310 lines
7.0 KiB
Go
310 lines
7.0 KiB
Go
package eth
|
|
|
|
import (
|
|
"fmt"
|
|
"net"
|
|
"sync"
|
|
|
|
"github.com/ethereum/go-ethereum/core"
|
|
"github.com/ethereum/go-ethereum/crypto"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/ethutil"
|
|
"github.com/ethereum/go-ethereum/event"
|
|
ethlogger "github.com/ethereum/go-ethereum/logger"
|
|
"github.com/ethereum/go-ethereum/p2p"
|
|
"github.com/ethereum/go-ethereum/pow/ezp"
|
|
"github.com/ethereum/go-ethereum/rpc"
|
|
"github.com/ethereum/go-ethereum/whisper"
|
|
)
|
|
|
|
const (
|
|
seedNodeAddress = "poc-7.ethdev.com:30300"
|
|
)
|
|
|
|
type Config struct {
|
|
Name string
|
|
Version string
|
|
Identifier string
|
|
KeyStore string
|
|
DataDir string
|
|
LogFile string
|
|
LogLevel int
|
|
KeyRing string
|
|
|
|
MaxPeers int
|
|
Port string
|
|
NATType string
|
|
PMPGateway string
|
|
|
|
KeyManager *crypto.KeyManager
|
|
}
|
|
|
|
var logger = ethlogger.NewLogger("SERV")
|
|
|
|
type Ethereum struct {
|
|
// Channel for shutting down the ethereum
|
|
shutdownChan chan bool
|
|
quit chan bool
|
|
|
|
// DB interface
|
|
db ethutil.Database
|
|
blacklist p2p.Blacklist
|
|
|
|
//*** SERVICES ***
|
|
// State manager for processing new blocks and managing the over all states
|
|
blockProcessor *core.BlockProcessor
|
|
txPool *core.TxPool
|
|
chainManager *core.ChainManager
|
|
blockPool *BlockPool
|
|
whisper *whisper.Whisper
|
|
|
|
net *p2p.Server
|
|
eventMux *event.TypeMux
|
|
txSub event.Subscription
|
|
blockSub event.Subscription
|
|
|
|
RpcServer *rpc.JsonRpcServer
|
|
keyManager *crypto.KeyManager
|
|
|
|
clientIdentity p2p.ClientIdentity
|
|
logger ethlogger.LogSystem
|
|
|
|
synclock sync.Mutex
|
|
syncGroup sync.WaitGroup
|
|
|
|
Mining bool
|
|
}
|
|
|
|
func New(config *Config) (*Ethereum, error) {
|
|
// Boostrap database
|
|
logger := ethlogger.New(config.DataDir, config.LogFile, config.LogLevel)
|
|
db, err := ethdb.NewLDBDatabase("database")
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// Perform database sanity checks
|
|
d, _ := db.Get([]byte("ProtocolVersion"))
|
|
protov := ethutil.NewValue(d).Uint()
|
|
if protov != ProtocolVersion && protov != 0 {
|
|
return nil, fmt.Errorf("Database version mismatch. Protocol(%d / %d). `rm -rf %s`", protov, ProtocolVersion, ethutil.Config.ExecPath+"/database")
|
|
}
|
|
|
|
// Create new keymanager
|
|
var keyManager *crypto.KeyManager
|
|
switch config.KeyStore {
|
|
case "db":
|
|
keyManager = crypto.NewDBKeyManager(db)
|
|
case "file":
|
|
keyManager = crypto.NewFileKeyManager(config.DataDir)
|
|
default:
|
|
return nil, fmt.Errorf("unknown keystore type: %s", config.KeyStore)
|
|
}
|
|
// Initialise the keyring
|
|
keyManager.Init(config.KeyRing, 0, false)
|
|
|
|
// Create a new client id for this instance. This will help identifying the node on the network
|
|
clientId := p2p.NewSimpleClientIdentity(config.Name, config.Version, config.Identifier, keyManager.PublicKey())
|
|
|
|
saveProtocolVersion(db)
|
|
ethutil.Config.Db = db
|
|
|
|
eth := &Ethereum{
|
|
shutdownChan: make(chan bool),
|
|
quit: make(chan bool),
|
|
db: db,
|
|
keyManager: keyManager,
|
|
clientIdentity: clientId,
|
|
blacklist: p2p.NewBlacklist(),
|
|
eventMux: &event.TypeMux{},
|
|
logger: logger,
|
|
}
|
|
|
|
eth.chainManager = core.NewChainManager(eth.EventMux())
|
|
eth.txPool = core.NewTxPool(eth.EventMux())
|
|
eth.blockProcessor = core.NewBlockProcessor(eth.txPool, eth.chainManager, eth.EventMux())
|
|
eth.chainManager.SetProcessor(eth.blockProcessor)
|
|
eth.whisper = whisper.New()
|
|
|
|
hasBlock := eth.chainManager.HasBlock
|
|
insertChain := eth.chainManager.InsertChain
|
|
eth.blockPool = NewBlockPool(hasBlock, insertChain, ezp.Verify)
|
|
|
|
// Start services
|
|
eth.txPool.Start()
|
|
|
|
ethProto := EthProtocol(eth.txPool, eth.chainManager, eth.blockPool)
|
|
protocols := []p2p.Protocol{ethProto, eth.whisper.Protocol()}
|
|
|
|
nat, err := p2p.ParseNAT(config.NATType, config.PMPGateway)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
eth.net = &p2p.Server{
|
|
Identity: clientId,
|
|
MaxPeers: config.MaxPeers,
|
|
Protocols: protocols,
|
|
ListenAddr: ":" + config.Port,
|
|
Blacklist: eth.blacklist,
|
|
NAT: nat,
|
|
}
|
|
|
|
return eth, nil
|
|
}
|
|
|
|
func (s *Ethereum) KeyManager() *crypto.KeyManager {
|
|
return s.keyManager
|
|
}
|
|
|
|
func (s *Ethereum) Logger() ethlogger.LogSystem {
|
|
return s.logger
|
|
}
|
|
|
|
func (s *Ethereum) ClientIdentity() p2p.ClientIdentity {
|
|
return s.clientIdentity
|
|
}
|
|
|
|
func (s *Ethereum) ChainManager() *core.ChainManager {
|
|
return s.chainManager
|
|
}
|
|
|
|
func (s *Ethereum) BlockProcessor() *core.BlockProcessor {
|
|
return s.blockProcessor
|
|
}
|
|
|
|
func (s *Ethereum) TxPool() *core.TxPool {
|
|
return s.txPool
|
|
}
|
|
|
|
func (s *Ethereum) BlockPool() *BlockPool {
|
|
return s.blockPool
|
|
}
|
|
|
|
func (s *Ethereum) Whisper() *whisper.Whisper {
|
|
return s.whisper
|
|
}
|
|
|
|
func (s *Ethereum) EventMux() *event.TypeMux {
|
|
return s.eventMux
|
|
}
|
|
func (self *Ethereum) Db() ethutil.Database {
|
|
return self.db
|
|
}
|
|
|
|
func (s *Ethereum) IsMining() bool {
|
|
return s.Mining
|
|
}
|
|
|
|
func (s *Ethereum) IsListening() bool {
|
|
// XXX TODO
|
|
return false
|
|
}
|
|
|
|
func (s *Ethereum) PeerCount() int {
|
|
return s.net.PeerCount()
|
|
}
|
|
|
|
func (s *Ethereum) Peers() []*p2p.Peer {
|
|
return s.net.Peers()
|
|
}
|
|
|
|
func (s *Ethereum) MaxPeers() int {
|
|
return s.net.MaxPeers
|
|
}
|
|
|
|
// Start the ethereum
|
|
func (s *Ethereum) Start(seed bool) error {
|
|
err := s.net.Start()
|
|
if err != nil {
|
|
return err
|
|
}
|
|
s.blockPool.Start()
|
|
s.whisper.Start()
|
|
|
|
// broadcast transactions
|
|
s.txSub = s.eventMux.Subscribe(core.TxPreEvent{})
|
|
go s.txBroadcastLoop()
|
|
|
|
// broadcast mined blocks
|
|
s.blockSub = s.eventMux.Subscribe(core.NewMinedBlockEvent{})
|
|
go s.blockBroadcastLoop()
|
|
|
|
// TODO: read peers here
|
|
if seed {
|
|
logger.Infof("Connect to seed node %v", seedNodeAddress)
|
|
if err := s.SuggestPeer(seedNodeAddress); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
logger.Infoln("Server started")
|
|
return nil
|
|
}
|
|
|
|
func (self *Ethereum) SuggestPeer(addr string) error {
|
|
netaddr, err := net.ResolveTCPAddr("tcp", addr)
|
|
if err != nil {
|
|
logger.Errorf("couldn't resolve %s:", addr, err)
|
|
return err
|
|
}
|
|
|
|
self.net.SuggestPeer(netaddr.IP, netaddr.Port, nil)
|
|
return nil
|
|
}
|
|
|
|
func (s *Ethereum) Stop() {
|
|
// Close the database
|
|
defer s.db.Close()
|
|
|
|
close(s.quit)
|
|
|
|
s.txSub.Unsubscribe() // quits txBroadcastLoop
|
|
s.blockSub.Unsubscribe() // quits blockBroadcastLoop
|
|
|
|
if s.RpcServer != nil {
|
|
s.RpcServer.Stop()
|
|
}
|
|
s.txPool.Stop()
|
|
s.eventMux.Stop()
|
|
s.blockPool.Stop()
|
|
s.whisper.Stop()
|
|
|
|
logger.Infoln("Server stopped")
|
|
close(s.shutdownChan)
|
|
}
|
|
|
|
// This function will wait for a shutdown and resumes main thread execution
|
|
func (s *Ethereum) WaitForShutdown() {
|
|
<-s.shutdownChan
|
|
}
|
|
|
|
// now tx broadcasting is taken out of txPool
|
|
// handled here via subscription, efficiency?
|
|
func (self *Ethereum) txBroadcastLoop() {
|
|
// automatically stops if unsubscribe
|
|
for obj := range self.txSub.Chan() {
|
|
event := obj.(core.TxPreEvent)
|
|
self.net.Broadcast("eth", TxMsg, []interface{}{event.Tx.RlpData()})
|
|
}
|
|
}
|
|
|
|
func (self *Ethereum) blockBroadcastLoop() {
|
|
// automatically stops if unsubscribe
|
|
for obj := range self.txSub.Chan() {
|
|
switch ev := obj.(type) {
|
|
case core.NewMinedBlockEvent:
|
|
self.net.Broadcast("eth", NewBlockMsg, ev.Block.RlpData())
|
|
}
|
|
}
|
|
}
|
|
|
|
func saveProtocolVersion(db ethutil.Database) {
|
|
d, _ := db.Get([]byte("ProtocolVersion"))
|
|
protocolVersion := ethutil.NewValue(d).Uint()
|
|
|
|
if protocolVersion == 0 {
|
|
db.Put([]byte("ProtocolVersion"), ethutil.NewValue(ProtocolVersion).Bytes())
|
|
}
|
|
}
|