diff options
| -rw-r--r-- | cmd/geth/main.go | 36 | ||||
| -rw-r--r-- | core/chain_manager.go | 86 | ||||
| -rw-r--r-- | core/chain_util.go | 98 |
3 files changed, 133 insertions, 87 deletions
diff --git a/cmd/geth/main.go b/cmd/geth/main.go index a7d3a73ef..645f51b9a 100644 --- a/cmd/geth/main.go +++ b/cmd/geth/main.go @@ -37,7 +37,10 @@ import ( "github.com/ethereum/go-ethereum/accounts" "github.com/ethereum/go-ethereum/cmd/utils" "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core" + "github.com/ethereum/go-ethereum/core/types" "github.com/ethereum/go-ethereum/eth" + "github.com/ethereum/go-ethereum/ethdb" "github.com/ethereum/go-ethereum/logger" "github.com/ethereum/go-ethereum/logger/glog" "github.com/ethereum/go-ethereum/metrics" @@ -72,10 +75,13 @@ func init() { { Action: blockRecovery, Name: "recover", - Usage: "attempts to recover a corrupted database by setting a new block head by number", + Usage: "attempts to recover a corrupted database by setting a new block by number or hash. See help recover.", Description: ` The recover commands will attempt to read out the last block based on that. + +recover #number recovers by number +recover <hex> recovers by hash `, }, blocktestCommand, @@ -450,17 +456,33 @@ func unlockAccount(ctx *cli.Context, am *accounts.Manager, account string) (pass } func blockRecovery(ctx *cli.Context) { - num := ctx.Args().First() - if len(ctx.Args()) < 1 { - glog.Fatal("recover requires block number") + arg := ctx.Args().First() + if len(ctx.Args()) < 1 && len(arg) > 0 { + glog.Fatal("recover requires block number or hash") } cfg := utils.MakeEthConfig(ClientIdentifier, nodeNameVersion, ctx) - ethereum, err := eth.New(cfg) + blockDb, err := ethdb.NewLDBDatabase(filepath.Join(cfg.DataDir, "blockchain")) if err != nil { - utils.Fatalf("%v", err) + glog.Fatalln("could not open db:", err) + } + + var block *types.Block + if arg[0] == '#' { + block = core.GetBlockByNumber(blockDb, common.String2Big(arg[1:]).Uint64()) + } else { + block = core.GetBlockByHash(blockDb, common.HexToHash(arg)) + } + + if block == nil { + glog.Fatalln("block not found. Recovery failed") + } + + err = core.WriteHead(blockDb, block) + if err != nil { + glog.Fatalln("block write err", err) } - ethereum.ChainManager().Recover(common.String2Big(num).Uint64()) + glog.Infof("Recovery succesful. New HEAD %x\n", block.Hash()) } func startEth(ctx *cli.Context, eth *eth.Ethereum) { diff --git a/core/chain_manager.go b/core/chain_manager.go index a7b57b26b..70a8b11c6 100644 --- a/core/chain_manager.go +++ b/core/chain_manager.go @@ -1,7 +1,6 @@ package core import ( - "bytes" "fmt" "io" "math/big" @@ -17,7 +16,6 @@ import ( "github.com/ethereum/go-ethereum/logger" "github.com/ethereum/go-ethereum/logger/glog" "github.com/ethereum/go-ethereum/metrics" - "github.com/ethereum/go-ethereum/params" "github.com/ethereum/go-ethereum/pow" "github.com/ethereum/go-ethereum/rlp" "github.com/hashicorp/golang-lru" @@ -40,53 +38,6 @@ const ( checkpointLimit = 200 ) -// CalcDifficulty is the difficulty adjustment algorithm. It returns -// the difficulty that a new block b should have when created at time -// given the parent block's time and difficulty. -func CalcDifficulty(time int64, parentTime int64, parentDiff *big.Int) *big.Int { - diff := new(big.Int) - adjust := new(big.Int).Div(parentDiff, params.DifficultyBoundDivisor) - if big.NewInt(time-parentTime).Cmp(params.DurationLimit) < 0 { - diff.Add(parentDiff, adjust) - } else { - diff.Sub(parentDiff, adjust) - } - if diff.Cmp(params.MinimumDifficulty) < 0 { - return params.MinimumDifficulty - } - 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. -func CalcGasLimit(parent *types.Block) *big.Int { - decay := new(big.Int).Div(parent.GasLimit(), params.GasLimitBoundDivisor) - contrib := new(big.Int).Mul(parent.GasUsed(), big.NewInt(3)) - contrib = contrib.Div(contrib, big.NewInt(2)) - contrib = contrib.Div(contrib, params.GasLimitBoundDivisor) - - gl := new(big.Int).Sub(parent.GasLimit(), decay) - gl = gl.Add(gl, contrib) - gl = gl.Add(gl, big.NewInt(1)) - gl.Set(common.BigMax(gl, params.MinGasLimit)) - - if gl.Cmp(params.GenesisGasLimit) < 0 { - gl.Add(parent.GasLimit(), decay) - gl.Set(common.BigMin(gl, params.GenesisGasLimit)) - } - return gl -} - type ChainManager struct { //eth EthManager blockDb common.Database @@ -238,16 +189,6 @@ func (self *ChainManager) setTransState(statedb *state.StateDB) { self.transState = statedb } -func (bc *ChainManager) Recover(num uint64) { - block := bc.GetBlockByNumber(num) - if block != nil { - bc.insert(block) - glog.Infof("Recovery succesful. New HEAD %x\n", block.Hash()) - } else { - glog.Fatalln("Recovery failed") - } -} - func (bc *ChainManager) recover() bool { data, _ := bc.blockDb.Get([]byte("checkpoint")) if len(data) != 0 { @@ -378,12 +319,7 @@ func (self *ChainManager) ExportN(w io.Writer, first uint64, last uint64) error // insert injects a block into the current chain block chain. Note, this function // assumes that the `mu` mutex is held! func (bc *ChainManager) insert(block *types.Block) { - key := append(blockNumPre, block.Number().Bytes()...) - err := bc.blockDb.Put(key, block.Hash().Bytes()) - if err != nil { - glog.Fatal("db write fail:", err) - } - err = bc.blockDb.Put([]byte("LastBlock"), block.Hash().Bytes()) + err := WriteHead(bc.blockDb, block) if err != nil { glog.Fatal("db write fail:", err) } @@ -458,20 +394,15 @@ func (self *ChainManager) GetBlock(hash common.Hash) *types.Block { return block.(*types.Block) } - data, _ := self.blockDb.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) + block := GetBlockByHash(self.blockDb, hash) + if block == nil { return nil } // Add the block to the cache - self.cache.Add(hash, (*types.Block)(&block)) + self.cache.Add(hash, (*types.Block)(block)) - return (*types.Block)(&block) + return (*types.Block)(block) } func (self *ChainManager) GetBlockByNumber(num uint64) *types.Block { @@ -497,12 +428,7 @@ func (self *ChainManager) GetBlocksFromHash(hash common.Hash, n int) (blocks []* // non blocking version func (self *ChainManager) getBlockByNumber(num uint64) *types.Block { - key, _ := self.blockDb.Get(append(blockNumPre, big.NewInt(int64(num)).Bytes()...)) - if len(key) == 0 { - return nil - } - - return self.GetBlock(common.BytesToHash(key)) + return GetBlockByNumber(self.blockDb, num) } func (self *ChainManager) GetUnclesInChain(block *types.Block, length int) (uncles []*types.Header) { diff --git a/core/chain_util.go b/core/chain_util.go new file mode 100644 index 000000000..8051cc47a --- /dev/null +++ b/core/chain_util.go @@ -0,0 +1,98 @@ +package core + +import ( + "bytes" + "math/big" + + "github.com/ethereum/go-ethereum/common" + "github.com/ethereum/go-ethereum/core/types" + "github.com/ethereum/go-ethereum/logger" + "github.com/ethereum/go-ethereum/logger/glog" + "github.com/ethereum/go-ethereum/params" + "github.com/ethereum/go-ethereum/rlp" +) + +// CalcDifficulty is the difficulty adjustment algorithm. It returns +// the difficulty that a new block b should have when created at time +// given the parent block's time and difficulty. +func CalcDifficulty(time int64, parentTime int64, parentDiff *big.Int) *big.Int { + diff := new(big.Int) + adjust := new(big.Int).Div(parentDiff, params.DifficultyBoundDivisor) + if big.NewInt(time-parentTime).Cmp(params.DurationLimit) < 0 { + diff.Add(parentDiff, adjust) + } else { + diff.Sub(parentDiff, adjust) + } + if diff.Cmp(params.MinimumDifficulty) < 0 { + return params.MinimumDifficulty + } + 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. +func CalcGasLimit(parent *types.Block) *big.Int { + decay := new(big.Int).Div(parent.GasLimit(), params.GasLimitBoundDivisor) + contrib := new(big.Int).Mul(parent.GasUsed(), big.NewInt(3)) + contrib = contrib.Div(contrib, big.NewInt(2)) + contrib = contrib.Div(contrib, params.GasLimitBoundDivisor) + + gl := new(big.Int).Sub(parent.GasLimit(), decay) + gl = gl.Add(gl, contrib) + gl = gl.Add(gl, big.NewInt(1)) + gl.Set(common.BigMax(gl, params.MinGasLimit)) + + if gl.Cmp(params.GenesisGasLimit) < 0 { + gl.Add(parent.GasLimit(), decay) + gl.Set(common.BigMin(gl, params.GenesisGasLimit)) + } + 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[:]...)) + 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) +} + +// 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 { + return nil + } + + return GetBlockByHash(db, common.BytesToHash(key)) +} + +// WriteHead force writes the current head +func WriteHead(db common.Database, block *types.Block) error { + key := append(blockNumPre, block.Number().Bytes()...) + err := db.Put(key, block.Hash().Bytes()) + if err != nil { + return err + } + err = db.Put([]byte("LastBlock"), block.Hash().Bytes()) + if err != nil { + return err + } + return nil +} |