func (h *Header) UnmarshalJSON(data []byte) error { var ext struct { ParentHash string Coinbase string Difficulty string GasLimit string Time *big.Int Extra string } dec := json.NewDecoder(bytes.NewReader(data)) if err := dec.Decode(&ext); err != nil { return err } h.ParentHash = common.HexToHash(ext.ParentHash) h.Coinbase = common.HexToAddress(ext.Coinbase) h.Difficulty = common.String2Big(ext.Difficulty) h.Time = ext.Time h.Extra = []byte(ext.Extra) return nil }
vectors []Vector by func(v Vector) *big.Int } type VectorSum func(v Vector) *big.Int func (v VectorSum) Sum(vectors []Vector) *big.Int { vs := vectorSummer{ vectors: vectors, by: v, } return Sum(vs) } func (v vectorSummer) Len() int { return len(v.vectors) } func (v vectorSummer) Sum(i int) *big.Int { return v.by(v.vectors[i]) } func GasSum(v Vector) *big.Int { return v.Gas } var etherInWei = new(big.Rat).SetInt(common.String2Big("1000000000000000000")) func GasPrice(bp, gl, ep *big.Int) *big.Int { BP := new(big.Rat).SetInt(bp) GL := new(big.Rat).SetInt(gl) EP := new(big.Rat).SetInt(ep) GP := new(big.Rat).Quo(BP, GL) GP = GP.Quo(GP, EP) return GP.Mul(GP, etherInWei).Num() }
// MakeSystemNode sets up a local node, configures the services to launch and // assembles the P2P protocol stack. func MakeSystemNode(name, version string, extra []byte, ctx *cli.Context) *node.Node { // Avoid conflicting network flags networks, netFlags := 0, []cli.BoolFlag{DevModeFlag, TestNetFlag, OlympicFlag} for _, flag := range netFlags { if ctx.GlobalBool(flag.Name) { networks++ } } if networks > 1 { Fatalf("The %v flags are mutually exclusive", netFlags) } // Configure the node's service container stackConf := &node.Config{ DataDir: MustMakeDataDir(ctx), PrivateKey: MakeNodeKey(ctx), Name: MakeNodeName(name, version, ctx), NoDiscovery: ctx.GlobalBool(NoDiscoverFlag.Name), BootstrapNodes: MakeBootstrapNodes(ctx), ListenAddr: MakeListenAddress(ctx), NAT: MakeNAT(ctx), MaxPeers: ctx.GlobalInt(MaxPeersFlag.Name), MaxPendingPeers: ctx.GlobalInt(MaxPendingPeersFlag.Name), } // Configure the Ethereum service accman := MakeAccountManager(ctx) ethConf := ð.Config{ Genesis: MakeGenesisBlock(ctx), FastSync: ctx.GlobalBool(FastSyncFlag.Name), BlockChainVersion: ctx.GlobalInt(BlockchainVersionFlag.Name), DatabaseCache: ctx.GlobalInt(CacheFlag.Name), NetworkId: ctx.GlobalInt(NetworkIdFlag.Name), AccountManager: accman, Etherbase: MakeEtherbase(accman, ctx), MinerThreads: ctx.GlobalInt(MinerThreadsFlag.Name), ExtraData: MakeMinerExtra(extra, ctx), NatSpec: ctx.GlobalBool(NatspecEnabledFlag.Name), DocRoot: ctx.GlobalString(DocRootFlag.Name), GasPrice: common.String2Big(ctx.GlobalString(GasPriceFlag.Name)), GpoMinGasPrice: common.String2Big(ctx.GlobalString(GpoMinGasPriceFlag.Name)), GpoMaxGasPrice: common.String2Big(ctx.GlobalString(GpoMaxGasPriceFlag.Name)), GpoFullBlockRatio: ctx.GlobalInt(GpoFullBlockRatioFlag.Name), GpobaseStepDown: ctx.GlobalInt(GpobaseStepDownFlag.Name), GpobaseStepUp: ctx.GlobalInt(GpobaseStepUpFlag.Name), GpobaseCorrectionFactor: ctx.GlobalInt(GpobaseCorrectionFactorFlag.Name), SolcPath: ctx.GlobalString(SolcPathFlag.Name), AutoDAG: ctx.GlobalBool(AutoDAGFlag.Name) || ctx.GlobalBool(MiningEnabledFlag.Name), } // Configure the Whisper service shhEnable := ctx.GlobalBool(WhisperEnabledFlag.Name) // Override any default configs in dev mode or the test net switch { case ctx.GlobalBool(OlympicFlag.Name): if !ctx.GlobalIsSet(NetworkIdFlag.Name) { ethConf.NetworkId = 1 } if !ctx.GlobalIsSet(GenesisFileFlag.Name) { ethConf.Genesis = core.OlympicGenesisBlock() } case ctx.GlobalBool(TestNetFlag.Name): if !ctx.GlobalIsSet(NetworkIdFlag.Name) { ethConf.NetworkId = 2 } if !ctx.GlobalIsSet(GenesisFileFlag.Name) { ethConf.Genesis = core.TestNetGenesisBlock() } state.StartingNonce = 1048576 // (2**20) case ctx.GlobalBool(DevModeFlag.Name): // Override the base network stack configs if !ctx.GlobalIsSet(DataDirFlag.Name) { stackConf.DataDir = filepath.Join(os.TempDir(), "/ethereum_dev_mode") } if !ctx.GlobalIsSet(MaxPeersFlag.Name) { stackConf.MaxPeers = 0 } if !ctx.GlobalIsSet(ListenPortFlag.Name) { stackConf.ListenAddr = ":0" } // Override the Ethereum protocol configs if !ctx.GlobalIsSet(GenesisFileFlag.Name) { ethConf.Genesis = core.OlympicGenesisBlock() } if !ctx.GlobalIsSet(GasPriceFlag.Name) { ethConf.GasPrice = new(big.Int) } if !ctx.GlobalIsSet(WhisperEnabledFlag.Name) { shhEnable = true } if !ctx.GlobalIsSet(VMDebugFlag.Name) { vm.Debug = true } ethConf.PowTest = true } // Assemble and return the protocol stack stack, err := node.New(stackConf) if err != nil { Fatalf("Failed to create the protocol stack: %v", err) } if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) { return eth.New(ctx, ethConf) }); err != nil { Fatalf("Failed to register the Ethereum service: %v", err) } if shhEnable { if err := stack.Register(func(*node.ServiceContext) (node.Service, error) { return whisper.New(), nil }); err != nil { Fatalf("Failed to register the Whisper service: %v", err) } } return stack }
// WriteGenesisBlock writes the genesis block to the database as block number 0 func WriteGenesisBlock(chainDb ethdb.Database, reader io.Reader) (*types.Block, error) { contents, err := ioutil.ReadAll(reader) if err != nil { return nil, err } var genesis struct { Nonce string Timestamp string ParentHash string ExtraData string GasLimit string Difficulty string Mixhash string Coinbase string Alloc map[string]struct { Code string Storage map[string]string Balance string } } if err := json.Unmarshal(contents, &genesis); err != nil { return nil, err } // creating with empty hash always works statedb, _ := state.New(common.Hash{}, chainDb) for addr, account := range genesis.Alloc { address := common.HexToAddress(addr) statedb.AddBalance(address, common.String2Big(account.Balance)) statedb.SetCode(address, common.Hex2Bytes(account.Code)) for key, value := range account.Storage { statedb.SetState(address, common.HexToHash(key), common.HexToHash(value)) } } root, stateBatch := statedb.CommitBatch() difficulty := common.String2Big(genesis.Difficulty) block := types.NewBlock(&types.Header{ Nonce: types.EncodeNonce(common.String2Big(genesis.Nonce).Uint64()), Time: common.String2Big(genesis.Timestamp), ParentHash: common.HexToHash(genesis.ParentHash), Extra: common.FromHex(genesis.ExtraData), GasLimit: common.String2Big(genesis.GasLimit), Difficulty: difficulty, MixDigest: common.HexToHash(genesis.Mixhash), Coinbase: common.HexToAddress(genesis.Coinbase), Root: root, }, nil, nil, nil) if block := GetBlock(chainDb, block.Hash()); block != nil { glog.V(logger.Info).Infoln("Genesis block already in chain. Writing canonical number") err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()) if err != nil { return nil, err } return block, nil } if err := stateBatch.Write(); err != nil { return nil, fmt.Errorf("cannot write state: %v", err) } if err := WriteTd(chainDb, block.Hash(), difficulty); err != nil { return nil, err } if err := WriteBlock(chainDb, block); err != nil { return nil, err } if err := WriteBlockReceipts(chainDb, block.Hash(), nil); err != nil { return nil, err } if err := WriteCanonicalHash(chainDb, block.Hash(), block.NumberU64()); err != nil { return nil, err } if err := WriteHeadBlockHash(chainDb, block.Hash()); err != nil { return nil, err } return block, nil }