def destroy_VM(self, vmid):
	virtualization_platform = VIRT_ENV
	virtualization_platorm_URI = virtualization_platform+":///session"
        conn = virt.virConnectOpen(virtualization_platorm_URI)
	dom = virt.virDomainLookupByName(conn,self.name)
	ret_val = '{\n"status":0\n}\n'
	if dom:
	    ret_val = '{\n"status":1\n}\n'
	    HYPERVISORS_LIST.pop(str(vmid['vmid'][0]))
	    virt.virDomainDestroy(dom)
	return ret_val
    def start_VM(self, xml_def,vmid):
        global VIRT_ENV
        #establish a connection to qemu/Kvm/Xen
	ret_val = "0"
	virtualization_platform = VIRT_ENV
	virtualization_platorm_URI = virtualization_platform+":///session"
        conn = virt.virConnectOpen(virtualization_platorm_URI)
	dom = virt.virDomainCreateXML(conn,xml_def,0)
	self.doms[vmid] = dom
	if dom:
	    ret_val="1"
	return ret_val
    def get_XML_def(self, parameters):
        """ This function will return the Hypervisor XML to be used in domain creation based on the parameters that it recieves"""
        global QEMU_PATH,VIRT_ENV
	 
	all_types_of_vm = self.get_all_vm_types()


	new_vm_type = parameters['vm_type'][0]
	new_vm_name = parameters['name'][0]
	new_vm_vmid = parameters['vmid'][0]
	self.name = new_vm_name
	self.type = new_vm_type
	self.vmid = new_vm_vmid
	
	vm_types = json.loads(all_types_of_vm)[u'types']
        for vm_type in vm_types:
	    print vm_type
	    if vm_type[u'tid'] == int(new_vm_type):
	        new_vm_ram = str(int(vm_type[u'ram'])*1000)
	        new_vm_disk =  vm_type[u'disk']
	        new_vm_cpu  =  vm_type[u'cpu']
	
	print "ram", self.ram_left
        self.ram_left -= int(new_vm_ram)
	print "ram", new_vm_ram
	print "ram", self.ram_left
	self.ram_usage = int(new_vm_ram)
	self.hd_usage = int(new_vm_disk)
	new_vm_image_path = IMAGE_DIR+parameters['image_name'][0]
	virtualization_platform = VIRT_ENV
	virtualization_platorm_URI = "qemu:///session"
        conn = virt.virConnectOpen(virtualization_platorm_URI)

	xml_def = virt.virConnectGetCapabilities(conn)
        environment = re.findall("<domain type='(.*)'",xml_def)[0]
        os_type = re.findall("<os_type>(.*)</os_type>",xml_def)[0]
        emulator = re.findall("<emulator>(.*)</emulator>",xml_def)[0]

        VIRT_ENV = environment
	QEMU_PATH = emulator


	######UPDATE HD HERE##############
	xml_def = """
	<domain type='%s'><name>%s</name><memory>%s</memory><vcpu>%s</vcpu><os><type arch='x86_64' machine='pc'>hvm</type>	<boot dev='hd'/></os><features>	<acpi/><apic/><pae/></features><on_poweroff>destroy</on_poweroff><on_reboot>restart</on_reboot><on_crash>restart</on_crash><devices><emulator>%s</emulator><disk type='file' device='disk'><driver name='%s' type='raw'/><source file='%s'/><target dev='hda' bus='ide'/><address type='drive' controller='0' bus='0' unit='0'/></disk></devices></domain>
        """%(environment,str(new_vm_name),str(new_vm_ram), str(new_vm_cpu),emulator,environment,str(new_vm_image_path))
	return xml_def