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         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 := database.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, dispatcher)
  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.WithFields(log.Fields{"module": logModule, "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, config.Wallet.TxIndex)
 109                 if err != nil {
 110                         log.WithFields(log.Fields{"module": logModule, "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,
 147
 148                 notificationMgr: notificationMgr,
 149         }
 150
 151         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 152         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 153         return node
 154 }
 155
 156 // Lock data directory after daemonization
 157 func lockDataDirectory(config *cfg.Config) error {
 158         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 159         if err != nil {
 160                 return errors.New("datadir already used by another process")
 161         }
 162         return nil
 163 }
 164
 165 func initActiveNetParams(config *cfg.Config) {
 166         var exist bool
 167         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 168         if !exist {
 169                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 170         }
 171 }
 172
 173 func initLogFile(config *cfg.Config) {
 174         if config.LogFile == "" {
 175                 return
 176         }
 177         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 178         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 179         if err == nil {
 180                 log.SetOutput(file)
 181         } else {
 182                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 183         }
 184
 185 }
 186
 187 func initCommonConfig(config *cfg.Config) {
 188         cfg.CommonConfig = config
 189 }
 190
 191 // Lanch web broser or not
 192 func launchWebBrowser(port string) {
 193         webAddress := webHost + ":" + port
 194         log.Info("Launching System Browser with :", webAddress)
 195         if err := browser.Open(webAddress); err != nil {
 196                 log.Error(err.Error())
 197                 return
 198         }
 199 }
 200
 201 func (n *Node) initAndstartAPIServer() {
 202         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 203
 204         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 205         env.Parse()
 206         n.api.StartServer(*listenAddr)
 207 }
 208
 209 func (n *Node) OnStart() error {
 210         if n.miningEnable {
 211                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 212                         n.miningEnable = false
 213                         log.Error(err)
 214                 } else {
 215                         n.cpuMiner.Start()
 216                 }
 217         }
 218         if !n.config.VaultMode {
 219                 if err := n.syncManager.Start(); err != nil {
 220                         return err
 221                 }
 222         }
 223
 224         n.initAndstartAPIServer()
 225         if err := n.notificationMgr.Start(); err != nil {
 226                 return err
 227         }
 228
 229         if !n.config.Web.Closed {
 230                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 231                 if err != nil {
 232                         log.Error("Invalid api address")
 233                         return err
 234                 }
 235                 launchWebBrowser(port)
 236         }
 237         return nil
 238 }
 239
 240 func (n *Node) OnStop() {
 241         n.notificationMgr.Shutdown()
 242         n.notificationMgr.WaitForShutdown()
 243         n.BaseService.OnStop()
 244         if n.miningEnable {
 245                 n.cpuMiner.Stop()
 246         }
 247         if !n.config.VaultMode {
 248                 n.syncManager.Stop()
 249         }
 250         n.eventDispatcher.Stop()
 251 }
 252
 253 func (n *Node) RunForever() {
 254         // Sleep forever and then...
 255         cmn.TrapSignal(func() {
 256                 n.Stop()
 257         })
 258 }