/**
* Creates instances of CloudSim's Cloudlet class from a customer's utilization profile.
*
* @param ugr the utilization profile.
* @param brokerId the id of the broker that owns the cloudlets.
* @param numOfVms the number of virtual machines.
* @return a list of Cloudlet instances.
* @since 1.0
*/
static List<Cloudlet> createCloudlets(UtilizationProfile ugr, int brokerId, long numOfVms)
throws IOException, ServiceDeniedException {
List<Cloudlet> list = new ArrayList<Cloudlet>();
for (int i = 0; i < numOfVms; i++) {
Optional<UtilizationModel> cpu =
UTILIZATION_MODEL.getExtensionInstanceByName(ugr.getUtilizationModelCpuAlias());
if (!cpu.isPresent()) {
Dialog.showErrorMessage(
null,
format(
"Error on loading the CPU utilization model [%s]",
ugr.getUtilizationModelCpuAlias()));
return null;
}
Optional<UtilizationModel> ram =
UTILIZATION_MODEL.getExtensionInstanceByName(ugr.getUtilizationModelRamAlias());
if (!ram.isPresent()) {
Dialog.showErrorMessage(
null,
format(
"Error on loading the RAM utilization model [%s]",
ugr.getUtilizationModelRamAlias()));
return null;
}
Optional<UtilizationModel> bw =
UTILIZATION_MODEL.getExtensionInstanceByName(ugr.getUtilizationModelBwAlias());
if (!bw.isPresent()) {
Dialog.showErrorMessage(
null,
format(
"Error on loading the bandwidth utilization model [%s]",
ugr.getUtilizationModelBwAlias()));
return null;
}
Cloudlet cloudlet =
new Cloudlet(
i,
(long) ((long) ugr.getLength() * RandomNumberGenerator.getRandomNumbers(1).get(0)),
ugr.getCloudletsPesNumber(),
ugr.getFileSize(),
ugr.getOutputSize(),
cpu.get(),
ram.get(),
bw.get());
cloudlet.setUserId(brokerId);
cloudlet.setVmId(i);
list.add(cloudlet);
}
return list;
}
@Override
public void run() {
int size = getCloudletList().size();
for (int i = 0; i < size; i++) {
Cloudlet cloudlet = (Cloudlet) getCloudletList().get(i);
int vmSize = getVmList().size();
CondorVM closestVm = null; // (CondorVM)getVmList().get(0);
double minTime = Double.MAX_VALUE;
for (int j = 0; j < vmSize; j++) {
CondorVM vm = (CondorVM) getVmList().get(j);
if (vm.getState() == WorkflowSimTags.VM_STATUS_IDLE) {
Job job = (Job) cloudlet;
double time = dataTransferTime(job.getFileList(), cloudlet, vm.getId());
if (time < minTime) {
minTime = time;
closestVm = vm;
}
}
}
if (closestVm != null) {
closestVm.setState(WorkflowSimTags.VM_STATUS_BUSY);
cloudlet.setVmId(closestVm.getId());
getScheduledList().add(cloudlet);
}
}
}
/**
* Creates the cloudlet list.
*
* @param brokerId the broker id
* @param cloudletsNumber the cloudlets number
* @return the list< cloudlet>
*/
public static List<Cloudlet> createCloudletList(int brokerId, int cloudletsNumber) {
List<Cloudlet> list = new ArrayList<Cloudlet>();
long fileSize = 300;
long outputSize = 300;
long seed = RandomConstants.CLOUDLET_UTILIZATION_SEED;
UtilizationModel utilizationModelNull = new UtilizationModelNull();
for (int i = 0; i < cloudletsNumber; i++) {
Cloudlet cloudlet = null;
if (seed == -1) {
cloudlet =
new Cloudlet(
i,
Constants.CLOUDLET_LENGTH,
Constants.CLOUDLET_PES,
fileSize,
outputSize,
new UtilizationModelStochastic(),
utilizationModelNull,
utilizationModelNull);
} else {
cloudlet =
new Cloudlet(
i,
Constants.CLOUDLET_LENGTH,
Constants.CLOUDLET_PES,
fileSize,
outputSize,
new UtilizationModelStochastic(seed * i),
utilizationModelNull,
utilizationModelNull);
}
cloudlet.setUserId(brokerId);
cloudlet.setVmId(i);
list.add(cloudlet);
}
return list;
}
@Override
public void run() {
// Round Robin
for (Iterator it = getCloudletList().iterator(); it.hasNext(); ) {
Cloudlet cloudlet = (Cloudlet) it.next();
boolean stillHasVm = false;
for (Iterator itc = getVmList().iterator(); itc.hasNext(); ) {
CondorVM vm = (CondorVM) itc.next();
if (vm.getState() == WorkflowSimTags.VM_STATUS_IDLE) {
stillHasVm = true;
vm.setState(WorkflowSimTags.VM_STATUS_BUSY);
cloudlet.setVmId(vm.getId());
this.scheduledList.add(cloudlet);
break;
}
}
// no vm available
if (!stillHasVm) {
break;
}
}
}