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         coreDB := dbm.NewDB("core", config.DBBackend, config.DBDir())
  64         store := leveldb.NewStore(coreDB)
  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         if _, err := eventSwitch.Start(); err != nil {
  72                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
  73         }
  74
  75         txPool := protocol.NewTxPool()
  76         chain, err := protocol.NewChain(store, txPool)
  77         if err != nil {
  78                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
  79         }
  80
  81         var accounts *account.Manager = nil
  82         var assets *asset.Registry = nil
  83         var wallet *w.Wallet = nil
  84         var txFeed *txfeed.Tracker = nil
  85
  86         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
  87         txFeed = txfeed.NewTracker(txFeedDB, chain)
  88
  89         if err = txFeed.Prepare(ctx); err != nil {
  90                 log.WithField("error", err).Error("start txfeed")
  91                 return nil
  92         }
  93
  94         hsm, err := pseudohsm.New(config.KeysDir())
  95         if err != nil {
  96                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
  97         }
  98
  99         if !config.Wallet.Disable {
 100                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 101                 accounts = account.NewManager(walletDB, chain)
 102                 assets = asset.NewRegistry(walletDB, chain)
 103                 wallet, err = w.NewWallet(walletDB, accounts, assets, hsm, chain)
 104                 if err != nil {
 105                         log.WithField("error", err).Error("init NewWallet")
 106                 }
 107
 108                 // Clean up expired UTXO reservations periodically.
 109                 go accounts.ExpireReservations(ctx, expireReservationsPeriod)
 110         }
 111         newBlockCh := make(chan *bc.Hash, maxNewBlockChSize)
 112
 113         syncManager, _ := netsync.NewSyncManager(config, chain, txPool, newBlockCh)
 114
 115         // run the profile server
 116         profileHost := config.ProfListenAddress
 117         if profileHost != "" {
 118                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 119                 // go tool pprof http://profileHose/debug/pprof/heap
 120                 go func() {
 121                         http.ListenAndServe(profileHost, nil)
 122                 }()
 123         }
 124
 125         node := &Node{
 126                 config:       config,
 127                 syncManager:  syncManager,
 128                 evsw:         eventSwitch,
 129                 accessTokens: accessTokens,
 130                 wallet:       wallet,
 131                 chain:        chain,
 132                 txfeed:       txFeed,
 133                 miningEnable: config.Mining,
 134         }
 135
 136         node.cpuMiner = cpuminer.NewCPUMiner(chain, accounts, txPool, newBlockCh)
 137         node.miningPool = miningpool.NewMiningPool(chain, accounts, txPool, newBlockCh)
 138
 139         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 140
 141         return node
 142 }
 143
 144 func initActiveNetParams(config *cfg.Config) {
 145         var exist bool
 146         consensus.ActiveNetParams, exist = consensus.NetParams[config.ChainID]
 147         if !exist {
 148                 cmn.Exit(cmn.Fmt("chain_id[%v] don't exist", config.ChainID))
 149         }
 150 }
 151
 152 // Launch web browser or not
 153 func launchWebBrowser() {
 154         log.Info("Launching System Browser with :", webAddress)
 155         if err := browser.Open(webAddress); err != nil {
 156                 log.Error(err.Error())
 157                 return
 158         }
 159 }
 160
 161 func (n *Node) initAndstartApiServer() {
 162         n.api = api.NewAPI(n.syncManager, n.wallet, n.txfeed, n.cpuMiner, n.miningPool, n.chain, n.config, n.accessTokens)
 163
 164         listenAddr := env.String("LISTEN", n.config.ApiAddress)
 165         env.Parse()
 166         n.api.StartServer(*listenAddr)
 167 }
 168
 169 func (n *Node) OnStart() error {
 170         if n.miningEnable {
 171                 n.cpuMiner.Start()
 172         }
 173         n.syncManager.Start()
 174         n.initAndstartApiServer()
 175         if !n.config.Web.Closed {
 176                 launchWebBrowser()
 177         }
 178
 179         return nil
 180 }
 181
 182 func (n *Node) OnStop() {
 183         n.BaseService.OnStop()
 184         if n.miningEnable {
 185                 n.cpuMiner.Stop()
 186         }
 187         n.syncManager.Stop()
 188         log.Info("Stopping Node")
 189         // TODO: gracefully disconnect from peers.
 190 }
 191
 192 func (n *Node) RunForever() {
 193         // Sleep forever and then...
 194         cmn.TrapSignal(func() {
 195                 n.Stop()
 196         })
 197 }
 198
 199 func (n *Node) EventSwitch() types.EventSwitch {
 200         return n.evsw
 201 }
 202
 203 func (n *Node) SyncManager() *netsync.SyncManager {
 204         return n.syncManager
 205 }
 206
 207 func (n *Node) MiningPool() *miningpool.MiningPool {
 208         return n.miningPool
 209 }