You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
349 lines
8.8 KiB
349 lines
8.8 KiB
package consensus
|
|
|
|
import (
|
|
"bufio"
|
|
"context"
|
|
"fmt"
|
|
"io"
|
|
"os"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"github.com/pkg/errors"
|
|
|
|
bc "github.com/tendermint/tendermint/blockchain"
|
|
cfg "github.com/tendermint/tendermint/config"
|
|
cmn "github.com/tendermint/tendermint/libs/common"
|
|
dbm "github.com/tendermint/tendermint/libs/db"
|
|
"github.com/tendermint/tendermint/libs/log"
|
|
"github.com/tendermint/tendermint/proxy"
|
|
sm "github.com/tendermint/tendermint/state"
|
|
"github.com/tendermint/tendermint/types"
|
|
)
|
|
|
|
const (
|
|
// event bus subscriber
|
|
subscriber = "replay-file"
|
|
)
|
|
|
|
//--------------------------------------------------------
|
|
// replay messages interactively or all at once
|
|
|
|
// replay the wal file
|
|
func RunReplayFile(config cfg.BaseConfig, csConfig *cfg.ConsensusConfig, console bool) {
|
|
consensusState := newConsensusStateForReplay(config, csConfig)
|
|
|
|
if err := consensusState.ReplayFile(csConfig.WalFile(), console); err != nil {
|
|
cmn.Exit(fmt.Sprintf("Error during consensus replay: %v", err))
|
|
}
|
|
}
|
|
|
|
// Replay msgs in file or start the console
|
|
func (cs *ConsensusState) ReplayFile(file string, console bool) error {
|
|
|
|
if cs.IsRunning() {
|
|
return errors.New("cs is already running, cannot replay")
|
|
}
|
|
if cs.wal != nil {
|
|
return errors.New("cs wal is open, cannot replay")
|
|
}
|
|
|
|
cs.startForReplay()
|
|
|
|
// ensure all new step events are regenerated as expected
|
|
newStepCh := make(chan interface{}, 1)
|
|
|
|
ctx := context.Background()
|
|
err := cs.eventBus.Subscribe(ctx, subscriber, types.EventQueryNewRoundStep, newStepCh)
|
|
if err != nil {
|
|
return errors.Errorf("failed to subscribe %s to %v", subscriber, types.EventQueryNewRoundStep)
|
|
}
|
|
defer func() {
|
|
// drain newStepCh to make sure we don't block
|
|
LOOP:
|
|
for {
|
|
select {
|
|
case <-newStepCh:
|
|
default:
|
|
break LOOP
|
|
}
|
|
}
|
|
cs.eventBus.Unsubscribe(ctx, subscriber, types.EventQueryNewRoundStep)
|
|
}()
|
|
|
|
// just open the file for reading, no need to use wal
|
|
fp, err := os.OpenFile(file, os.O_RDONLY, 0600)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
pb := newPlayback(file, fp, cs, cs.state.Copy())
|
|
defer pb.fp.Close() // nolint: errcheck
|
|
|
|
var nextN int // apply N msgs in a row
|
|
var msg *TimedWALMessage
|
|
for {
|
|
if nextN == 0 && console {
|
|
nextN = pb.replayConsoleLoop()
|
|
}
|
|
|
|
msg, err = pb.dec.Decode()
|
|
if err == io.EOF {
|
|
return nil
|
|
} else if err != nil {
|
|
return err
|
|
}
|
|
|
|
if err := pb.cs.readReplayMessage(msg, newStepCh); err != nil {
|
|
return err
|
|
}
|
|
|
|
if nextN > 0 {
|
|
nextN--
|
|
}
|
|
pb.count++
|
|
}
|
|
return nil
|
|
}
|
|
|
|
//------------------------------------------------
|
|
// playback manager
|
|
|
|
type playback struct {
|
|
cs *ConsensusState
|
|
|
|
fp *os.File
|
|
dec *WALDecoder
|
|
count int // how many lines/msgs into the file are we
|
|
|
|
// replays can be reset to beginning
|
|
fileName string // so we can close/reopen the file
|
|
genesisState sm.State // so the replay session knows where to restart from
|
|
}
|
|
|
|
func newPlayback(fileName string, fp *os.File, cs *ConsensusState, genState sm.State) *playback {
|
|
return &playback{
|
|
cs: cs,
|
|
fp: fp,
|
|
fileName: fileName,
|
|
genesisState: genState,
|
|
dec: NewWALDecoder(fp),
|
|
}
|
|
}
|
|
|
|
// go back count steps by resetting the state and running (pb.count - count) steps
|
|
func (pb *playback) replayReset(count int, newStepCh chan interface{}) error {
|
|
pb.cs.Stop()
|
|
pb.cs.Wait()
|
|
|
|
newCS := NewConsensusState(pb.cs.config, pb.genesisState.Copy(), pb.cs.blockExec,
|
|
pb.cs.blockStore, pb.cs.txNotifier, pb.cs.evpool)
|
|
newCS.SetEventBus(pb.cs.eventBus)
|
|
newCS.startForReplay()
|
|
|
|
if err := pb.fp.Close(); err != nil {
|
|
return err
|
|
}
|
|
fp, err := os.OpenFile(pb.fileName, os.O_RDONLY, 0600)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
pb.fp = fp
|
|
pb.dec = NewWALDecoder(fp)
|
|
count = pb.count - count
|
|
fmt.Printf("Reseting from %d to %d\n", pb.count, count)
|
|
pb.count = 0
|
|
pb.cs = newCS
|
|
var msg *TimedWALMessage
|
|
for i := 0; i < count; i++ {
|
|
msg, err = pb.dec.Decode()
|
|
if err == io.EOF {
|
|
return nil
|
|
} else if err != nil {
|
|
return err
|
|
}
|
|
if err := pb.cs.readReplayMessage(msg, newStepCh); err != nil {
|
|
return err
|
|
}
|
|
pb.count++
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func (cs *ConsensusState) startForReplay() {
|
|
cs.Logger.Error("Replay commands are disabled until someone updates them and writes tests")
|
|
/* TODO:!
|
|
// since we replay tocks we just ignore ticks
|
|
go func() {
|
|
for {
|
|
select {
|
|
case <-cs.tickChan:
|
|
case <-cs.Quit:
|
|
return
|
|
}
|
|
}
|
|
}()*/
|
|
}
|
|
|
|
// console function for parsing input and running commands
|
|
func (pb *playback) replayConsoleLoop() int {
|
|
for {
|
|
fmt.Printf("> ")
|
|
bufReader := bufio.NewReader(os.Stdin)
|
|
line, more, err := bufReader.ReadLine()
|
|
if more {
|
|
cmn.Exit("input is too long")
|
|
} else if err != nil {
|
|
cmn.Exit(err.Error())
|
|
}
|
|
|
|
tokens := strings.Split(string(line), " ")
|
|
if len(tokens) == 0 {
|
|
continue
|
|
}
|
|
|
|
switch tokens[0] {
|
|
case "next":
|
|
// "next" -> replay next message
|
|
// "next N" -> replay next N messages
|
|
|
|
if len(tokens) == 1 {
|
|
return 0
|
|
}
|
|
i, err := strconv.Atoi(tokens[1])
|
|
if err != nil {
|
|
fmt.Println("next takes an integer argument")
|
|
} else {
|
|
return i
|
|
}
|
|
|
|
case "back":
|
|
// "back" -> go back one message
|
|
// "back N" -> go back N messages
|
|
|
|
// NOTE: "back" is not supported in the state machine design,
|
|
// so we restart and replay up to
|
|
|
|
ctx := context.Background()
|
|
// ensure all new step events are regenerated as expected
|
|
newStepCh := make(chan interface{}, 1)
|
|
|
|
err := pb.cs.eventBus.Subscribe(ctx, subscriber, types.EventQueryNewRoundStep, newStepCh)
|
|
if err != nil {
|
|
cmn.Exit(fmt.Sprintf("failed to subscribe %s to %v", subscriber, types.EventQueryNewRoundStep))
|
|
}
|
|
defer func() {
|
|
// drain newStepCh to make sure we don't block
|
|
LOOP:
|
|
for {
|
|
select {
|
|
case <-newStepCh:
|
|
default:
|
|
break LOOP
|
|
}
|
|
}
|
|
pb.cs.eventBus.Unsubscribe(ctx, subscriber, types.EventQueryNewRoundStep)
|
|
}()
|
|
|
|
if len(tokens) == 1 {
|
|
if err := pb.replayReset(1, newStepCh); err != nil {
|
|
pb.cs.Logger.Error("Replay reset error", "err", err)
|
|
}
|
|
} else {
|
|
i, err := strconv.Atoi(tokens[1])
|
|
if err != nil {
|
|
fmt.Println("back takes an integer argument")
|
|
} else if i > pb.count {
|
|
fmt.Printf("argument to back must not be larger than the current count (%d)\n", pb.count)
|
|
} else {
|
|
if err := pb.replayReset(i, newStepCh); err != nil {
|
|
pb.cs.Logger.Error("Replay reset error", "err", err)
|
|
}
|
|
}
|
|
}
|
|
|
|
case "rs":
|
|
// "rs" -> print entire round state
|
|
// "rs short" -> print height/round/step
|
|
// "rs <field>" -> print another field of the round state
|
|
|
|
rs := pb.cs.RoundState
|
|
if len(tokens) == 1 {
|
|
fmt.Println(rs)
|
|
} else {
|
|
switch tokens[1] {
|
|
case "short":
|
|
fmt.Printf("%v/%v/%v\n", rs.Height, rs.Round, rs.Step)
|
|
case "validators":
|
|
fmt.Println(rs.Validators)
|
|
case "proposal":
|
|
fmt.Println(rs.Proposal)
|
|
case "proposal_block":
|
|
fmt.Printf("%v %v\n", rs.ProposalBlockParts.StringShort(), rs.ProposalBlock.StringShort())
|
|
case "locked_round":
|
|
fmt.Println(rs.LockedRound)
|
|
case "locked_block":
|
|
fmt.Printf("%v %v\n", rs.LockedBlockParts.StringShort(), rs.LockedBlock.StringShort())
|
|
case "votes":
|
|
fmt.Println(rs.Votes.StringIndented(" "))
|
|
|
|
default:
|
|
fmt.Println("Unknown option", tokens[1])
|
|
}
|
|
}
|
|
case "n":
|
|
fmt.Println(pb.count)
|
|
}
|
|
}
|
|
return 0
|
|
}
|
|
|
|
//--------------------------------------------------------------------------------
|
|
|
|
// convenience for replay mode
|
|
func newConsensusStateForReplay(config cfg.BaseConfig, csConfig *cfg.ConsensusConfig) *ConsensusState {
|
|
dbType := dbm.DBBackendType(config.DBBackend)
|
|
// Get BlockStore
|
|
blockStoreDB := dbm.NewDB("blockstore", dbType, config.DBDir())
|
|
blockStore := bc.NewBlockStore(blockStoreDB)
|
|
|
|
// Get State
|
|
stateDB := dbm.NewDB("state", dbType, config.DBDir())
|
|
gdoc, err := sm.MakeGenesisDocFromFile(config.GenesisFile())
|
|
if err != nil {
|
|
cmn.Exit(err.Error())
|
|
}
|
|
state, err := sm.MakeGenesisState(gdoc)
|
|
if err != nil {
|
|
cmn.Exit(err.Error())
|
|
}
|
|
|
|
// Create proxyAppConn connection (consensus, mempool, query)
|
|
clientCreator := proxy.DefaultClientCreator(config.ProxyApp, config.ABCI, config.DBDir())
|
|
proxyApp := proxy.NewAppConns(clientCreator)
|
|
err = proxyApp.Start()
|
|
if err != nil {
|
|
cmn.Exit(fmt.Sprintf("Error starting proxy app conns: %v", err))
|
|
}
|
|
|
|
eventBus := types.NewEventBus()
|
|
if err := eventBus.Start(); err != nil {
|
|
cmn.Exit(fmt.Sprintf("Failed to start event bus: %v", err))
|
|
}
|
|
|
|
handshaker := NewHandshaker(stateDB, state, blockStore, gdoc)
|
|
handshaker.SetEventBus(eventBus)
|
|
err = handshaker.Handshake(proxyApp)
|
|
if err != nil {
|
|
cmn.Exit(fmt.Sprintf("Error on handshake: %v", err))
|
|
}
|
|
|
|
mempool, evpool := sm.MockMempool{}, sm.MockEvidencePool{}
|
|
blockExec := sm.NewBlockExecutor(stateDB, log.TestingLogger(), proxyApp.Consensus(), mempool, evpool)
|
|
|
|
consensusState := NewConsensusState(csConfig, state.Copy(), blockExec,
|
|
blockStore, mempool, evpool)
|
|
|
|
consensusState.SetEventBus(eventBus)
|
|
return consensusState
|
|
}
|