Exemple #1
0
func main() {
	logger.AddLogSystem(logger.NewStdLogSystem(os.Stdout, log.LstdFlags, logger.InfoLevel))

	// Generate the peer identity
	key, err := crypto.GenerateKey()
	if err != nil {
		fmt.Printf("Failed to generate peer key: %v.\n", err)
		os.Exit(-1)
	}
	name := common.MakeName("whisper-go", "1.0")
	shh := whisper.New()

	// Create an Shift peer to communicate through
	server := p2p.Server{
		PrivateKey: key,
		MaxPeers:   10,
		Name:       name,
		Protocols:  []p2p.Protocol{shh.Protocol()},
		ListenAddr: ":30300",
		NAT:        nat.Any(),
	}
	fmt.Println("Starting Shift peer...")
	if err := server.Start(); err != nil {
		fmt.Printf("Failed to start Shift peer: %v.\n", err)
		os.Exit(1)
	}

	// Send a message to self to check that something works
	payload := fmt.Sprintf("Hello world, this is %v. In case you're wondering, the time is %v", name, time.Now())
	if err := selfSend(shh, []byte(payload)); err != nil {
		fmt.Printf("Failed to self message: %v.\n", err)
		os.Exit(-1)
	}
}
Exemple #2
0
func New(config *Config) (*Ethereum, error) {
	// Bootstrap database
	logger.New(config.DataDir, config.LogFile, config.Verbosity)
	if len(config.LogJSON) > 0 {
		logger.NewJSONsystem(config.DataDir, config.LogJSON)
	}

	// Let the database take 3/4 of the max open files (TODO figure out a way to get the actual limit of the open files)
	const dbCount = 3
	ethdb.OpenFileLimit = 128 / (dbCount + 1)

	newdb := config.NewDB
	if newdb == nil {
		newdb = func(path string) (common.Database, error) { return ethdb.NewLDBDatabase(path, config.DatabaseCache) }
	}

	// attempt to merge database together, upgrading from an old version
	if err := mergeDatabases(config.DataDir, newdb); err != nil {
		return nil, err
	}

	chainDb, err := newdb(filepath.Join(config.DataDir, "chaindata"))
	if err != nil {
		return nil, fmt.Errorf("blockchain db err: %v", err)
	}
	if db, ok := chainDb.(*ethdb.LDBDatabase); ok {
		db.Meter("eth/db/chaindata/")
	}
	dappDb, err := newdb(filepath.Join(config.DataDir, "dapp"))
	if err != nil {
		return nil, fmt.Errorf("dapp db err: %v", err)
	}
	if db, ok := dappDb.(*ethdb.LDBDatabase); ok {
		db.Meter("eth/db/dapp/")
	}

	nodeDb := filepath.Join(config.DataDir, "nodes")
	glog.V(logger.Info).Infof("Protocol Versions: %v, Network Id: %v", ProtocolVersions, config.NetworkId)

	if len(config.GenesisFile) > 0 {
		fr, err := os.Open(config.GenesisFile)
		if err != nil {
			return nil, err
		}

		block, err := core.WriteGenesisBlock(chainDb, fr)
		if err != nil {
			return nil, err
		}
		glog.V(logger.Info).Infof("Successfully wrote genesis block. New genesis hash = %x\n", block.Hash())
	}

	if config.Olympic {
		_, err := core.WriteTestNetGenesisBlock(chainDb, 42)
		if err != nil {
			return nil, err
		}
		glog.V(logger.Error).Infoln("Starting Olympic network")
	}

	// This is for testing only.
	if config.GenesisBlock != nil {
		core.WriteBlock(chainDb, config.GenesisBlock)
		core.WriteHead(chainDb, config.GenesisBlock)
	}

	if !config.SkipBcVersionCheck {
		b, _ := chainDb.Get([]byte("BlockchainVersion"))
		bcVersion := int(common.NewValue(b).Uint())
		if bcVersion != config.BlockChainVersion && bcVersion != 0 {
			return nil, fmt.Errorf("Blockchain DB version mismatch (%d / %d). Run shift upgradedb.\n", bcVersion, config.BlockChainVersion)
		}
		saveBlockchainVersion(chainDb, config.BlockChainVersion)
	}
	glog.V(logger.Info).Infof("Blockchain DB Version: %d", config.BlockChainVersion)

	eth := &Ethereum{
		shutdownChan:            make(chan bool),
		databasesClosed:         make(chan bool),
		chainDb:                 chainDb,
		dappDb:                  dappDb,
		eventMux:                &event.TypeMux{},
		accountManager:          config.AccountManager,
		DataDir:                 config.DataDir,
		etherbase:               config.Etherbase,
		clientVersion:           config.Name, // TODO should separate from Name
		netVersionId:            config.NetworkId,
		NatSpec:                 config.NatSpec,
		MinerThreads:            config.MinerThreads,
		SolcPath:                config.SolcPath,
		AutoDAG:                 config.AutoDAG,
		PowTest:                 config.PowTest,
		GpoMinGasPrice:          config.GpoMinGasPrice,
		GpoMaxGasPrice:          config.GpoMaxGasPrice,
		GpoFullBlockRatio:       config.GpoFullBlockRatio,
		GpobaseStepDown:         config.GpobaseStepDown,
		GpobaseStepUp:           config.GpobaseStepUp,
		GpobaseCorrectionFactor: config.GpobaseCorrectionFactor,
	}

	eth.sqlDB, err = sqldb.NewSQLiteDatabase(filepath.Join(config.DataDir, "sql.db"))
	if err != nil {
		return nil, err
	}

	if config.PowTest {
		glog.V(logger.Info).Infof("ethash used in test mode")
		eth.pow, err = ethash.NewForTesting()
		if err != nil {
			return nil, err
		}
	} else {
		eth.pow = ethash.New()
	}
	//genesis := core.GenesisBlock(uint64(config.GenesisNonce), stateDb)
	eth.chainManager, err = core.NewChainManager(chainDb, eth.sqlDB, eth.pow, eth.EventMux())
	if err != nil {
		if err == core.ErrNoGenesis {
			return nil, fmt.Errorf(`Genesis block not found. Please supply a genesis block with the "--genesis /path/to/file" argument`)
		}

		return nil, err
	}
	eth.txPool = core.NewTxPool(eth.EventMux(), eth.chainManager.State, eth.chainManager.GasLimit)

	eth.blockProcessor = core.NewBlockProcessor(chainDb, eth.pow, eth.chainManager, eth.EventMux())
	eth.chainManager.SetProcessor(eth.blockProcessor)
	eth.protocolManager = NewProtocolManager(config.NetworkId, eth.eventMux, eth.txPool, eth.pow, eth.chainManager)

	eth.miner = miner.New(eth, eth.EventMux(), eth.pow)
	eth.miner.SetGasPrice(config.GasPrice)
	eth.miner.SetExtra(config.ExtraData)

	if config.Shh {
		eth.whisper = whisper.New()
		eth.shhVersionId = int(eth.whisper.Version())
	}

	netprv, err := config.nodeKey()
	if err != nil {
		return nil, err
	}
	protocols := append([]p2p.Protocol{}, eth.protocolManager.SubProtocols...)
	if config.Shh {
		protocols = append(protocols, eth.whisper.Protocol())
	}
	eth.net = &p2p.Server{
		PrivateKey:      netprv,
		Name:            config.Name,
		MaxPeers:        config.MaxPeers,
		MaxPendingPeers: config.MaxPendingPeers,
		Discovery:       config.Discovery,
		Protocols:       protocols,
		NAT:             config.NAT,
		NoDial:          !config.Dial,
		BootstrapNodes:  config.parseBootNodes(),
		StaticNodes:     config.parseNodes(staticNodes),
		TrustedNodes:    config.parseNodes(trustedNodes),
		NodeDatabase:    nodeDb,
	}
	if len(config.Port) > 0 {
		eth.net.ListenAddr = ":" + config.Port
	}

	vm.Debug = config.VmDebug

	eth.sqlDB.Refresh(eth.chainManager)

	return eth, nil
}