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437 lines
13 KiB
437 lines
13 KiB
package node
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import (
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"bytes"
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"io/ioutil"
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"net"
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"net/http"
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"strings"
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"sync"
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"time"
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. "github.com/tendermint/go-common"
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cfg "github.com/tendermint/go-config"
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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-events"
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"github.com/tendermint/go-p2p"
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"github.com/tendermint/go-rpc"
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"github.com/tendermint/go-rpc/server"
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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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mempl "github.com/tendermint/tendermint/mempool"
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"github.com/tendermint/tendermint/proxy"
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rpccore "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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"github.com/tendermint/tendermint/version"
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tmspcli "github.com/tendermint/tmsp/client"
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"github.com/tendermint/tmsp/example/dummy"
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"github.com/tendermint/tmsp/example/nil"
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)
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import _ "net/http/pprof"
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type Node struct {
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config cfg.Config
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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(config cfg.Config, privValidator *types.PrivValidator, getProxyApp func(proxyAddr string, appHash []byte) proxy.AppConn) *Node {
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EnsureDir(config.GetString("db_dir"), 0700) // incase we use memdb, cswal still gets written here
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// Get BlockStore
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blockStoreDB := dbm.NewDB("blockstore", config.GetString("db_backend"), config.GetString("db_dir"))
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blockStore := bc.NewBlockStore(blockStoreDB)
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// Get State db
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stateDB := dbm.NewDB("state", config.GetString("db_backend"), config.GetString("db_dir"))
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// Get State
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state := getState(config, stateDB)
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// Create two proxyAppConn 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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proxyAppConnMempool := getProxyApp(proxyAddr, state.AppHash)
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proxyAppConnConsensus := getProxyApp(proxyAddr, state.AppHash)
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// add the chainid and number of validators to the global config
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config.Set("chain_id", state.ChainID)
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config.Set("num_vals", state.Validators.Size())
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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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// Decide whether to fast-sync or not
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// We don't fast-sync when the only validator is us.
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fastSync := config.GetBool("fast_sync")
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if state.Validators.Size() == 1 {
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addr, _ := state.Validators.GetByIndex(0)
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if bytes.Equal(privValidator.Address, addr) {
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fastSync = false
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}
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}
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// Make BlockchainReactor
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bcReactor := bc.NewBlockchainReactor(state.Copy(), proxyAppConnConsensus, blockStore, fastSync)
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// Make MempoolReactor
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mempool := mempl.NewMempool(config, proxyAppConnMempool)
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mempoolReactor := mempl.NewMempoolReactor(config, mempool)
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// Make ConsensusReactor
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consensusState := consensus.NewConsensusState(config, state.Copy(), proxyAppConnConsensus, blockStore, mempool)
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consensusReactor := consensus.NewConsensusReactor(consensusState, blockStore, fastSync)
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if privValidator != nil {
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consensusReactor.SetPrivValidator(privValidator)
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}
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// deterministic accountability
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err = consensusState.OpenWAL(config.GetString("cswal"))
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if err != nil {
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log.Error("Failed to open cswal", "error", err.Error())
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}
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// Make p2p network switch
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sw := p2p.NewSwitch(config)
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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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config: config,
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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.config, 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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func (n *Node) StartRPC() ([]net.Listener, error) {
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rpccore.SetBlockStore(n.blockStore)
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rpccore.SetConsensusState(n.consensusState)
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rpccore.SetConsensusReactor(n.consensusReactor)
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rpccore.SetMempoolReactor(n.mempoolReactor)
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rpccore.SetSwitch(n.sw)
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rpccore.SetPrivValidator(n.privValidator)
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rpccore.SetGenesisDoc(n.genesisDoc)
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listenAddrs := strings.Split(n.config.GetString("rpc_laddr"), ",")
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// we may expose the rpc over both a unix and tcp socket
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listeners := make([]net.Listener, len(listenAddrs))
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for i, listenAddr := range listenAddrs {
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mux := http.NewServeMux()
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wm := rpcserver.NewWebsocketManager(rpccore.Routes, n.evsw)
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mux.HandleFunc("/websocket", wm.WebsocketHandler)
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rpcserver.RegisterRPCFuncs(mux, rpccore.Routes)
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listener, err := rpcserver.StartHTTPServer(listenAddr, mux)
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if err != nil {
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return nil, err
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}
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listeners[i] = listener
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}
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return listeners, nil
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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(config cfg.Config, 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.Version,
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Other: []string{
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Fmt("wire_version=%v", wire.Version),
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Fmt("p2p_version=%v", p2p.Version),
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Fmt("consensus_version=%v", consensus.Version),
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Fmt("rpc_version=%v/%v", rpc.Version, rpccore.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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// Get a connection to the proxyAppConn 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) (proxyAppConn proxy.AppConn) {
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// use local app (for testing)
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switch addr {
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case "nilapp":
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app := nilapp.NewNilApplication()
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mtx := new(sync.Mutex)
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proxyAppConn = tmspcli.NewLocalClient(mtx, app)
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case "dummy":
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app := dummy.NewDummyApplication()
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mtx := new(sync.Mutex)
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proxyAppConn = tmspcli.NewLocalClient(mtx, app)
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default:
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// Run forever in a loop
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remoteApp, err := proxy.NewRemoteAppConn(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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proxyAppConn = remoteApp
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}
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// Check the hash
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res := proxyAppConn.CommitSync()
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if res.IsErr() {
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PanicCrisis(Fmt("Error in getting proxyAppConn hash: %v", res))
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}
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if !bytes.Equal(hash, res.Data) {
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log.Warn(Fmt("ProxyApp hash does not match. Expected %X, got %X", hash, res.Data))
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}
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return proxyAppConn
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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(config cfg.Config, stateDB dbm.DB) *sm.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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//------------------------------------------------------------------------------
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// Users wishing to use an external signer for their validators
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// should fork tendermint/tendermint and implement RunNode to
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// load their custom priv validator and call NewNode(privVal, getProxyFunc)
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func RunNode(config cfg.Config) {
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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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// Get PrivValidator
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privValidatorFile := config.GetString("priv_validator_file")
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privValidator := types.LoadOrGenPrivValidator(privValidatorFile)
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// Create & start node
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n := NewNode(config, privValidator, GetProxyApp)
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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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seeds := strings.Split(config.GetString("seeds"), ",")
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n.sw.DialSeeds(seeds)
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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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func (n *Node) NodeInfo() *p2p.NodeInfo {
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return n.sw.NodeInfo()
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}
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func (n *Node) DialSeeds(seeds []string) {
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n.sw.DialSeeds(seeds)
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}
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//------------------------------------------------------------------------------
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// replay
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// convenience for replay mode
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func newConsensusState(config cfg.Config) *consensus.ConsensusState {
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// Get BlockStore
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blockStoreDB := dbm.NewDB("blockstore", config.GetString("db_backend"), config.GetString("db_dir"))
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blockStore := bc.NewBlockStore(blockStoreDB)
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// Get State
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stateDB := dbm.NewDB("state", config.GetString("db_backend"), config.GetString("db_dir"))
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state := sm.MakeGenesisStateFromFile(stateDB, config.GetString("genesis_file"))
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// Create two proxyAppConn 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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proxyAppConnMempool := GetProxyApp(proxyAddr, state.AppHash)
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proxyAppConnConsensus := GetProxyApp(proxyAddr, state.AppHash)
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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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// 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 event switch: %v", err))
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}
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mempool := mempl.NewMempool(config, proxyAppConnMempool)
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consensusState := consensus.NewConsensusState(config, state.Copy(), proxyAppConnConsensus, blockStore, mempool)
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consensusState.SetEventSwitch(eventSwitch)
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return consensusState
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}
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func RunReplayConsole(config cfg.Config) {
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walFile := config.GetString("cswal")
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if walFile == "" {
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Exit("cswal file name not set in tendermint config")
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}
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consensusState := newConsensusState(config)
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if err := consensusState.ReplayConsole(walFile); err != nil {
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Exit(Fmt("Error during consensus replay: %v", err))
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}
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}
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func RunReplay(config cfg.Config) {
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walFile := config.GetString("cswal")
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if walFile == "" {
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Exit("cswal file name not set in tendermint config")
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}
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consensusState := newConsensusState(config)
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if err := consensusState.ReplayMessages(walFile); err != nil {
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Exit(Fmt("Error during consensus replay: %v", err))
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}
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log.Notice("Replay run successfully")
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}
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