init

src/org/cloudbus/cloudsim/UtilizationModelPlanetLabInMemory.java

@@ -0,0 +1,97 @@
+package org.cloudbus.cloudsim;
+
+import java.io.BufferedReader;
+import java.io.FileReader;
+import java.io.IOException;
+
+/**
+ * The Class UtilizationModelPlanetLab.
+ */
+public class UtilizationModelPlanetLabInMemory implements UtilizationModel {
+	
+	/** The scheduling interval. */
+	private double schedulingInterval;
+
+	/** The data (5 min * 288 = 24 hours). */
+	private final double[] data; 
+	
+	/**
+	 * Instantiates a new utilization model PlanetLab.
+	 * 
+	 * @param inputPath the input path
+	 * @throws NumberFormatException the number format exception
+	 * @throws IOException Signals that an I/O exception has occurred.
+	 */
+	public UtilizationModelPlanetLabInMemory(String inputPath, double schedulingInterval)
+			throws NumberFormatException,
+			IOException {
+		data = new double[289];
+		setSchedulingInterval(schedulingInterval);
+		BufferedReader input = new BufferedReader(new FileReader(inputPath));
+		int n = data.length;
+		for (int i = 0; i < n - 1; i++) {
+			data[i] = Integer.valueOf(input.readLine()) / 100.0;
+		}
+		data[n - 1] = data[n - 2];
+		input.close();
+	}
+	
+	/**
+	 * Instantiates a new utilization model PlanetLab with variable data samples.
+	 * 
+	 * @param inputPath the input path
+	 * @param dataSamples number of samples in the file
+	 * @throws NumberFormatException the number format exception
+	 * @throws IOException Signals that an I/O exception has occurred.
+	 */
+	public UtilizationModelPlanetLabInMemory(String inputPath, double schedulingInterval, int dataSamples)
+			throws NumberFormatException,
+			IOException {
+		setSchedulingInterval(schedulingInterval);
+		data = new double[dataSamples];
+		BufferedReader input = new BufferedReader(new FileReader(inputPath));
+		int n = data.length;
+		for (int i = 0; i < n - 1; i++) {
+			data[i] = Integer.valueOf(input.readLine()) / 100.0;
+		}
+		data[n - 1] = data[n - 2];
+		input.close();
+	}
+
+	/*
+	 * (non-Javadoc)
+	 * @see cloudsim.power.UtilizationModel#getUtilization(double)
+	 */
+	@Override
+	public double getUtilization(double time) {
+		if (time % getSchedulingInterval() == 0) {
+			return data[(int) time / (int) getSchedulingInterval()];
+		}
+		int time1 = (int) Math.floor(time / getSchedulingInterval());
+		int time2 = (int) Math.ceil(time / getSchedulingInterval());
+		double utilization1 = data[time1];
+		double utilization2 = data[time2];
+		double delta = (utilization2 - utilization1) / ((time2 - time1) * getSchedulingInterval());
+		double utilization = utilization1 + delta * (time - time1 * getSchedulingInterval());
+		return utilization;
+
+	}
+
+	/**
+	 * Sets the scheduling interval.
+	 * 
+	 * @param schedulingInterval the new scheduling interval
+	 */
+	public void setSchedulingInterval(double schedulingInterval) {
+		this.schedulingInterval = schedulingInterval;
+	}
+
+	/**
+	 * Gets the scheduling interval.
+	 * 
+	 * @return the scheduling interval
+	 */
+	public double getSchedulingInterval() {
+		return schedulingInterval;
+	}
+}