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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.lang.management.ManagementFactory
import akka.actor._
import akka.event.Logging
import kamon.Kamon
import kamon.metric.Metrics
import kamon.metrics._
import kamon.system.SystemMetricsCollectorActor.Collect
import org.hyperic.sigar.{ NetInterfaceStat, SigarProxy, Mem }
import scala.concurrent.duration._
import scala.collection.JavaConverters._
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(private val system: ExtendedActorSystem) extends Kamon.Extension {
import kamon.system.SystemMetricsExtension._
val log = Logging(system, classOf[SystemMetricsExtension])
log.info(s"Starting the Kamon(SystemMetrics) extension")
val systemMetricsExtension = Kamon(Metrics)(system)
//JVM Metrics
systemMetricsExtension.register(HeapMetrics(Heap), HeapMetrics.Factory)
garbageCollectors.map { gc ⇒ systemMetricsExtension.register(GCMetrics(gc.getName), GCMetrics.Factory(gc)) }
//System Metrics
system.actorOf(SystemMetricsCollectorActor.props(1 second), "system-metrics-collector")
}
object SystemMetricsExtension {
val CPU = "cpu"
val ProcessCPU = "process-cpu"
val Network = "network"
val Memory = "memory"
val Heap = "heap"
val garbageCollectors = ManagementFactory.getGarbageCollectorMXBeans.asScala.filter(_.isValid)
}
trait SigarExtensionProvider {
lazy val sigar = SigarHolder.instance()
}
class SystemMetricsCollectorActor(collectInterval: FiniteDuration) extends Actor with SigarExtensionProvider {
import kamon.system.SystemMetricsExtension._
val collectSchedule = context.system.scheduler.schedule(collectInterval, collectInterval, self, Collect)(context.dispatcher)
val systemMetricsExtension = Kamon(Metrics)(context.system)
val cpuRecorder = systemMetricsExtension.register(CPUMetrics(CPU), CPUMetrics.Factory)
val processCpuRecorder = systemMetricsExtension.register(ProcessCPUMetrics(ProcessCPU), ProcessCPUMetrics.Factory)
val memoryRecorder = systemMetricsExtension.register(MemoryMetrics(Memory), MemoryMetrics.Factory)
val networkRecorder = systemMetricsExtension.register(NetworkMetrics(Network), NetworkMetrics.Factory)
def receive: Receive = {
case Collect ⇒ collectMetrics()
case anything ⇒
}
override def postStop() = collectSchedule.cancel()
def pid = sigar.getPid
def procCpu = sigar.getProcCpu(pid)
def cpu = sigar.getCpuPerc
def mem = sigar.getMem
def swap = sigar.getSwap
val interfaces: Set[String] = sigar.getNetInterfaceList.toSet
def collectMetrics() = {
cpuRecorder.map {
cpur ⇒
cpur.user.record((cpu.getUser * 100L).toLong)
cpur.system.record((cpu.getSys * 100L).toLong)
cpur.cpuWait.record((cpu.getWait() * 100L).toLong)
cpur.idle.record((cpu.getIdle * 100L).toLong)
}
processCpuRecorder.map {
pcpur ⇒
pcpur.user.record(procCpu.getUser)
pcpur.system.record(procCpu.getSys)
}
memoryRecorder.map {
mr ⇒
mr.used.record(mem.getUsed)
mr.free.record(mem.getFree)
mr.swapUsed.record(swap.getUsed)
mr.swapFree.record(swap.getFree)
mr.buffer.record(collectBuffer(mem))
mr.cache.record(collectCache(mem))
}
networkRecorder.map {
nr ⇒
nr.rxBytes.record(collect(sigar, interfaces)(net ⇒ net.getRxBytes))
nr.txBytes.record(collect(sigar, interfaces)(net ⇒ net.getTxBytes))
nr.rxErrors.record(collect(sigar, interfaces)(net ⇒ net.getRxErrors))
nr.txErrors.record(collect(sigar, interfaces)(net ⇒ net.getTxErrors))
}
}
private def collectBuffer(mem: Mem): Long = if (mem.getUsed() != mem.getActualUsed()) mem.getActualUsed() else 0L
private def collectCache(mem: Mem): Long = if (mem.getFree() != mem.getActualFree()) mem.getActualFree() else 0L
private def collect(sigar: SigarProxy, interfaces: Set[String])(block: NetInterfaceStat ⇒ Long): Long = {
interfaces.foldLeft(0L) { (totalBytes, interface) ⇒
{
val net = sigar.getNetInterfaceStat(interface)
totalBytes + block(net)
}
}
}
}
object SystemMetricsCollectorActor {
case object Collect
def props(collectInterval: FiniteDuration): Props =
Props[SystemMetricsCollectorActor](new SystemMetricsCollectorActor(collectInterval))
}
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