add traffic reset for stats

handler/socks/v4/handler.go

@@ -14,6 +14,7 @@ import (
 	"github.com/go-gost/core/limiter/traffic"
 	"github.com/go-gost/core/logger"
 	md "github.com/go-gost/core/metadata"
+	"github.com/go-gost/core/observer"
 	"github.com/go-gost/core/observer/stats"
 	"github.com/go-gost/core/recorder"
 	"github.com/go-gost/gosocks4"
@@ -25,6 +26,7 @@ import (
 	tls_util "github.com/go-gost/x/internal/util/tls"
 	rate_limiter "github.com/go-gost/x/limiter/rate"
 	traffic_wrapper "github.com/go-gost/x/limiter/traffic/wrapper"
+	xstats "github.com/go-gost/x/observer/stats"
 	stats_wrapper "github.com/go-gost/x/observer/stats/wrapper"
 	xrecorder "github.com/go-gost/x/recorder"
 	"github.com/go-gost/x/registry"
@@ -70,7 +72,7 @@ func (h *socks4Handler) Init(md md.Metadata) (err error) {
 	h.cancel = cancel
 
 	if h.options.Observer != nil {
-		h.stats = stats_util.NewHandlerStats(h.options.Service)
+		h.stats = stats_util.NewHandlerStats(h.options.Service, h.md.observerResetTraffic)
 		go h.observeStats(ctx)
 	}
 
@@ -122,7 +124,7 @@ func (h *socks4Handler) Handle(ctx context.Context, conn net.Conn, opts ...handl
 	})
 	log.Infof("%s <> %s", conn.RemoteAddr(), conn.LocalAddr())
 
-	pStats := stats.Stats{}
+	pStats := xstats.Stats{}
 	conn = stats_wrapper.WrapConn(conn, &pStats)
 
 	defer func() {
@@ -338,13 +340,26 @@ func (h *socks4Handler) observeStats(ctx context.Context) {
 		return
 	}
 
-	ticker := time.NewTicker(h.md.observePeriod)
+	var events []observer.Event
+
+	ticker := time.NewTicker(h.md.observerPeriod)
 	defer ticker.Stop()
 
 	for {
 		select {
 		case <-ticker.C:
-			h.options.Observer.Observe(ctx, h.stats.Events())
+			if len(events) > 0 {
+				if err := h.options.Observer.Observe(ctx, events); err == nil {
+					events = nil
+				}
+				break
+			}
+
+			evs := h.stats.Events()
+			if err := h.options.Observer.Observe(ctx, evs); err != nil {
+				events = evs
+			}
+
 		case <-ctx.Done():
 			return
 		}

handler/socks/v4/metadata.go

@@ -15,9 +15,11 @@ import (
 type metadata struct {
 	readTimeout            time.Duration
 	hash                   string
-	observePeriod          time.Duration
 	limiterRefreshInterval time.Duration
 
+	observerPeriod       time.Duration
+	observerResetTraffic bool
+
 	sniffing                    bool
 	sniffingTimeout             time.Duration
 	sniffingWebsocket           bool
@@ -37,14 +39,16 @@ func (h *socks4Handler) parseMetadata(md mdata.Metadata) (err error) {
 
 	h.md.hash = mdutil.GetString(md, "hash")
 
-	h.md.observePeriod = mdutil.GetDuration(md, "observePeriod", "observer.observePeriod")
-	if h.md.observePeriod == 0 {
-		h.md.observePeriod = 5 * time.Second
+	h.md.observerPeriod = mdutil.GetDuration(md, "observePeriod", "observer.period", "observer.observePeriod")
+	if h.md.observerPeriod == 0 {
+		h.md.observerPeriod = 5 * time.Second
 	}
-	if h.md.observePeriod < time.Second {
-		h.md.observePeriod = time.Second
+	if h.md.observerPeriod < time.Second {
+		h.md.observerPeriod = time.Second
 	}
 
+	h.md.observerResetTraffic = mdutil.GetBool(md, "observer.resetTraffic")
+
 	h.md.limiterRefreshInterval = mdutil.GetDuration(md, "limiter.refreshInterval")
 	if h.md.limiterRefreshInterval == 0 {
 		h.md.limiterRefreshInterval = 30 * time.Second