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         log "github.com/sirupsen/logrus"
  12         cmn "github.com/tendermint/tmlibs/common"
  13         browser "github.com/toqueteos/webbrowser"
  14         "github.com/prometheus/prometheus/util/flock"
  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/contract"
  25         "github.com/bytom/bytom/database"
  26         dbm "github.com/bytom/bytom/database/leveldb"
  27         "github.com/bytom/bytom/env"
  28         "github.com/bytom/bytom/event"
  29         bytomLog "github.com/bytom/bytom/log"
  30         "github.com/bytom/bytom/net/websocket"
  31         "github.com/bytom/bytom/netsync"
  32         "github.com/bytom/bytom/protocol"
  33         w "github.com/bytom/bytom/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 }
  56
  57 // NewNode create bytom node
  58 func NewNode(config *cfg.Config) *Node {
  59         ctx := context.Background()
  60         if err := lockDataDirectory(config); err != nil {
  61                 cmn.Exit("Error: " + err.Error())
  62         }
  63
  64         if err := bytomLog.InitLogFile(config); err != nil {
  65                 log.WithField("err", err).Fatalln("InitLogFile failed")
  66         }
  67
  68         initActiveNetParams(config)
  69         initCommonConfig(config)
  70
  71         // Get store
  72         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  73                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  74         }
  75         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  76         store := database.NewStore(coreDB)
  77
  78         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  79         accessTokens := accesstoken.NewStore(tokenDB)
  80
  81         dispatcher := event.NewDispatcher()
  82         txPool := protocol.NewTxPool(store, dispatcher)
  83
  84         chain, err := protocol.NewChain(store, txPool)
  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                 contracts := contract.NewRegistry(walletDB)
 112                 wallet, err = w.NewWallet(walletDB, accounts, assets, contracts, hsm, chain, dispatcher, config.Wallet.TxIndex)
 113                 if err != nil {
 114                         log.WithFields(log.Fields{"module": logModule, "error": err}).Error("init NewWallet")
 115                 }
 116
 117                 // trigger rescan wallet
 118                 if config.Wallet.Rescan {
 119                         wallet.RescanBlocks()
 120                 }
 121         }
 122
 123         fastSyncDB := dbm.NewDB("fastsync", config.DBBackend, config.DBDir())
 124         syncManager, err := netsync.NewSyncManager(config, chain, txPool, dispatcher, fastSyncDB)
 125         if err != nil {
 126                 cmn.Exit(cmn.Fmt("Failed to create sync manager: %v", err))
 127         }
 128
 129         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain, dispatcher)
 130
 131         // run the profile server
 132         profileHost := config.ProfListenAddress
 133         if profileHost != "" {
 134                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 135                 // go tool pprof http://profileHose/debug/pprof/heap
 136                 go func() {
 137                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 138                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 139                         }
 140                 }()
 141         }
 142
 143         node := &Node{
 144                 eventDispatcher: dispatcher,
 145                 config:          config,
 146                 syncManager:     syncManager,
 147                 accessTokens:    accessTokens,
 148                 wallet:          wallet,
 149                 chain:           chain,
 150                 txfeed:          txFeed,
 151
 152                 notificationMgr: notificationMgr,
 153         }
 154
 155         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 156
 157         return node
 158 }
 159
 160 // Lock data directory after daemonization
 161 func lockDataDirectory(config *cfg.Config) error {
 162         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 163         if err != nil {
 164                 return errors.New("datadir already used by another process")
 165         }
 166         return nil
 167 }
 168
 169 func initActiveNetParams(config *cfg.Config) {
 170         var exist bool
 171         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 172         if !exist {
 173                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 174         }
 175 }
 176
 177 func initCommonConfig(config *cfg.Config) {
 178         cfg.CommonConfig = config
 179 }
 180
 181 // Lanch web broser or not
 182 func launchWebBrowser(port string) {
 183         webAddress := webHost + ":" + port
 184         log.Info("Launching System Browser with :", webAddress)
 185         if err := browser.Open(webAddress); err != nil {
 186                 log.Error(err.Error())
 187                 return
 188         }
 189 }
 190
 191 func (n *Node) initAndstartAPIServer() {
 192         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.chain, n.config, n.accessTokens, n.eventDispatcher, n.notificationMgr)
 193
 194         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 195         env.Parse()
 196         n.api.StartServer(*listenAddr)
 197 }
 198
 199 func (n *Node) OnStart() error {
 200         if !n.config.VaultMode {
 201                 if err := n.syncManager.Start(); err != nil {
 202                         return err
 203                 }
 204         }
 205
 206         n.initAndstartAPIServer()
 207         if err := n.notificationMgr.Start(); err != nil {
 208                 return err
 209         }
 210
 211         if !n.config.Web.Closed {
 212                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 213                 if err != nil {
 214                         log.Error("Invalid api address")
 215                         return err
 216                 }
 217                 launchWebBrowser(port)
 218         }
 219         return nil
 220 }
 221
 222 func (n *Node) OnStop() {
 223         n.notificationMgr.Shutdown()
 224         n.notificationMgr.WaitForShutdown()
 225         n.BaseService.OnStop()
 226         if !n.config.VaultMode {
 227                 n.syncManager.Stop()
 228         }
 229         n.eventDispatcher.Stop()
 230 }
 231
 232 func (n *Node) RunForever() {
 233         // Sleep forever and then...
 234         cmn.TrapSignal(func() {
 235                 n.Stop()
 236         })
 237 }