add traffic reset for stats

handler/http2/handler.go

@@ -23,6 +23,7 @@ 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"
 	xbypass "github.com/go-gost/x/bypass"
@@ -72,7 +73,7 @@ func (h *http2Handler) Init(md md.Metadata) 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)
 	}
 
@@ -483,13 +484,26 @@ func (h *http2Handler) 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
 		}