public IEnumerable <MetricEvent> Aggregate(DateTimeOffset timestamp)
{
if (lastEvent == null || !buckets.Any())
{
return(Enumerable.Empty <MetricEvent>());
}
var result = new List <MetricEvent>();
var tags = lastEvent.Tags;
var quantiles = lastEvent.AggregationParameters.GetQuantiles() ?? Quantiles.DefaultQuantiles;
var sortedBuckets = buckets.OrderBy(b => b.Key.LowerBound).ToList();
var quantileTags = Quantiles.QuantileTags(quantiles, tags);
for (var i = 0; i < quantiles.Length; i++)
{
var value = GetQuantile(sortedBuckets, quantiles[i]);
result.Add(new MetricEvent(value, quantileTags[i], timestamp, lastEvent.Unit, null, null));
}
var totalCount = sortedBuckets.Sum(x => x.Value);
var countTags = tags.Append(WellKnownTagKeys.Aggregate, WellKnownTagValues.AggregateCount);
result.Add(new MetricEvent(totalCount, countTags, timestamp, null, null, null));
return(result);
}
