node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "errors"
   6         "net/http"
   7         _ "net/http/pprof"
   8         "os"
   9         "path/filepath"
  10         "time"
  11
  12         "github.com/prometheus/prometheus/util/flock"
  13         log "github.com/sirupsen/logrus"
  14         cmn "github.com/tendermint/tmlibs/common"
  15         dbm "github.com/tendermint/tmlibs/db"
  16         browser "github.com/toqueteos/webbrowser"
  17
  18         "github.com/bytom/accesstoken"
  19         "github.com/bytom/account"
  20         "github.com/bytom/api"
  21         "github.com/bytom/asset"
  22         "github.com/bytom/blockchain/pseudohsm"
  23         "github.com/bytom/blockchain/txfeed"
  24         cfg "github.com/bytom/config"
  25         "github.com/bytom/consensus"
  26         "github.com/bytom/database/leveldb"
  27         "github.com/bytom/env"
  28         "github.com/bytom/mining/cpuminer"
  29         "github.com/bytom/mining/miningpool"
  30         "github.com/bytom/netsync"
  31         "github.com/bytom/protocol"
  32         "github.com/bytom/protocol/bc"
  33         "github.com/bytom/types"
  34         w "github.com/bytom/wallet"
  35 )
  36
  37 const (
  38         webAddress               = "http://127.0.0.1:9888"
  39         expireReservationsPeriod = time.Second
  40         maxNewBlockChSize        = 1024
  41 )
  42
  43 type Node struct {
  44         cmn.BaseService
  45
  46         // config
  47         config *cfg.Config
  48
  49         syncManager *netsync.SyncManager
  50
  51         evsw types.EventSwitch // pub/sub for services
  52         //bcReactor    *bc.BlockchainReactor
  53         wallet       *w.Wallet
  54         accessTokens *accesstoken.CredentialStore
  55         api          *api.API
  56         chain        *protocol.Chain
  57         txfeed       *txfeed.Tracker
  58         cpuMiner     *cpuminer.CPUMiner
  59         miningPool   *miningpool.MiningPool
  60         miningEnable bool
  61 }
  62
  63 func NewNode(config *cfg.Config) *Node {
  64         ctx := context.Background()
  65         if err := lockDataDirectory(config); err != nil {
  66                 cmn.Exit("Error: " + err.Error())
  67         }
  68         initLogFile(config)
  69         initActiveNetParams(config)
  70         // Get store
  71         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  72         store := leveldb.NewStore(coreDB)
  73
  74         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  75         accessTokens := accesstoken.NewStore(tokenDB)
  76
  77         // Make event switch
  78         eventSwitch := types.NewEventSwitch()
  79         if _, err := eventSwitch.Start(); err != nil {
  80                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  81         }
  82
  83         txPool := protocol.NewTxPool()
  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 = nil
  90         var assets *asset.Registry = nil
  91         var wallet *w.Wallet = nil
  92         var txFeed *txfeed.Tracker = nil
  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.WithField("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)
 112                 if err != nil {
 113                         log.WithField("error", err).Error("init NewWallet")
 114                 }
 115
 116                 // trigger rescan wallet
 117                 if config.Wallet.Rescan {
 118                         wallet.RescanBlocks()
 119                 }
 120
 121                 // Clean up expired UTXO reservations periodically.
 122                 go accounts.ExpireReservations(ctx, expireReservationsPeriod)
 123         }
 124         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 125
 126         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 127
 128         // run the profile server
 129         profileHost := config.ProfListenAddress
 130         if profileHost != "" {
 131                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 132                 // go tool pprof http://profileHose/debug/pprof/heap
 133                 go func() {
 134                         http.ListenAndServe(profileHost, nil)
 135                 }()
 136         }
 137
 138         node := &Node{
 139                 config:       config,
 140                 syncManager:  syncManager,
 141                 evsw:         eventSwitch,
 142                 accessTokens: accessTokens,
 143                 wallet:       wallet,
 144                 chain:        chain,
 145                 txfeed:       txFeed,
 146                 miningEnable: config.Mining,
 147         }
 148
 149         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 150         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 151
 152         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 153
 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.WithField("err", err).Info("using default")
 184         }
 185
 186 }
 187
 188 // Lanch web broser or not
 189 func launchWebBrowser() {
 190         log.Info("Launching System Browser with :", webAddress)
 191         if err := browser.Open(webAddress); err != nil {
 192                 log.Error(err.Error())
 193                 return
 194         }
 195 }
 196
 197 func (n *Node) initAndstartApiServer() {
 198         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 199
 200         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 201         env.Parse()
 202         n.api.StartServer(*listenAddr)
 203 }
 204
 205 func (n *Node) OnStart() error {
 206         if n.miningEnable {
 207                 n.cpuMiner.Start()
 208         }
 209         if !n.config.VaultMode {
 210                 n.syncManager.Start()
 211         }
 212         n.initAndstartApiServer()
 213         if !n.config.Web.Closed {
 214                 launchWebBrowser()
 215         }
 216
 217         return nil
 218 }
 219
 220 func (n *Node) OnStop() {
 221         n.BaseService.OnStop()
 222         if n.miningEnable {
 223                 n.cpuMiner.Stop()
 224         }
 225         if !n.config.VaultMode {
 226                 n.syncManager.Stop()
 227         }
 228 }
 229
 230 func (n *Node) RunForever() {
 231         // Sleep forever and then...
 232         cmn.TrapSignal(func() {
 233                 n.Stop()
 234         })
 235 }
 236
 237 func (n *Node) EventSwitch() types.EventSwitch {
 238         return n.evsw
 239 }
 240
 241 func (n *Node) SyncManager() *netsync.SyncManager {
 242         return n.syncManager
 243 }
 244
 245 func (n *Node) MiningPool() *miningpool.MiningPool {
 246         return n.miningPool
 247 }