node/node.go

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