rwcal/plugins/vala/rwcal_openstack/rift/rwcal/openstack/utils/compute.py

   1 #!/usr/bin/python
   2
   3 #
   4 #   Copyright 2017 RIFT.IO Inc
   5 #
   6 #   Licensed under the Apache License, Version 2.0 (the "License");
   7 #   you may not use this file except in compliance with the License.
   8 #   You may obtain a copy of the License at
   9 #
  10 #       http://www.apache.org/licenses/LICENSE-2.0
  11 #
  12 #   Unless required by applicable law or agreed to in writing, software
  13 #   distributed under the License is distributed on an "AS IS" BASIS,
  14 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15 #   See the License for the specific language governing permissions and
  16 #   limitations under the License.
  17 #
  18 import uuid
  19 import gi
  20 gi.require_version('RwcalYang', '1.0')
  21 from gi.repository import RwcalYang
  22
  23
  24 class ImageValidateError(Exception):
  25     pass
  26
  27 class VolumeValidateError(Exception):
  28     pass
  29
  30 class AffinityGroupError(Exception):
  31     pass
  32
  33
  34 class ComputeUtils(object):
  35     """
  36     Utility class for compute operations
  37     """
  38     epa_types = ['vm_flavor',
  39                  'guest_epa',
  40                  'host_epa',
  41                  'host_aggregate',
  42                  'hypervisor_epa',
  43                  'vswitch_epa']
  44     def __init__(self, driver):
  45         """
  46         Constructor for class
  47         Arguments:
  48            driver: object of OpenstackDriver()
  49         """
  50         self._driver = driver
  51         self.log = driver.log
  52
  53     @property
  54     def driver(self):
  55         return self._driver
  56
  57     def search_vdu_flavor(self, vdu_params):
  58         """
  59         Function to search a matching flavor for VDU instantiation
  60         from already existing flavors
  61
  62         Arguments:
  63           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
  64
  65         Returns:
  66            flavor_id(string): Flavor id for VDU instantiation
  67            None if no flavor could be found
  68         """
  69         kwargs = { 'vcpus': vdu_params.vm_flavor.vcpu_count,
  70                    'ram'  : vdu_params.vm_flavor.memory_mb,
  71                    'disk' : vdu_params.vm_flavor.storage_gb,}
  72
  73         flavors = self.driver.nova_flavor_find(**kwargs)
  74         flavor_list = list()
  75         for flv in flavors:
  76             flavor_list.append(self.driver.utils.flavor.parse_flavor_info(flv))
  77
  78         flavor_id = self.driver.utils.flavor.match_resource_flavor(vdu_params, flavor_list)
  79         return flavor_id
  80
  81     def select_vdu_flavor(self, vdu_params):
  82         """
  83         This function attempts to find a pre-existing flavor matching required
  84         parameters for VDU instantiation. If no such flavor is found, a new one
  85         is created.
  86
  87         Arguments:
  88           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
  89
  90         Returns:
  91            flavor_id(string): Flavor id for VDU instantiation
  92         """
  93         flavor_id = self.search_vdu_flavor(vdu_params)
  94         if flavor_id is not None:
  95             self.log.info("Found flavor with id: %s matching requirements for VDU: %s",
  96                           flavor_id, vdu_params.name)
  97             return flavor_id
  98
  99         flavor = RwcalYang.FlavorInfoItem()
 100         flavor.name = str(uuid.uuid4())
 101
 102         epa_dict = { k: v for k, v in vdu_params.as_dict().items()
 103                      if k in ComputeUtils.epa_types }
 104
 105         flavor.from_dict(epa_dict)
 106
 107         flavor_id = self.driver.nova_flavor_create(name      = flavor.name,
 108                                                    ram       = flavor.vm_flavor.memory_mb,
 109                                                    vcpus     = flavor.vm_flavor.vcpu_count,
 110                                                    disk      = flavor.vm_flavor.storage_gb,
 111                                                    epa_specs = self.driver.utils.flavor.get_extra_specs(flavor))
 112         return flavor_id
 113
 114     def make_vdu_flavor_args(self, vdu_params):
 115         """
 116         Creates flavor related arguments for VDU operation
 117         Arguments:
 118           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 119
 120         Returns:
 121            A dictionary {'flavor_id': <flavor-id>}
 122         """
 123         return {'flavor_id': self.select_vdu_flavor(vdu_params)}
 124
 125
 126     def make_vdu_image_args(self, vdu_params):
 127         """
 128         Creates image related arguments for VDU operation
 129         Arguments:
 130           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 131
 132         Returns:
 133            A dictionary {'image_id': <image-id>}
 134
 135         """
 136         kwargs = dict()
 137         if vdu_params.has_field('image_name'):
 138             kwargs['image_id'] = self.resolve_image_n_validate(vdu_params.image_name,
 139                                                                vdu_params.image_checksum)
 140         elif vdu_params.has_field('image_id'):
 141             kwargs['image_id'] = vdu_params.image_id
 142
 143         return kwargs
 144
 145     def resolve_image_n_validate(self, image_name, checksum = None):
 146         """
 147         Resolve the image_name to image-object by matching image_name and checksum
 148
 149         Arguments:
 150           image_name (string): Name of image
 151           checksums  (string): Checksum associated with image
 152
 153         Raises ImageValidateError in case of Errors
 154         """
 155         image_info = [ i for i in self.driver._glance_image_list if i['name'] == image_name]
 156
 157         if not image_info:
 158             self.log.error("No image with name: %s found", image_name)
 159             raise ImageValidateError("No image with name %s found" %(image_name))
 160
 161         for image in image_info:
 162             if 'status' not in image or image['status'] != 'active':
 163                 self.log.error("Image %s not in active state. Current state: %s",
 164                                image_name, image['status'])
 165                 raise ImageValidateError("Image with name %s found in incorrect (%s) state"
 166                                          %(image_name, image['status']))
 167             if not checksum or checksum == image['checksum']:
 168                 break
 169         else:
 170             self.log.info("No image found with matching name: %s and checksum: %s",
 171                           image_name, checksum)
 172             raise ImageValidateError("No image found with matching name: %s and checksum: %s"
 173                                      %(image_name, checksum))
 174         return image['id']
 175
 176     def resolve_volume_n_validate(self, volume_ref):
 177         """
 178         Resolve the volume reference
 179
 180         Arguments:
 181           volume_ref (string): Name of volume reference
 182
 183         Raises VolumeValidateError in case of Errors
 184         """
 185
 186         for vol in self.driver._cinder_volume_list:
 187             voldict = vol.to_dict()
 188             if voldict['display_name'] == volume_ref:
 189                 if 'status' in voldict and voldict['status'] == 'available':
 190                     return voldict['id']
 191                 else:
 192                     self.log.error("Volume %s not in available state. Current state: %s",
 193                                volume_ref, voldict['status'])
 194                     raise VolumeValidateError("Volume with name %s found in incorrect (%s) state"
 195                                          %(volume_ref, vol['status']))
 196
 197         self.log.info("No volume found with matching name: %s ", volume_ref)
 198         raise VolumeValidateError("No volume found with matching name: %s " %(volume_ref))
 199
 200     def make_vdu_volume_args(self, volume, vdu_params):
 201         """
 202         Arguments:
 203            volume:   Protobuf GI object RwcalYang.VDUInitParams_Volumes()
 204            vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 205
 206         Returns:
 207            A dictionary required to create volume for VDU
 208
 209         Raises VolumeValidateError in case of Errors
 210         """
 211         kwargs = dict()
 212
 213         kwargs['boot_index'] = volume.boot_priority
 214         if volume.has_field("image"):
 215             # Support image->volume
 216             kwargs['source_type'] = "image"
 217             kwargs['uuid'] = self.resolve_image_n_validate(volume.image, volume.image_checksum)
 218             kwargs['delete_on_termination'] = True
 219         elif "volume_ref" in volume:
 220             # Support volume-ref->volume (only ref)
 221             kwargs['source_type'] = "volume"
 222             kwargs['uuid'] = self.resolve_volume_n_validate(volume.volume_ref)
 223             kwargs['delete_on_termination'] = False
 224         else:
 225             # Support blank->volume
 226             kwargs['source_type'] = "blank"
 227             kwargs['delete_on_termination'] = True
 228         kwargs['device_name'] = volume.name
 229         kwargs['destination_type'] = "volume"
 230         kwargs['volume_size'] = volume.size
 231
 232         if volume.has_field('device_type'):
 233             if volume.device_type in ['cdrom', 'disk']:
 234                 kwargs['device_type'] = volume.device_type
 235             else:
 236                 self.log.error("Unsupported device_type <%s> found for volume: %s",
 237                                volume.device_type, volume.name)
 238                 raise VolumeValidateError("Unsupported device_type <%s> found for volume: %s"
 239                                           %(volume.device_type, volume.name))
 240         else:
 241             self.log.error("Mandatory field <device_type> not specified for volume: %s",
 242                            volume.name)
 243             raise VolumeValidateError("Mandatory field <device_type> not specified for volume: %s"
 244                                       %(volume.name))
 245
 246         if volume.has_field('device_bus'):
 247             if volume.device_bus in ['ide', 'virtio', 'scsi']:
 248                 kwargs['disk_bus'] = volume.device_bus
 249             else:
 250                 self.log.error("Unsupported device_bus <%s> found for volume: %s",
 251                                volume.device_bus, volume.name)
 252                 raise VolumeValidateError("Unsupported device_bus <%s> found for volume: %s"
 253                                           %(volume.device_bus, volume.name))
 254         else:
 255             self.log.error("Mandatory field <device_bus> not specified for volume: %s",
 256                            volume.name)
 257             raise VolumeValidateError("Mandatory field <device_bus> not specified for volume: %s"
 258                                       %(volume.name))
 259
 260         return kwargs
 261
 262     def make_vdu_storage_args(self, vdu_params):
 263         """
 264         Creates volume related arguments for VDU operation
 265
 266         Arguments:
 267           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 268
 269         Returns:
 270            A dictionary required for volumes creation for VDU instantiation
 271         """
 272         kwargs = dict()
 273         if vdu_params.has_field('volumes'):
 274             kwargs['block_device_mapping_v2'] = list()
 275             # Ignore top-level image
 276             kwargs['image_id']  = ""
 277             for volume in vdu_params.volumes:
 278                 kwargs['block_device_mapping_v2'].append(self.make_vdu_volume_args(volume, vdu_params))
 279         return kwargs
 280
 281     def make_vdu_network_args(self, vdu_params):
 282         """
 283         Creates VDU network related arguments for VDU operation
 284         Arguments:
 285           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 286
 287         Returns:
 288            A dictionary {'port_list' : [ports], 'network_list': [networks]}
 289
 290         """
 291         kwargs = dict()
 292         kwargs['port_list'], kwargs['network_list'] = self.driver.utils.network.setup_vdu_networking(vdu_params)
 293         return kwargs
 294
 295
 296     def make_vdu_boot_config_args(self, vdu_params):
 297         """
 298         Creates VDU boot config related arguments for VDU operation
 299         Arguments:
 300           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 301
 302         Returns:
 303           A dictionary {
 304                          'userdata'    :  <cloud-init> ,
 305                          'config_drive':  True/False,
 306                          'files'       :  [ file name ],
 307                          'metadata'    :  <metadata string>
 308         }
 309         """
 310         kwargs = dict()
 311         metadata = dict()
 312
 313         if vdu_params.has_field('node_id'):
 314             metadata['rift_node_id'] = vdu_params.node_id
 315             kwargs['metadata'] = metadata
 316
 317         if vdu_params.has_field('vdu_init') and vdu_params.vdu_init.has_field('userdata'):
 318             kwargs['userdata'] = vdu_params.vdu_init.userdata
 319         else:
 320             kwargs['userdata'] = ''
 321
 322         if not vdu_params.has_field('supplemental_boot_data'):
 323             return kwargs
 324
 325         if vdu_params.supplemental_boot_data.has_field('config_file'):
 326             files = dict()
 327             for cf in vdu_params.supplemental_boot_data.config_file:
 328                 files[cf.dest] = cf.source
 329             kwargs['files'] = files
 330
 331         if vdu_params.supplemental_boot_data.has_field('boot_data_drive'):
 332             kwargs['config_drive'] = vdu_params.supplemental_boot_data.boot_data_drive
 333         else:
 334             kwargs['config_drive'] = False
 335
 336         try:
 337             # Rift model only
 338             if vdu_params.supplemental_boot_data.has_field('custom_meta_data'):
 339                 metadata = dict()
 340                 for cm in vdu_params.supplemental_boot_data.custom_meta_data:
 341                     metadata[cm.name] = cm.value
 342                     kwargs['metadata'] = metadata
 343         except Exception as e:
 344             pass
 345
 346         return kwargs
 347
 348     def _select_affinity_group(self, group_name):
 349         """
 350         Selects the affinity group based on name and return its id
 351         Arguments:
 352           group_name (string): Name of the Affinity/Anti-Affinity group
 353         Returns:
 354           Id of the matching group
 355
 356         Raises exception AffinityGroupError if no matching group is found
 357         """
 358         groups = [g['id'] for g in self.driver._nova_affinity_group if g['name'] == group_name]
 359         if not groups:
 360             self.log.error("No affinity/anti-affinity group with name: %s found", group_name)
 361             raise AffinityGroupError("No affinity/anti-affinity group with name: %s found" %(group_name))
 362         return groups[0]
 363
 364
 365     def make_vdu_server_placement_args(self, vdu_params):
 366         """
 367         Function to create kwargs required for nova server placement
 368
 369         Arguments:
 370           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 371
 372         Returns:
 373          A dictionary { 'availability_zone' : < Zone >, 'scheduler_hints': <group-id> }
 374
 375         """
 376         kwargs = dict()
 377
 378         if vdu_params.has_field('availability_zone') \
 379            and vdu_params.availability_zone.has_field('name'):
 380             kwargs['availability_zone']  = vdu_params.availability_zone
 381
 382         if vdu_params.has_field('server_group'):
 383             kwargs['scheduler_hints'] = {
 384                 'group': self._select_affinity_group(vdu_params.server_group)
 385             }
 386         return kwargs
 387
 388     def make_vdu_server_security_args(self, vdu_params, account):
 389         """
 390         Function to create kwargs required for nova security group
 391
 392         Arguments:
 393           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 394           account: Protobuf GI object RwcalYang.CloudAccount()
 395
 396         Returns:
 397           A dictionary {'security_groups' : < group > }
 398         """
 399         kwargs = dict()
 400         if account.openstack.security_groups:
 401             kwargs['security_groups'] = account.openstack.security_groups
 402         return kwargs
 403
 404
 405     def make_vdu_create_args(self, vdu_params, account):
 406         """
 407         Function to create kwargs required for nova_server_create API
 408
 409         Arguments:
 410           vdu_params: Protobuf GI object RwcalYang.VDUInitParams()
 411           account: Protobuf GI object RwcalYang.CloudAccount()
 412
 413         Returns:
 414           A kwargs dictionary for VDU create operation
 415         """
 416         kwargs = dict()
 417
 418         kwargs['name'] = vdu_params.name
 419
 420         kwargs.update(self.make_vdu_flavor_args(vdu_params))
 421         kwargs.update(self.make_vdu_storage_args(vdu_params))
 422         kwargs.update(self.make_vdu_image_args(vdu_params))
 423         kwargs.update(self.make_vdu_network_args(vdu_params))
 424         kwargs.update(self.make_vdu_boot_config_args(vdu_params))
 425         kwargs.update(self.make_vdu_server_placement_args(vdu_params))
 426         kwargs.update(self.make_vdu_server_security_args(vdu_params, account))
 427         return kwargs
 428
 429
 430     def _parse_vdu_mgmt_address_info(self, vm_info):
 431         """
 432         Get management_ip and public_ip for VDU
 433
 434         Arguments:
 435           vm_info : A dictionary object return by novaclient library listing VM attributes
 436
 437         Returns:
 438           A tuple of mgmt_ip (string) and public_ip (string)
 439         """
 440         mgmt_ip = None
 441         public_ip = None
 442         if 'addresses' in vm_info:
 443             for network_name, network_info in vm_info['addresses'].items():
 444                 if network_info and network_name == self.driver.mgmt_network:
 445                     for interface in network_info:
 446                         if 'OS-EXT-IPS:type' in interface:
 447                             if interface['OS-EXT-IPS:type'] == 'fixed':
 448                                 mgmt_ip = interface['addr']
 449                             elif interface['OS-EXT-IPS:type'] == 'floating':
 450                                 public_ip = interface['addr']
 451         return (mgmt_ip, public_ip)
 452
 453     def get_vdu_epa_info(self, vm_info):
 454         """
 455         Get flavor information (including EPA) for VDU
 456
 457         Arguments:
 458           vm_info : A dictionary returned by novaclient library listing VM attributes
 459         Returns:
 460           flavor_info: A dictionary object returned by novaclient library listing flavor attributes
 461         """
 462         if 'flavor' in vm_info and 'id' in vm_info['flavor']:
 463             try:
 464                 flavor_info = self.driver.nova_flavor_get(vm_info['flavor']['id'])
 465                 return flavor_info
 466             except Exception as e:
 467                 self.log.exception("Exception %s occured during get-flavor", str(e))
 468         return dict()
 469
 470     def _parse_vdu_cp_info(self, vdu_id):
 471         """
 472         Get connection point information for VDU identified by vdu_id
 473         Arguments:
 474         vdu_id (string) : VDU Id (vm_info['id'])
 475         Returns:
 476         A List of object RwcalYang.VDUInfoParams_ConnectionPoints()
 477
 478         """
 479         cp_list = []
 480         # Fill the port information
 481         port_list = self.driver.neutron_port_list(**{'device_id': vdu_id})
 482         for port in port_list:
 483             cp_info = self.driver.utils.network._parse_cp(port)
 484             cp = RwcalYang.VDUInfoParams_ConnectionPoints()
 485             cp.from_dict(cp_info.as_dict())
 486             cp_list.append(cp)
 487         return cp_list
 488
 489     def _parse_vdu_state_info(self, vm_info):
 490         """
 491         Get VDU state information
 492
 493         Arguments:
 494           vm_info : A dictionary returned by novaclient library listing VM attributes
 495
 496         Returns:
 497           state (string): State of the VDU
 498         """
 499         if 'status' in vm_info:
 500             if vm_info['status'] == 'ACTIVE':
 501                 vdu_state = 'active'
 502             elif vm_info['status'] == 'ERROR':
 503                 vdu_state = 'failed'
 504             else:
 505                 vdu_state = 'inactive'
 506         else:
 507             vdu_state = 'unknown'
 508         return vdu_state
 509
 510     def _parse_vdu_server_group_info(self, vm_info):
 511         """
 512         Get VDU server group information
 513         Arguments:
 514           vm_info : A dictionary returned by novaclient library listing VM attributes
 515
 516         Returns:
 517           server_group_name (string): Name of the server group to which VM belongs, else empty string
 518
 519         """
 520         server_group = [ v['name']
 521                          for v in self.driver.nova_server_group_list()
 522                          if vm_info['id'] in v['members'] ]
 523         if server_group:
 524             return server_group[0]
 525         else:
 526             return str()
 527
 528     def _parse_vdu_boot_config_data(self, vm_info):
 529         """
 530         Parses VDU supplemental boot data
 531         Arguments:
 532           vm_info : A dictionary returned by novaclient library listing VM attributes
 533
 534         Returns:
 535           List of RwcalYang.VDUInfoParams_SupplementalBootData()
 536         """
 537         supplemental_boot_data = None
 538         node_id = None
 539         if 'config_drive' in vm_info:
 540             supplemental_boot_data = RwcalYang.VDUInfoParams_SupplementalBootData()
 541             supplemental_boot_data.boot_data_drive = vm_info['config_drive']
 542         # Look for any metadata
 543         if 'metadata' not in vm_info:
 544             return node_id, supplemental_boot_data
 545         if supplemental_boot_data is None:
 546             supplemental_boot_data = RwcalYang.VDUInfoParams_SupplementalBootData()
 547         for key, value in vm_info['metadata'].items():
 548             if key == 'rift_node_id':
 549                 node_id = value
 550             else:
 551                 try:
 552                     # rift only
 553                     cm = supplemental_boot_data.custom_meta_data.add()
 554                     cm.name = key
 555                     cm.value = str(value)
 556                 except Exception as e:
 557                     pass
 558         return node_id, supplemental_boot_data
 559
 560     def _parse_vdu_volume_info(self, vm_info):
 561         """
 562         Get VDU server group information
 563         Arguments:
 564           vm_info : A dictionary returned by novaclient library listing VM attributes
 565
 566         Returns:
 567           List of RwcalYang.VDUInfoParams_Volumes()
 568         """
 569         volumes = list()
 570
 571         try:
 572             volume_list = self.driver.nova_volume_list(vm_info['id'])
 573         except Exception as e:
 574             self.log.exception("Exception %s occured during nova-volume-list", str(e))
 575             return volumes
 576
 577         for v in volume_list:
 578             volume = RwcalYang.VDUInfoParams_Volumes()
 579             try:
 580                 volume.name = (v['device']).split('/')[2]
 581                 volume.volume_id = v['volumeId']
 582                 details = self.driver.cinder_volume_get(volume.volume_id)
 583                 for k, v in details.metadata.items():
 584                     vd = volume.custom_meta_data.add()
 585                     vd.name = k
 586                     vd.value = v
 587             except Exception as e:
 588                 self.log.exception("Exception %s occured during volume list parsing", str(e))
 589                 continue
 590             else:
 591                 volumes.append(volume)
 592         return volumes
 593
 594     def _parse_vdu_console_url(self, vm_info):
 595         """
 596         Get VDU console URL
 597         Arguments:
 598           vm_info : A dictionary returned by novaclient library listing VM attributes
 599
 600         Returns:
 601           console_url(string): Console URL for VM
 602         """
 603         console_url = None
 604         if self._parse_vdu_state_info(vm_info) == 'active':
 605             try:
 606                 serv_console_url = self.driver.nova_server_console(vm_info['id'])
 607                 if 'console' in serv_console_url:
 608                     console_url = serv_console_url['console']['url']
 609                 else:
 610                     self.log.error("Error fetching console url. This could be an Openstack issue. Console : " + str(serv_console_url))
 611
 612
 613             except Exception as e:
 614                 self.log.exception("Exception %s occured during volume list parsing", str(e))
 615         return console_url
 616
 617     def parse_cloud_vdu_info(self, vm_info):
 618         """
 619         Parse vm_info dictionary (return by python-client) and put values in GI object for VDU
 620
 621         Arguments:
 622            vm_info : A dictionary object return by novaclient library listing VM attributes
 623
 624         Returns:
 625            Protobuf GI Object of type RwcalYang.VDUInfoParams()
 626         """
 627         vdu = RwcalYang.VDUInfoParams()
 628         vdu.name = vm_info['name']
 629         vdu.vdu_id = vm_info['id']
 630         vdu.cloud_type  = 'openstack'
 631
 632         if 'config_drive' in vm_info:
 633             vdu.supplemental_boot_data.boot_data_drive = vm_info['config_drive']
 634
 635         if 'image' in vm_info and 'id' in vm_info['image']:
 636             vdu.image_id = vm_info['image']['id']
 637
 638         if 'availability_zone' in vm_info:
 639             vdu.availability_zone = vm_info['availability_zone']
 640
 641         vdu.state = self._parse_vdu_state_info(vm_info)
 642         management_ip,public_ip = self._parse_vdu_mgmt_address_info(vm_info)
 643
 644         if management_ip:
 645             vdu.management_ip = management_ip
 646
 647         if public_ip:
 648             vdu.public_ip = public_ip
 649
 650         if 'flavor' in vm_info and 'id' in vm_info['flavor']:
 651             vdu.flavor_id = vm_info['flavor']['id']
 652             flavor_info = self.get_vdu_epa_info(vm_info)
 653             vm_flavor = self.driver.utils.flavor.parse_vm_flavor_epa_info(flavor_info)
 654             guest_epa = self.driver.utils.flavor.parse_guest_epa_info(flavor_info)
 655             host_epa = self.driver.utils.flavor.parse_host_epa_info(flavor_info)
 656             host_aggregates = self.driver.utils.flavor.parse_host_aggregate_epa_info(flavor_info)
 657
 658             vdu.vm_flavor.from_dict(vm_flavor.as_dict())
 659             vdu.guest_epa.from_dict(guest_epa.as_dict())
 660             vdu.host_epa.from_dict(host_epa.as_dict())
 661             for aggr in host_aggregates:
 662                 ha = vdu.host_aggregate.add()
 663                 ha.from_dict(aggr.as_dict())
 664
 665         vdu.node_id, vdu.supplemental_boot_data = self._parse_vdu_boot_config_data(vm_info)
 666
 667         cp_list = self._parse_vdu_cp_info(vdu.vdu_id)
 668         for cp in cp_list:
 669             vdu.connection_points.append(cp)
 670
 671         vdu.server_group.name = self._parse_vdu_server_group_info(vm_info)
 672
 673         for v in self._parse_vdu_volume_info(vm_info):
 674             vdu.volumes.append(v)
 675
 676         vdu.console_url = self._parse_vdu_console_url(vm_info)
 677         return vdu
 678
 679
 680     def perform_vdu_network_cleanup(self, vdu_id):
 681         """
 682         This function cleans up networking resources related to VDU
 683         Arguments:
 684            vdu_id(string): VDU id
 685         Returns:
 686            None
 687         """
 688         ### Get list of floating_ips associated with this instance and delete them
 689         floating_ips = [ f for f in self.driver.nova_floating_ip_list() if f.instance_id == vdu_id ]
 690         for f in floating_ips:
 691             self.driver.nova_floating_ip_delete(f)
 692
 693         ### Get list of port on VM and delete them.
 694         port_list = self.driver.neutron_port_list(**{'device_id': vdu_id})
 695
 696         for port in port_list:
 697             if ((port['device_owner'] == 'compute:None') or (port['device_owner'] == '')):
 698                 self.driver.neutron_port_delete(port['id'])
 699