/**
* 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;
}
/**
* Creates instances of CloudSim's DatacenterBroker class from a list of customer registers.
*
* @param customerList a list of customer instances.
* @return a map containing names of customers as keys and DatacenterBroker instances as values.
* @since 1.0
*/
static HashMap<String, DatacenterBroker> createBrokers() {
List<CustomerRegistry> customerList = CustomerRegistryBusiness.getListOfCustomers();
HashMap<String, DatacenterBroker> map = new HashMap<String, DatacenterBroker>();
try {
for (CustomerRegistry cr : customerList) {
UtilizationProfile up = cr.getUtilizationProfile();
String name = cr.getName();
Optional<DatacenterBroker> broker =
DATACENTER_BROKER.getExtensionInstanceByName(up.getBrokerPolicyAlias(), name);
if (!broker.isPresent()) {
Dialog.showErrorMessage(
null, format("Error on loading datacenter broker [%s]", up.getBrokerPolicyAlias()));
return null;
}
int brokerId = broker.get().getId();
List<Vm> vmList = createVms(cr.getVmList(), brokerId);
if (vmList == null) {
return null;
}
broker.get().submitVmList(vmList);
List<Cloudlet> cloudletList =
createCloudlets(up, brokerId, new CustomerRegistryDAO().getNumOfVms(cr.getId()));
if (cloudletList == null) {
return null;
}
broker.get().submitCloudletList(cloudletList);
map.put(cr.getName(), broker.get());
}
} catch (IOException | ServiceDeniedException ex) {
LOG.error(ex.getMessage(), ex);
}
return map;
}