/**
* Creates instances of CloudSim's PowerDatacenter class from a list of datacenter registries.
*
* @param dcrList a list of datacenter registries.
* @return a map containing names of datacenters as keys and PowerDatacenter instances as values.
* @since 1.0
*/
static HashMap<String, PowerDatacenter> createDatacenters() {
List<DatacenterRegistry> dcrList = DatacenterRegistryBusiness.getListOfDatacenters();
HashMap<String, PowerDatacenter> map = new HashMap<String, PowerDatacenter>();
for (DatacenterRegistry dcr : dcrList) {
List<PowerHost> hostList = createHosts(dcr.getHostList());
if (hostList == null) {
return null;
}
DatacenterCharacteristics chars =
new DatacenterCharacteristics(
dcr.getArchitecture(),
dcr.getOs(),
dcr.getVmm(),
hostList,
dcr.getTimeZone(),
dcr.getCostPerSec(),
dcr.getCostPerMem(),
dcr.getCostPerStorage(),
dcr.getCostPerBw());
LinkedList<Storage> storageList = createStorageList(dcr.getSanList());
try {
Optional<VmAllocationPolicy> allocationPolicy =
VM_ALLOCATION_POLICY.getExtensionInstanceByName(
dcr.getAllocationPolicyAlias(), hostList, dcr);
if (!allocationPolicy.isPresent()) {
Dialog.showErrorMessage(
null,
format(
"Error on loading the allocation policy [%s]", dcr.getAllocationPolicyAlias()));
return null;
}
PowerDatacenter newDC =
new PowerDatacenter(
dcr.getName(),
chars,
allocationPolicy.get(),
storageList,
dcr.getSchedulingInterval(),
dcr.getMonitoringInterval());
newDC.setDisableMigrations(!dcr.isVmMigration());
map.put(dcr.getName(), newDC);
} catch (Exception ex) {
LOG.error("Error on creating data centers. Error message: [{}]", ex.getMessage(), ex);
}
}
return map;
}
/** Creates main() to run this example This example has only one datacenter and one storage */
protected static ComplexDatacenter createDatacenter(String name) {
// Here are the steps needed to create a PowerDatacenter:
// 1. We need to create a list to store one or more
// Machines
List<Host> hostList = new ArrayList<>();
// 2. A Machine contains one or more PEs or CPUs/Cores. Therefore, should
// create a list to store these PEs before creating
// a Machine.
for (int i = 1; i <= 20; i++) {
List<Pe> peList1 = new ArrayList<>();
int mips = 32000;
// 3. Create PEs and add these into the list.
// for a quad-core machine, a list of 4 PEs is required:
for (int j = 0; j < 16; j++) {
peList1.add(new Pe(j, new PeProvisionerSimple(mips)));
}
int hostId = 0;
int ram = 64000; // host memory (MB)
long storage = 1000000; // host storage
int bw = 10000;
hostList.add(
new Host(
hostId,
new RamProvisionerSimple(ram),
new BwProvisionerSimple(bw),
storage,
peList1,
new VmSchedulerTimeShared(peList1))); // This is our first machine
// hostId++;
}
// 4. Create a DatacenterCharacteristics object that stores the
// properties of a data center: architecture, OS, list of
// Machines, allocation policy: time- or space-shared, time zone
// and its price (G$/Pe time unit).
String arch = "x86"; // system architecture
String os = "Linux"; // operating system
String vmm = "Xen";
double time_zone = 10.0; // time zone this resource located
double cost = 3.0; // the cost of using processing in this resource
double costPerMem = 0.05; // the cost of using memory in this resource
double costPerStorage = 0.1; // the cost of using storage in this resource
double costPerBw = 0.1; // the cost of using bw in this resource
LinkedList<Storage> storageList = new LinkedList<>(); // we are not adding SAN devices by now
ComplexDatacenter datacenter = null;
DatacenterCharacteristics characteristics =
new DatacenterCharacteristics(
arch, os, vmm, hostList, time_zone, cost, costPerMem, costPerStorage, costPerBw);
// 5. Finally, we need to create a storage object.
/** The bandwidth within a data center in MB/s. */
int maxTransferRate = 15; // the number comes from the futuregrid site, you can specify your bw
try {
// Here we set the bandwidth to be 15MB/s
HarddriveStorage s1 = new HarddriveStorage(name, 1e12);
s1.setMaxTransferRate(maxTransferRate);
storageList.add(s1);
datacenter =
new ComplexDatacenter(
name, characteristics, new VmAllocationPolicySimple(hostList), storageList, 0);
} catch (Exception e) {
e.printStackTrace();
}
return datacenter;
}
