Package org.btrplace.scheduler.choco.constraint.migration

Class CMinMigrations

java.lang.Object

org.btrplace.scheduler.choco.constraint.migration.CMinMigrations

All Implemented Interfaces:

ChocoConstraint, CObjective, Injectable, MisplacedVMsEstimator

public class CMinMigrations
extends Object
implements CObjective

Implements MinMigrations. Currently, same heuristics that with MinMttr but a different objective

Author:

Fabien Hermenier

Constructor Summary

Constructors

Constructor	Description
CMinMigrations()
CMinMigrations(MinMigrations m)	Make a new objective.

Method Summary

Modifier and Type	Method	Description
Set<VM>	getMisPlacedVMs(Instance i)	Get the VMs that are supposed to be mis-placed.
boolean	inject(Parameters ps, ReconfigurationProblem p)	Inject the constraint into the problem.
void	postCostConstraints()	Post the constraints related to the objective.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

CMinMigrations

public CMinMigrations(MinMigrations m)

Make a new objective.

Parameters:

m - the user-side objective.

CMinMigrations

public CMinMigrations()

Method Details

inject

public boolean inject(Parameters ps, ReconfigurationProblem p) throws SchedulerException

Description copied from interface: Injectable

Inject the constraint into the problem.

Specified by:

inject in interface Injectable

Parameters:

ps - the scheduler parameters

p - the problem

Returns:

true if the injection succeeded, false if the problem is sure to not have a solution

Throws:

SchedulerException - if an error occurred while injecting.

getMisPlacedVMs

public Set<VM> getMisPlacedVMs(Instance i)

Description copied from interface: MisplacedVMsEstimator

Get the VMs that are supposed to be mis-placed.

Specified by:

getMisPlacedVMs in interface MisplacedVMsEstimator

Parameters:

i - the instance to inspect

Returns:

a set of VMs identifier that may be empty (when no VMs are misplaced)

postCostConstraints

public void postCostConstraints()

Description copied from interface: CObjective

Post the constraints related to the objective. This method is decoupled from Injectable.inject(org.btrplace.scheduler.choco.Parameters, org.btrplace.scheduler.choco.ReconfigurationProblem) to allow to postpone the constraint posting to the last moment.

Specified by:

postCostConstraints in interface CObjective

toString

public String toString()

Overrides:

toString in class Object