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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.system
import java.io.File
import akka.actor.SupervisorStrategy.Restart
import akka.actor._
import akka.event.Logging
import kamon.system.custom.{ ContextSwitchesUpdater, ContextSwitchesMetrics }
import kamon.system.jmx._
import kamon.Kamon
import kamon.sigar.SigarProvisioner
import kamon.system.sigar.SigarMetricsUpdater
import kamon.util.ConfigTools.Syntax
import scala.concurrent.duration.FiniteDuration
object SystemMetrics extends ExtensionId[SystemMetricsExtension] with ExtensionIdProvider {
override def lookup(): ExtensionId[_ <: Extension] = SystemMetrics
override def createExtension(system: ExtendedActorSystem): SystemMetricsExtension = new SystemMetricsExtension(system)
}
class SystemMetricsExtension(system: ExtendedActorSystem) extends Kamon.Extension {
val log = Logging(system, classOf[SystemMetricsExtension])
log.info(s"Starting the Kamon(SystemMetrics) extension")
val config = system.settings.config.getConfig("kamon.system-metrics")
val sigarFolder = config.getString("sigar-native-folder")
val sigarRefreshInterval = config.getFiniteDuration("sigar-metrics-refresh-interval")
val sigarEnabled = config.getBoolean("sigar-enabled")
val jmxEnabled = config.getBoolean("jmx-enabled")
val contextSwitchesRefreshInterval = config.getFiniteDuration("context-switches-refresh-interval")
val metricsExtension = Kamon.metrics
// OS Metrics collected with Sigar
if (sigarEnabled) {
SigarProvisioner.provision(new File(sigarFolder))
system.actorOf(SystemMetricsSupervisor.props(sigarRefreshInterval, contextSwitchesRefreshInterval), "kamon-system-metrics")
}
// JMX Metrics
if (jmxEnabled) {
ClassLoadingMetrics.register(metricsExtension)
GarbageCollectionMetrics.register(metricsExtension)
HeapMemoryMetrics.register(metricsExtension)
NonHeapMemoryMetrics.register(metricsExtension)
ThreadsMetrics.register(metricsExtension)
}
}
class SystemMetricsSupervisor(sigarRefreshInterval: FiniteDuration, contextSwitchesRefreshInterval: FiniteDuration) extends Actor {
// Sigar metrics recorder
context.actorOf(SigarMetricsUpdater.props(sigarRefreshInterval)
.withDispatcher("kamon.system-metrics.sigar-dispatcher"), "sigar-metrics-recorder")
// If we are in Linux, add ContextSwitchesMetrics as well.
if (isLinux) {
val contextSwitchesRecorder = ContextSwitchesMetrics.register(context.system, contextSwitchesRefreshInterval)
context.actorOf(ContextSwitchesUpdater.props(contextSwitchesRecorder, sigarRefreshInterval)
.withDispatcher("kamon.system-metrics.context-switches-dispatcher"), "context-switches-metrics-recorder")
}
def isLinux: Boolean =
System.getProperty("os.name").indexOf("Linux") != -1
def receive = Actor.emptyBehavior
override def supervisorStrategy: SupervisorStrategy = OneForOneStrategy() {
case anyException ⇒ Restart
}
}
object SystemMetricsSupervisor {
def props(sigarRefreshInterval: FiniteDuration, contextSwitchesRefreshInterval: FiniteDuration): Props =
Props(new SystemMetricsSupervisor(sigarRefreshInterval, contextSwitchesRefreshInterval))
}
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