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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 ContextSwitchesMetrics(name: String) extends MetricGroupIdentity {
val category = ContextSwitchesMetrics
}
object ContextSwitchesMetrics extends MetricGroupCategory {
val name = "context-switches"
case object PerProcessVoluntary extends MetricIdentity { val name = "per-process-voluntary" }
case object PerProcessNonVoluntary extends MetricIdentity { val name = "per-process-non-voluntary" }
case object Global extends MetricIdentity { val name = "global" }
case class ContextSwitchesMetricsRecorder(perProcessVoluntary: Histogram, perProcessNonVoluntary: Histogram, global: Histogram)
extends MetricGroupRecorder {
def collect(context: CollectionContext): MetricGroupSnapshot = {
ContextSwitchesMetricsSnapshot(perProcessVoluntary.collect(context), perProcessNonVoluntary.collect(context), global.collect(context))
}
def cleanup: Unit = {}
}
case class ContextSwitchesMetricsSnapshot(perProcessVoluntary: Histogram.Snapshot, perProcessNonVoluntary: Histogram.Snapshot, global: Histogram.Snapshot)
extends MetricGroupSnapshot {
type GroupSnapshotType = ContextSwitchesMetricsSnapshot
def merge(that: ContextSwitchesMetricsSnapshot, context: CollectionContext): GroupSnapshotType = {
ContextSwitchesMetricsSnapshot(perProcessVoluntary.merge(that.perProcessVoluntary, context), perProcessVoluntary.merge(that.perProcessVoluntary, context), global.merge(that.global, context))
}
lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map(
PerProcessVoluntary -> perProcessVoluntary,
PerProcessNonVoluntary -> perProcessNonVoluntary,
Global -> global)
}
val Factory = new MetricGroupFactory {
type GroupRecorder = ContextSwitchesMetricsRecorder
def create(config: Config, system: ActorSystem): GroupRecorder = {
val settings = config.getConfig("precision.system.context-switches")
val perProcessVoluntary = settings.getConfig("per-process-voluntary")
val perProcessNonVoluntary = settings.getConfig("per-process-non-voluntary")
val global = settings.getConfig("global")
new ContextSwitchesMetricsRecorder(
Histogram.fromConfig(perProcessVoluntary),
Histogram.fromConfig(perProcessNonVoluntary),
Histogram.fromConfig(global))
}
}
}
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