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package mempool
import (
"context"
"os"
"strings"
"sync"
"testing"
"time"
"github.com/stretchr/testify/require"
"github.com/tendermint/tendermint/abci/example/kvstore"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/config"
tmsync "github.com/tendermint/tendermint/internal/libs/sync"
"github.com/tendermint/tendermint/internal/p2p"
"github.com/tendermint/tendermint/internal/p2p/p2ptest"
"github.com/tendermint/tendermint/libs/log"
tmrand "github.com/tendermint/tendermint/libs/rand"
protomem "github.com/tendermint/tendermint/proto/tendermint/mempool"
"github.com/tendermint/tendermint/types"
)
type reactorTestSuite struct {
network *p2ptest.Network
logger log.Logger
reactors map[types.NodeID]*Reactor
mempoolChannels map[types.NodeID]*p2p.Channel
mempools map[types.NodeID]*TxMempool
kvstores map[types.NodeID]*kvstore.Application
peerChans map[types.NodeID]chan p2p.PeerUpdate
peerUpdates map[types.NodeID]*p2p.PeerUpdates
nodes []types.NodeID
}
func setupReactors(t *testing.T, numNodes int, chBuf uint) *reactorTestSuite {
t.Helper()
cfg, err := config.ResetTestRoot(strings.ReplaceAll(t.Name(), "/", "|"))
require.NoError(t, err)
t.Cleanup(func() { os.RemoveAll(cfg.RootDir) })
rts := &reactorTestSuite{
logger: log.TestingLogger().With("testCase", t.Name()),
network: p2ptest.MakeNetwork(t, p2ptest.NetworkOptions{NumNodes: numNodes}),
reactors: make(map[types.NodeID]*Reactor, numNodes),
mempoolChannels: make(map[types.NodeID]*p2p.Channel, numNodes),
mempools: make(map[types.NodeID]*TxMempool, numNodes),
kvstores: make(map[types.NodeID]*kvstore.Application, numNodes),
peerChans: make(map[types.NodeID]chan p2p.PeerUpdate, numNodes),
peerUpdates: make(map[types.NodeID]*p2p.PeerUpdates, numNodes),
}
chDesc := GetChannelDescriptor(cfg.Mempool)
rts.mempoolChannels = rts.network.MakeChannelsNoCleanup(t, chDesc)
for nodeID := range rts.network.Nodes {
rts.kvstores[nodeID] = kvstore.NewApplication()
mempool := setup(t, 0)
rts.mempools[nodeID] = mempool
rts.peerChans[nodeID] = make(chan p2p.PeerUpdate)
rts.peerUpdates[nodeID] = p2p.NewPeerUpdates(rts.peerChans[nodeID], 1)
rts.network.Nodes[nodeID].PeerManager.Register(rts.peerUpdates[nodeID])
rts.reactors[nodeID] = NewReactor(
rts.logger.With("nodeID", nodeID),
cfg.Mempool,
rts.network.Nodes[nodeID].PeerManager,
mempool,
rts.mempoolChannels[nodeID],
rts.peerUpdates[nodeID],
)
rts.nodes = append(rts.nodes, nodeID)
require.NoError(t, rts.reactors[nodeID].Start())
require.True(t, rts.reactors[nodeID].IsRunning())
}
require.Len(t, rts.reactors, numNodes)
t.Cleanup(func() {
for nodeID := range rts.reactors {
if rts.reactors[nodeID].IsRunning() {
require.NoError(t, rts.reactors[nodeID].Stop())
require.False(t, rts.reactors[nodeID].IsRunning())
}
}
})
return rts
}
func (rts *reactorTestSuite) start(t *testing.T) {
t.Helper()
rts.network.Start(t)
require.Len(t,
rts.network.RandomNode().PeerManager.Peers(),
len(rts.nodes)-1,
"network does not have expected number of nodes")
}
func (rts *reactorTestSuite) assertMempoolChannelsDrained(t *testing.T) {
t.Helper()
rts.stop(t)
for _, mch := range rts.mempoolChannels {
require.Empty(t, mch.Out, "checking channel %q (len=%d)", mch.ID, len(mch.Out))
}
}
func (rts *reactorTestSuite) stop(t *testing.T) {
for id, r := range rts.reactors {
require.NoError(t, r.Stop(), "stopping reactor %s", id)
r.Wait()
require.False(t, r.IsRunning(), "reactor %s did not stop", id)
}
}
func (rts *reactorTestSuite) waitForTxns(t *testing.T, txs []types.Tx, ids ...types.NodeID) {
t.Helper()
// ensure that the transactions get fully broadcast to the
// rest of the network
wg := &sync.WaitGroup{}
for name, pool := range rts.mempools {
if !p2ptest.NodeInSlice(name, ids) {
continue
}
wg.Add(1)
go func(pool *TxMempool) {
defer wg.Done()
require.Eventually(t, func() bool { return len(txs) == pool.Size() },
time.Minute,
100*time.Millisecond,
)
}(pool)
}
wg.Wait()
}
func TestReactorBroadcastDoesNotPanic(t *testing.T) {
numNodes := 2
rts := setupReactors(t, numNodes, 0)
observePanic := func(r interface{}) {
t.Fatal("panic detected in reactor")
}
primary := rts.nodes[0]
secondary := rts.nodes[1]
primaryReactor := rts.reactors[primary]
primaryMempool := primaryReactor.mempool
secondaryReactor := rts.reactors[secondary]
primaryReactor.observePanic = observePanic
secondaryReactor.observePanic = observePanic
firstTx := &WrappedTx{}
primaryMempool.insertTx(firstTx)
// run the router
rts.start(t)
closer := tmsync.NewCloser()
primaryReactor.peerWG.Add(1)
go primaryReactor.broadcastTxRoutine(secondary, closer)
wg := &sync.WaitGroup{}
for i := 0; i < 50; i++ {
next := &WrappedTx{}
wg.Add(1)
go func() {
defer wg.Done()
primaryMempool.insertTx(next)
}()
}
err := primaryReactor.Stop()
require.NoError(t, err)
primaryReactor.peerWG.Wait()
wg.Wait()
}
func TestReactorBroadcastTxs(t *testing.T) {
numTxs := 1000
numNodes := 10
rts := setupReactors(t, numNodes, 0)
primary := rts.nodes[0]
secondaries := rts.nodes[1:]
txs := checkTxs(t, rts.reactors[primary].mempool, numTxs, UnknownPeerID)
// run the router
rts.start(t)
// Wait till all secondary suites (reactor) received all mempool txs from the
// primary suite (node).
rts.waitForTxns(t, convertTex(txs), secondaries...)
rts.stop(t)
}
// regression test for https://github.com/tendermint/tendermint/issues/5408
func TestReactorConcurrency(t *testing.T) {
numTxs := 5
numNodes := 2
rts := setupReactors(t, numNodes, 0)
primary := rts.nodes[0]
secondary := rts.nodes[1]
rts.start(t)
var wg sync.WaitGroup
for i := 0; i < 1000; i++ {
wg.Add(2)
// 1. submit a bunch of txs
// 2. update the whole mempool
txs := checkTxs(t, rts.reactors[primary].mempool, numTxs, UnknownPeerID)
go func() {
defer wg.Done()
mempool := rts.mempools[primary]
mempool.Lock()
defer mempool.Unlock()
deliverTxResponses := make([]*abci.ResponseDeliverTx, len(txs))
for i := range txs {
deliverTxResponses[i] = &abci.ResponseDeliverTx{Code: 0}
}
require.NoError(t, mempool.Update(1, convertTex(txs), deliverTxResponses, nil, nil))
}()
// 1. submit a bunch of txs
// 2. update none
_ = checkTxs(t, rts.reactors[secondary].mempool, numTxs, UnknownPeerID)
go func() {
defer wg.Done()
mempool := rts.mempools[secondary]
mempool.Lock()
defer mempool.Unlock()
err := mempool.Update(1, []types.Tx{}, make([]*abci.ResponseDeliverTx, 0), nil, nil)
require.NoError(t, err)
}()
// flush the mempool
rts.mempools[secondary].Flush()
}
wg.Wait()
}
func TestReactorNoBroadcastToSender(t *testing.T) {
numTxs := 1000
numNodes := 2
rts := setupReactors(t, numNodes, uint(numTxs))
primary := rts.nodes[0]
secondary := rts.nodes[1]
peerID := uint16(1)
_ = checkTxs(t, rts.mempools[primary], numTxs, peerID)
rts.start(t)
time.Sleep(100 * time.Millisecond)
require.Eventually(t, func() bool {
return rts.mempools[secondary].Size() == 0
}, time.Minute, 100*time.Millisecond)
rts.assertMempoolChannelsDrained(t)
}
func TestReactor_MaxTxBytes(t *testing.T) {
numNodes := 2
cfg := config.TestConfig()
rts := setupReactors(t, numNodes, 0)
primary := rts.nodes[0]
secondary := rts.nodes[1]
// Broadcast a tx, which has the max size and ensure it's received by the
// second reactor.
tx1 := tmrand.Bytes(cfg.Mempool.MaxTxBytes)
err := rts.reactors[primary].mempool.CheckTx(
context.Background(),
tx1,
nil,
TxInfo{
SenderID: UnknownPeerID,
},
)
require.NoError(t, err)
rts.start(t)
rts.reactors[primary].mempool.Flush()
rts.reactors[secondary].mempool.Flush()
// broadcast a tx, which is beyond the max size and ensure it's not sent
tx2 := tmrand.Bytes(cfg.Mempool.MaxTxBytes + 1)
err = rts.mempools[primary].CheckTx(context.Background(), tx2, nil, TxInfo{SenderID: UnknownPeerID})
require.Error(t, err)
rts.assertMempoolChannelsDrained(t)
}
func TestDontExhaustMaxActiveIDs(t *testing.T) {
// we're creating a single node network, but not starting the
// network.
rts := setupReactors(t, 1, MaxActiveIDs+1)
nodeID := rts.nodes[0]
peerID, err := types.NewNodeID("0011223344556677889900112233445566778899")
require.NoError(t, err)
// ensure the reactor does not panic (i.e. exhaust active IDs)
for i := 0; i < MaxActiveIDs+1; i++ {
rts.peerChans[nodeID] <- p2p.PeerUpdate{
Status: p2p.PeerStatusUp,
NodeID: peerID,
}
rts.mempoolChannels[nodeID].Out <- p2p.Envelope{
To: peerID,
Message: &protomem.Txs{
Txs: [][]byte{},
},
}
}
require.Eventually(
t,
func() bool {
for _, mch := range rts.mempoolChannels {
if len(mch.Out) > 0 {
return false
}
}
return true
},
time.Minute,
10*time.Millisecond,
)
rts.assertMempoolChannelsDrained(t)
}
func TestMempoolIDsPanicsIfNodeRequestsOvermaxActiveIDs(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode")
}
// 0 is already reserved for UnknownPeerID
ids := NewMempoolIDs()
peerID, err := types.NewNodeID("0011223344556677889900112233445566778899")
require.NoError(t, err)
for i := 0; i < MaxActiveIDs-1; i++ {
ids.ReserveForPeer(peerID)
}
require.Panics(t, func() {
ids.ReserveForPeer(peerID)
})
}
func TestBroadcastTxForPeerStopsWhenPeerStops(t *testing.T) {
if testing.Short() {
t.Skip("skipping test in short mode")
}
rts := setupReactors(t, 2, 0)
primary := rts.nodes[0]
secondary := rts.nodes[1]
rts.start(t)
// disconnect peer
rts.peerChans[primary] <- p2p.PeerUpdate{
Status: p2p.PeerStatusDown,
NodeID: secondary,
}
time.Sleep(500 * time.Millisecond)
txs := checkTxs(t, rts.reactors[primary].mempool, 4, UnknownPeerID)
require.Equal(t, 4, len(txs))
require.Equal(t, 4, rts.mempools[primary].Size())
require.Equal(t, 0, rts.mempools[secondary].Size())
}