node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "encoding/hex"
   6         "errors"
   7         "net"
   8         "net/http"
   9         _ "net/http/pprof"
  10         "os"
  11         "path/filepath"
  12         "reflect"
  13
  14         "github.com/prometheus/prometheus/util/flock"
  15         log "github.com/sirupsen/logrus"
  16         cmn "github.com/tendermint/tmlibs/common"
  17         browser "github.com/toqueteos/webbrowser"
  18
  19         "github.com/vapor/accesstoken"
  20         "github.com/vapor/account"
  21         "github.com/vapor/api"
  22         "github.com/vapor/asset"
  23         "github.com/vapor/blockchain/pseudohsm"
  24         "github.com/vapor/blockchain/txfeed"
  25         cfg "github.com/vapor/config"
  26         "github.com/vapor/consensus"
  27         "github.com/vapor/database"
  28         dbm "github.com/vapor/database/leveldb"
  29         "github.com/vapor/env"
  30         "github.com/vapor/event"
  31         "github.com/vapor/net/websocket"
  32         "github.com/vapor/netsync"
  33         "github.com/vapor/proposal/blockproposer"
  34         "github.com/vapor/protocol"
  35         "github.com/vapor/protocol/bc/types"
  36         w "github.com/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         txfeed          *txfeed.Tracker
  58         cpuMiner        *blockproposer.BlockProposer
  59         miningEnable    bool
  60 }
  61
  62 // NewNode create bytom node
  63 func NewNode(config *cfg.Config) *Node {
  64         ctx := context.Background()
  65
  66         if err := lockDataDirectory(config); err != nil {
  67                 cmn.Exit("Error: " + err.Error())
  68         }
  69
  70         if err := cfg.LoadFederationFile(config.FederationFile(), config); err != nil {
  71                 cmn.Exit(cmn.Fmt("Failed to load federated information:[%s]", err.Error()))
  72         }
  73
  74         log.WithFields(log.Fields{
  75                 "module":             logModule,
  76                 "pubkey":             config.PrivateKey().XPub(),
  77                 "fed_xpubs":          config.Federation.Xpubs,
  78                 "fed_quorum":         config.Federation.Quorum,
  79                 "fed_controlprogram": hex.EncodeToString(cfg.FederationProgrom(config)),
  80         }).Info()
  81
  82         initLogFile(config)
  83         initActiveNetParams(config)
  84         initCommonConfig(config)
  85
  86         // Get store
  87         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  88                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  89         }
  90         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  91         store := database.NewStore(coreDB)
  92
  93         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  94         accessTokens := accesstoken.NewStore(tokenDB)
  95
  96         dispatcher := event.NewDispatcher()
  97         txPool := protocol.NewTxPool(store, dispatcher)
  98         chain, err := protocol.NewChain(store, txPool, dispatcher)
  99         if err != nil {
 100                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
 101         }
 102
 103         if err := checkConfig(chain, config); err != nil {
 104                 panic(err)
 105         }
 106
 107         var accounts *account.Manager
 108         var assets *asset.Registry
 109         var wallet *w.Wallet
 110         var txFeed *txfeed.Tracker
 111
 112         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 113         txFeed = txfeed.NewTracker(txFeedDB, chain)
 114
 115         if err = txFeed.Prepare(ctx); err != nil {
 116                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
 117                 return nil
 118         }
 119
 120         hsm, err := pseudohsm.New(config.KeysDir())
 121         if err != nil {
 122                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 123         }
 124
 125         if !config.Wallet.Disable {
 126                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 127                 accounts = account.NewManager(walletDB, chain)
 128                 assets = asset.NewRegistry(walletDB, chain)
 129                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 130                 if err != nil {
 131                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 132                 }
 133
 134                 // trigger rescan wallet
 135                 if config.Wallet.Rescan {
 136                         wallet.RescanBlocks()
 137                 }
 138         }
 139
 140         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 141         if err != nil {
 142                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 143         }
 144
 145         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 146
 147         // run the profile server
 148         profileHost := config.ProfListenAddress
 149         if profileHost != "" {
 150                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 151                 // go tool pprof http://profileHose/debug/pprof/heap
 152                 go func() {
 153                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 154                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 155                         }
 156                 }()
 157         }
 158
 159         node := &Node{
 160                 eventDispatcher: dispatcher,
 161                 config:          config,
 162                 syncManager:     syncManager,
 163                 accessTokens:    accessTokens,
 164                 wallet:          wallet,
 165                 chain:           chain,
 166                 txfeed:          txFeed,
 167                 miningEnable:    config.Mining,
 168
 169                 notificationMgr: notificationMgr,
 170         }
 171
 172         node.cpuMiner = blockproposer.NewBlockProposer(chain, accounts, txPool, dispatcher)
 173         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 174         return node
 175 }
 176
 177 // find whether config xpubs equal genesis block xpubs
 178 func checkConfig(chain *protocol.Chain, config *cfg.Config) error {
 179         fedpegScript := cfg.FederationProgrom(config)
 180         genesisBlock, err := chain.GetBlockByHeight(0)
 181         if err != nil {
 182                 return err
 183         }
 184         typedInput := genesisBlock.Transactions[0].Inputs[0].TypedInput
 185         if v, ok := typedInput.(*types.CoinbaseInput); ok {
 186                 if !reflect.DeepEqual(fedpegScript, v.Arbitrary) {
 187                         return errors.New("config xpubs don't equal genesis block xpubs.")
 188                 }
 189         }
 190         return nil
 191 }
 192
 193 // Lock data directory after daemonization
 194 func lockDataDirectory(config *cfg.Config) error {
 195         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 196         if err != nil {
 197                 return errors.New("datadir already used by another process")
 198         }
 199         return nil
 200 }
 201
 202 func initActiveNetParams(config *cfg.Config) {
 203         var exist bool
 204         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 205         if !exist {
 206                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 207         }
 208 }
 209
 210 func initLogFile(config *cfg.Config) {
 211         if config.LogFile == "" {
 212                 return
 213         }
 214         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 215         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 216         if err == nil {
 217                 log.SetOutput(file)
 218         } else {
 219                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 220         }
 221
 222 }
 223
 224 func initCommonConfig(config *cfg.Config) {
 225         cfg.CommonConfig = config
 226 }
 227
 228 // Lanch web broser or not
 229 func launchWebBrowser(port string) {
 230         webAddress := webHost + ":" + port
 231         log.Info("Launching System Browser with :", webAddress)
 232         if err := browser.Open(webAddress); err != nil {
 233                 log.Error(err.Error())
 234                 return
 235         }
 236 }
 237
 238 func (n *Node) initAndstartAPIServer() {
 239         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 240
 241         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 242         env.Parse()
 243         n.api.StartServer(*listenAddr)
 244 }
 245
 246 func (n *Node) OnStart() error {
 247         if n.miningEnable {
 248                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 249                         n.miningEnable = false
 250                         log.Error(err)
 251                 } else {
 252                         n.cpuMiner.Start()
 253                 }
 254         }
 255         if !n.config.VaultMode {
 256                 if err := n.syncManager.Start(); err != nil {
 257                         return err
 258                 }
 259         }
 260
 261         n.initAndstartAPIServer()
 262         if err := n.notificationMgr.Start(); err != nil {
 263                 return err
 264         }
 265
 266         if !n.config.Web.Closed {
 267                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 268                 if err != nil {
 269                         log.Error("Invalid api address")
 270                         return err
 271                 }
 272                 launchWebBrowser(port)
 273         }
 274         return nil
 275 }
 276
 277 func (n *Node) OnStop() {
 278         n.notificationMgr.Shutdown()
 279         n.notificationMgr.WaitForShutdown()
 280         n.BaseService.OnStop()
 281         if n.miningEnable {
 282                 n.cpuMiner.Stop()
 283         }
 284         if !n.config.VaultMode {
 285                 n.syncManager.Stop()
 286         }
 287         n.eventDispatcher.Stop()
 288 }
 289
 290 func (n *Node) RunForever() {
 291         // Sleep forever and then...
 292         cmn.TrapSignal(func() {
 293                 n.Stop()
 294         })
 295 }