private void InitAvailableServerCountMetric(LoadBalancerRoute route)
        {
            var metricId   = _loadBalancerContext.GetMetricId(route.RouteId + "." + ServerAvailableCountMetricSuffix);
            var metricName = _loadBalancerContext.GetMetricName(ServerAvailableCountMetricSuffix);
            Dictionary <string, string> metadata = new Dictionary <string, string>();

            metadata["metric_name_audit"] = metricName;
            metadata["loadbalancerid"]    = _loadBalancerContext.LoadBalancerId;
            metadata["routeid"]           = route.RouteId;
            var metricConfig = new StatusMetricConfig <double>(() => route.AvailableServers.Length, metadata);

            _availableServerCountMetrics.GetOrAdd(route.RouteId, key => _statusMetricManager.GetMetric(metricId, metricConfig));
        }
 public IStatusMetric <T> GetMetric(string metricId, StatusMetricConfig <T> metricConfig)
 {
     return(NullStatusMetric <T> .Instance);
 }