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