node/node.go

   1 package node
   2
   3 import (
   4         "context"
   5         "crypto/tls"
   6         "net"
   7         "net/http"
   8         _ "net/http/pprof"
   9         "strings"
  10         "sync"
  11         "time"
  12
  13         "github.com/kr/secureheader"
  14         log "github.com/sirupsen/logrus"
  15         crypto "github.com/tendermint/go-crypto"
  16         wire "github.com/tendermint/go-wire"
  17         cmn "github.com/tendermint/tmlibs/common"
  18         dbm "github.com/tendermint/tmlibs/db"
  19
  20         bc "github.com/bytom/blockchain"
  21         "github.com/bytom/blockchain/accesstoken"
  22         "github.com/bytom/blockchain/account"
  23         "github.com/bytom/blockchain/asset"
  24         "github.com/bytom/blockchain/pseudohsm"
  25         "github.com/bytom/blockchain/txdb"
  26         "github.com/bytom/blockchain/txfeed"
  27         w "github.com/bytom/blockchain/wallet"
  28         cfg "github.com/bytom/config"
  29         "github.com/bytom/env"
  30         "github.com/bytom/errors"
  31         "github.com/bytom/p2p"
  32         "github.com/bytom/protocol"
  33         "github.com/bytom/types"
  34         "github.com/bytom/util/browser"
  35         "github.com/bytom/version"
  36 )
  37
  38 const (
  39         httpReadTimeout  = 2 * time.Minute
  40         httpWriteTimeout = time.Hour
  41         webAddress       = "http://127.0.0.1:9888"
  42 )
  43
  44 type Node struct {
  45         cmn.BaseService
  46
  47         // config
  48         config *cfg.Config
  49
  50         // network
  51         privKey  crypto.PrivKeyEd25519 // local node's p2p key
  52         sw       *p2p.Switch           // p2p connections
  53         addrBook *p2p.AddrBook         // known peers
  54
  55         evsw       types.EventSwitch // pub/sub for services
  56         blockStore *txdb.Store
  57         bcReactor  *bc.BlockchainReactor
  58         accounts   *account.Manager
  59         assets     *asset.Registry
  60 }
  61
  62 func NewNodeDefault(config *cfg.Config) *Node {
  63         return NewNode(config)
  64 }
  65
  66 func RedirectHandler(next http.Handler) http.Handler {
  67         return http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
  68                 if req.URL.Path == "/" {
  69                         http.Redirect(w, req, "/dashboard/", http.StatusFound)
  70                         return
  71                 }
  72                 next.ServeHTTP(w, req)
  73         })
  74 }
  75
  76 type waitHandler struct {
  77         h  http.Handler
  78         wg sync.WaitGroup
  79 }
  80
  81 func (wh *waitHandler) Set(h http.Handler) {
  82         wh.h = h
  83         wh.wg.Done()
  84 }
  85
  86 func (wh *waitHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
  87         wh.wg.Wait()
  88         wh.h.ServeHTTP(w, req)
  89 }
  90
  91 func rpcInit(h *bc.BlockchainReactor, config *cfg.Config, accessTokens *accesstoken.CredentialStore) {
  92         // The waitHandler accepts incoming requests, but blocks until its underlying
  93         // handler is set, when the second phase is complete.
  94         var coreHandler waitHandler
  95         coreHandler.wg.Add(1)
  96         mux := http.NewServeMux()
  97         mux.Handle("/", &coreHandler)
  98
  99         var handler http.Handler = mux
 100
 101         if config.Auth.Disable == false {
 102                 handler = bc.AuthHandler(handler, accessTokens)
 103         }
 104         handler = RedirectHandler(handler)
 105
 106         secureheader.DefaultConfig.PermitClearLoopback = true
 107         secureheader.DefaultConfig.HTTPSRedirect = false
 108         secureheader.DefaultConfig.Next = handler
 109
 110         server := &http.Server{
 111                 // Note: we should not set TLSConfig here;
 112                 // we took care of TLS with the listener in maybeUseTLS.
 113                 Handler:      secureheader.DefaultConfig,
 114                 ReadTimeout:  httpReadTimeout,
 115                 WriteTimeout: httpWriteTimeout,
 116                 // Disable HTTP/2 for now until the Go implementation is more stable.
 117                 // https://github.com/golang/go/issues/16450
 118                 // https://github.com/golang/go/issues/17071
 119                 TLSNextProto: map[string]func(*http.Server, *tls.Conn, http.Handler){},
 120         }
 121         listenAddr := env.String("LISTEN", config.ApiAddress)
 122         listener, err := net.Listen("tcp", *listenAddr)
 123         if err != nil {
 124                 cmn.Exit(cmn.Fmt("Failed to register tcp port: %v", err))
 125         }
 126
 127         // The `Serve` call has to happen in its own goroutine because
 128         // it's blocking and we need to proceed to the rest of the core setup after
 129         // we call it.
 130         go func() {
 131                 if err := server.Serve(listener); err != nil {
 132                         log.WithField("error", errors.Wrap(err, "Serve")).Error("Rpc server")
 133                 }
 134         }()
 135         coreHandler.Set(h)
 136 }
 137
 138 func NewNode(config *cfg.Config) *Node {
 139         ctx := context.Background()
 140
 141         // Get store
 142         txDB := dbm.NewDB("txdb", config.DBBackend, config.DBDir())
 143         store := txdb.NewStore(txDB)
 144
 145         tokenDB := dbm.NewDB("accesstoken", config.DBBackend, config.DBDir())
 146         accessTokens := accesstoken.NewStore(tokenDB)
 147
 148         privKey := crypto.GenPrivKeyEd25519()
 149
 150         // Make event switch
 151         eventSwitch := types.NewEventSwitch()
 152         _, err := eventSwitch.Start()
 153         if err != nil {
 154                 cmn.Exit(cmn.Fmt("Failed to start switch: %v", err))
 155         }
 156
 157         sw := p2p.NewSwitch(config.P2P)
 158
 159         genesisBlock := cfg.GenerateGenesisBlock()
 160
 161         txPool := protocol.NewTxPool()
 162         chain, err := protocol.NewChain(genesisBlock.Hash(), store, txPool)
 163         if err != nil {
 164                 cmn.Exit(cmn.Fmt("Failed to create chain structure: %v", err))
 165         }
 166
 167         if chain.BestBlockHash() == nil {
 168                 if err := chain.SaveBlock(genesisBlock); err != nil {
 169                         cmn.Exit(cmn.Fmt("Failed to save genesisBlock to store: %v", err))
 170                 }
 171                 if err := chain.ConnectBlock(genesisBlock); err != nil {
 172                         cmn.Exit(cmn.Fmt("Failed to connect genesisBlock to chain: %v", err))
 173                 }
 174         }
 175
 176         var accounts *account.Manager = nil
 177         var assets *asset.Registry = nil
 178         var wallet *w.Wallet = nil
 179         var txFeed *txfeed.Tracker = nil
 180
 181         txFeedDB := dbm.NewDB("txfeeds", config.DBBackend, config.DBDir())
 182         txFeed = txfeed.NewTracker(txFeedDB, chain)
 183
 184         if err = txFeed.Prepare(ctx); err != nil {
 185                 log.WithField("error", err).Error("start txfeed")
 186                 return nil
 187         }
 188
 189         if !config.Wallet.Disable {
 190                 walletDB := dbm.NewDB("wallet", config.DBBackend, config.DBDir())
 191                 accounts = account.NewManager(walletDB, chain)
 192                 assets = asset.NewRegistry(walletDB, chain)
 193                 wallet, err = w.NewWallet(walletDB, accounts, assets, chain)
 194                 if err != nil {
 195                         log.WithField("error", err).Error("init NewWallet")
 196                 }
 197         }
 198
 199         hsm, err := pseudohsm.New(config.KeysDir())
 200         if err != nil {
 201                 cmn.Exit(cmn.Fmt("initialize HSM failed: %v", err))
 202         }
 203         bcReactor := bc.NewBlockchainReactor(chain, txPool, accounts, assets, sw, hsm, wallet, txFeed, accessTokens, config.Mining)
 204
 205         sw.AddReactor("BLOCKCHAIN", bcReactor)
 206
 207         rpcInit(bcReactor, config, accessTokens)
 208         // Optionally, start the pex reactor
 209         var addrBook *p2p.AddrBook
 210         if config.P2P.PexReactor {
 211                 addrBook = p2p.NewAddrBook(config.P2P.AddrBookFile(), config.P2P.AddrBookStrict)
 212                 pexReactor := p2p.NewPEXReactor(addrBook)
 213                 sw.AddReactor("PEX", pexReactor)
 214         }
 215
 216         // run the profile server
 217         profileHost := config.ProfListenAddress
 218         if profileHost != "" {
 219                 // Profiling bytomd programs.see (https://blog.golang.org/profiling-go-programs)
 220                 // go tool pprof http://profileHose/debug/pprof/heap
 221                 go func() {
 222                         http.ListenAndServe(profileHost, nil)
 223                 }()
 224         }
 225
 226         node := &Node{
 227                 config: config,
 228
 229                 privKey:  privKey,
 230                 sw:       sw,
 231                 addrBook: addrBook,
 232
 233                 evsw:       eventSwitch,
 234                 bcReactor:  bcReactor,
 235                 blockStore: store,
 236                 accounts:   accounts,
 237                 assets:     assets,
 238         }
 239         node.BaseService = *cmn.NewBaseService(nil, "Node", node)
 240
 241         return node
 242 }
 243
 244 // Lanch web broser or not
 245 func lanchWebBroser(lanch bool) {
 246         if lanch {
 247                 log.Info("Launching System Browser with :", webAddress)
 248                 if err := browser.Open(webAddress); err != nil {
 249                         log.Error(err.Error())
 250                         return
 251                 }
 252         }
 253 }
 254
 255 func (n *Node) OnStart() error {
 256         // Create & add listener
 257         p, address := ProtocolAndAddress(n.config.P2P.ListenAddress)
 258         l := p2p.NewDefaultListener(p, address, n.config.P2P.SkipUPNP, nil)
 259         n.sw.AddListener(l)
 260
 261         // Start the switch
 262         n.sw.SetNodeInfo(n.makeNodeInfo())
 263         n.sw.SetNodePrivKey(n.privKey)
 264         _, err := n.sw.Start()
 265         if err != nil {
 266                 return err
 267         }
 268
 269         // If seeds exist, add them to the address book and dial out
 270         if n.config.P2P.Seeds != "" {
 271                 // dial out
 272                 seeds := strings.Split(n.config.P2P.Seeds, ",")
 273                 if err := n.DialSeeds(seeds); err != nil {
 274                         return err
 275                 }
 276         }
 277         lanchWebBroser(!n.config.Web.Closed)
 278         return nil
 279 }
 280
 281 func (n *Node) OnStop() {
 282         n.BaseService.OnStop()
 283
 284         log.Info("Stopping Node")
 285         // TODO: gracefully disconnect from peers.
 286         n.sw.Stop()
 287
 288 }
 289
 290 func (n *Node) RunForever() {
 291         // Sleep forever and then...
 292         cmn.TrapSignal(func() {
 293                 n.Stop()
 294         })
 295 }
 296
 297 // Add a Listener to accept inbound peer connections.
 298 // Add listeners before starting the Node.
 299 // The first listener is the primary listener (in NodeInfo)
 300 func (n *Node) AddListener(l p2p.Listener) {
 301         n.sw.AddListener(l)
 302 }
 303
 304 func (n *Node) Switch() *p2p.Switch {
 305         return n.sw
 306 }
 307
 308 func (n *Node) EventSwitch() types.EventSwitch {
 309         return n.evsw
 310 }
 311
 312 func (n *Node) makeNodeInfo() *p2p.NodeInfo {
 313         nodeInfo := &p2p.NodeInfo{
 314                 PubKey:  n.privKey.PubKey().Unwrap().(crypto.PubKeyEd25519),
 315                 Moniker: n.config.Moniker,
 316                 Network: "bytom",
 317                 Version: version.Version,
 318                 Other: []string{
 319                         cmn.Fmt("wire_version=%v", wire.Version),
 320                         cmn.Fmt("p2p_version=%v", p2p.Version),
 321                 },
 322         }
 323
 324         if !n.sw.IsListening() {
 325                 return nodeInfo
 326         }
 327
 328         p2pListener := n.sw.Listeners()[0]
 329         p2pHost := p2pListener.ExternalAddress().IP.String()
 330         p2pPort := p2pListener.ExternalAddress().Port
 331         //rpcListenAddr := n.config.RPC.ListenAddress
 332
 333         // We assume that the rpcListener has the same ExternalAddress.
 334         // This is probably true because both P2P and RPC listeners use UPnP,
 335         // except of course if the rpc is only bound to localhost
 336         nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pHost, p2pPort)
 337         //nodeInfo.Other = append(nodeInfo.Other, cmn.Fmt("rpc_addr=%v", rpcListenAddr))
 338         return nodeInfo
 339 }
 340
 341 //------------------------------------------------------------------------------
 342
 343 func (n *Node) NodeInfo() *p2p.NodeInfo {
 344         return n.sw.NodeInfo()
 345 }
 346
 347 func (n *Node) DialSeeds(seeds []string) error {
 348         return n.sw.DialSeeds(n.addrBook, seeds)
 349 }
 350
 351 // Defaults to tcp
 352 func ProtocolAndAddress(listenAddr string) (string, string) {
 353         p, address := "tcp", listenAddr
 354         parts := strings.SplitN(address, "://", 2)
 355         if len(parts) == 2 {
 356                 p, address = parts[0], parts[1]
 357         }
 358         return p, address
 359 }
 360
 361 //------------------------------------------------------------------------------