Exemplo n.º 1
0
// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context) (chain *core.BlockChain, chainDb ethdb.Database) {
	datadir := MustMakeDataDir(ctx)
	cache := ctx.GlobalInt(CacheFlag.Name)

	var err error
	if chainDb, err = ethdb.NewLDBDatabase(filepath.Join(datadir, "chaindata"), cache); err != nil {
		Fatalf("Could not open database: %v", err)
	}
	if ctx.GlobalBool(OlympicFlag.Name) {
		_, err := core.WriteTestNetGenesisBlock(chainDb)
		if err != nil {
			glog.Fatalln(err)
		}
	}

	eventMux := new(event.TypeMux)
	pow := ethash.New()
	//genesis := core.GenesisBlock(uint64(ctx.GlobalInt(GenesisNonceFlag.Name)), blockDB)
	chain, err = core.NewBlockChain(chainDb, pow, eventMux)
	if err != nil {
		Fatalf("Could not start chainmanager: %v", err)
	}

	return chain, chainDb
}
Exemplo n.º 2
0
func New(ctx *node.ServiceContext, config *Config) (*Ethereum, error) {
	// 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)

	// Open the chain database and perform any upgrades needed
	chainDb, err := ctx.OpenDatabase("chaindata", config.DatabaseCache)
	if err != nil {
		return nil, err
	}
	if db, ok := chainDb.(*ethdb.LDBDatabase); ok {
		db.Meter("eth/db/chaindata/")
	}
	if err := upgradeChainDatabase(chainDb); err != nil {
		return nil, err
	}
	if err := addMipmapBloomBins(chainDb); err != nil {
		return nil, err
	}

	dappDb, err := ctx.OpenDatabase("dapp", config.DatabaseCache)
	if err != nil {
		return nil, err
	}
	if db, ok := dappDb.(*ethdb.LDBDatabase); ok {
		db.Meter("eth/db/dapp/")
	}
	glog.V(logger.Info).Infof("Protocol Versions: %v, Network Id: %v", ProtocolVersions, config.NetworkId)

	// Load up any custom genesis block if requested
	if len(config.Genesis) > 0 {
		block, err := core.WriteGenesisBlock(chainDb, strings.NewReader(config.Genesis))
		if err != nil {
			return nil, err
		}
		glog.V(logger.Info).Infof("Successfully wrote custom genesis block: %x", block.Hash())
	}
	// Load up a test setup if directly injected
	if config.TestGenesisState != nil {
		chainDb = config.TestGenesisState
	}
	if config.TestGenesisBlock != nil {
		core.WriteTd(chainDb, config.TestGenesisBlock.Hash(), config.TestGenesisBlock.Difficulty())
		core.WriteBlock(chainDb, config.TestGenesisBlock)
		core.WriteCanonicalHash(chainDb, config.TestGenesisBlock.Hash(), config.TestGenesisBlock.NumberU64())
		core.WriteHeadBlockHash(chainDb, config.TestGenesisBlock.Hash())
	}

	if !config.SkipBcVersionCheck {
		bcVersion := core.GetBlockChainVersion(chainDb)
		if bcVersion != config.BlockChainVersion && bcVersion != 0 {
			return nil, fmt.Errorf("Blockchain DB version mismatch (%d / %d). Run geth upgradedb.\n", bcVersion, config.BlockChainVersion)
		}
		core.WriteBlockChainVersion(chainDb, config.BlockChainVersion)
	}
	glog.V(logger.Info).Infof("Blockchain DB Version: %d", config.BlockChainVersion)

	eth := &Ethereum{
		shutdownChan:            make(chan bool),
		chainDb:                 chainDb,
		dappDb:                  dappDb,
		eventMux:                ctx.EventMux,
		accountManager:          config.AccountManager,
		etherbase:               config.Etherbase,
		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,
		httpclient:              httpclient.New(config.DocRoot),
	}

	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.blockchain, err = core.NewBlockChain(chainDb, 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
	}
	newPool := core.NewTxPool(eth.EventMux(), eth.blockchain.State, eth.blockchain.GasLimit)
	eth.txPool = newPool

	if eth.protocolManager, err = NewProtocolManager(config.FastSync, config.NetworkId, eth.eventMux, eth.txPool, eth.pow, eth.blockchain, chainDb); err != nil {
		return nil, err
	}
	eth.miner = miner.New(eth, eth.EventMux(), eth.pow)
	eth.miner.SetGasPrice(config.GasPrice)
	eth.miner.SetExtra(config.ExtraData)

	return eth, nil
}