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258 lines
7.1 KiB
258 lines
7.1 KiB
package node
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import (
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"math/rand"
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"net"
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"net/http"
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"os"
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"strconv"
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bc "github.com/tendermint/tendermint/blockchain"
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. "github.com/tendermint/tendermint/common"
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"github.com/tendermint/tendermint/config"
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"github.com/tendermint/tendermint/consensus"
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dbm "github.com/tendermint/tendermint/db"
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"github.com/tendermint/tendermint/events"
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mempl "github.com/tendermint/tendermint/mempool"
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"github.com/tendermint/tendermint/p2p"
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"github.com/tendermint/tendermint/rpc"
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"github.com/tendermint/tendermint/rpc/core"
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sm "github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/types"
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)
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type Node struct {
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sw *p2p.Switch
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evsw *events.EventSwitch
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book *p2p.AddrBook
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blockStore *bc.BlockStore
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pexReactor *p2p.PEXReactor
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bcReactor *bc.BlockchainReactor
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mempoolReactor *mempl.MempoolReactor
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consensusState *consensus.ConsensusState
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consensusReactor *consensus.ConsensusReactor
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privValidator *sm.PrivValidator
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}
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func NewNode() *Node {
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// Get BlockStore
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blockStoreDB := dbm.GetDB("blockstore")
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blockStore := bc.NewBlockStore(blockStoreDB)
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// Get State
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stateDB := dbm.GetDB("state")
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state := sm.LoadState(stateDB)
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if state == nil {
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state = sm.MakeGenesisStateFromFile(stateDB, config.App().GetString("GenesisFile"))
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state.Save()
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}
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// Get PrivValidator
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var privValidator *sm.PrivValidator
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privValidatorFile := config.App().GetString("PrivValidatorFile")
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if _, err := os.Stat(privValidatorFile); err == nil {
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privValidator = sm.LoadPrivValidator(privValidatorFile)
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log.Info("Loaded PrivValidator",
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"file", privValidatorFile, "privValidator", privValidator)
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} else {
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privValidator = sm.GenPrivValidator()
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privValidator.SetFile(privValidatorFile)
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privValidator.Save()
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log.Info("Generated PrivValidator", "file", privValidatorFile)
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}
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eventSwitch := new(events.EventSwitch)
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eventSwitch.Start()
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// Get PEXReactor
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book := p2p.NewAddrBook(config.App().GetString("AddrBookFile"))
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pexReactor := p2p.NewPEXReactor(book)
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// Get BlockchainReactor
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bcReactor := bc.NewBlockchainReactor(state, blockStore, config.App().GetBool("FastSync"))
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// Get MempoolReactor
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mempool := mempl.NewMempool(state.Copy())
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mempoolReactor := mempl.NewMempoolReactor(mempool)
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// Get ConsensusReactor
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consensusState := consensus.NewConsensusState(state, blockStore, mempoolReactor)
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consensusReactor := consensus.NewConsensusReactor(consensusState, blockStore)
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if privValidator != nil {
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consensusReactor.SetPrivValidator(privValidator)
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}
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// so the consensus reactor won't do anything until we're synced
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if config.App().GetBool("FastSync") {
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consensusReactor.SetSyncing(true)
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}
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sw := p2p.NewSwitch()
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sw.AddReactor("PEX", pexReactor)
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sw.AddReactor("MEMPOOL", mempoolReactor)
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sw.AddReactor("BLOCKCHAIN", bcReactor)
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sw.AddReactor("CONSENSUS", consensusReactor)
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// add the event switch to all services
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// they should all satisfy events.Eventable
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SetFireable(eventSwitch, pexReactor, bcReactor, mempoolReactor, consensusReactor)
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return &Node{
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sw: sw,
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evsw: eventSwitch,
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book: book,
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blockStore: blockStore,
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pexReactor: pexReactor,
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bcReactor: bcReactor,
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mempoolReactor: mempoolReactor,
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consensusState: consensusState,
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consensusReactor: consensusReactor,
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privValidator: privValidator,
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}
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}
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// Call Start() after adding the listeners.
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func (n *Node) Start() {
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log.Info("Starting Node")
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n.book.Start()
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nodeInfo := makeNodeInfo(n.sw)
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n.sw.SetNodeInfo(nodeInfo)
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n.sw.Start()
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}
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func (n *Node) Stop() {
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log.Info("Stopping Node")
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// TODO: gracefully disconnect from peers.
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n.sw.Stop()
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n.book.Stop()
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}
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// Add the event switch to reactors, mempool, etc.
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func SetFireable(evsw *events.EventSwitch, eventables ...events.Eventable) {
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for _, e := range eventables {
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e.SetFireable(evsw)
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}
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}
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// Add a Listener to accept inbound peer connections.
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// Add listeners before starting the Node.
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// The first listener is the primary listener (in NodeInfo)
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func (n *Node) AddListener(l p2p.Listener) {
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log.Info(Fmt("Added %v", l))
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n.sw.AddListener(l)
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n.book.AddOurAddress(l.ExternalAddress())
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}
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func (n *Node) DialSeed() {
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// if the single seed node is available, use only it
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prioritySeed := config.App().GetString("SeedNode")
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if prioritySeed != "" {
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addr := p2p.NewNetAddressString(prioritySeed)
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n.dialSeed(addr)
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return
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}
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// permute the list, dial half of them
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seeds := config.App().GetStringSlice("SeedNodes")
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perm := rand.Perm(len(seeds))
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// TODO: we shouldn't necessarily connect to all of them every time ...
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for i := 0; i < len(perm); i++ {
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j := perm[i]
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addr := p2p.NewNetAddressString(seeds[j])
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n.dialSeed(addr)
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}
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}
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func (n *Node) dialSeed(addr *p2p.NetAddress) {
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peer, err := n.sw.DialPeerWithAddress(addr)
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if err != nil {
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log.Error("Error dialing seed", "error", err)
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//n.book.MarkAttempt(addr)
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return
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} else {
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log.Info("Connected to seed", "peer", peer)
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n.book.AddAddress(addr, addr)
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}
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}
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func (n *Node) StartRPC() {
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core.SetBlockStore(n.blockStore)
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core.SetConsensusState(n.consensusState)
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core.SetConsensusReactor(n.consensusReactor)
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core.SetMempoolReactor(n.mempoolReactor)
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core.SetSwitch(n.sw)
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listenAddr := config.App().GetString("RPC.HTTP.ListenAddr")
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mux := http.NewServeMux()
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rpc.RegisterEventsHandler(mux, n.evsw)
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rpc.RegisterRPCFuncs(mux, core.Routes)
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rpc.StartHTTPServer(listenAddr, mux)
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}
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func (n *Node) Switch() *p2p.Switch {
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return n.sw
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}
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func (n *Node) ConsensusState() *consensus.ConsensusState {
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return n.consensusState
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}
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func (n *Node) MempoolReactor() *mempl.MempoolReactor {
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return n.mempoolReactor
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}
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func (n *Node) EventSwitch() *events.EventSwitch {
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return n.evsw
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}
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func makeNodeInfo(sw *p2p.Switch) *types.NodeInfo {
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nodeInfo := &types.NodeInfo{
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Moniker: config.App().GetString("Moniker"),
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Network: config.App().GetString("Network"),
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Version: "0.0.1",
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}
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if !sw.IsListening() {
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return nodeInfo
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}
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p2pListener := sw.Listeners()[0]
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p2pHost := p2pListener.ExternalAddress().IP.String()
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p2pPort := p2pListener.ExternalAddress().Port
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rpcListenAddr := config.App().GetString("RPC.HTTP.ListenAddr")
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_, rpcPortStr, _ := net.SplitHostPort(rpcListenAddr)
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rpcPort, err := strconv.Atoi(rpcPortStr)
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if err != nil {
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panic(Fmt("Expected numeric RPC.HTTP.ListenAddr port but got %v", rpcPortStr))
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}
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// We assume that the rpcListener has the same ExternalAddress.
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// This is probably true because both P2P and RPC listeners use UPnP.
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nodeInfo.Host = p2pHost
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nodeInfo.P2PPort = p2pPort
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nodeInfo.RPCPort = uint16(rpcPort)
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return nodeInfo
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}
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//------------------------------------------------------------------------------
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func RunNode() {
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// Create & start node
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n := NewNode()
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l := p2p.NewDefaultListener("tcp", config.App().GetString("ListenAddr"), false)
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n.AddListener(l)
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n.Start()
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// If seedNode is provided by config, dial out.
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if config.App().GetString("SeedNode") != "" || len(config.App().GetStringSlice("SeedNodes")) != 0 {
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n.DialSeed()
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}
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// Run the RPC server.
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if config.App().GetString("RPC.HTTP.ListenAddr") != "" {
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n.StartRPC()
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}
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// Sleep forever and then...
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TrapSignal(func() {
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n.Stop()
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})
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}
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