Commit 970ef331 authored by Kaio Oliveira's avatar Kaio Oliveira
Browse files

Add example class for the new AllocationPolicy

As we finished the unit tests for VmAllocationPolicyMigrationSla, we
move on the implementation process by providing a functional example
for the AllocationPolicy.
parent cb02f7ef
package org.cloudbus.cloudsim.examples.autonomics;
import java.util.ArrayList;
import java.util.List;
import org.cloudbus.cloudsim.allocationpolicies.VmAllocationPolicyFirstFit;
import org.cloudbus.cloudsim.allocationpolicies.migration.VmAllocationPolicyMigrationSla;
import org.cloudbus.cloudsim.brokers.DatacenterBroker;
import org.cloudbus.cloudsim.brokers.DatacenterBrokerSimple;
import org.cloudbus.cloudsim.cloudlets.Cloudlet;
import org.cloudbus.cloudsim.cloudlets.CloudletSimple;
import org.cloudbus.cloudsim.core.CloudSim;
import org.cloudbus.cloudsim.datacenters.Datacenter;
import org.cloudbus.cloudsim.datacenters.DatacenterSimple;
import org.cloudbus.cloudsim.hosts.Host;
import org.cloudbus.cloudsim.hosts.HostSimple;
import org.cloudbus.cloudsim.provisioners.PeProvisionerSimple;
import org.cloudbus.cloudsim.provisioners.ResourceProvisioner;
import org.cloudbus.cloudsim.provisioners.ResourceProvisionerSimple;
import org.cloudbus.cloudsim.resources.Pe;
import org.cloudbus.cloudsim.resources.PeSimple;
import org.cloudbus.cloudsim.schedulers.cloudlet.CloudletSchedulerTimeShared;
import org.cloudbus.cloudsim.schedulers.vm.VmScheduler;
import org.cloudbus.cloudsim.schedulers.vm.VmSchedulerTimeShared;
import org.cloudbus.cloudsim.utilizationmodels.UtilizationModel;
import org.cloudbus.cloudsim.utilizationmodels.UtilizationModelFull;
import org.cloudbus.cloudsim.vms.Vm;
import org.cloudbus.cloudsim.vms.VmSimple;
* An example showing the behavior of {@link VmAllocationPolicyMigrationSla},
* which consider the SLA to perform or not perform VM migrations.
* @author Kaio Kassiano Moura Oliveira (@kaiokmo)
public class VmAllocationPolicyMigrationSlaExample {
private static final String LOOSE = "LOOSE";
private static final String TIGHT = "TIGHT";
private static final Double IMPRECISION = 0.001;
private static final int HOSTS = 1;
private static final int HOST_PES = 8;
private static final int VMS = 2;
private static final int VM_PES = 4;
private static final int CLOUDLETS = 4;
private static final int CLOUDLET_PES = 10;
private static final int CLOUDLET_LENGTH = 10000;
private final CloudSim simulation;
private DatacenterBroker broker0;
private List<Vm> vmList;
private List<Cloudlet> cloudletList;
private Datacenter datacenter0;
public static void main(String[] args) {
new VmAllocationPolicyMigrationSlaExample();
public VmAllocationPolicyMigrationSlaExample() {
simulation = new CloudSim();
datacenter0 = createDatacenter();
//Creates a broker that is a software acting on behalf a cloud customer to manage his/her VMs and Cloudlets
broker0 = new DatacenterBrokerSimple(simulation);
vmList = createVms();
cloudletList = createCloudlets();
final List<Cloudlet> finishedCloudlets = broker0.getCloudletFinishedList();
new CloudletsTableBuilder(finishedCloudlets).build();
* Creates a Datacenter and its Hosts.
private Datacenter createDatacenter() {
final List<Host> hostList = new ArrayList<>(HOSTS);
for(int i = 0; i < HOSTS; i++) {
Host host = createHost();
final Datacenter dc = new DatacenterSimple(simulation, hostList, new VmAllocationPolicyFirstFit());
return dc;
private Host createHost() {
List<Pe> peList = new ArrayList<>(HOST_PES);
//List of Host's CPUs (Processing Elements, PEs)
for (int i = 0; i < HOST_PES; i++) {
peList.add(new PeSimple(1000, new PeProvisionerSimple()));
final long ram = 2048; //in Megabytes
final long bw = 10000; //in Megabits/s
final long storage = 1000000; //in Megabytes
ResourceProvisioner ramProvisioner = new ResourceProvisionerSimple();
ResourceProvisioner bwProvisioner = new ResourceProvisionerSimple();
VmScheduler vmScheduler = new VmSchedulerTimeShared();
Host host = new HostSimple(ram, bw, storage, peList);
return host;
* Creates a list of VMs.
private List<Vm> createVms() {
final List<Vm> list = new ArrayList<>(VMS);
for (int i = 0; i < VMS; i++) {
Vm vm =
new VmSimple(i, 1000, VM_PES)
.setCloudletScheduler(new CloudletSchedulerTimeShared());
return list;
* Creates a list of Cloudlets.
private List<Cloudlet> createCloudlets() {
final List<Cloudlet> list = new ArrayList<>(CLOUDLETS);
UtilizationModel utilization = new UtilizationModelFull();
for (int i = 0; i < CLOUDLETS; i++) {
Cloudlet cloudlet =
return list;
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