net.java.truevfs.ext.insight.I5tStatisticsView.scala Maven / Gradle / Ivy

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Instruments the TrueVFS Kernel for statistics monitoring via JMX. Add the JAR artifact of this module to the run time class path to make its services available for service location in the client API modules.

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/*
 * Copyright (C) 2005-2013 Schlichtherle IT Services.
 * All rights reserved. Use is subject to license terms.
 */
package net.java.truevfs.ext.insight

import javax.annotation.concurrent._
import javax.management._
import net.java.truevfs.ext.insight.stats._

/**
  * A view for [[net.java.truevfs.ext.insight.stats.FsStatistics]].
  *
  * @author Christian Schlichtherle
  */
@ThreadSafe
private abstract class I5tStatisticsView(tµpe: Class[_], isMXBean: Boolean)
extends StandardMBean(tµpe, isMXBean) with FsStatisticsView {

  protected override def getDescription(info: MBeanAttributeInfo) = {
    info.getName match {
      case "ReadBytesPerOperation"        => "The average number of bytes per read operation."
      case "ReadBytesTotal"               => "The total number of bytes read."
      case "ReadKilobytesPerSecond"       => "The average throughput for read operations."
      case "ReadNanosecondsPerOperation"  => "The average execution time per read operation."
      case "ReadNanosecondsTotal"         => "The total execution time for read operations."
      case "ReadOperations"               => "The total number of read operations."
      case "ReadThreadsTotal"             => "The total number of reading threads."
      case "Subject"                      => "The subject of this log."
      case "SyncNanosecondsPerOperation"  => "The average execution time per sync operation."
      case "SyncNanosecondsTotal"         => "The total execution time for sync operations."
      case "SyncOperations"               => "The total number of sync operations."
      case "SyncThreadsTotal"             => "The total number of syncing threads."
      case "TimeCreatedDate"              => "The time this log has been created."
      case "TimeCreatedMillis"            => "The time this log has been created in milliseconds."
      case "TimeUpdatedDate"              => "The last time this log has been updated."
      case "TimeUpdatedMillis"            => "The last time this log has been updated in milliseconds."
      case "WriteBytesPerOperation"       => "The average number of bytes per write operation."
      case "WriteBytesTotal"              => "The total number of bytes written."
      case "WriteKilobytesPerSecond"      => "The average throughput for write operations."
      case "WriteNanosecondsPerOperation" => "The average execution time per write operation."
      case "WriteNanosecondsTotal"        => "The total execution time for write operations."
      case "WriteOperations"              => "The total number of write operations."
      case "WriteThreadsTotal"            => "The total number of writing threads."
      case _                              => null
    }
  }

  protected override def getDescription(info: MBeanOperationInfo) = {
    info.getName match {
      case "rotate" => "Rotates the underlying statistics. This operation does not affect snapshots."
      case _        => null
    }
  }

  def getSubject: String

  def rotate()
}