Finish VerticalVmIopsScaling example

Last efforts to implement a functional example of VerticalVmIopsScaling.

cloudsim-plus-examples/src/main/java/org/cloudbus/cloudsim/examples/autonomic/VerticalVmIopsScalingExample.java

@@ -75,7 +75,8 @@ public class VerticalVmIopsScalingExample {
 
 	// Cloudlets
 	private static final int CLOUDLETS = 1;
-	private static final int CLOUDLETS_INITIAL_LENGTH = 100_000;
+	private static final int CLOUDLETS_INITIAL_LENGTH = 1;
+	private static final int CLOUDLETS_INITIAL_LENGTH_IOPS = 500_000;
 	private static final int CLOUDLET_PES = 1;
 
 	private final CloudSim simulation;
@@ -84,7 +85,6 @@ public class VerticalVmIopsScalingExample {
 	private List<Vm> vmList;
 	private List<Cloudlet> cloudletList;
 
-	private int createdCloudlets;
 	private int createdVms;
 
 	public static void main(String[] args) {
@@ -106,7 +106,7 @@ public class VerticalVmIopsScalingExample {
 		// cloudletList = new ArrayList<>(CLOUDLETS);
 		cloudletList = createCloudlets();
 
-		simulation = new CloudSim();
+		simulation = new CloudSim(SCHEDULING_INTERVAL);
 		simulation.addOnClockTickListener(this::onClockTickListener);
 
 		createDatacenter();
@@ -133,9 +133,8 @@ public class VerticalVmIopsScalingExample {
 	 */
 	private void onClockTickListener(EventInfo evt) {
 		vmList.forEach(vm -> {
-			Log.printFormatted("\t\tTime %6.1f: Vm %d Disk Usage: %6.2f%% (%2d IOPS. Running Cloudlets: #%d)\n",
+			Log.printFormatted("\t\tTime %6.1f: Vm %d (%2d IOPS. Running Cloudlets: #%d)\n",
 					evt.getTime(), vm.getId(),
-					vm.getIopsVerticalScaling().getResource().getPercentUtilization() * 100.0,
 					vm.getIops().getCapacity(), vm.getCloudletScheduler().getCloudletExecList().size());
 		});
 	}
@@ -154,7 +153,9 @@ public class VerticalVmIopsScalingExample {
 	 */
 	private void createDatacenter() {
 		for (int i = 0; i < HOSTS; i++) {
-			hostList.add(createHost());
+			Host host = createHost();
+			host.setId(i);
+			hostList.add(host);
 		}
 
 		Datacenter dc0 = new DatacenterSimple(simulation, hostList, new VmAllocationPolicySimple());
@@ -309,7 +310,7 @@ public class VerticalVmIopsScalingExample {
 		UtilizationModel utilization = new UtilizationModelFull();
 
 		for (int i = 0; i < CLOUDLETS; i++) {
-			Cloudlet cloudlet = new CloudletSimple(i, CLOUDLETS_INITIAL_LENGTH, CLOUDLET_PES).setFileSize(1024)
+			Cloudlet cloudlet = new CloudletSimple(i, CLOUDLETS_INITIAL_LENGTH, CLOUDLETS_INITIAL_LENGTH_IOPS, CLOUDLET_PES).setFileSize(1024)
 					.setOutputSize(1024).setUtilizationModel(utilization).setUtilizationModelIops(utilization);
 			list.add(cloudlet);
 		}

cloudsim-plus/src/main/java/org/cloudbus/cloudsim/allocationpolicies/VmAllocationPolicyAbstract.java

@@ -280,19 +280,24 @@ public abstract class VmAllocationPolicyAbstract implements VmAllocationPolicy {
 
         final ResourceProvisioner provisioner = scaling.getVm().getHost().getProvisioner(resourceClass);
         final ResourceManageable vmResource = scaling.getVm().getResource(resourceClass);
+
+        final double utilization = vmResource.getPercentUtilization()*100;
+
         final double newTotalVmResource = (double) vmResource.getCapacity() + extraAmountToAllocate;
         if(!provisioner.allocateResourceForVm(scaling.getVm(), newTotalVmResource)){
             showResourceIsUnavailable(scaling);
             return false;
         }
 
+        scaling.getVm().setIops((long) newTotalVmResource);
+
         Log.printFormattedLine(
             "%.2f: %s: %.0f more %s allocated to Vm %d: new capacity is %d. Current resource usage is %.2f%%",
             scaling.getVm().getSimulation().clock(),
             scaling.getClass().getSimpleName(),
             extraAmountToAllocate, resourceClass.getSimpleName(),
             scaling.getVm().getId(), vmResource.getCapacity(),
-            vmResource.getPercentUtilization()*100);
+            utilization);
         return true;
     }
 

cloudsim-plus/src/main/java/org/cloudbus/cloudsim/provisioners/ResourceProvisionerNull.java

@@ -13,8 +13,6 @@ import org.cloudbus.cloudsim.vms.Vm;
 final class ResourceProvisionerNull implements ResourceProvisioner {
 	
 	public ResourceProvisionerNull() {
-		// TODO Auto-generated constructor stub
-		System.out.println("Null created");
 	}
 	
     @Override public boolean allocateResourceForVm(Vm vm, long newTotalVmResourceCapacity) {

cloudsim-plus/src/main/java/org/cloudsimplus/autoscaling/VerticalVmScalingSimple.java

@@ -171,8 +171,6 @@ public class VerticalVmScalingSimple extends VmScalingAbstract implements Vertic
 
     @Override
     public boolean isVmUnderloaded() {
-    	Vm vm = getVm();
-    	Resource r = getResource();
         return getResource().getPercentUtilization() < lowerUtilizationThresholdFunction.apply(getVm());
     }