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author | Diego Parra <diegolparra@gmail.com> | 2015-12-24 12:30:58 -0300 |
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committer | Diego Parra <diegolparra@gmail.com> | 2015-12-24 12:30:58 -0300 |
commit | 9899b33351ad769558b0bcd9af4533b070c91162 (patch) | |
tree | 735de28155e9ec9fce26b2f0ed1754a38fb81ade /kamon-core/src/main/scala/kamon/metric/MetricScaleDecorator.scala | |
parent | 961c6080fbf3cb1662121992a6ba65d7ca999a1e (diff) | |
parent | 4a918ce6570129d3d4fd2d3e98d43f8078bb2d99 (diff) | |
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Merge pull request #294 from jozic/scale
Scale
Diffstat (limited to 'kamon-core/src/main/scala/kamon/metric/MetricScaleDecorator.scala')
-rw-r--r-- | kamon-core/src/main/scala/kamon/metric/MetricScaleDecorator.scala | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/kamon-core/src/main/scala/kamon/metric/MetricScaleDecorator.scala b/kamon-core/src/main/scala/kamon/metric/MetricScaleDecorator.scala new file mode 100644 index 00000000..e096429d --- /dev/null +++ b/kamon-core/src/main/scala/kamon/metric/MetricScaleDecorator.scala @@ -0,0 +1,55 @@ +/* + * ========================================================================================= + * Copyright © 2013-2015 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 + +import akka.actor.{ Actor, ActorRef, Props } +import kamon.metric.SubscriptionsDispatcher.TickMetricSnapshot +import kamon.metric.instrument._ + +/** + * Can be used as a decorator to scale TickMetricSnapshot messages to given `timeUnits` and/or `memoryUnits` + * before forwarding to original receiver + * @param timeUnits Optional time units to scale time metrics to + * @param memoryUnits Optional memory units to scale memory metrics to + * @param receiver Receiver of scaled metrics snapshot, usually a backend sender + */ +class MetricScaleDecorator(timeUnits: Option[Time], memoryUnits: Option[Memory], receiver: ActorRef) extends Actor { + require(timeUnits.isDefined || memoryUnits.isDefined, + "Use MetricScaleDecorator only when any of units is defined") + + override def receive: Receive = { + case tick: TickMetricSnapshot ⇒ + val scaled = tick.copy(metrics = tick.metrics.mapValues { entitySnapshot ⇒ + new DefaultEntitySnapshot(entitySnapshot.metrics.map { + case (metricKey, metricSnapshot) ⇒ + val scaledSnapshot = (metricKey.unitOfMeasurement, timeUnits, memoryUnits) match { + case (time: Time, Some(to), _) ⇒ metricSnapshot.scale(time, to) + case (memory: Memory, _, Some(to)) ⇒ metricSnapshot.scale(memory, to) + case _ ⇒ metricSnapshot + } + metricKey -> scaledSnapshot + }) + }) + receiver forward scaled + } +} + +object MetricScaleDecorator { + def props(timeUnits: Option[Time], memoryUnits: Option[Memory], receiver: ActorRef): Props = + Props(new MetricScaleDecorator(timeUnits, memoryUnits, receiver)) +} + |