diff options
Diffstat (limited to 'kamon-core/src/main/scala/kamon/metric/instrument/Counter.scala')
-rw-r--r-- | kamon-core/src/main/scala/kamon/metric/instrument/Counter.scala | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/kamon-core/src/main/scala/kamon/metric/instrument/Counter.scala b/kamon-core/src/main/scala/kamon/metric/instrument/Counter.scala deleted file mode 100644 index b7ab60de..00000000 --- a/kamon-core/src/main/scala/kamon/metric/instrument/Counter.scala +++ /dev/null @@ -1,65 +0,0 @@ -/* - * ========================================================================================= - * Copyright © 2013-2014 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.metric.instrument - -import kamon.jsr166.LongAdder - -trait Counter extends Instrument { - type SnapshotType = Counter.Snapshot - - def increment(): Unit - def increment(times: Long): Unit -} - -object Counter { - - def apply(): Counter = new LongAdderCounter - def create(): Counter = apply() - - trait Snapshot extends InstrumentSnapshot { - def count: Long - def merge(that: InstrumentSnapshot, context: CollectionContext): Counter.Snapshot - def scale(from: UnitOfMeasurement, to: UnitOfMeasurement): Counter.Snapshot - } -} - -class LongAdderCounter extends Counter { - private val counter = new LongAdder - - def increment(): Unit = counter.increment() - - def increment(times: Long): Unit = { - if (times < 0) - throw new UnsupportedOperationException("Counters cannot be decremented") - counter.add(times) - } - - def collect(context: CollectionContext): Counter.Snapshot = CounterSnapshot(counter.sumAndReset()) - - def cleanup: Unit = {} -} - -case class CounterSnapshot(count: Long) extends Counter.Snapshot { - def merge(that: InstrumentSnapshot, context: CollectionContext): Counter.Snapshot = that match { - case CounterSnapshot(thatCount) ⇒ CounterSnapshot(count + thatCount) - case other ⇒ sys.error(s"Cannot merge a CounterSnapshot with the incompatible [${other.getClass.getName}] type.") - } - - override def scale(from: UnitOfMeasurement, to: UnitOfMeasurement): Counter.Snapshot = - CounterSnapshot(from.tryScale(to)(count).toLong) - -}
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