net.java.truevfs.ext.pacemaker.PaceManagerView.scala Maven / Gradle / Ivy

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Constrains the number of concurrently mounted archive file systems in order to save some heap space. This module provides a JMX interface for monitoring and management. 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.pacemaker

import javax.annotation.concurrent.ThreadSafe
import javax.management.MBeanAttributeInfo
import javax.management.MBeanInfo
import net.java.truevfs.comp.jmx.JmxManagerView

/**
 * A view for a [[net.java.truevfs.ext.pace.PaceManager]].
 *
 * @author Christian Schlichtherle
 */
@ThreadSafe
private final class PaceManagerView(manager: PaceManager)
extends JmxManagerView[PaceManager](classOf[PaceManagerMXBean], manager)
with PaceManagerMXBean {

  protected override def getDescription(info: MBeanInfo) = "A pace maker for the file system manager."

  protected override def getDescription(info: MBeanAttributeInfo) = {
    info.getName match {
      case "MaximumFileSystemsMounted" => "The maximum number of mounted file systems."
      case _                           => super.getDescription(info)
    }
  }

  override def getMaximumFileSystemsMounted = manager.max
  override def setMaximumFileSystemsMounted(max: Int) { manager.max = max }
}