node/node.go

   1 package node
   2
   3 import (
   4         "encoding/hex"
   5         "errors"
   6         "net"
   7         "net/http"
   8         // debug tool
   9         _ "net/http/pprof"
  10         "path/filepath"
  11         "reflect"
  12
  13         "github.com/prometheus/prometheus/util/flock"
  14         log "github.com/sirupsen/logrus"
  15         cmn "github.com/tendermint/tmlibs/common"
  16         browser "github.com/toqueteos/webbrowser"
  17
  18         "github.com/bytom/vapor/accesstoken"
  19         "github.com/bytom/vapor/account"
  20         "github.com/bytom/vapor/api"
  21         "github.com/bytom/vapor/application/mov"
  22         "github.com/bytom/vapor/asset"
  23         "github.com/bytom/vapor/blockchain/pseudohsm"
  24         cfg "github.com/bytom/vapor/config"
  25         "github.com/bytom/vapor/consensus"
  26         "github.com/bytom/vapor/database"
  27         dbm "github.com/bytom/vapor/database/leveldb"
  28         "github.com/bytom/vapor/env"
  29         "github.com/bytom/vapor/event"
  30         vaporLog "github.com/bytom/vapor/log"
  31         "github.com/bytom/vapor/net/websocket"
  32         "github.com/bytom/vapor/netsync"
  33         "github.com/bytom/vapor/proposal/blockproposer"
  34         "github.com/bytom/vapor/protocol"
  35         "github.com/bytom/vapor/protocol/bc/types"
  36         w "github.com/bytom/vapor/wallet"
  37 )
  38
  39 const (
  40         webHost   = "http://127.0.0.1"
  41         logModule = "node"
  42 )
  43
  44 // Node represent bytom node
  45 type Node struct {
  46         cmn.BaseService
  47
  48         config          *cfg.Config
  49         eventDispatcher *event.Dispatcher
  50         syncManager     *netsync.SyncManager
  51
  52         wallet          *w.Wallet
  53         accessTokens    *accesstoken.CredentialStore
  54         notificationMgr *websocket.WSNotificationManager
  55         api             *api.API
  56         chain           *protocol.Chain
  57         cpuMiner        *blockproposer.BlockProposer
  58         miningEnable    bool
  59 }
  60
  61 // NewNode create bytom node
  62 func NewNode(config *cfg.Config) *Node {
  63         initNodeConfig(config)
  64
  65         if err := vaporLog.InitLogFile(config); err != nil {
  66                 log.WithField("err", err).Fatalln("InitLogFile failed")
  67         }
  68
  69         log.WithFields(log.Fields{
  70                 "module":             logModule,
  71                 "pubkey":             config.PrivateKey().XPub(),
  72                 "fed_xpubs":          config.Federation.Xpubs,
  73                 "fed_quorum":         config.Federation.Quorum,
  74                 "fed_controlprogram": hex.EncodeToString(cfg.FederationWScript(config)),
  75         }).Info()
  76
  77         // Get store
  78         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  79                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  80         }
  81         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  82         store := database.NewStore(coreDB)
  83
  84         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  85         accessTokens := accesstoken.NewStore(tokenDB)
  86
  87         dispatcher := event.NewDispatcher()
  88         movCore := mov.NewCore(config.DBBackend, config.DBDir(), consensus.ActiveNetParams.MovStartHeight)
  89         assetFilter := protocol.NewAssetFilter(config.CrossChain.AssetWhitelist)
  90         txPool := protocol.NewTxPool(store, []protocol.DustFilterer{movCore, assetFilter}, dispatcher)
  91         chain, err := protocol.NewChain(store, txPool, []protocol.SubProtocol{movCore}, dispatcher)
  92         if err != nil {
  93                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  94         }
  95
  96         if err := checkConfig(chain, config); err != nil {
  97                 panic(err)
  98         }
  99
 100         var accounts *account.Manager
 101         var assets *asset.Registry
 102         var wallet *w.Wallet
 103
 104         hsm, err := pseudohsm.New(config.KeysDir())
 105         if err != nil {
 106                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 107         }
 108
 109         if !config.Wallet.Disable {
 110                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 111                 walletStore := database.NewWalletStore(walletDB)
 112                 accountStore := database.NewAccountStore(walletDB)
 113                 accounts = account.NewManager(accountStore, chain)
 114                 assets = asset.NewRegistry(walletDB, chain)
 115                 wallet, err = w.NewWallet(walletStore, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 116                 if err != nil {
 117                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 118                 }
 119
 120                 if err = wallet.Run(); err != nil {
 121                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet work running thread")
 122                 }
 123
 124                 // trigger rescan wallet
 125                 if config.Wallet.Rescan {
 126                         wallet.RescanBlocks()
 127                 }
 128         }
 129         fastSyncDB := dbm.NewDB("fastsync", config.DBBackend, config.DBDir())
 130         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher, fastSyncDB)
 131         if err != nil {
 132                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 133         }
 134
 135         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 136
 137         // run the profile server
 138         profileHost := config.ProfListenAddress
 139         if profileHost != "" {
 140                 // Profiling vapord programs.see (https://blog.golang.org/profiling-go-programs)
 141                 // go tool pprof http://profileHose/debug/pprof/heap
 142                 go func() {
 143                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 144                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 145                         }
 146                 }()
 147         }
 148
 149         node := &Node{
 150                 eventDispatcher: dispatcher,
 151                 config:          config,
 152                 syncManager:     syncManager,
 153                 accessTokens:    accessTokens,
 154                 wallet:          wallet,
 155                 chain:           chain,
 156                 miningEnable:    config.Mining,
 157
 158                 notificationMgr: notificationMgr,
 159         }
 160
 161         node.cpuMiner = blockproposer.NewBlockProposer(chain, accounts, txPool, dispatcher)
 162         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 163         return node
 164 }
 165
 166 // Rollback rollback chain from one height to targetHeight
 167 func Rollback(config *cfg.Config, targetHeight uint64) error {
 168         if err := initNodeConfig(config); err != nil {
 169                 return err
 170         }
 171
 172         // Get store
 173         if config.DBBackend != "leveldb" {
 174                 return errors.New("Param db_backend is invalid, use leveldb")
 175         }
 176
 177         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
 178         store := database.NewStore(coreDB)
 179
 180         dispatcher := event.NewDispatcher()
 181         movCore := mov.NewCore(config.DBBackend, config.DBDir(), consensus.ActiveNetParams.MovStartHeight)
 182         txPool := protocol.NewTxPool(store, []protocol.DustFilterer{movCore}, dispatcher)
 183         chain, err := protocol.NewChain(store, txPool, []protocol.SubProtocol{movCore}, dispatcher)
 184         if err != nil {
 185                 return err
 186         }
 187
 188         hsm, err := pseudohsm.New(config.KeysDir())
 189         if err != nil {
 190                 return err
 191         }
 192
 193         walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 194         walletStore := database.NewWalletStore(walletDB)
 195         accountStore := database.NewAccountStore(walletDB)
 196         accounts := account.NewManager(accountStore, chain)
 197         assets := asset.NewRegistry(walletDB, chain)
 198         wallet, err := w.NewWallet(walletStore, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 199         if err != nil {
 200                 return err
 201         }
 202
 203         if err := wallet.Rollback(targetHeight); err != nil {
 204                 return err
 205         }
 206
 207         return chain.Rollback(targetHeight)
 208 }
 209
 210 func initNodeConfig(config *cfg.Config) error {
 211         if err := lockDataDirectory(config); err != nil {
 212                 log.WithField("err", err).Info("Error: " + err.Error())
 213                 return err
 214         }
 215
 216         if err := cfg.LoadFederationFile(config.FederationFile(), config); err != nil {
 217                 log.WithField("err", err).Info("Failed to load federated information")
 218                 return err
 219         }
 220
 221         if err := consensus.InitActiveNetParams(config.ChainID); err != nil {
 222                 log.Fatalf("Failed to init ActiveNetParams:[%s]", err.Error())
 223         }
 224
 225         cfg.CommonConfig = config
 226         return nil
 227 }
 228
 229 // find whether config xpubs equal genesis block xpubs
 230 func checkConfig(chain *protocol.Chain, config *cfg.Config) error {
 231         fedpegScript := cfg.FederationWScript(config)
 232         genesisBlock, err := chain.GetBlockByHeight(0)
 233         if err != nil {
 234                 return err
 235         }
 236         typedInput := genesisBlock.Transactions[0].Inputs[0].TypedInput
 237         if v, ok := typedInput.(*types.CoinbaseInput); ok {
 238                 if !reflect.DeepEqual(fedpegScript, v.Arbitrary) {
 239                         return errors.New("config xpubs don't equal genesis block xpubs")
 240                 }
 241         }
 242         return nil
 243 }
 244
 245 // Lock data directory after daemonization
 246 func lockDataDirectory(config *cfg.Config) error {
 247         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 248         if err != nil {
 249                 return errors.New("datadir already used by another process")
 250         }
 251         return nil
 252 }
 253
 254 func initCommonConfig(config *cfg.Config) {
 255         cfg.CommonConfig = config
 256 }
 257
 258 // Lanch web broser or not
 259 func launchWebBrowser(port string) {
 260         webAddress := webHost + ":" + port
 261         log.Info("Launching System Browser with :", webAddress)
 262         if err := browser.Open(webAddress); err != nil {
 263                 log.Error(err.Error())
 264                 return
 265         }
 266 }
 267
 268 func (n *Node) initAndstartAPIServer() {
 269         n.api = api.NewAPI(n.syncManager, n.wallet, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 270
 271         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 272         env.Parse()
 273         n.api.StartServer(*listenAddr)
 274 }
 275
 276 // OnStart implements BaseService
 277 func (n *Node) OnStart() error {
 278         if n.miningEnable {
 279                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 280                         n.miningEnable = false
 281                         log.Error(err)
 282                 } else {
 283                         n.cpuMiner.Start()
 284                 }
 285         }
 286         if !n.config.VaultMode {
 287                 if err := n.syncManager.Start(); err != nil {
 288                         return err
 289                 }
 290         }
 291
 292         n.initAndstartAPIServer()
 293         if err := n.notificationMgr.Start(); err != nil {
 294                 return err
 295         }
 296
 297         if !n.config.Web.Closed {
 298                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 299                 if err != nil {
 300                         log.Error("Invalid api address")
 301                         return err
 302                 }
 303                 launchWebBrowser(port)
 304         }
 305         return nil
 306 }
 307
 308 // OnStop implements BaseService
 309 func (n *Node) OnStop() {
 310         n.notificationMgr.Shutdown()
 311         n.notificationMgr.WaitForShutdown()
 312         n.BaseService.OnStop()
 313         if n.miningEnable {
 314                 n.cpuMiner.Stop()
 315         }
 316         if !n.config.VaultMode {
 317                 n.syncManager.Stop()
 318         }
 319         n.eventDispatcher.Stop()
 320 }
 321
 322 // RunForever listen to the stop signal
 323 func (n *Node) RunForever() {
 324         // Sleep forever and then...
 325         cmn.TrapSignal(func() {
 326                 n.Stop()
 327         })
 328 }