initial commit of EdgeCloudSim

EdgeCloudSim with default network model, mobility model, load generator model, edge orchestrator, and VM CPU utilization model
2017-02-18 13:22:32 +03:00
commit 19c4b9de40
35 changed files with 4098 additions and 0 deletions
--- a/src/edu/boun/edgecloudsim/utils/SimUtils.java
+++ b/src/edu/boun/edgecloudsim/utils/SimUtils.java
@@ -0,0 +1,103 @@
+/*
+ * Title:        EdgeCloudSim - Simulation Utils
+ * 
+ * Description:  Utility class providing helper functions
+ * 
+ * Licence:      GPL - http://www.gnu.org/copyleft/gpl.html
+ * Copyright (c) 2017, Bogazici University, Istanbul, Turkey
+ */
+
+package edu.boun.edgecloudsim.utils;
+
+import java.io.File;
+import java.util.Date;
+import java.util.Random;
+import java.util.concurrent.TimeUnit;
+
+import edu.boun.edgecloudsim.core.SimSettings;
+
+public class SimUtils {
+
+    public static final Random RNG = new Random(System.currentTimeMillis());
+    
+    public static int getRandomNumber(int start, int end) {
+    	//return pd.sample();
+		long range = (long)end - (long)start + 1;
+		long fraction = (long)(range * RNG.nextDouble());
+		return (int)(fraction + start); 
+    }
+    public static double getRandomDoubleNumber(double start, double end) {
+    	//return pd.sample();
+		double range = end - start;
+		double fraction = (range * RNG.nextDouble());
+		return (fraction + start); 
+    }
+    public static long getRandomLongNumber(int start, int end) {
+    	//return pd.sample();
+		long range = (long)end - (long)start + 1;
+		long fraction = (long)(range * RNG.nextDouble());
+		return (fraction + start); 
+    }
+
+	public static void cleanOutputFolder(String outputFolder){
+		//clean the folder where the result files will be saved
+		File dir = new File(outputFolder);
+		if(dir.exists() && dir.isDirectory())
+		{
+			for (File f: dir.listFiles())
+			{
+				if (f.exists() && f.isFile())
+				{
+					if(!f.delete())
+					{
+						SimLogger.printLine("file cannot be cleared: " + f.getAbsolutePath());
+						System.exit(0);
+					}
+				}
+			}
+		}
+		else {
+			SimLogger.printLine("Output folder is not available: " + outputFolder);
+			System.exit(0);
+		}
+	}
+	public static String getTimeDifference(Date startDate, Date endDate){
+		String result = "";
+		long duration  = endDate.getTime() - startDate.getTime();
+
+		long diffInMilli = TimeUnit.MILLISECONDS.toMillis(duration);
+		long diffInSeconds = TimeUnit.MILLISECONDS.toSeconds(duration);
+		long diffInMinutes = TimeUnit.MILLISECONDS.toMinutes(duration);
+		long diffInHours = TimeUnit.MILLISECONDS.toHours(duration);
+		long diffInDays = TimeUnit.MILLISECONDS.toDays(duration);
+		
+		if(diffInDays>0)
+			result += diffInDays + ((diffInDays>1 == true) ? " Days " : " Day ");
+		if(diffInHours>0)
+			result += diffInHours % 24 + ((diffInHours>1 == true) ? " Hours " : " Hour ");
+		if(diffInMinutes>0)
+			result += diffInMinutes % 60 + ((diffInMinutes>1 == true) ? " Minutes " : " Minute ");
+		if(diffInSeconds>0)
+			result += diffInSeconds % 60 + ((diffInSeconds>1 == true) ? " Seconds" : " Second");
+		if(diffInMilli>0 && result.isEmpty())
+			result += diffInMilli + ((diffInMilli>1 == true) ? " Milli Seconds" : " Milli Second");
+		
+		return result;
+	}
+	
+	public static SimSettings.PLACE_TYPES stringToPlace(String attractiveness){
+		SimSettings.PLACE_TYPES placeType = null;
+		if(attractiveness.equals("1"))
+			placeType = SimSettings.PLACE_TYPES.ATTRACTIVENESS_L1;
+		else if(attractiveness.equals("2"))
+			placeType = SimSettings.PLACE_TYPES.ATTRACTIVENESS_L2;
+		else if(attractiveness.equals("3"))
+			placeType = SimSettings.PLACE_TYPES.ATTRACTIVENESS_L3;
+		else{
+			SimLogger.printLine("Unknown attractiveness level! Terminating simulation...");
+	    	System.exit(0);
+		}
+		
+		return placeType;
+	}
+}