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406 lines
12 KiB
406 lines
12 KiB
package node
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import (
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"bytes"
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"errors"
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"net"
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"net/http"
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"strings"
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abci "github.com/tendermint/abci/types"
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cmn "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-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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grpccore "github.com/tendermint/tendermint/rpc/grpc"
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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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_ "net/http/pprof"
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)
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type Node struct {
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cmn.BaseService
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// config
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config cfg.Config // user config
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genesisDoc *types.GenesisDoc // initial validator set
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privValidator *types.PrivValidator // local node's validator key
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// network
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privKey crypto.PrivKeyEd25519 // local node's p2p key
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sw *p2p.Switch // p2p connections
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addrBook *p2p.AddrBook // known peers
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// services
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evsw types.EventSwitch // pub/sub for services
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blockStore *bc.BlockStore // store the blockchain to disk
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bcReactor *bc.BlockchainReactor // for fast-syncing
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mempoolReactor *mempl.MempoolReactor // for gossipping transactions
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consensusState *consensus.ConsensusState // latest consensus state
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consensusReactor *consensus.ConsensusReactor // for participating in the consensus
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proxyApp proxy.AppConns // connection to the application
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rpcListeners []net.Listener // rpc servers
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}
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func NewNodeDefault(config cfg.Config) *Node {
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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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return NewNode(config, privValidator, proxy.DefaultClientCreator(config))
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}
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func NewNode(config cfg.Config, privValidator *types.PrivValidator, clientCreator proxy.ClientCreator) *Node {
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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.GetState(config, stateDB)
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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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// Create the proxyApp, which manages connections (consensus, mempool, query)
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// and sync tendermint and the app by replaying any necessary blocks
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proxyApp := proxy.NewAppConns(config, clientCreator, consensus.NewHandshaker(config, state, blockStore))
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if _, err := proxyApp.Start(); err != nil {
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cmn.Exit(cmn.Fmt("Error starting proxy app connections: %v", err))
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}
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// reload the state (it may have been updated by the handshake)
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state = sm.GetState(config, stateDB)
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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 := types.NewEventSwitch()
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_, err := eventSwitch.Start()
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if err != nil {
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cmn.Exit(cmn.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(config, state.Copy(), proxyApp.Consensus(), blockStore, fastSync)
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// Make MempoolReactor
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mempool := mempl.NewMempool(config, proxyApp.Mempool())
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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(), proxyApp.Consensus(), blockStore, mempool)
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if privValidator != nil {
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consensusState.SetPrivValidator(privValidator)
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}
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consensusReactor := consensus.NewConsensusReactor(consensusState, fastSync)
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// Make p2p network switch
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sw := p2p.NewSwitch(config.GetConfig("p2p"))
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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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// Optionally, start the pex reactor
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var addrBook *p2p.AddrBook
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if config.GetBool("pex_reactor") {
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addrBook = p2p.NewAddrBook(config.GetString("addrbook_file"), config.GetBool("addrbook_strict"))
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pexReactor := p2p.NewPEXReactor(addrBook)
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sw.AddReactor("PEX", pexReactor)
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}
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// Filter peers by addr or pubkey with an ABCI query.
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// If the query return code is OK, add peer.
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// XXX: Query format subject to change
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if config.GetBool("filter_peers") {
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// NOTE: addr is ip:port
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sw.SetAddrFilter(func(addr net.Addr) error {
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resQuery, err := proxyApp.Query().QuerySync(abci.RequestQuery{Path: cmn.Fmt("/p2p/filter/addr/%s", addr.String())})
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if err != nil {
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return err
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}
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if resQuery.Code.IsOK() {
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return nil
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}
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return errors.New(resQuery.Code.String())
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})
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sw.SetPubKeyFilter(func(pubkey crypto.PubKeyEd25519) error {
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resQuery, err := proxyApp.Query().QuerySync(abci.RequestQuery{Path: cmn.Fmt("/p2p/filter/pubkey/%X", pubkey.Bytes())})
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if err != nil {
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return err
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}
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if resQuery.Code.IsOK() {
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return nil
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}
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return errors.New(resQuery.Code.String())
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})
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}
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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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node := &Node{
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config: config,
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genesisDoc: state.GenesisDoc,
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privValidator: privValidator,
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privKey: privKey,
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sw: sw,
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addrBook: addrBook,
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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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proxyApp: proxyApp,
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}
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node.BaseService = *cmn.NewBaseService(log, "Node", node)
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return node
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}
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func (n *Node) OnStart() error {
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// Create & add listener
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protocol, address := ProtocolAndAddress(n.config.GetString("node_laddr"))
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l := p2p.NewDefaultListener(protocol, address, n.config.GetBool("skip_upnp"))
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n.sw.AddListener(l)
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// Start the switch
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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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if err != nil {
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return err
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}
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// If seeds exist, add them to the address book and dial out
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if n.config.GetString("seeds") != "" {
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// dial out
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seeds := strings.Split(n.config.GetString("seeds"), ",")
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if err := n.DialSeeds(seeds); err != nil {
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return err
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}
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}
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// Run the RPC server
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if n.config.GetString("rpc_laddr") != "" {
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listeners, err := n.startRPC()
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if err != nil {
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return err
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}
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n.rpcListeners = listeners
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}
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return nil
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}
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func (n *Node) OnStop() {
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n.BaseService.OnStop()
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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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for _, l := range n.rpcListeners {
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log.Info("Closing rpc listener", "listener", l)
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if err := l.Close(); err != nil {
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log.Error("Error closing listener", "listener", l, "error", err)
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}
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}
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}
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func (n *Node) RunForever() {
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// Sleep forever and then...
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cmn.TrapSignal(func() {
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n.Stop()
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})
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}
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// Add the event switch to reactors, mempool, etc.
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func SetEventSwitch(evsw types.EventSwitch, eventables ...types.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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n.sw.AddListener(l)
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}
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// ConfigureRPC sets all variables in rpccore so they will serve
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// rpc calls from this node
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func (n *Node) ConfigureRPC() {
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rpccore.SetConfig(n.config)
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rpccore.SetEventSwitch(n.evsw)
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rpccore.SetBlockStore(n.blockStore)
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rpccore.SetConsensusState(n.consensusState)
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rpccore.SetMempool(n.mempoolReactor.Mempool)
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rpccore.SetSwitch(n.sw)
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rpccore.SetPubKey(n.privValidator.PubKey)
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rpccore.SetGenesisDoc(n.genesisDoc)
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rpccore.SetAddrBook(n.addrBook)
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rpccore.SetProxyAppQuery(n.proxyApp.Query())
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}
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func (n *Node) startRPC() ([]net.Listener, error) {
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n.ConfigureRPC()
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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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// we expose a simplified api over grpc for convenience to app devs
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grpcListenAddr := n.config.GetString("grpc_laddr")
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if grpcListenAddr != "" {
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listener, err := grpccore.StartGRPCServer(grpcListenAddr)
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if err != nil {
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return nil, err
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}
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listeners = append(listeners, 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) ConsensusReactor() *consensus.ConsensusReactor {
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return n.consensusReactor
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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() types.EventSwitch {
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return n.evsw
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}
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// XXX: for convenience
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func (n *Node) PrivValidator() *types.PrivValidator {
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return n.privValidator
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}
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func (n *Node) GenesisDoc() *types.GenesisDoc {
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return n.genesisDoc
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}
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func (n *Node) ProxyApp() proxy.AppConns {
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return n.proxyApp
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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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cmn.Fmt("wire_version=%v", wire.Version),
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cmn.Fmt("p2p_version=%v", p2p.Version),
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cmn.Fmt("consensus_version=%v", consensus.Version),
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cmn.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 := cmn.ReadFile(config.GetString("revision_file")); err == nil {
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nodeInfo.Other = append(nodeInfo.Other, cmn.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 = cmn.Fmt("%v:%v", p2pHost, p2pPort)
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nodeInfo.Other = append(nodeInfo.Other, cmn.Fmt("rpc_addr=%v", rpcListenAddr))
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return nodeInfo
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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) error {
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return n.sw.DialSeeds(n.addrBook, seeds)
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}
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// Defaults to tcp
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func ProtocolAndAddress(listenAddr string) (string, string) {
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protocol, address := "tcp", listenAddr
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parts := strings.SplitN(address, "://", 2)
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if len(parts) == 2 {
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protocol, address = parts[0], parts[1]
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}
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return protocol, address
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}
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