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         if err := consensus.InitActiveNetParams(config.ChainID); err != nil {
  79                 log.Fatalf("Failed to init ActiveNetParams:[%s]", err.Error())
  80         }
  81         initCommonConfig(config)
  82
  83         // Get store
  84         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  85                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  86         }
  87         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  88         store := database.NewStore(coreDB)
  89
  90         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  91         accessTokens := accesstoken.NewStore(tokenDB)
  92
  93         dispatcher := event.NewDispatcher()
  94         txPool := protocol.NewTxPool(store, dispatcher)
  95         chain, err := protocol.NewChain(store, txPool, dispatcher)
  96         if err != nil {
  97                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  98         }
  99
 100         if err := checkConfig(chain, config); err != nil {
 101                 panic(err)
 102         }
 103
 104         var accounts *account.Manager
 105         var assets *asset.Registry
 106         var wallet *w.Wallet
 107
 108         hsm, err := pseudohsm.New(config.KeysDir())
 109         if err != nil {
 110                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 111         }
 112
 113         if !config.Wallet.Disable {
 114                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 115                 walletStore := database.NewWalletStore(walletDB)
 116                 accountStore := database.NewAccountStore(walletDB)
 117                 accounts = account.NewManager(accountStore, chain)
 118                 assets = asset.NewRegistry(walletDB, chain)
 119                 wallet, err = w.NewWallet(walletStore, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 120                 if err != nil {
 121                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 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 // find whether config xpubs equal genesis block xpubs
 167 func checkConfig(chain *protocol.Chain, config *cfg.Config) error {
 168         fedpegScript := cfg.FederationWScript(config)
 169         genesisBlock, err := chain.GetBlockByHeight(0)
 170         if err != nil {
 171                 return err
 172         }
 173         typedInput := genesisBlock.Transactions[0].Inputs[0].TypedInput
 174         if v, ok := typedInput.(*types.CoinbaseInput); ok {
 175                 if !reflect.DeepEqual(fedpegScript, v.Arbitrary) {
 176                         return errors.New("config xpubs don't equal genesis block xpubs.")
 177                 }
 178         }
 179         return nil
 180 }
 181
 182 // Lock data directory after daemonization
 183 func lockDataDirectory(config *cfg.Config) error {
 184         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 185         if err != nil {
 186                 return errors.New("datadir already used by another process")
 187         }
 188         return nil
 189 }
 190
 191 func initLogFile(config *cfg.Config) {
 192         if config.LogFile == "" {
 193                 return
 194         }
 195         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 196         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 197         if err == nil {
 198                 log.SetOutput(file)
 199         } else {
 200                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 201         }
 202
 203 }
 204
 205 func initCommonConfig(config *cfg.Config) {
 206         cfg.CommonConfig = config
 207 }
 208
 209 // Lanch web broser or not
 210 func launchWebBrowser(port string) {
 211         webAddress := webHost + ":" + port
 212         log.Info("Launching System Browser with :", webAddress)
 213         if err := browser.Open(webAddress); err != nil {
 214                 log.Error(err.Error())
 215                 return
 216         }
 217 }
 218
 219 func (n *Node) initAndstartAPIServer() {
 220         n.api = api.NewAPI(n.syncManager, n.wallet, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 221
 222         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 223         env.Parse()
 224         n.api.StartServer(*listenAddr)
 225 }
 226
 227 func (n *Node) OnStart() error {
 228         if n.miningEnable {
 229                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 230                         n.miningEnable = false
 231                         log.Error(err)
 232                 } else {
 233                         n.cpuMiner.Start()
 234                 }
 235         }
 236         if !n.config.VaultMode {
 237                 if err := n.syncManager.Start(); err != nil {
 238                         return err
 239                 }
 240         }
 241
 242         n.initAndstartAPIServer()
 243         if err := n.notificationMgr.Start(); err != nil {
 244                 return err
 245         }
 246
 247         if !n.config.Web.Closed {
 248                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 249                 if err != nil {
 250                         log.Error("Invalid api address")
 251                         return err
 252                 }
 253                 launchWebBrowser(port)
 254         }
 255         return nil
 256 }
 257
 258 func (n *Node) OnStop() {
 259         n.notificationMgr.Shutdown()
 260         n.notificationMgr.WaitForShutdown()
 261         n.BaseService.OnStop()
 262         if n.miningEnable {
 263                 n.cpuMiner.Stop()
 264         }
 265         if !n.config.VaultMode {
 266                 n.syncManager.Stop()
 267         }
 268         n.eventDispatcher.Stop()
 269 }
 270
 271 func (n *Node) RunForever() {
 272         // Sleep forever and then...
 273         cmn.TrapSignal(func() {
 274                 n.Stop()
 275         })
 276 }