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/database"
  26         dbm "github.com/vapor/database/leveldb"
  27         "github.com/vapor/env"
  28         "github.com/vapor/event"
  29         "github.com/vapor/mining/cpuminer"
  30         "github.com/vapor/mining/miningpool"
  31         "github.com/vapor/mining/tensority"
  32         "github.com/vapor/net/websocket"
  33         "github.com/vapor/netsync"
  34         "github.com/vapor/p2p"
  35         "github.com/vapor/protocol"
  36         w "github.com/vapor/wallet"
  37 )
  38
  39 const (
  40         webHost   = "http://127.0.0.1"
  41         logModule = "node"
  42 )
  43
  44 // Node represent bytom node
  45 type Node struct {
  46         cmn.BaseService
  47
  48         config          *cfg.Config
  49         eventDispatcher *event.Dispatcher
  50         syncManager     *netsync.SyncManager
  51
  52         wallet          *w.Wallet
  53         accessTokens    *accesstoken.CredentialStore
  54         notificationMgr *websocket.WSNotificationManager
  55         api             *api.API
  56         chain           *protocol.Chain
  57         txfeed          *txfeed.Tracker
  58         cpuMiner        *cpuminer.CPUMiner
  59         miningPool      *miningpool.MiningPool
  60         miningEnable    bool
  61 }
  62
  63 // NewNode create bytom node
  64 func NewNode(config *cfg.Config) *Node {
  65         ctx := context.Background()
  66         if err := lockDataDirectory(config); err != nil {
  67                 cmn.Exit("Error: " + err.Error())
  68         }
  69         initLogFile(config)
  70         initActiveNetParams(config)
  71         initCommonConfig(config)
  72
  73         // Get store
  74         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  75                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  76         }
  77         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  78         store := database.NewStore(coreDB)
  79
  80         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  81         accessTokens := accesstoken.NewStore(tokenDB)
  82
  83         dispatcher := event.NewDispatcher()
  84         txPool := protocol.NewTxPool(store, dispatcher)
  85         chain, err := protocol.NewChain(store, txPool)
  86         if err != nil {
  87                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  88         }
  89
  90         var accounts *account.Manager
  91         var assets *asset.Registry
  92         var wallet *w.Wallet
  93         var txFeed *txfeed.Tracker
  94
  95         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  96         txFeed = txfeed.NewTracker(txFeedDB, chain)
  97
  98         if err = txFeed.Prepare(ctx); err != nil {
  99                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
 100                 return nil
 101         }
 102
 103         hsm, err := pseudohsm.New(config.KeysDir())
 104         if err != nil {
 105                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 106         }
 107
 108         if !config.Wallet.Disable {
 109                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 110                 accounts = account.NewManager(walletDB, chain)
 111                 assets = asset.NewRegistry(walletDB, chain)
 112                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 113                 if err != nil {
 114                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 115                 }
 116
 117                 // trigger rescan wallet
 118                 if config.Wallet.Rescan {
 119                         wallet.RescanBlocks()
 120                 }
 121         }
 122
 123         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 124         if err != nil {
 125                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 126         }
 127
 128         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 129
 130         // run the profile server
 131         profileHost := config.ProfListenAddress
 132         if profileHost != "" {
 133                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 134                 // go tool pprof http://profileHose/debug/pprof/heap
 135                 go func() {
 136                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 137                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 138                         }
 139                 }()
 140         }
 141
 142         node := &Node{
 143                 eventDispatcher: dispatcher,
 144                 config:          config,
 145                 syncManager:     syncManager,
 146                 accessTokens:    accessTokens,
 147                 wallet:          wallet,
 148                 chain:           chain,
 149                 txfeed:          txFeed,
 150                 miningEnable:    config.Mining,
 151
 152                 notificationMgr: notificationMgr,
 153         }
 154
 155         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 156         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, dispatcher)
 157
 158         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 159
 160         if config.Simd.Enable {
 161                 tensority.UseSIMD = true
 162         }
 163
 164         return node
 165 }
 166
 167 // Lock data directory after daemonization
 168 func lockDataDirectory(config *cfg.Config) error {
 169         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 170         if err != nil {
 171                 return errors.New("datadir already used by another process")
 172         }
 173         return nil
 174 }
 175
 176 func initActiveNetParams(config *cfg.Config) {
 177         var exist bool
 178         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 179         if !exist {
 180                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 181         }
 182 }
 183
 184 func initLogFile(config *cfg.Config) {
 185         if config.LogFile == "" {
 186                 return
 187         }
 188         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 189         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 190         if err == nil {
 191                 log.SetOutput(file)
 192         } else {
 193                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 194         }
 195
 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.txfeed, n.cpuMiner, n.miningPool, 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 }
 270
 271 func (n *Node) NodeInfo() *p2p.NodeInfo {
 272         return n.syncManager.NodeInfo()
 273 }
 274
 275 func (n *Node) MiningPool() *miningpool.MiningPool {
 276         return n.miningPool
 277 }