406 lines
9.5 KiB
Go
406 lines
9.5 KiB
Go
package stats_test
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
"testing"
|
|
"time"
|
|
|
|
. "github.com/xtls/xray-core/v1/app/stats"
|
|
"github.com/xtls/xray-core/v1/common"
|
|
"github.com/xtls/xray-core/v1/features/stats"
|
|
)
|
|
|
|
func TestStatsChannel(t *testing.T) {
|
|
// At most 2 subscribers could be registered
|
|
c := NewChannel(&ChannelConfig{SubscriberLimit: 2, Blocking: true})
|
|
|
|
a, err := stats.SubscribeRunnableChannel(c)
|
|
common.Must(err)
|
|
if !c.Running() {
|
|
t.Fatal("unexpected failure in running channel after first subscription")
|
|
}
|
|
|
|
b, err := c.Subscribe()
|
|
common.Must(err)
|
|
|
|
// Test that third subscriber is forbidden
|
|
_, err = c.Subscribe()
|
|
if err == nil {
|
|
t.Fatal("unexpected successful subscription")
|
|
}
|
|
t.Log("expected error: ", err)
|
|
|
|
stopCh := make(chan struct{})
|
|
errCh := make(chan string)
|
|
|
|
go func() {
|
|
c.Publish(context.Background(), 1)
|
|
c.Publish(context.Background(), 2)
|
|
c.Publish(context.Background(), "3")
|
|
c.Publish(context.Background(), []int{4})
|
|
stopCh <- struct{}{}
|
|
}()
|
|
|
|
go func() {
|
|
if v, ok := (<-a).(int); !ok || v != 1 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 1)
|
|
}
|
|
if v, ok := (<-a).(int); !ok || v != 2 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 2)
|
|
}
|
|
if v, ok := (<-a).(string); !ok || v != "3" {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", "3")
|
|
}
|
|
if v, ok := (<-a).([]int); !ok || v[0] != 4 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", []int{4})
|
|
}
|
|
stopCh <- struct{}{}
|
|
}()
|
|
|
|
go func() {
|
|
if v, ok := (<-b).(int); !ok || v != 1 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 1)
|
|
}
|
|
if v, ok := (<-b).(int); !ok || v != 2 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 2)
|
|
}
|
|
if v, ok := (<-b).(string); !ok || v != "3" {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", "3")
|
|
}
|
|
if v, ok := (<-b).([]int); !ok || v[0] != 4 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", []int{4})
|
|
}
|
|
stopCh <- struct{}{}
|
|
}()
|
|
|
|
timeout := time.After(2 * time.Second)
|
|
for i := 0; i < 3; i++ {
|
|
select {
|
|
case <-timeout:
|
|
t.Fatal("Test timeout after 2s")
|
|
case e := <-errCh:
|
|
t.Fatal(e)
|
|
case <-stopCh:
|
|
}
|
|
}
|
|
|
|
// Test the unsubscription of channel
|
|
common.Must(c.Unsubscribe(b))
|
|
|
|
// Test the last subscriber will close channel with `UnsubscribeClosableChannel`
|
|
common.Must(stats.UnsubscribeClosableChannel(c, a))
|
|
if c.Running() {
|
|
t.Fatal("unexpected running channel after unsubscribing the last subscriber")
|
|
}
|
|
}
|
|
|
|
func TestStatsChannelUnsubcribe(t *testing.T) {
|
|
c := NewChannel(&ChannelConfig{Blocking: true})
|
|
common.Must(c.Start())
|
|
defer c.Close()
|
|
|
|
a, err := c.Subscribe()
|
|
common.Must(err)
|
|
defer c.Unsubscribe(a)
|
|
|
|
b, err := c.Subscribe()
|
|
common.Must(err)
|
|
|
|
pauseCh := make(chan struct{})
|
|
stopCh := make(chan struct{})
|
|
errCh := make(chan string)
|
|
|
|
{
|
|
var aSet, bSet bool
|
|
for _, s := range c.Subscribers() {
|
|
if s == a {
|
|
aSet = true
|
|
}
|
|
if s == b {
|
|
bSet = true
|
|
}
|
|
}
|
|
if !(aSet && bSet) {
|
|
t.Fatal("unexpected subscribers: ", c.Subscribers())
|
|
}
|
|
}
|
|
|
|
go func() { // Blocking publish
|
|
c.Publish(context.Background(), 1)
|
|
<-pauseCh // Wait for `b` goroutine to resume sending message
|
|
c.Publish(context.Background(), 2)
|
|
}()
|
|
|
|
go func() {
|
|
if v, ok := (<-a).(int); !ok || v != 1 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 1)
|
|
}
|
|
if v, ok := (<-a).(int); !ok || v != 2 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 2)
|
|
}
|
|
}()
|
|
|
|
go func() {
|
|
if v, ok := (<-b).(int); !ok || v != 1 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 1)
|
|
}
|
|
// Unsubscribe `b` while publishing is paused
|
|
c.Unsubscribe(b)
|
|
{ // Test `b` is not in subscribers
|
|
var aSet, bSet bool
|
|
for _, s := range c.Subscribers() {
|
|
if s == a {
|
|
aSet = true
|
|
}
|
|
if s == b {
|
|
bSet = true
|
|
}
|
|
}
|
|
if !(aSet && !bSet) {
|
|
errCh <- fmt.Sprint("unexpected subscribers: ", c.Subscribers())
|
|
}
|
|
}
|
|
// Resume publishing progress
|
|
close(pauseCh)
|
|
// Test `b` is neither closed nor able to receive any data
|
|
select {
|
|
case v, ok := <-b:
|
|
if ok {
|
|
errCh <- fmt.Sprint("unexpected data received: ", v)
|
|
} else {
|
|
errCh <- fmt.Sprint("unexpected closed channel: ", b)
|
|
}
|
|
default:
|
|
}
|
|
close(stopCh)
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Test timeout after 2s")
|
|
case e := <-errCh:
|
|
t.Fatal(e)
|
|
case <-stopCh:
|
|
}
|
|
}
|
|
|
|
func TestStatsChannelBlocking(t *testing.T) {
|
|
// Do not use buffer so as to create blocking scenario
|
|
c := NewChannel(&ChannelConfig{BufferSize: 0, Blocking: true})
|
|
common.Must(c.Start())
|
|
defer c.Close()
|
|
|
|
a, err := c.Subscribe()
|
|
common.Must(err)
|
|
defer c.Unsubscribe(a)
|
|
|
|
pauseCh := make(chan struct{})
|
|
stopCh := make(chan struct{})
|
|
errCh := make(chan string)
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
|
|
// Test blocking channel publishing
|
|
go func() {
|
|
// Dummy messsage with no subscriber receiving, will block broadcasting goroutine
|
|
c.Publish(context.Background(), nil)
|
|
|
|
<-pauseCh
|
|
|
|
// Publishing should be blocked here, for last message was not cleared and buffer was full
|
|
c.Publish(context.Background(), nil)
|
|
|
|
pauseCh <- struct{}{}
|
|
|
|
// Publishing should still be blocked here
|
|
c.Publish(ctx, nil)
|
|
|
|
// Check publishing is done because context is canceled
|
|
select {
|
|
case <-ctx.Done():
|
|
if ctx.Err() != context.Canceled {
|
|
errCh <- fmt.Sprint("unexpected error: ", ctx.Err())
|
|
}
|
|
default:
|
|
errCh <- "unexpected non-blocked publishing"
|
|
}
|
|
close(stopCh)
|
|
}()
|
|
|
|
go func() {
|
|
pauseCh <- struct{}{}
|
|
|
|
select {
|
|
case <-pauseCh:
|
|
errCh <- "unexpected non-blocked publishing"
|
|
case <-time.After(100 * time.Millisecond):
|
|
}
|
|
|
|
// Receive first published message
|
|
<-a
|
|
|
|
select {
|
|
case <-pauseCh:
|
|
case <-time.After(100 * time.Millisecond):
|
|
errCh <- "unexpected blocking publishing"
|
|
}
|
|
|
|
// Manually cancel the context to end publishing
|
|
cancel()
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Test timeout after 2s")
|
|
case e := <-errCh:
|
|
t.Fatal(e)
|
|
case <-stopCh:
|
|
}
|
|
}
|
|
|
|
func TestStatsChannelNonBlocking(t *testing.T) {
|
|
// Do not use buffer so as to create blocking scenario
|
|
c := NewChannel(&ChannelConfig{BufferSize: 0, Blocking: false})
|
|
common.Must(c.Start())
|
|
defer c.Close()
|
|
|
|
a, err := c.Subscribe()
|
|
common.Must(err)
|
|
defer c.Unsubscribe(a)
|
|
|
|
pauseCh := make(chan struct{})
|
|
stopCh := make(chan struct{})
|
|
errCh := make(chan string)
|
|
|
|
ctx, cancel := context.WithCancel(context.Background())
|
|
|
|
// Test blocking channel publishing
|
|
go func() {
|
|
c.Publish(context.Background(), nil)
|
|
c.Publish(context.Background(), nil)
|
|
pauseCh <- struct{}{}
|
|
<-pauseCh
|
|
c.Publish(ctx, nil)
|
|
c.Publish(ctx, nil)
|
|
// Check publishing is done because context is canceled
|
|
select {
|
|
case <-ctx.Done():
|
|
if ctx.Err() != context.Canceled {
|
|
errCh <- fmt.Sprint("unexpected error: ", ctx.Err())
|
|
}
|
|
case <-time.After(100 * time.Millisecond):
|
|
errCh <- "unexpected non-cancelled publishing"
|
|
}
|
|
}()
|
|
|
|
go func() {
|
|
// Check publishing won't block even if there is no subscriber receiving message
|
|
select {
|
|
case <-pauseCh:
|
|
case <-time.After(100 * time.Millisecond):
|
|
errCh <- "unexpected blocking publishing"
|
|
}
|
|
|
|
// Receive first and second published message
|
|
<-a
|
|
<-a
|
|
|
|
pauseCh <- struct{}{}
|
|
|
|
// Manually cancel the context to end publishing
|
|
cancel()
|
|
|
|
// Check third and forth published message is cancelled and cannot receive
|
|
<-time.After(100 * time.Millisecond)
|
|
select {
|
|
case <-a:
|
|
errCh <- "unexpected non-cancelled publishing"
|
|
default:
|
|
}
|
|
select {
|
|
case <-a:
|
|
errCh <- "unexpected non-cancelled publishing"
|
|
default:
|
|
}
|
|
close(stopCh)
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Test timeout after 2s")
|
|
case e := <-errCh:
|
|
t.Fatal(e)
|
|
case <-stopCh:
|
|
}
|
|
}
|
|
|
|
func TestStatsChannelConcurrency(t *testing.T) {
|
|
// Do not use buffer so as to create blocking scenario
|
|
c := NewChannel(&ChannelConfig{BufferSize: 0, Blocking: true})
|
|
common.Must(c.Start())
|
|
defer c.Close()
|
|
|
|
a, err := c.Subscribe()
|
|
common.Must(err)
|
|
defer c.Unsubscribe(a)
|
|
|
|
b, err := c.Subscribe()
|
|
common.Must(err)
|
|
defer c.Unsubscribe(b)
|
|
|
|
stopCh := make(chan struct{})
|
|
errCh := make(chan string)
|
|
|
|
go func() { // Blocking publish
|
|
c.Publish(context.Background(), 1)
|
|
c.Publish(context.Background(), 2)
|
|
}()
|
|
|
|
go func() {
|
|
if v, ok := (<-a).(int); !ok || v != 1 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 1)
|
|
}
|
|
if v, ok := (<-a).(int); !ok || v != 2 {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v, ", wanted ", 2)
|
|
}
|
|
}()
|
|
|
|
go func() {
|
|
// Block `b` for a time so as to ensure source channel is trying to send message to `b`.
|
|
<-time.After(25 * time.Millisecond)
|
|
// This causes concurrency scenario: unsubscribe `b` while trying to send message to it
|
|
c.Unsubscribe(b)
|
|
// Test `b` is not closed and can still receive data 1:
|
|
// Because unsubscribe won't affect the ongoing process of sending message.
|
|
select {
|
|
case v, ok := <-b:
|
|
if v1, ok1 := v.(int); !(ok && ok1 && v1 == 1) {
|
|
errCh <- fmt.Sprint("unexpected failure in receiving data: ", 1)
|
|
}
|
|
default:
|
|
errCh <- fmt.Sprint("unexpected block from receiving data: ", 1)
|
|
}
|
|
// Test `b` is not closed but cannot receive data 2:
|
|
// Because in a new round of messaging, `b` has been unsubscribed.
|
|
select {
|
|
case v, ok := <-b:
|
|
if ok {
|
|
errCh <- fmt.Sprint("unexpected receiving: ", v)
|
|
} else {
|
|
errCh <- "unexpected closing of channel"
|
|
}
|
|
default:
|
|
}
|
|
close(stopCh)
|
|
}()
|
|
|
|
select {
|
|
case <-time.After(2 * time.Second):
|
|
t.Fatal("Test timeout after 2s")
|
|
case e := <-errCh:
|
|
t.Fatal(e)
|
|
case <-stopCh:
|
|
}
|
|
}
|