def _check_drive_from_metadata_xml(self, data):
desc = metadata.Descriptor()
dom = FakeDomain.with_metadata(data.metadata_xml)
desc.load(dom)
attrs = common.get_drive_conf_identifying_attrs(data.conf)
with desc.device(**attrs) as dev:
self.assertEqual(dev, data.conf)
def _check_drive_to_metadata_xml(self, data):
desc = metadata.Descriptor()
attrs = common.get_drive_conf_identifying_attrs(data.conf)
with desc.device(**attrs) as dev:
dev.update(data.conf)
dom = FakeDomain()
desc.dump(dom)
self.assertXMLEqual(list(dom.xml.values())[0], data.metadata_xml)
def dev_elems_from_xml(vm, xml):
"""
Return device instance building elements from provided XML.
The XML must contain <devices> element with a single device subelement, the
one to create the instance for. Depending on the device kind <metadata>
element may be required to provide device metadata; the element may and
needn't contain unrelated metadata. This function is used in device
hot(un)plugs.
Example `xml` value (top element tag may be arbitrary):
<?xml version='1.0' encoding='UTF-8'?>
<hotplug>
<devices>
<interface type="bridge">
<mac address="66:55:44:33:22:11"/>
<model type="virtio" />
<source bridge="ovirtmgmt" />
<filterref filter="vdsm-no-mac-spoofing" />
<link state="up" />
<bandwidth />
</interface>
</devices>
<metadata xmlns:ns0="http://ovirt.org/vm/tune/1.0"
xmlns:ovirt-vm="http://ovirt.org/vm/1.0">
<ovirt-vm:vm xmlns:ovirt-vm="http://ovirt.org/vm/1.0">
<ovirt-vm:device mac_address='66:55:44:33:22:11'>
<ovirt-vm:network>test</ovirt-vm:network>
<ovirt-vm:portMirroring>
<ovirt-vm:network>network1</ovirt-vm:network>
<ovirt-vm:network>network2</ovirt-vm:network>
</ovirt-vm:portMirroring>
</ovirt-vm:device>
</ovirt-vm:vm>
</metadata>
</hotplug>
:param xml: XML specifying the device as described above.
:type xml: basestring
:returns: Triplet (device_class, device_element, device_meta) where
`device_class` is the class to be used to create the device instance;
`device_element` and `device_meta` are objects to be passed as arguments
to device_class `from_xml_tree` method.
"""
dom = xmlutils.fromstring(xml)
devices = vmxml.find_first(dom, 'devices')
dev_elem = next(vmxml.children(devices))
_dev_type, dev_class = identify_from_xml_elem(dev_elem)
meta = vmxml.find_first(dom, 'metadata', None)
if meta is None:
md_desc = metadata.Descriptor()
else:
md_desc = metadata.Descriptor.from_xml(xmlutils.tostring(meta))
dev_meta = _get_metadata_from_elem_xml(vm.id, md_desc, dev_class, dev_elem)
return dev_class, dev_elem, dev_meta
def test_deeply_nested_metadata_preserved(self):
conf = {
'device': 'cdrom',
'iface': 'ide',
'index': '3',
'path': '',
'readonly': 'true',
'specParams': {
'vmPayload': {
'file': {
'openstack/content/0000': 'something',
'openstack/latest/meta_data.json': 'something',
'openstack/latest/user_data': 'something',
},
'volId': 'config-2',
}
},
'type': 'disk',
}
expected_xml = """<?xml version='1.0' encoding='UTF-8'?>
<vm>
<device name="hdd" devtype="disk">
<device>cdrom</device>
<iface>ide</iface>
<index>3</index>
<path />
<readonly>true</readonly>
<type>disk</type>
<specParams>
<vmPayload>
<volId>config-2</volId>
<file path='openstack/content/0000'>something</file>
<file path='openstack/latest/meta_data.json'>something</file>
<file path='openstack/latest/user_data'>something</file>
</vmPayload>
</specParams>
</device>
</vm>"""
desc = metadata.Descriptor()
with desc.device(devtype=conf['type'],
name=drivename.make(conf['iface'],
conf['index'])) as dev:
dev.update(conf)
dom = FakeDomain()
desc.dump(dom)
# the first dump() used to -wrongly- modify the supplied data
desc.dump(dom)
for produced_xml in dom.xml.values():
self.assertXMLEqual(produced_xml, expected_xml)
def setUp(self):
# empty descriptor
self.md_desc = metadata.Descriptor()
self.log = logging.getLogger('test')
def setUp(self):
# empty descriptor
self.md_desc = metadata.Descriptor()
