193-logs-in-cloudsim: Add few logs.

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

@@ -13,6 +13,10 @@
 
 import org.cloudbus.cloudsim.core.CloudSim;
 
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 /**
  * CloudletSchedulerSpaceShared implements a policy of scheduling performed by a virtual machine
  * to run its {@link Cloudlet Cloudlets}.
@@ -25,6 +29,9 @@
  * @author Anton Beloglazov
  * @since CloudSim Toolkit 1.0
  */
+
+private static final Logger logger = Logger.getLogger(CloudletSchedulerSpaceShared.class.getName());
+
 public class CloudletSchedulerSpaceShared extends CloudletScheduler {
 	/** The number of PEs currently available for the VM using the scheduler,
          * according to the mips share provided to it by
@@ -299,6 +306,11 @@ public double cloudletResume(int cloudletId) {
 	@Override
 	public double cloudletSubmit(Cloudlet cloudlet, double fileTransferTime) {
 		// it can go to the exec list
+		ConsoleHandler consoleHandler = new ConsoleHandler();
+        consoleHandler.setLevel(Level.INFO);
+        logger.setLevel(Level.INFO);
+        logger.addHandler(consoleHandler);
+
 		if ((currentCpus - usedPes) >= cloudlet.getNumberOfPes()) {
 			ResCloudlet rcl = new ResCloudlet(cloudlet);
 			rcl.setCloudletStatus(Cloudlet.INEXEC);
@@ -307,11 +319,13 @@ public double cloudletSubmit(Cloudlet cloudlet, double fileTransferTime) {
 			}
 			getCloudletExecList().add(rcl);
 			usedPes += cloudlet.getNumberOfPes();
+			logger.info("Cloud #" + cl.getCloudletId() + " queued. Time for loading files: " + fileTransferTime);
 		} else {// no enough free PEs: go to the waiting queue
 			ResCloudlet rcl = new ResCloudlet(cloudlet);
 			rcl.setCloudletStatus(Cloudlet.QUEUED);
 			getCloudletWaitingList().add(rcl);
 			return 0.0;
+			logger.info("Cloud #" + cl.getCloudletId() + " no enough free PEs: go to the waiting queue ");
 		}
 
 		// calculate the expected time for cloudlet completion

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

@@ -21,6 +21,10 @@
 import org.cloudbus.cloudsim.lists.CloudletList;
 import org.cloudbus.cloudsim.lists.VmList;
 
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 /**
  * DatacentreBroker represents a broker acting on behalf of a user. It hides VM management, as vm
  * creation, submission of cloudlets to VMs and destruction of VMs.
@@ -30,6 +34,7 @@
  * @since CloudSim Toolkit 1.0
  */
 public class DatacenterBroker extends SimEntity {
+	private static final Logger logger = Logger.getLogger(DatacenterBroker.class.getName());
 
 	/** The list of VMs submitted to be managed by the broker. */
 	protected List<? extends Vm> vmList;

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

@@ -60,7 +60,37 @@ public static void print(Object message) {
 			print(String.valueOf(message));
 		}
 	}
-
+	public static void log(String message) {
+        logger.log(logLevel, message);
+    }
+
+    /**
+     * Logs CPU usage information.
+     *
+     * @param cpuUsage The CPU usage to be logged.
+     */
+    public static void logCpuUsage(double cpuUsage) {
+        log("CPU Usage: " + cpuUsage);
+    }
+
+    /**
+     * Logs memory usage information.
+     *
+     * @param memoryUsage The memory usage to be logged.
+     */
+    public static void logMemoryUsage(double memoryUsage) {
+        log("Memory Usage: " + memoryUsage);
+    }
+
+    /**
+     * Logs electricity usage information.
+     *
+     * @param electricityUsage The electricity usage to be logged.
+     */
+    public static void logElectricityUsage(double electricityUsage) {
+        log("Electricity Usage: " + electricityUsage);
+    }
+
 	/**
 	 * Prints a message and a new line.
 	 * 

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

@@ -15,6 +15,10 @@
 
 import org.cloudbus.cloudsim.core.CloudSim;
 
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
 /**
  * VmAllocationPolicySimple is an VmAllocationPolicy that chooses, as the host for a VM, the host
  * with less PEs in use. It is therefore a Worst Fit policy, allocating VMs into the 
@@ -25,6 +29,8 @@
  * @since CloudSim Toolkit 1.0
  */
 public class VmAllocationPolicySimple extends VmAllocationPolicy {
+	private static final Logger logger = Logger.getLogger(YourSimulationClass.class.getName());
+
 
 	/** The map between each VM and its allocated host.
          * The map key is a VM UID and the value is the allocated host for that VM. */
@@ -102,21 +108,27 @@ public boolean allocateHostForVm(Vm vm) {
 				}
 				tries++;
 			} while (!result && tries < getFreePes().size());
-
+			logger.info("VM #" + vm.getId() + " queied for work");
 		}
 
 		return result;
 	}
 
 	@Override
 	public void deallocateHostForVm(Vm vm) {
+		ConsoleHandler consoleHandler = new ConsoleHandler();
+        consoleHandler.setLevel(Level.INFO);
+        logger.setLevel(Level.INFO);
+        logger.addHandler(consoleHandler);
+
 		Host host = getVmTable().remove(vm.getUid());
 		int idx = getHostList().indexOf(host);
 		int pes = getUsedPes().remove(vm.getUid());
 		if (host != null) {
 			host.vmDestroy(vm);
 			getFreePes().set(idx, getFreePes().get(idx) + pes);
 		}
+		logger.info("VM #" + vm.getId() + " destroyed");
 	}
 
 	@Override

modules/cloudsim/src/main/java/org/cloudbus/cloudsim/container/schedulers/ContainerCloudletSchedulerDynamicWorkload.java

@@ -13,8 +13,12 @@
 import java.util.HashMap;
 import java.util.ArrayList;
 
-public class ContainerCloudletSchedulerDynamicWorkload extends ContainerCloudletSchedulerTimeShared {
+import java.util.logging.ConsoleHandler;
+import java.util.logging.Level;
+import java.util.logging.Logger;
 
+public class ContainerCloudletSchedulerDynamicWorkload extends ContainerCloudletSchedulerTimeShared {
+        private static final Logger logger = Logger.getLogger(YourSimulationClass.class.getName());
         /** The mips. */
         private double mips;
 
@@ -123,6 +127,11 @@ public double cloudletSubmit(Cloudlet cl) {
          */
         @Override
         public double cloudletSubmit(Cloudlet cl, double fileTransferTime) {
+            ConsoleHandler consoleHandler = new ConsoleHandler();
+            consoleHandler.setLevel(Level.INFO);
+            logger.setLevel(Level.INFO);
+            logger.addHandler(consoleHandler);
+
             ResCloudlet rcl = new ResCloudlet(cl);
             rcl.setCloudletStatus(Cloudlet.INEXEC);
 
@@ -132,6 +141,8 @@ public double cloudletSubmit(Cloudlet cl, double fileTransferTime) {
 
             getCloudletExecList().add(rcl);
             return getEstimatedFinishTime(rcl, getPreviousTime());
+
+            logger.info("Cloud #" + cl.getCloudletId() + " queued. Time loading files: " + fileTransferTime);
         }
 
         /**