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/*
* =========================================================================================
* Copyright © 2013-2015 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.sigar
import akka.event.LoggingAdapter
import kamon.metric.GenericEntityRecorder
import kamon.metric.instrument._
import org.hyperic.sigar.{ NetInterfaceStat, Sigar }
import scala.util.Try
/**
* Network metrics, as reported by Sigar:
* - rxBytes: Total number of received packets in bytes.
* - txBytes: Total number of transmitted packets in bytes.
* - rxErrors: Total number of packets received with errors. This includes too-long-frames errors, ring-buffer overflow errors, etc.
* - txErrors: Total number of errors encountered while transmitting packets. This list includes errors due to the transmission being aborted, errors due to the carrier, etc.
* - rxDropped: Total number of incoming packets dropped.
* - txDropped: Total number of outgoing packets dropped.
*/
class NetworkMetrics(sigar: Sigar, instrumentFactory: InstrumentFactory, logger: LoggingAdapter) extends GenericEntityRecorder(instrumentFactory) with SigarMetric {
import SigarSafeRunner._
val receivedBytes = DiffRecordingHistogram(histogram("rx-bytes", Memory.Bytes))
val transmittedBytes = DiffRecordingHistogram(histogram("tx-bytes", Memory.Bytes))
val receiveErrors = DiffRecordingHistogram(histogram("rx-errors"))
val transmitErrors = DiffRecordingHistogram(histogram("tx-errors"))
val receiveDrops = DiffRecordingHistogram(histogram("rx-dropped"))
val transmitDrops = DiffRecordingHistogram(histogram("tx-dropped"))
val interfaces = runSafe(sigar.getNetInterfaceList.toList.filter(_ != "lo"), List.empty[String], "network", logger)
def sumOfAllInterfaces(sigar: Sigar, thunk: NetInterfaceStat ⇒ Long): Long = Try {
interfaces.map(i ⇒ thunk(sigar.getNetInterfaceStat(i))).fold(0L)(_ + _)
} getOrElse 0L
def update(): Unit = {
receivedBytes.record(sumOfAllInterfaces(sigar, _.getRxBytes))
transmittedBytes.record(sumOfAllInterfaces(sigar, _.getTxBytes))
receiveErrors.record(sumOfAllInterfaces(sigar, _.getRxErrors))
transmitErrors.record(sumOfAllInterfaces(sigar, _.getTxErrors))
receiveDrops.record(sumOfAllInterfaces(sigar, _.getRxDropped))
transmitDrops.record(sumOfAllInterfaces(sigar, _.getTxDropped))
}
}
object NetworkMetrics extends SigarMetricRecorderCompanion("network") {
def apply(sigar: Sigar, instrumentFactory: InstrumentFactory, logger: LoggingAdapter): NetworkMetrics =
new NetworkMetrics(sigar, instrumentFactory, logger)
}
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