org.xmlBlaster.engine.cluster
Class NodeStateInfo

java.lang.Object
  org.xmlBlaster.engine.cluster.NodeStateInfo

public class NodeStateInfo
extends java.lang.Object

Holds performance data of a node.

This is a demo code only, we need to change it to handle some performance index which is comparable between different nodes.

 <!-- Messages of type "__sys__cluster.node.master[heron]": -->
 <state>
   <cpu id='0' idle='40'/>   <!-- currently 60% load on first CPU -->
   <cpu id='1' idle='44'/>
   <ram free='12000'/>       <!-- xmlBlaster server has 12 MB free memory -->
   <performance bogomips='1205.86' idleIndex='20'/>
 </master>
 

Nested Class Summary

(package private) class

NodeStateInfo.Cpu

Field Summary

private int	avgCpuIdle Average idle of all CPUs of the node, -1 if not known
private java.util.Map	cpuMap Holds Cpu info objects, the key is the 'id'
private int	freeRam Free RAM memory in kBytes, -1 if not known
private static java.util.logging.Logger	log

Constructor Summary

NodeStateInfo(Global global)

Method Summary

void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String name, java.lang.StringBuffer character) Handle SAX parsed end element
int	getAvgCpuIdle()
int	getFreeRam()
void	setCpu(int id, int idle) Add or change the current CPU idle value
void	setFreeRam(int freeRam) Free RAM memory in kBytes
boolean	startElement(java.lang.String uri, java.lang.String localName, java.lang.String name, java.lang.StringBuffer character, org.xml.sax.Attributes attrs) Called for SAX master start tag
java.lang.String	toXml() Dump state of this object into a XML ASCII string.
java.lang.String	toXml(java.lang.String extraOffset) Dump state of this object into a XML ASCII string.

Methods inherited from class java.lang.Object

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

Field Detail

log

private static java.util.logging.Logger log

freeRam

private int freeRam

Free RAM memory in kBytes, -1 if not known

cpuMap

private java.util.Map cpuMap

Holds Cpu info objects, the key is the 'id'

avgCpuIdle

private int avgCpuIdle

Average idle of all CPUs of the node, -1 if not known

Constructor Detail

NodeStateInfo

public NodeStateInfo(Global global)

Method Detail

getFreeRam

public int getFreeRam()

Returns:

Free RAM memory in kBytes

setFreeRam

public void setFreeRam(int freeRam)

Free RAM memory in kBytes

getAvgCpuIdle

public int getAvgCpuIdle()

Returns:

Average idle of all CPUs of the node in percent, e.g. 40 is 40% idle

setCpu

public void setCpu(int id,
                   int idle)

Add or change the current CPU idle value

startElement

public final boolean startElement(java.lang.String uri,
                                  java.lang.String localName,
                                  java.lang.String name,
                                  java.lang.StringBuffer character,
                                  org.xml.sax.Attributes attrs)

Called for SAX master start tag

Returns:

true if ok, false on error

endElement

public final void endElement(java.lang.String uri,
                             java.lang.String localName,
                             java.lang.String name,
                             java.lang.StringBuffer character)

Handle SAX parsed end element

toXml

public final java.lang.String toXml()

Dump state of this object into a XML ASCII string.

toXml

public final java.lang.String toXml(java.lang.String extraOffset)

Dump state of this object into a XML ASCII string.

Parameters:

extraOffset - indenting of tags for nice output