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
 		}

handler/http2/metadata.go

@@ -18,7 +18,8 @@ type metadata struct {
 	header                 http.Header
 	hash                   string
 	authBasicRealm         string
-	observePeriod          time.Duration
+	observerPeriod         time.Duration
+	observerResetTraffic   bool
 	limiterRefreshInterval time.Duration
 }
 
@@ -43,13 +44,14 @@ func (h *http2Handler) parseMetadata(md mdata.Metadata) error {
 	h.md.hash = mdutil.GetString(md, "hash")
 	h.md.authBasicRealm = mdutil.GetString(md, "authBasicRealm")
 
-	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 {