add timer utility metric, based on histograms

1 files changed, 4 insertions, 0 deletions

diff --git a/kamon-core/src/main/scala/kamon/metric/MetricRegistry.scala b/kamon-core/src/main/scala/kamon/metric/MetricRegistry.scala
index 07c1d202..07a0ebaa 100644
--- a/kamon-core/src/main/scala/kamon/metric/MetricRegistry.scala
+++ b/kamon-core/src/main/scala/kamon/metric/MetricRegistry.scala
@@ -21,6 +21,7 @@ import java.util.concurrent.atomic.AtomicReference
 import com.typesafe.config.Config
 import kamon.metric.InstrumentFactory.{InstrumentType, InstrumentTypes}
 import kamon.util.MeasurementUnit
+import kamon.util.MeasurementUnit.time
 
 import scala.collection.concurrent.TrieMap
 import java.time.Duration
@@ -53,6 +54,9 @@ class MetricRegistry(initialConfig: Config, scheduler: ScheduledExecutorService)
   def minMaxCounter(name: String, unit: MeasurementUnit, dynamicRange: Option[DynamicRange], sampleInterval: Option[Duration]): MinMaxCounterMetric =
     lookupMetric(name, unit, InstrumentTypes.MinMaxCounter)(new MinMaxCounterMetricImpl(name, unit, dynamicRange, sampleInterval, instrumentFactory, scheduler))
 
+  def timer(name: String, dynamicRange: Option[DynamicRange]): TimerMetric =
+    new TimerMetricImpl(histogram(name, time.nanoseconds, dynamicRange))
+
 
   override def snapshot(): MetricsSnapshot = synchronized {
     var histograms = Seq.empty[MetricDistribution]