mirror of
https://source.quilibrium.com/quilibrium/ceremonyclient.git
synced 2024-11-14 04:05:17 +00:00
669 lines
12 KiB
Go
669 lines
12 KiB
Go
package eventbus
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"reflect"
|
|
"sync"
|
|
"sync/atomic"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/libp2p/go-libp2p/core/event"
|
|
|
|
"github.com/libp2p/go-libp2p-testing/race"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
type EventA struct{}
|
|
type EventB int
|
|
|
|
func getN() int {
|
|
n := 50000
|
|
if race.WithRace() {
|
|
n = 1000
|
|
}
|
|
return n
|
|
}
|
|
|
|
func (EventA) String() string {
|
|
return "Oh, Hello"
|
|
}
|
|
|
|
func TestDefaultSubIsBuffered(t *testing.T) {
|
|
bus := NewBus()
|
|
s, err := bus.Subscribe(new(EventA))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if cap(s.(*sub).ch) == 0 {
|
|
t.Fatalf("without any options subscribe should be buffered. was %d", cap(s.(*sub).ch))
|
|
}
|
|
}
|
|
|
|
func TestEmit(t *testing.T) {
|
|
bus := NewBus()
|
|
sub, err := bus.Subscribe(new(EventA))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
go func() {
|
|
defer sub.Close()
|
|
<-sub.Out()
|
|
}()
|
|
|
|
em, err := bus.Emitter(new(EventA))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
em.Emit(EventA{})
|
|
}
|
|
|
|
func TestSub(t *testing.T) {
|
|
bus := NewBus()
|
|
sub, err := bus.Subscribe(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var event EventB
|
|
|
|
var wait sync.WaitGroup
|
|
wait.Add(1)
|
|
|
|
go func() {
|
|
defer sub.Close()
|
|
event = (<-sub.Out()).(EventB)
|
|
wait.Done()
|
|
}()
|
|
|
|
em, err := bus.Emitter(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
em.Emit(EventB(7))
|
|
wait.Wait()
|
|
|
|
if event != 7 {
|
|
t.Error("got wrong event")
|
|
}
|
|
}
|
|
|
|
func TestGetAllEventTypes(t *testing.T) {
|
|
bus := NewBus()
|
|
require.Empty(t, bus.GetAllEventTypes())
|
|
|
|
// the wildcard subscription should be returned.
|
|
_, err := bus.Subscribe(event.WildcardSubscription)
|
|
require.NoError(t, err)
|
|
|
|
_, err = bus.Subscribe(new(EventB))
|
|
require.NoError(t, err)
|
|
|
|
evts := bus.GetAllEventTypes()
|
|
require.Len(t, evts, 1)
|
|
require.Equal(t, reflect.TypeOf((*EventB)(nil)).Elem(), evts[0])
|
|
|
|
_, err = bus.Emitter(new(EventA))
|
|
require.NoError(t, err)
|
|
|
|
evts = bus.GetAllEventTypes()
|
|
require.Len(t, evts, 2)
|
|
require.Contains(t, evts, reflect.TypeOf((*EventB)(nil)).Elem())
|
|
require.Contains(t, evts, reflect.TypeOf((*EventA)(nil)).Elem())
|
|
}
|
|
|
|
func TestEmitNoSubNoBlock(t *testing.T) {
|
|
bus := NewBus()
|
|
|
|
em, err := bus.Emitter(new(EventA))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
em.Emit(EventA{})
|
|
}
|
|
|
|
func TestEmitOnClosed(t *testing.T) {
|
|
bus := NewBus()
|
|
|
|
em, err := bus.Emitter(new(EventA))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
em.Close()
|
|
err = em.Emit(EventA{})
|
|
if err == nil {
|
|
t.Errorf("expected error")
|
|
}
|
|
if err.Error() != "emitter is closed" {
|
|
t.Error("unexpected message")
|
|
}
|
|
}
|
|
|
|
func TestClosingRaces(t *testing.T) {
|
|
subs := getN()
|
|
emits := getN()
|
|
|
|
var wg sync.WaitGroup
|
|
var lk sync.RWMutex
|
|
lk.Lock()
|
|
|
|
wg.Add(subs + emits)
|
|
|
|
b := NewBus()
|
|
|
|
for i := 0; i < subs; i++ {
|
|
go func() {
|
|
lk.RLock()
|
|
defer lk.RUnlock()
|
|
|
|
sub, _ := b.Subscribe(new(EventA))
|
|
time.Sleep(10 * time.Millisecond)
|
|
sub.Close()
|
|
|
|
wg.Done()
|
|
}()
|
|
}
|
|
for i := 0; i < emits; i++ {
|
|
go func() {
|
|
lk.RLock()
|
|
defer lk.RUnlock()
|
|
|
|
emit, _ := b.Emitter(new(EventA))
|
|
time.Sleep(10 * time.Millisecond)
|
|
emit.Close()
|
|
|
|
wg.Done()
|
|
}()
|
|
}
|
|
|
|
time.Sleep(10 * time.Millisecond)
|
|
lk.Unlock() // start everything
|
|
|
|
wg.Wait()
|
|
|
|
if len(b.(*basicBus).nodes) != 0 {
|
|
t.Error("expected no nodes")
|
|
}
|
|
}
|
|
|
|
func TestSubMany(t *testing.T) {
|
|
bus := NewBus()
|
|
|
|
var r atomic.Int32
|
|
|
|
n := getN()
|
|
var wait sync.WaitGroup
|
|
var ready sync.WaitGroup
|
|
wait.Add(n)
|
|
ready.Add(n)
|
|
|
|
for i := 0; i < n; i++ {
|
|
go func() {
|
|
sub, err := bus.Subscribe(new(EventB))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer sub.Close()
|
|
|
|
ready.Done()
|
|
r.Add(int32((<-sub.Out()).(EventB)))
|
|
wait.Done()
|
|
}()
|
|
}
|
|
|
|
em, err := bus.Emitter(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
ready.Wait()
|
|
|
|
em.Emit(EventB(7))
|
|
wait.Wait()
|
|
|
|
if int(r.Load()) != 7*n {
|
|
t.Error("got wrong result")
|
|
}
|
|
}
|
|
|
|
func TestWildcardSubscription(t *testing.T) {
|
|
bus := NewBus()
|
|
sub, err := bus.Subscribe(event.WildcardSubscription)
|
|
require.NoError(t, err)
|
|
defer sub.Close()
|
|
|
|
em1, err := bus.Emitter(new(EventA))
|
|
require.NoError(t, err)
|
|
defer em1.Close()
|
|
|
|
em2, err := bus.Emitter(new(EventB))
|
|
require.NoError(t, err)
|
|
defer em2.Close()
|
|
|
|
require.NoError(t, em1.Emit(EventA{}))
|
|
require.NoError(t, em2.Emit(EventB(1)))
|
|
|
|
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
|
|
defer cancel()
|
|
var evts []interface{}
|
|
|
|
LOOP:
|
|
for {
|
|
select {
|
|
case evt := <-sub.Out():
|
|
if evta, ok := evt.(EventA); ok {
|
|
evts = append(evts, evta)
|
|
}
|
|
|
|
if evtb, ok := evt.(EventB); ok {
|
|
evts = append(evts, evtb)
|
|
}
|
|
|
|
if len(evts) == 2 {
|
|
break LOOP
|
|
}
|
|
|
|
case <-ctx.Done():
|
|
t.Fatalf("did not receive events")
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestManyWildcardSubscriptions(t *testing.T) {
|
|
bus := NewBus()
|
|
var subs []event.Subscription
|
|
for i := 0; i < 10; i++ {
|
|
sub, err := bus.Subscribe(event.WildcardSubscription)
|
|
require.NoError(t, err)
|
|
subs = append(subs, sub)
|
|
}
|
|
|
|
em1, err := bus.Emitter(new(EventA))
|
|
require.NoError(t, err)
|
|
defer em1.Close()
|
|
|
|
em2, err := bus.Emitter(new(EventB))
|
|
require.NoError(t, err)
|
|
defer em2.Close()
|
|
|
|
require.NoError(t, em1.Emit(EventA{}))
|
|
require.NoError(t, em2.Emit(EventB(1)))
|
|
|
|
// all 10 subscriptions received all 2 events.
|
|
for _, s := range subs {
|
|
require.Len(t, s.Out(), 2)
|
|
}
|
|
|
|
// close the first five subscriptions.
|
|
for _, s := range subs[:5] {
|
|
require.NoError(t, s.Close())
|
|
}
|
|
|
|
// emit another 2 events.
|
|
require.NoError(t, em1.Emit(EventA{}))
|
|
require.NoError(t, em2.Emit(EventB(1)))
|
|
|
|
// the first five still have 2 events, while the other five have 4 events.
|
|
for _, s := range subs[:5] {
|
|
require.Len(t, s.Out(), 2)
|
|
}
|
|
|
|
for _, s := range subs[5:] {
|
|
require.Len(t, s.Out(), 4)
|
|
}
|
|
|
|
// close them all, the first five will be closed twice (asserts idempotency).
|
|
for _, s := range subs {
|
|
require.NoError(t, s.Close())
|
|
}
|
|
}
|
|
|
|
func TestWildcardValidations(t *testing.T) {
|
|
bus := NewBus()
|
|
|
|
_, err := bus.Subscribe([]interface{}{event.WildcardSubscription, new(EventA), new(EventB)})
|
|
require.Error(t, err)
|
|
|
|
_, err = bus.Emitter(event.WildcardSubscription)
|
|
require.Error(t, err)
|
|
}
|
|
|
|
func TestSubType(t *testing.T) {
|
|
bus := NewBus()
|
|
sub, err := bus.Subscribe([]interface{}{new(EventA), new(EventB)})
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
var event fmt.Stringer
|
|
|
|
var wait sync.WaitGroup
|
|
wait.Add(1)
|
|
|
|
go func() {
|
|
defer sub.Close()
|
|
event = (<-sub.Out()).(EventA)
|
|
wait.Done()
|
|
}()
|
|
|
|
em, err := bus.Emitter(new(EventA))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
em.Emit(EventA{})
|
|
wait.Wait()
|
|
|
|
if event.String() != "Oh, Hello" {
|
|
t.Error("didn't get the correct message")
|
|
}
|
|
}
|
|
|
|
func TestNonStateful(t *testing.T) {
|
|
bus := NewBus()
|
|
em, err := bus.Emitter(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
sub1, err := bus.Subscribe(new(EventB), BufSize(1))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer sub1.Close()
|
|
|
|
select {
|
|
case <-sub1.Out():
|
|
t.Fatal("didn't expect to get an event")
|
|
default:
|
|
}
|
|
|
|
em.Emit(EventB(1))
|
|
|
|
select {
|
|
case e := <-sub1.Out():
|
|
if e.(EventB) != 1 {
|
|
t.Fatal("got wrong event")
|
|
}
|
|
default:
|
|
t.Fatal("expected to get an event")
|
|
}
|
|
|
|
sub2, err := bus.Subscribe(new(EventB), BufSize(1))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer sub2.Close()
|
|
|
|
select {
|
|
case <-sub2.Out():
|
|
t.Fatal("didn't expect to get an event")
|
|
default:
|
|
}
|
|
}
|
|
|
|
func TestStateful(t *testing.T) {
|
|
bus := NewBus()
|
|
em, err := bus.Emitter(new(EventB), Stateful)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
em.Emit(EventB(2))
|
|
|
|
sub, err := bus.Subscribe(new(EventB), BufSize(1))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
defer sub.Close()
|
|
|
|
if (<-sub.Out()).(EventB) != 2 {
|
|
t.Fatal("got wrong event")
|
|
}
|
|
}
|
|
|
|
func TestCloseBlocking(t *testing.T) {
|
|
bus := NewBus()
|
|
em, err := bus.Emitter(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
sub, err := bus.Subscribe(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
go func() {
|
|
em.Emit(EventB(159))
|
|
}()
|
|
|
|
time.Sleep(10 * time.Millisecond) // make sure that emit is blocked
|
|
|
|
sub.Close() // cancel sub
|
|
}
|
|
|
|
func TestSubFailFully(t *testing.T) {
|
|
bus := NewBus()
|
|
em, err := bus.Emitter(new(EventB))
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
_, err = bus.Subscribe([]interface{}{new(EventB), 5})
|
|
if err == nil || err.Error() != "subscribe called with non-pointer type" {
|
|
t.Fatal(err)
|
|
}
|
|
|
|
done := make(chan struct{})
|
|
go func() {
|
|
defer close(done)
|
|
em.Emit(EventB(159)) // will hang if sub doesn't fail properly
|
|
}()
|
|
|
|
select {
|
|
case <-done:
|
|
case <-time.After(5 * time.Second):
|
|
t.Fatal("timeout")
|
|
}
|
|
}
|
|
|
|
func testMany(t testing.TB, subs, emits, msgs int, stateful bool) {
|
|
if race.WithRace() && subs+emits > 5000 {
|
|
t.SkipNow()
|
|
}
|
|
|
|
bus := NewBus()
|
|
|
|
var r atomic.Int64
|
|
|
|
var wait sync.WaitGroup
|
|
var ready sync.WaitGroup
|
|
wait.Add(subs + emits)
|
|
ready.Add(subs)
|
|
|
|
for i := 0; i < subs; i++ {
|
|
go func() {
|
|
sub, err := bus.Subscribe(new(EventB))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer sub.Close()
|
|
|
|
ready.Done()
|
|
for i := 0; i < emits*msgs; i++ {
|
|
e, ok := <-sub.Out()
|
|
if !ok {
|
|
panic("wat")
|
|
}
|
|
r.Add(int64(e.(EventB)))
|
|
}
|
|
wait.Done()
|
|
}()
|
|
}
|
|
|
|
for i := 0; i < emits; i++ {
|
|
go func() {
|
|
em, err := bus.Emitter(new(EventB), func(settings interface{}) error {
|
|
settings.(*emitterSettings).makeStateful = stateful
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
ready.Wait()
|
|
|
|
for i := 0; i < msgs; i++ {
|
|
em.Emit(EventB(97))
|
|
}
|
|
|
|
wait.Done()
|
|
}()
|
|
}
|
|
|
|
wait.Wait()
|
|
|
|
if int(r.Load()) != 97*subs*emits*msgs {
|
|
t.Fatal("got wrong result")
|
|
}
|
|
}
|
|
|
|
func TestBothMany(t *testing.T) {
|
|
testMany(t, 10000, 100, 10, false)
|
|
}
|
|
|
|
type benchCase struct {
|
|
subs int
|
|
emits int
|
|
stateful bool
|
|
}
|
|
|
|
func (bc benchCase) name() string {
|
|
return fmt.Sprintf("subs-%03d/emits-%03d/stateful-%t", bc.subs, bc.emits, bc.stateful)
|
|
}
|
|
|
|
func genTestCases() []benchCase {
|
|
ret := make([]benchCase, 0, 200)
|
|
for stateful := 0; stateful < 2; stateful++ {
|
|
for subs := uint(0); subs <= 8; subs = subs + 4 {
|
|
for emits := uint(0); emits <= 8; emits = emits + 4 {
|
|
ret = append(ret, benchCase{1 << subs, 1 << emits, stateful == 1})
|
|
}
|
|
}
|
|
}
|
|
return ret
|
|
}
|
|
|
|
func BenchmarkEvents(b *testing.B) {
|
|
for _, bc := range genTestCases() {
|
|
b.Run(bc.name(), benchMany(bc))
|
|
}
|
|
}
|
|
|
|
func benchMany(bc benchCase) func(*testing.B) {
|
|
return func(b *testing.B) {
|
|
b.ReportAllocs()
|
|
subs := bc.subs
|
|
emits := bc.emits
|
|
stateful := bc.stateful
|
|
bus := NewBus()
|
|
var wait sync.WaitGroup
|
|
var ready sync.WaitGroup
|
|
wait.Add(subs + emits)
|
|
ready.Add(subs + emits)
|
|
|
|
for i := 0; i < subs; i++ {
|
|
go func() {
|
|
sub, err := bus.Subscribe(new(EventB))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer sub.Close()
|
|
|
|
ready.Done()
|
|
ready.Wait()
|
|
for i := 0; i < (b.N/emits)*emits; i++ {
|
|
_, ok := <-sub.Out()
|
|
if !ok {
|
|
panic("wat")
|
|
}
|
|
}
|
|
wait.Done()
|
|
}()
|
|
}
|
|
|
|
for i := 0; i < emits; i++ {
|
|
go func() {
|
|
em, err := bus.Emitter(new(EventB), func(settings interface{}) error {
|
|
settings.(*emitterSettings).makeStateful = stateful
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer em.Close()
|
|
|
|
ready.Done()
|
|
ready.Wait()
|
|
|
|
for i := 0; i < b.N/emits; i++ {
|
|
em.Emit(EventB(97))
|
|
}
|
|
|
|
wait.Done()
|
|
}()
|
|
}
|
|
ready.Wait()
|
|
b.ResetTimer()
|
|
wait.Wait()
|
|
}
|
|
}
|
|
|
|
var div = 100
|
|
|
|
func BenchmarkSubscribe(b *testing.B) {
|
|
b.ReportAllocs()
|
|
for i := 0; i < b.N/div; i++ {
|
|
bus := NewBus()
|
|
for j := 0; j < div; j++ {
|
|
bus.Subscribe(new(EventA))
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkEmitter(b *testing.B) {
|
|
b.ReportAllocs()
|
|
for i := 0; i < b.N/div; i++ {
|
|
bus := NewBus()
|
|
for j := 0; j < div; j++ {
|
|
bus.Emitter(new(EventA))
|
|
}
|
|
}
|
|
}
|
|
|
|
func BenchmarkSubscribeAndEmitter(b *testing.B) {
|
|
b.ReportAllocs()
|
|
for i := 0; i < b.N/div; i++ {
|
|
bus := NewBus()
|
|
for j := 0; j < div; j++ {
|
|
bus.Subscribe(new(EventA))
|
|
bus.Emitter(new(EventA))
|
|
}
|
|
}
|
|
}
|