node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "net/http"
   6         _ "net/http/pprof"
   7         "time"
   8
   9         log "github.com/sirupsen/logrus"
  10         cmn "github.com/tendermint/tmlibs/common"
  11         dbm "github.com/tendermint/tmlibs/db"
  12         browser "github.com/toqueteos/webbrowser"
  13
  14         "github.com/bytom/accesstoken"
  15         "github.com/bytom/account"
  16         "github.com/bytom/api"
  17         "github.com/bytom/asset"
  18         "github.com/bytom/blockchain/pseudohsm"
  19         "github.com/bytom/blockchain/txfeed"
  20         cfg "github.com/bytom/config"
  21         "github.com/bytom/crypto/ed25519/chainkd"
  22         "github.com/bytom/database/leveldb"
  23         "github.com/bytom/env"
  24         "github.com/bytom/mining/cpuminer"
  25         "github.com/bytom/mining/miningpool"
  26         "github.com/bytom/netsync"
  27         "github.com/bytom/protocol"
  28         "github.com/bytom/protocol/bc"
  29         "github.com/bytom/types"
  30         w "github.com/bytom/wallet"
  31 )
  32
  33 const (
  34         webAddress               = "http://127.0.0.1:9888"
  35         expireReservationsPeriod = time.Second
  36         maxNewBlockChSize        = 1024
  37 )
  38
  39 type Node struct {
  40         cmn.BaseService
  41
  42         // config
  43         config *cfg.Config
  44
  45         syncManager *netsync.SyncManager
  46
  47         evsw types.EventSwitch // pub/sub for services
  48         //bcReactor    *bc.BlockchainReactor
  49         wallet       *w.Wallet
  50         accessTokens *accesstoken.CredentialStore
  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 func NewNode(config *cfg.Config) *Node {
  60         ctx := context.Background()
  61
  62         // Get store
  63         txDB := dbm.NewDB("txdb", config.DBBackend, config.DBDir())
  64         store := leveldb.NewStore(txDB)
  65
  66         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  67         accessTokens := accesstoken.NewStore(tokenDB)
  68
  69         // Make event switch
  70         eventSwitch := types.NewEventSwitch()
  71         _, err := eventSwitch.Start()
  72         if err != nil {
  73                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  74         }
  75
  76         txPool := protocol.NewTxPool()
  77         chain, err := protocol.NewChain(store, txPool)
  78         if err != nil {
  79                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  80         }
  81
  82         var accounts *account.Manager = nil
  83         var assets *asset.Registry = nil
  84         var wallet *w.Wallet = nil
  85         var txFeed *txfeed.Tracker = nil
  86
  87         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  88         txFeed = txfeed.NewTracker(txFeedDB, chain)
  89
  90         if err = txFeed.Prepare(ctx); err != nil {
  91                 log.WithField("error", err).Error("start txfeed")
  92                 return nil
  93         }
  94
  95         hsm, err := pseudohsm.New(config.KeysDir())
  96         if err != nil {
  97                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
  98         }
  99
 100         if !config.Wallet.Disable {
 101                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 102                 accounts = account.NewManager(walletDB, chain)
 103                 assets = asset.NewRegistry(walletDB, chain)
 104                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain)
 105                 if err != nil {
 106                         log.WithField("error", err).Error("init NewWallet")
 107                 }
 108
 109                 if err := initOrRecoverAccount(hsm, wallet); err != nil {
 110                         log.WithField("error", err).Error("initialize or recover account")
 111                 }
 112
 113                 // Clean up expired UTXO reservations periodically.
 114                 go accounts.ExpireReservations(ctx, expireReservationsPeriod)
 115         }
 116         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 117
 118         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 119
 120         // run the profile server
 121         profileHost := config.ProfListenAddress
 122         if profileHost != "" {
 123                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 124                 // go tool pprof http://profileHose/debug/pprof/heap
 125                 go func() {
 126                         http.ListenAndServe(profileHost, nil)
 127                 }()
 128         }
 129
 130         node := &Node{
 131                 config:       config,
 132                 syncManager:  syncManager,
 133                 evsw:         eventSwitch,
 134                 accessTokens: accessTokens,
 135                 wallet:       wallet,
 136                 chain:        chain,
 137                 txfeed:       txFeed,
 138                 miningEnable: config.Mining,
 139         }
 140
 141         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 142         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 143
 144         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 145
 146         return node
 147 }
 148
 149 func initOrRecoverAccount(hsm *pseudohsm.HSM, wallet *w.Wallet) error {
 150         xpubs := hsm.ListKeys()
 151
 152         if len(xpubs) == 0 {
 153                 xpub, err := hsm.XCreate("default", "123456")
 154                 if err != nil {
 155                         return err
 156                 }
 157
 158                 wallet.AccountMgr.Create(nil, []chainkd.XPub{xpub.XPub}, 1, "default")
 159                 return nil
 160         }
 161
 162         accounts, err := wallet.AccountMgr.ListAccounts("")
 163         if err != nil {
 164                 return err
 165         }
 166
 167         if len(accounts) > 0 {
 168                 return nil
 169         }
 170
 171         for i, xPub := range xpubs {
 172                 if err := wallet.ImportAccountXpubKey(i, xPub, w.RecoveryIndex); err != nil {
 173                         return err
 174                 }
 175         }
 176         return nil
 177 }
 178
 179 // Lanch web broser or not
 180 func lanchWebBroser() {
 181         log.Info("Launching System Browser with :", webAddress)
 182         if err := browser.Open(webAddress); err != nil {
 183                 log.Error(err.Error())
 184                 return
 185         }
 186 }
 187
 188 func (n *Node) initAndstartApiServer() {
 189         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 190
 191         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 192         env.Parse()
 193         n.api.StartServer(*listenAddr)
 194 }
 195
 196 func (n *Node) OnStart() error {
 197         if n.miningEnable {
 198                 n.cpuMiner.Start()
 199         }
 200         n.syncManager.Start()
 201         n.initAndstartApiServer()
 202         if !n.config.Web.Closed {
 203                 lanchWebBroser()
 204         }
 205
 206         return nil
 207 }
 208
 209 func (n *Node) OnStop() {
 210         n.BaseService.OnStop()
 211         if n.miningEnable {
 212                 n.cpuMiner.Stop()
 213         }
 214         n.syncManager.Stop()
 215         log.Info("Stopping Node")
 216         // TODO: gracefully disconnect from peers.
 217 }
 218
 219 func (n *Node) RunForever() {
 220         // Sleep forever and then...
 221         cmn.TrapSignal(func() {
 222                 n.Stop()
 223         })
 224 }
 225
 226 func (n *Node) EventSwitch() types.EventSwitch {
 227         return n.evsw
 228 }
 229
 230 func (n *Node) SyncManager() *netsync.SyncManager {
 231         return n.syncManager
 232 }
 233
 234 func (n *Node) MiningPool() *miningpool.MiningPool {
 235         return n.miningPool
 236 }
 237
 238 //------------------------------------------------------------------------------