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author | Diego <diegolparra@gmail.com> | 2014-05-07 22:07:02 -0300 |
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committer | Diego <diegolparra@gmail.com> | 2014-05-07 22:07:02 -0300 |
commit | 290aabd4608bffc58cf8fe734371ee7bbe78df4f (patch) | |
tree | 4813ac52bdc74dbd1ba6cbed82bfd82893b17b50 /kamon-core/src/main/scala/kamon/metrics/instruments | |
parent | 5e413d21a2fe5e604eca5b2c2f029206a61c83aa (diff) | |
download | Kamon-290aabd4608bffc58cf8fe734371ee7bbe78df4f.tar.gz Kamon-290aabd4608bffc58cf8fe734371ee7bbe78df4f.tar.bz2 Kamon-290aabd4608bffc58cf8fe734371ee7bbe78df4f.zip |
+ core: MinMaxCounter for actor mailbox size
Diffstat (limited to 'kamon-core/src/main/scala/kamon/metrics/instruments')
-rw-r--r-- | kamon-core/src/main/scala/kamon/metrics/instruments/counter/MinMaxCounter.scala | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/kamon-core/src/main/scala/kamon/metrics/instruments/counter/MinMaxCounter.scala b/kamon-core/src/main/scala/kamon/metrics/instruments/counter/MinMaxCounter.scala new file mode 100644 index 00000000..052c7bcd --- /dev/null +++ b/kamon-core/src/main/scala/kamon/metrics/instruments/counter/MinMaxCounter.scala @@ -0,0 +1,57 @@ +package kamon.metrics.instruments.counter +/* + * ========================================================================================= + * 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. + * ========================================================================================= + */ + +import java.lang.Math._ +import jsr166e.LongMaxUpdater +import kamon.util.PaddedAtomicLong + +sealed trait Counter { + def increment(value: Long = 1L): Unit + def decrement(value: Long = 1L): Unit + def collect(): (Long, Long, Long) +} + +class MinMaxCounter extends Counter { + private val min = new LongMaxUpdater + private val max = new LongMaxUpdater + private val sum = new PaddedAtomicLong + + min.update(0L) + max.update(0L) + + def increment(value: Long = 1L): Unit = { + val currentValue = sum.addAndGet(value) + max.update(currentValue) + } + + def decrement(value: Long = 1L): Unit = { + val currentValue = sum.addAndGet(-value) + min.update(-currentValue) + } + + def collect(): (Long, Long, Long) = { + val currentValue = sum.get() + val result = (abs(min.max()), max.max(), currentValue) + max.update(currentValue) + min.update(-currentValue) + result + } +} + +object MinMaxCounter { + def apply(): Counter = new MinMaxCounter() +} |