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/p2p"
  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         if err := lockDataDirectory(config); err != nil {
  64                 cmn.Exit("Error: " + err.Error())
  65         }
  66         initLogFile(config)
  67         initActiveNetParams(config)
  68         initCommonConfig(config)
  69
  70         // Get store
  71         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  72                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  73         }
  74         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  75         store := database.NewStore(coreDB)
  76
  77         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  78         accessTokens := accesstoken.NewStore(tokenDB)
  79
  80         dispatcher := event.NewDispatcher()
  81         txPool := protocol.NewTxPool(store, dispatcher)
  82         chain, err := protocol.NewChain(store, txPool)
  83         if err != nil {
  84                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  85         }
  86
  87         var accounts *account.Manager
  88         var assets *asset.Registry
  89         var wallet *w.Wallet
  90         var txFeed *txfeed.Tracker
  91
  92         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  93         txFeed = txfeed.NewTracker(txFeedDB, chain)
  94
  95         if err = txFeed.Prepare(ctx); err != nil {
  96                 log.WithFields(log.Fields{"module": logModule, "error": err}).Error("start txfeed")
  97                 return nil
  98         }
  99
 100         hsm, err := pseudohsm.New(config.KeysDir())
 101         if err != nil {
 102                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 103         }
 104
 105         if !config.Wallet.Disable {
 106                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 107                 accounts = account.NewManager(walletDB, chain)
 108                 assets = asset.NewRegistry(walletDB, chain)
 109                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain, dispatcher, config.Wallet.TxIndex)
 110                 if err != nil {
 111                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 112                 }
 113
 114                 // trigger rescan wallet
 115                 if config.Wallet.Rescan {
 116                         wallet.RescanBlocks()
 117                 }
 118         }
 119
 120         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher)
 121         if err != nil {
 122                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 123         }
 124
 125         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 126
 127         // run the profile server
 128         profileHost := config.ProfListenAddress
 129         if profileHost != "" {
 130                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 131                 // go tool pprof http://profileHose/debug/pprof/heap
 132                 go func() {
 133                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 134                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 135                         }
 136                 }()
 137         }
 138
 139         node := &Node{
 140                 eventDispatcher: dispatcher,
 141                 config:          config,
 142                 syncManager:     syncManager,
 143                 accessTokens:    accessTokens,
 144                 wallet:          wallet,
 145                 chain:           chain,
 146                 txfeed:          txFeed,
 147                 miningEnable:    config.Mining,
 148
 149                 notificationMgr: notificationMgr,
 150         }
 151
 152         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, dispatcher)
 153         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 154         return node
 155 }
 156
 157 // Lock data directory after daemonization
 158 func lockDataDirectory(config *cfg.Config) error {
 159         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 160         if err != nil {
 161                 return errors.New("datadir already used by another process")
 162         }
 163         return nil
 164 }
 165
 166 func initActiveNetParams(config *cfg.Config) {
 167         var exist bool
 168         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 169         if !exist {
 170                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 171         }
 172 }
 173
 174 func initLogFile(config *cfg.Config) {
 175         if config.LogFile == "" {
 176                 return
 177         }
 178         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 179         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 180         if err == nil {
 181                 log.SetOutput(file)
 182         } else {
 183                 log.WithFields(log.Fields{"module": logModule, "err": err}).Info("using default")
 184         }
 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.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 }