From 686040cb569283667b967494be4a7088ef35964c Mon Sep 17 00:00:00 2001
From: Ivan Topolnjak <ivantopo@gmail.com>
Date: Tue, 12 Dec 2017 15:00:59 +0100
Subject: use a specialized java.time.Clock exposed through the Kamon companion
 object

---
 kamon-core/src/main/scala/kamon/util/Clock.scala | 36 ++++++++++++++++--------
 1 file changed, 25 insertions(+), 11 deletions(-)

(limited to 'kamon-core/src/main/scala/kamon/util')

diff --git a/kamon-core/src/main/scala/kamon/util/Clock.scala b/kamon-core/src/main/scala/kamon/util/Clock.scala
index 8765ec69..4f4561b5 100644
--- a/kamon-core/src/main/scala/kamon/util/Clock.scala
+++ b/kamon-core/src/main/scala/kamon/util/Clock.scala
@@ -15,20 +15,34 @@
 
 package kamon.util
 
+import java.time.{Instant, ZoneId, Clock => JavaClock}
+
+abstract class Clock extends JavaClock {
+  def micros(): Long
+  def relativeNanos(): Long
+}
+
 object Clock {
-  private val startTimeMillis = System.currentTimeMillis()
-  private val startNanoTime = System.nanoTime()
-  private val startMicroTime = startTimeMillis * 1000L
 
-  def microTimestamp(): Long =
-    startMicroTime + ((System.nanoTime() - startNanoTime) / 1000L)
+  class Default extends Clock {
+    private val systemClock = JavaClock.systemUTC()
+    private val startTimeMillis = System.currentTimeMillis()
+    private val startNanoTime = System.nanoTime()
+    private val startMicroTime = startTimeMillis * 1000L
+
+    override def micros(): Long =
+      startMicroTime + ((System.nanoTime() - startNanoTime) / 1000L)
+
+    override def relativeNanos(): Long =
+      System.nanoTime()
 
-  def milliTimestamp(): Long =
-    System.currentTimeMillis()
+    override def instant(): Instant =
+      systemClock.instant()
 
-  def relativeNanoTimestamp(): Long =
-    System.nanoTime()
+    override def withZone(zone: ZoneId): JavaClock =
+      systemClock.withZone(zone)
 
-  def toMicroTimestamp(nanoTime: Long): Long =
-    startMicroTime + (startNanoTime - nanoTime / 1000L)
+    override def getZone: ZoneId =
+      systemClock.getZone()
+  }
 }
\ No newline at end of file
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