func afterNewBeatReactor()

in pkg/rules/nacos/dom/nacos_go_client_dom_setup.go [46:85]
40 lines of code
5 McCabe index (conditional complexity)

func afterNewBeatReactor(call api.CallContext, b naming_http.BeatReactor) {
	if !experimental.NacosEnabler.Enable() {
		return
	}
	t := reflect.ValueOf(&b).Elem()
	beatMapField := t.FieldByName("beatMap")
	if beatMapField.IsValid() {
		bf := reflect.NewAt(beatMapField.Type(), unsafe.Pointer(beatMapField.UnsafeAddr())).Elem()
		beatMap, ok := bf.Interface().(cache.ConcurrentMap)
		if !ok {
			return
		}
		attrSet := attribute.NewSet(attribute.KeyValue{
			Key:   "namespace",
			Value: attribute.StringValue(call.GetKeyData("namespace").(string)),
		}, attribute.KeyValue{
			Key:   "region",
			Value: attribute.StringValue(call.GetKeyData("region").(string)),
		}, attribute.KeyValue{
			Key:   "appName",
			Value: attribute.StringValue(call.GetKeyData("appName").(string)),
		}, attribute.KeyValue{
			Key:   "appKey",
			Value: attribute.StringValue(call.GetKeyData("appKey").(string)),
		}, attribute.KeyValue{
			Key:   "userName",
			Value: attribute.StringValue(call.GetKeyData("userName").(string)),
		})
		reg, err := experimental.GlobalMeter.RegisterCallback(func(ctx context.Context, observer metric.Observer) error {
			observer.ObserveInt64(experimental.ClientDomBeatMapSize, int64(beatMap.Count()), metric.WithAttributeSet(attrSet))
			return nil
		}, experimental.ClientDomBeatMapSize)
		if err != nil {
			log.Printf("[otel nacos] failed to register metrics for beat map, %v\n", err)
		} else {
			b.OtelReg = reg
			call.SetReturnVal(0, b)
		}
	}
}