mapping
Class MappingScheme

java.lang.Object
  mapping.MappingScheme

Direct Known Subclasses:

FCFS_MS, Gcu_MS, LPAS_DG_MS, MET_MS, NREP_MS, SLQ_MS

public abstract class MappingScheme
extends java.lang.Object

To add a mapping scheme, A concrete class that extend this abstract class, thus it must implement the methods of this class. This class determines what services should the concrete class provides to the Mapper objects.

Author:

Majd Kokaly

Constructor Summary

MappingScheme(Mapper mapper)
A default constructor

Method Summary

java.lang.String	getDescription()
Mapper	getMapper()
abstract void	handleJobTimeOut(long jobID) The implementation of this method determines what should happen a job times out.
abstract void	serverIsDown(int serverID) The implementation of this method determines what should happen a server goes down.
abstract void	serverIsUp(int serverID) The implementation of this method determines what should happen a server becomes up.
void	setDescription(java.lang.String description)
void	setMapper(Mapper mapper)
abstract void	startMappingScheme() This method is invoked after the servers and the job classes are defined.
abstract void	stopMappingScheme() In this method, the program- mer should define operations that stop the execution of the system processes (e.g mapping and generation).

Methods inherited from class java.lang.Object

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

Constructor Detail

MappingScheme

public MappingScheme(Mapper mapper)

A default constructor

Parameters:

mapper - to set the mapper field.

Method Detail

getDescription

public java.lang.String getDescription()

setDescription

public void setDescription(java.lang.String description)

getMapper

public Mapper getMapper()

setMapper

public void setMapper(Mapper mapper)

startMappingScheme

public abstract void startMappingScheme()

This method is invoked after the servers and the job classes are defined. It is invoked before the start of the operation. In this method, initialization operations are defined. For instance, if the mapping scheme depends on a thread, the thread is initialized and started.

stopMappingScheme

public abstract void stopMappingScheme()

In this method, the program- mer should define operations that stop the execution of the system processes (e.g mapping and generation). This can be useful if the system execution is wished to be restarted after stopping it.

handleJobTimeOut

public abstract void handleJobTimeOut(long jobID)

The implementation of this method determines what should happen a job times out. One way of handling a time-out for instance, is to resubmit the timed-out job. This way was chosen for the implemented schemes.

Parameters:

jobID -

serverIsDown

public abstract void serverIsDown(int serverID)

The implementation of this method determines what should happen a server goes down. For instance, the LPAS_DG policy resolves the LP allocation.

Parameters:

serverID - the serverID of the server that became unavailable

serverIsUp

public abstract void serverIsUp(int serverID)

The implementation of this method determines what should happen a server becomes up. For instance, the LPAS_DG policy resolves the LP allocation.

Parameters:

serverID - the serverID of the server that became unavailable