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/consensus"
  22         "github.com/bytom/crypto/ed25519/chainkd"
  23         "github.com/bytom/database/leveldb"
  24         "github.com/bytom/env"
  25         "github.com/bytom/mining/cpuminer"
  26         "github.com/bytom/mining/miningpool"
  27         "github.com/bytom/netsync"
  28         "github.com/bytom/protocol"
  29         "github.com/bytom/protocol/bc"
  30         "github.com/bytom/types"
  31         w "github.com/bytom/wallet"
  32 )
  33
  34 const (
  35         webAddress               = "http://127.0.0.1:9888"
  36         expireReservationsPeriod = time.Second
  37         maxNewBlockChSize        = 1024
  38 )
  39
  40 type Node struct {
  41         cmn.BaseService
  42
  43         // config
  44         config *cfg.Config
  45
  46         syncManager *netsync.SyncManager
  47
  48         evsw types.EventSwitch // pub/sub for services
  49         //bcReactor    *bc.BlockchainReactor
  50         wallet       *w.Wallet
  51         accessTokens *accesstoken.CredentialStore
  52         api          *api.API
  53         chain        *protocol.Chain
  54         txfeed       *txfeed.Tracker
  55         cpuMiner     *cpuminer.CPUMiner
  56         miningPool   *miningpool.MiningPool
  57         miningEnable bool
  58 }
  59
  60 func NewNode(config *cfg.Config) *Node {
  61         ctx := context.Background()
  62         if config.ChainID == "testnet" {
  63                 consensus.ActiveNetParams = &consensus.TestNetParams
  64         }
  65         // Get store
  66         txDB := dbm.NewDB("txdb", config.DBBackend, config.DBDir())
  67         store := leveldb.NewStore(txDB)
  68
  69         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  70         accessTokens := accesstoken.NewStore(tokenDB)
  71
  72         // Make event switch
  73         eventSwitch := types.NewEventSwitch()
  74         _, err := eventSwitch.Start()
  75         if err != nil {
  76                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  77         }
  78
  79         txPool := protocol.NewTxPool()
  80         chain, err := protocol.NewChain(store, txPool)
  81         if err != nil {
  82                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  83         }
  84
  85         var accounts *account.Manager = nil
  86         var assets *asset.Registry = nil
  87         var wallet *w.Wallet = nil
  88         var txFeed *txfeed.Tracker = nil
  89
  90         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  91         txFeed = txfeed.NewTracker(txFeedDB, chain)
  92
  93         if err = txFeed.Prepare(ctx); err != nil {
  94                 log.WithField("error", err).Error("start txfeed")
  95                 return nil
  96         }
  97
  98         hsm, err := pseudohsm.New(config.KeysDir())
  99         if err != nil {
 100                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 101         }
 102
 103         if !config.Wallet.Disable {
 104                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 105                 accounts = account.NewManager(walletDB, chain)
 106                 assets = asset.NewRegistry(walletDB, chain)
 107                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain)
 108                 if err != nil {
 109                         log.WithField("error", err).Error("init NewWallet")
 110                 }
 111
 112                 if err := initOrRecoverAccount(hsm, wallet); err != nil {
 113                         log.WithField("error", err).Error("initialize or recover account")
 114                 }
 115
 116                 // Clean up expired UTXO reservations periodically.
 117                 go accounts.ExpireReservations(ctx, expireReservationsPeriod)
 118         }
 119         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 120
 121         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 122
 123         // run the profile server
 124         profileHost := config.ProfListenAddress
 125         if profileHost != "" {
 126                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 127                 // go tool pprof http://profileHose/debug/pprof/heap
 128                 go func() {
 129                         http.ListenAndServe(profileHost, nil)
 130                 }()
 131         }
 132
 133         node := &Node{
 134                 config:       config,
 135                 syncManager:  syncManager,
 136                 evsw:         eventSwitch,
 137                 accessTokens: accessTokens,
 138                 wallet:       wallet,
 139                 chain:        chain,
 140                 txfeed:       txFeed,
 141                 miningEnable: config.Mining,
 142         }
 143
 144         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 145         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 146
 147         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 148
 149         return node
 150 }
 151
 152 func initOrRecoverAccount(hsm *pseudohsm.HSM, wallet *w.Wallet) error {
 153         xpubs := hsm.ListKeys()
 154
 155         if len(xpubs) == 0 {
 156                 xpub, err := hsm.XCreate("default", "123456")
 157                 if err != nil {
 158                         return err
 159                 }
 160
 161                 wallet.AccountMgr.Create(nil, []chainkd.XPub{xpub.XPub}, 1, "default")
 162                 return nil
 163         }
 164
 165         if _, err := wallet.AccountMgr.ListAccounts(""); err != nil {
 166                 return err
 167         }
 168
 169         return nil
 170 }
 171
 172 // Lanch web broser or not
 173 func lanchWebBroser() {
 174         log.Info("Launching System Browser with :", webAddress)
 175         if err := browser.Open(webAddress); err != nil {
 176                 log.Error(err.Error())
 177                 return
 178         }
 179 }
 180
 181 func (n *Node) initAndstartApiServer() {
 182         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 183
 184         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 185         env.Parse()
 186         n.api.StartServer(*listenAddr)
 187 }
 188
 189 func (n *Node) OnStart() error {
 190         if n.miningEnable {
 191                 n.cpuMiner.Start()
 192         }
 193         n.syncManager.Start()
 194         n.initAndstartApiServer()
 195         if !n.config.Web.Closed {
 196                 lanchWebBroser()
 197         }
 198
 199         return nil
 200 }
 201
 202 func (n *Node) OnStop() {
 203         n.BaseService.OnStop()
 204         if n.miningEnable {
 205                 n.cpuMiner.Stop()
 206         }
 207         n.syncManager.Stop()
 208         log.Info("Stopping Node")
 209         // TODO: gracefully disconnect from peers.
 210 }
 211
 212 func (n *Node) RunForever() {
 213         // Sleep forever and then...
 214         cmn.TrapSignal(func() {
 215                 n.Stop()
 216         })
 217 }
 218
 219 func (n *Node) EventSwitch() types.EventSwitch {
 220         return n.evsw
 221 }
 222
 223 func (n *Node) SyncManager() *netsync.SyncManager {
 224         return n.syncManager
 225 }
 226
 227 func (n *Node) MiningPool() *miningpool.MiningPool {
 228         return n.miningPool
 229 }