On-demand change the memory size of the virtual machine

/*

Purpose:

This workflow is used on-demand change the memory size of the virtual machine.

Parameters:

– memorySize (string)

– vm (VC:VirtualMachine)

*/

try

{

              if(vm != null){

                             var currentMemory = vm.summary.config.memorySizeMB;

                             System.log("Current Memory - "+currentMemory);

                             // Getting the Memory that is being increased/decreased to the VM

                             var memoryToBeIncreased = (Number(memorySize)*1024) - (currentMemory);

                             if(memoryToBeIncreased < 0 && vm.runtime.powerState.value == "poweredOn"){

                                           var task = System.getModule("com.vmware.library.vc.vm.power").forcePowerOff(vm) ;

                                           var actionResult = System.getModule("com.vmware.library.vc.basic").vim3WaitTaskEnd(task,"No",2) ;

                             }

                             var configSpec = new VcVirtualMachineConfigSpec();

                             configSpec.memoryMB = (Number(memorySize)*1024);

                             var task = vm.reconfigVM_Task( configSpec );

                             var actionResult = System.getModule("com.vmware.library.vc.basic").vim3WaitTaskEnd(task) ;

              }

              else{

                                           var msg = "virtual machine not found.";

                                           throw msg;

              }

}

catch(error){

              System.log(error);

              throw error;

}