node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "errors"
   6         "net/http"
   7         _ "net/http/pprof"
   8         "os"
   9         "path"
  10         "path/filepath"
  11         "time"
  12
  13         "github.com/prometheus/prometheus/util/flock"
  14         log "github.com/sirupsen/logrus"
  15         cmn "github.com/tendermint/tmlibs/common"
  16         dbm "github.com/tendermint/tmlibs/db"
  17         browser "github.com/toqueteos/webbrowser"
  18
  19         "github.com/bytom/accesstoken"
  20         "github.com/bytom/account"
  21         "github.com/bytom/api"
  22         "github.com/bytom/asset"
  23         "github.com/bytom/blockchain/pseudohsm"
  24         "github.com/bytom/blockchain/txfeed"
  25         cfg "github.com/bytom/config"
  26         "github.com/bytom/consensus"
  27         "github.com/bytom/database/leveldb"
  28         "github.com/bytom/env"
  29         "github.com/bytom/mining/cpuminer"
  30         "github.com/bytom/mining/miningpool"
  31         "github.com/bytom/netsync"
  32         "github.com/bytom/protocol"
  33         "github.com/bytom/protocol/bc"
  34         "github.com/bytom/types"
  35         w "github.com/bytom/wallet"
  36 )
  37
  38 const (
  39         webAddress               = "http://127.0.0.1:9888"
  40         expireReservationsPeriod = time.Second
  41         maxNewBlockChSize        = 1024
  42 )
  43
  44 type Node struct {
  45         cmn.BaseService
  46
  47         // config
  48         config *cfg.Config
  49
  50         syncManager *netsync.SyncManager
  51
  52         evsw types.EventSwitch // pub/sub for services
  53         //bcReactor    *bc.BlockchainReactor
  54         wallet       *w.Wallet
  55         accessTokens *accesstoken.CredentialStore
  56         api          *api.API
  57         chain        *protocol.Chain
  58         txfeed       *txfeed.Tracker
  59         cpuMiner     *cpuminer.CPUMiner
  60         miningPool   *miningpool.MiningPool
  61         miningEnable bool
  62 }
  63
  64 func NewNode(config *cfg.Config) *Node {
  65         ctx := context.Background()
  66         if err := lockDataDirectory(config); err != nil {
  67                 cmn.Exit("Error: " + err.Error())
  68         }
  69         initLogFile(config)
  70         initActiveNetParams(config)
  71         // Get store
  72         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  73         store := leveldb.NewStore(coreDB)
  74
  75         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
  76         accessTokens := accesstoken.NewStore(tokenDB)
  77
  78         // Make event switch
  79         eventSwitch := types.NewEventSwitch()
  80         if _, err := eventSwitch.Start(); err != nil {
  81                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  82         }
  83
  84         txPool := protocol.NewTxPool()
  85         chain, err := protocol.NewChain(store, txPool)
  86         if err != nil {
  87                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  88         }
  89
  90         var accounts *account.Manager = nil
  91         var assets *asset.Registry = nil
  92         var wallet *w.Wallet = nil
  93         var txFeed *txfeed.Tracker = nil
  94
  95         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  96         txFeed = txfeed.NewTracker(txFeedDB, chain)
  97
  98         if err = txFeed.Prepare(ctx); err != nil {
  99                 log.WithField("error", err).Error("start txfeed")
 100                 return nil
 101         }
 102
 103         hsm, err := pseudohsm.New(config.KeysDir())
 104         if err != nil {
 105                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 106         }
 107
 108         if !config.Wallet.Disable {
 109                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 110                 accounts = account.NewManager(walletDB, chain)
 111                 assets = asset.NewRegistry(walletDB, chain)
 112                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain)
 113                 if err != nil {
 114                         log.WithField("error", err).Error("init NewWallet")
 115                 }
 116
 117                 // trigger rescan wallet
 118                 if config.Wallet.Rescan {
 119                         wallet.RescanBlocks()
 120                 }
 121
 122                 // Clean up expired UTXO reservations periodically.
 123                 go accounts.ExpireReservations(ctx, expireReservationsPeriod)
 124         }
 125         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 126
 127         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 128
 129         // run the profile server
 130         profileHost := config.ProfListenAddress
 131         if profileHost != "" {
 132                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 133                 // go tool pprof http://profileHose/debug/pprof/heap
 134                 go func() {
 135                         http.ListenAndServe(profileHost, nil)
 136                 }()
 137         }
 138
 139         node := &Node{
 140                 config:       config,
 141                 syncManager:  syncManager,
 142                 evsw:         eventSwitch,
 143                 accessTokens: accessTokens,
 144                 wallet:       wallet,
 145                 chain:        chain,
 146                 txfeed:       txFeed,
 147                 miningEnable: config.Mining,
 148         }
 149
 150         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 151         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 152
 153         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 154
 155         return node
 156 }
 157
 158 // Lock data directory after daemonization
 159 func lockDataDirectory(config *cfg.Config) error {
 160         _, _, err := flock.New(filepath.Join(config.RootDir, "LOCK"))
 161         if err != nil {
 162                 return errors.New("datadir already used by another process")
 163         }
 164         return nil
 165 }
 166
 167 func initActiveNetParams(config *cfg.Config) {
 168         var exist bool
 169         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 170         if !exist {
 171                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 172         }
 173 }
 174
 175 func initLogFile(config *cfg.Config) {
 176         logFilePath := filepath.Join(config.RootDir, "log")
 177         cmn.EnsureDir(logFilePath, 0700)
 178         logFileName := path.Join(logFilePath, config.LogName)
 179         file, err := os.OpenFile(logFileName, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
 180         if err == nil {
 181                 log.SetOutput(file)
 182         } else {
 183                 log.Info("Failed to open log file, using default")
 184         }
 185 }
 186
 187 // Lanch web broser or not
 188 func launchWebBrowser() {
 189         log.Info("Launching System Browser with :", webAddress)
 190         if err := browser.Open(webAddress); err != nil {
 191                 log.Error(err.Error())
 192                 return
 193         }
 194 }
 195
 196 func (n *Node) initAndstartApiServer() {
 197         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 198
 199         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 200         env.Parse()
 201         n.api.StartServer(*listenAddr)
 202 }
 203
 204 func (n *Node) OnStart() error {
 205         if n.miningEnable {
 206                 n.cpuMiner.Start()
 207         }
 208         if !n.config.VaultMode {
 209                 n.syncManager.Start()
 210         }
 211         n.initAndstartApiServer()
 212         if !n.config.Web.Closed {
 213                 launchWebBrowser()
 214         }
 215
 216         return nil
 217 }
 218
 219 func (n *Node) OnStop() {
 220         n.BaseService.OnStop()
 221         if n.miningEnable {
 222                 n.cpuMiner.Stop()
 223         }
 224         if !n.config.VaultMode {
 225                 n.syncManager.Stop()
 226         }
 227 }
 228
 229 func (n *Node) RunForever() {
 230         // Sleep forever and then...
 231         cmn.TrapSignal(func() {
 232                 n.Stop()
 233         })
 234 }
 235
 236 func (n *Node) EventSwitch() types.EventSwitch {
 237         return n.evsw
 238 }
 239
 240 func (n *Node) SyncManager() *netsync.SyncManager {
 241         return n.syncManager
 242 }
 243
 244 func (n *Node) MiningPool() *miningpool.MiningPool {
 245         return n.miningPool
 246 }