public HistogramSpec(
string name,
string help,
string[] labels,
HistogramBuckets buckets) : base(name, help, labels)
{
Buckets = buckets;
}
internal void RegisterHistogram(string name, string help, string[] labels, HistogramBuckets buckets)
{
var key = BuildKey(name);
var config = BuildHistogramConfig(buckets, labels);
var histogram = Prometheus.Metrics.CreateHistogram(key, help, config);
_histograms.Add(key, histogram);
Logger.Debug($"Registered histogram metric {key}");
}
static HistogramConfiguration BuildHistogramConfig(HistogramBuckets buckets, string[] labels)
{
var promBuckets = buckets.Kind == HistogramBucketKind.Exponential
? Histogram.ExponentialBuckets(buckets.Start, buckets.Inc, (int)buckets.Count)
: Histogram.LinearBuckets(buckets.Start, buckets.Inc, (int)buckets.Count);
return(new HistogramConfiguration {
LabelNames = labels, Buckets = promBuckets
});
}
public void AddHistogram(string name, HistogramBuckets buckets, string help = null, string[] labels = null)
{
Histograms.Add(new HistogramSpec(name, help, labels, buckets));
}
