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Diffstat (limited to 'kamon-system-metrics/src/main/scala/kamon/metrics/GCMetrics.scala')
-rw-r--r-- | kamon-system-metrics/src/main/scala/kamon/metrics/GCMetrics.scala | 75 |
1 files changed, 75 insertions, 0 deletions
diff --git a/kamon-system-metrics/src/main/scala/kamon/metrics/GCMetrics.scala b/kamon-system-metrics/src/main/scala/kamon/metrics/GCMetrics.scala new file mode 100644 index 00000000..b5da600e --- /dev/null +++ b/kamon-system-metrics/src/main/scala/kamon/metrics/GCMetrics.scala @@ -0,0 +1,75 @@ +/* + * ========================================================================================= + * 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.metrics + +import java.lang.management.GarbageCollectorMXBean + +import akka.actor.ActorSystem +import com.typesafe.config.Config +import kamon.metric._ +import kamon.metric.instrument.{ Gauge, Histogram } + +case class GCMetrics(name: String) extends MetricGroupIdentity { + val category = GCMetrics +} + +object GCMetrics extends MetricGroupCategory { + val name = "gc" + + case object CollectionCount extends MetricIdentity { val name = "collection-count" } + case object CollectionTime extends MetricIdentity { val name = "collection-time" } + + case class GCMetricRecorder(count: Gauge, time: Gauge) + extends MetricGroupRecorder { + + def collect(context: CollectionContext): MetricGroupSnapshot = { + GCMetricSnapshot(count.collect(context), time.collect(context)) + } + + def cleanup: Unit = {} + } + + case class GCMetricSnapshot(count: Histogram.Snapshot, time: Histogram.Snapshot) + extends MetricGroupSnapshot { + + type GroupSnapshotType = GCMetricSnapshot + + def merge(that: GroupSnapshotType, context: CollectionContext): GroupSnapshotType = { + GCMetricSnapshot(count.merge(that.count, context), time.merge(that.time, context)) + } + + lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map( + CollectionCount -> count, + CollectionTime -> time) + } + + def Factory(gc: GarbageCollectorMXBean) = new MetricGroupFactory { + + type GroupRecorder = GCMetricRecorder + + def create(config: Config, system: ActorSystem): GroupRecorder = { + val settings = config.getConfig("precision.jvm.gc") + + val countConfig = settings.getConfig("count") + val timeConfig = settings.getConfig("time") + + new GCMetricRecorder( + Gauge.fromConfig(countConfig, system)(() ⇒ gc.getCollectionCount), + Gauge.fromConfig(timeConfig, system, Scale.Milli)(() ⇒ gc.getCollectionTime)) + } + } +} + |