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.
199 lines
6.2 KiB
199 lines
6.2 KiB
package consensus
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"fmt"
|
|
"math/rand"
|
|
"os"
|
|
"path/filepath"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/pkg/errors"
|
|
"github.com/tendermint/abci/example/dummy"
|
|
bc "github.com/tendermint/tendermint/blockchain"
|
|
cfg "github.com/tendermint/tendermint/config"
|
|
"github.com/tendermint/tendermint/proxy"
|
|
sm "github.com/tendermint/tendermint/state"
|
|
"github.com/tendermint/tendermint/types"
|
|
auto "github.com/tendermint/tmlibs/autofile"
|
|
"github.com/tendermint/tmlibs/db"
|
|
"github.com/tendermint/tmlibs/log"
|
|
)
|
|
|
|
// WALWithNBlocks generates a consensus WAL. It does this by spining up a
|
|
// stripped down version of node (proxy app, event bus, consensus state) with a
|
|
// persistent dummy application and special consensus wal instance
|
|
// (byteBufferWAL) and waits until numBlocks are created. Then it returns a WAL
|
|
// content.
|
|
func WALWithNBlocks(numBlocks int) (data []byte, err error) {
|
|
config := getConfig()
|
|
|
|
app := dummy.NewPersistentDummyApplication(filepath.Join(config.DBDir(), "wal_generator"))
|
|
|
|
logger := log.TestingLogger().With("wal_generator", "wal_generator")
|
|
logger.Info("generating WAL (last height msg excluded)", "numBlocks", numBlocks)
|
|
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
// COPY PASTE FROM node.go WITH A FEW MODIFICATIONS
|
|
// NOTE: we can't import node package because of circular dependency
|
|
privValidatorFile := config.PrivValidatorFile()
|
|
privValidator := types.LoadOrGenPrivValidatorFS(privValidatorFile)
|
|
genDoc, err := types.GenesisDocFromFile(config.GenesisFile())
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "failed to read genesis file")
|
|
}
|
|
stateDB := db.NewMemDB()
|
|
blockStoreDB := db.NewMemDB()
|
|
state, err := sm.MakeGenesisState(stateDB, genDoc)
|
|
state.SetLogger(logger.With("module", "state"))
|
|
if err != nil {
|
|
return nil, errors.Wrap(err, "failed to make genesis state")
|
|
}
|
|
blockStore := bc.NewBlockStore(blockStoreDB)
|
|
handshaker := NewHandshaker(state, blockStore)
|
|
proxyApp := proxy.NewAppConns(proxy.NewLocalClientCreator(app), handshaker)
|
|
proxyApp.SetLogger(logger.With("module", "proxy"))
|
|
if err := proxyApp.Start(); err != nil {
|
|
return nil, errors.Wrap(err, "failed to start proxy app connections")
|
|
}
|
|
defer proxyApp.Stop()
|
|
eventBus := types.NewEventBus()
|
|
eventBus.SetLogger(logger.With("module", "events"))
|
|
if err := eventBus.Start(); err != nil {
|
|
return nil, errors.Wrap(err, "failed to start event bus")
|
|
}
|
|
defer eventBus.Stop()
|
|
mempool := types.MockMempool{}
|
|
consensusState := NewConsensusState(config.Consensus, state.Copy(), proxyApp.Consensus(), blockStore, mempool)
|
|
consensusState.SetLogger(logger)
|
|
consensusState.SetEventBus(eventBus)
|
|
if privValidator != nil {
|
|
consensusState.SetPrivValidator(privValidator)
|
|
}
|
|
// END OF COPY PASTE
|
|
/////////////////////////////////////////////////////////////////////////////
|
|
|
|
// set consensus wal to buffered WAL, which will write all incoming msgs to buffer
|
|
var b bytes.Buffer
|
|
wr := bufio.NewWriter(&b)
|
|
numBlocksWritten := make(chan struct{})
|
|
wal := newByteBufferWAL(logger, NewWALEncoder(wr), int64(numBlocks), numBlocksWritten)
|
|
// see wal.go#103
|
|
wal.Save(EndHeightMessage{0})
|
|
consensusState.wal = wal
|
|
|
|
if err := consensusState.Start(); err != nil {
|
|
return nil, errors.Wrap(err, "failed to start consensus state")
|
|
}
|
|
defer consensusState.Stop()
|
|
|
|
select {
|
|
case <-numBlocksWritten:
|
|
wr.Flush()
|
|
return b.Bytes(), nil
|
|
case <-time.After(1 * time.Minute):
|
|
wr.Flush()
|
|
return b.Bytes(), fmt.Errorf("waited too long for tendermint to produce %d blocks (grep logs for `wal_generator`)", numBlocks)
|
|
}
|
|
}
|
|
|
|
// f**ing long, but unique for each test
|
|
func makePathname() string {
|
|
// get path
|
|
p, err := os.Getwd()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
// fmt.Println(p)
|
|
sep := string(filepath.Separator)
|
|
return strings.Replace(p, sep, "_", -1)
|
|
}
|
|
|
|
func randPort() int {
|
|
// returns between base and base + spread
|
|
base, spread := 20000, 20000
|
|
return base + rand.Intn(spread)
|
|
}
|
|
|
|
func makeAddrs() (string, string, string) {
|
|
start := randPort()
|
|
return fmt.Sprintf("tcp://0.0.0.0:%d", start),
|
|
fmt.Sprintf("tcp://0.0.0.0:%d", start+1),
|
|
fmt.Sprintf("tcp://0.0.0.0:%d", start+2)
|
|
}
|
|
|
|
// getConfig returns a config for test cases
|
|
func getConfig() *cfg.Config {
|
|
pathname := makePathname()
|
|
c := cfg.ResetTestRoot(pathname)
|
|
|
|
// and we use random ports to run in parallel
|
|
tm, rpc, grpc := makeAddrs()
|
|
c.P2P.ListenAddress = tm
|
|
c.RPC.ListenAddress = rpc
|
|
c.RPC.GRPCListenAddress = grpc
|
|
return c
|
|
}
|
|
|
|
// byteBufferWAL is a WAL which writes all msgs to a byte buffer. Writing stops
|
|
// when the heightToStop is reached. Client will be notified via
|
|
// signalWhenStopsTo channel.
|
|
type byteBufferWAL struct {
|
|
enc *WALEncoder
|
|
stopped bool
|
|
heightToStop int64
|
|
signalWhenStopsTo chan<- struct{}
|
|
|
|
logger log.Logger
|
|
}
|
|
|
|
// needed for determinism
|
|
var fixedTime, _ = time.Parse(time.RFC3339, "2017-01-02T15:04:05Z")
|
|
|
|
func newByteBufferWAL(logger log.Logger, enc *WALEncoder, nBlocks int64, signalStop chan<- struct{}) *byteBufferWAL {
|
|
return &byteBufferWAL{
|
|
enc: enc,
|
|
heightToStop: nBlocks,
|
|
signalWhenStopsTo: signalStop,
|
|
logger: logger,
|
|
}
|
|
}
|
|
|
|
// Save writes message to the internal buffer except when heightToStop is
|
|
// reached, in which case it will signal the caller via signalWhenStopsTo and
|
|
// skip writing.
|
|
func (w *byteBufferWAL) Save(m WALMessage) {
|
|
if w.stopped {
|
|
w.logger.Debug("WAL already stopped. Not writing message", "msg", m)
|
|
return
|
|
}
|
|
|
|
if endMsg, ok := m.(EndHeightMessage); ok {
|
|
w.logger.Debug("WAL write end height message", "height", endMsg.Height, "stopHeight", w.heightToStop)
|
|
if endMsg.Height == w.heightToStop {
|
|
w.logger.Debug("Stopping WAL at height", "height", endMsg.Height)
|
|
w.signalWhenStopsTo <- struct{}{}
|
|
w.stopped = true
|
|
return
|
|
}
|
|
}
|
|
|
|
w.logger.Debug("WAL Write Message", "msg", m)
|
|
err := w.enc.Encode(&TimedWALMessage{fixedTime, m})
|
|
if err != nil {
|
|
panic(fmt.Sprintf("failed to encode the msg %v", m))
|
|
}
|
|
}
|
|
|
|
func (w *byteBufferWAL) Group() *auto.Group {
|
|
panic("not implemented")
|
|
}
|
|
func (w *byteBufferWAL) SearchForEndHeight(height int64, options *WALSearchOptions) (gr *auto.GroupReader, found bool, err error) {
|
|
return nil, false, nil
|
|
}
|
|
|
|
func (w *byteBufferWAL) Start() error { return nil }
|
|
func (w *byteBufferWAL) Stop() error { return nil }
|
|
func (w *byteBufferWAL) Wait() {}
|