bring the new skeleton into place

1 files changed, 33 insertions, 0 deletions

diff --git a/kamon-core/src/main/scala/kamon/metric/instrument/DynamicRange.scala b/kamon-core/src/main/scala/kamon/metric/instrument/DynamicRange.scala
new file mode 100644
index 00000000..628439c2
--- /dev/null
+++ b/kamon-core/src/main/scala/kamon/metric/instrument/DynamicRange.scala
@@ -0,0 +1,33 @@
+package kamon.metric.instrument
+
+import java.util.concurrent.TimeUnit
+
+case class DynamicRange(lowestDiscernibleValue: Long, highestTrackableValue: Long, significantValueDigits: Int) {
+  def upTo(highestTrackableValue: Long): DynamicRange =
+    copy(highestTrackableValue = highestTrackableValue)
+
+  def startingFrom(lowestDiscernibleValue: Long): DynamicRange =
+    copy(lowestDiscernibleValue = lowestDiscernibleValue)
+}
+
+object DynamicRange {
+  private val oneHourInNanoseconds = TimeUnit.HOURS.toNanos(1)
+
+  /**
+    * Provides a range from 0 to 3.6e+12 (one hour in nanoseconds) with a value precision of 1 significant digit (10%)
+    * across that range.
+    */
+  val Loose = DynamicRange(0L, oneHourInNanoseconds, 1)
+
+  /**
+    * Provides a range from 0 to 3.6e+12 (one hour in nanoseconds) with a value precision of 2 significant digit (1%)
+    * across that range.
+    */
+  val Default = DynamicRange(0L, oneHourInNanoseconds, 2)
+
+  /**
+    * Provides a range from 0 to 3.6e+12 (one hour in nanoseconds) with a value precision of 3 significant digit (0.1%)
+    * across that range.
+    */
+  val Fine = DynamicRange(0L, oneHourInNanoseconds, 3)
+}