Update pool-server.go

cmd/cart/pool-server.go

@@ -459,8 +459,10 @@ func (s *PoolServer) ProxyHandler(fn func(w http.ResponseWriter, r *http.Request
 		if ownerHost, ok := s.OwnerHost(uint64(cartId)); ok {
 			ctx, span := tracer.Start(r.Context(), "proxy")
 			defer span.End()
+			span.SetAttributes(attribute.String("cartid", cartId.String()))
 			hostAttr := attribute.String("other host", ownerHost.Name())
 			span.SetAttributes(hostAttr)
+			logger.InfoContext(ctx, "cart proxyed", "result", ownerHost.Name())
 			proxyCalls.Add(ctx, 1, metric.WithAttributes(hostAttr))
 			handled, err := ownerHost.Proxy(uint64(cartId), w, r)
 
@@ -470,6 +472,7 @@ func (s *PoolServer) ProxyHandler(fn func(w http.ResponseWriter, r *http.Request
 			}
 		}
 		_, span := tracer.Start(r.Context(), "own")
+		span.SetAttributes(attribute.String("cartid", cartId.String()))
 		defer span.End()
 		return fn(w, r, cartId)
 
@@ -486,6 +489,17 @@ var (
 // rollCnt metric.Int64Counter
 )
 
+func init() {
+	var err error
+	proxyCalls, err = meter.Int64Counter("proxy.calls",
+		metric.WithDescription("The number of rolls by roll value"),
+		metric.WithUnit("{roll}"))
+	if err != nil {
+		panic(err)
+	}
+
+}
+
 type AddVoucherRequest struct {
 	VoucherCode string `json:"code"`
 }