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Diffstat (limited to 'kamon-core/src/main/scala/kamon/metrics/instruments/ContinuousHdrRecorder.scala')
-rw-r--r-- | kamon-core/src/main/scala/kamon/metrics/instruments/ContinuousHdrRecorder.scala | 52 |
1 files changed, 0 insertions, 52 deletions
diff --git a/kamon-core/src/main/scala/kamon/metrics/instruments/ContinuousHdrRecorder.scala b/kamon-core/src/main/scala/kamon/metrics/instruments/ContinuousHdrRecorder.scala deleted file mode 100644 index 3a39ec69..00000000 --- a/kamon-core/src/main/scala/kamon/metrics/instruments/ContinuousHdrRecorder.scala +++ /dev/null @@ -1,52 +0,0 @@ -/* - * ========================================================================================= - * Copyright © 2013 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.metrics.instruments - -import org.HdrHistogram.HdrRecorder -import kamon.metrics.{ Scale, MetricSnapshotLike } - -/** - * This recorder keeps track of the last value recoded and automatically adds it after collecting a snapshot. This is - * useful in cases where the absence of recordings does not necessarily mean the absence of values. For example, if this - * recorder is used for recording the mailbox size of an actor, and it only gets updated upon message enqueue o dequeue, - * the absence of recordings during 1 second means that the size hasn't change (example: the actor being blocked doing - * some work) and it should keep its last known value, instead of dropping to zero and then going back to the real value - * after a new event is processed. - * - */ -class ContinuousHdrRecorder(highestTrackableValue: Long, significantValueDigits: Int, scale: Scale) - extends HdrRecorder(highestTrackableValue, significantValueDigits, scale) { - - @volatile private var lastRecordedValue: Long = 0 - - override def record(value: Long): Unit = { - lastRecordedValue = value - super.record(value) - } - - override def collect(): MetricSnapshotLike = { - val snapshot = super.collect() - super.record(lastRecordedValue) - - snapshot - } -} - -object ContinuousHdrRecorder { - def apply(highestTrackableValue: Long, significantValueDigits: Int, scale: Scale) = - new ContinuousHdrRecorder(highestTrackableValue, significantValueDigits, scale) -}
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