node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "encoding/hex"
   6         "errors"
   7         "net"
   8         "net/http"
   9         _ "net/http/pprof"
  10         "os"
  11         "path/filepath"
  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         "github.com/vapor/blockchain/txfeed"
  24         cfg "github.com/vapor/config"
  25         "github.com/vapor/consensus"
  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         log.WithFields(log.Fields{
  65                 "module":             logModule,
  66                 "fed_xpubs":          config.Federation.Xpubs,
  67                 "fed_quorum":         config.Federation.Quorum,
  68                 "fed_controlprogram": hex.EncodeToString(cfg.GenesisArguments(config)),
  69         }).Info()
  70
  71         if err := lockDataDirectory(config); err != nil {
  72                 cmn.Exit("Error: " + err.Error())
  73         }
  74
  75         initLogFile(config)
  76         initActiveNetParams(config)
  77         initCommonConfig(config)
  78
  79         // Get store
  80         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  81                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  82         }
  83         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  84         store := database.NewStore(coreDB)
  85
  86         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  87         accessTokens := accesstoken.NewStore(tokenDB)
  88
  89         dispatcher := event.NewDispatcher()
  90         txPool := protocol.NewTxPool(store, dispatcher)
  91         chain, err := protocol.NewChain(store, txPool, dispatcher)
  92         if err != nil {
  93                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  94         }
  95
  96         var accounts *account.Manager
  97         var assets *asset.Registry
  98         var wallet *w.Wallet
  99         var txFeed *txfeed.Tracker
 100
 101         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 102         txFeed = txfeed.NewTracker(txFeedDB, chain)
 103
 104         if err = txFeed.Prepare(ctx); err != nil {
 105                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
 106                 return nil
 107         }
 108
 109         hsm, err := pseudohsm.New(config.KeysDir())
 110         if err != nil {
 111                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 112         }
 113
 114         if !config.Wallet.Disable {
 115                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 116                 accounts = account.NewManager(walletDB, chain)
 117                 assets = asset.NewRegistry(walletDB, chain)
 118                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 119                 if err != nil {
 120                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 121                 }
 122
 123                 // trigger rescan wallet
 124                 if config.Wallet.Rescan {
 125                         wallet.RescanBlocks()
 126                 }
 127         }
 128
 129         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 130         if err != nil {
 131                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 132         }
 133
 134         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 135
 136         // run the profile server
 137         profileHost := config.ProfListenAddress
 138         if profileHost != "" {
 139                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 140                 // go tool pprof http://profileHose/debug/pprof/heap
 141                 go func() {
 142                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 143                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 144                         }
 145                 }()
 146         }
 147
 148         node := &Node{
 149                 eventDispatcher: dispatcher,
 150                 config:          config,
 151                 syncManager:     syncManager,
 152                 accessTokens:    accessTokens,
 153                 wallet:          wallet,
 154                 chain:           chain,
 155                 txfeed:          txFeed,
 156                 miningEnable:    config.Mining,
 157
 158                 notificationMgr: notificationMgr,
 159         }
 160
 161         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 162         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 163         return node
 164 }
 165
 166 // Lock data directory after daemonization
 167 func lockDataDirectory(config *cfg.Config) error {
 168         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 169         if err != nil {
 170                 return errors.New("datadir already used by another process")
 171         }
 172         return nil
 173 }
 174
 175 func initActiveNetParams(config *cfg.Config) {
 176         var exist bool
 177         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 178         if !exist {
 179                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 180         }
 181 }
 182
 183 func initLogFile(config *cfg.Config) {
 184         if config.LogFile == "" {
 185                 return
 186         }
 187         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 188         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 189         if err == nil {
 190                 log.SetOutput(file)
 191         } else {
 192                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 193         }
 194
 195 }
 196
 197 func initCommonConfig(config *cfg.Config) {
 198         cfg.CommonConfig = config
 199 }
 200
 201 // Lanch web broser or not
 202 func launchWebBrowser(port string) {
 203         webAddress := webHost + ":" + port
 204         log.Info("Launching System Browser with :", webAddress)
 205         if err := browser.Open(webAddress); err != nil {
 206                 log.Error(err.Error())
 207                 return
 208         }
 209 }
 210
 211 func (n *Node) initAndstartAPIServer() {
 212         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 213
 214         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 215         env.Parse()
 216         n.api.StartServer(*listenAddr)
 217 }
 218
 219 func (n *Node) OnStart() error {
 220         if n.miningEnable {
 221                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 222                         n.miningEnable = false
 223                         log.Error(err)
 224                 } else {
 225                         n.cpuMiner.Start()
 226                 }
 227         }
 228         if !n.config.VaultMode {
 229                 if err := n.syncManager.Start(); err != nil {
 230                         return err
 231                 }
 232         }
 233
 234         n.initAndstartAPIServer()
 235         if err := n.notificationMgr.Start(); err != nil {
 236                 return err
 237         }
 238
 239         if !n.config.Web.Closed {
 240                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 241                 if err != nil {
 242                         log.Error("Invalid api address")
 243                         return err
 244                 }
 245                 launchWebBrowser(port)
 246         }
 247         return nil
 248 }
 249
 250 func (n *Node) OnStop() {
 251         n.notificationMgr.Shutdown()
 252         n.notificationMgr.WaitForShutdown()
 253         n.BaseService.OnStop()
 254         if n.miningEnable {
 255                 n.cpuMiner.Stop()
 256         }
 257         if !n.config.VaultMode {
 258                 n.syncManager.Stop()
 259         }
 260         n.eventDispatcher.Stop()
 261 }
 262
 263 func (n *Node) RunForever() {
 264         // Sleep forever and then...
 265         cmn.TrapSignal(func() {
 266                 n.Stop()
 267         })
 268 }