node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "errors"
   6         "net"
   7         "net/http"
   8         "os"
   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         dbm "github.com/tendermint/tmlibs/db"
  15         browser "github.com/toqueteos/webbrowser"
  16
  17         "github.com/bytom/accesstoken"
  18         "github.com/bytom/account"
  19         "github.com/bytom/api"
  20         "github.com/bytom/asset"
  21         "github.com/bytom/blockchain/pseudohsm"
  22         "github.com/bytom/blockchain/txfeed"
  23         cfg "github.com/bytom/config"
  24         "github.com/bytom/consensus"
  25         "github.com/bytom/database/leveldb"
  26         "github.com/bytom/env"
  27         "github.com/bytom/event"
  28         "github.com/bytom/mining/cpuminer"
  29         "github.com/bytom/mining/miningpool"
  30         "github.com/bytom/mining/tensority"
  31         "github.com/bytom/net/websocket"
  32         "github.com/bytom/netsync"
  33         "github.com/bytom/p2p"
  34         "github.com/bytom/protocol"
  35         w "github.com/bytom/wallet"
  36 )
  37
  38 const webHost = "http://127.0.0.1"
  39
  40 // Node represent bytom node
  41 type Node struct {
  42         cmn.BaseService
  43
  44         config          *cfg.Config
  45         eventDispatcher *event.Dispatcher
  46         syncManager     *netsync.SyncManager
  47
  48         wallet          *w.Wallet
  49         accessTokens    *accesstoken.CredentialStore
  50         notificationMgr *websocket.WSNotificationManager
  51         api             *api.API
  52         chain           *protocol.Chain
  53         txfeed          *txfeed.Tracker
  54         cpuMiner        *cpuminer.CPUMiner
  55         miningPool      *miningpool.MiningPool
  56         miningEnable    bool
  57 }
  58
  59 // NewNode create bytom node
  60 func NewNode(config *cfg.Config) *Node {
  61         ctx := context.Background()
  62         if err := lockDataDirectory(config); err != nil {
  63                 cmn.Exit("Error: " + err.Error())
  64         }
  65         initLogFile(config)
  66         initActiveNetParams(config)
  67         initCommonConfig(config)
  68
  69         // Get store
  70         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  71                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  72         }
  73         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  74         store := leveldb.NewStore(coreDB)
  75
  76         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  77         accessTokens := accesstoken.NewStore(tokenDB)
  78
  79         dispatcher := event.NewDispatcher()
  80         txPool := protocol.NewTxPool(store, dispatcher)
  81         chain, err := protocol.NewChain(store, txPool)
  82         if err != nil {
  83                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  84         }
  85
  86         var accounts *account.Manager
  87         var assets *asset.Registry
  88         var wallet *w.Wallet
  89         var txFeed *txfeed.Tracker
  90
  91         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  92         txFeed = txfeed.NewTracker(txFeedDB, chain)
  93
  94         if err = txFeed.Prepare(ctx); err != nil {
  95                 log.WithField("error", err).Error("start txfeed")
  96                 return nil
  97         }
  98
  99         hsm, err := pseudohsm.New(config.KeysDir())
 100         if err != nil {
 101                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 102         }
 103
 104         if !config.Wallet.Disable {
 105                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 106                 accounts = account.NewManager(walletDB, chain)
 107                 assets = asset.NewRegistry(walletDB, chain)
 108                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher)
 109                 if err != nil {
 110                         log.WithField("error", err).Error("init NewWallet")
 111                 }
 112
 113                 // trigger rescan wallet
 114                 if config.Wallet.Rescan {
 115                         wallet.RescanBlocks()
 116                 }
 117         }
 118
 119         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 120         if err != nil {
 121                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 122         }
 123
 124         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 125
 126         // run the profile server
 127         profileHost := config.ProfListenAddress
 128         if profileHost != "" {
 129                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 130                 // go tool pprof http://profileHose/debug/pprof/heap
 131                 go func() {
 132                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 133                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 134                         }
 135                 }()
 136         }
 137
 138         node := &Node{
 139                 eventDispatcher: dispatcher,
 140                 config:          config,
 141                 syncManager:     syncManager,
 142                 accessTokens:    accessTokens,
 143                 wallet:          wallet,
 144                 chain:           chain,
 145                 txfeed:          txFeed,
 146                 miningEnable:    config.Mining.Enable,
 147
 148                 notificationMgr: notificationMgr,
 149         }
 150
 151         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 152         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, dispatcher, config.Mining.RecommitInterval)
 153
 154         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 155
 156         if config.Simd.Enable {
 157                 tensority.UseSIMD = true
 158         }
 159
 160         return node
 161 }
 162
 163 // Lock data directory after daemonization
 164 func lockDataDirectory(config *cfg.Config) error {
 165         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 166         if err != nil {
 167                 return errors.New("datadir already used by another process")
 168         }
 169         return nil
 170 }
 171
 172 func initActiveNetParams(config *cfg.Config) {
 173         var exist bool
 174         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 175         if !exist {
 176                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 177         }
 178 }
 179
 180 func initLogFile(config *cfg.Config) {
 181         if config.LogFile == "" {
 182                 return
 183         }
 184         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 185         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 186         if err == nil {
 187                 log.SetOutput(file)
 188         } else {
 189                 log.WithField("err", err).Info("using default")
 190         }
 191
 192 }
 193
 194 func initCommonConfig(config *cfg.Config) {
 195         cfg.CommonConfig = config
 196 }
 197
 198 // Lanch web broser or not
 199 func launchWebBrowser(port string) {
 200         webAddress := webHost + ":" + port
 201         log.Info("Launching System Browser with :", webAddress)
 202         if err := browser.Open(webAddress); err != nil {
 203                 log.Error(err.Error())
 204                 return
 205         }
 206 }
 207
 208 func (n *Node) initAndstartAPIServer() {
 209         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 210
 211         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 212         env.Parse()
 213         n.api.StartServer(*listenAddr)
 214 }
 215
 216 func (n *Node) OnStart() error {
 217         if n.miningEnable {
 218                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 219                         n.miningEnable = false
 220                         log.Error(err)
 221                 } else {
 222                         n.cpuMiner.Start()
 223                 }
 224         }
 225         if !n.config.VaultMode {
 226                 if err := n.syncManager.Start(); err != nil {
 227                         return err
 228                 }
 229         }
 230
 231         n.initAndstartAPIServer()
 232         if err := n.notificationMgr.Start(); err != nil {
 233                 return err
 234         }
 235
 236         if !n.config.Web.Closed {
 237                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 238                 if err != nil {
 239                         log.Error("Invalid api address")
 240                         return err
 241                 }
 242                 launchWebBrowser(port)
 243         }
 244         return nil
 245 }
 246
 247 func (n *Node) OnStop() {
 248         n.notificationMgr.Shutdown()
 249         n.notificationMgr.WaitForShutdown()
 250         n.BaseService.OnStop()
 251         if n.miningEnable {
 252                 n.cpuMiner.Stop()
 253         }
 254         if !n.config.VaultMode {
 255                 n.syncManager.Stop()
 256         }
 257         n.eventDispatcher.Stop()
 258 }
 259
 260 func (n *Node) RunForever() {
 261         // Sleep forever and then...
 262         cmn.TrapSignal(func() {
 263                 n.Stop()
 264         })
 265 }
 266
 267 func (n *Node) NodeInfo() *p2p.NodeInfo {
 268         return n.syncManager.NodeInfo()
 269 }
 270
 271 func (n *Node) MiningPool() *miningpool.MiningPool {
 272         return n.miningPool
 273 }