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src/org/cloudbus/cloudsim/power/PowerHost.java

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+/*
+ * 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) 2009-2012, The University of Melbourne, Australia
+ */
+
+package org.cloudbus.cloudsim.power;
+
+import java.util.List;
+
+import org.cloudbus.cloudsim.HostDynamicWorkload;
+import org.cloudbus.cloudsim.Pe;
+import org.cloudbus.cloudsim.VmScheduler;
+import org.cloudbus.cloudsim.power.models.PowerModel;
+import org.cloudbus.cloudsim.provisioners.BwProvisioner;
+import org.cloudbus.cloudsim.provisioners.RamProvisioner;
+
+/**
+ * PowerHost class enables simulation of power-aware hosts.
+ * 
+ * If you are using any algorithms, policies or workload included in the power package please cite
+ * the following paper:
+ * 
+ * Anton Beloglazov, and Rajkumar Buyya, "Optimal Online Deterministic Algorithms and Adaptive
+ * Heuristics for Energy and Performance Efficient Dynamic Consolidation of Virtual Machines in
+ * Cloud Data Centers", Concurrency and Computation: Practice and Experience (CCPE), Volume 24,
+ * Issue 13, Pages: 1397-1420, John Wiley & Sons, Ltd, New York, USA, 2012
+ * 
+ * @author Anton Beloglazov
+ * @since CloudSim Toolkit 2.0
+ */
+public class PowerHost extends HostDynamicWorkload {
+
+	/** The power model. */
+	private PowerModel powerModel;
+
+	/**
+	 * Instantiates a new host.
+	 * 
+	 * @param id the id
+	 * @param ramProvisioner the ram provisioner
+	 * @param bwProvisioner the bw provisioner
+	 * @param storage the storage
+	 * @param peList the pe list
+	 * @param vmScheduler the VM scheduler
+	 */
+	public PowerHost(
+			int id,
+			RamProvisioner ramProvisioner,
+			BwProvisioner bwProvisioner,
+			long storage,
+			List<? extends Pe> peList,
+			VmScheduler vmScheduler,
+			PowerModel powerModel) {
+		super(id, ramProvisioner, bwProvisioner, storage, peList, vmScheduler);
+		setPowerModel(powerModel);
+	}
+
+	/**
+	 * Gets the power. For this moment only consumed by all PEs.
+	 * 
+	 * @return the power
+	 */
+	public double getPower() {
+		return getPower(getUtilizationOfCpu());
+	}
+
+	/**
+	 * Gets the power. For this moment only consumed by all PEs.
+	 * 
+	 * @param utilization the utilization
+	 * @return the power
+	 */
+	protected double getPower(double utilization) {
+		double power = 0;
+		try {
+			power = getPowerModel().getPower(utilization);
+		} catch (Exception e) {
+			e.printStackTrace();
+			System.exit(0);
+		}
+		return power;
+	}
+
+	/**
+	 * Gets the max power that can be consumed by the host.
+	 * 
+	 * @return the max power
+	 */
+	public double getMaxPower() {
+		double power = 0;
+		try {
+			power = getPowerModel().getPower(1);
+		} catch (Exception e) {
+			e.printStackTrace();
+			System.exit(0);
+		}
+		return power;
+	}
+
+	/**
+	 * Gets the energy consumption using linear interpolation of the utilization change.
+	 * 
+	 * @param fromUtilization the from utilization
+	 * @param toUtilization the to utilization
+	 * @param time the time
+	 * @return the energy
+	 */
+	public double getEnergyLinearInterpolation(double fromUtilization, double toUtilization, double time) {
+		if (fromUtilization == 0) {
+			return 0;
+		}
+		double fromPower = getPower(fromUtilization);
+		double toPower = getPower(toUtilization);
+		return (fromPower + (toPower - fromPower) / 2) * time;
+	}
+
+	/**
+	 * Sets the power model.
+	 * 
+	 * @param powerModel the new power model
+	 */
+	protected void setPowerModel(PowerModel powerModel) {
+		this.powerModel = powerModel;
+	}
+
+	/**
+	 * Gets the power model.
+	 * 
+	 * @return the power model
+	 */
+	public PowerModel getPowerModel() {
+		return powerModel;
+	}
+
+}