healthcheck latency of the provider is also stored in the extra, without compromising rest api compatibility

adapter/adapter.go

@@ -26,21 +26,20 @@ const (
 	defaultHistoriesNum = 10
 )
 
-type extraProxyState struct {
+type internalProxyState struct {
-	history *queue.Queue[C.DelayHistory]
 	alive   atomic.Bool
+	history *queue.Queue[C.DelayHistory]
 }
 
 type Proxy struct {
 	C.ProxyAdapter
 	history *queue.Queue[C.DelayHistory]
 	alive   atomic.Bool
-	url     string
+	extra   *xsync.MapOf[string, *internalProxyState]
-	extra   *xsync.MapOf[string, *extraProxyState]
 }
 
-// AliveForTestUrl implements C.Proxy
+// Alive implements C.Proxy
-func (p *Proxy) AliveForTestUrl(url string) bool {
+func (p *Proxy) Alive(url string) bool {
 	if state, ok := p.extra.Load(url); ok {
 		return state.alive.Load()
 	}
@@ -48,10 +47,6 @@ func (p *Proxy) AliveForTestUrl(url string) bool {
 	return p.alive.Load()
 }
 
-func (p *Proxy) OriginalHealthCheckUrl(url string) {
-	p.url = url
-}
-
 // Dial implements C.Proxy
 func (p *Proxy) Dial(metadata *C.Metadata) (C.Conn, error) {
 	ctx, cancel := context.WithTimeout(context.Background(), C.DefaultTCPTimeout)
@@ -81,7 +76,7 @@ func (p *Proxy) ListenPacketContext(ctx context.Context, metadata *C.Metadata, o
 // DelayHistory implements C.Proxy
 func (p *Proxy) DelayHistory() []C.DelayHistory {
 	queueM := p.history.Copy()
-	histories := []C.DelayHistory{}
+	var histories []C.DelayHistory
 	for _, item := range queueM {
 		histories = append(histories, item)
 	}
@@ -97,71 +92,52 @@ func (p *Proxy) DelayHistoryForTestUrl(url string) []C.DelayHistory {
 		queueM = state.history.Copy()
 	}
 
-	if queueM == nil {
+	var histories []C.DelayHistory
-		queueM = p.history.Copy()
-	}
-
-	histories := []C.DelayHistory{}
 	for _, item := range queueM {
 		histories = append(histories, item)
 	}
 	return histories
 }
 
-func (p *Proxy) ExtraDelayHistory() map[string][]C.DelayHistory {
+// ExtraDelayHistories return all delay histories for each test URL
-	extraHistory := map[string][]C.DelayHistory{}
+// implements C.Proxy
-
+func (p *Proxy) ExtraDelayHistories() map[string]C.ProxyState {
-	p.extra.Range(func(k string, v *extraProxyState) bool {
+	histories := map[string]C.ProxyState{}
 
+	p.extra.Range(func(k string, v *internalProxyState) bool {
 		testUrl := k
 		state := v
 
-		histories := []C.DelayHistory{}
 		queueM := state.history.Copy()
+		var history []C.DelayHistory
 
 		for _, item := range queueM {
-			histories = append(histories, item)
+			history = append(history, item)
 		}
 
-		extraHistory[testUrl] = histories
+		histories[testUrl] = C.ProxyState{
-
+			Alive:   state.alive.Load(),
+			History: history,
+		}
 		return true
 	})
-	return extraHistory
+	return histories
 }
 
-// LastDelay return last history record. if proxy is not alive, return the max value of uint16.
+// LastDelayForTestUrl return last history record of the specified URL. if proxy is not alive, return the max value of uint16.
 // implements C.Proxy
-func (p *Proxy) LastDelay() (delay uint16) {
-	var max uint16 = 0xffff
-	if !p.alive.Load() {
-		return max
-	}
-
-	history := p.history.Last()
-	if history.Delay == 0 {
-		return max
-	}
-	return history.Delay
-}
-
-// LastDelayForTestUrl implements C.Proxy
 func (p *Proxy) LastDelayForTestUrl(url string) (delay uint16) {
 	var max uint16 = 0xffff
 
-	alive := p.alive.Load()
+	alive := false
-	history := p.history.Last()
+	var history C.DelayHistory
 
 	if state, ok := p.extra.Load(url); ok {
 		alive = state.alive.Load()
 		history = state.history.Last()
 	}
 
-	if !alive {
+	if !alive || history.Delay == 0 {
-		return max
-	}
-
-	if history.Delay == 0 {
 		return max
 	}
 	return history.Delay
@@ -177,8 +153,8 @@ func (p *Proxy) MarshalJSON() ([]byte, error) {
 	mapping := map[string]any{}
 	_ = json.Unmarshal(inner, &mapping)
 	mapping["history"] = p.DelayHistory()
-	mapping["extra"] = p.ExtraDelayHistory()
+	mapping["extra"] = p.ExtraDelayHistories()
-	mapping["alive"] = p.AliveForTestUrl(p.url)
+	mapping["alive"] = p.alive.Load()
 	mapping["name"] = p.Name()
 	mapping["udp"] = p.SupportUDP()
 	mapping["xudp"] = p.SupportXUDP()
@@ -191,31 +167,20 @@ func (p *Proxy) MarshalJSON() ([]byte, error) {
 func (p *Proxy) URLTest(ctx context.Context, url string, expectedStatus utils.IntRanges[uint16]) (t uint16, err error) {
 	defer func() {
 		alive := err == nil
-
-		if len(p.url) == 0 || url == p.url {
-			p.alive.Store(alive)
 		record := C.DelayHistory{Time: time.Now()}
 		if alive {
 			record.Delay = t
 		}
+
+		p.alive.Store(alive)
 		p.history.Put(record)
 		if p.history.Len() > defaultHistoriesNum {
 			p.history.Pop()
 		}
 
-			// test URL configured by the proxy provider
-			if len(p.url) == 0 {
-				p.url = url
-			}
-		} else {
-			record := C.DelayHistory{Time: time.Now()}
-			if alive {
-				record.Delay = t
-			}
-
 		state, ok := p.extra.Load(url)
 		if !ok {
-				state = &extraProxyState{
+			state = &internalProxyState{
 				history: queue.New[C.DelayHistory](defaultHistoriesNum),
 				alive:   atomic.NewBool(true),
 			}
@@ -227,7 +192,7 @@ func (p *Proxy) URLTest(ctx context.Context, url string, expectedStatus utils.In
 		if state.history.Len() > defaultHistoriesNum {
 			state.history.Pop()
 		}
-		}
+
 	}()
 
 	unifiedDelay := UnifiedDelay.Load()
@@ -304,8 +269,7 @@ func NewProxy(adapter C.ProxyAdapter) *Proxy {
 		ProxyAdapter: adapter,
 		history:      queue.New[C.DelayHistory](defaultHistoriesNum),
 		alive:        atomic.NewBool(true),
-		url:          "",
+		extra:        xsync.NewMapOf[string, *internalProxyState]()}
-		extra:        xsync.NewMapOf[string, *extraProxyState]()}
 }
 
 func urlToMetadata(rawURL string) (addr C.Metadata, err error) {

adapter/outboundgroup/fallback.go

@@ -102,12 +102,12 @@ func (f *Fallback) findAliveProxy(touch bool) C.Proxy {
 	proxies := f.GetProxies(touch)
 	for _, proxy := range proxies {
 		if len(f.selected) == 0 {
-			if proxy.AliveForTestUrl(f.testUrl) {
+			if proxy.Alive(f.testUrl) {
 				return proxy
 			}
 		} else {
 			if proxy.Name() == f.selected {
-				if proxy.AliveForTestUrl(f.testUrl) {
+				if proxy.Alive(f.testUrl) {
 					return proxy
 				} else {
 					f.selected = ""
@@ -133,7 +133,7 @@ func (f *Fallback) Set(name string) error {
 	}
 
 	f.selected = name
-	if !p.AliveForTestUrl(f.testUrl) {
+	if !p.Alive(f.testUrl) {
 		ctx, cancel := context.WithTimeout(context.Background(), time.Millisecond*time.Duration(5000))
 		defer cancel()
 		expectedStatus, _ := utils.NewIntRanges[uint16](f.expectedStatus)

adapter/outboundgroup/loadbalance.go

@@ -150,8 +150,7 @@ func strategyRoundRobin(url string) strategyFn {
 		for ; i < length; i++ {
 			id := (idx + i) % length
 			proxy := proxies[id]
-			// if proxy.Alive() {
+			if proxy.Alive(url) {
-			if proxy.AliveForTestUrl(url) {
 				i++
 				return proxy
 			}
@@ -169,16 +168,14 @@ func strategyConsistentHashing(url string) strategyFn {
 		for i := 0; i < maxRetry; i, key = i+1, key+1 {
 			idx := jumpHash(key, buckets)
 			proxy := proxies[idx]
-			// if proxy.Alive() {
+			if proxy.Alive(url) {
-			if proxy.AliveForTestUrl(url) {
 				return proxy
 			}
 		}
 
 		// when availability is poor, traverse the entire list to get the available nodes
 		for _, proxy := range proxies {
-			// if proxy.Alive() {
+			if proxy.Alive(url) {
-			if proxy.AliveForTestUrl(url) {
 				return proxy
 			}
 		}
@@ -204,8 +201,7 @@ func strategyStickySessions(url string) strategyFn {
 		nowIdx := idx
 		for i := 1; i < maxRetry; i++ {
 			proxy := proxies[nowIdx]
-			// if proxy.Alive() {
+			if proxy.Alive(url) {
-			if proxy.AliveForTestUrl(url) {
 				if nowIdx != idx {
 					lruCache.Delete(key)
 					lruCache.Set(key, nowIdx)

adapter/outboundgroup/urltest.go

@@ -101,7 +101,7 @@ func (u *URLTest) fast(touch bool) C.Proxy {
 	proxies := u.GetProxies(touch)
 	if u.selected != "" {
 		for _, proxy := range proxies {
-			if !proxy.AliveForTestUrl(u.testUrl) {
+			if !proxy.Alive(u.testUrl) {
 				continue
 			}
 			if proxy.Name() == u.selected {
@@ -121,7 +121,7 @@ func (u *URLTest) fast(touch bool) C.Proxy {
 				fastNotExist = false
 			}
 
-			if !proxy.AliveForTestUrl(u.testUrl) {
+			if !proxy.Alive(u.testUrl) {
 				continue
 			}
 
@@ -133,7 +133,7 @@ func (u *URLTest) fast(touch bool) C.Proxy {
 
 		}
 		// tolerance
-		if u.fastNode == nil || fastNotExist || !u.fastNode.AliveForTestUrl(u.testUrl) || u.fastNode.LastDelayForTestUrl(u.testUrl) > fast.LastDelayForTestUrl(u.testUrl)+u.tolerance {
+		if u.fastNode == nil || fastNotExist || !u.fastNode.Alive(u.testUrl) || u.fastNode.LastDelayForTestUrl(u.testUrl) > fast.LastDelayForTestUrl(u.testUrl)+u.tolerance {
 			u.fastNode = fast
 		}
 		return u.fastNode, nil

adapter/provider/healthcheck.go

@@ -202,7 +202,7 @@ func (hc *HealthCheck) execute(b *batch.Batch[bool], url, uid string, option *ex
 			defer cancel()
 			log.Debugln("Health Checking, proxy: %s, url: %s, id: {%s}", p.Name(), url, uid)
 			_, _ = p.URLTest(ctx, url, expectedStatus)
-			log.Debugln("Health Checked, proxy: %s, url: %s, alive: %t, delay: %d ms uid: {%s}", p.Name(), url, p.AliveForTestUrl(url), p.LastDelayForTestUrl(url), uid)
+			log.Debugln("Health Checked, proxy: %s, url: %s, alive: %t, delay: %d ms uid: {%s}", p.Name(), url, p.Alive(url), p.LastDelayForTestUrl(url), uid)
 			return false, nil
 		})
 	}

adapter/provider/provider.go

@@ -114,10 +114,6 @@ func (pp *proxySetProvider) RegisterHealthCheckTask(url string, expectedStatus u
 
 func (pp *proxySetProvider) setProxies(proxies []C.Proxy) {
 	pp.proxies = proxies
-	for _, proxy := range pp.proxies {
-		proxy.OriginalHealthCheckUrl(pp.healthCheck.url)
-	}
-
 	pp.healthCheck.setProxy(proxies)
 	if pp.healthCheck.auto() {
 		go pp.healthCheck.check()

constant/adapters.go

@@ -147,15 +147,19 @@ type DelayHistory struct {
 	Delay uint16    `json:"delay"`
 }
 
+type ProxyState struct {
+	Alive   bool           `json:"alive"`
+	History []DelayHistory `json:"history"`
+}
+
 type DelayHistoryStoreType int
 
 type Proxy interface {
 	ProxyAdapter
-	AliveForTestUrl(url string) bool
+	Alive(url string) bool
 	DelayHistory() []DelayHistory
-	ExtraDelayHistory() map[string][]DelayHistory
+	ExtraDelayHistories() map[string]ProxyState
 	LastDelayForTestUrl(url string) uint16
-	OriginalHealthCheckUrl(url string)
 	URLTest(ctx context.Context, url string, expectedStatus utils.IntRanges[uint16]) (uint16, error)
 
 	// Deprecated: use DialContext instead.