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
  11         "github.com/prometheus/prometheus/util/flock"
  12         log "github.com/sirupsen/logrus"
  13         cmn "github.com/tendermint/tmlibs/common"
  14         dbm "github.com/tendermint/tmlibs/db"
  15         browser "github.com/toqueteos/webbrowser"
  16
  17         "github.com/bytom/accesstoken"
  18         "github.com/bytom/account"
  19         "github.com/bytom/api"
  20         "github.com/bytom/asset"
  21         "github.com/bytom/blockchain/pseudohsm"
  22         "github.com/bytom/blockchain/txfeed"
  23         cfg "github.com/bytom/config"
  24         "github.com/bytom/consensus"
  25         "github.com/bytom/database/leveldb"
  26         "github.com/bytom/env"
  27         "github.com/bytom/mining/cpuminer"
  28         "github.com/bytom/mining/miningpool"
  29         "github.com/bytom/netsync"
  30         "github.com/bytom/protocol"
  31         "github.com/bytom/protocol/bc"
  32         "github.com/bytom/types"
  33         w "github.com/bytom/wallet"
  34 )
  35
  36 const (
  37         webAddress        = "http://127.0.0.1:9888"
  38         maxNewBlockChSize = 1024
  39 )
  40
  41 type Node struct {
  42         cmn.BaseService
  43
  44         // config
  45         config *cfg.Config
  46
  47         syncManager *netsync.SyncManager
  48
  49         evsw types.EventSwitch // pub/sub for services
  50         //bcReactor    *bc.BlockchainReactor
  51         wallet       *w.Wallet
  52         accessTokens *accesstoken.CredentialStore
  53         api          *api.API
  54         chain        *protocol.Chain
  55         txfeed       *txfeed.Tracker
  56         cpuMiner     *cpuminer.CPUMiner
  57         miningPool   *miningpool.MiningPool
  58         miningEnable bool
  59 }
  60
  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         // Get store
  69         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  70         store := leveldb.NewStore(coreDB)
  71
  72         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  73         accessTokens := accesstoken.NewStore(tokenDB)
  74
  75         // Make event switch
  76         eventSwitch := types.NewEventSwitch()
  77         if _, err := eventSwitch.Start(); err != nil {
  78                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  79         }
  80
  81         txPool := protocol.NewTxPool()
  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 = nil
  88         var assets *asset.Registry = nil
  89         var wallet *w.Wallet = nil
  90         var txFeed *txfeed.Tracker = nil
  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.WithField("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)
 110                 if err != nil {
 111                         log.WithField("error", err).Error("init NewWallet")
 112                 }
 113
 114                 // trigger rescan wallet
 115                 if config.Wallet.Rescan {
 116                         wallet.RescanBlocks()
 117                 }
 118         }
 119         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 120
 121         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 122
 123         // get transaction from txPool and send it to syncManager and wallet
 124         go newPoolTxListener(txPool, syncManager, wallet)
 125
 126         // run the profile server
 127         profileHost := config.ProfListenAddress
 128         if profileHost != "" {
 129                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 130                 // go tool pprof http://profileHose/debug/pprof/heap
 131                 go func() {
 132                         http.ListenAndServe(profileHost, nil)
 133                 }()
 134         }
 135
 136         node := &Node{
 137                 config:       config,
 138                 syncManager:  syncManager,
 139                 evsw:         eventSwitch,
 140                 accessTokens: accessTokens,
 141                 wallet:       wallet,
 142                 chain:        chain,
 143                 txfeed:       txFeed,
 144                 miningEnable: config.Mining,
 145         }
 146
 147         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 148         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 149
 150         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 151
 152         return node
 153 }
 154
 155 // newPoolTxListener listener transaction from txPool, and send it to syncManager and wallet
 156 func newPoolTxListener(txPool *protocol.TxPool, syncManager *netsync.SyncManager, wallet *w.Wallet) {
 157         txMsgCh := txPool.GetMsgCh()
 158         syncManagerTxCh := syncManager.GetNewTxCh()
 159
 160         for {
 161                 msg := <-txMsgCh
 162                 switch msg.MsgType {
 163                 case protocol.MsgNewTx:
 164                         syncManagerTxCh <- msg.Tx
 165                         if wallet != nil {
 166                                 wallet.AddUnconfirmedTx(msg.TxDesc)
 167                         }
 168                 case protocol.MsgRemoveTx:
 169                         if wallet != nil {
 170                                 wallet.RemoveUnconfirmedTx(msg.TxDesc)
 171                         }
 172                 default:
 173                         log.Warn("got unknow message type from the txPool channel")
 174                 }
 175         }
 176 }
 177
 178 // Lock data directory after daemonization
 179 func lockDataDirectory(config *cfg.Config) error {
 180         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 181         if err != nil {
 182                 return errors.New("datadir already used by another process")
 183         }
 184         return nil
 185 }
 186
 187 func initActiveNetParams(config *cfg.Config) {
 188         var exist bool
 189         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 190         if !exist {
 191                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 192         }
 193 }
 194
 195 func initLogFile(config *cfg.Config) {
 196         if config.LogFile == "" {
 197                 return
 198         }
 199         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 200         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 201         if err == nil {
 202                 log.SetOutput(file)
 203         } else {
 204                 log.WithField("err", err).Info("using default")
 205         }
 206
 207 }
 208
 209 // Lanch web broser or not
 210 func launchWebBrowser() {
 211         log.Info("Launching System Browser with :", webAddress)
 212         if err := browser.Open(webAddress); err != nil {
 213                 log.Error(err.Error())
 214                 return
 215         }
 216 }
 217
 218 func (n *Node) initAndstartApiServer() {
 219         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 220
 221         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 222         env.Parse()
 223         n.api.StartServer(*listenAddr)
 224 }
 225
 226 func (n *Node) OnStart() error {
 227         if n.miningEnable {
 228                 n.cpuMiner.Start()
 229         }
 230         if !n.config.VaultMode {
 231                 n.syncManager.Start()
 232         }
 233         n.initAndstartApiServer()
 234         if !n.config.Web.Closed {
 235                 launchWebBrowser()
 236         }
 237         return nil
 238 }
 239
 240 func (n *Node) OnStop() {
 241         n.BaseService.OnStop()
 242         if n.miningEnable {
 243                 n.cpuMiner.Stop()
 244         }
 245         if !n.config.VaultMode {
 246                 n.syncManager.Stop()
 247         }
 248 }
 249
 250 func (n *Node) RunForever() {
 251         // Sleep forever and then...
 252         cmn.TrapSignal(func() {
 253                 n.Stop()
 254         })
 255 }
 256
 257 func (n *Node) EventSwitch() types.EventSwitch {
 258         return n.evsw
 259 }
 260
 261 func (n *Node) SyncManager() *netsync.SyncManager {
 262         return n.syncManager
 263 }
 264
 265 func (n *Node) MiningPool() *miningpool.MiningPool {
 266         return n.miningPool
 267 }