protected override double Combine(List <Sample> samples, MetricConfig config, long now)
{
double total = 0.0;
foreach (var sample in samples)
{
total += sample.Value;
}
return(total);
}
public void Record(MetricConfig config, double value, long timeMs)
{
Sample sample = Current(timeMs);
if (sample.IsComplete(timeMs, config))
{
sample = Advance(config, timeMs);
}
Update(sample, config, value, timeMs);
sample.EventCount += 1;
}
internal void PurgeObsoleteSamples(MetricConfig config, long now)
{
long expireAge = config.Samples * config.TimeWindowMs;
foreach (Sample sample in samples)
{
if (now - sample.LastWindowMs >= expireAge)
{
sample.Reset(now);
}
}
}
protected override double Combine(List <Sample> samples, MetricConfig config, long now)
{
double total = 0.0;
long count = 0;
foreach (var s in samples)
{
total += s.Value;
count += s.EventCount;
}
return(count == 0 ? Double.NaN : total / count);
}
protected override double Combine(List <Sample> samples, MetricConfig config, long now)
{
double min = Double.MaxValue;
long count = 0;
foreach (var s in samples)
{
min = Math.Min(min, s.Value);
count += s.EventCount;
}
return(count == 0 ? Double.NaN : min);
}
protected override double Combine(List <Sample> samples, MetricConfig config, long now)
{
double max = Double.NegativeInfinity;
long count = 0;
foreach (var s in samples)
{
max = Math.Max(max, s.Value);
count += s.EventCount;
}
return(count == 0 ? Double.NaN : max);
}
private Sample Advance(MetricConfig config, long timeMs)
{
current = (current + 1) % config.Samples;
if (current >= samples.Count)
{
Sample sample = NewSample(timeMs);
samples.Add(sample);
return(sample);
}
else
{
Sample sample = Current(timeMs);
sample.Reset(timeMs);
return(sample);
}
}
public bool IsComplete(long timeMs, MetricConfig config)
{
return(timeMs - LastWindowMs >= config.TimeWindowMs || EventCount >= config.EventWindow);
}
protected override void Update(Sample sample, MetricConfig config, double value, long timeMs)
{
sample.Value += value;
}
public double Measure(MetricConfig config, long now)
{
double value = internalStat.Measure(config, now);
return(value / timeUnit.Convert(WindowSize(config, now)));
}
public void Record(MetricConfig config, double value, long timeMs) => internalStat.Record(config, value, timeMs);
protected override void Update(Sample sample, MetricConfig config, double value, long timeMs)
{
sample.Value = Math.Max(sample.Value, value);
}
object IGauge.Value(MetricConfig config, long now) => Value(config, now);
public T Value(MetricConfig config, long now) => provider();
public double Measure(MetricConfig config, long now)
{
PurgeObsoleteSamples(config, now);
return(Combine(samples, config, now));
}
protected abstract void Update(Sample sample, MetricConfig config, double value, long timeMs);
protected abstract double Combine(List <Sample> samples, MetricConfig config, long now);
