add a check if the list of vms to migrate is empty to set the flag isMigrationActive to true

Author: ldbenitez

src/main/java/org/framework/algorithm/cleverReconfiguration/CleverReconfiguration.java

@@ -229,7 +229,7 @@ public static void cleverReconfigurationgManager(List<Scenario> workload, List<P
                                 vmsMigrationEndTimes = Utils.getTimeEndMigrationByVM(vmsToMigrate, actualTimeUnit);
                                 //update migration end
                                 migrationTimeEnd = Utils.getMigrationEndTime(vmsMigrationEndTimes);
-                                isMigrationActive = true;
+                                isMigrationActive = !vmsToMigrate.isEmpty();
 
                                 physicalMachines = new ArrayList<>(reconfgPlacementMerged.getPhysicalMachines());
                                 virtualMachines = new ArrayList<>(reconfgPlacementMerged.getVirtualMachineList());

src/main/java/org/framework/algorithm/periodicMigration/PeriodicMigration.java

@@ -202,7 +202,7 @@ public static void periodicMigrationManager(List<Scenario> workload, List<Physic
                                 vmsMigrationEndTimes = Utils.getTimeEndMigrationByVM(vmsToMigrate, actualTimeUnit);
                                 //update migration end
                                 migrationTimeEnd = Utils.getMigrationEndTime(vmsMigrationEndTimes);
-                                isMigrationActive = true;
+                                isMigrationActive = !vmsToMigrate.isEmpty();
 
                                 physicalMachines = new ArrayList<>(reconfgPlacementMerged.getPhysicalMachines());
                                 virtualMachines = new ArrayList<>(reconfgPlacementMerged.getVirtualMachineList());

src/main/java/org/framework/algorithm/stateOfArt/StateOfArt.java

@@ -210,7 +210,7 @@ public static void stateOfArtManager(List<Scenario> workload, List<PhysicalMachi
                                 vmsMigrationEndTimes = Utils.getTimeEndMigrationByVM(vmsToMigrate, actualTimeUnit);
                                 //update migration end
                                 migrationTimeEnd = Utils.getMigrationEndTime(vmsMigrationEndTimes);
-                                isMigrationActive = true;
+                                isMigrationActive = !vmsToMigrate.isEmpty();
 
                                 physicalMachines = new ArrayList<>(reconfgPlacementMerged.getPhysicalMachines());
                                 virtualMachines = new ArrayList<>(reconfgPlacementMerged.getVirtualMachineList());