avoid limits on the number of parallel trace/bucket notifications listeners (#14799)

Simplifies overall limits on the incoming listeners for notifications.

Fixes #14566
This commit is contained in:
Anis Elleuch
2022-06-05 22:29:12 +01:00
committed by GitHub
parent addfa35d93
commit fd02492cb7
8 changed files with 113 additions and 38 deletions

View File

@@ -24,68 +24,100 @@ import (
)
func TestSubscribe(t *testing.T) {
ps := New()
ps := New(2)
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
doneCh := make(chan struct{})
defer close(doneCh)
ps.Subscribe(ch1, doneCh, nil)
ps.Subscribe(ch2, doneCh, nil)
if err := ps.Subscribe(ch1, doneCh, nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
if err := ps.Subscribe(ch2, doneCh, nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
ps.Lock()
defer ps.Unlock()
if len(ps.subs) != 2 {
t.Errorf("expected 2 subscribers")
t.Fatalf("expected 2 subscribers")
}
}
func TestSubscribeExceedingLimit(t *testing.T) {
ps := New(2)
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
ch3 := make(chan interface{}, 1)
doneCh := make(chan struct{})
defer close(doneCh)
if err := ps.Subscribe(ch1, doneCh, nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
if err := ps.Subscribe(ch2, doneCh, nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
if err := ps.Subscribe(ch3, doneCh, nil); err == nil {
t.Fatalf("unexpected nil err")
}
}
func TestUnsubscribe(t *testing.T) {
ps := New()
ps := New(2)
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
doneCh1 := make(chan struct{})
doneCh2 := make(chan struct{})
ps.Subscribe(ch1, doneCh1, nil)
ps.Subscribe(ch2, doneCh2, nil)
if err := ps.Subscribe(ch1, doneCh1, nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
if err := ps.Subscribe(ch2, doneCh2, nil); err != nil {
t.Fatalf("unexpected error: %v", err)
}
close(doneCh1)
// Allow for the above statement to take effect.
time.Sleep(100 * time.Millisecond)
ps.Lock()
if len(ps.subs) != 1 {
t.Errorf("expected 1 subscriber")
t.Fatal("expected 1 subscriber")
}
ps.Unlock()
close(doneCh2)
}
func TestPubSub(t *testing.T) {
ps := New()
ps := New(1)
ch1 := make(chan interface{}, 1)
doneCh1 := make(chan struct{})
defer close(doneCh1)
ps.Subscribe(ch1, doneCh1, func(entry interface{}) bool { return true })
if err := ps.Subscribe(ch1, doneCh1, func(entry interface{}) bool { return true }); err != nil {
t.Fatalf("unexpected error: %v", err)
}
val := "hello"
ps.Publish(val)
msg := <-ch1
if msg != "hello" {
t.Errorf(fmt.Sprintf("expected %s , found %s", val, msg))
t.Fatalf(fmt.Sprintf("expected %s , found %s", val, msg))
}
}
func TestMultiPubSub(t *testing.T) {
ps := New()
ps := New(2)
ch1 := make(chan interface{}, 1)
ch2 := make(chan interface{}, 1)
doneCh := make(chan struct{})
defer close(doneCh)
ps.Subscribe(ch1, doneCh, func(entry interface{}) bool { return true })
ps.Subscribe(ch2, doneCh, func(entry interface{}) bool { return true })
if err := ps.Subscribe(ch1, doneCh, func(entry interface{}) bool { return true }); err != nil {
t.Fatalf("unexpected error: %v", err)
}
if err := ps.Subscribe(ch2, doneCh, func(entry interface{}) bool { return true }); err != nil {
t.Fatalf("unexpected error: %v", err)
}
val := "hello"
ps.Publish(val)
msg1 := <-ch1
msg2 := <-ch2
if msg1 != "hello" && msg2 != "hello" {
t.Errorf(fmt.Sprintf("expected both subscribers to have%s , found %s and %s", val, msg1, msg2))
t.Fatalf(fmt.Sprintf("expected both subscribers to have%s , found %s and %s", val, msg1, msg2))
}
}