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582 lines
17 KiB
582 lines
17 KiB
package node
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import (
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"bytes"
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"context"
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"encoding/json"
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"errors"
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"fmt"
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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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crypto "github.com/tendermint/go-crypto"
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wire "github.com/tendermint/go-wire"
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cmn "github.com/tendermint/tmlibs/common"
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dbm "github.com/tendermint/tmlibs/db"
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"github.com/tendermint/tmlibs/log"
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bc "github.com/tendermint/tendermint/blockchain"
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cfg "github.com/tendermint/tendermint/config"
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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/p2p"
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"github.com/tendermint/tendermint/p2p/trust"
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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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rpc "github.com/tendermint/tendermint/rpc/lib"
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rpcserver "github.com/tendermint/tendermint/rpc/lib/server"
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sm "github.com/tendermint/tendermint/state"
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"github.com/tendermint/tendermint/state/txindex"
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"github.com/tendermint/tendermint/state/txindex/kv"
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"github.com/tendermint/tendermint/state/txindex/null"
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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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//------------------------------------------------------------------------------
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// DBContext specifies config information for loading a new DB.
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type DBContext struct {
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ID string
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Config *cfg.Config
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}
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// DBProvider takes a DBContext and returns an instantiated DB.
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type DBProvider func(*DBContext) (dbm.DB, error)
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// DefaultDBProvider returns a database using the DBBackend and DBDir
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// specified in the ctx.Config.
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func DefaultDBProvider(ctx *DBContext) (dbm.DB, error) {
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return dbm.NewDB(ctx.ID, ctx.Config.DBBackend, ctx.Config.DBDir()), nil
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}
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// GenesisDocProvider returns a GenesisDoc.
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// It allows the GenesisDoc to be pulled from sources other than the
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// filesystem, for instance from a distributed key-value store cluster.
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type GenesisDocProvider func() (*types.GenesisDoc, error)
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// DefaultGenesisDocProviderFunc returns a GenesisDocProvider that loads
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// the GenesisDoc from the config.GenesisFile() on the filesystem.
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func DefaultGenesisDocProviderFunc(config *cfg.Config) GenesisDocProvider {
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return func() (*types.GenesisDoc, error) {
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return types.GenesisDocFromFile(config.GenesisFile())
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}
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}
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// NodeProvider takes a config and a logger and returns a ready to go Node.
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type NodeProvider func(*cfg.Config, log.Logger) (*Node, error)
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// DefaultNewNode returns a Tendermint node with default settings for the
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// PrivValidator, ClientCreator, GenesisDoc, and DBProvider.
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// It implements NodeProvider.
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func DefaultNewNode(config *cfg.Config, logger log.Logger) (*Node, error) {
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return NewNode(config,
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types.LoadOrGenPrivValidatorFS(config.PrivValidatorFile()),
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proxy.DefaultClientCreator(config.ProxyApp, config.ABCI, config.DBDir()),
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DefaultGenesisDocProviderFunc(config),
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DefaultDBProvider,
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logger)
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}
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//------------------------------------------------------------------------------
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// Node is the highest level interface to a full Tendermint node.
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// It includes all configuration information and running services.
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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
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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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trustMetricStore *trust.TrustMetricStore // trust metrics for all peers
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// services
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eventBus *types.EventBus // 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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txIndexer txindex.TxIndexer
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}
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// NewNode returns a new, ready to go, Tendermint Node.
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func NewNode(config *cfg.Config,
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privValidator types.PrivValidator,
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clientCreator proxy.ClientCreator,
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genesisDocProvider GenesisDocProvider,
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dbProvider DBProvider,
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logger log.Logger) (*Node, error) {
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// Get BlockStore
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blockStoreDB, err := dbProvider(&DBContext{"blockstore", config})
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if err != nil {
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return nil, err
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}
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blockStore := bc.NewBlockStore(blockStoreDB)
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consensusLogger := logger.With("module", "consensus")
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stateLogger := logger.With("module", "state")
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// Get State
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stateDB, err := dbProvider(&DBContext{"state", config})
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if err != nil {
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return nil, err
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}
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// Get genesis doc
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genDoc, err := loadGenesisDoc(stateDB)
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if err != nil {
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genDoc, err = genesisDocProvider()
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if err != nil {
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return nil, err
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}
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// save genesis doc to prevent a certain class of user errors (e.g. when it
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// was changed, accidentally or not). Also good for audit trail.
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saveGenesisDoc(stateDB, genDoc)
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}
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state := sm.LoadState(stateDB)
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if state == nil {
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state, err = sm.MakeGenesisState(stateDB, genDoc)
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if err != nil {
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return nil, err
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}
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state.Save()
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}
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state.SetLogger(stateLogger)
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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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handshaker := consensus.NewHandshaker(state, blockStore)
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handshaker.SetLogger(consensusLogger)
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proxyApp := proxy.NewAppConns(clientCreator, handshaker)
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proxyApp.SetLogger(logger.With("module", "proxy"))
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if err := proxyApp.Start(); err != nil {
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return nil, fmt.Errorf("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.LoadState(stateDB)
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state.SetLogger(stateLogger)
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// Transaction indexing
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var txIndexer txindex.TxIndexer
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switch config.TxIndex {
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case "kv":
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store, err := dbProvider(&DBContext{"tx_index", config})
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if err != nil {
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return nil, err
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}
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txIndexer = kv.NewTxIndex(store)
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default:
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txIndexer = &null.TxIndex{}
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}
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state.TxIndexer = txIndexer
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// Generate node PrivKey
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privKey := crypto.GenPrivKeyEd25519()
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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.FastSync
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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.GetAddress(), addr) {
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fastSync = false
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}
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}
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// Log whether this node is a validator or an observer
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if state.Validators.HasAddress(privValidator.GetAddress()) {
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consensusLogger.Info("This node is a validator")
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} else {
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consensusLogger.Info("This node is not a validator")
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}
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// Make BlockchainReactor
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bcReactor := bc.NewBlockchainReactor(state.Copy(), proxyApp.Consensus(), blockStore, fastSync)
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bcReactor.SetLogger(logger.With("module", "blockchain"))
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// Make MempoolReactor
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mempoolLogger := logger.With("module", "mempool")
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mempool := mempl.NewMempool(config.Mempool, proxyApp.Mempool(), state.LastBlockHeight)
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mempool.SetLogger(mempoolLogger)
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mempoolReactor := mempl.NewMempoolReactor(config.Mempool, mempool)
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mempoolReactor.SetLogger(mempoolLogger)
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if config.Consensus.WaitForTxs() {
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mempool.EnableTxsAvailable()
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}
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// Make ConsensusReactor
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consensusState := consensus.NewConsensusState(config.Consensus, state.Copy(), proxyApp.Consensus(), blockStore, mempool)
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consensusState.SetLogger(consensusLogger)
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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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consensusReactor.SetLogger(consensusLogger)
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p2pLogger := logger.With("module", "p2p")
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sw := p2p.NewSwitch(config.P2P)
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sw.SetLogger(p2pLogger)
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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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var trustMetricStore *trust.TrustMetricStore
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if config.P2P.PexReactor {
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addrBook = p2p.NewAddrBook(config.P2P.AddrBookFile(), config.P2P.AddrBookStrict)
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addrBook.SetLogger(p2pLogger.With("book", config.P2P.AddrBookFile()))
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// Get the trust metric history data
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trustHistoryDB, err := dbProvider(&DBContext{"trusthistory", config})
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if err != nil {
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return nil, err
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}
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trustMetricStore = trust.NewTrustMetricStore(trustHistoryDB, trust.DefaultConfig())
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trustMetricStore.SetLogger(p2pLogger)
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pexReactor := p2p.NewPEXReactor(addrBook)
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pexReactor.SetLogger(p2pLogger)
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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.FilterPeers {
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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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eventBus := types.NewEventBus()
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eventBus.SetLogger(logger.With("module", "events"))
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// services which will be publishing and/or subscribing for messages (events)
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bcReactor.SetEventBus(eventBus)
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consensusReactor.SetEventBus(eventBus)
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// run the profile server
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profileHost := config.ProfListenAddress
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if profileHost != "" {
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go func() {
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logger.Error("Profile server", "err", 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: genDoc,
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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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trustMetricStore: trustMetricStore,
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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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txIndexer: txIndexer,
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eventBus: eventBus,
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}
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node.BaseService = *cmn.NewBaseService(logger, "Node", node)
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return node, nil
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}
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// OnStart starts the Node. It implements cmn.Service.
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func (n *Node) OnStart() error {
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err := n.eventBus.Start()
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if err != nil {
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return err
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}
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// Run the RPC server first
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// so we can eg. receive txs for the first block
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if n.config.RPC.ListenAddress != "" {
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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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// Create & add listener
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protocol, address := cmn.ProtocolAndAddress(n.config.P2P.ListenAddress)
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l := p2p.NewDefaultListener(protocol, address, n.config.P2P.SkipUPNP, n.Logger.With("module", "p2p"))
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n.sw.AddListener(l)
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// Start the switch
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n.sw.SetNodeInfo(n.makeNodeInfo())
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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.P2P.Seeds != "" {
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// dial out
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seeds := strings.Split(n.config.P2P.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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return nil
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}
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// OnStop stops the Node. It implements cmn.Service.
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func (n *Node) OnStop() {
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n.BaseService.OnStop()
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n.Logger.Info("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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n.Logger.Info("Closing rpc listener", "listener", l)
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if err := l.Close(); err != nil {
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n.Logger.Error("Error closing listener", "listener", l, "err", err)
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}
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}
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n.eventBus.Stop()
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}
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// RunForever waits for an interrupt signal and stops the node.
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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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// AddListener adds a listener to accept inbound peer connections.
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// It should be called 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.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.GetPubKey())
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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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rpccore.SetTxIndexer(n.txIndexer)
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rpccore.SetConsensusReactor(n.consensusReactor)
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rpccore.SetEventBus(n.eventBus)
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rpccore.SetLogger(n.Logger.With("module", "rpc"))
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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.RPC.ListenAddress, ",")
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if n.config.RPC.Unsafe {
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rpccore.AddUnsafeRoutes()
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}
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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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rpcLogger := n.Logger.With("module", "rpc-server")
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onDisconnect := rpcserver.OnDisconnect(func(remoteAddr string) {
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err := n.eventBus.UnsubscribeAll(context.Background(), remoteAddr)
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if err != nil {
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rpcLogger.Error("Error unsubsribing from all on disconnect", "err", err)
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}
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})
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wm := rpcserver.NewWebsocketManager(rpccore.Routes, onDisconnect)
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wm.SetLogger(rpcLogger.With("protocol", "websocket"))
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mux.HandleFunc("/websocket", wm.WebsocketHandler)
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rpcserver.RegisterRPCFuncs(mux, rpccore.Routes, rpcLogger)
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listener, err := rpcserver.StartHTTPServer(listenAddr, mux, rpcLogger)
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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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|
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// we expose a simplified api over grpc for convenience to app devs
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grpcListenAddr := n.config.RPC.GRPCListenAddress
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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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// Switch returns the Node's Switch.
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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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// BlockStore returns the Node's BlockStore.
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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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|
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// ConsensusState returns the Node's ConsensusState.
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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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|
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// ConsensusReactor returns the Node's ConsensusReactor.
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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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|
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// MempoolReactor returns the Node's MempoolReactor.
|
|
func (n *Node) MempoolReactor() *mempl.MempoolReactor {
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return n.mempoolReactor
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}
|
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|
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// EventBus returns the Node's EventBus.
|
|
func (n *Node) EventBus() *types.EventBus {
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return n.eventBus
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|
}
|
|
|
|
// PrivValidator returns the Node's PrivValidator.
|
|
// XXX: for convenience only!
|
|
func (n *Node) PrivValidator() types.PrivValidator {
|
|
return n.privValidator
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|
}
|
|
|
|
// GenesisDoc returns the Node's GenesisDoc.
|
|
func (n *Node) GenesisDoc() *types.GenesisDoc {
|
|
return n.genesisDoc
|
|
}
|
|
|
|
// ProxyApp returns the Node's AppConns, representing its connections to the ABCI application.
|
|
func (n *Node) ProxyApp() proxy.AppConns {
|
|
return n.proxyApp
|
|
}
|
|
|
|
func (n *Node) makeNodeInfo() *p2p.NodeInfo {
|
|
txIndexerStatus := "on"
|
|
if _, ok := n.txIndexer.(*null.TxIndex); ok {
|
|
txIndexerStatus = "off"
|
|
}
|
|
nodeInfo := &p2p.NodeInfo{
|
|
PubKey: n.privKey.PubKey().Unwrap().(crypto.PubKeyEd25519),
|
|
Moniker: n.config.Moniker,
|
|
Network: n.genesisDoc.ChainID,
|
|
Version: version.Version,
|
|
Other: []string{
|
|
cmn.Fmt("wire_version=%v", wire.Version),
|
|
cmn.Fmt("p2p_version=%v", p2p.Version),
|
|
cmn.Fmt("consensus_version=%v", consensus.Version),
|
|
cmn.Fmt("rpc_version=%v/%v", rpc.Version, rpccore.Version),
|
|
cmn.Fmt("tx_index=%v", txIndexerStatus),
|
|
},
|
|
}
|
|
|
|
rpcListenAddr := n.config.RPC.ListenAddress
|
|
nodeInfo.Other = append(nodeInfo.Other, cmn.Fmt("rpc_addr=%v", rpcListenAddr))
|
|
|
|
if !n.sw.IsListening() {
|
|
return nodeInfo
|
|
}
|
|
|
|
p2pListener := n.sw.Listeners()[0]
|
|
p2pHost := p2pListener.ExternalAddress().IP.String()
|
|
p2pPort := p2pListener.ExternalAddress().Port
|
|
nodeInfo.ListenAddr = cmn.Fmt("%v:%v", p2pHost, p2pPort)
|
|
|
|
return nodeInfo
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
// NodeInfo returns the Node's Info from the Switch.
|
|
func (n *Node) NodeInfo() *p2p.NodeInfo {
|
|
return n.sw.NodeInfo()
|
|
}
|
|
|
|
// DialSeeds dials the given seeds on the Switch.
|
|
func (n *Node) DialSeeds(seeds []string) error {
|
|
return n.sw.DialSeeds(n.addrBook, seeds)
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
var (
|
|
genesisDocKey = []byte("genesisDoc")
|
|
)
|
|
|
|
// panics if failed to unmarshal bytes
|
|
func loadGenesisDoc(db dbm.DB) (*types.GenesisDoc, error) {
|
|
bytes := db.Get(genesisDocKey)
|
|
if len(bytes) == 0 {
|
|
return nil, errors.New("Genesis doc not found")
|
|
} else {
|
|
var genDoc *types.GenesisDoc
|
|
err := json.Unmarshal(bytes, &genDoc)
|
|
if err != nil {
|
|
cmn.PanicCrisis(fmt.Sprintf("Failed to load genesis doc due to unmarshaling error: %v (bytes: %X)", err, bytes))
|
|
}
|
|
return genDoc, nil
|
|
}
|
|
}
|
|
|
|
// panics if failed to marshal the given genesis document
|
|
func saveGenesisDoc(db dbm.DB, genDoc *types.GenesisDoc) {
|
|
bytes, err := json.Marshal(genDoc)
|
|
if err != nil {
|
|
cmn.PanicCrisis(fmt.Sprintf("Failed to save genesis doc due to marshaling error: %v", err))
|
|
}
|
|
db.SetSync(genesisDocKey, bytes)
|
|
}
|