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/net/websocket"
  31         "github.com/vapor/netsync"
  32         "github.com/vapor/protocol"
  33         w "github.com/vapor/wallet"
  34 )
  35
  36 const (
  37         webHost   = "http://127.0.0.1"
  38         logModule = "node"
  39 )
  40
  41 // Node represent bytom node
  42 type Node struct {
  43         cmn.BaseService
  44
  45         config          *cfg.Config
  46         eventDispatcher *event.Dispatcher
  47         syncManager     *netsync.SyncManager
  48
  49         wallet          *w.Wallet
  50         accessTokens    *accesstoken.CredentialStore
  51         notificationMgr *websocket.WSNotificationManager
  52         api             *api.API
  53         chain           *protocol.Chain
  54         txfeed          *txfeed.Tracker
  55         cpuMiner        *cpuminer.CPUMiner
  56         miningEnable    bool
  57 }
  58
  59 // NewNode create bytom node
  60 func NewNode(config *cfg.Config) *Node {
  61         ctx := context.Background()
  62
  63         if err := consensus.CheckFedConfig(); err == nil {
  64                 log.WithFields(log.Fields{
  65                         "module":     logModule,
  66                         "fed_xpubs":  consensus.Federation().XPubs,
  67                         "fed_quorum": consensus.Federation().Quorum,
  68                 }).Info()
  69         } else {
  70                 cmn.Exit("Error: " + err.Error())
  71         }
  72
  73         if err := lockDataDirectory(config); err != nil {
  74                 cmn.Exit("Error: " + err.Error())
  75         }
  76
  77         initLogFile(config)
  78         initActiveNetParams(config)
  79         initCommonConfig(config)
  80
  81         // Get store
  82         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  83                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  84         }
  85         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  86         store := database.NewStore(coreDB)
  87
  88         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  89         accessTokens := accesstoken.NewStore(tokenDB)
  90
  91         dispatcher := event.NewDispatcher()
  92         txPool := protocol.NewTxPool(store, dispatcher)
  93         chain, err := protocol.NewChain(store, txPool)
  94         if err != nil {
  95                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  96         }
  97
  98         var accounts *account.Manager
  99         var assets *asset.Registry
 100         var wallet *w.Wallet
 101         var txFeed *txfeed.Tracker
 102
 103         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 104         txFeed = txfeed.NewTracker(txFeedDB, chain)
 105
 106         if err = txFeed.Prepare(ctx); err != nil {
 107                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
 108                 return nil
 109         }
 110
 111         hsm, err := pseudohsm.New(config.KeysDir())
 112         if err != nil {
 113                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 114         }
 115
 116         if !config.Wallet.Disable {
 117                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 118                 accounts = account.NewManager(walletDB, chain)
 119                 assets = asset.NewRegistry(walletDB, chain)
 120                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 121                 if err != nil {
 122                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 123                 }
 124
 125                 // trigger rescan wallet
 126                 if config.Wallet.Rescan {
 127                         wallet.RescanBlocks()
 128                 }
 129         }
 130
 131         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 132         if err != nil {
 133                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 134         }
 135
 136         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 137
 138         // run the profile server
 139         profileHost := config.ProfListenAddress
 140         if profileHost != "" {
 141                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 142                 // go tool pprof http://profileHose/debug/pprof/heap
 143                 go func() {
 144                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 145                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 146                         }
 147                 }()
 148         }
 149
 150         node := &Node{
 151                 eventDispatcher: dispatcher,
 152                 config:          config,
 153                 syncManager:     syncManager,
 154                 accessTokens:    accessTokens,
 155                 wallet:          wallet,
 156                 chain:           chain,
 157                 txfeed:          txFeed,
 158                 miningEnable:    config.Mining,
 159
 160                 notificationMgr: notificationMgr,
 161         }
 162
 163         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 164         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 165         return node
 166 }
 167
 168 // Lock data directory after daemonization
 169 func lockDataDirectory(config *cfg.Config) error {
 170         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 171         if err != nil {
 172                 return errors.New("datadir already used by another process")
 173         }
 174         return nil
 175 }
 176
 177 func initActiveNetParams(config *cfg.Config) {
 178         var exist bool
 179         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 180         if !exist {
 181                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 182         }
 183 }
 184
 185 func initLogFile(config *cfg.Config) {
 186         if config.LogFile == "" {
 187                 return
 188         }
 189         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 190         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 191         if err == nil {
 192                 log.SetOutput(file)
 193         } else {
 194                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 195         }
 196
 197 }
 198
 199 func initCommonConfig(config *cfg.Config) {
 200         cfg.CommonConfig = config
 201 }
 202
 203 // Lanch web broser or not
 204 func launchWebBrowser(port string) {
 205         webAddress := webHost + ":" + port
 206         log.Info("Launching System Browser with :", webAddress)
 207         if err := browser.Open(webAddress); err != nil {
 208                 log.Error(err.Error())
 209                 return
 210         }
 211 }
 212
 213 func (n *Node) initAndstartAPIServer() {
 214         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 215
 216         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 217         env.Parse()
 218         n.api.StartServer(*listenAddr)
 219 }
 220
 221 func (n *Node) OnStart() error {
 222         if n.miningEnable {
 223                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 224                         n.miningEnable = false
 225                         log.Error(err)
 226                 } else {
 227                         n.cpuMiner.Start()
 228                 }
 229         }
 230         if !n.config.VaultMode {
 231                 if err := n.syncManager.Start(); err != nil {
 232                         return err
 233                 }
 234         }
 235
 236         n.initAndstartAPIServer()
 237         if err := n.notificationMgr.Start(); err != nil {
 238                 return err
 239         }
 240
 241         if !n.config.Web.Closed {
 242                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 243                 if err != nil {
 244                         log.Error("Invalid api address")
 245                         return err
 246                 }
 247                 launchWebBrowser(port)
 248         }
 249         return nil
 250 }
 251
 252 func (n *Node) OnStop() {
 253         n.notificationMgr.Shutdown()
 254         n.notificationMgr.WaitForShutdown()
 255         n.BaseService.OnStop()
 256         if n.miningEnable {
 257                 n.cpuMiner.Stop()
 258         }
 259         if !n.config.VaultMode {
 260                 n.syncManager.Stop()
 261         }
 262         n.eventDispatcher.Stop()
 263 }
 264
 265 func (n *Node) RunForever() {
 266         // Sleep forever and then...
 267         cmn.TrapSignal(func() {
 268                 n.Stop()
 269         })
 270 }