"""
Address device / device descriptor class
http://libvirt.org/formatdomain.html#elementsAddress
"""
from virttest.libvirt_xml import accessors, xcepts
from virttest.libvirt_xml.devices import base
[docs]class Address(base.TypedDeviceBase):
__slots__ = ('attrs',)
def __init__(self, type_name, virsh_instance=base.base.virsh):
# Blindly accept any/all attributes as simple dictionary
accessors.XMLElementDict('attrs', self, parent_xpath='/',
tag_name='address')
super(self.__class__, self).__init__(device_tag='address',
type_name=type_name,
virsh_instance=virsh_instance)
@classmethod
[docs] def new_from_dict(cls, attributes, virsh_instance=base.base.virsh):
# type_name is manditory, throw exception if doesn't exist
try:
# pop() so don't process again in loop below
instance = cls(type_name=attributes.pop('type_name'),
virsh_instance=virsh_instance)
except (KeyError, AttributeError):
raise xcepts.LibvirtXMLError("type_name is manditory for "
"Address class")
# Stick property values in as attributes
xtfroot = instance.xmltreefile.getroot()
for key, value in attributes.items():
xtfroot.set(key, value)
return instance
@classmethod
[docs] def new_from_element(cls, element, virsh_instance=base.base.virsh):
# element uses type attribute, class uses type_name
edict = dict(element.items())
try:
edict['type_name'] = edict.pop('type')
except (KeyError, AttributeError):
raise xcepts.LibvirtXMLError("type attribute is manditory for "
"Address class")
return cls.new_from_dict(edict, virsh_instance=virsh_instance)