:", err) return err } + 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 +} - if glog.V(logger.Debug) { - glog.Infof("wrote block #%v %s. Took %v\n", block.Number(), common.PP(block.Hash().Bytes()), time.Since(tstart)) +// 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(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 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.Hash(), &types.Body{block.Transactions(), block.Uncles()}); err != nil { + return err + } + // Store the header too, signaling full block ownership + if err := WriteHeader(db, block.Header()); err != nil { + return err + } 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(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(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] +// GetBlockByHashOld returns the old combined block corresponding to the hash +// or nil if not found. This method is only used by the upgrade mechanism to +// access the old combined block representation. It will be dropped after the +// network transitions to eth/63. +func GetBlockByHashOld(db common.Database, hash common.Hash) *types.Block { + data, _ := db.Get(append(blockHashPre, hash[:]...)) + if len(data) == 0 { + return nil + } + var block types.StorageBlock + if err := rlp.Decode(bytes.NewReader(data), &block); err != nil { + glog.V(logger.Error).Infof("invalid block RLP for hash %x: %v", hash, err) + return nil + } + return (*types.Block)(&block) +} |