node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "errors"
   6         "net"
   7         "net/http"
   8         _ "net/http/pprof"
   9         "path/filepath"
  10
  11         "github.com/prometheus/prometheus/util/flock"
  12         log "github.com/sirupsen/logrus"
  13         cmn "github.com/tendermint/tmlibs/common"
  14         browser "github.com/toqueteos/webbrowser"
  15
  16         "github.com/bytom/bytom/accesstoken"
  17         "github.com/bytom/bytom/account"
  18         "github.com/bytom/bytom/api"
  19         "github.com/bytom/bytom/asset"
  20         "github.com/bytom/bytom/blockchain/pseudohsm"
  21         "github.com/bytom/bytom/blockchain/txfeed"
  22         cfg "github.com/bytom/bytom/config"
  23         "github.com/bytom/bytom/consensus"
  24         "github.com/bytom/bytom/database"
  25         dbm "github.com/bytom/bytom/database/leveldb"
  26         "github.com/bytom/bytom/env"
  27         "github.com/bytom/bytom/event"
  28         bytomLog "github.com/bytom/bytom/log"
  29         "github.com/bytom/bytom/mining/cpuminer"
  30         "github.com/bytom/bytom/mining/miningpool"
  31         "github.com/bytom/bytom/mining/tensority"
  32         "github.com/bytom/bytom/net/websocket"
  33         "github.com/bytom/bytom/netsync"
  34         "github.com/bytom/bytom/p2p"
  35         "github.com/bytom/bytom/protocol"
  36         w "github.com/bytom/bytom/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
  70         if err := bytomLog.InitLogFile(config); err != nil {
  71                 log.WithField("err", err).Fatalln("InitLogFile failed")
  72         }
  73
  74         initActiveNetParams(config)
  75         initCommonConfig(config)
  76
  77         // Get store
  78         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  79                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  80         }
  81         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  82         store := database.NewStore(coreDB)
  83
  84         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  85         accessTokens := accesstoken.NewStore(tokenDB)
  86
  87         dispatcher := event.NewDispatcher()
  88         txPool := protocol.NewTxPool(store, dispatcher)
  89         chain, err := protocol.NewChain(store, txPool)
  90         if err != nil {
  91                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  92         }
  93
  94         var accounts *account.Manager
  95         var assets *asset.Registry
  96         var wallet *w.Wallet
  97         var txFeed *txfeed.Tracker
  98
  99         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 100         txFeed = txfeed.NewTracker(txFeedDB, chain)
 101
 102         if err = txFeed.Prepare(ctx); err != nil {
 103                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
 104                 return nil
 105         }
 106
 107         hsm, err := pseudohsm.New(config.KeysDir())
 108         if err != nil {
 109                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 110         }
 111
 112         if !config.Wallet.Disable {
 113                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 114                 accounts = account.NewManager(walletDB, chain)
 115                 assets = asset.NewRegistry(walletDB, chain)
 116                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 117                 if err != nil {
 118                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 119                 }
 120
 121                 // trigger rescan wallet
 122                 if config.Wallet.Rescan {
 123                         wallet.RescanBlocks()
 124                 }
 125         }
 126
 127         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 128         if err != nil {
 129                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 130         }
 131
 132         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 133
 134         // run the profile server
 135         profileHost := config.ProfListenAddress
 136         if profileHost != "" {
 137                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 138                 // go tool pprof http://profileHose/debug/pprof/heap
 139                 go func() {
 140                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 141                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 142                         }
 143                 }()
 144         }
 145
 146         node := &Node{
 147                 eventDispatcher: dispatcher,
 148                 config:          config,
 149                 syncManager:     syncManager,
 150                 accessTokens:    accessTokens,
 151                 wallet:          wallet,
 152                 chain:           chain,
 153                 txfeed:          txFeed,
 154                 miningEnable:    config.Mining,
 155
 156                 notificationMgr: notificationMgr,
 157         }
 158
 159         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 160         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, dispatcher)
 161
 162         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 163
 164         if config.Simd.Enable {
 165                 tensority.UseSIMD = true
 166         }
 167
 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 initCommonConfig(config *cfg.Config) {
 189         cfg.CommonConfig = config
 190 }
 191
 192 // Lanch web broser or not
 193 func launchWebBrowser(port string) {
 194         webAddress := webHost + ":" + port
 195         log.Info("Launching System Browser with :", webAddress)
 196         if err := browser.Open(webAddress); err != nil {
 197                 log.Error(err.Error())
 198                 return
 199         }
 200 }
 201
 202 func (n *Node) initAndstartAPIServer() {
 203         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 204
 205         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 206         env.Parse()
 207         n.api.StartServer(*listenAddr)
 208 }
 209
 210 func (n *Node) OnStart() error {
 211         if n.miningEnable {
 212                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 213                         n.miningEnable = false
 214                         log.Error(err)
 215                 } else {
 216                         n.cpuMiner.Start()
 217                 }
 218         }
 219         if !n.config.VaultMode {
 220                 if err := n.syncManager.Start(); err != nil {
 221                         return err
 222                 }
 223         }
 224
 225         n.initAndstartAPIServer()
 226         if err := n.notificationMgr.Start(); err != nil {
 227                 return err
 228         }
 229
 230         if !n.config.Web.Closed {
 231                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 232                 if err != nil {
 233                         log.Error("Invalid api address")
 234                         return err
 235                 }
 236                 launchWebBrowser(port)
 237         }
 238         return nil
 239 }
 240
 241 func (n *Node) OnStop() {
 242         n.notificationMgr.Shutdown()
 243         n.notificationMgr.WaitForShutdown()
 244         n.BaseService.OnStop()
 245         if n.miningEnable {
 246                 n.cpuMiner.Stop()
 247         }
 248         if !n.config.VaultMode {
 249                 n.syncManager.Stop()
 250         }
 251         n.eventDispatcher.Stop()
 252 }
 253
 254 func (n *Node) RunForever() {
 255         // Sleep forever and then...
 256         cmn.TrapSignal(func() {
 257                 n.Stop()
 258         })
 259 }
 260
 261 func (n *Node) NodeInfo() *p2p.NodeInfo {
 262         return n.syncManager.NodeInfo()
 263 }
 264
 265 func (n *Node) MiningPool() *miningpool.MiningPool {
 266         return n.miningPool
 267 }