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mockmodel.py
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mockmodel.py
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#
# Project Kimchi
#
# Copyright IBM Corp, 2015-2016
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
import libvirt
import lxml.etree as ET
import os
import time
from collections import defaultdict
from lxml import objectify
from lxml.builder import E
from wok.exception import NotFoundError, OperationFailed
from wok.objectstore import ObjectStore
from wok.utils import add_task, get_next_clone_name
from wok.xmlutils.utils import xml_item_update
from wok.plugins.kimchi import imageinfo
from wok.plugins.kimchi import osinfo
from wok.plugins.kimchi.model import cpuinfo
from wok.plugins.kimchi.model import vmifaces
from wok.plugins.kimchi.model.groups import PAMGroupsModel
from wok.plugins.kimchi.model.host import DeviceModel
from wok.plugins.kimchi.model.host import DevicesModel
from wok.plugins.kimchi.model.libvirtstoragepool import IscsiPoolDef
from wok.plugins.kimchi.model.libvirtstoragepool import NetfsPoolDef
from wok.plugins.kimchi.model.libvirtstoragepool import StoragePoolDef
from wok.plugins.kimchi.model.model import Model
from wok.plugins.kimchi.model.storagepools import StoragePoolModel
from wok.plugins.kimchi.model.storagepools import StoragePoolsModel
from wok.plugins.kimchi.model.storagevolumes import StorageVolumeModel
from wok.plugins.kimchi.model.storagevolumes import StorageVolumesModel
from wok.plugins.kimchi.model import storagevolumes
from wok.plugins.kimchi.model.templates import LibvirtVMTemplate
from wok.plugins.kimchi.model.users import PAMUsersModel
from wok.plugins.kimchi.model.vmhostdevs import VMHostDevsModel
from wok.plugins.kimchi.utils import pool_name_from_uri
from wok.plugins.kimchi.vmtemplate import VMTemplate
fake_user = {'root': 'letmein!'}
mockmodel_defaults = {
'domain': 'test', 'arch': 'i686'
}
storagevolumes.VALID_RAW_CONTENT = ['dos/mbr boot sector',
'x86 boot sector',
'data', 'empty']
DEFAULT_POOL = '/plugins/kimchi/storagepools/default-pool'
class MockModel(Model):
_mock_vms = defaultdict(list)
_mock_snapshots = {}
_XMLDesc = libvirt.virDomain.XMLDesc
_undefineDomain = libvirt.virDomain.undefine
_libvirt_get_vol_path = LibvirtVMTemplate._get_volume_path
def __init__(self, objstore_loc=None):
# Override osinfo.defaults to ajust the values according to
# test:///default driver
defaults = dict(osinfo.defaults)
defaults.update(mockmodel_defaults)
defaults['disks'][0]['pool'] = {'name': DEFAULT_POOL}
osinfo.defaults = dict(defaults)
self._mock_vgs = MockVolumeGroups()
self._mock_partitions = MockPartitions()
self._mock_devices = MockDevices()
self._mock_storagevolumes = MockStorageVolumes()
cpuinfo.get_topo_capabilities = MockModel.get_topo_capabilities
vmifaces.getDHCPLeases = MockModel.getDHCPLeases
libvirt.virDomain.XMLDesc = MockModel.domainXMLDesc
libvirt.virDomain.undefine = MockModel.undefineDomain
libvirt.virDomain.attachDeviceFlags = MockModel.attachDeviceFlags
libvirt.virDomain.detachDeviceFlags = MockModel.detachDeviceFlags
libvirt.virDomain.updateDeviceFlags = MockModel.updateDeviceFlags
libvirt.virStorageVol.resize = MockModel.volResize
libvirt.virStorageVol.wipePattern = MockModel.volWipePattern
IscsiPoolDef.prepare = NetfsPoolDef.prepare = StoragePoolDef.prepare
PAMUsersModel.auth_type = 'fake'
PAMGroupsModel.auth_type = 'fake'
super(MockModel, self).__init__('test:///default', objstore_loc)
self.objstore_loc = objstore_loc
self.objstore = ObjectStore(objstore_loc)
# The MockModel methods are instantiated on runtime according to Model
# and BaseModel
# Because that a normal method override will not work here
# Instead of that we also need to do the override on runtime
for method in dir(self):
if method.startswith('_mock_'):
mock_method = getattr(self, method)
if not callable(mock_method):
continue
m = method[6:]
model_method = getattr(self, m)
setattr(self, '_model_' + m, model_method)
setattr(self, m, mock_method)
DeviceModel.lookup = self._mock_device_lookup
DeviceModel.get_iommu_groups = self._mock_device_get_iommu_groups
DeviceModel.is_device_3D_controller = \
self._mock_device_is_device_3D_controller
DevicesModel.get_list = self._mock_devices_get_list
StoragePoolsModel._check_lvm = self._check_lvm
StoragePoolModel._update_lvm_disks = self._update_lvm_disks
StorageVolumesModel.get_list = self._mock_storagevolumes_get_list
StorageVolumeModel.doUpload = self._mock_storagevolume_doUpload
LibvirtVMTemplate._get_volume_path = self._get_volume_path
VMTemplate.get_iso_info = self._probe_image
imageinfo.probe_image = self._probe_image
VMHostDevsModel._get_pci_device_xml = self._get_pci_device_xml
VMHostDevsModel._validate_pci_passthrough_env = self._validate_pci
def reset(self):
MockModel._mock_vms = defaultdict(list)
MockModel._mock_snapshots = {}
if hasattr(self, 'objstore'):
self.objstore = ObjectStore(self.objstore_loc)
params = {'vms': [u'test'], 'templates': [],
'networks': [u'default'], 'storagepools': [u'default-pool']}
for res, items in params.iteritems():
resources = getattr(self, '%s_get_list' % res)()
for i in resources:
if i in items:
continue
try:
getattr(self, '%s_deactivate' % res[:-1])(i)
except:
pass
getattr(self, '%s_delete' % res[:-1])(i)
volumes = self.storagevolumes_get_list('default-pool')
for v in volumes:
self.storagevolume_delete('default-pool', v)
@staticmethod
def get_topo_capabilities(conn):
# The libvirt test driver doesn't return topology.
xml = "<topology sockets='1' cores='2' threads='2'/>"
return ET.fromstring(xml)
@staticmethod
def domainXMLDesc(dom, flags=0):
xml = MockModel._XMLDesc(dom, flags)
root = objectify.fromstring(xml)
for dev_xml in MockModel._mock_vms.get(dom.name(), []):
dev = objectify.fromstring(dev_xml)
root.devices.append(dev)
return ET.tostring(root, encoding="utf-8")
@staticmethod
def undefineDomain(dom):
name = dom.name()
if name in MockModel._mock_vms.keys():
del MockModel._mock_vms[dom.name()]
return MockModel._undefineDomain(dom)
@staticmethod
def attachDeviceFlags(dom, xml, flags=0):
MockModel._mock_vms[dom.name()].append(xml)
@staticmethod
def _get_device_node(dom, xml):
xpath_map = {'disk': 'target',
'interface': 'mac',
'graphics': 'listen'}
dev = objectify.fromstring(xml)
dev_id = dev.find(xpath_map[dev.tag]).items()
dev_filter = ''
for key, value in dev_id:
dev_filter += "[@%s='%s']" % (key, value)
old_xml = dom.XMLDesc(libvirt.VIR_DOMAIN_XML_SECURE)
root = objectify.fromstring(old_xml)
devices = root.devices
dev = devices.find("./%s/%s%s/.." % (dev.tag, xpath_map[dev.tag],
dev_filter))
return (root, dev)
@staticmethod
def detachDeviceFlags(dom, xml, flags=0):
node = ET.fromstring(xml)
xml = ET.tostring(node, encoding="utf-8", pretty_print=True)
if xml in MockModel._mock_vms[dom.name()]:
MockModel._mock_vms[dom.name()].remove(xml)
@staticmethod
def updateDeviceFlags(dom, xml, flags=0):
_, old_dev = MockModel._get_device_node(dom, xml)
old_xml = ET.tostring(old_dev, encoding="utf-8", pretty_print=True)
if old_xml in MockModel._mock_vms[dom.name()]:
MockModel._mock_vms[dom.name()].remove(old_xml)
MockModel._mock_vms[dom.name()].append(xml)
@staticmethod
def volResize(vol, size, flags=0):
new_xml = xml_item_update(vol.XMLDesc(0), './capacity', str(size))
vol.delete(0)
pool = vol.storagePoolLookupByVolume()
pool.createXML(new_xml)
@staticmethod
def volWipePattern(vol, algorithm, flags=0):
new_xml = xml_item_update(vol.XMLDesc(0), './allocation', '0')
vol.delete(0)
pool = vol.storagePoolLookupByVolume()
pool.createXML(new_xml)
@staticmethod
def getDHCPLeases(net, mac):
return [{'iface': 'virbr1', 'ipaddr': '192.168.0.167',
'hostname': 'kimchi', 'expirytime': 1433285036L,
'prefix': 24, 'clientid': '01:%s' % mac,
'mac': mac, 'iaid': None, 'type': 0}]
def _probe_image(self, path):
return ('unknown', 'unknown')
def _get_volume_path(self, pool_uri, vol):
pool = pool_name_from_uri(pool_uri)
pool_info = self.storagepool_lookup(pool)
if pool_info['type'] == 'scsi':
return self._mock_storagevolumes.scsi_volumes[vol]['path']
return MockModel._libvirt_get_vol_path(pool, vol)
def _check_lvm(self, name, from_vg):
# do not do any verification while using MockModel
pass
def _update_lvm_disks(self, pool_name, disks):
conn = self.conn.get()
pool = conn.storagePoolLookupByName(pool_name.encode('utf-8'))
xml = pool.XMLDesc(0)
root = ET.fromstring(xml)
source = root.xpath('./source')[0]
for d in disks:
dev = E.device(path=d)
source.append(dev)
conn.storagePoolDefineXML(ET.tostring(root), 0)
def _mock_storagevolumes_create(self, pool, params):
vol_source = ['url', 'capacity']
index_list = list(i for i in range(len(vol_source))
if vol_source[i] in params)
create_param = vol_source[index_list[0]]
name = params.get('name')
if name is None and create_param == 'url':
params['name'] = os.path.basename(params['url'])
del params['url']
params['capacity'] = 1024
return self._model_storagevolumes_create(pool, params)
def _mock_storagevolumes_get_list(self, pool):
pool_info = self.storagepool_lookup(pool)
if pool_info['type'] == 'scsi':
return self._mock_storagevolumes.scsi_volumes.keys()
return self._model_storagevolumes_get_list(pool)
def _mock_storagevolume_lookup(self, pool, vol):
pool_info = self.storagepool_lookup(pool)
if pool_info['type'] == 'scsi':
return self._mock_storagevolumes.scsi_volumes[vol]
return self._model_storagevolume_lookup(pool, vol)
def _mock_storagevolume_doUpload(self, cb, vol, offset, data, data_size):
vol_path = vol.path()
# MockModel does not create the storage volume as a file
# So create it to do the file upload
if offset == 0:
dirname = os.path.dirname(vol_path)
if not os.path.exists(dirname):
os.makedirs(dirname)
open(vol_path, 'w').close()
try:
with open(vol_path, 'a') as fd:
fd.seek(offset)
fd.write(data)
except Exception, e:
os.remove(vol_path)
cb('', False)
raise OperationFailed("KCHVOL0029E", {"err": e.message})
def _mock_devices_get_list(self, _cap=None, _passthrough=None,
_passthrough_affected_by=None,
_available_only=None):
if _cap is None:
return self._mock_devices.devices.keys()
if _cap == 'fc_host':
_cap = 'scsi_host'
return [dev['name'] for dev in self._mock_devices.devices.values()
if dev['device_type'] == _cap]
def _mock_device_get_iommu_groups(self):
return [dev['iommuGroup'] for dev in
self._mock_devices.devices.values()
if 'iommuGroup' in dev]
def _mock_device_is_device_3D_controller(self, info):
if 'driver' in info and 'name' in info['driver']:
return info['driver']['name'] == 'nvidia'
return False
def _mock_device_lookup(self, dev_name):
return self._mock_devices.devices[dev_name]
def _mock_partitions_get_list(self):
return self._mock_partitions.partitions.keys()
def _mock_partition_lookup(self, name):
return self._mock_partitions.partitions[name]
def _mock_volumegroups_get_list(self):
return self._mock_vgs.data.keys()
def _mock_volumegroup_lookup(self, name):
return self._mock_vgs.data[name]
def _mock_vm_clone(self, name):
new_name = get_next_clone_name(self.vms_get_list(), name)
snapshots = MockModel._mock_snapshots.get(name, [])
MockModel._mock_snapshots[new_name] = snapshots
return self._model_vm_clone(name)
def _mock_vmsnapshots_create(self, vm_name, params):
name = params.get('name', unicode(int(time.time())))
params = {'vm_name': vm_name, 'name': name}
taskid = add_task(u'/plugins/kimchi/vms/%s/snapshots/%s' %
(vm_name, name), self._vmsnapshots_create_task,
self.objstore, params)
return self.task_lookup(taskid)
def _vmsnapshots_create_task(self, cb, params):
vm_name = params['vm_name']
name = params['name']
parent = u''
snapshots = MockModel._mock_snapshots.get(vm_name, [])
for sn in snapshots:
if sn.current:
sn.current = False
parent = sn.name
snapshots.append(MockVMSnapshot(name, {'parent': parent}))
MockModel._mock_snapshots[vm_name] = snapshots
cb('OK', True)
def _mock_vmsnapshots_get_list(self, vm_name):
snapshots = MockModel._mock_snapshots.get(vm_name, [])
return sorted([snap.name for snap in snapshots])
def _mock_currentvmsnapshot_lookup(self, vm_name):
for sn in MockModel._mock_snapshots.get(vm_name, []):
if sn.current:
return sn.info
def _mock_vmsnapshot_lookup(self, vm_name, name):
for sn in MockModel._mock_snapshots.get(vm_name, []):
if sn.name == name:
return sn.info
raise NotFoundError('KCHSNAP0003E', {'name': name, 'vm': vm_name})
def _mock_vmsnapshot_delete(self, vm_name, name):
snapshots = MockModel._mock_snapshots.get(vm_name, [])
for sn in snapshots:
if sn.name == name:
del snapshots[snapshots.index(sn)]
MockModel._mock_snapshots[vm_name] = snapshots
def _mock_vmsnapshot_revert(self, vm_name, name):
snapshots = MockModel._mock_snapshots.get(vm_name, [])
for sn in snapshots:
if sn.current:
sn.current = False
for sn in snapshots:
if sn.name == name:
sn.current = True
def _attach_device(self, vm_name, xmlstr):
MockModel._mock_vms[vm_name].append(xmlstr)
def _validate_pci(self):
pass
def _get_pci_device_xml(self, dev_info, slot, is_multifunction):
if 'detach_driver' not in dev_info:
dev_info['detach_driver'] = 'kvm'
source = E.source(E.address(domain=str(dev_info['domain']),
bus=str(dev_info['bus']),
slot=str(dev_info['slot']),
function=str(dev_info['function'])))
driver = E.driver(name=dev_info['detach_driver'])
if is_multifunction:
multi = E.address(type='pci',
domain='0',
bus='0',
slot=str(slot),
function=str(dev_info['function']))
if dev_info['function'] == 0:
multi = E.address(type='pci',
domain='0',
bus='0',
slot=str(slot),
function=str(dev_info['function']),
multifunction='on')
host_dev = E.hostdev(source, driver, multi,
mode='subsystem', type='pci', managed='yes')
else:
host_dev = E.hostdev(source, driver,
mode='subsystem', type='pci', managed='yes')
return ET.tostring(host_dev)
class MockStorageVolumes(object):
def __init__(self):
base_path = "/dev/disk/by-path/pci-0000:0e:00.0-fc-0x20-lun"
self.scsi_volumes = {'unit:0:0:1': {'capacity': 1024,
'format': 'unknown',
'allocation': 512,
'type': 'block',
'path': base_path + '1',
'used_by': [],
'isvalid': True},
'unit:0:0:2': {'capacity': 2048,
'format': 'unknown',
'allocation': 512,
'type': 'block',
'path': base_path + '2',
'used_by': [],
'isvalid': True}}
class MockVolumeGroups(object):
def __init__(self):
self.data = {"hostVG": {"lvs": [],
"name": "hostVG",
"pvs": ["/dev/vdx"],
"free": 5347737600,
"size": 5347737600},
"kimchiVG": {"lvs": [],
"name": "kimchiVG",
"pvs": ["/dev/vdz", "/dev/vdw"],
"free": 10695475200,
"size": 10695475200}}
class MockPartitions(object):
def __init__(self):
self.partitions = {"vdx": {"available": True, "name": "vdx",
"fstype": "", "path": "/dev/vdx",
"mountpoint": "", "type": "disk",
"size": "2147483648"},
"vdz": {"available": True, "name": "vdz",
"fstype": "", "path": "/dev/vdz",
"mountpoint": "", "type": "disk",
"size": "2147483648"}}
class MockDevices(object):
def __init__(self):
self.devices = {
'computer': {'device_type': 'system',
'firmware': {'release_date': '01/01/2012',
'vendor': 'LENOVO',
'version': 'XXXXX (X.XX )'},
'hardware': {'serial': 'PXXXXX',
'uuid':
'9d660370-820f-4241-8731-5a60c97e8aa6',
'vendor': 'LENOVO',
'version': 'ThinkPad T420'},
'name': 'computer',
'parent': None,
'product': '4180XXX'},
'pci_0000_03_00_0': {'bus': 3,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'iwlwifi'},
'function': 0,
'iommuGroup': 7,
'name': 'pci_0000_03_00_0',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:03:00.0',
'product': {
'description':
'Centrino Advanced-N 6205 [Taylor Peak]',
'id': '0x0085'},
'slot': 0,
'vga3d': False,
'vendor': {'description': 'Intel Corporation',
'id': '0x8086'}},
'pci_0000_0d_00_0': {'bus': 13,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'sdhci-pci'},
'function': 0,
'iommuGroup': 7,
'name': 'pci_0000_0d_00_0',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:0d:00.0',
'product': {'description':
'PCIe SDXC/MMC Host Controller',
'id': '0xe823'},
'slot': 0,
'vga3d': False,
'vendor': {'description': 'Ricoh Co Ltd',
'id': '0x1180'}},
'pci_0000_09_01_0': {'bus': 9,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'tg3'},
'function': 0,
'iommuGroup': 8,
'name': 'pci_0000_09_01_0',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:09:01.0',
'product': {'description':
'NetXtreme BCM5719',
'id': '0x1657'},
'slot': 1,
'vga3d': False,
'vendor': {'description': 'Broadcom Corp',
'id': '0x14e4'}},
'pci_0000_09_01_1': {'bus': 9,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'tg3'},
'function': 1,
'iommuGroup': 8,
'name': 'pci_0000_09_01_1',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:09:01.1',
'product': {'description':
'NetXtreme BCM5719',
'id': '0x1657'},
'slot': 1,
'vga3d': False,
'vendor': {'description': 'Broadcom Corp',
'id': '0x14e4'}},
'pci_0000_09_01_2': {'bus': 9,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'tg3'},
'function': 2,
'iommuGroup': 8,
'name': 'pci_0000_09_01_2',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:09:01.2',
'product': {'description':
'NetXtreme BCM5719',
'id': '0x1657'},
'slot': 1,
'vga3d': False,
'vendor': {'description': 'Broadcom Corp',
'id': '0x14e4'}},
'pci_0000_1a_00_0': {'bus': 26,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'nvidia'},
'function': 0,
'iommuGroup': 9,
'name': 'pci_0000_1a_00_0',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:1a:00.0',
'product': {'description':
'GK210GL [Tesla K80]',
'id': '0x0302'},
'slot': 0,
'vga3d': True,
'vendor': {'description': 'NVIDIA Corp',
'id': '0x10de'}},
'pci_0001_1b_00_0': {'bus': 27,
'device_type': 'pci',
'domain': 1,
'driver': {'name': 'nvidia'},
'function': 0,
'iommuGroup': 7,
'name': 'pci_0001_1b_00_0',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0001:1b:00.0',
'product': {'description':
'GK210GL [Tesla K80]',
'id': '0x0302'},
'slot': 0,
'vga3d': True,
'vendor': {'description': 'NVIDIA Corp',
'id': '0x10de'}},
'pci_0000_1c_00_0': {'bus': 28,
'device_type': 'pci',
'domain': 0,
'driver': {'name': 'nvidia'},
'function': 0,
'iommuGroup': 7,
'name': 'pci_0000_1c_00_0',
'parent': 'computer',
'path':
'/sys/devices/pci0000:00/0000:0d:00.0',
'product': {'description':
'GK210GL [Tesla K80]',
'id': '0x0302'},
'slot': 0,
'vga3d': True,
'vendor': {'description': 'NVIDIA Corp',
'id': '0x10de'}},
'scsi_host0': {'adapter': {'fabric_wwn': '37df6c1efa1b4388',
'type': 'fc_host',
'wwnn': 'efb6563f06434a98',
'wwpn': '742f32073aab45d7'},
'device_type': 'scsi_host',
'host': 0,
'name': 'scsi_host0',
'parent': 'computer',
'path': '/sys/devices/pci0000:00/0000:40:00.0/0'},
'scsi_host1': {'adapter': {'fabric_wwn': '542efa5dced34123',
'type': 'fc_host',
'wwnn': 'b7433a40c9b84092',
'wwpn': '25c1f485ae42497f'},
'device_type': 'scsi_host',
'host': 0,
'name': 'scsi_host1',
'parent': 'computer',
'path': '/sys/devices/pci0000:00/0000:40:00.0/1'},
'scsi_host2': {'adapter': {'fabric_wwn': '5c373c334c20478d',
'type': 'fc_host',
'wwnn': 'f2030bec4a254e6b',
'wwpn': '07dbca4164d44096'},
'device_type': 'scsi_host',
'host': 0,
'name': 'scsi_host2',
'parent': 'computer',
'path': '/sys/devices/pci0000:00/0000:40:00.0/2'}}
class MockVMSnapshot(object):
def __init__(self, name, params={}):
self.name = name
self.current = True
self.info = {'created': params.get('created',
unicode(int(time.time()))),
'name': name,
'parent': params.get('parent', u''),
'state': params.get('state', u'shutoff')}