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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.metric
import akka.actor.ActorSystem
import com.typesafe.config.Config
import kamon.metric.instrument.{ Histogram, HdrHistogram }
case class DispatcherMetrics(name: String) extends MetricGroupIdentity {
val category = DispatcherMetrics
}
object DispatcherMetrics extends MetricGroupCategory {
val name = "dispatcher"
case object MaximumPoolSize extends MetricIdentity { val name = "maximum-pool-size" }
case object RunningThreadCount extends MetricIdentity { val name = "running-thread-count" }
case object QueueTaskCount extends MetricIdentity { val name = "queued-task-count" }
case object PoolSize extends MetricIdentity { val name = "pool-size" }
case class DispatcherMetricRecorder(maximumPoolSize: Histogram, runningThreadCount: Histogram,
queueTaskCount: Histogram, poolSize: Histogram)
extends MetricGroupRecorder {
def collect(context: CollectionContext): MetricGroupSnapshot =
DispatcherMetricSnapshot(
maximumPoolSize.collect(context),
runningThreadCount.collect(context),
queueTaskCount.collect(context),
poolSize.collect(context))
def cleanup: Unit = {}
}
case class DispatcherMetricSnapshot(maximumPoolSize: Histogram.Snapshot, runningThreadCount: Histogram.Snapshot,
queueTaskCount: Histogram.Snapshot, poolSize: Histogram.Snapshot) extends MetricGroupSnapshot {
type GroupSnapshotType = DispatcherMetricSnapshot
def merge(that: DispatcherMetricSnapshot, context: CollectionContext): DispatcherMetricSnapshot =
DispatcherMetricSnapshot(
maximumPoolSize.merge(that.maximumPoolSize, context),
runningThreadCount.merge(that.runningThreadCount, context),
queueTaskCount.merge(that.queueTaskCount, context),
poolSize.merge(that.poolSize, context))
lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map(
(MaximumPoolSize -> maximumPoolSize),
(RunningThreadCount -> runningThreadCount),
(QueueTaskCount -> queueTaskCount),
(PoolSize -> poolSize))
}
val Factory = new MetricGroupFactory {
type GroupRecorder = DispatcherMetricRecorder
def create(config: Config, system: ActorSystem): DispatcherMetricRecorder = {
val settings = config.getConfig("precision.dispatcher")
val maximumPoolSizeConfig = settings.getConfig("maximum-pool-size")
val runningThreadCountConfig = settings.getConfig("running-thread-count")
val queueTaskCountConfig = settings.getConfig("queued-task-count")
val poolSizeConfig = settings.getConfig("pool-size")
new DispatcherMetricRecorder(
Histogram.fromConfig(maximumPoolSizeConfig),
Histogram.fromConfig(runningThreadCountConfig),
Histogram.fromConfig(queueTaskCountConfig),
Histogram.fromConfig(poolSizeConfig))
}
}
}
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