// MakeChain creates a chain manager from set command line flags.
func MakeChain(ctx *cli.Context) (chain *core.ChainManager, chainDb common.Database) {
datadir := ctx.GlobalString(DataDirFlag.Name)
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) {
InitOlympic()
_, err := core.WriteTestNetGenesisBlock(chainDb, 42)
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.NewChainManager(chainDb, pow, eventMux)
if err != nil {
Fatalf("Could not start chainmanager: %v", err)
}
proc := core.NewBlockProcessor(chainDb, pow, chain, eventMux)
chain.SetProcessor(proc)
return chain, chainDb
}
func New(config *Config) (*Expanse, 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 gexp upgradedb.\n", bcVersion, config.BlockChainVersion)
}
saveBlockchainVersion(chainDb, config.BlockChainVersion)
}
glog.V(logger.Info).Infof("Blockchain DB Version: %d", config.BlockChainVersion)
exp := &Expanse{
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,
}
if config.PowTest {
glog.V(logger.Info).Infof("ethash used in test mode")
exp.pow, err = ethash.NewForTesting()
if err != nil {
return nil, err
}
} else {
exp.pow = ethash.New()
}
//genesis := core.GenesisBlock(uint64(config.GenesisNonce), stateDb)
exp.chainManager, err = core.NewChainManager(chainDb, exp.pow, exp.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
}
exp.txPool = core.NewTxPool(exp.EventMux(), exp.chainManager.State, exp.chainManager.GasLimit)
exp.blockProcessor = core.NewBlockProcessor(chainDb, exp.pow, exp.chainManager, exp.EventMux())
exp.chainManager.SetProcessor(exp.blockProcessor)
exp.protocolManager = NewProtocolManager(config.NetworkId, exp.eventMux, exp.txPool, exp.pow, exp.chainManager)
exp.miner = miner.New(exp, exp.EventMux(), exp.pow)
exp.miner.SetGasPrice(config.GasPrice)
exp.miner.SetExtra(config.ExtraData)
if config.Shh {
exp.whisper = whisper.New()
exp.shhVersionId = int(exp.whisper.Version())
}
netprv, err := config.nodeKey()
if err != nil {
return nil, err
}
protocols := append([]p2p.Protocol{}, exp.protocolManager.SubProtocols...)
if config.Shh {
protocols = append(protocols, exp.whisper.Protocol())
}
exp.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 {
exp.net.ListenAddr = ":" + config.Port
}
vm.Debug = config.VmDebug
return exp, nil
}