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