/* * ========================================================================================= * Copyright © 2013-2014 the kamon project * * 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.ManagementFactory import akka.actor.ActorSystem import com.typesafe.config.Config import kamon.metric._ import kamon.metric.instrument.{ Gauge, Histogram } case class ThreadMetrics(name: String) extends MetricGroupIdentity { val category = ThreadMetrics } object ThreadMetrics extends MetricGroupCategory { val name = "thread" case object Damon extends MetricIdentity { val name = "daemon-count" } case object Count extends MetricIdentity { val name = "count" } case object Peak extends MetricIdentity { val name = "peak-count" } case class ThreadMetricRecorder(daemon: Gauge, count: Gauge, peak: Gauge) extends MetricGroupRecorder { def collect(context: CollectionContext): MetricGroupSnapshot = { ThreadMetricSnapshot(daemon.collect(context), count.collect(context), peak.collect(context)) } def cleanup: Unit = {} } case class ThreadMetricSnapshot(daemon: Histogram.Snapshot, count: Histogram.Snapshot, peak: Histogram.Snapshot) extends MetricGroupSnapshot { type GroupSnapshotType = ThreadMetricSnapshot def merge(that: GroupSnapshotType, context: CollectionContext): GroupSnapshotType = { ThreadMetricSnapshot(daemon.merge(that.daemon, context), count.merge(that.count, context), peak.merge(that.peak, context)) } lazy val metrics: Map[MetricIdentity, MetricSnapshot] = Map( Damon -> daemon, Count -> count, Peak -> peak) } val Factory = ThreadMetricGroupFactory } case object ThreadMetricGroupFactory extends MetricGroupFactory { import ThreadMetrics._ def threads = ManagementFactory.getThreadMXBean type GroupRecorder = ThreadMetricRecorder def create(config: Config, system: ActorSystem): GroupRecorder = { val settings = config.getConfig("precision.jvm.thread") val daemonThreadConfig = settings.getConfig("daemon") val countThreadsConfig = settings.getConfig("count") val peakThreadsConfig = settings.getConfig("peak") new ThreadMetricRecorder( Gauge.fromConfig(daemonThreadConfig, system)(() ⇒ threads.getDaemonThreadCount.toLong), Gauge.fromConfig(countThreadsConfig, system)(() ⇒ threads.getThreadCount.toLong), Gauge.fromConfig(peakThreadsConfig, system)(() ⇒ threads.getPeakThreadCount.toLong)) } }