private protected override async Task CollectAndSerializeImplAsync(IMetricsSerializer serializer, CancellationToken cancel)
{
// We output sum.
// We output count.
// We output each bucket in order of increasing upper bound.
await serializer.WriteMetricAsync(_sumIdentifier, _sum.Value, cancel);
await serializer.WriteMetricAsync(_countIdentifier, _bucketCounts.Sum(b => b.Value), cancel);
var cumulativeCount = 0L;
for (var i = 0; i < _bucketCounts.Length; i++)
{
cumulativeCount += _bucketCounts[i].Value;
await serializer.WriteMetricAsync(_bucketIdentifiers[i], cumulativeCount, cancel);
}
}
private protected override async Task CollectAndSerializeImplAsync(IMetricsSerializer serializer, CancellationToken cancel)
{
// We output sum.
// We output count.
// We output quantiles.
var now = DateTime.UtcNow;
double count;
double sum;
var values = new List <(double quantile, double value)>(_objectives.Count);
lock (_bufLock)
{
lock (_lock)
{
// Swap bufs even if hotBuf is empty to set new hotBufExpTime.
SwapBufs(now);
FlushColdBuf();
count = _count;
sum = _sum;
for (var i = 0; i < _sortedObjectives.Length; i++)
{
var quantile = _sortedObjectives[i];
var value = _headStream.Count == 0 ? double.NaN : _headStream.Query(quantile);
values.Add((quantile, value));
}
}
}
await serializer.WriteMetricAsync(_sumIdentifier, sum, cancel);
await serializer.WriteMetricAsync(_countIdentifier, count, cancel);
for (var i = 0; i < values.Count; i++)
{
await serializer.WriteMetricAsync(_quantileIdentifiers[i], values[i].value, cancel);
}
}
private protected override Task CollectAndSerializeImplAsync(IMetricsSerializer serializer, CancellationToken cancel)
{
return(serializer.WriteMetricAsync(_identifier, Value, cancel));
}