package node import ( "bytes" "math/rand" "net" "net/http" "os" "strconv" "strings" "time" acm "github.com/tendermint/tendermint/account" bc "github.com/tendermint/tendermint/blockchain" . "github.com/tendermint/tendermint/common" "github.com/tendermint/tendermint/consensus" dbm "github.com/tendermint/tendermint/db" "github.com/tendermint/tendermint/events" mempl "github.com/tendermint/tendermint/mempool" "github.com/tendermint/tendermint/p2p" "github.com/tendermint/tendermint/rpc" "github.com/tendermint/tendermint/rpc/core" "github.com/tendermint/tendermint/rpc/server" sm "github.com/tendermint/tendermint/state" stypes "github.com/tendermint/tendermint/state/types" "github.com/tendermint/tendermint/types" "github.com/tendermint/tendermint/wire" ) import _ "net/http/pprof" type Node struct { sw *p2p.Switch evsw *events.EventSwitch book *p2p.AddrBook blockStore *bc.BlockStore pexReactor *p2p.PEXReactor bcReactor *bc.BlockchainReactor mempoolReactor *mempl.MempoolReactor consensusState *consensus.ConsensusState consensusReactor *consensus.ConsensusReactor privValidator *types.PrivValidator genDoc *stypes.GenesisDoc privKey acm.PrivKeyEd25519 } func NewNode() *Node { // Get BlockStore blockStoreDB := dbm.GetDB("blockstore") blockStore := bc.NewBlockStore(blockStoreDB) // Get State stateDB := dbm.GetDB("state") state := sm.LoadState(stateDB) var genDoc *stypes.GenesisDoc if state == nil { genDoc, state = sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file")) state.Save() // write the gendoc to db buf, n, err := new(bytes.Buffer), new(int64), new(error) wire.WriteJSON(genDoc, buf, n, err) stateDB.Set(stypes.GenDocKey, buf.Bytes()) if *err != nil { Exit(Fmt("Unable to write gendoc to db: %v", err)) } } else { genDocBytes := stateDB.Get(stypes.GenDocKey) err := new(error) wire.ReadJSONPtr(&genDoc, genDocBytes, err) if *err != nil { Exit(Fmt("Unable to read gendoc from db: %v", err)) } } // add the chainid to the global config config.Set("chain_id", state.ChainID) // Get PrivValidator var privValidator *types.PrivValidator privValidatorFile := config.GetString("priv_validator_file") if _, err := os.Stat(privValidatorFile); err == nil { privValidator = types.LoadPrivValidator(privValidatorFile) log.Notice("Loaded PrivValidator", "file", privValidatorFile, "privValidator", privValidator) } else { privValidator = types.GenPrivValidator() privValidator.SetFile(privValidatorFile) privValidator.Save() log.Notice("Generated PrivValidator", "file", privValidatorFile) } // Generate node PrivKey privKey := acm.GenPrivKeyEd25519() // Make event switch eventSwitch := events.NewEventSwitch() _, err := eventSwitch.Start() if err != nil { Exit(Fmt("Failed to start switch: %v", err)) } // Make PEXReactor book := p2p.NewAddrBook(config.GetString("addrbook_file")) pexReactor := p2p.NewPEXReactor(book) // Make BlockchainReactor bcReactor := bc.NewBlockchainReactor(state.Copy(), blockStore, config.GetBool("fast_sync")) // Make MempoolReactor mempool := mempl.NewMempool(state.Copy()) mempoolReactor := mempl.NewMempoolReactor(mempool) // Make ConsensusReactor consensusState := consensus.NewConsensusState(state.Copy(), blockStore, mempoolReactor) consensusReactor := consensus.NewConsensusReactor(consensusState, blockStore, config.GetBool("fast_sync")) if privValidator != nil { consensusReactor.SetPrivValidator(privValidator) } // Make p2p network switch sw := p2p.NewSwitch() sw.AddReactor("PEX", pexReactor) sw.AddReactor("MEMPOOL", mempoolReactor) sw.AddReactor("BLOCKCHAIN", bcReactor) sw.AddReactor("CONSENSUS", consensusReactor) // add the event switch to all services // they should all satisfy events.Eventable SetFireable(eventSwitch, pexReactor, bcReactor, mempoolReactor, consensusReactor) return &Node{ sw: sw, evsw: eventSwitch, book: book, blockStore: blockStore, pexReactor: pexReactor, bcReactor: bcReactor, mempoolReactor: mempoolReactor, consensusState: consensusState, consensusReactor: consensusReactor, privValidator: privValidator, genDoc: genDoc, privKey: privKey, } } // Call Start() after adding the listeners. func (n *Node) Start() error { n.book.Start() n.sw.SetNodeInfo(makeNodeInfo(n.sw, n.privKey)) n.sw.SetNodePrivKey(n.privKey) _, err := n.sw.Start() return err } func (n *Node) Stop() { log.Notice("Stopping Node") // TODO: gracefully disconnect from peers. n.sw.Stop() n.book.Stop() } // Add the event switch to reactors, mempool, etc. func SetFireable(evsw *events.EventSwitch, eventables ...events.Eventable) { for _, e := range eventables { e.SetFireable(evsw) } } // Add a Listener to accept inbound peer connections. // Add listeners before starting the Node. // The first listener is the primary listener (in NodeInfo) func (n *Node) AddListener(l p2p.Listener) { log.Notice(Fmt("Added %v", l)) n.sw.AddListener(l) n.book.AddOurAddress(l.ExternalAddress()) } // Dial a list of seeds in random order // Spawns a go routine for each dial func (n *Node) DialSeed() { // permute the list, dial them in random order. seeds := strings.Split(config.GetString("seeds"), ",") perm := rand.Perm(len(seeds)) for i := 0; i < len(perm); i++ { go func(i int) { time.Sleep(time.Duration(rand.Int63n(3000)) * time.Millisecond) j := perm[i] addr := p2p.NewNetAddressString(seeds[j]) n.dialSeed(addr) }(i) } } func (n *Node) dialSeed(addr *p2p.NetAddress) { peer, err := n.sw.DialPeerWithAddress(addr) if err != nil { log.Error("Error dialing seed", "error", err) //n.book.MarkAttempt(addr) return } else { log.Notice("Connected to seed", "peer", peer) n.book.AddAddress(addr, addr) } } func (n *Node) StartRPC() (net.Listener, error) { core.SetBlockStore(n.blockStore) core.SetConsensusState(n.consensusState) core.SetConsensusReactor(n.consensusReactor) core.SetMempoolReactor(n.mempoolReactor) core.SetSwitch(n.sw) core.SetPrivValidator(n.privValidator) core.SetGenDoc(n.genDoc) listenAddr := config.GetString("rpc_laddr") mux := http.NewServeMux() wm := rpcserver.NewWebsocketManager(core.Routes, n.evsw) mux.HandleFunc("/websocket", wm.WebsocketHandler) rpcserver.RegisterRPCFuncs(mux, core.Routes) return rpcserver.StartHTTPServer(listenAddr, mux) } func (n *Node) Switch() *p2p.Switch { return n.sw } func (n *Node) BlockStore() *bc.BlockStore { return n.blockStore } func (n *Node) ConsensusState() *consensus.ConsensusState { return n.consensusState } func (n *Node) MempoolReactor() *mempl.MempoolReactor { return n.mempoolReactor } func (n *Node) EventSwitch() *events.EventSwitch { return n.evsw } func makeNodeInfo(sw *p2p.Switch, privKey acm.PrivKeyEd25519) *types.NodeInfo { nodeInfo := &types.NodeInfo{ PubKey: privKey.PubKey().(acm.PubKeyEd25519), Moniker: config.GetString("moniker"), ChainID: config.GetString("chain_id"), Version: types.Versions{ Tendermint: Version, P2P: p2p.Version, RPC: rpc.Version, Wire: wire.Version, }, } // include git hash in the nodeInfo if available if rev, err := ReadFile(config.GetString("revisions_file")); err == nil { nodeInfo.Version.Revision = string(rev) } if !sw.IsListening() { return nodeInfo } p2pListener := sw.Listeners()[0] p2pHost := p2pListener.ExternalAddress().IP.String() p2pPort := p2pListener.ExternalAddress().Port rpcListenAddr := config.GetString("rpc_laddr") _, rpcPortStr, _ := net.SplitHostPort(rpcListenAddr) rpcPort, err := strconv.Atoi(rpcPortStr) if err != nil { PanicSanity(Fmt("Expected numeric RPC.ListenAddr port but got %v", rpcPortStr)) } // We assume that the rpcListener has the same ExternalAddress. // This is probably true because both P2P and RPC listeners use UPnP, // except of course if the rpc is only bound to localhost nodeInfo.Host = p2pHost nodeInfo.P2PPort = p2pPort nodeInfo.RPCPort = uint16(rpcPort) return nodeInfo } //------------------------------------------------------------------------------ func RunNode() { // Create & start node n := NewNode() l := p2p.NewDefaultListener("tcp", config.GetString("node_laddr")) n.AddListener(l) err := n.Start() if err != nil { Exit(Fmt("Failed to start node: %v", err)) } log.Notice("Started node", "nodeInfo", n.sw.NodeInfo()) // If seedNode is provided by config, dial out. if config.GetString("seeds") != "" { n.DialSeed() } // Run the RPC server. if config.GetString("rpc_laddr") != "" { _, err := n.StartRPC() if err != nil { PanicCrisis(err) } } // Sleep forever and then... TrapSignal(func() { n.Stop() }) }