node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "errors"
   6         "net"
   7         "net/http"
   8         _ "net/http/pprof"
   9         "os"
  10         "path/filepath"
  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         "github.com/vapor/blockchain/txfeed"
  23         cfg "github.com/vapor/config"
  24         "github.com/vapor/consensus"
  25         "github.com/vapor/consensus/federation"
  26         "github.com/vapor/database"
  27         dbm "github.com/vapor/database/leveldb"
  28         "github.com/vapor/env"
  29         "github.com/vapor/event"
  30         "github.com/vapor/mining/cpuminer"
  31         "github.com/vapor/net/websocket"
  32         "github.com/vapor/netsync"
  33         "github.com/vapor/protocol"
  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         txfeed          *txfeed.Tracker
  56         cpuMiner        *cpuminer.CPUMiner
  57         miningEnable    bool
  58 }
  59
  60 // NewNode create bytom node
  61 func NewNode(config *cfg.Config) *Node {
  62         ctx := context.Background()
  63
  64         if err := federation.CheckFedConfig(); err == nil {
  65                 fed := federation.GetFederation()
  66                 log.WithFields(log.Fields{
  67                         "module":             logModule,
  68                         "fed_xpubs":          fed.XPubs,
  69                         "fed_quorum":         fed.Quorum,
  70                         "fed_controlprogram": fed.ControlProgram,
  71                 }).Info()
  72         } else {
  73                 log.Fatal("Error:", err)
  74         }
  75
  76         if err := lockDataDirectory(config); err != nil {
  77                 cmn.Exit("Error: " + err.Error())
  78         }
  79
  80         initLogFile(config)
  81         initActiveNetParams(config)
  82         initCommonConfig(config)
  83
  84         // Get store
  85         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  86                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  87         }
  88         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  89         store := database.NewStore(coreDB)
  90
  91         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  92         accessTokens := accesstoken.NewStore(tokenDB)
  93
  94         dispatcher := event.NewDispatcher()
  95         txPool := protocol.NewTxPool(store, dispatcher)
  96         chain, err := protocol.NewChain(store, txPool, dispatcher)
  97         if err != nil {
  98                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  99         }
 100
 101         var accounts *account.Manager
 102         var assets *asset.Registry
 103         var wallet *w.Wallet
 104         var txFeed *txfeed.Tracker
 105
 106         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 107         txFeed = txfeed.NewTracker(txFeedDB, chain)
 108
 109         if err = txFeed.Prepare(ctx); err != nil {
 110                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
 111                 return nil
 112         }
 113
 114         hsm, err := pseudohsm.New(config.KeysDir())
 115         if err != nil {
 116                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 117         }
 118
 119         if !config.Wallet.Disable {
 120                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 121                 accounts = account.NewManager(walletDB, chain)
 122                 assets = asset.NewRegistry(walletDB, chain)
 123                 wallet, err = w.NewWallet(walletDB, 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
 134         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 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 bytomd 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                 txfeed:          txFeed,
 161                 miningEnable:    config.Mining,
 162
 163                 notificationMgr: notificationMgr,
 164         }
 165
 166         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 167         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 168         return node
 169 }
 170
 171 // Lock data directory after daemonization
 172 func lockDataDirectory(config *cfg.Config) error {
 173         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 174         if err != nil {
 175                 return errors.New("datadir already used by another process")
 176         }
 177         return nil
 178 }
 179
 180 func initActiveNetParams(config *cfg.Config) {
 181         var exist bool
 182         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 183         if !exist {
 184                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 185         }
 186 }
 187
 188 func initLogFile(config *cfg.Config) {
 189         if config.LogFile == "" {
 190                 return
 191         }
 192         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 193         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 194         if err == nil {
 195                 log.SetOutput(file)
 196         } else {
 197                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 198         }
 199
 200 }
 201
 202 func initCommonConfig(config *cfg.Config) {
 203         cfg.CommonConfig = config
 204 }
 205
 206 // Lanch web broser or not
 207 func launchWebBrowser(port string) {
 208         webAddress := webHost + ":" + port
 209         log.Info("Launching System Browser with :", webAddress)
 210         if err := browser.Open(webAddress); err != nil {
 211                 log.Error(err.Error())
 212                 return
 213         }
 214 }
 215
 216 func (n *Node) initAndstartAPIServer() {
 217         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 218
 219         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 220         env.Parse()
 221         n.api.StartServer(*listenAddr)
 222 }
 223
 224 func (n *Node) OnStart() error {
 225         if n.miningEnable {
 226                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 227                         n.miningEnable = false
 228                         log.Error(err)
 229                 } else {
 230                         n.cpuMiner.Start()
 231                 }
 232         }
 233         if !n.config.VaultMode {
 234                 if err := n.syncManager.Start(); err != nil {
 235                         return err
 236                 }
 237         }
 238
 239         n.initAndstartAPIServer()
 240         if err := n.notificationMgr.Start(); err != nil {
 241                 return err
 242         }
 243
 244         if !n.config.Web.Closed {
 245                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 246                 if err != nil {
 247                         log.Error("Invalid api address")
 248                         return err
 249                 }
 250                 launchWebBrowser(port)
 251         }
 252         return nil
 253 }
 254
 255 func (n *Node) OnStop() {
 256         n.notificationMgr.Shutdown()
 257         n.notificationMgr.WaitForShutdown()
 258         n.BaseService.OnStop()
 259         if n.miningEnable {
 260                 n.cpuMiner.Stop()
 261         }
 262         if !n.config.VaultMode {
 263                 n.syncManager.Stop()
 264         }
 265         n.eventDispatcher.Stop()
 266 }
 267
 268 func (n *Node) RunForever() {
 269         // Sleep forever and then...
 270         cmn.TrapSignal(func() {
 271                 n.Stop()
 272         })
 273 }