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// Portions Copyright [2018] Payara Foundation and/or affiliates
package org.glassfish.admin.monitor.jvm;
import java.lang.management.ManagementFactory;
import java.lang.management.OperatingSystemMXBean;
import org.glassfish.external.statistics.CountStatistic;
import org.glassfish.external.statistics.impl.CountStatisticImpl;
import org.glassfish.external.statistics.StringStatistic;
import org.glassfish.external.statistics.impl.StringStatisticImpl;
import org.glassfish.gmbal.AMXMetadata;
import org.glassfish.gmbal.Description;
import org.glassfish.gmbal.ManagedAttribute;
import org.glassfish.gmbal.ManagedObject;
/**
* Class providing the MBean for JVM operating system statistics
*
* The MBean will be of the format
* {@code amx:pp=/mon/server-mon[server],type=operating-system-mon,name=jvm/operating-system}
* and can be enabled by turning the Jvm monitoring level in the admin console to LOW
* @since v2
*/
@AMXMetadata(type="operating-system-mon", group="monitoring")
@ManagedObject
@Description( "JVM Operating System Statistics" )
public class JVMOSStatsProvider {
private final OperatingSystemMXBean osBean = ManagementFactory.getOperatingSystemMXBean();
private final StringStatisticImpl arch = new StringStatisticImpl("Architecture", "String",
"Operating system architecture" );
private final CountStatisticImpl availableProcessors = new CountStatisticImpl(
"AvailableProcessors", CountStatisticImpl.UNIT_COUNT,
"Number of processors available to the Java virtual machine" );
private final StringStatisticImpl osName = new StringStatisticImpl("Name", "String",
"Operating system name" );
private final StringStatisticImpl osVersion = new StringStatisticImpl("Version", "String",
"operating system version" );
//private CountStatisticImpl sysLoadAverage = new CountStatisticImpl(
// "SystemLoadAverage", CountStatisticImpl.UNIT_COUNT,
// "System load average for the last minute" );
/**
* Gets the operating system architecture i.e. i386 or amd64
* @return a {@link StringStatistic} with the name of architecture
*/
@ManagedAttribute(id="arch-current")
@Description( "operating system architecture" )
public StringStatistic getArch() {
arch.setCurrent(osBean.getArch());
return arch;
}
/**
* Gets the number of processors available to the Java virtual machine
* @return a {@link CountStatistic} with the number of processors
*/
@ManagedAttribute(id="availableprocessors-count")
@Description( "number of processors available to the Java virtual machine" )
public CountStatistic getAvailableProcessors() {
availableProcessors.setCount(osBean.getAvailableProcessors());
return availableProcessors;
}
/**
* Gets the operating system name i.e. Linux or Windows
* @return a {@link StringStatistic} with the name of the operating system
*/
@ManagedAttribute(id="name-current")
@Description( "operating system name" )
public StringStatistic getOSName() {
osName.setCurrent(osBean.getName());
return osName;
}
/**
* Gets the operating system version
* @return a {@link StringStatistic} with the operating system version
*/
@ManagedAttribute(id="version-current")
@Description( "operating system version" )
public StringStatistic getOSVersion() {
osVersion.setCurrent(osBean.getVersion());
return osVersion;
}
/*@ManagedAttribute(id="systemloadaverage-current")
@Description( "system load average for the last minute" )
public CountStatistic getSystemLoadAverage() {
sysLoadAverage.setCurrent(osBean.getSystemLoadAverage());
return sysLoadAverage;
}*/
}