Ejemplo n.º 1
0
// New creates a Ethereum client, pre-configured to one of the supported networks.
func New(datadir string, network EthereumNetwork) (*Geth, error) {
	// Tag the data dir with the network name
	switch network {
	case MainNet:
		datadir = filepath.Join(datadir, "mainnet")
	case TestNet:
		datadir = filepath.Join(datadir, "testnet")
	default:
		return nil, fmt.Errorf("unsupported network: %v", network)
	}
	// Select the bootstrap nodes based on the network
	bootnodes := utils.FrontierBootNodes
	if network == TestNet {
		bootnodes = utils.TestNetBootNodes
	}
	// Configure the node's service container
	stackConf := &node.Config{
		DataDir:        datadir,
		Name:           common.MakeName(NodeName, NodeVersion),
		BootstrapNodes: bootnodes,
		ListenAddr:     fmt.Sprintf(":%d", NodePort),
		MaxPeers:       NodeMaxPeers,
	}
	// Configure the bare-bone Ethereum service
	keystore := crypto.NewKeyStorePassphrase(filepath.Join(datadir, "keystore"), crypto.StandardScryptN, crypto.StandardScryptP)
	ethConf := &eth.Config{
		FastSync:       true,
		DatabaseCache:  64,
		NetworkId:      int(network),
		AccountManager: accounts.NewManager(keystore),

		// Blatantly initialize the gas oracle to the defaults from go-ethereum
		GpoMinGasPrice:          new(big.Int).Mul(big.NewInt(50), common.Shannon),
		GpoMaxGasPrice:          new(big.Int).Mul(big.NewInt(500), common.Shannon),
		GpoFullBlockRatio:       80,
		GpobaseStepDown:         10,
		GpobaseStepUp:           100,
		GpobaseCorrectionFactor: 110,
	}
	// Override any default configs in the test network
	if network == TestNet {
		ethConf.NetworkId = 2
		ethConf.Genesis = core.TestNetGenesisBlock()
		state.StartingNonce = 1048576 // (2**20)
	}
	// Assemble and return the protocol stack
	stack, err := node.New(stackConf)
	if err != nil {
		return nil, fmt.Errorf("protocol stack: %v", err)
	}
	if err := stack.Register(func(ctx *node.ServiceContext) (node.Service, error) { return eth.New(ctx, ethConf) }); err != nil {
		return nil, fmt.Errorf("ethereum service: %v", err)
	}
	return &Geth{
		stack:    stack,
		keystore: keystore,
	}, nil
}
Ejemplo n.º 2
0
// 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 := &eth.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
}