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/*
* =========================================================================================
* 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 akka.actor.ActorSystem
import com.typesafe.config.Config
import kamon.metric._
import kamon.metric.instrument.Histogram
case class LoadAverageMetrics(name: String) extends MetricGroupIdentity {
val category = LoadAverageMetrics
}
object LoadAverageMetrics extends MetricGroupCategory {
val name = "load-average"
case object OneMinute extends MetricIdentity { val name = "last-minute" }
case object FiveMinutes extends MetricIdentity { val name = "last-five-minutes" }
case object FifteenMinutes extends MetricIdentity { val name = "last-fifteen-minutes" }
case class LoadAverageMetricsRecorder(one: Histogram, five: Histogram, fifteen: Histogram)
extends MetricGroupRecorder {
def collect(context: CollectionContext): MetricGroupSnapshot = {
LoadAverageMetricsSnapshot(one.collect(context), five.collect(context), fifteen.collect(context))
}
def cleanup: Unit = {}
}
case class LoadAverageMetricsSnapshot(one: Histogram.Snapshot, five: Histogram.Snapshot, fifteen: Histogram.Snapshot)
extends MetricGroupSnapshot {
type GroupSnapshotType = LoadAverageMetricsSnapshot
def merge(that: GroupSnapshotType, context: CollectionContext): GroupSnapshotType = {
LoadAverageMetricsSnapshot(one.merge(that.one, context), five.merge(that.five, context), fifteen.merge(that.fifteen, context))
}
lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map(
OneMinute -> one,
FiveMinutes -> five,
FifteenMinutes -> fifteen)
}
val Factory = LoadAverageMetricGroupFactory
}
case object LoadAverageMetricGroupFactory extends MetricGroupFactory {
import LoadAverageMetrics._
type GroupRecorder = LoadAverageMetricsRecorder
def create(config: Config, system: ActorSystem): GroupRecorder = {
val settings = config.getConfig("precision.system.load-average")
val oneMinuteConfig = settings.getConfig("one")
val fiveMinutesConfig = settings.getConfig("five")
val fifteenMinutesConfig = settings.getConfig("fifteen")
new LoadAverageMetricsRecorder(
Histogram.fromConfig(oneMinuteConfig),
Histogram.fromConfig(fiveMinutesConfig),
Histogram.fromConfig(fifteenMinutesConfig))
}
}
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