modification on reading settings from config file

1- simulation scenarios are defined in config file instead of static
enumarations
2- defining multiple edge orchestrator policy in config file support is
added

config/default_config.properties

@@ -17,7 +17,11 @@ gsm_bandwidth=10
 
 mips_for_cloud=20000
 
-task_provisioning=NEXT_FIT
+#use ',' for multiple values
+orchestrator_policies=NEXT_FIT
+
+#use ',' for multiple values
+simulation_scenarios=SINGLE_TIER,TWO_TIER,TWO_TIER_WITH_EO
 
 attractiveness_L1_mean_waiting_time=60
 attractiveness_L2_mean_waiting_time=30

src/edu/boun/edgecloudsim/core/SimManager.java

@@ -47,7 +47,7 @@ public class SimManager extends SimEntity {
 	
 	private static SimManager instance = null;
 	
-	public SimManager(ScenarioFactory _scenarioFactory, int _numOfMobileDevice, SimSettings.SCENARIO_TYPES _simScenario) throws Exception {
+	public SimManager(ScenarioFactory _scenarioFactory, int _numOfMobileDevice, String _simScenario) throws Exception {
 		super("SimManager");
 		scenarioFactory = _scenarioFactory;
 		numOfMobileDevice = _numOfMobileDevice;

src/edu/boun/edgecloudsim/core/SimSettings.java

@@ -33,13 +33,12 @@ public class SimSettings {
 	private static SimSettings instance = null;
 	private Document edgeDevicesDoc = null;
 	
-	//enumarations for the scenarion, VM, appplication, and place.
+	//enumarations for the VM, appplication, and place.
 	//if you want to add different types on your config file,
 	//you may modify current types or add new types here. 
 	public static enum VM_TYPES { EDGE_VM, CLOUD_VM }
 	public static enum APP_TYPES { FACE_REC_APP, HEALTH_APP, HEAVY_COMP_APP, VIDEO_GAME_APP, SIMPLE_SERVICE_APP }
 	public static enum PLACE_TYPES { ATTRACTIVENESS_L1, ATTRACTIVENESS_L2, ATTRACTIVENESS_L3 }
-	public static enum SCENARIO_TYPES { SINGLE_TIER, TWO_TIER, TWO_TIER_WITH_EO }
 	
 	//predifined ID for cloud components.
 	public static int CLOUD_DATACENTER_ID = 1000;
@@ -71,7 +70,8 @@ public class SimSettings {
 
     private int MIPS_FOR_CLOUD; //MIPS
     
-    private String ORCHESTRATOR_POLICY;
+    private String[] SIMULATION_SCENARIOS;
+    private String[] ORCHESTRATOR_POLICIES;
     
     // mean waiting time (minute) is stored for each place types
     private double[] mobilityLookUpTable;
@@ -135,7 +135,9 @@ public class SimSettings {
 			//-Each task is executed with maximum capacity (as if there is no task in the cloud) 
 			MIPS_FOR_CLOUD = Integer.parseInt(prop.getProperty("mips_for_cloud"));
 
-			ORCHESTRATOR_POLICY = prop.getProperty("task_provisioning");
+			ORCHESTRATOR_POLICIES = prop.getProperty("orchestrator_policies").split(",");
+			
+			SIMULATION_SCENARIOS = prop.getProperty("simulation_scenarios").split(",");
 			
 			//avg waiting time in a place (min)
 			double place1_mean_waiting_time = Double.parseDouble(prop.getProperty("attractiveness_L1_mean_waiting_time"));
@@ -314,11 +316,19 @@ public class SimSettings {
 	}
 
 	/**
-	 * returns orchestrator policy as string
+	 * returns simulation screnarios as string
 	 */
-	public String getOrchestratorPolicy()
+	public String[] getSimulationScenarios()
 	{
-		return ORCHESTRATOR_POLICY;
+		return SIMULATION_SCENARIOS;
+	}
+
+	/**
+	 * returns orchestrator policies as string
+	 */
+	public String[] getOrchestratorPolicies()
+	{
+		return ORCHESTRATOR_POLICIES;
 	}
 	
 	/**

src/edu/boun/edgecloudsim/edge_orchestrator/BasicEdgeOrchestrator.java

@@ -18,7 +18,6 @@ import org.cloudbus.cloudsim.core.CloudSim;
 
 import edu.boun.edgecloudsim.core.SimManager;
 import edu.boun.edgecloudsim.core.SimSettings;
-import edu.boun.edgecloudsim.core.SimSettings.SCENARIO_TYPES;
 import edu.boun.edgecloudsim.edge_server.EdgeVM;
 import edu.boun.edgecloudsim.edge_client.CpuUtilizationModel_Custom;
 import edu.boun.edgecloudsim.edge_client.Task;
@@ -30,8 +29,7 @@ public class BasicEdgeOrchestrator extends EdgeOrchestrator {
 	private int lastSelectedHostIndex; //used by load balancer
 	private int[] lastSelectedVmIndexes; //used by each host individually
 	
-	public BasicEdgeOrchestrator(String _policy,
+	public BasicEdgeOrchestrator(String _policy, String _simScenario) {
-			SCENARIO_TYPES _simScenario) {
 		super(_policy, _simScenario);
 	}
 
@@ -47,7 +45,7 @@ public class BasicEdgeOrchestrator extends EdgeOrchestrator {
 
 	@Override
 	public EdgeVM selectVm(Task task) {
-		if(simScenario == SimSettings.SCENARIO_TYPES.TWO_TIER_WITH_EO)
+		if(simScenario.equals("TWO_TIER_WITH_EO"))
 			return selectVmOnLoadBalancer(task);
 		else
 			return selectVmOnHost(task);

src/edu/boun/edgecloudsim/edge_orchestrator/EdgeOrchestrator.java

@@ -13,15 +13,14 @@
 
 package edu.boun.edgecloudsim.edge_orchestrator;
 
-import edu.boun.edgecloudsim.core.SimSettings;
 import edu.boun.edgecloudsim.edge_server.EdgeVM;
 import edu.boun.edgecloudsim.edge_client.Task;
 
 public abstract class EdgeOrchestrator {
 	protected String policy;
-	protected SimSettings.SCENARIO_TYPES simScenario;
+	protected String simScenario;
 	
-	public EdgeOrchestrator(String _policy, SimSettings.SCENARIO_TYPES _simScenario){
+	public EdgeOrchestrator(String _policy, String _simScenario){
 		policy = _policy;
 		simScenario = _simScenario;
 	}

src/edu/boun/edgecloudsim/sample_application/SampleScenarioFactory.java

@@ -17,7 +17,6 @@ import org.cloudbus.cloudsim.UtilizationModel;
 import org.cloudbus.cloudsim.VmAllocationPolicy;
 
 import edu.boun.edgecloudsim.core.ScenarioFactory;
-import edu.boun.edgecloudsim.core.SimSettings;
 import edu.boun.edgecloudsim.core.SimSettings.APP_TYPES;
 import edu.boun.edgecloudsim.edge_orchestrator.BasicEdgeOrchestrator;
 import edu.boun.edgecloudsim.edge_orchestrator.EdgeOrchestrator;
@@ -34,12 +33,12 @@ public class SampleScenarioFactory implements ScenarioFactory {
 	private int numOfMobileDevice;
 	private double simulationTime;
 	private String orchestratorPolicy;
-	private SimSettings.SCENARIO_TYPES simScenario;
+	private String simScenario;
 	
 	SampleScenarioFactory(int _numOfMobileDevice,
 			double _simulationTime,
 			String _orchestratorPolicy,
-			SimSettings.SCENARIO_TYPES _simScenario){
+			String _simScenario){
 		orchestratorPolicy = _orchestratorPolicy;
 		numOfMobileDevice = _numOfMobileDevice;
 		simulationTime = _simulationTime;
@@ -75,5 +74,4 @@ public class SampleScenarioFactory implements ScenarioFactory {
 	public UtilizationModel getCpuUtilizationModel(APP_TYPES _taskType) {
 		return new CpuUtilizationModel_Custom(_taskType);
 	}
-
 }

src/edu/boun/edgecloudsim/sample_application/mainApp.java

@@ -75,44 +75,50 @@ public class mainApp {
 
 		for(int j=SS.getMinNumOfMobileDev(); j<=SS.getMaxNumOfMobileDev(); j+=SS.getMobileDevCounterSize())
 		{
-			for (SimSettings.SCENARIO_TYPES scenario : SimSettings.SCENARIO_TYPES.values())
+			for(int k=0; k<SS.getSimulationScenarios().length; k++)
 			{
-				Date ScenarioStartDate = Calendar.getInstance().getTime();
+				for(int i=0; i<SS.getOrchestratorPolicies().length; i++)
-				now = df.format(ScenarioStartDate);
-				
-				SimLogger.printLine("Scenario started at " + now);
-				SimLogger.printLine(scenario + "(" + SS.getOrchestratorPolicy() + ")" + " - duration: " + SS.getSimulationTime()/3600 + " hour(s) - poisson: " + SS.getTaskLookUpTable()[0][2] + " - #devices: " + j + " - ite: " + iterationNumber);
-				SimLogger.getInstance().simStarted(outputFolder,"SIMRESULT_" + scenario + "_" + j + "DEVICES");
-				
-				try
 				{
-					// First step: Initialize the CloudSim package. It should be called
+					String simScenario = SS.getSimulationScenarios()[k];
-					// before creating any entities.
+					String orchestratorPolicy = SS.getOrchestratorPolicies()[i];
-					int num_user = 2;   // number of grid users
+					Date ScenarioStartDate = Calendar.getInstance().getTime();
-					Calendar calendar = Calendar.getInstance();
+					now = df.format(ScenarioStartDate);
-					boolean trace_flag = false;  // mean trace events
 					
-					// Initialize the CloudSim library
+					SimLogger.printLine("Scenario started at " + now);
-					CloudSim.init(num_user, calendar, trace_flag, 0.01);
+					SimLogger.printLine("Scenario: " + simScenario + " - Policy: " + orchestratorPolicy + " - #iteration: " + iterationNumber);
+					SimLogger.printLine("Duration: " + SS.getSimulationTime()/3600 + " hour(s) - Poisson: " + SS.getTaskLookUpTable()[0][2] + " - #devices: " + j);
+					SimLogger.getInstance().simStarted(outputFolder,"SIMRESULT_" + simScenario + "_"  + orchestratorPolicy + "_" + j + "DEVICES");
 					
-					ScenarioFactory sampleFactory = new SampleScenarioFactory(j,SS.getSimulationTime(), SS.getOrchestratorPolicy(), scenario);
+					try
+					{
+						// First step: Initialize the CloudSim package. It should be called
+						// before creating any entities.
+						int num_user = 2;   // number of grid users
+						Calendar calendar = Calendar.getInstance();
+						boolean trace_flag = false;  // mean trace events
 				
-					SimManager manager = new SimManager(sampleFactory, j, scenario);
+						// Initialize the CloudSim library
-					manager.startSimulation();
+						CloudSim.init(num_user, calendar, trace_flag, 0.01);
-				}
-				catch (Exception e)
-				{
-					SimLogger.printLine("The simulation has been terminated due to an unexpected error");
-					e.printStackTrace();
-					System.exit(0);
-				}
 						
-				Date ScenarioEndDate = Calendar.getInstance().getTime();
+						ScenarioFactory sampleFactory = new SampleScenarioFactory(j,SS.getSimulationTime(), orchestratorPolicy, simScenario);
-				now = df.format(ScenarioEndDate);
+						
-				SimLogger.printLine("Scenario finished at " + now +  ". It took " + SimUtils.getTimeDifference(ScenarioStartDate,ScenarioEndDate));
+						SimManager manager = new SimManager(sampleFactory, j, simScenario);
-				SimLogger.printLine("----------------------------------------------------------------------");
+						manager.startSimulation();
-			}//End of SCENARIO_TYPES loop
+					}
-		}//End of NUMBER_OF_MOBILE_DEVICE loop
+					catch (Exception e)
+					{
+						SimLogger.printLine("The simulation has been terminated due to an unexpected error");
+						e.printStackTrace();
+						System.exit(0);
+					}
+					
+					Date ScenarioEndDate = Calendar.getInstance().getTime();
+					now = df.format(ScenarioEndDate);
+					SimLogger.printLine("Scenario finished at " + now +  ". It took " + SimUtils.getTimeDifference(ScenarioStartDate,ScenarioEndDate));
+					SimLogger.printLine("----------------------------------------------------------------------");
+				}//End of orchestrators loop
+			}//End of scenarios loop
+		}//End of mobile devices loop
 
 		Date SimulationEndDate = Calendar.getInstance().getTime();
 		now = df.format(SimulationEndDate);

src/edu/boun/edgecloudsim/task_generator/IdleActiveLoadGenerator.java

@@ -26,7 +26,7 @@ import edu.boun.edgecloudsim.utils.SimUtils;
 
 public class IdleActiveLoadGenerator extends LoadGeneratorModel{
 
-	public IdleActiveLoadGenerator(int _numberOfMobileDevices, double _simulationTime, SimSettings.SCENARIO_TYPES _simScenario) {
+	public IdleActiveLoadGenerator(int _numberOfMobileDevices, double _simulationTime, String _simScenario) {
 		super(_numberOfMobileDevices, _simulationTime, _simScenario);
 	}
 
@@ -88,7 +88,7 @@ public class IdleActiveLoadGenerator extends LoadGeneratorModel{
 				}
 
 				boolean requireCloud = false;
-				if(simScenario != SimSettings.SCENARIO_TYPES.SINGLE_TIER){
+				if(!simScenario.equals("SINGLE_TIER")){
 					//decide to use cloud or cloudlet VM
 					int CloudVmPicker = SimUtils.getRandomNumber(0, 100);
 					

src/edu/boun/edgecloudsim/task_generator/LoadGeneratorModel.java

@@ -15,16 +15,15 @@ package edu.boun.edgecloudsim.task_generator;
 
 import java.util.List;
 
-import edu.boun.edgecloudsim.core.SimSettings;
 import edu.boun.edgecloudsim.utils.EdgeTask;
 
 public abstract class LoadGeneratorModel {
 	protected List<EdgeTask> taskList;
 	protected int numberOfMobileDevices;
 	protected double simulationTime;
-	protected SimSettings.SCENARIO_TYPES simScenario;
+	protected String simScenario;
 	
-	public LoadGeneratorModel(int _numberOfMobileDevices, double _simulationTime, SimSettings.SCENARIO_TYPES _simScenario){
+	public LoadGeneratorModel(int _numberOfMobileDevices, double _simulationTime, String _simScenario){
 		numberOfMobileDevices=_numberOfMobileDevices;
 		simulationTime=_simulationTime;
 		simScenario=_simScenario;