org.ow2.proactive.jmx

Class RRDDataStore

java.lang.Object

java.lang.Thread

org.ow2.proactive.jmx.RRDDataStore

All Implemented Interfaces:

Runnable

public class RRDDataStore
extends Thread

This class (thread) dump all properties of MBean to RRD data base with specific period.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

Thread.State, Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
protected String	dataBaseFile
protected HashMap<String,String>	dataSources
protected org.apache.log4j.Logger	logger
protected int	step
protected boolean	terminate

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Modifier	Constructor and Description
	RRDDataStore(StandardMBean mbean, String dataBaseFilePath, int step, org.apache.log4j.Logger logger) Initializes a new RRD data base if it's not exist.
protected	RRDDataStore(String dataBaseFilePath, int step, org.apache.log4j.Logger logger)

Method Summary

Modifier and Type	Method and Description
byte[]	getBytes() Converts the data base into the bytes array in order to send it to a client.
protected void	initDatabase()
void	run() Periodically dumps the new mbean state to the data base
void	terminate() Terminates the thread activity.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

step

protected int step

dataBaseFile

protected String dataBaseFile

dataSources

protected final HashMap<String,String> dataSources

terminate

protected volatile boolean terminate

logger

protected org.apache.log4j.Logger logger

Constructor Detail

RRDDataStore

protected RRDDataStore(String dataBaseFilePath,
                       int step,
                       org.apache.log4j.Logger logger)

RRDDataStore

public RRDDataStore(StandardMBean mbean,
                    String dataBaseFilePath,
                    int step,
                    org.apache.log4j.Logger logger)
             throws IOException

Initializes a new RRD data base if it's not exist.

Parameters:

mbean - is the source of chronological data

dataBaseFilePath - is the path to the file with the rrd data base

step - is the data base refresh period

Throws:

IOException - is thrown when the data base exists but cannot be read

Method Detail

initDatabase

protected void initDatabase()
                     throws IOException

Throws:

IOException

run

public void run()

Periodically dumps the new mbean state to the data base

Specified by:

run in interface Runnable

Overrides:

run in class Thread

getBytes

public byte[] getBytes()
                throws IOException

Converts the data base into the bytes array in order to send it to a client.

Returns:

bytes array

Throws:

IOException - when file cannot be read

terminate

public void terminate()

Terminates the thread activity.