node/node.go

   1 package node
   2
   3 import (
   4         "encoding/hex"
   5         "errors"
   6         "net"
   7         "net/http"
   8         _ "net/http/pprof"
   9         "os"
  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/vapor/accesstoken"
  19         "github.com/vapor/account"
  20         "github.com/vapor/api"
  21         "github.com/vapor/asset"
  22         "github.com/vapor/blockchain/pseudohsm"
  23         cfg "github.com/vapor/config"
  24         "github.com/vapor/consensus"
  25         "github.com/vapor/database"
  26         dbm "github.com/vapor/database/leveldb"
  27         "github.com/vapor/env"
  28         "github.com/vapor/event"
  29         "github.com/vapor/net/websocket"
  30         "github.com/vapor/netsync"
  31         "github.com/vapor/proposal/blockproposer"
  32         "github.com/vapor/protocol"
  33         "github.com/vapor/protocol/bc/types"
  34         w "github.com/vapor/wallet"
  35 )
  36
  37 const (
  38         webHost   = "http://127.0.0.1"
  39         logModule = "node"
  40 )
  41
  42 // Node represent bytom node
  43 type Node struct {
  44         cmn.BaseService
  45
  46         config          *cfg.Config
  47         eventDispatcher *event.Dispatcher
  48         syncManager     *netsync.SyncManager
  49
  50         wallet          *w.Wallet
  51         accessTokens    *accesstoken.CredentialStore
  52         notificationMgr *websocket.WSNotificationManager
  53         api             *api.API
  54         chain           *protocol.Chain
  55         cpuMiner        *blockproposer.BlockProposer
  56         miningEnable    bool
  57 }
  58
  59 // NewNode create bytom node
  60 func NewNode(config *cfg.Config) *Node {
  61         if err := lockDataDirectory(config); err != nil {
  62                 cmn.Exit("Error: " + err.Error())
  63         }
  64
  65         if err := cfg.LoadFederationFile(config.FederationFile(), config); err != nil {
  66                 cmn.Exit(cmn.Fmt("Failed to load federated information:[%s]", err.Error()))
  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         initLogFile(config)
  78         initActiveNetParams(config)
  79         initCommonConfig(config)
  80
  81         // Get store
  82         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  83                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  84         }
  85         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  86         store := database.NewStore(coreDB)
  87
  88         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  89         accessTokens := accesstoken.NewStore(tokenDB)
  90
  91         dispatcher := event.NewDispatcher()
  92         txPool := protocol.NewTxPool(store, dispatcher)
  93         chain, err := protocol.NewChain(store, txPool, dispatcher)
  94         if err != nil {
  95                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  96         }
  97
  98         if err := checkConfig(chain, config); err != nil {
  99                 panic(err)
 100         }
 101
 102         var accounts *account.Manager
 103         var assets *asset.Registry
 104         var wallet *w.Wallet
 105
 106         hsm, err := pseudohsm.New(config.KeysDir())
 107         if err != nil {
 108                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 109         }
 110
 111         if !config.Wallet.Disable {
 112                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 113                 accounts = account.NewManager(walletDB, chain)
 114                 assets = asset.NewRegistry(walletDB, chain)
 115                 wallet, err = w.NewWallet(walletDB, 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                 // trigger rescan wallet
 121                 if config.Wallet.Rescan {
 122                         wallet.RescanBlocks()
 123                 }
 124         }
 125
 126         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 127         if err != nil {
 128                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 129         }
 130
 131         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 132
 133         // run the profile server
 134         profileHost := config.ProfListenAddress
 135         if profileHost != "" {
 136                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 137                 // go tool pprof http://profileHose/debug/pprof/heap
 138                 go func() {
 139                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 140                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 141                         }
 142                 }()
 143         }
 144
 145         node := &Node{
 146                 eventDispatcher: dispatcher,
 147                 config:          config,
 148                 syncManager:     syncManager,
 149                 accessTokens:    accessTokens,
 150                 wallet:          wallet,
 151                 chain:           chain,
 152                 miningEnable:    config.Mining,
 153
 154                 notificationMgr: notificationMgr,
 155         }
 156
 157         node.cpuMiner = blockproposer.NewBlockProposer(chain, accounts, txPool, dispatcher)
 158         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 159         return node
 160 }
 161
 162 // find whether config xpubs equal genesis block xpubs
 163 func checkConfig(chain *protocol.Chain, config *cfg.Config) error {
 164         fedpegScript := cfg.FederationWScript(config)
 165         genesisBlock, err := chain.GetBlockByHeight(0)
 166         if err != nil {
 167                 return err
 168         }
 169         typedInput := genesisBlock.Transactions[0].Inputs[0].TypedInput
 170         if v, ok := typedInput.(*types.CoinbaseInput); ok {
 171                 if !reflect.DeepEqual(fedpegScript, v.Arbitrary) {
 172                         return errors.New("config xpubs don't equal genesis block xpubs.")
 173                 }
 174         }
 175         return nil
 176 }
 177
 178 // Lock data directory after daemonization
 179 func lockDataDirectory(config *cfg.Config) error {
 180         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 181         if err != nil {
 182                 return errors.New("datadir already used by another process")
 183         }
 184         return nil
 185 }
 186
 187 func initActiveNetParams(config *cfg.Config) {
 188         var exist bool
 189         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 190         if !exist {
 191                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 192         }
 193 }
 194
 195 func initLogFile(config *cfg.Config) {
 196         if config.LogFile == "" {
 197                 return
 198         }
 199         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 200         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 201         if err == nil {
 202                 log.SetOutput(file)
 203         } else {
 204                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 205         }
 206
 207 }
 208
 209 func initCommonConfig(config *cfg.Config) {
 210         cfg.CommonConfig = config
 211 }
 212
 213 // Lanch web broser or not
 214 func launchWebBrowser(port string) {
 215         webAddress := webHost + ":" + port
 216         log.Info("Launching System Browser with :", webAddress)
 217         if err := browser.Open(webAddress); err != nil {
 218                 log.Error(err.Error())
 219                 return
 220         }
 221 }
 222
 223 func (n *Node) initAndstartAPIServer() {
 224         n.api = api.NewAPI(n.syncManager, n.wallet, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 225
 226         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 227         env.Parse()
 228         n.api.StartServer(*listenAddr)
 229 }
 230
 231 func (n *Node) OnStart() error {
 232         if n.miningEnable {
 233                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 234                         n.miningEnable = false
 235                         log.Error(err)
 236                 } else {
 237                         n.cpuMiner.Start()
 238                 }
 239         }
 240         if !n.config.VaultMode {
 241                 if err := n.syncManager.Start(); err != nil {
 242                         return err
 243                 }
 244         }
 245
 246         n.initAndstartAPIServer()
 247         if err := n.notificationMgr.Start(); err != nil {
 248                 return err
 249         }
 250
 251         if !n.config.Web.Closed {
 252                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 253                 if err != nil {
 254                         log.Error("Invalid api address")
 255                         return err
 256                 }
 257                 launchWebBrowser(port)
 258         }
 259         return nil
 260 }
 261
 262 func (n *Node) OnStop() {
 263         n.notificationMgr.Shutdown()
 264         n.notificationMgr.WaitForShutdown()
 265         n.BaseService.OnStop()
 266         if n.miningEnable {
 267                 n.cpuMiner.Stop()
 268         }
 269         if !n.config.VaultMode {
 270                 n.syncManager.Stop()
 271         }
 272         n.eventDispatcher.Stop()
 273 }
 274
 275 func (n *Node) RunForever() {
 276         // Sleep forever and then...
 277         cmn.TrapSignal(func() {
 278                 n.Stop()
 279         })
 280 }