node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "encoding/json"
   6         "errors"
   7         "net"
   8         "net/http"
   9         _ "net/http/pprof"
  10         "os"
  11         "path/filepath"
  12         "strings"
  13         "time"
  14
  15         "github.com/prometheus/prometheus/util/flock"
  16         log "github.com/sirupsen/logrus"
  17         cmn "github.com/tendermint/tmlibs/common"
  18         dbm "github.com/tendermint/tmlibs/db"
  19         browser "github.com/toqueteos/webbrowser"
  20
  21         "github.com/vapor/accesstoken"
  22         "github.com/vapor/account"
  23         "github.com/vapor/api"
  24         "github.com/vapor/asset"
  25         "github.com/vapor/blockchain/pseudohsm"
  26         "github.com/vapor/blockchain/txfeed"
  27         cfg "github.com/vapor/config"
  28         "github.com/vapor/consensus"
  29         "github.com/vapor/crypto/ed25519/chainkd"
  30         "github.com/vapor/database/leveldb"
  31         "github.com/vapor/env"
  32         "github.com/vapor/mining/cpuminer"
  33         "github.com/vapor/mining/miningpool"
  34         "github.com/vapor/net/websocket"
  35         "github.com/vapor/netsync"
  36         "github.com/vapor/protocol"
  37         "github.com/vapor/protocol/bc"
  38         "github.com/vapor/util"
  39         w "github.com/vapor/wallet"
  40 )
  41
  42 const (
  43         webHost           = "http://127.0.0.1"
  44         maxNewBlockChSize = 1024
  45 )
  46
  47 type Node struct {
  48         cmn.BaseService
  49
  50         // config
  51         config *cfg.Config
  52
  53         syncManager *netsync.SyncManager
  54
  55         //bcReactor    *bc.BlockchainReactor
  56         wallet          *w.Wallet
  57         accessTokens    *accesstoken.CredentialStore
  58         notificationMgr *websocket.WSNotificationManager
  59         api             *api.API
  60         chain           *protocol.Chain
  61         txfeed          *txfeed.Tracker
  62         cpuMiner        *cpuminer.CPUMiner
  63         miningPool      *miningpool.MiningPool
  64         miningEnable    bool
  65
  66         newBlockCh chan *bc.Hash
  67 }
  68
  69 func NewNode(config *cfg.Config) *Node {
  70         ctx := context.Background()
  71         if err := lockDataDirectory(config); err != nil {
  72                 cmn.Exit("Error: " + err.Error())
  73         }
  74         initLogFile(config)
  75         initActiveNetParams(config)
  76         initCommonConfig(config)
  77         util.MainchainConfig = config.MainChain
  78         util.ValidatePegin = config.ValidatePegin
  79         // Get store
  80         if config.DBBackend != "memdb" && config.DBBackend != "leveldb" {
  81                 cmn.Exit(cmn.Fmt("Param db_backend [%v] is invalid, use leveldb or memdb", config.DBBackend))
  82         }
  83         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  84         store := leveldb.NewStore(coreDB)
  85
  86         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  87         accessTokens := accesstoken.NewStore(tokenDB)
  88
  89         txPool := protocol.NewTxPool(store)
  90         chain, err := protocol.NewChain(store, txPool)
  91         if err != nil {
  92                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  93         }
  94
  95         var accounts *account.Manager = nil
  96         var assets *asset.Registry = nil
  97         var wallet *w.Wallet = nil
  98         var txFeed *txfeed.Tracker = nil
  99
 100         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 101         txFeed = txfeed.NewTracker(txFeedDB, chain)
 102
 103         if err = txFeed.Prepare(ctx); err != nil {
 104                 log.WithField("error", err).Error("start txfeed")
 105                 return nil
 106         }
 107
 108         hsm, err := pseudohsm.New(config.KeysDir())
 109         if err != nil {
 110                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 111         }
 112
 113         if !config.Wallet.Disable {
 114                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 115                 accounts = account.NewManager(walletDB, chain)
 116                 assets = asset.NewRegistry(walletDB, chain)
 117                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain)
 118                 if err != nil {
 119                         log.WithField("error", err).Error("init NewWallet")
 120                 }
 121
 122                 // trigger rescan wallet
 123                 if config.Wallet.Rescan {
 124                         wallet.RescanBlocks()
 125                 }
 126         }
 127         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 128
 129         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 130
 131         notificationMgr := websocket.NewWsNotificationManager(config.Websocket.MaxNumWebsockets, config.Websocket.MaxNumConcurrentReqs, chain)
 132
 133         // get transaction from txPool and send it to syncManager and wallet
 134         go newPoolTxListener(txPool, syncManager, wallet, notificationMgr)
 135
 136         // run the profile server
 137         profileHost := config.ProfListenAddress
 138         if profileHost != "" {
 139                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 140                 // go tool pprof http://profileHose/debug/pprof/heap
 141                 go func() {
 142                         if err = http.ListenAndServe(profileHost, nil); err != nil {
 143                                 cmn.Exit(cmn.Fmt("Failed to register tcp profileHost: %v", err))
 144                         }
 145                 }()
 146         }
 147
 148         node := &Node{
 149                 config:       config,
 150                 syncManager:  syncManager,
 151                 accessTokens: accessTokens,
 152                 wallet:       wallet,
 153                 chain:        chain,
 154                 txfeed:       txFeed,
 155                 miningEnable: config.Mining,
 156
 157                 newBlockCh:      newBlockCh,
 158                 notificationMgr: notificationMgr,
 159         }
 160
 161         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 162         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 163
 164         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 165
 166         return node
 167 }
 168
 169 // newPoolTxListener listener transaction from txPool, and send it to syncManager and wallet
 170 func newPoolTxListener(txPool *protocol.TxPool, syncManager *netsync.SyncManager, wallet *w.Wallet, notificationMgr *websocket.WSNotificationManager) {
 171         txMsgCh := txPool.GetMsgCh()
 172         syncManagerTxCh := syncManager.GetNewTxCh()
 173
 174         for {
 175                 msg := <-txMsgCh
 176                 switch msg.MsgType {
 177                 case protocol.MsgNewTx:
 178                         syncManagerTxCh <- msg.Tx
 179                         if wallet != nil {
 180                                 wallet.AddUnconfirmedTx(msg.TxDesc)
 181                         }
 182                         notificationMgr.NotifyMempoolTx(msg.Tx)
 183                 case protocol.MsgRemoveTx:
 184                         if wallet != nil {
 185                                 wallet.RemoveUnconfirmedTx(msg.TxDesc)
 186                         }
 187                 default:
 188                         log.Warn("got unknow message type from the txPool channel")
 189                 }
 190         }
 191 }
 192
 193 // Lock data directory after daemonization
 194 func lockDataDirectory(config *cfg.Config) error {
 195         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 196         if err != nil {
 197                 return errors.New("datadir already used by another process")
 198         }
 199         return nil
 200 }
 201
 202 func initActiveNetParams(config *cfg.Config) {
 203         var exist bool
 204         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 205         if !exist {
 206                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 207         }
 208         var federationRedeemXPubs []chainkd.XPub
 209         if fedpegXPubs := strings.Split(config.Side.FedpegXPubs, ","); len(fedpegXPubs) > 0 {
 210                 for _, xpubStr := range fedpegXPubs {
 211                         var xpub chainkd.XPub
 212                         xpub.UnmarshalText([]byte(xpubStr))
 213                         federationRedeemXPubs = append(federationRedeemXPubs, xpub)
 214                 }
 215         }
 216
 217         var signBlockXPubs []chainkd.XPub
 218         if xPubs := strings.Split(config.Side.SignBlockXPubs, ","); len(xPubs) > 0 {
 219                 for _, xpubStr := range xPubs {
 220                         var xpub chainkd.XPub
 221                         xpub.UnmarshalText([]byte(xpubStr))
 222                         signBlockXPubs = append(signBlockXPubs, xpub)
 223                 }
 224         }
 225
 226         consensus.ActiveNetParams.Signer = config.Signer
 227         consensus.ActiveNetParams.FedpegXPubs = federationRedeemXPubs
 228         consensus.ActiveNetParams.SignBlockXPubs = signBlockXPubs
 229         consensus.ActiveNetParams.PeginMinDepth = config.Side.PeginMinDepth
 230         consensus.ActiveNetParams.ParentGenesisBlockHash = config.Side.ParentGenesisBlockHash
 231 }
 232
 233 func initLogFile(config *cfg.Config) {
 234         if config.LogFile == "" {
 235                 return
 236         }
 237         cmn.EnsureDir(filepath.Dir(config.LogFile), 0700)
 238         file, err := os.OpenFile(config.LogFile, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 239         if err == nil {
 240                 log.SetOutput(file)
 241         } else {
 242                 log.WithField("err", err).Info("using default")
 243         }
 244
 245 }
 246
 247 func initCommonConfig(config *cfg.Config) {
 248         cfg.CommonConfig = config
 249 }
 250
 251 // Lanch web broser or not
 252 func launchWebBrowser(port string) {
 253         webAddress := webHost + ":" + port
 254         log.Info("Launching System Browser with :", webAddress)
 255         if err := browser.Open(webAddress); err != nil {
 256                 log.Error(err.Error())
 257                 return
 258         }
 259 }
 260
 261 func (n *Node) initAndstartApiServer() {
 262         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens, n.newBlockCh, n.notificationMgr)
 263
 264         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 265         env.Parse()
 266         n.api.StartServer(*listenAddr)
 267 }
 268
 269 func (n *Node) OnStart() error {
 270         if n.miningEnable {
 271                 if _, err := n.wallet.AccountMgr.GetMiningAddress(); err != nil {
 272                         n.miningEnable = false
 273                         log.Error(err)
 274                 } else {
 275                         n.cpuMiner.Start()
 276                 }
 277         }
 278         if !n.config.VaultMode {
 279                 n.syncManager.Start()
 280         }
 281         n.initAndstartApiServer()
 282         n.notificationMgr.Start()
 283         if !n.config.Web.Closed {
 284                 _, port, err := net.SplitHostPort(n.config.ApiAddress)
 285                 if err != nil {
 286                         log.Error("Invalid api address")
 287                         return err
 288                 }
 289                 launchWebBrowser(port)
 290         }
 291         go bytomdRPCCheck()
 292         return nil
 293 }
 294
 295 func (n *Node) OnStop() {
 296         n.notificationMgr.Shutdown()
 297         n.notificationMgr.WaitForShutdown()
 298         n.BaseService.OnStop()
 299         if n.miningEnable {
 300                 n.cpuMiner.Stop()
 301         }
 302         if !n.config.VaultMode {
 303                 n.syncManager.Stop()
 304         }
 305 }
 306
 307 func (n *Node) RunForever() {
 308         // Sleep forever and then...
 309         cmn.TrapSignal(func() {
 310                 n.Stop()
 311         })
 312 }
 313
 314 func (n *Node) SyncManager() *netsync.SyncManager {
 315         return n.syncManager
 316 }
 317
 318 func (n *Node) MiningPool() *miningpool.MiningPool {
 319         return n.miningPool
 320 }
 321
 322 /**bytomdRPCCheck Check if bytomd connection via RPC is correctly working*/
 323 func bytomdRPCCheck() bool {
 324         type Req struct {
 325                 BlockHeight uint64 `json:"block_height"`
 326         }
 327         if util.ValidatePegin {
 328                 for {
 329                         resp, err := util.CallRPC("/get-block-header", &Req{BlockHeight: 0})
 330                         if err != nil {
 331                                 log.Error("Call mainchain interface get-block-header failed")
 332                                 time.Sleep(time.Millisecond * 1000)
 333                                 continue
 334                         }
 335                         tmp, _ := json.Marshal(resp)
 336                         var blockHeader api.GetBlockHeaderResp
 337                         json.Unmarshal(tmp, &blockHeader)
 338                         hash := blockHeader.BlockHeader.Hash()
 339                         if strings.Compare(consensus.ActiveNetParams.ParentGenesisBlockHash, hash.String()) != 0 {
 340                                 log.Error("Invalid parent genesis block hash response via RPC. Contacting wrong parent daemon?")
 341                                 return false
 342                         }
 343                         break
 344                 }
 345         }
 346
 347         return true
 348 }