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/* =========================================================================================
* Copyright © 2013-2017 the kamon project <http://kamon.io/>
*
* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software distributed under the
* License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
* either express or implied. See the License for the specific language governing permissions
* and limitations under the License.
* =========================================================================================
*/
package kamon.util
import java.time.{Instant, ZoneId, Clock => JavaClock}
abstract class Clock extends JavaClock {
def micros(): Long
def relativeNanos(): Long
}
object Clock {
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()
override def instant(): Instant =
systemClock.instant()
override def withZone(zone: ZoneId): JavaClock =
systemClock.withZone(zone)
override def getZone: ZoneId =
systemClock.getZone()
}
}
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