com.redhat.thermostat.backend.system

Class JvmStatDataExtractor

java.lang.Object

com.redhat.thermostat.backend.system.JvmStatDataExtractor

public class JvmStatDataExtractor
extends java.lang.Object

A helper class to provide type-safe access to commonly used jvmstat monitors

Implementation details: For local vms, jvmstat uses a ByteBuffer corresponding to mmap()ed hsperfdata file. The hsperfdata file is updated asynchronously by the vm that created the file. The polling that jvmstat api provides is merely an abstraction over this (possibly always up-to-date) ByteBuffer. So the data this class extracts is as current as possible, and does not correspond to when the jvmstat update events fired.

Constructor Summary

Constructors

Constructor and Description
JvmStatDataExtractor(sun.jvmstat.monitor.MonitoredVm vm)

Method Summary

Methods

Modifier and Type	Method and Description
long	getCollectorInvocations(long collector)
java.lang.String	getCollectorName(long collector)
long	getCollectorTime(long collector)
java.lang.String	getCommandLine()
long	getGenerationCapacity(long generation)
java.lang.String	getGenerationCollector(long generation)
long	getGenerationMaxCapacity(long generation)
java.lang.String	getGenerationName(long generation)
java.lang.String	getJavaHome()
java.lang.String	getJavaVersion()
java.lang.String	getMainClass()
long	getSpaceCapacity(long generation, long space)
long	getSpaceMaxCapacity(long generation, long space)
java.lang.String	getSpaceName(long generation, long space)
long	getSpaceUsed(long generation, long space)
long	getTotalCollectors()
long	getTotalGcGenerations()
long	getTotalSpaces(long generation)
java.lang.String	getVmArguments()
java.lang.String	getVmInfo()
java.lang.String	getVmName()
java.lang.String	getVmVersion()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JvmStatDataExtractor

public JvmStatDataExtractor(sun.jvmstat.monitor.MonitoredVm vm)

Method Detail

getCommandLine

public java.lang.String getCommandLine()
                                throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getMainClass

public java.lang.String getMainClass()
                              throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getJavaVersion

public java.lang.String getJavaVersion()
                                throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getJavaHome

public java.lang.String getJavaHome()
                             throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getVmName

public java.lang.String getVmName()
                           throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getVmInfo

public java.lang.String getVmInfo()
                           throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getVmVersion

public java.lang.String getVmVersion()
                              throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getVmArguments

public java.lang.String getVmArguments()
                                throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getTotalCollectors

public long getTotalCollectors()
                        throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getCollectorName

public java.lang.String getCollectorName(long collector)
                                  throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getCollectorTime

public long getCollectorTime(long collector)
                      throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getCollectorInvocations

public long getCollectorInvocations(long collector)
                             throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getTotalGcGenerations

public long getTotalGcGenerations()
                           throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getGenerationName

public java.lang.String getGenerationName(long generation)
                                   throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getGenerationCapacity

public long getGenerationCapacity(long generation)
                           throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getGenerationMaxCapacity

public long getGenerationMaxCapacity(long generation)
                              throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getGenerationCollector

public java.lang.String getGenerationCollector(long generation)
                                        throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getTotalSpaces

public long getTotalSpaces(long generation)
                    throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getSpaceName

public java.lang.String getSpaceName(long generation,
                            long space)
                              throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getSpaceCapacity

public long getSpaceCapacity(long generation,
                    long space)
                      throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getSpaceMaxCapacity

public long getSpaceMaxCapacity(long generation,
                       long space)
                         throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException

getSpaceUsed

public long getSpaceUsed(long generation,
                long space)
                  throws sun.jvmstat.monitor.MonitorException

Throws:

sun.jvmstat.monitor.MonitorException