- Added: collecting state data for hosts and VMs

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/Host.java

@@ -46,7 +46,7 @@ public class Host {
 	private VmScheduler vmScheduler;
 
 	/** The vm list. */
-	private List<? extends Vm> vmList;
+	private final List<? extends Vm> vmList = new ArrayList<Vm>();
 
 	/** The pe list. */
 	private List<? extends Pe> peList;
@@ -55,8 +55,8 @@ public class Host {
     private boolean failed;
 
 	/** The vms migrating in. */
-	private List<Vm> vmsMigratingIn;
-	
+	private final List<Vm> vmsMigratingIn = new ArrayList<Vm>();
+
 	/** The datacenter where the host is placed. */
 	private Datacenter datacenter;
 
@@ -83,7 +83,6 @@ public class Host {
 		setVmScheduler(vmScheduler);
 
 		setPeList(peList);
-		setVmList(new ArrayList<Vm>());
 		setFailed(false);
 	}
 
@@ -118,13 +117,13 @@ public class Host {
 	 */
 	public void addMigratingInVm(Vm vm) {
 		vm.setInMigration(true);
-		
+
 		if (!getVmsMigratingIn().contains(vm)) {
 			if (getStorage() < vm.getSize()){
 				Log.printLine("[VmScheduler.addMigratingInVm] Allocation of VM #" + vm.getId() + " to Host #" + getId() + " failed by storage");
 				System.exit(0);
 			}
-			
+
 			if (!getRamProvisioner().allocateRamForVm(vm, vm.getCurrentRequestedRam())) {
 				Log.printLine("[VmScheduler.addMigratingInVm] Allocation of VM #" + vm.getId() + " to Host #" + getId() + " failed by RAM");
 				System.exit(0);
@@ -142,7 +141,7 @@ public class Host {
 			}
 
 			setStorage(getStorage() - vm.getSize());
-			
+
 			getVmsMigratingIn().add(vm);
 			getVmList().add(vm);
 			updateVmsProcessing(CloudSim.clock());
@@ -210,7 +209,7 @@ public class Host {
 			Log.printLine("[VmScheduler.vmCreate] Allocation of VM #" + vm.getId() + " to Host #" + getId() + " failed by storage");
 			return false;
 		}
-		
+
 		if (!getRamProvisioner().allocateRamForVm(vm, vm.getCurrentRequestedRam())) {
 			Log.printLine("[VmScheduler.vmCreate] Allocation of VM #" + vm.getId() + " to Host #" + getId() + " failed by RAM");
 			return false;
@@ -323,7 +322,7 @@ public class Host {
 	 * @return the free pes number
 	 */
 	public int getFreePesNumber() {
-		return PeList.getFreePesNumber((List<Pe>) getPeList());
+		return PeList.getFreePesNumber(getPeList());
 	}
 
 	/**
@@ -332,7 +331,7 @@ public class Host {
 	 * @return the total mips
 	 */
 	public int getTotalMips() {
-		return PeList.getTotalMips((List<Pe>) getPeList());
+		return PeList.getTotalMips(getPeList());
 	}
 
 	/**
@@ -512,7 +511,7 @@ public class Host {
 	protected void setVmScheduler(VmScheduler vmScheduler) {
 		this.vmScheduler = vmScheduler;
 	}
-	
+
 	/**
 	 * Gets the pe list.
 	 *
@@ -545,16 +544,6 @@ public class Host {
 		return (List<T>) vmList;
 	}
 
-	/**
-	 * Sets the vm list.
-	 *
-	 * @param <T> the generic type
-	 * @param vmList the new vm list
-	 */
-	protected <T extends Vm> void setVmList(List<T> vmList) {
-		this.vmList = vmList;
-	}
-
 	/**
 	 * Sets the storage.
 	 *
@@ -588,7 +577,7 @@ public class Host {
     public boolean setFailed(String resName, boolean failed) {
         // all the PEs are failed (or recovered, depending on fail)
     	this.failed = failed;
-        PeList.setStatusFailed((List<Pe>) getPeList(), resName, getId(), failed);
+        PeList.setStatusFailed(getPeList(), resName, getId(), failed);
         return true;
     }
 
@@ -602,7 +591,7 @@ public class Host {
     public boolean setFailed(boolean failed) {
         // all the PEs are failed (or recovered, depending on fail)
     	this.failed = failed;
-        PeList.setStatusFailed((List<Pe>) getPeList(), failed);
+        PeList.setStatusFailed(getPeList(), failed);
         return true;
     }
 
@@ -617,7 +606,7 @@ public class Host {
      * @post $none
      */
     public boolean setPeStatus(int peId, int status) {
-        return PeList.setPeStatus((List<Pe>) getPeList(), peId, status);
+        return PeList.setPeStatus(getPeList(), peId, status);
     }
 
 	/**
@@ -629,15 +618,6 @@ public class Host {
 		return vmsMigratingIn;
 	}
 
-	/**
-	 * Sets the vms migrating in.
-	 *
-	 * @param vmsMigratingIn the new vms migrating in
-	 */
-	protected void setVmsMigratingIn(List<Vm> vmsMigratingIn) {
-		this.vmsMigratingIn = vmsMigratingIn;
-	}
-	
 	/**
 	 * Gets the data center.
 	 * @return the data center where the host runs
@@ -645,7 +625,7 @@ public class Host {
 	public Datacenter getDatacenter(){
 		return this.datacenter;
 	}
-	
+
 	/**
 	 * Sets the data center.
 	 *

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/HostDynamicWorkload.java

@@ -9,9 +9,8 @@
 package org.cloudbus.cloudsim;
 
 import java.util.ArrayList;
-import java.util.HashMap;
+import java.util.LinkedList;
 import java.util.List;
-import java.util.Map;
 
 import org.cloudbus.cloudsim.core.CloudSim;
 import org.cloudbus.cloudsim.lists.PeList;
@@ -32,8 +31,8 @@ public class HostDynamicWorkload extends Host {
 	/** The previous utilization mips. */
 	private double previousUtilizationMips;
 
-	/** The under allocated mips. */
-	private Map<String, List<List<Double>>> underAllocatedMips;
+	/** The state history. */
+	private final List<HostStateHistoryEntry> stateHistory = new LinkedList<HostStateHistoryEntry>();
 
 	/**
 	 * Instantiates a new host.
@@ -55,8 +54,6 @@ public class HostDynamicWorkload extends Host {
 		super(id, ramProvisioner, bwProvisioner, storage, peList, vmScheduler);
 		setUtilizationMips(0);
 		setPreviousUtilizationMips(0);
-		setUnderAllocatedMips(new HashMap<String, List<List<Double>>>());
-		setVmsMigratingIn(new ArrayList<Vm>());
 	}
 
 	/* (non-Javadoc)
@@ -67,6 +64,7 @@ public class HostDynamicWorkload extends Host {
 		double smallerTime = super.updateVmsProcessing(currentTime);
 		setPreviousUtilizationMips(getUtilizationMips());
 		setUtilizationMips(0);
+		double hostTotalRequestedMips = 0;
 
 		for (Vm vm : getVmList()) {
 			getVmScheduler().deallocatePesForVm(vm);
@@ -97,6 +95,8 @@ public class HostDynamicWorkload extends Host {
 				Log.formatLine("%.2f: [Host #" + getId() + "] MIPS for VM #" + vm.getId() + " by PEs (" + getPesNumber() + " * " + getVmScheduler().getPeCapacity() + ")." + pesString, CloudSim.clock());
 			}
 
+			vm.addStateHistoryEntry(currentTime, totalAllocatedMips, totalRequestedMips, (vm.isInMigration() && !getVmsMigratingIn().contains(vm)));
+
 			if (getVmsMigratingIn().contains(vm)) {
 				Log.formatLine("%.2f: [Host #" + getId() + "] VM #" + vm.getId() + " is being migrated to Host #" + getId(), CloudSim.clock());
 			} else {
@@ -104,8 +104,6 @@ public class HostDynamicWorkload extends Host {
 					Log.formatLine("%.2f: [Host #" + getId() + "] Under allocated MIPS for VM #" + vm.getId() + ": %.2f", CloudSim.clock(), totalRequestedMips - totalAllocatedMips);
 				}
 
-				updateUnderAllocatedMips(vm, totalRequestedMips, totalAllocatedMips);
-
 				if (vm.isInMigration()) {
 					Log.formatLine("%.2f: [Host #" + getId() + "] VM #" + vm.getId() + " is in migration", CloudSim.clock());
 					totalAllocatedMips /= 0.9; // performance degradation due to migration - 10%
@@ -113,8 +111,11 @@ public class HostDynamicWorkload extends Host {
 			}
 
 			setUtilizationMips(getUtilizationMips() + totalAllocatedMips);
+			hostTotalRequestedMips += totalRequestedMips;
 		}
 
+		addStateHistoryEntry(currentTime, getUtilizationMips(), hostTotalRequestedMips, (getUtilizationMips() > 0));
+
 		return smallerTime;
 	}
 
@@ -175,29 +176,6 @@ public class HostDynamicWorkload extends Host {
 		return getBwProvisioner().getUsedBw();
 	}
 
-	/**
-	 * Update under allocated mips.
-	 *
-	 * @param vm the vm
-	 * @param requested the requested
-	 * @param allocated the allocated
-	 */
-	protected void updateUnderAllocatedMips(Vm vm, double requested, double allocated) {
-		List<List<Double>> underAllocatedMipsArray;
-		List<Double> underAllocatedMips = new ArrayList<Double>();
-		underAllocatedMips.add(requested);
-		underAllocatedMips.add(allocated);
-
-		if (getUnderAllocatedMips().containsKey(vm.getUid())) {
-			underAllocatedMipsArray = getUnderAllocatedMips().get(vm.getUid());
-		} else {
-			underAllocatedMipsArray = new ArrayList<List<Double>>();
-		}
-
-		underAllocatedMipsArray.add(underAllocatedMips);
-		getUnderAllocatedMips().put(vm.getUid(), underAllocatedMipsArray);
-	}
-
 	/**
 	 * Get current utilization of CPU in percentage.
 	 *
@@ -269,22 +247,25 @@ public class HostDynamicWorkload extends Host {
 		this.previousUtilizationMips = previousUtilizationMips;
 	}
 
-    /**
-     * Gets the under allocated mips.
-     *
-     * @return the under allocated mips
-     */
-    public Map<String, List<List<Double>>> getUnderAllocatedMips() {
-		return underAllocatedMips;
-	}
-
 	/**
-	 * Sets the under allocated mips.
+	 * Gets the state history.
 	 *
-	 * @param underAllocatedMips the under allocated mips
+	 * @return the state history
 	 */
-	protected void setUnderAllocatedMips(Map<String, List<List<Double>>> underAllocatedMips) {
-		this.underAllocatedMips = underAllocatedMips;
+	public List<HostStateHistoryEntry> getStateHistory() {
+		return stateHistory;
+	}
+
+    /**
+     * Adds the state history entry.
+     *
+     * @param time the time
+     * @param allocatedMips the allocated mips
+     * @param requestedMips the requested mips
+     * @param isActive the is active
+     */
+    public void addStateHistoryEntry(double time, double allocatedMips, double requestedMips, boolean isActive) {
+		getStateHistory().add(new HostStateHistoryEntry(time, allocatedMips, requestedMips, isActive));
 	}
 
 }

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/HostStateHistoryEntry.java

+/*
+ * Title:        CloudSim Toolkit
+ * Description:  CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
+ * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html
+ *
+ * Copyright (c) 2009-2011, The University of Melbourne, Australia
+ */
+
+package org.cloudbus.cloudsim;
+
+/**
+ * The Class HostStateHistoryEntry.
+ *
+ * @author		Anton Beloglazov
+ * @since		CloudSim Toolkit 2.1.2
+ */
+public class HostStateHistoryEntry {
+
+	/** The time. */
+	private double time;
+
+	/** The allocated mips. */
+	private double allocatedMips;
+
+	/** The requested mips. */
+	private double requestedMips;
+
+		/** The is active. */
+	private boolean isActive;
+
+	/**
+	 * Instantiates a new vm mips allocation history entry.
+	 *
+	 * @param time the time
+	 * @param allocatedMips the allocated mips
+	 * @param requestedMips the requested mips
+	 * @param isActive the is active
+	 */
+	public HostStateHistoryEntry(double time, double allocatedMips, double requestedMips, boolean isActive) {
+		setTime(time);
+		setAllocatedMips(allocatedMips);
+		setRequestedMips(requestedMips);
+		setActive(isActive);
+	}
+
+	/**
+	 * Sets the time.
+	 *
+	 * @param time the new time
+	 */
+	protected void setTime(double time) {
+		this.time = time;
+	}
+
+	/**
+	 * Gets the time.
+	 *
+	 * @return the time
+	 */
+	public double getTime() {
+		return time;
+	}
+
+	/**
+	 * Sets the allocated mips.
+	 *
+	 * @param allocatedMips the new allocated mips
+	 */
+	protected void setAllocatedMips(double allocatedMips) {
+		this.allocatedMips = allocatedMips;
+	}
+
+	/**
+	 * Gets the allocated mips.
+	 *
+	 * @return the allocated mips
+	 */
+	public double getAllocatedMips() {
+		return allocatedMips;
+	}
+
+	/**
+	 * Sets the requested mips.
+	 *
+	 * @param requestedMips the new requested mips
+	 */
+	protected void setRequestedMips(double requestedMips) {
+		this.requestedMips = requestedMips;
+	}
+
+	/**
+	 * Gets the requested mips.
+	 *
+	 * @return the requested mips
+	 */
+	public double getRequestedMips() {
+		return requestedMips;
+	}
+
+	/**
+	 * Sets the active.
+	 *
+	 * @param isActive the new active
+	 */
+	public void setActive(boolean isActive) {
+		this.isActive = isActive;
+	}
+
+	/**
+	 * Checks if is active.
+	 *
+	 * @return true, if is active
+	 */
+	public boolean isActive() {
+		return isActive;
+	}
+
+}

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/Vm.java

@@ -9,6 +9,7 @@
 package org.cloudbus.cloudsim;
 
 import java.util.ArrayList;
+import java.util.LinkedList;
 import java.util.List;
 
 /**
@@ -29,6 +30,7 @@ public class Vm {
 	/** The user id. */
 	private int userId;
 
+	/** The uid. */
 	private String uid;
 
 	/** The size. */
@@ -73,20 +75,21 @@ public class Vm {
 	/** The recently created. */
 	private boolean recentlyCreated;
 
+	/** The mips allocation history. */
+	private final List<VmStateHistoryEntry> stateHistory = new LinkedList<VmStateHistoryEntry>();
+
 	/**
 	 * Creates a new VMCharacteristics object.
 	 *
 	 * @param id unique ID of the VM
 	 * @param userId ID of the VM's owner
-	 * @param size amount of storage
+	 * @param mips the mips
+	 * @param pesNumber amount of CPUs
 	 * @param ram amount of ram
 	 * @param bw amount of bandwidth
-	 * @param pesNumber amount of CPUs
+	 * @param size amount of storage
 	 * @param vmm virtual machine monitor
 	 * @param cloudletScheduler cloudletScheduler policy for cloudlets
-	 * @param priority the priority
-	 * @param mips the mips
-	 *
 	 * @pre id >= 0
 	 * @pre userId >= 0
 	 * @pre size > 0
@@ -179,7 +182,7 @@ public class Vm {
 		}
 		return totalRequestedMips;
 	}
-	
+
 	/**
 	 * Gets the current requested max mips among all virtual PEs.
 	 *
@@ -235,6 +238,11 @@ public class Vm {
 		return getTotalUtilizationOfCpu(time) * getMips();
 	}
 
+	/**
+	 * Sets the uid.
+	 *
+	 * @param uid the new uid
+	 */
 	public void setUid(String uid) {
 		this.uid = uid;
 	}
@@ -576,4 +584,25 @@ public class Vm {
 		this.recentlyCreated = recentlyCreated;
 	}
 
+    /**
+     * Gets the state history.
+     *
+     * @return the state history
+     */
+    public List<VmStateHistoryEntry> getStateHistory() {
+		return stateHistory;
+	}
+
+    /**
+     * Adds the state history entry.
+     *
+     * @param time the time
+     * @param allocatedMips the allocated mips
+     * @param requestedMips the requested mips
+     * @param isInMigration the is in migration
+     */
+    public void addStateHistoryEntry(double time, double allocatedMips, double requestedMips, boolean isInMigration) {
+		getStateHistory().add(new VmStateHistoryEntry(time, allocatedMips, requestedMips, isInMigration));
+	}
+
 }

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/VmStateHistoryEntry.java

+/*
+ * Title:        CloudSim Toolkit
+ * Description:  CloudSim (Cloud Simulation) Toolkit for Modeling and Simulation of Clouds
+ * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html
+ *
+ * Copyright (c) 2009-2011, The University of Melbourne, Australia
+ */
+
+package org.cloudbus.cloudsim;
+
+/**
+ * The Class VmMipsAllocationHistoryEntry.
+ *
+ * @author		Anton Beloglazov
+ * @since		CloudSim Toolkit 2.1.2
+ */
+public class VmStateHistoryEntry {
+
+	/** The time. */
+	private double time;
+
+	/** The allocated mips. */
+	private double allocatedMips;
+
+	/** The requested mips. */
+	private double requestedMips;
+
+	/** The is in migration. */
+	private boolean isInMigration;
+
+	/**
+	 * Instantiates a new vm mips allocation history entry.
+	 *
+	 * @param time the time
+	 * @param allocatedMips the allocated mips
+	 * @param requestedMips the requested mips
+	 * @param isInMigration the is in migration
+	 */
+	public VmStateHistoryEntry(double time, double allocatedMips, double requestedMips, boolean isInMigration) {
+		setTime(time);
+		setAllocatedMips(allocatedMips);
+		setRequestedMips(requestedMips);
+		setInMigration(isInMigration);
+	}
+
+	/**
+	 * Sets the time.
+	 *
+	 * @param time the new time
+	 */
+	protected void setTime(double time) {
+		this.time = time;
+	}
+
+	/**
+	 * Gets the time.
+	 *
+	 * @return the time
+	 */
+	public double getTime() {
+		return time;
+	}
+
+	/**
+	 * Sets the allocated mips.
+	 *
+	 * @param allocatedMips the new allocated mips
+	 */
+	protected void setAllocatedMips(double allocatedMips) {
+		this.allocatedMips = allocatedMips;
+	}
+
+	/**
+	 * Gets the allocated mips.
+	 *
+	 * @return the allocated mips
+	 */
+	public double getAllocatedMips() {
+		return allocatedMips;
+	}
+
+	/**
+	 * Sets the requested mips.
+	 *
+	 * @param requestedMips the new requested mips
+	 */
+	protected void setRequestedMips(double requestedMips) {
+		this.requestedMips = requestedMips;
+	}
+
+	/**
+	 * Gets the requested mips.
+	 *
+	 * @return the requested mips
+	 */
+	public double getRequestedMips() {
+		return requestedMips;
+	}
+
+	/**
+	 * Sets the in migration.
+	 *
+	 * @param isInMigration the new in migration
+	 */
+	protected void setInMigration(boolean isInMigration) {
+		this.isInMigration = isInMigration;
+	}
+
+	/**
+	 * Checks if is in migration.
+	 *
+	 * @return true, if is in migration
+	 */
+	public boolean isInMigration() {
+		return isInMigration;
+	}
+
+}

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/power/PowerDatacenter.java

@@ -8,11 +8,8 @@
 
 package org.cloudbus.cloudsim.power;
 
-import java.util.ArrayList;
-import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Map.Entry;
 
 import org.cloudbus.cloudsim.Datacenter;
 import org.cloudbus.cloudsim.DatacenterCharacteristics;
@@ -100,16 +97,16 @@ public class PowerDatacenter extends Datacenter {
 						Vm vm = (Vm) migrate.get("vm");
 						PowerHost targetHost = (PowerHost) migrate.get("host");
 						PowerHost oldHost = (PowerHost) vm.getHost();
-		
+
 						if (oldHost == null) {
 							Log.formatLine("%.2f: Migration of VM #%d to Host #%d is started", currentTime, vm.getId(), targetHost.getId());
 						} else {
 							Log.formatLine("%.2f: Migration of VM #%d from Host #%d to Host #%d is started", currentTime, vm.getId(), oldHost.getId(), targetHost.getId());
 						}
-	
+
 						targetHost.addMigratingInVm(vm);
 						incrementMigrationCount();
-	
+
 						/** VM migration delay = RAM / bandwidth **/
 						// we use BW / 2 to model BW available for migration purposes, the other half of BW is for VM communication
 						// around 16 seconds for 1024 MB using 1 Gbit/s network
@@ -127,7 +124,7 @@ public class PowerDatacenter extends Datacenter {
 			setLastProcessTime(currentTime);
 		}
 	}
-	
+
 	/**
 	 * Update cloudet processing without scheduling future events.
 	 *
@@ -169,9 +166,9 @@ public class PowerDatacenter extends Datacenter {
 		}
 
 		setPower(getPower() + timeFrameDatacenterEnergy);
-		
+
 		checkCloudletCompletion();
-		
+
 		/** Remove completed VMs **/
 		for (PowerHost host : this.<PowerHost>getHostList()) {
 			for (Vm vm : host.getCompletedVms()) {
@@ -182,19 +179,19 @@ public class PowerDatacenter extends Datacenter {
 		}
 
 		Log.printLine();
-		
+
 		setLastProcessTime(currentTime);
 		return minTime;
 	}
-	
+
 	/* (non-Javadoc)
 	 * @see org.cloudbus.cloudsim.Datacenter#processVmMigrate(org.cloudbus.cloudsim.core.SimEvent, boolean)
 	 */
 	@Override
 	protected void processVmMigrate(SimEvent ev, boolean ack) {
-		updateCloudetProcessingWithoutSchedulingFutureEvents();		
+		updateCloudetProcessingWithoutSchedulingFutureEvents();
 		super.processVmMigrate(ev, ack);
-		updateCloudetProcessingWithoutSchedulingFutureEvents();	
+		updateCloudetProcessingWithoutSchedulingFutureEvents();
     }
 
 	/* (non-Javadoc)
@@ -240,25 +237,6 @@ public class PowerDatacenter extends Datacenter {
 		return result;
 	}
 
-	/**
-	 * Gets the under allocated mips.
-	 *
-	 * @return the under allocated mips
-	 */
-	public Map<String, List<List<Double>>> getUnderAllocatedMips() {
-		Map<String, List<List<Double>>> underAllocatedMips = new HashMap<String, List<List<Double>>>();
-		for (PowerHost host : this.<PowerHost>getHostList()) {
-			for (Entry<String, List<List<Double>>> entry : host.getUnderAllocatedMips().entrySet()) {
-				if (!underAllocatedMips.containsKey(entry.getKey())) {
-					underAllocatedMips.put(entry.getKey(), new ArrayList<List<Double>>());
-				}
-				underAllocatedMips.get(entry.getKey()).addAll(entry.getValue());
-
-			}
-		}
-		return underAllocatedMips;
-	}
-
 	/**
 	 * Checks if is disable migrations.
 	 *