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package kamon.metric.instrument
import kamon.util.MeasurementUnit
/**
* Snapshot for instruments that internally track a single value. Meant to be used for counters and gauges.
*
*/
case class SingleValueSnapshot(name: String, tags: Map[String, String], measurementUnit: MeasurementUnit, value: Long)
/**
* Snapshot for instruments that internally the distribution of values in a defined dynamic range. Meant to be used
* with histograms and min max counters.
*/
case class DistributionSnapshot(name: String, tags: Map[String, String], measurementUnit: MeasurementUnit,
dynamicRange: DynamicRange, distribution: Distribution)
trait Distribution {
def buckets: Seq[Bucket]
def bucketsIterator: Iterator[Bucket]
def min: Long
def max: Long
def sum: Long
def count: Long
def percentile(p: Double): Percentile
def percentiles: Seq[Percentile]
def percentilesIterator: Iterator[Percentile]
}
trait Bucket {
def value: Long
def frequency: Long
}
trait Percentile {
def quantile: Double
def value: Long
def countUnderQuantile: Long
}
trait DistributionSnapshotInstrument {
private[kamon] def snapshot(): DistributionSnapshot
}
trait SingleValueSnapshotInstrument {
private[kamon] def snapshot(): SingleValueSnapshot
}
trait SnapshotableHistogram extends Histogram with DistributionSnapshotInstrument
trait SnapshotableMinMaxCounter extends MinMaxCounter with DistributionSnapshotInstrument
trait SnapshotableCounter extends Counter with SingleValueSnapshotInstrument
trait SnapshotableGauge extends Gauge with SingleValueSnapshotInstrument
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