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