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339 lines
9.3 KiB
339 lines
9.3 KiB
package node
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import (
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"bytes"
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"io/ioutil"
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"math/rand"
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"net"
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"net/http"
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"strings"
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"time"
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. "github.com/tendermint/go-common"
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"github.com/tendermint/go-crypto"
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dbm "github.com/tendermint/go-db"
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"github.com/tendermint/go-p2p"
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"github.com/tendermint/go-wire"
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bc "github.com/tendermint/tendermint/blockchain"
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"github.com/tendermint/tendermint/consensus"
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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/proxy"
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"github.com/tendermint/tendermint/rpc"
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"github.com/tendermint/tendermint/rpc/core"
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"github.com/tendermint/tendermint/rpc/server"
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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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import _ "net/http/pprof"
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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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blockStore *bc.BlockStore
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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 *types.PrivValidator
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genesisDoc *types.GenesisDoc
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privKey crypto.PrivKeyEd25519
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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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state := getState()
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// Create two proxyAppCtx connections,
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// one for the consensus and one for the mempool.
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proxyAddr := config.GetString("proxy_app")
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proxyAppCtxMempool := getProxyApp(proxyAddr, state.LastAppHash)
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proxyAppCtxConsensus := getProxyApp(proxyAddr, state.LastAppHash)
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// add the chainid to the global config
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config.Set("chain_id", state.ChainID)
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// Get PrivValidator
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privValidatorFile := config.GetString("priv_validator_file")
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privValidator := types.LoadOrGenPrivValidator(privValidatorFile)
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// Generate node PrivKey
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privKey := crypto.GenPrivKeyEd25519()
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// Make event switch
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eventSwitch := events.NewEventSwitch()
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_, err := eventSwitch.Start()
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if err != nil {
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Exit(Fmt("Failed to start switch: %v", err))
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}
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// Make BlockchainReactor
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bcReactor := bc.NewBlockchainReactor(state.Copy(), proxyAppCtxConsensus, blockStore, config.GetBool("fast_sync"))
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// Make MempoolReactor
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mempool := mempl.NewMempool(proxyAppCtxMempool)
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mempoolReactor := mempl.NewMempoolReactor(mempool)
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// Make ConsensusReactor
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consensusState := consensus.NewConsensusState(state.Copy(), proxyAppCtxConsensus, blockStore, mempool)
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consensusReactor := consensus.NewConsensusReactor(consensusState, blockStore, config.GetBool("fast_sync"))
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if privValidator != nil {
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consensusReactor.SetPrivValidator(privValidator)
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}
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// Make p2p network switch
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sw := p2p.NewSwitch()
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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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SetEventSwitch(eventSwitch, bcReactor, mempoolReactor, consensusReactor)
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// run the profile server
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profileHost := config.GetString("prof_laddr")
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if profileHost != "" {
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go func() {
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log.Warn("Profile server", "error", http.ListenAndServe(profileHost, nil))
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}()
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}
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return &Node{
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sw: sw,
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evsw: eventSwitch,
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blockStore: blockStore,
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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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genesisDoc: state.GenesisDoc,
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privKey: privKey,
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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() error {
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n.sw.SetNodeInfo(makeNodeInfo(n.sw, n.privKey))
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n.sw.SetNodePrivKey(n.privKey)
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_, err := n.sw.Start()
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return err
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}
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func (n *Node) Stop() {
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log.Notice("Stopping Node")
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// TODO: gracefully disconnect from peers.
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n.sw.Stop()
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}
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// Add the event switch to reactors, mempool, etc.
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func SetEventSwitch(evsw *events.EventSwitch, eventables ...events.Eventable) {
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for _, e := range eventables {
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e.SetEventSwitch(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.Notice(Fmt("Added %v", l))
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n.sw.AddListener(l)
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}
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// Dial a list of seeds in random order
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// Spawns a go routine for each dial
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func (n *Node) DialSeed() {
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// permute the list, dial them in random order.
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seeds := strings.Split(config.GetString("seeds"), ",")
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perm := rand.Perm(len(seeds))
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for i := 0; i < len(perm); i++ {
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go func(i int) {
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time.Sleep(time.Duration(rand.Int63n(3000)) * time.Millisecond)
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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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}(i)
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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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return
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} else {
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log.Notice("Connected to seed", "peer", peer)
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}
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}
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func (n *Node) StartRPC() (net.Listener, error) {
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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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core.SetPrivValidator(n.privValidator)
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core.SetGenesisDoc(n.genesisDoc)
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listenAddr := config.GetString("rpc_laddr")
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mux := http.NewServeMux()
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wm := rpcserver.NewWebsocketManager(core.Routes, n.evsw)
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mux.HandleFunc("/websocket", wm.WebsocketHandler)
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rpcserver.RegisterRPCFuncs(mux, core.Routes)
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return rpcserver.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) BlockStore() *bc.BlockStore {
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return n.blockStore
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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, privKey crypto.PrivKeyEd25519) *p2p.NodeInfo {
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nodeInfo := &p2p.NodeInfo{
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PubKey: privKey.PubKey().(crypto.PubKeyEd25519),
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Moniker: config.GetString("moniker"),
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Network: config.GetString("chain_id"),
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Version: Version,
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Other: []string{
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Fmt("p2p_version=%v", p2p.Version),
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Fmt("rpc_version=%v", rpc.Version),
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Fmt("wire_version=%v", wire.Version),
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},
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}
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// include git hash in the nodeInfo if available
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if rev, err := ReadFile(config.GetString("revision_file")); err == nil {
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nodeInfo.Other = append(nodeInfo.Other, Fmt("revision=%v", string(rev)))
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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.GetString("rpc_laddr")
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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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// except of course if the rpc is only bound to localhost
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nodeInfo.ListenAddr = Fmt("%v:%v", p2pHost, p2pPort)
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nodeInfo.Other = append(nodeInfo.Other, Fmt("rpc_addr=%v", rpcListenAddr))
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return nodeInfo
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}
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//------------------------------------------------------------------------------
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func RunNode() {
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// Wait until the genesis doc becomes available
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genDocFile := config.GetString("genesis_file")
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if !FileExists(genDocFile) {
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log.Notice(Fmt("Waiting for genesis file %v...", genDocFile))
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for {
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time.Sleep(time.Second)
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if !FileExists(genDocFile) {
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continue
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}
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jsonBlob, err := ioutil.ReadFile(genDocFile)
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if err != nil {
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Exit(Fmt("Couldn't read GenesisDoc file: %v", err))
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}
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genDoc := types.GenesisDocFromJSON(jsonBlob)
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if genDoc.ChainID == "" {
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PanicSanity(Fmt("Genesis doc %v must include non-empty chain_id", genDocFile))
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}
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config.Set("chain_id", genDoc.ChainID)
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config.Set("genesis_doc", genDoc)
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}
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}
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// Create & start node
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n := NewNode()
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l := p2p.NewDefaultListener("tcp", config.GetString("node_laddr"), config.GetBool("skip_upnp"))
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n.AddListener(l)
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err := n.Start()
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if err != nil {
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Exit(Fmt("Failed to start node: %v", err))
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}
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log.Notice("Started node", "nodeInfo", n.sw.NodeInfo())
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// If seedNode is provided by config, dial out.
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if config.GetString("seeds") != "" {
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n.DialSeed()
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}
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// Run the RPC server.
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if config.GetString("rpc_laddr") != "" {
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_, err := n.StartRPC()
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if err != nil {
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PanicCrisis(err)
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}
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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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// Load the most recent state from "state" db,
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// or create a new one (and save) from genesis.
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func getState() *sm.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.GetString("genesis_file"))
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state.Save()
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}
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return state
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}
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// Get a connection to the proxyAppCtx addr.
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// Check the current hash, and panic if it doesn't match.
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func getProxyApp(addr string, hash []byte) proxy.AppContext {
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proxyConn, err := Connect(addr)
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if err != nil {
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Exit(Fmt("Failed to connect to proxy for mempool: %v", err))
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}
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proxyAppCtx := proxy.NewRemoteAppContext(proxyConn, 1024)
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proxyAppCtx.Start()
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// Check the hash
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currentHash, err := proxyAppCtx.GetHashSync()
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if err != nil {
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PanicCrisis(Fmt("Error in getting proxyAppCtx hash: %v", err))
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}
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if !bytes.Equal(hash, currentHash) {
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PanicCrisis(Fmt("ProxyApp hash does not match. Expected %X, got %X", hash, currentHash))
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}
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return proxyAppCtx
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}
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