/*
* Title: CloudSim Toolkit
* Description: CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
* Licence: GPL - http://www.gnu.org/copyleft/gpl.html
*
* Copyright (c) 2009-2012, The University of Melbourne, Australia
*/
package org.cloudbus.cloudsim.power;
import java.util.ArrayList;
import java.util.List;
import org.cloudbus.cloudsim.Vm;
/**
* An abstract VM selection policy used to select VMs from a list of migratable VMs.
* The selection is defined by sub classes.
*
* <br/>If you are using any algorithms, policies or workload included in the power package please cite
* the following paper:<br/>
*
* <ul>
* <li><a href="http://dx.doi.org/10.1002/cpe.1867">Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive
* Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in
* Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24,
* Issue 13, Pages: 1397-1420, John Wiley & Sons, Ltd, New York, USA, 2012</a>
* </ul>
*
* @author Anton Beloglazov
* @since CloudSim Toolkit 3.0
*/
public abstract class PowerVmSelectionPolicy {
/**
* Gets a VM to migrate from a given host.
*
* @param host the host
* @return the vm to migrate
*/
public abstract Vm getVmToMigrate(PowerHost host);
/**
* Gets the list of migratable VMs from a given host.
*
* @param host the host
* @return the list of migratable VMs
*/
protected List<PowerVm> getMigratableVms(PowerHost host) {
List<PowerVm> migratableVms = new ArrayList<PowerVm>();
for (PowerVm vm : host.<PowerVm> getVmList()) {
if (!vm.isInMigration()) {
migratableVms.add(vm);
}
}
return migratableVms;
}
}