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package mempool
import (
"encoding/hex"
"errors"
"net"
"sync"
"testing"
"time"
"github.com/fortytw2/leaktest"
"github.com/go-kit/kit/log/term"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/abci/example/kvstore"
abci "github.com/tendermint/tendermint/abci/types"
cfg "github.com/tendermint/tendermint/config"
"github.com/tendermint/tendermint/libs/log"
tmrand "github.com/tendermint/tendermint/libs/rand"
"github.com/tendermint/tendermint/p2p"
"github.com/tendermint/tendermint/p2p/mock"
memproto "github.com/tendermint/tendermint/proto/tendermint/mempool"
"github.com/tendermint/tendermint/proxy"
"github.com/tendermint/tendermint/types"
)
const (
numTxs = 1000
timeout = 120 * time.Second // ridiculously high because CircleCI is slow
)
type peerState struct {
height int64
}
func (ps peerState) GetHeight() int64 {
return ps.height
}
// Send a bunch of txs to the first reactor's mempool and wait for them all to
// be received in the others.
func TestReactorBroadcastTxsMessage(t *testing.T) {
config := cfg.TestConfig()
// if there were more than two reactors, the order of transactions could not be
// asserted in waitForTxsOnReactors (due to transactions gossiping). If we
// replace Connect2Switches (full mesh) with a func, which connects first
// reactor to others and nothing else, this test should also pass with >2 reactors.
const N = 2
reactors := makeAndConnectReactors(config, N)
defer func() {
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
}()
for _, r := range reactors {
for _, peer := range r.Switch.Peers().List() {
peer.Set(types.PeerStateKey, peerState{1})
}
}
txs := checkTxs(t, reactors[0].mempool, numTxs, UnknownPeerID)
waitForTxsOnReactors(t, txs, reactors)
}
// regression test for https://github.com/tendermint/tendermint/issues/5408
func TestReactorConcurrency(t *testing.T) {
config := cfg.TestConfig()
const N = 2
reactors := makeAndConnectReactors(config, N)
defer func() {
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
}()
for _, r := range reactors {
for _, peer := range r.Switch.Peers().List() {
peer.Set(types.PeerStateKey, peerState{1})
}
}
var wg sync.WaitGroup
const numTxs = 5
for i := 0; i < 1000; i++ {
wg.Add(2)
// 1. submit a bunch of txs
// 2. update the whole mempool
txs := checkTxs(t, reactors[0].mempool, numTxs, UnknownPeerID)
go func() {
defer wg.Done()
reactors[0].mempool.Lock()
defer reactors[0].mempool.Unlock()
deliverTxResponses := make([]*abci.ResponseDeliverTx, len(txs))
for i := range txs {
deliverTxResponses[i] = &abci.ResponseDeliverTx{Code: 0}
}
err := reactors[0].mempool.Update(1, txs, deliverTxResponses, nil, nil)
assert.NoError(t, err)
}()
// 1. submit a bunch of txs
// 2. update none
_ = checkTxs(t, reactors[1].mempool, numTxs, UnknownPeerID)
go func() {
defer wg.Done()
reactors[1].mempool.Lock()
defer reactors[1].mempool.Unlock()
err := reactors[1].mempool.Update(1, []types.Tx{}, make([]*abci.ResponseDeliverTx, 0), nil, nil)
assert.NoError(t, err)
}()
// 1. flush the mempool
reactors[1].mempool.Flush()
}
wg.Wait()
}
// Send a bunch of txs to the first reactor's mempool, claiming it came from peer
// ensure peer gets no txs.
func TestReactorNoBroadcastToSender(t *testing.T) {
config := cfg.TestConfig()
const N = 2
reactors := makeAndConnectReactors(config, N)
defer func() {
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
}()
for _, r := range reactors {
for _, peer := range r.Switch.Peers().List() {
peer.Set(types.PeerStateKey, peerState{1})
}
}
const peerID = 1
checkTxs(t, reactors[0].mempool, numTxs, peerID)
ensureNoTxs(t, reactors[peerID], 100*time.Millisecond)
}
func TestReactor_MaxBatchBytes(t *testing.T) {
config := cfg.TestConfig()
config.Mempool.MaxBatchBytes = 1024
const N = 2
reactors := makeAndConnectReactors(config, N)
defer func() {
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
}()
for _, r := range reactors {
for _, peer := range r.Switch.Peers().List() {
peer.Set(types.PeerStateKey, peerState{1})
}
}
// Broadcast a tx, which has the max size (minus proto overhead)
// => ensure it's received by the second reactor.
tx1 := tmrand.Bytes(1018)
err := reactors[0].mempool.CheckTx(tx1, nil, TxInfo{SenderID: UnknownPeerID})
require.NoError(t, err)
waitForTxsOnReactors(t, []types.Tx{tx1}, reactors)
reactors[0].mempool.Flush()
reactors[1].mempool.Flush()
// Broadcast a tx, which is beyond the max size
// => ensure it's not sent
tx2 := tmrand.Bytes(1020)
err = reactors[0].mempool.CheckTx(tx2, nil, TxInfo{SenderID: UnknownPeerID})
require.NoError(t, err)
ensureNoTxs(t, reactors[1], 100*time.Millisecond)
// => ensure the second reactor did not disconnect from us
out, in, _ := reactors[1].Switch.NumPeers()
assert.Equal(t, 1, out+in)
}
func TestBroadcastTxForPeerStopsWhenPeerStops(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode.")
}
config := cfg.TestConfig()
const N = 2
reactors := makeAndConnectReactors(config, N)
defer func() {
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
}()
// stop peer
sw := reactors[1].Switch
sw.StopPeerForError(sw.Peers().List()[0], errors.New("some reason"))
// check that we are not leaking any go-routines
// i.e. broadcastTxRoutine finishes when peer is stopped
leaktest.CheckTimeout(t, 10*time.Second)()
}
func TestBroadcastTxForPeerStopsWhenReactorStops(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode.")
}
config := cfg.TestConfig()
const N = 2
reactors := makeAndConnectReactors(config, N)
// stop reactors
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
// check that we are not leaking any go-routines
// i.e. broadcastTxRoutine finishes when reactor is stopped
leaktest.CheckTimeout(t, 10*time.Second)()
}
func TestMempoolIDsBasic(t *testing.T) {
ids := newMempoolIDs()
peer := mock.NewPeer(net.IP{127, 0, 0, 1})
ids.ReserveForPeer(peer)
assert.EqualValues(t, 1, ids.GetForPeer(peer))
ids.Reclaim(peer)
ids.ReserveForPeer(peer)
assert.EqualValues(t, 2, ids.GetForPeer(peer))
ids.Reclaim(peer)
}
func TestMempoolIDsPanicsIfNodeRequestsOvermaxActiveIDs(t *testing.T) {
if testing.Short() {
return
}
// 0 is already reserved for UnknownPeerID
ids := newMempoolIDs()
for i := 0; i < maxActiveIDs-1; i++ {
peer := mock.NewPeer(net.IP{127, 0, 0, 1})
ids.ReserveForPeer(peer)
}
assert.Panics(t, func() {
peer := mock.NewPeer(net.IP{127, 0, 0, 1})
ids.ReserveForPeer(peer)
})
}
func TestDontExhaustMaxActiveIDs(t *testing.T) {
config := cfg.TestConfig()
const N = 1
reactors := makeAndConnectReactors(config, N)
defer func() {
for _, r := range reactors {
if err := r.Stop(); err != nil {
assert.NoError(t, err)
}
}
}()
reactor := reactors[0]
for i := 0; i < maxActiveIDs+1; i++ {
peer := mock.NewPeer(nil)
reactor.Receive(MempoolChannel, peer, []byte{0x1, 0x2, 0x3})
reactor.AddPeer(peer)
}
}
// mempoolLogger is a TestingLogger which uses a different
// color for each validator ("validator" key must exist).
func mempoolLogger() log.Logger {
return log.TestingLoggerWithColorFn(func(keyvals ...interface{}) term.FgBgColor {
for i := 0; i < len(keyvals)-1; i += 2 {
if keyvals[i] == "validator" {
return term.FgBgColor{Fg: term.Color(uint8(keyvals[i+1].(int) + 1))}
}
}
return term.FgBgColor{}
})
}
// connect N mempool reactors through N switches
func makeAndConnectReactors(config *cfg.Config, n int) []*Reactor {
reactors := make([]*Reactor, n)
logger := mempoolLogger()
for i := 0; i < n; i++ {
app := kvstore.NewApplication()
cc := proxy.NewLocalClientCreator(app)
mempool, cleanup := newMempoolWithApp(cc)
defer cleanup()
reactors[i] = NewReactor(config.Mempool, mempool) // so we dont start the consensus states
reactors[i].SetLogger(logger.With("validator", i))
}
p2p.MakeConnectedSwitches(config.P2P, n, func(i int, s *p2p.Switch) *p2p.Switch {
s.AddReactor("MEMPOOL", reactors[i])
return s
}, p2p.Connect2Switches)
return reactors
}
func waitForTxsOnReactors(t *testing.T, txs types.Txs, reactors []*Reactor) {
// wait for the txs in all mempools
wg := new(sync.WaitGroup)
for i, reactor := range reactors {
wg.Add(1)
go func(r *Reactor, reactorIndex int) {
defer wg.Done()
waitForTxsOnReactor(t, txs, r, reactorIndex)
}(reactor, i)
}
done := make(chan struct{})
go func() {
wg.Wait()
close(done)
}()
timer := time.After(timeout)
select {
case <-timer:
t.Fatal("Timed out waiting for txs")
case <-done:
}
}
func waitForTxsOnReactor(t *testing.T, txs types.Txs, reactor *Reactor, reactorIndex int) {
mempool := reactor.mempool
for mempool.Size() < len(txs) {
time.Sleep(time.Millisecond * 100)
}
reapedTxs := mempool.ReapMaxTxs(len(txs))
for i, tx := range txs {
assert.Equalf(t, tx, reapedTxs[i],
"txs at index %d on reactor %d don't match: %v vs %v", i, reactorIndex, tx, reapedTxs[i])
}
}
// ensure no txs on reactor after some timeout
func ensureNoTxs(t *testing.T, reactor *Reactor, timeout time.Duration) {
time.Sleep(timeout) // wait for the txs in all mempools
assert.Zero(t, reactor.mempool.Size())
}
func TestMempoolVectors(t *testing.T) {
testCases := []struct {
testName string
tx []byte
expBytes string
}{
{"tx 1", []byte{123}, "0a030a017b"},
{"tx 2", []byte("proto encoding in mempool"), "0a1b0a1970726f746f20656e636f64696e6720696e206d656d706f6f6c"},
}
for _, tc := range testCases {
tc := tc
msg := memproto.Message{
Sum: &memproto.Message_Txs{
Txs: &memproto.Txs{Txs: [][]byte{tc.tx}},
},
}
bz, err := msg.Marshal()
require.NoError(t, err, tc.testName)
require.Equal(t, tc.expBytes, hex.EncodeToString(bz), tc.testName)
}
}