NG-RO/osm_ng_ro/ns.py

   1 # -*- coding: utf-8 -*-
   2
   3 ##
   4 # Copyright 2020 Telefonica Investigacion y Desarrollo, S.A.U.
   5 # Licensed under the Apache License, Version 2.0 (the "License");
   6 # you may not use this file except in compliance with the License.
   7 # You may obtain a copy of the License at
   8 #
   9 #    http://www.apache.org/licenses/LICENSE-2.0
  10 #
  11 # Unless required by applicable law or agreed to in writing, software
  12 # distributed under the License is distributed on an "AS IS" BASIS,
  13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  14 # implied.
  15 # See the License for the specific language governing permissions and
  16 # limitations under the License.
  17 ##
  18
  19 from http import HTTPStatus
  20 from itertools import product
  21 import logging
  22 from random import choice as random_choice
  23 from threading import Lock
  24 from time import time
  25 from traceback import format_exc as traceback_format_exc
  26 from typing import Any, Dict, List, Optional, Tuple, Type
  27 from uuid import uuid4
  28
  29 from cryptography.hazmat.backends import default_backend as crypto_default_backend
  30 from cryptography.hazmat.primitives import serialization as crypto_serialization
  31 from cryptography.hazmat.primitives.asymmetric import rsa
  32 from jinja2 import (
  33     Environment,
  34     select_autoescape,
  35     StrictUndefined,
  36     TemplateError,
  37     TemplateNotFound,
  38     UndefinedError,
  39 )
  40 from osm_common import (
  41     dbmemory,
  42     dbmongo,
  43     fslocal,
  44     fsmongo,
  45     msgkafka,
  46     msglocal,
  47     version as common_version,
  48 )
  49 from osm_common.dbbase import DbBase, DbException
  50 from osm_common.fsbase import FsBase, FsException
  51 from osm_common.msgbase import MsgException
  52 from osm_ng_ro.ns_thread import deep_get, NsWorker, NsWorkerException
  53 from osm_ng_ro.validation import deploy_schema, validate_input
  54 import yaml
  55
  56 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
  57 min_common_version = "0.1.16"
  58
  59
  60 class NsException(Exception):
  61     def __init__(self, message, http_code=HTTPStatus.BAD_REQUEST):
  62         self.http_code = http_code
  63         super(Exception, self).__init__(message)
  64
  65
  66 def get_process_id():
  67     """
  68     Obtain a unique ID for this process. If running from inside docker, it will get docker ID. If not it
  69     will provide a random one
  70     :return: Obtained ID
  71     """
  72     # Try getting docker id. If fails, get pid
  73     try:
  74         with open("/proc/self/cgroup", "r") as f:
  75             text_id_ = f.readline()
  76             _, _, text_id = text_id_.rpartition("/")
  77             text_id = text_id.replace("\n", "")[:12]
  78
  79             if text_id:
  80                 return text_id
  81     except Exception as error:
  82         logging.exception(f"{error} occured while getting process id")
  83
  84     # Return a random id
  85     return "".join(random_choice("0123456789abcdef") for _ in range(12))
  86
  87
  88 def versiontuple(v):
  89     """utility for compare dot separate versions. Fills with zeros to proper number comparison"""
  90     filled = []
  91
  92     for point in v.split("."):
  93         filled.append(point.zfill(8))
  94
  95     return tuple(filled)
  96
  97
  98 class Ns(object):
  99     def __init__(self):
 100         self.db = None
 101         self.fs = None
 102         self.msg = None
 103         self.config = None
 104         # self.operations = None
 105         self.logger = None
 106         # ^ Getting logger inside method self.start because parent logger (ro) is not available yet.
 107         # If done now it will not be linked to parent not getting its handler and level
 108         self.map_topic = {}
 109         self.write_lock = None
 110         self.vims_assigned = {}
 111         self.next_worker = 0
 112         self.plugins = {}
 113         self.workers = []
 114         self.process_params_function_map = {
 115             "net": Ns._process_net_params,
 116             "image": Ns._process_image_params,
 117             "flavor": Ns._process_flavor_params,
 118             "vdu": Ns._process_vdu_params,
 119             "affinity-or-anti-affinity-group": Ns._process_affinity_group_params,
 120         }
 121         self.db_path_map = {
 122             "net": "vld",
 123             "image": "image",
 124             "flavor": "flavor",
 125             "vdu": "vdur",
 126             "affinity-or-anti-affinity-group": "affinity-or-anti-affinity-group",
 127         }
 128
 129     def init_db(self, target_version):
 130         pass
 131
 132     def start(self, config):
 133         """
 134         Connect to database, filesystem storage, and messaging
 135         :param config: two level dictionary with configuration. Top level should contain 'database', 'storage',
 136         :param config: Configuration of db, storage, etc
 137         :return: None
 138         """
 139         self.config = config
 140         self.config["process_id"] = get_process_id()  # used for HA identity
 141         self.logger = logging.getLogger("ro.ns")
 142
 143         # check right version of common
 144         if versiontuple(common_version) < versiontuple(min_common_version):
 145             raise NsException(
 146                 "Not compatible osm/common version '{}'. Needed '{}' or higher".format(
 147                     common_version, min_common_version
 148                 )
 149             )
 150
 151         try:
 152             if not self.db:
 153                 if config["database"]["driver"] == "mongo":
 154                     self.db = dbmongo.DbMongo()
 155                     self.db.db_connect(config["database"])
 156                 elif config["database"]["driver"] == "memory":
 157                     self.db = dbmemory.DbMemory()
 158                     self.db.db_connect(config["database"])
 159                 else:
 160                     raise NsException(
 161                         "Invalid configuration param '{}' at '[database]':'driver'".format(
 162                             config["database"]["driver"]
 163                         )
 164                     )
 165
 166             if not self.fs:
 167                 if config["storage"]["driver"] == "local":
 168                     self.fs = fslocal.FsLocal()
 169                     self.fs.fs_connect(config["storage"])
 170                 elif config["storage"]["driver"] == "mongo":
 171                     self.fs = fsmongo.FsMongo()
 172                     self.fs.fs_connect(config["storage"])
 173                 elif config["storage"]["driver"] is None:
 174                     pass
 175                 else:
 176                     raise NsException(
 177                         "Invalid configuration param '{}' at '[storage]':'driver'".format(
 178                             config["storage"]["driver"]
 179                         )
 180                     )
 181
 182             if not self.msg:
 183                 if config["message"]["driver"] == "local":
 184                     self.msg = msglocal.MsgLocal()
 185                     self.msg.connect(config["message"])
 186                 elif config["message"]["driver"] == "kafka":
 187                     self.msg = msgkafka.MsgKafka()
 188                     self.msg.connect(config["message"])
 189                 else:
 190                     raise NsException(
 191                         "Invalid configuration param '{}' at '[message]':'driver'".format(
 192                             config["message"]["driver"]
 193                         )
 194                     )
 195
 196             # TODO load workers to deal with exising database tasks
 197
 198             self.write_lock = Lock()
 199         except (DbException, FsException, MsgException) as e:
 200             raise NsException(str(e), http_code=e.http_code)
 201
 202     def get_assigned_vims(self):
 203         return list(self.vims_assigned.keys())
 204
 205     def stop(self):
 206         try:
 207             if self.db:
 208                 self.db.db_disconnect()
 209
 210             if self.fs:
 211                 self.fs.fs_disconnect()
 212
 213             if self.msg:
 214                 self.msg.disconnect()
 215
 216             self.write_lock = None
 217         except (DbException, FsException, MsgException) as e:
 218             raise NsException(str(e), http_code=e.http_code)
 219
 220         for worker in self.workers:
 221             worker.insert_task(("terminate",))
 222
 223     def _create_worker(self):
 224         """
 225         Look for a worker thread in idle status. If not found it creates one unless the number of threads reach the
 226         limit of 'server.ns_threads' configuration. If reached, it just assigns one existing thread
 227         return the index of the assigned worker thread. Worker threads are storead at self.workers
 228         """
 229         # Look for a thread in idle status
 230         worker_id = next(
 231             (
 232                 i
 233                 for i in range(len(self.workers))
 234                 if self.workers[i] and self.workers[i].idle
 235             ),
 236             None,
 237         )
 238
 239         if worker_id is not None:
 240             # unset idle status to avoid race conditions
 241             self.workers[worker_id].idle = False
 242         else:
 243             worker_id = len(self.workers)
 244
 245             if worker_id < self.config["global"]["server.ns_threads"]:
 246                 # create a new worker
 247                 self.workers.append(
 248                     NsWorker(worker_id, self.config, self.plugins, self.db)
 249                 )
 250                 self.workers[worker_id].start()
 251             else:
 252                 # reached maximum number of threads, assign VIM to an existing one
 253                 worker_id = self.next_worker
 254                 self.next_worker = (self.next_worker + 1) % self.config["global"][
 255                     "server.ns_threads"
 256                 ]
 257
 258         return worker_id
 259
 260     def assign_vim(self, target_id):
 261         with self.write_lock:
 262             return self._assign_vim(target_id)
 263
 264     def _assign_vim(self, target_id):
 265         if target_id not in self.vims_assigned:
 266             worker_id = self.vims_assigned[target_id] = self._create_worker()
 267             self.workers[worker_id].insert_task(("load_vim", target_id))
 268
 269     def reload_vim(self, target_id):
 270         # send reload_vim to the thread working with this VIM and inform all that a VIM has been changed,
 271         # this is because database VIM information is cached for threads working with SDN
 272         with self.write_lock:
 273             for worker in self.workers:
 274                 if worker and not worker.idle:
 275                     worker.insert_task(("reload_vim", target_id))
 276
 277     def unload_vim(self, target_id):
 278         with self.write_lock:
 279             return self._unload_vim(target_id)
 280
 281     def _unload_vim(self, target_id):
 282         if target_id in self.vims_assigned:
 283             worker_id = self.vims_assigned[target_id]
 284             self.workers[worker_id].insert_task(("unload_vim", target_id))
 285             del self.vims_assigned[target_id]
 286
 287     def check_vim(self, target_id):
 288         with self.write_lock:
 289             if target_id in self.vims_assigned:
 290                 worker_id = self.vims_assigned[target_id]
 291             else:
 292                 worker_id = self._create_worker()
 293
 294         worker = self.workers[worker_id]
 295         worker.insert_task(("check_vim", target_id))
 296
 297     def unload_unused_vims(self):
 298         with self.write_lock:
 299             vims_to_unload = []
 300
 301             for target_id in self.vims_assigned:
 302                 if not self.db.get_one(
 303                     "ro_tasks",
 304                     q_filter={
 305                         "target_id": target_id,
 306                         "tasks.status": ["SCHEDULED", "BUILD", "DONE", "FAILED"],
 307                     },
 308                     fail_on_empty=False,
 309                 ):
 310                     vims_to_unload.append(target_id)
 311
 312             for target_id in vims_to_unload:
 313                 self._unload_vim(target_id)
 314
 315     @staticmethod
 316     def _get_cloud_init(
 317         db: Type[DbBase],
 318         fs: Type[FsBase],
 319         location: str,
 320     ) -> str:
 321         """This method reads cloud init from a file.
 322
 323         Note: Not used as cloud init content is provided in the http body.
 324
 325         Args:
 326             db (Type[DbBase]): [description]
 327             fs (Type[FsBase]): [description]
 328             location (str): can be 'vnfr_id:file:file_name' or 'vnfr_id:vdu:vdu_idex'
 329
 330         Raises:
 331             NsException: [description]
 332             NsException: [description]
 333
 334         Returns:
 335             str: [description]
 336         """
 337         vnfd_id, _, other = location.partition(":")
 338         _type, _, name = other.partition(":")
 339         vnfd = db.get_one("vnfds", {"_id": vnfd_id})
 340
 341         if _type == "file":
 342             base_folder = vnfd["_admin"]["storage"]
 343             cloud_init_file = "{}/{}/cloud_init/{}".format(
 344                 base_folder["folder"], base_folder["pkg-dir"], name
 345             )
 346
 347             if not fs:
 348                 raise NsException(
 349                     "Cannot read file '{}'. Filesystem not loaded, change configuration at storage.driver".format(
 350                         cloud_init_file
 351                     )
 352                 )
 353
 354             with fs.file_open(cloud_init_file, "r") as ci_file:
 355                 cloud_init_content = ci_file.read()
 356         elif _type == "vdu":
 357             cloud_init_content = vnfd["vdu"][int(name)]["cloud-init"]
 358         else:
 359             raise NsException("Mismatch descriptor for cloud init: {}".format(location))
 360
 361         return cloud_init_content
 362
 363     @staticmethod
 364     def _parse_jinja2(
 365         cloud_init_content: str,
 366         params: Dict[str, Any],
 367         context: str,
 368     ) -> str:
 369         """Function that processes the cloud init to replace Jinja2 encoded parameters.
 370
 371         Args:
 372             cloud_init_content (str): [description]
 373             params (Dict[str, Any]): [description]
 374             context (str): [description]
 375
 376         Raises:
 377             NsException: [description]
 378             NsException: [description]
 379
 380         Returns:
 381             str: [description]
 382         """
 383         try:
 384             env = Environment(
 385                 undefined=StrictUndefined,
 386                 autoescape=select_autoescape(default_for_string=True, default=True),
 387             )
 388             template = env.from_string(cloud_init_content)
 389
 390             return template.render(params or {})
 391         except UndefinedError as e:
 392             raise NsException(
 393                 "Variable '{}' defined at vnfd='{}' must be provided in the instantiation parameters"
 394                 "inside the 'additionalParamsForVnf' block".format(e, context)
 395             )
 396         except (TemplateError, TemplateNotFound) as e:
 397             raise NsException(
 398                 "Error parsing Jinja2 to cloud-init content at vnfd='{}': {}".format(
 399                     context, e
 400                 )
 401             )
 402
 403     def _create_db_ro_nsrs(self, nsr_id, now):
 404         try:
 405             key = rsa.generate_private_key(
 406                 backend=crypto_default_backend(), public_exponent=65537, key_size=2048
 407             )
 408             private_key = key.private_bytes(
 409                 crypto_serialization.Encoding.PEM,
 410                 crypto_serialization.PrivateFormat.PKCS8,
 411                 crypto_serialization.NoEncryption(),
 412             )
 413             public_key = key.public_key().public_bytes(
 414                 crypto_serialization.Encoding.OpenSSH,
 415                 crypto_serialization.PublicFormat.OpenSSH,
 416             )
 417             private_key = private_key.decode("utf8")
 418             # Change first line because Paramiko needs a explicit start with 'BEGIN RSA PRIVATE KEY'
 419             i = private_key.find("\n")
 420             private_key = "-----BEGIN RSA PRIVATE KEY-----" + private_key[i:]
 421             public_key = public_key.decode("utf8")
 422         except Exception as e:
 423             raise NsException("Cannot create ssh-keys: {}".format(e))
 424
 425         schema_version = "1.1"
 426         private_key_encrypted = self.db.encrypt(
 427             private_key, schema_version=schema_version, salt=nsr_id
 428         )
 429         db_content = {
 430             "_id": nsr_id,
 431             "_admin": {
 432                 "created": now,
 433                 "modified": now,
 434                 "schema_version": schema_version,
 435             },
 436             "public_key": public_key,
 437             "private_key": private_key_encrypted,
 438             "actions": [],
 439         }
 440         self.db.create("ro_nsrs", db_content)
 441
 442         return db_content
 443
 444     @staticmethod
 445     def _create_task(
 446         deployment_info: Dict[str, Any],
 447         target_id: str,
 448         item: str,
 449         action: str,
 450         target_record: str,
 451         target_record_id: str,
 452         extra_dict: Dict[str, Any] = None,
 453     ) -> Dict[str, Any]:
 454         """Function to create task dict from deployment information.
 455
 456         Args:
 457             deployment_info (Dict[str, Any]): [description]
 458             target_id (str): [description]
 459             item (str): [description]
 460             action (str): [description]
 461             target_record (str): [description]
 462             target_record_id (str): [description]
 463             extra_dict (Dict[str, Any], optional): [description]. Defaults to None.
 464
 465         Returns:
 466             Dict[str, Any]: [description]
 467         """
 468         task = {
 469             "target_id": target_id,  # it will be removed before pushing at database
 470             "action_id": deployment_info.get("action_id"),
 471             "nsr_id": deployment_info.get("nsr_id"),
 472             "task_id": f"{deployment_info.get('action_id')}:{deployment_info.get('task_index')}",
 473             "status": "SCHEDULED",
 474             "action": action,
 475             "item": item,
 476             "target_record": target_record,
 477             "target_record_id": target_record_id,
 478         }
 479
 480         if extra_dict:
 481             task.update(extra_dict)  # params, find_params, depends_on
 482
 483         deployment_info["task_index"] = deployment_info.get("task_index", 0) + 1
 484
 485         return task
 486
 487     @staticmethod
 488     def _create_ro_task(
 489         target_id: str,
 490         task: Dict[str, Any],
 491     ) -> Dict[str, Any]:
 492         """Function to create an RO task from task information.
 493
 494         Args:
 495             target_id (str): [description]
 496             task (Dict[str, Any]): [description]
 497
 498         Returns:
 499             Dict[str, Any]: [description]
 500         """
 501         now = time()
 502
 503         _id = task.get("task_id")
 504         db_ro_task = {
 505             "_id": _id,
 506             "locked_by": None,
 507             "locked_at": 0.0,
 508             "target_id": target_id,
 509             "vim_info": {
 510                 "created": False,
 511                 "created_items": None,
 512                 "vim_id": None,
 513                 "vim_name": None,
 514                 "vim_status": None,
 515                 "vim_details": None,
 516                 "vim_message": None,
 517                 "refresh_at": None,
 518             },
 519             "modified_at": now,
 520             "created_at": now,
 521             "to_check_at": now,
 522             "tasks": [task],
 523         }
 524
 525         return db_ro_task
 526
 527     @staticmethod
 528     def _process_image_params(
 529         target_image: Dict[str, Any],
 530         indata: Dict[str, Any],
 531         vim_info: Dict[str, Any],
 532         target_record_id: str,
 533         **kwargs: Dict[str, Any],
 534     ) -> Dict[str, Any]:
 535         """Function to process VDU image parameters.
 536
 537         Args:
 538             target_image (Dict[str, Any]): [description]
 539             indata (Dict[str, Any]): [description]
 540             vim_info (Dict[str, Any]): [description]
 541             target_record_id (str): [description]
 542
 543         Returns:
 544             Dict[str, Any]: [description]
 545         """
 546         find_params = {}
 547
 548         if target_image.get("image"):
 549             find_params["filter_dict"] = {"name": target_image.get("image")}
 550
 551         if target_image.get("vim_image_id"):
 552             find_params["filter_dict"] = {"id": target_image.get("vim_image_id")}
 553
 554         if target_image.get("image_checksum"):
 555             find_params["filter_dict"] = {
 556                 "checksum": target_image.get("image_checksum")
 557             }
 558
 559         return {"find_params": find_params}
 560
 561     @staticmethod
 562     def _get_resource_allocation_params(
 563         quota_descriptor: Dict[str, Any],
 564     ) -> Dict[str, Any]:
 565         """Read the quota_descriptor from vnfd and fetch the resource allocation properties from the
 566         descriptor object.
 567
 568         Args:
 569             quota_descriptor (Dict[str, Any]): cpu/mem/vif/disk-io quota descriptor
 570
 571         Returns:
 572             Dict[str, Any]: quota params for limit, reserve, shares from the descriptor object
 573         """
 574         quota = {}
 575
 576         if quota_descriptor.get("limit"):
 577             quota["limit"] = int(quota_descriptor["limit"])
 578
 579         if quota_descriptor.get("reserve"):
 580             quota["reserve"] = int(quota_descriptor["reserve"])
 581
 582         if quota_descriptor.get("shares"):
 583             quota["shares"] = int(quota_descriptor["shares"])
 584
 585         return quota
 586
 587     @staticmethod
 588     def _process_guest_epa_quota_params(
 589         guest_epa_quota: Dict[str, Any],
 590         epa_vcpu_set: bool,
 591     ) -> Dict[str, Any]:
 592         """Function to extract the guest epa quota parameters.
 593
 594         Args:
 595             guest_epa_quota (Dict[str, Any]): [description]
 596             epa_vcpu_set (bool): [description]
 597
 598         Returns:
 599             Dict[str, Any]: [description]
 600         """
 601         result = {}
 602
 603         if guest_epa_quota.get("cpu-quota") and not epa_vcpu_set:
 604             cpuquota = Ns._get_resource_allocation_params(
 605                 guest_epa_quota.get("cpu-quota")
 606             )
 607
 608             if cpuquota:
 609                 result["cpu-quota"] = cpuquota
 610
 611         if guest_epa_quota.get("mem-quota"):
 612             vduquota = Ns._get_resource_allocation_params(
 613                 guest_epa_quota.get("mem-quota")
 614             )
 615
 616             if vduquota:
 617                 result["mem-quota"] = vduquota
 618
 619         if guest_epa_quota.get("disk-io-quota"):
 620             diskioquota = Ns._get_resource_allocation_params(
 621                 guest_epa_quota.get("disk-io-quota")
 622             )
 623
 624             if diskioquota:
 625                 result["disk-io-quota"] = diskioquota
 626
 627         if guest_epa_quota.get("vif-quota"):
 628             vifquota = Ns._get_resource_allocation_params(
 629                 guest_epa_quota.get("vif-quota")
 630             )
 631
 632             if vifquota:
 633                 result["vif-quota"] = vifquota
 634
 635         return result
 636
 637     @staticmethod
 638     def _process_guest_epa_numa_params(
 639         guest_epa_quota: Dict[str, Any],
 640     ) -> Tuple[Dict[str, Any], bool]:
 641         """[summary]
 642
 643         Args:
 644             guest_epa_quota (Dict[str, Any]): [description]
 645
 646         Returns:
 647             Tuple[Dict[str, Any], bool]: [description]
 648         """
 649         numa = {}
 650         numa_list = []
 651         epa_vcpu_set = False
 652
 653         if guest_epa_quota.get("numa-node-policy"):
 654             numa_node_policy = guest_epa_quota.get("numa-node-policy")
 655
 656             if numa_node_policy.get("node"):
 657                 for numa_node in numa_node_policy["node"]:
 658                     vcpu_list = []
 659                     if numa_node.get("id"):
 660                         numa["id"] = int(numa_node["id"])
 661
 662                     if numa_node.get("vcpu"):
 663                         for vcpu in numa_node.get("vcpu"):
 664                             vcpu_id = int(vcpu.get("id"))
 665                             vcpu_list.append(vcpu_id)
 666                         numa["vcpu"] = vcpu_list
 667
 668                     if numa_node.get("num-cores"):
 669                         numa["cores"] = numa_node["num-cores"]
 670                         epa_vcpu_set = True
 671
 672                     paired_threads = numa_node.get("paired-threads", {})
 673                     if paired_threads.get("num-paired-threads"):
 674                         numa["paired_threads"] = int(
 675                             numa_node["paired-threads"]["num-paired-threads"]
 676                         )
 677                         epa_vcpu_set = True
 678
 679                     if paired_threads.get("paired-thread-ids"):
 680                         numa["paired-threads-id"] = []
 681
 682                         for pair in paired_threads["paired-thread-ids"]:
 683                             numa["paired-threads-id"].append(
 684                                 (
 685                                     str(pair["thread-a"]),
 686                                     str(pair["thread-b"]),
 687                                 )
 688                             )
 689
 690                     if numa_node.get("num-threads"):
 691                         numa["threads"] = int(numa_node["num-threads"])
 692                         epa_vcpu_set = True
 693
 694                     if numa_node.get("memory-mb"):
 695                         numa["memory"] = max(int(int(numa_node["memory-mb"]) / 1024), 1)
 696
 697                     numa_list.append(numa)
 698                     numa = {}
 699
 700         return numa_list, epa_vcpu_set
 701
 702     @staticmethod
 703     def _process_guest_epa_cpu_pinning_params(
 704         guest_epa_quota: Dict[str, Any],
 705         vcpu_count: int,
 706         epa_vcpu_set: bool,
 707     ) -> Tuple[Dict[str, Any], bool]:
 708         """[summary]
 709
 710         Args:
 711             guest_epa_quota (Dict[str, Any]): [description]
 712             vcpu_count (int): [description]
 713             epa_vcpu_set (bool): [description]
 714
 715         Returns:
 716             Tuple[Dict[str, Any], bool]: [description]
 717         """
 718         numa = {}
 719         local_epa_vcpu_set = epa_vcpu_set
 720
 721         if (
 722             guest_epa_quota.get("cpu-pinning-policy") == "DEDICATED"
 723             and not epa_vcpu_set
 724         ):
 725             numa[
 726                 "cores"
 727                 if guest_epa_quota.get("cpu-thread-pinning-policy") != "PREFER"
 728                 else "threads"
 729             ] = max(vcpu_count, 1)
 730             local_epa_vcpu_set = True
 731
 732         return numa, local_epa_vcpu_set
 733
 734     @staticmethod
 735     def _process_epa_params(
 736         target_flavor: Dict[str, Any],
 737     ) -> Dict[str, Any]:
 738         """[summary]
 739
 740         Args:
 741             target_flavor (Dict[str, Any]): [description]
 742
 743         Returns:
 744             Dict[str, Any]: [description]
 745         """
 746         extended = {}
 747         numa = {}
 748         numa_list = []
 749
 750         if target_flavor.get("guest-epa"):
 751             guest_epa = target_flavor["guest-epa"]
 752
 753             numa_list, epa_vcpu_set = Ns._process_guest_epa_numa_params(
 754                 guest_epa_quota=guest_epa
 755             )
 756
 757             if guest_epa.get("mempage-size"):
 758                 extended["mempage-size"] = guest_epa.get("mempage-size")
 759
 760             if guest_epa.get("cpu-pinning-policy"):
 761                 extended["cpu-pinning-policy"] = guest_epa.get("cpu-pinning-policy")
 762
 763             if guest_epa.get("cpu-thread-pinning-policy"):
 764                 extended["cpu-thread-pinning-policy"] = guest_epa.get(
 765                     "cpu-thread-pinning-policy"
 766                 )
 767
 768             if guest_epa.get("numa-node-policy"):
 769                 if guest_epa.get("numa-node-policy").get("mem-policy"):
 770                     extended["mem-policy"] = guest_epa.get("numa-node-policy").get(
 771                         "mem-policy"
 772                     )
 773
 774             tmp_numa, epa_vcpu_set = Ns._process_guest_epa_cpu_pinning_params(
 775                 guest_epa_quota=guest_epa,
 776                 vcpu_count=int(target_flavor.get("vcpu-count", 1)),
 777                 epa_vcpu_set=epa_vcpu_set,
 778             )
 779             for numa in numa_list:
 780                 numa.update(tmp_numa)
 781
 782             extended.update(
 783                 Ns._process_guest_epa_quota_params(
 784                     guest_epa_quota=guest_epa,
 785                     epa_vcpu_set=epa_vcpu_set,
 786                 )
 787             )
 788
 789         if numa:
 790             extended["numas"] = numa_list
 791
 792         return extended
 793
 794     @staticmethod
 795     def _process_flavor_params(
 796         target_flavor: Dict[str, Any],
 797         indata: Dict[str, Any],
 798         vim_info: Dict[str, Any],
 799         target_record_id: str,
 800         **kwargs: Dict[str, Any],
 801     ) -> Dict[str, Any]:
 802         """[summary]
 803
 804         Args:
 805             target_flavor (Dict[str, Any]): [description]
 806             indata (Dict[str, Any]): [description]
 807             vim_info (Dict[str, Any]): [description]
 808             target_record_id (str): [description]
 809
 810         Returns:
 811             Dict[str, Any]: [description]
 812         """
 813         db = kwargs.get("db")
 814         target_vdur = {}
 815
 816         flavor_data = {
 817             "disk": int(target_flavor["storage-gb"]),
 818             "ram": int(target_flavor["memory-mb"]),
 819             "vcpus": int(target_flavor["vcpu-count"]),
 820         }
 821
 822         for vnf in indata.get("vnf", []):
 823             for vdur in vnf.get("vdur", []):
 824                 if vdur.get("ns-flavor-id") == target_flavor.get("id"):
 825                     target_vdur = vdur
 826
 827         if db and isinstance(indata.get("vnf"), list):
 828             vnfd_id = indata.get("vnf")[0].get("vnfd-id")
 829             vnfd = db.get_one("vnfds", {"_id": vnfd_id})
 830             # check if there is persistent root disk
 831             for vdu in vnfd.get("vdu", ()):
 832                 if vdu["name"] == target_vdur.get("vdu-name"):
 833                     for vsd in vnfd.get("virtual-storage-desc", ()):
 834                         if vsd.get("id") == vdu.get("virtual-storage-desc", [[]])[0]:
 835                             root_disk = vsd
 836                             if (
 837                                 root_disk.get("type-of-storage")
 838                                 == "persistent-storage:persistent-storage"
 839                             ):
 840                                 flavor_data["disk"] = 0
 841
 842         for storage in target_vdur.get("virtual-storages", []):
 843             if (
 844                 storage.get("type-of-storage")
 845                 == "etsi-nfv-descriptors:ephemeral-storage"
 846             ):
 847                 flavor_data["ephemeral"] = int(storage.get("size-of-storage", 0))
 848             elif storage.get("type-of-storage") == "etsi-nfv-descriptors:swap-storage":
 849                 flavor_data["swap"] = int(storage.get("size-of-storage", 0))
 850
 851         extended = Ns._process_epa_params(target_flavor)
 852         if extended:
 853             flavor_data["extended"] = extended
 854
 855         extra_dict = {"find_params": {"flavor_data": flavor_data}}
 856         flavor_data_name = flavor_data.copy()
 857         flavor_data_name["name"] = target_flavor["name"]
 858         extra_dict["params"] = {"flavor_data": flavor_data_name}
 859
 860         return extra_dict
 861
 862     @staticmethod
 863     def _ip_profile_to_ro(
 864         ip_profile: Dict[str, Any],
 865     ) -> Dict[str, Any]:
 866         """[summary]
 867
 868         Args:
 869             ip_profile (Dict[str, Any]): [description]
 870
 871         Returns:
 872             Dict[str, Any]: [description]
 873         """
 874         if not ip_profile:
 875             return None
 876
 877         ro_ip_profile = {
 878             "ip_version": "IPv4"
 879             if "v4" in ip_profile.get("ip-version", "ipv4")
 880             else "IPv6",
 881             "subnet_address": ip_profile.get("subnet-address"),
 882             "gateway_address": ip_profile.get("gateway-address"),
 883             "dhcp_enabled": ip_profile.get("dhcp-params", {}).get("enabled", False),
 884             "dhcp_start_address": ip_profile.get("dhcp-params", {}).get(
 885                 "start-address", None
 886             ),
 887             "dhcp_count": ip_profile.get("dhcp-params", {}).get("count", None),
 888         }
 889
 890         if ip_profile.get("dns-server"):
 891             ro_ip_profile["dns_address"] = ";".join(
 892                 [v["address"] for v in ip_profile["dns-server"] if v.get("address")]
 893             )
 894
 895         if ip_profile.get("security-group"):
 896             ro_ip_profile["security_group"] = ip_profile["security-group"]
 897
 898         return ro_ip_profile
 899
 900     @staticmethod
 901     def _process_net_params(
 902         target_vld: Dict[str, Any],
 903         indata: Dict[str, Any],
 904         vim_info: Dict[str, Any],
 905         target_record_id: str,
 906         **kwargs: Dict[str, Any],
 907     ) -> Dict[str, Any]:
 908         """Function to process network parameters.
 909
 910         Args:
 911             target_vld (Dict[str, Any]): [description]
 912             indata (Dict[str, Any]): [description]
 913             vim_info (Dict[str, Any]): [description]
 914             target_record_id (str): [description]
 915
 916         Returns:
 917             Dict[str, Any]: [description]
 918         """
 919         extra_dict = {}
 920
 921         if vim_info.get("sdn"):
 922             # vnf_preffix = "vnfrs:{}".format(vnfr_id)
 923             # ns_preffix = "nsrs:{}".format(nsr_id)
 924             # remove the ending ".sdn
 925             vld_target_record_id, _, _ = target_record_id.rpartition(".")
 926             extra_dict["params"] = {
 927                 k: vim_info[k]
 928                 for k in ("sdn-ports", "target_vim", "vlds", "type")
 929                 if vim_info.get(k)
 930             }
 931
 932             # TODO needed to add target_id in the dependency.
 933             if vim_info.get("target_vim"):
 934                 extra_dict["depends_on"] = [
 935                     f"{vim_info.get('target_vim')} {vld_target_record_id}"
 936                 ]
 937
 938             return extra_dict
 939
 940         if vim_info.get("vim_network_name"):
 941             extra_dict["find_params"] = {
 942                 "filter_dict": {
 943                     "name": vim_info.get("vim_network_name"),
 944                 },
 945             }
 946         elif vim_info.get("vim_network_id"):
 947             extra_dict["find_params"] = {
 948                 "filter_dict": {
 949                     "id": vim_info.get("vim_network_id"),
 950                 },
 951             }
 952         elif target_vld.get("mgmt-network"):
 953             extra_dict["find_params"] = {
 954                 "mgmt": True,
 955                 "name": target_vld["id"],
 956             }
 957         else:
 958             # create
 959             extra_dict["params"] = {
 960                 "net_name": (
 961                     f"{indata.get('name')[:16]}-{target_vld.get('name', target_vld.get('id'))[:16]}"
 962                 ),
 963                 "ip_profile": Ns._ip_profile_to_ro(vim_info.get("ip_profile")),
 964                 "provider_network_profile": vim_info.get("provider_network"),
 965             }
 966
 967             if not target_vld.get("underlay"):
 968                 extra_dict["params"]["net_type"] = "bridge"
 969             else:
 970                 extra_dict["params"]["net_type"] = (
 971                     "ptp" if target_vld.get("type") == "ELINE" else "data"
 972                 )
 973
 974         return extra_dict
 975
 976     @staticmethod
 977     def find_persistent_root_volumes(
 978         vnfd: dict,
 979         target_vdu: dict,
 980         vdu_instantiation_volumes_list: list,
 981         disk_list: list,
 982     ) -> Dict[str, any]:
 983         """Find the persistent root volumes and add them to the disk_list
 984         by parsing the instantiation parameters.
 985
 986         Args:
 987             vnfd    (dict):                                 VNF descriptor
 988             target_vdu      (dict):                         processed VDU
 989             vdu_instantiation_volumes_list  (list):         instantiation parameters for the each VDU as a list
 990             disk_list   (list):                             to be filled up
 991
 992         Returns:
 993             persistent_root_disk    (dict):                 Details of persistent root disk
 994
 995         """
 996         persistent_root_disk = {}
 997         # There can be only one root disk, when we find it, it will return the result
 998
 999         for vdu, vsd in product(
1000             vnfd.get("vdu", ()), vnfd.get("virtual-storage-desc", ())
1001         ):
1002             if (
1003                 vdu["name"] == target_vdu["vdu-name"]
1004                 and vsd.get("id") == vdu.get("virtual-storage-desc", [[]])[0]
1005             ):
1006                 root_disk = vsd
1007                 if (
1008                     root_disk.get("type-of-storage")
1009                     == "persistent-storage:persistent-storage"
1010                 ):
1011                     for vdu_volume in vdu_instantiation_volumes_list:
1012
1013                         if (
1014                             vdu_volume["vim-volume-id"]
1015                             and root_disk["id"] == vdu_volume["name"]
1016                         ):
1017
1018                             persistent_root_disk[vsd["id"]] = {
1019                                 "vim_volume_id": vdu_volume["vim-volume-id"],
1020                                 "image_id": vdu.get("sw-image-desc"),
1021                             }
1022
1023                             disk_list.append(persistent_root_disk[vsd["id"]])
1024
1025                             return persistent_root_disk
1026
1027                     else:
1028
1029                         if root_disk.get("size-of-storage"):
1030                             persistent_root_disk[vsd["id"]] = {
1031                                 "image_id": vdu.get("sw-image-desc"),
1032                                 "size": root_disk.get("size-of-storage"),
1033                             }
1034
1035                             disk_list.append(persistent_root_disk[vsd["id"]])
1036
1037                             return persistent_root_disk
1038
1039     @staticmethod
1040     def find_persistent_volumes(
1041         persistent_root_disk: dict,
1042         target_vdu: dict,
1043         vdu_instantiation_volumes_list: list,
1044         disk_list: list,
1045     ) -> None:
1046         """Find the ordinary persistent volumes and add them to the disk_list
1047         by parsing the instantiation parameters.
1048
1049         Args:
1050             persistent_root_disk:   persistent root disk dictionary
1051             target_vdu: processed VDU
1052             vdu_instantiation_volumes_list: instantiation parameters for the each VDU as a list
1053             disk_list:  to be filled up
1054
1055         """
1056         # Find the ordinary volumes which are not added to the persistent_root_disk
1057         persistent_disk = {}
1058         for disk in target_vdu.get("virtual-storages", {}):
1059             if (
1060                 disk.get("type-of-storage") == "persistent-storage:persistent-storage"
1061                 and disk["id"] not in persistent_root_disk.keys()
1062             ):
1063                 for vdu_volume in vdu_instantiation_volumes_list:
1064
1065                     if vdu_volume["vim-volume-id"] and disk["id"] == vdu_volume["name"]:
1066
1067                         persistent_disk[disk["id"]] = {
1068                             "vim_volume_id": vdu_volume["vim-volume-id"],
1069                         }
1070                         disk_list.append(persistent_disk[disk["id"]])
1071
1072                 else:
1073                     if disk["id"] not in persistent_disk.keys():
1074                         persistent_disk[disk["id"]] = {
1075                             "size": disk.get("size-of-storage"),
1076                         }
1077                         disk_list.append(persistent_disk[disk["id"]])
1078
1079     @staticmethod
1080     def _sort_vdu_interfaces(target_vdu: dict) -> None:
1081         """Sort the interfaces according to position number.
1082
1083         Args:
1084             target_vdu  (dict):     Details of VDU to be created
1085
1086         """
1087         # If the position info is provided for all the interfaces, it will be sorted
1088         # according to position number ascendingly.
1089         sorted_interfaces = sorted(
1090             target_vdu["interfaces"],
1091             key=lambda x: (x.get("position") is None, x.get("position")),
1092         )
1093         target_vdu["interfaces"] = sorted_interfaces
1094
1095     @staticmethod
1096     def _partially_locate_vdu_interfaces(target_vdu: dict) -> None:
1097         """Only place the interfaces which has specific position.
1098
1099         Args:
1100             target_vdu  (dict):     Details of VDU to be created
1101
1102         """
1103         # If the position info is provided for some interfaces but not all of them, the interfaces
1104         # which has specific position numbers will be placed and others' positions will not be taken care.
1105         if any(
1106             i.get("position") + 1
1107             for i in target_vdu["interfaces"]
1108             if i.get("position") is not None
1109         ):
1110             n = len(target_vdu["interfaces"])
1111             sorted_interfaces = [-1] * n
1112             k, m = 0, 0
1113
1114             while k < n:
1115                 if target_vdu["interfaces"][k].get("position") is not None:
1116                     if any(i.get("position") == 0 for i in target_vdu["interfaces"]):
1117                         idx = target_vdu["interfaces"][k]["position"] + 1
1118                     else:
1119                         idx = target_vdu["interfaces"][k]["position"]
1120                     sorted_interfaces[idx - 1] = target_vdu["interfaces"][k]
1121                 k += 1
1122
1123             while m < n:
1124                 if target_vdu["interfaces"][m].get("position") is None:
1125                     idy = sorted_interfaces.index(-1)
1126                     sorted_interfaces[idy] = target_vdu["interfaces"][m]
1127                 m += 1
1128
1129             target_vdu["interfaces"] = sorted_interfaces
1130
1131     @staticmethod
1132     def _prepare_vdu_cloud_init(
1133         target_vdu: dict, vdu2cloud_init: dict, db: object, fs: object
1134     ) -> Dict:
1135         """Fill cloud_config dict with cloud init details.
1136
1137         Args:
1138             target_vdu  (dict):         Details of VDU to be created
1139             vdu2cloud_init  (dict):     Cloud init dict
1140             db  (object):               DB object
1141             fs  (object):               FS object
1142
1143         Returns:
1144             cloud_config (dict):        Cloud config details of VDU
1145
1146         """
1147         # cloud config
1148         cloud_config = {}
1149
1150         if target_vdu.get("cloud-init"):
1151             if target_vdu["cloud-init"] not in vdu2cloud_init:
1152                 vdu2cloud_init[target_vdu["cloud-init"]] = Ns._get_cloud_init(
1153                     db=db,
1154                     fs=fs,
1155                     location=target_vdu["cloud-init"],
1156                 )
1157
1158             cloud_content_ = vdu2cloud_init[target_vdu["cloud-init"]]
1159             cloud_config["user-data"] = Ns._parse_jinja2(
1160                 cloud_init_content=cloud_content_,
1161                 params=target_vdu.get("additionalParams"),
1162                 context=target_vdu["cloud-init"],
1163             )
1164
1165         if target_vdu.get("boot-data-drive"):
1166             cloud_config["boot-data-drive"] = target_vdu.get("boot-data-drive")
1167
1168         return cloud_config
1169
1170     @staticmethod
1171     def _check_vld_information_of_interfaces(
1172         interface: dict, ns_preffix: str, vnf_preffix: str
1173     ) -> Optional[str]:
1174         """Prepare the net_text by the virtual link information for vnf and ns level.
1175         Args:
1176             interface   (dict):         Interface details
1177             ns_preffix  (str):          Prefix of NS
1178             vnf_preffix (str):          Prefix of VNF
1179
1180         Returns:
1181             net_text    (str):          information of net
1182
1183         """
1184         net_text = ""
1185         if interface.get("ns-vld-id"):
1186             net_text = ns_preffix + ":vld." + interface["ns-vld-id"]
1187         elif interface.get("vnf-vld-id"):
1188             net_text = vnf_preffix + ":vld." + interface["vnf-vld-id"]
1189
1190         return net_text
1191
1192     @staticmethod
1193     def _prepare_interface_port_security(interface: dict) -> None:
1194         """
1195
1196         Args:
1197             interface   (dict):     Interface details
1198
1199         """
1200         if "port-security-enabled" in interface:
1201             interface["port_security"] = interface.pop("port-security-enabled")
1202
1203         if "port-security-disable-strategy" in interface:
1204             interface["port_security_disable_strategy"] = interface.pop(
1205                 "port-security-disable-strategy"
1206             )
1207
1208     @staticmethod
1209     def _create_net_item_of_interface(interface: dict, net_text: str) -> dict:
1210         """Prepare net item including name, port security, floating ip etc.
1211
1212         Args:
1213             interface   (dict):         Interface details
1214             net_text    (str):          information of net
1215
1216         Returns:
1217             net_item    (dict):         Dict including net details
1218
1219         """
1220
1221         net_item = {
1222             x: v
1223             for x, v in interface.items()
1224             if x
1225             in (
1226                 "name",
1227                 "vpci",
1228                 "port_security",
1229                 "port_security_disable_strategy",
1230                 "floating_ip",
1231             )
1232         }
1233         net_item["net_id"] = "TASK-" + net_text
1234         net_item["type"] = "virtual"
1235
1236         return net_item
1237
1238     @staticmethod
1239     def _prepare_type_of_interface(
1240         interface: dict, tasks_by_target_record_id: dict, net_text: str, net_item: dict
1241     ) -> None:
1242         """Fill the net item type by interface type such as SR-IOV, OM-MGMT, bridge etc.
1243
1244         Args:
1245             interface   (dict):                     Interface details
1246             tasks_by_target_record_id   (dict):     Task details
1247             net_text    (str):                      information of net
1248             net_item    (dict):                     Dict including net details
1249
1250         """
1251         # TODO mac_address: used for  SR-IOV ifaces #TODO for other types
1252         # TODO floating_ip: True/False (or it can be None)
1253
1254         if interface.get("type") in ("SR-IOV", "PCI-PASSTHROUGH"):
1255             # Mark the net create task as type data
1256             if deep_get(
1257                 tasks_by_target_record_id,
1258                 net_text,
1259                 "extra_dict",
1260                 "params",
1261                 "net_type",
1262             ):
1263                 tasks_by_target_record_id[net_text]["extra_dict"]["params"][
1264                     "net_type"
1265                 ] = "data"
1266
1267             net_item["use"] = "data"
1268             net_item["model"] = interface["type"]
1269             net_item["type"] = interface["type"]
1270
1271         elif (
1272             interface.get("type") == "OM-MGMT"
1273             or interface.get("mgmt-interface")
1274             or interface.get("mgmt-vnf")
1275         ):
1276             net_item["use"] = "mgmt"
1277
1278         else:
1279             # If interface.get("type") in ("VIRTIO", "E1000", "PARAVIRT"):
1280             net_item["use"] = "bridge"
1281             net_item["model"] = interface.get("type")
1282
1283     @staticmethod
1284     def _prepare_vdu_interfaces(
1285         target_vdu: dict,
1286         extra_dict: dict,
1287         ns_preffix: str,
1288         vnf_preffix: str,
1289         logger: object,
1290         tasks_by_target_record_id: dict,
1291         net_list: list,
1292     ) -> None:
1293         """Prepare the net_item and add net_list, add mgmt interface to extra_dict.
1294
1295         Args:
1296             target_vdu  (dict):                             VDU to be created
1297             extra_dict  (dict):                             Dictionary to be filled
1298             ns_preffix  (str):                              NS prefix as string
1299             vnf_preffix (str):                              VNF prefix as string
1300             logger  (object):                               Logger Object
1301             tasks_by_target_record_id  (dict):              Task details
1302             net_list    (list):                             Net list of VDU
1303         """
1304         for iface_index, interface in enumerate(target_vdu["interfaces"]):
1305
1306             net_text = Ns._check_vld_information_of_interfaces(
1307                 interface, ns_preffix, vnf_preffix
1308             )
1309             if not net_text:
1310                 # Interface not connected to any vld
1311                 logger.error(
1312                     "Interface {} from vdu {} not connected to any vld".format(
1313                         iface_index, target_vdu["vdu-name"]
1314                     )
1315                 )
1316                 continue
1317
1318             extra_dict["depends_on"].append(net_text)
1319
1320             Ns._prepare_interface_port_security(interface)
1321
1322             net_item = Ns._create_net_item_of_interface(interface, net_text)
1323
1324             Ns._prepare_type_of_interface(
1325                 interface, tasks_by_target_record_id, net_text, net_item
1326             )
1327
1328             if interface.get("ip-address"):
1329                 net_item["ip_address"] = interface["ip-address"]
1330
1331             if interface.get("mac-address"):
1332                 net_item["mac_address"] = interface["mac-address"]
1333
1334             net_list.append(net_item)
1335
1336             if interface.get("mgmt-vnf"):
1337                 extra_dict["mgmt_vnf_interface"] = iface_index
1338             elif interface.get("mgmt-interface"):
1339                 extra_dict["mgmt_vdu_interface"] = iface_index
1340
1341     @staticmethod
1342     def _prepare_vdu_ssh_keys(
1343         target_vdu: dict, ro_nsr_public_key: dict, cloud_config: dict
1344     ) -> None:
1345         """Add ssh keys to cloud config.
1346
1347         Args:
1348            target_vdu  (dict):                 Details of VDU to be created
1349            ro_nsr_public_key   (dict):          RO NSR public Key
1350            cloud_config  (dict):               Cloud config details
1351
1352         """
1353         ssh_keys = []
1354
1355         if target_vdu.get("ssh-keys"):
1356             ssh_keys += target_vdu.get("ssh-keys")
1357
1358         if target_vdu.get("ssh-access-required"):
1359             ssh_keys.append(ro_nsr_public_key)
1360
1361         if ssh_keys:
1362             cloud_config["key-pairs"] = ssh_keys
1363
1364     @staticmethod
1365     def _select_persistent_root_disk(vsd: dict, vdu: dict) -> dict:
1366         """Selects the persistent root disk if exists.
1367         Args:
1368             vsd (dict):             Virtual storage descriptors in VNFD
1369             vdu (dict):             VNF descriptor
1370
1371         Returns:
1372             root_disk   (dict):     Selected persistent root disk
1373         """
1374         if vsd.get("id") == vdu.get("virtual-storage-desc", [[]])[0]:
1375             root_disk = vsd
1376             if root_disk.get(
1377                 "type-of-storage"
1378             ) == "persistent-storage:persistent-storage" and root_disk.get(
1379                 "size-of-storage"
1380             ):
1381                 return root_disk
1382
1383     @staticmethod
1384     def _add_persistent_root_disk_to_disk_list(
1385         vnfd: dict, target_vdu: dict, persistent_root_disk: dict, disk_list: list
1386     ) -> None:
1387         """Find the persistent root disk and add to disk list.
1388
1389         Args:
1390             vnfd  (dict):                           VNF descriptor
1391             target_vdu  (dict):                     Details of VDU to be created
1392             persistent_root_disk    (dict):         Details of persistent root disk
1393             disk_list   (list):                     Disks of VDU
1394
1395         """
1396         for vdu in vnfd.get("vdu", ()):
1397             if vdu["name"] == target_vdu["vdu-name"]:
1398                 for vsd in vnfd.get("virtual-storage-desc", ()):
1399                     root_disk = Ns._select_persistent_root_disk(vsd, vdu)
1400
1401                     if not root_disk:
1402                         continue
1403
1404                     persistent_root_disk[vsd["id"]] = {
1405                         "image_id": vdu.get("sw-image-desc"),
1406                         "size": root_disk["size-of-storage"],
1407                     }
1408
1409                     disk_list.append(persistent_root_disk[vsd["id"]])
1410                     break
1411
1412     @staticmethod
1413     def _add_persistent_ordinary_disks_to_disk_list(
1414         target_vdu: dict,
1415         persistent_root_disk: dict,
1416         persistent_ordinary_disk: dict,
1417         disk_list: list,
1418     ) -> None:
1419         """Fill the disk list by adding persistent ordinary disks.
1420
1421         Args:
1422             target_vdu  (dict):                     Details of VDU to be created
1423             persistent_root_disk    (dict):         Details of persistent root disk
1424             persistent_ordinary_disk    (dict):     Details of persistent ordinary disk
1425             disk_list   (list):                     Disks of VDU
1426
1427         """
1428         if target_vdu.get("virtual-storages"):
1429             for disk in target_vdu["virtual-storages"]:
1430                 if (
1431                     disk.get("type-of-storage")
1432                     == "persistent-storage:persistent-storage"
1433                     and disk["id"] not in persistent_root_disk.keys()
1434                 ):
1435                     persistent_ordinary_disk[disk["id"]] = {
1436                         "size": disk["size-of-storage"],
1437                     }
1438                     disk_list.append(persistent_ordinary_disk[disk["id"]])
1439
1440     @staticmethod
1441     def _prepare_vdu_affinity_group_list(
1442         target_vdu: dict, extra_dict: dict, ns_preffix: str
1443     ) -> List[Dict[str, any]]:
1444         """Process affinity group details to prepare affinity group list.
1445
1446         Args:
1447             target_vdu  (dict):     Details of VDU to be created
1448             extra_dict  (dict):     Dictionary to be filled
1449             ns_preffix  (str):      Prefix as string
1450
1451         Returns:
1452
1453             affinity_group_list (list):     Affinity group details
1454
1455         """
1456         affinity_group_list = []
1457
1458         if target_vdu.get("affinity-or-anti-affinity-group-id"):
1459             for affinity_group_id in target_vdu["affinity-or-anti-affinity-group-id"]:
1460                 affinity_group = {}
1461                 affinity_group_text = (
1462                     ns_preffix + ":affinity-or-anti-affinity-group." + affinity_group_id
1463                 )
1464
1465                 if not isinstance(extra_dict.get("depends_on"), list):
1466                     raise NsException("Invalid extra_dict format.")
1467
1468                 extra_dict["depends_on"].append(affinity_group_text)
1469                 affinity_group["affinity_group_id"] = "TASK-" + affinity_group_text
1470                 affinity_group_list.append(affinity_group)
1471
1472         return affinity_group_list
1473
1474     @staticmethod
1475     def _process_vdu_params(
1476         target_vdu: Dict[str, Any],
1477         indata: Dict[str, Any],
1478         vim_info: Dict[str, Any],
1479         target_record_id: str,
1480         **kwargs: Dict[str, Any],
1481     ) -> Dict[str, Any]:
1482         """Function to process VDU parameters.
1483
1484         Args:
1485             target_vdu (Dict[str, Any]): [description]
1486             indata (Dict[str, Any]): [description]
1487             vim_info (Dict[str, Any]): [description]
1488             target_record_id (str): [description]
1489
1490         Returns:
1491             Dict[str, Any]: [description]
1492         """
1493         vnfr_id = kwargs.get("vnfr_id")
1494         nsr_id = kwargs.get("nsr_id")
1495         vnfr = kwargs.get("vnfr")
1496         vdu2cloud_init = kwargs.get("vdu2cloud_init")
1497         tasks_by_target_record_id = kwargs.get("tasks_by_target_record_id")
1498         logger = kwargs.get("logger")
1499         db = kwargs.get("db")
1500         fs = kwargs.get("fs")
1501         ro_nsr_public_key = kwargs.get("ro_nsr_public_key")
1502
1503         vnf_preffix = "vnfrs:{}".format(vnfr_id)
1504         ns_preffix = "nsrs:{}".format(nsr_id)
1505         image_text = ns_preffix + ":image." + target_vdu["ns-image-id"]
1506         flavor_text = ns_preffix + ":flavor." + target_vdu["ns-flavor-id"]
1507         extra_dict = {"depends_on": [image_text, flavor_text]}
1508         net_list = []
1509
1510         persistent_root_disk = {}
1511         persistent_ordinary_disk = {}
1512         vdu_instantiation_volumes_list = []
1513         disk_list = []
1514         vnfd_id = vnfr["vnfd-id"]
1515         vnfd = db.get_one("vnfds", {"_id": vnfd_id})
1516
1517         # If the position info is provided for all the interfaces, it will be sorted
1518         # according to position number ascendingly.
1519         if all(
1520             True if i.get("position") is not None else False
1521             for i in target_vdu["interfaces"]
1522         ):
1523
1524             Ns._sort_vdu_interfaces(target_vdu)
1525
1526         # If the position info is provided for some interfaces but not all of them, the interfaces
1527         # which has specific position numbers will be placed and others' positions will not be taken care.
1528         else:
1529
1530             Ns._partially_locate_vdu_interfaces(target_vdu)
1531
1532         # If the position info is not provided for the interfaces, interfaces will be attached
1533         # according to the order in the VNFD.
1534         Ns._prepare_vdu_interfaces(
1535             target_vdu,
1536             extra_dict,
1537             ns_preffix,
1538             vnf_preffix,
1539             logger,
1540             tasks_by_target_record_id,
1541             net_list,
1542         )
1543
1544         # cloud config
1545         cloud_config = Ns._prepare_vdu_cloud_init(target_vdu, vdu2cloud_init, db, fs)
1546
1547         # Prepare VDU ssh keys
1548         Ns._prepare_vdu_ssh_keys(target_vdu, ro_nsr_public_key, cloud_config)
1549
1550         if target_vdu.get("additionalParams"):
1551             vdu_instantiation_volumes_list = (
1552                 target_vdu.get("additionalParams").get("OSM").get("vdu_volumes")
1553             )
1554
1555         if vdu_instantiation_volumes_list:
1556
1557             # Find the root volumes and add to the disk_list
1558             persistent_root_disk = Ns.find_persistent_root_volumes(
1559                 vnfd, target_vdu, vdu_instantiation_volumes_list, disk_list
1560             )
1561
1562             # Find the ordinary volumes which are not added to the persistent_root_disk
1563             # and put them to the disk list
1564             Ns.find_persistent_volumes(
1565                 persistent_root_disk,
1566                 target_vdu,
1567                 vdu_instantiation_volumes_list,
1568                 disk_list,
1569             )
1570
1571         else:
1572             # Vdu_instantiation_volumes_list is empty
1573             # First get add the persistent root disks to disk_list
1574             Ns._add_persistent_root_disk_to_disk_list(
1575                 vnfd, target_vdu, persistent_root_disk, disk_list
1576             )
1577             # Add the persistent non-root disks to disk_list
1578             Ns._add_persistent_ordinary_disks_to_disk_list(
1579                 target_vdu, persistent_root_disk, persistent_ordinary_disk, disk_list
1580             )
1581
1582         affinity_group_list = Ns._prepare_vdu_affinity_group_list(
1583             target_vdu, extra_dict, ns_preffix
1584         )
1585
1586         extra_dict["params"] = {
1587             "name": "{}-{}-{}-{}".format(
1588                 indata["name"][:16],
1589                 vnfr["member-vnf-index-ref"][:16],
1590                 target_vdu["vdu-name"][:32],
1591                 target_vdu.get("count-index") or 0,
1592             ),
1593             "description": target_vdu["vdu-name"],
1594             "start": True,
1595             "image_id": "TASK-" + image_text,
1596             "flavor_id": "TASK-" + flavor_text,
1597             "affinity_group_list": affinity_group_list,
1598             "net_list": net_list,
1599             "cloud_config": cloud_config or None,
1600             "disk_list": disk_list,
1601             "availability_zone_index": None,  # TODO
1602             "availability_zone_list": None,  # TODO
1603         }
1604
1605         return extra_dict
1606
1607     @staticmethod
1608     def _process_affinity_group_params(
1609         target_affinity_group: Dict[str, Any],
1610         indata: Dict[str, Any],
1611         vim_info: Dict[str, Any],
1612         target_record_id: str,
1613         **kwargs: Dict[str, Any],
1614     ) -> Dict[str, Any]:
1615         """Get affinity or anti-affinity group parameters.
1616
1617         Args:
1618             target_affinity_group (Dict[str, Any]): [description]
1619             indata (Dict[str, Any]): [description]
1620             vim_info (Dict[str, Any]): [description]
1621             target_record_id (str): [description]
1622
1623         Returns:
1624             Dict[str, Any]: [description]
1625         """
1626
1627         extra_dict = {}
1628         affinity_group_data = {
1629             "name": target_affinity_group["name"],
1630             "type": target_affinity_group["type"],
1631             "scope": target_affinity_group["scope"],
1632         }
1633
1634         if target_affinity_group.get("vim-affinity-group-id"):
1635             affinity_group_data["vim-affinity-group-id"] = target_affinity_group[
1636                 "vim-affinity-group-id"
1637             ]
1638
1639         extra_dict["params"] = {
1640             "affinity_group_data": affinity_group_data,
1641         }
1642
1643         return extra_dict
1644
1645     @staticmethod
1646     def _process_recreate_vdu_params(
1647         existing_vdu: Dict[str, Any],
1648         db_nsr: Dict[str, Any],
1649         vim_info: Dict[str, Any],
1650         target_record_id: str,
1651         target_id: str,
1652         **kwargs: Dict[str, Any],
1653     ) -> Dict[str, Any]:
1654         """Function to process VDU parameters to recreate.
1655
1656         Args:
1657             existing_vdu (Dict[str, Any]): [description]
1658             db_nsr (Dict[str, Any]): [description]
1659             vim_info (Dict[str, Any]): [description]
1660             target_record_id (str): [description]
1661             target_id (str): [description]
1662
1663         Returns:
1664             Dict[str, Any]: [description]
1665         """
1666         vnfr = kwargs.get("vnfr")
1667         vdu2cloud_init = kwargs.get("vdu2cloud_init")
1668         # logger = kwargs.get("logger")
1669         db = kwargs.get("db")
1670         fs = kwargs.get("fs")
1671         ro_nsr_public_key = kwargs.get("ro_nsr_public_key")
1672
1673         extra_dict = {}
1674         net_list = []
1675
1676         vim_details = {}
1677         vim_details_text = existing_vdu["vim_info"][target_id].get("vim_details", None)
1678         if vim_details_text:
1679             vim_details = yaml.safe_load(f"{vim_details_text}")
1680
1681         for iface_index, interface in enumerate(existing_vdu["interfaces"]):
1682
1683             if "port-security-enabled" in interface:
1684                 interface["port_security"] = interface.pop("port-security-enabled")
1685
1686             if "port-security-disable-strategy" in interface:
1687                 interface["port_security_disable_strategy"] = interface.pop(
1688                     "port-security-disable-strategy"
1689                 )
1690
1691             net_item = {
1692                 x: v
1693                 for x, v in interface.items()
1694                 if x
1695                 in (
1696                     "name",
1697                     "vpci",
1698                     "port_security",
1699                     "port_security_disable_strategy",
1700                     "floating_ip",
1701                 )
1702             }
1703             existing_ifaces = existing_vdu["vim_info"][target_id].get(
1704                 "interfaces_backup", []
1705             )
1706             net_id = next(
1707                 (
1708                     i["vim_net_id"]
1709                     for i in existing_ifaces
1710                     if i["ip_address"] == interface["ip-address"]
1711                 ),
1712                 None,
1713             )
1714
1715             net_item["net_id"] = net_id
1716             net_item["type"] = "virtual"
1717
1718             # TODO mac_address: used for  SR-IOV ifaces #TODO for other types
1719             # TODO floating_ip: True/False (or it can be None)
1720             if interface.get("type") in ("SR-IOV", "PCI-PASSTHROUGH"):
1721                 net_item["use"] = "data"
1722                 net_item["model"] = interface["type"]
1723                 net_item["type"] = interface["type"]
1724             elif (
1725                 interface.get("type") == "OM-MGMT"
1726                 or interface.get("mgmt-interface")
1727                 or interface.get("mgmt-vnf")
1728             ):
1729                 net_item["use"] = "mgmt"
1730             else:
1731                 # if interface.get("type") in ("VIRTIO", "E1000", "PARAVIRT"):
1732                 net_item["use"] = "bridge"
1733                 net_item["model"] = interface.get("type")
1734
1735             if interface.get("ip-address"):
1736                 net_item["ip_address"] = interface["ip-address"]
1737
1738             if interface.get("mac-address"):
1739                 net_item["mac_address"] = interface["mac-address"]
1740
1741             net_list.append(net_item)
1742
1743             if interface.get("mgmt-vnf"):
1744                 extra_dict["mgmt_vnf_interface"] = iface_index
1745             elif interface.get("mgmt-interface"):
1746                 extra_dict["mgmt_vdu_interface"] = iface_index
1747
1748         # cloud config
1749         cloud_config = {}
1750
1751         if existing_vdu.get("cloud-init"):
1752             if existing_vdu["cloud-init"] not in vdu2cloud_init:
1753                 vdu2cloud_init[existing_vdu["cloud-init"]] = Ns._get_cloud_init(
1754                     db=db,
1755                     fs=fs,
1756                     location=existing_vdu["cloud-init"],
1757                 )
1758
1759             cloud_content_ = vdu2cloud_init[existing_vdu["cloud-init"]]
1760             cloud_config["user-data"] = Ns._parse_jinja2(
1761                 cloud_init_content=cloud_content_,
1762                 params=existing_vdu.get("additionalParams"),
1763                 context=existing_vdu["cloud-init"],
1764             )
1765
1766         if existing_vdu.get("boot-data-drive"):
1767             cloud_config["boot-data-drive"] = existing_vdu.get("boot-data-drive")
1768
1769         ssh_keys = []
1770
1771         if existing_vdu.get("ssh-keys"):
1772             ssh_keys += existing_vdu.get("ssh-keys")
1773
1774         if existing_vdu.get("ssh-access-required"):
1775             ssh_keys.append(ro_nsr_public_key)
1776
1777         if ssh_keys:
1778             cloud_config["key-pairs"] = ssh_keys
1779
1780         disk_list = []
1781         for vol_id in vim_details.get("os-extended-volumes:volumes_attached", []):
1782             disk_list.append({"vim_id": vol_id["id"]})
1783
1784         affinity_group_list = []
1785
1786         if existing_vdu.get("affinity-or-anti-affinity-group-id"):
1787             affinity_group = {}
1788             for affinity_group_id in existing_vdu["affinity-or-anti-affinity-group-id"]:
1789                 for group in db_nsr.get("affinity-or-anti-affinity-group"):
1790                     if (
1791                         group["id"] == affinity_group_id
1792                         and group["vim_info"][target_id].get("vim_id", None) is not None
1793                     ):
1794                         affinity_group["affinity_group_id"] = group["vim_info"][
1795                             target_id
1796                         ].get("vim_id", None)
1797                         affinity_group_list.append(affinity_group)
1798
1799         extra_dict["params"] = {
1800             "name": "{}-{}-{}-{}".format(
1801                 db_nsr["name"][:16],
1802                 vnfr["member-vnf-index-ref"][:16],
1803                 existing_vdu["vdu-name"][:32],
1804                 existing_vdu.get("count-index") or 0,
1805             ),
1806             "description": existing_vdu["vdu-name"],
1807             "start": True,
1808             "image_id": vim_details["image"]["id"],
1809             "flavor_id": vim_details["flavor"]["id"],
1810             "affinity_group_list": affinity_group_list,
1811             "net_list": net_list,
1812             "cloud_config": cloud_config or None,
1813             "disk_list": disk_list,
1814             "availability_zone_index": None,  # TODO
1815             "availability_zone_list": None,  # TODO
1816         }
1817
1818         return extra_dict
1819
1820     def calculate_diff_items(
1821         self,
1822         indata,
1823         db_nsr,
1824         db_ro_nsr,
1825         db_nsr_update,
1826         item,
1827         tasks_by_target_record_id,
1828         action_id,
1829         nsr_id,
1830         task_index,
1831         vnfr_id=None,
1832         vnfr=None,
1833     ):
1834         """Function that returns the incremental changes (creation, deletion)
1835         related to a specific item `item` to be done. This function should be
1836         called for NS instantiation, NS termination, NS update to add a new VNF
1837         or a new VLD, remove a VNF or VLD, etc.
1838         Item can be `net`, `flavor`, `image` or `vdu`.
1839         It takes a list of target items from indata (which came from the REST API)
1840         and compares with the existing items from db_ro_nsr, identifying the
1841         incremental changes to be done. During the comparison, it calls the method
1842         `process_params` (which was passed as parameter, and is particular for each
1843         `item`)
1844
1845         Args:
1846             indata (Dict[str, Any]): deployment info
1847             db_nsr: NSR record from DB
1848             db_ro_nsr (Dict[str, Any]): record from "ro_nsrs"
1849             db_nsr_update (Dict[str, Any]): NSR info to update in DB
1850             item (str): element to process (net, vdu...)
1851             tasks_by_target_record_id (Dict[str, Any]):
1852                 [<target_record_id>, <task>]
1853             action_id (str): action id
1854             nsr_id (str): NSR id
1855             task_index (number): task index to add to task name
1856             vnfr_id (str): VNFR id
1857             vnfr (Dict[str, Any]): VNFR info
1858
1859         Returns:
1860             List: list with the incremental changes (deletes, creates) for each item
1861             number: current task index
1862         """
1863
1864         diff_items = []
1865         db_path = ""
1866         db_record = ""
1867         target_list = []
1868         existing_list = []
1869         process_params = None
1870         vdu2cloud_init = indata.get("cloud_init_content") or {}
1871         ro_nsr_public_key = db_ro_nsr["public_key"]
1872
1873         # According to the type of item, the path, the target_list,
1874         # the existing_list and the method to process params are set
1875         db_path = self.db_path_map[item]
1876         process_params = self.process_params_function_map[item]
1877         if item in ("net", "vdu"):
1878             # This case is specific for the NS VLD (not applied to VDU)
1879             if vnfr is None:
1880                 db_record = "nsrs:{}:{}".format(nsr_id, db_path)
1881                 target_list = indata.get("ns", []).get(db_path, [])
1882                 existing_list = db_nsr.get(db_path, [])
1883             # This case is common for VNF VLDs and VNF VDUs
1884             else:
1885                 db_record = "vnfrs:{}:{}".format(vnfr_id, db_path)
1886                 target_vnf = next(
1887                     (vnf for vnf in indata.get("vnf", ()) if vnf["_id"] == vnfr_id),
1888                     None,
1889                 )
1890                 target_list = target_vnf.get(db_path, []) if target_vnf else []
1891                 existing_list = vnfr.get(db_path, [])
1892         elif item in ("image", "flavor", "affinity-or-anti-affinity-group"):
1893             db_record = "nsrs:{}:{}".format(nsr_id, db_path)
1894             target_list = indata.get(item, [])
1895             existing_list = db_nsr.get(item, [])
1896         else:
1897             raise NsException("Item not supported: {}", item)
1898
1899         # ensure all the target_list elements has an "id". If not assign the index as id
1900         if target_list is None:
1901             target_list = []
1902         for target_index, tl in enumerate(target_list):
1903             if tl and not tl.get("id"):
1904                 tl["id"] = str(target_index)
1905
1906         # step 1 items (networks,vdus,...) to be deleted/updated
1907         for item_index, existing_item in enumerate(existing_list):
1908             target_item = next(
1909                 (t for t in target_list if t["id"] == existing_item["id"]),
1910                 None,
1911             )
1912
1913             for target_vim, existing_viminfo in existing_item.get(
1914                 "vim_info", {}
1915             ).items():
1916                 if existing_viminfo is None:
1917                     continue
1918
1919                 if target_item:
1920                     target_viminfo = target_item.get("vim_info", {}).get(target_vim)
1921                 else:
1922                     target_viminfo = None
1923
1924                 if target_viminfo is None:
1925                     # must be deleted
1926                     self._assign_vim(target_vim)
1927                     target_record_id = "{}.{}".format(db_record, existing_item["id"])
1928                     item_ = item
1929
1930                     if target_vim.startswith("sdn") or target_vim.startswith("wim"):
1931                         # item must be sdn-net instead of net if target_vim is a sdn
1932                         item_ = "sdn_net"
1933                         target_record_id += ".sdn"
1934
1935                     deployment_info = {
1936                         "action_id": action_id,
1937                         "nsr_id": nsr_id,
1938                         "task_index": task_index,
1939                     }
1940
1941                     diff_items.append(
1942                         {
1943                             "deployment_info": deployment_info,
1944                             "target_id": target_vim,
1945                             "item": item_,
1946                             "action": "DELETE",
1947                             "target_record": f"{db_record}.{item_index}.vim_info.{target_vim}",
1948                             "target_record_id": target_record_id,
1949                         }
1950                     )
1951                     task_index += 1
1952
1953         # step 2 items (networks,vdus,...) to be created
1954         for target_item in target_list:
1955             item_index = -1
1956
1957             for item_index, existing_item in enumerate(existing_list):
1958                 if existing_item["id"] == target_item["id"]:
1959                     break
1960             else:
1961                 item_index += 1
1962                 db_nsr_update[db_path + ".{}".format(item_index)] = target_item
1963                 existing_list.append(target_item)
1964                 existing_item = None
1965
1966             for target_vim, target_viminfo in target_item.get("vim_info", {}).items():
1967                 existing_viminfo = None
1968
1969                 if existing_item:
1970                     existing_viminfo = existing_item.get("vim_info", {}).get(target_vim)
1971
1972                 if existing_viminfo is not None:
1973                     continue
1974
1975                 target_record_id = "{}.{}".format(db_record, target_item["id"])
1976                 item_ = item
1977
1978                 if target_vim.startswith("sdn") or target_vim.startswith("wim"):
1979                     # item must be sdn-net instead of net if target_vim is a sdn
1980                     item_ = "sdn_net"
1981                     target_record_id += ".sdn"
1982
1983                 kwargs = {}
1984                 self.logger.debug(
1985                     "ns.calculate_diff_items target_item={}".format(target_item)
1986                 )
1987                 if process_params == Ns._process_flavor_params:
1988                     kwargs.update(
1989                         {
1990                             "db": self.db,
1991                         }
1992                     )
1993                     self.logger.debug(
1994                         "calculate_diff_items for flavor kwargs={}".format(kwargs)
1995                     )
1996
1997                 if process_params == Ns._process_vdu_params:
1998                     self.logger.debug("calculate_diff_items self.fs={}".format(self.fs))
1999                     kwargs.update(
2000                         {
2001                             "vnfr_id": vnfr_id,
2002                             "nsr_id": nsr_id,
2003                             "vnfr": vnfr,
2004                             "vdu2cloud_init": vdu2cloud_init,
2005                             "tasks_by_target_record_id": tasks_by_target_record_id,
2006                             "logger": self.logger,
2007                             "db": self.db,
2008                             "fs": self.fs,
2009                             "ro_nsr_public_key": ro_nsr_public_key,
2010                         }
2011                     )
2012                     self.logger.debug("calculate_diff_items kwargs={}".format(kwargs))
2013
2014                 extra_dict = process_params(
2015                     target_item,
2016                     indata,
2017                     target_viminfo,
2018                     target_record_id,
2019                     **kwargs,
2020                 )
2021                 self._assign_vim(target_vim)
2022
2023                 deployment_info = {
2024                     "action_id": action_id,
2025                     "nsr_id": nsr_id,
2026                     "task_index": task_index,
2027                 }
2028
2029                 new_item = {
2030                     "deployment_info": deployment_info,
2031                     "target_id": target_vim,
2032                     "item": item_,
2033                     "action": "CREATE",
2034                     "target_record": f"{db_record}.{item_index}.vim_info.{target_vim}",
2035                     "target_record_id": target_record_id,
2036                     "extra_dict": extra_dict,
2037                     "common_id": target_item.get("common_id", None),
2038                 }
2039                 diff_items.append(new_item)
2040                 tasks_by_target_record_id[target_record_id] = new_item
2041                 task_index += 1
2042
2043                 db_nsr_update[db_path + ".{}".format(item_index)] = target_item
2044
2045         return diff_items, task_index
2046
2047     def calculate_all_differences_to_deploy(
2048         self,
2049         indata,
2050         nsr_id,
2051         db_nsr,
2052         db_vnfrs,
2053         db_ro_nsr,
2054         db_nsr_update,
2055         db_vnfrs_update,
2056         action_id,
2057         tasks_by_target_record_id,
2058     ):
2059         """This method calculates the ordered list of items (`changes_list`)
2060         to be created and deleted.
2061
2062         Args:
2063             indata (Dict[str, Any]): deployment info
2064             nsr_id (str): NSR id
2065             db_nsr: NSR record from DB
2066             db_vnfrs: VNFRS record from DB
2067             db_ro_nsr (Dict[str, Any]): record from "ro_nsrs"
2068             db_nsr_update (Dict[str, Any]): NSR info to update in DB
2069             db_vnfrs_update (Dict[str, Any]): VNFRS info to update in DB
2070             action_id (str): action id
2071             tasks_by_target_record_id (Dict[str, Any]):
2072                 [<target_record_id>, <task>]
2073
2074         Returns:
2075             List: ordered list of items to be created and deleted.
2076         """
2077
2078         task_index = 0
2079         # set list with diffs:
2080         changes_list = []
2081
2082         # NS vld, image and flavor
2083         for item in ["net", "image", "flavor", "affinity-or-anti-affinity-group"]:
2084             self.logger.debug("process NS={} {}".format(nsr_id, item))
2085             diff_items, task_index = self.calculate_diff_items(
2086                 indata=indata,
2087                 db_nsr=db_nsr,
2088                 db_ro_nsr=db_ro_nsr,
2089                 db_nsr_update=db_nsr_update,
2090                 item=item,
2091                 tasks_by_target_record_id=tasks_by_target_record_id,
2092                 action_id=action_id,
2093                 nsr_id=nsr_id,
2094                 task_index=task_index,
2095                 vnfr_id=None,
2096             )
2097             changes_list += diff_items
2098
2099         # VNF vlds and vdus
2100         for vnfr_id, vnfr in db_vnfrs.items():
2101             # vnfr_id need to be set as global variable for among others nested method _process_vdu_params
2102             for item in ["net", "vdu"]:
2103                 self.logger.debug("process VNF={} {}".format(vnfr_id, item))
2104                 diff_items, task_index = self.calculate_diff_items(
2105                     indata=indata,
2106                     db_nsr=db_nsr,
2107                     db_ro_nsr=db_ro_nsr,
2108                     db_nsr_update=db_vnfrs_update[vnfr["_id"]],
2109                     item=item,
2110                     tasks_by_target_record_id=tasks_by_target_record_id,
2111                     action_id=action_id,
2112                     nsr_id=nsr_id,
2113                     task_index=task_index,
2114                     vnfr_id=vnfr_id,
2115                     vnfr=vnfr,
2116                 )
2117                 changes_list += diff_items
2118
2119         return changes_list
2120
2121     def define_all_tasks(
2122         self,
2123         changes_list,
2124         db_new_tasks,
2125         tasks_by_target_record_id,
2126     ):
2127         """Function to create all the task structures obtanied from
2128         the method calculate_all_differences_to_deploy
2129
2130         Args:
2131             changes_list (List): ordered list of items to be created or deleted
2132             db_new_tasks (List): tasks list to be created
2133             action_id (str): action id
2134             tasks_by_target_record_id (Dict[str, Any]):
2135                 [<target_record_id>, <task>]
2136
2137         """
2138
2139         for change in changes_list:
2140             task = Ns._create_task(
2141                 deployment_info=change["deployment_info"],
2142                 target_id=change["target_id"],
2143                 item=change["item"],
2144                 action=change["action"],
2145                 target_record=change["target_record"],
2146                 target_record_id=change["target_record_id"],
2147                 extra_dict=change.get("extra_dict", None),
2148             )
2149
2150             self.logger.debug("ns.define_all_tasks task={}".format(task))
2151             tasks_by_target_record_id[change["target_record_id"]] = task
2152             db_new_tasks.append(task)
2153
2154             if change.get("common_id"):
2155                 task["common_id"] = change["common_id"]
2156
2157     def upload_all_tasks(
2158         self,
2159         db_new_tasks,
2160         now,
2161     ):
2162         """Function to save all tasks in the common DB
2163
2164         Args:
2165             db_new_tasks (List): tasks list to be created
2166             now (time): current time
2167
2168         """
2169
2170         nb_ro_tasks = 0  # for logging
2171
2172         for db_task in db_new_tasks:
2173             target_id = db_task.pop("target_id")
2174             common_id = db_task.get("common_id")
2175
2176             # Do not chek tasks with vim_status DELETED
2177             # because in manual heealing there are two tasks for the same vdur:
2178             #   one with vim_status deleted and the other one with the actual VM status.
2179
2180             if common_id:
2181                 if self.db.set_one(
2182                     "ro_tasks",
2183                     q_filter={
2184                         "target_id": target_id,
2185                         "tasks.common_id": common_id,
2186                         "vim_info.vim_status.ne": "DELETED",
2187                     },
2188                     update_dict={"to_check_at": now, "modified_at": now},
2189                     push={"tasks": db_task},
2190                     fail_on_empty=False,
2191                 ):
2192                     continue
2193
2194             if not self.db.set_one(
2195                 "ro_tasks",
2196                 q_filter={
2197                     "target_id": target_id,
2198                     "tasks.target_record": db_task["target_record"],
2199                     "vim_info.vim_status.ne": "DELETED",
2200                 },
2201                 update_dict={"to_check_at": now, "modified_at": now},
2202                 push={"tasks": db_task},
2203                 fail_on_empty=False,
2204             ):
2205                 # Create a ro_task
2206                 self.logger.debug("Updating database, Creating ro_tasks")
2207                 db_ro_task = Ns._create_ro_task(target_id, db_task)
2208                 nb_ro_tasks += 1
2209                 self.db.create("ro_tasks", db_ro_task)
2210
2211         self.logger.debug(
2212             "Created {} ro_tasks; {} tasks - db_new_tasks={}".format(
2213                 nb_ro_tasks, len(db_new_tasks), db_new_tasks
2214             )
2215         )
2216
2217     def upload_recreate_tasks(
2218         self,
2219         db_new_tasks,
2220         now,
2221     ):
2222         """Function to save recreate tasks in the common DB
2223
2224         Args:
2225             db_new_tasks (List): tasks list to be created
2226             now (time): current time
2227
2228         """
2229
2230         nb_ro_tasks = 0  # for logging
2231
2232         for db_task in db_new_tasks:
2233             target_id = db_task.pop("target_id")
2234             self.logger.debug("target_id={} db_task={}".format(target_id, db_task))
2235
2236             action = db_task.get("action", None)
2237
2238             # Create a ro_task
2239             self.logger.debug("Updating database, Creating ro_tasks")
2240             db_ro_task = Ns._create_ro_task(target_id, db_task)
2241
2242             # If DELETE task: the associated created items should be removed
2243             # (except persistent volumes):
2244             if action == "DELETE":
2245                 db_ro_task["vim_info"]["created"] = True
2246                 db_ro_task["vim_info"]["created_items"] = db_task.get(
2247                     "created_items", {}
2248                 )
2249                 db_ro_task["vim_info"]["volumes_to_hold"] = db_task.get(
2250                     "volumes_to_hold", []
2251                 )
2252                 db_ro_task["vim_info"]["vim_id"] = db_task.get("vim_id", None)
2253
2254             nb_ro_tasks += 1
2255             self.logger.debug("upload_all_tasks db_ro_task={}".format(db_ro_task))
2256             self.db.create("ro_tasks", db_ro_task)
2257
2258         self.logger.debug(
2259             "Created {} ro_tasks; {} tasks - db_new_tasks={}".format(
2260                 nb_ro_tasks, len(db_new_tasks), db_new_tasks
2261             )
2262         )
2263
2264     def _prepare_created_items_for_healing(
2265         self,
2266         nsr_id,
2267         target_record,
2268     ):
2269         created_items = {}
2270         # Get created_items from ro_task
2271         ro_tasks = self.db.get_list("ro_tasks", {"tasks.nsr_id": nsr_id})
2272         for ro_task in ro_tasks:
2273             for task in ro_task["tasks"]:
2274                 if (
2275                     task["target_record"] == target_record
2276                     and task["action"] == "CREATE"
2277                     and ro_task["vim_info"]["created_items"]
2278                 ):
2279                     created_items = ro_task["vim_info"]["created_items"]
2280                     break
2281
2282         return created_items
2283
2284     def _prepare_persistent_volumes_for_healing(
2285         self,
2286         target_id,
2287         existing_vdu,
2288     ):
2289         # The associated volumes of the VM shouldn't be removed
2290         volumes_list = []
2291         vim_details = {}
2292         vim_details_text = existing_vdu["vim_info"][target_id].get("vim_details", None)
2293         if vim_details_text:
2294             vim_details = yaml.safe_load(f"{vim_details_text}")
2295
2296             for vol_id in vim_details.get("os-extended-volumes:volumes_attached", []):
2297                 volumes_list.append(vol_id["id"])
2298
2299         return volumes_list
2300
2301     def prepare_changes_to_recreate(
2302         self,
2303         indata,
2304         nsr_id,
2305         db_nsr,
2306         db_vnfrs,
2307         db_ro_nsr,
2308         action_id,
2309         tasks_by_target_record_id,
2310     ):
2311         """This method will obtain an ordered list of items (`changes_list`)
2312         to be created and deleted to meet the recreate request.
2313         """
2314
2315         self.logger.debug(
2316             "ns.prepare_changes_to_recreate nsr_id={} indata={}".format(nsr_id, indata)
2317         )
2318
2319         task_index = 0
2320         # set list with diffs:
2321         changes_list = []
2322         db_path = self.db_path_map["vdu"]
2323         target_list = indata.get("healVnfData", {})
2324         vdu2cloud_init = indata.get("cloud_init_content") or {}
2325         ro_nsr_public_key = db_ro_nsr["public_key"]
2326
2327         # Check each VNF of the target
2328         for target_vnf in target_list:
2329             # Find this VNF in the list from DB
2330             vnfr_id = target_vnf.get("vnfInstanceId", None)
2331             if vnfr_id:
2332                 existing_vnf = db_vnfrs.get(vnfr_id)
2333                 db_record = "vnfrs:{}:{}".format(vnfr_id, db_path)
2334                 # vim_account_id = existing_vnf.get("vim-account-id", "")
2335
2336             # Check each VDU of this VNF
2337             for target_vdu in target_vnf["additionalParams"].get("vdu", None):
2338                 vdu_name = target_vdu.get("vdu-id", None)
2339                 # For multi instance VDU count-index is mandatory
2340                 # For single session VDU count-indes is 0
2341                 count_index = target_vdu.get("count-index", 0)
2342                 item_index = 0
2343                 existing_instance = None
2344                 for instance in existing_vnf.get("vdur", None):
2345                     if (
2346                         instance["vdu-name"] == vdu_name
2347                         and instance["count-index"] == count_index
2348                     ):
2349                         existing_instance = instance
2350                         break
2351                     else:
2352                         item_index += 1
2353
2354                 target_record_id = "{}.{}".format(db_record, existing_instance["id"])
2355
2356                 # The target VIM is the one already existing in DB to recreate
2357                 for target_vim, target_viminfo in existing_instance.get(
2358                     "vim_info", {}
2359                 ).items():
2360                     # step 1 vdu to be deleted
2361                     self._assign_vim(target_vim)
2362                     deployment_info = {
2363                         "action_id": action_id,
2364                         "nsr_id": nsr_id,
2365                         "task_index": task_index,
2366                     }
2367
2368                     target_record = f"{db_record}.{item_index}.vim_info.{target_vim}"
2369                     created_items = self._prepare_created_items_for_healing(
2370                         nsr_id, target_record
2371                     )
2372
2373                     volumes_to_hold = self._prepare_persistent_volumes_for_healing(
2374                         target_vim, existing_instance
2375                     )
2376
2377                     # Specific extra params for recreate tasks:
2378                     extra_dict = {
2379                         "created_items": created_items,
2380                         "vim_id": existing_instance["vim-id"],
2381                         "volumes_to_hold": volumes_to_hold,
2382                     }
2383
2384                     changes_list.append(
2385                         {
2386                             "deployment_info": deployment_info,
2387                             "target_id": target_vim,
2388                             "item": "vdu",
2389                             "action": "DELETE",
2390                             "target_record": target_record,
2391                             "target_record_id": target_record_id,
2392                             "extra_dict": extra_dict,
2393                         }
2394                     )
2395                     delete_task_id = f"{action_id}:{task_index}"
2396                     task_index += 1
2397
2398                     # step 2 vdu to be created
2399                     kwargs = {}
2400                     kwargs.update(
2401                         {
2402                             "vnfr_id": vnfr_id,
2403                             "nsr_id": nsr_id,
2404                             "vnfr": existing_vnf,
2405                             "vdu2cloud_init": vdu2cloud_init,
2406                             "tasks_by_target_record_id": tasks_by_target_record_id,
2407                             "logger": self.logger,
2408                             "db": self.db,
2409                             "fs": self.fs,
2410                             "ro_nsr_public_key": ro_nsr_public_key,
2411                         }
2412                     )
2413
2414                     extra_dict = self._process_recreate_vdu_params(
2415                         existing_instance,
2416                         db_nsr,
2417                         target_viminfo,
2418                         target_record_id,
2419                         target_vim,
2420                         **kwargs,
2421                     )
2422
2423                     # The CREATE task depens on the DELETE task
2424                     extra_dict["depends_on"] = [delete_task_id]
2425
2426                     # Add volumes created from created_items if any
2427                     # Ports should be deleted with delete task and automatically created with create task
2428                     volumes = {}
2429                     for k, v in created_items.items():
2430                         try:
2431                             k_item, _, k_id = k.partition(":")
2432                             if k_item == "volume":
2433                                 volumes[k] = v
2434                         except Exception as e:
2435                             self.logger.error(
2436                                 "Error evaluating created item {}: {}".format(k, e)
2437                             )
2438                     extra_dict["previous_created_volumes"] = volumes
2439
2440                     deployment_info = {
2441                         "action_id": action_id,
2442                         "nsr_id": nsr_id,
2443                         "task_index": task_index,
2444                     }
2445                     self._assign_vim(target_vim)
2446
2447                     new_item = {
2448                         "deployment_info": deployment_info,
2449                         "target_id": target_vim,
2450                         "item": "vdu",
2451                         "action": "CREATE",
2452                         "target_record": target_record,
2453                         "target_record_id": target_record_id,
2454                         "extra_dict": extra_dict,
2455                     }
2456                     changes_list.append(new_item)
2457                     tasks_by_target_record_id[target_record_id] = new_item
2458                     task_index += 1
2459
2460         return changes_list
2461
2462     def recreate(self, session, indata, version, nsr_id, *args, **kwargs):
2463         self.logger.debug("ns.recreate nsr_id={} indata={}".format(nsr_id, indata))
2464         # TODO: validate_input(indata, recreate_schema)
2465         action_id = indata.get("action_id", str(uuid4()))
2466         # get current deployment
2467         db_vnfrs = {}  # vnf's info indexed by _id
2468         step = ""
2469         logging_text = "Recreate nsr_id={} action_id={} indata={}".format(
2470             nsr_id, action_id, indata
2471         )
2472         self.logger.debug(logging_text + "Enter")
2473
2474         try:
2475             step = "Getting ns and vnfr record from db"
2476             db_nsr = self.db.get_one("nsrs", {"_id": nsr_id})
2477             db_new_tasks = []
2478             tasks_by_target_record_id = {}
2479             # read from db: vnf's of this ns
2480             step = "Getting vnfrs from db"
2481             db_vnfrs_list = self.db.get_list("vnfrs", {"nsr-id-ref": nsr_id})
2482             self.logger.debug("ns.recreate: db_vnfrs_list={}".format(db_vnfrs_list))
2483
2484             if not db_vnfrs_list:
2485                 raise NsException("Cannot obtain associated VNF for ns")
2486
2487             for vnfr in db_vnfrs_list:
2488                 db_vnfrs[vnfr["_id"]] = vnfr
2489
2490             now = time()
2491             db_ro_nsr = self.db.get_one("ro_nsrs", {"_id": nsr_id}, fail_on_empty=False)
2492             self.logger.debug("ns.recreate: db_ro_nsr={}".format(db_ro_nsr))
2493
2494             if not db_ro_nsr:
2495                 db_ro_nsr = self._create_db_ro_nsrs(nsr_id, now)
2496
2497             with self.write_lock:
2498                 # NS
2499                 step = "process NS elements"
2500                 changes_list = self.prepare_changes_to_recreate(
2501                     indata=indata,
2502                     nsr_id=nsr_id,
2503                     db_nsr=db_nsr,
2504                     db_vnfrs=db_vnfrs,
2505                     db_ro_nsr=db_ro_nsr,
2506                     action_id=action_id,
2507                     tasks_by_target_record_id=tasks_by_target_record_id,
2508                 )
2509
2510                 self.define_all_tasks(
2511                     changes_list=changes_list,
2512                     db_new_tasks=db_new_tasks,
2513                     tasks_by_target_record_id=tasks_by_target_record_id,
2514                 )
2515
2516                 # Delete all ro_tasks registered for the targets vdurs (target_record)
2517                 # If task of type CREATE exist then vim will try to get info form deleted VMs.
2518                 # So remove all task related to target record.
2519                 ro_tasks = self.db.get_list("ro_tasks", {"tasks.nsr_id": nsr_id})
2520                 for change in changes_list:
2521                     for ro_task in ro_tasks:
2522                         for task in ro_task["tasks"]:
2523                             if task["target_record"] == change["target_record"]:
2524                                 self.db.del_one(
2525                                     "ro_tasks",
2526                                     q_filter={
2527                                         "_id": ro_task["_id"],
2528                                         "modified_at": ro_task["modified_at"],
2529                                     },
2530                                     fail_on_empty=False,
2531                                 )
2532
2533                 step = "Updating database, Appending tasks to ro_tasks"
2534                 self.upload_recreate_tasks(
2535                     db_new_tasks=db_new_tasks,
2536                     now=now,
2537                 )
2538
2539             self.logger.debug(
2540                 logging_text + "Exit. Created {} tasks".format(len(db_new_tasks))
2541             )
2542
2543             return (
2544                 {"status": "ok", "nsr_id": nsr_id, "action_id": action_id},
2545                 action_id,
2546                 True,
2547             )
2548         except Exception as e:
2549             if isinstance(e, (DbException, NsException)):
2550                 self.logger.error(
2551                     logging_text + "Exit Exception while '{}': {}".format(step, e)
2552                 )
2553             else:
2554                 e = traceback_format_exc()
2555                 self.logger.critical(
2556                     logging_text + "Exit Exception while '{}': {}".format(step, e),
2557                     exc_info=True,
2558                 )
2559
2560             raise NsException(e)
2561
2562     def deploy(self, session, indata, version, nsr_id, *args, **kwargs):
2563         self.logger.debug("ns.deploy nsr_id={} indata={}".format(nsr_id, indata))
2564         validate_input(indata, deploy_schema)
2565         action_id = indata.get("action_id", str(uuid4()))
2566         task_index = 0
2567         # get current deployment
2568         db_nsr_update = {}  # update operation on nsrs
2569         db_vnfrs_update = {}
2570         db_vnfrs = {}  # vnf's info indexed by _id
2571         step = ""
2572         logging_text = "Task deploy nsr_id={} action_id={} ".format(nsr_id, action_id)
2573         self.logger.debug(logging_text + "Enter")
2574
2575         try:
2576             step = "Getting ns and vnfr record from db"
2577             db_nsr = self.db.get_one("nsrs", {"_id": nsr_id})
2578             self.logger.debug("ns.deploy: db_nsr={}".format(db_nsr))
2579             db_new_tasks = []
2580             tasks_by_target_record_id = {}
2581             # read from db: vnf's of this ns
2582             step = "Getting vnfrs from db"
2583             db_vnfrs_list = self.db.get_list("vnfrs", {"nsr-id-ref": nsr_id})
2584
2585             if not db_vnfrs_list:
2586                 raise NsException("Cannot obtain associated VNF for ns")
2587
2588             for vnfr in db_vnfrs_list:
2589                 db_vnfrs[vnfr["_id"]] = vnfr
2590                 db_vnfrs_update[vnfr["_id"]] = {}
2591             self.logger.debug("ns.deploy db_vnfrs={}".format(db_vnfrs))
2592
2593             now = time()
2594             db_ro_nsr = self.db.get_one("ro_nsrs", {"_id": nsr_id}, fail_on_empty=False)
2595
2596             if not db_ro_nsr:
2597                 db_ro_nsr = self._create_db_ro_nsrs(nsr_id, now)
2598
2599             # check that action_id is not in the list of actions. Suffixed with :index
2600             if action_id in db_ro_nsr["actions"]:
2601                 index = 1
2602
2603                 while True:
2604                     new_action_id = "{}:{}".format(action_id, index)
2605
2606                     if new_action_id not in db_ro_nsr["actions"]:
2607                         action_id = new_action_id
2608                         self.logger.debug(
2609                             logging_text
2610                             + "Changing action_id in use to {}".format(action_id)
2611                         )
2612                         break
2613
2614                     index += 1
2615
2616             def _process_action(indata):
2617                 nonlocal db_new_tasks
2618                 nonlocal action_id
2619                 nonlocal nsr_id
2620                 nonlocal task_index
2621                 nonlocal db_vnfrs
2622                 nonlocal db_ro_nsr
2623
2624                 if indata["action"]["action"] == "inject_ssh_key":
2625                     key = indata["action"].get("key")
2626                     user = indata["action"].get("user")
2627                     password = indata["action"].get("password")
2628
2629                     for vnf in indata.get("vnf", ()):
2630                         if vnf["_id"] not in db_vnfrs:
2631                             raise NsException("Invalid vnf={}".format(vnf["_id"]))
2632
2633                         db_vnfr = db_vnfrs[vnf["_id"]]
2634
2635                         for target_vdu in vnf.get("vdur", ()):
2636                             vdu_index, vdur = next(
2637                                 (
2638                                     i_v
2639                                     for i_v in enumerate(db_vnfr["vdur"])
2640                                     if i_v[1]["id"] == target_vdu["id"]
2641                                 ),
2642                                 (None, None),
2643                             )
2644
2645                             if not vdur:
2646                                 raise NsException(
2647                                     "Invalid vdu vnf={}.{}".format(
2648                                         vnf["_id"], target_vdu["id"]
2649                                     )
2650                                 )
2651
2652                             target_vim, vim_info = next(
2653                                 k_v for k_v in vdur["vim_info"].items()
2654                             )
2655                             self._assign_vim(target_vim)
2656                             target_record = "vnfrs:{}:vdur.{}.ssh_keys".format(
2657                                 vnf["_id"], vdu_index
2658                             )
2659                             extra_dict = {
2660                                 "depends_on": [
2661                                     "vnfrs:{}:vdur.{}".format(vnf["_id"], vdur["id"])
2662                                 ],
2663                                 "params": {
2664                                     "ip_address": vdur.get("ip-address"),
2665                                     "user": user,
2666                                     "key": key,
2667                                     "password": password,
2668                                     "private_key": db_ro_nsr["private_key"],
2669                                     "salt": db_ro_nsr["_id"],
2670                                     "schema_version": db_ro_nsr["_admin"][
2671                                         "schema_version"
2672                                     ],
2673                                 },
2674                             }
2675
2676                             deployment_info = {
2677                                 "action_id": action_id,
2678                                 "nsr_id": nsr_id,
2679                                 "task_index": task_index,
2680                             }
2681
2682                             task = Ns._create_task(
2683                                 deployment_info=deployment_info,
2684                                 target_id=target_vim,
2685                                 item="vdu",
2686                                 action="EXEC",
2687                                 target_record=target_record,
2688                                 target_record_id=None,
2689                                 extra_dict=extra_dict,
2690                             )
2691
2692                             task_index = deployment_info.get("task_index")
2693
2694                             db_new_tasks.append(task)
2695
2696             with self.write_lock:
2697                 if indata.get("action"):
2698                     _process_action(indata)
2699                 else:
2700                     # compute network differences
2701                     # NS
2702                     step = "process NS elements"
2703                     changes_list = self.calculate_all_differences_to_deploy(
2704                         indata=indata,
2705                         nsr_id=nsr_id,
2706                         db_nsr=db_nsr,
2707                         db_vnfrs=db_vnfrs,
2708                         db_ro_nsr=db_ro_nsr,
2709                         db_nsr_update=db_nsr_update,
2710                         db_vnfrs_update=db_vnfrs_update,
2711                         action_id=action_id,
2712                         tasks_by_target_record_id=tasks_by_target_record_id,
2713                     )
2714                     self.define_all_tasks(
2715                         changes_list=changes_list,
2716                         db_new_tasks=db_new_tasks,
2717                         tasks_by_target_record_id=tasks_by_target_record_id,
2718                     )
2719
2720                 step = "Updating database, Appending tasks to ro_tasks"
2721                 self.upload_all_tasks(
2722                     db_new_tasks=db_new_tasks,
2723                     now=now,
2724                 )
2725
2726                 step = "Updating database, nsrs"
2727                 if db_nsr_update:
2728                     self.db.set_one("nsrs", {"_id": nsr_id}, db_nsr_update)
2729
2730                 for vnfr_id, db_vnfr_update in db_vnfrs_update.items():
2731                     if db_vnfr_update:
2732                         step = "Updating database, vnfrs={}".format(vnfr_id)
2733                         self.db.set_one("vnfrs", {"_id": vnfr_id}, db_vnfr_update)
2734
2735             self.logger.debug(
2736                 logging_text + "Exit. Created {} tasks".format(len(db_new_tasks))
2737             )
2738
2739             return (
2740                 {"status": "ok", "nsr_id": nsr_id, "action_id": action_id},
2741                 action_id,
2742                 True,
2743             )
2744         except Exception as e:
2745             if isinstance(e, (DbException, NsException)):
2746                 self.logger.error(
2747                     logging_text + "Exit Exception while '{}': {}".format(step, e)
2748                 )
2749             else:
2750                 e = traceback_format_exc()
2751                 self.logger.critical(
2752                     logging_text + "Exit Exception while '{}': {}".format(step, e),
2753                     exc_info=True,
2754                 )
2755
2756             raise NsException(e)
2757
2758     def delete(self, session, indata, version, nsr_id, *args, **kwargs):
2759         self.logger.debug("ns.delete version={} nsr_id={}".format(version, nsr_id))
2760         # self.db.del_list({"_id": ro_task["_id"], "tasks.nsr_id.ne": nsr_id})
2761
2762         with self.write_lock:
2763             try:
2764                 NsWorker.delete_db_tasks(self.db, nsr_id, None)
2765             except NsWorkerException as e:
2766                 raise NsException(e)
2767
2768         return None, None, True
2769
2770     def status(self, session, indata, version, nsr_id, action_id, *args, **kwargs):
2771         self.logger.debug(
2772             "ns.status version={} nsr_id={}, action_id={} indata={}".format(
2773                 version, nsr_id, action_id, indata
2774             )
2775         )
2776         task_list = []
2777         done = 0
2778         total = 0
2779         ro_tasks = self.db.get_list("ro_tasks", {"tasks.action_id": action_id})
2780         global_status = "DONE"
2781         details = []
2782
2783         for ro_task in ro_tasks:
2784             for task in ro_task["tasks"]:
2785                 if task and task["action_id"] == action_id:
2786                     task_list.append(task)
2787                     total += 1
2788
2789                     if task["status"] == "FAILED":
2790                         global_status = "FAILED"
2791                         error_text = "Error at {} {}: {}".format(
2792                             task["action"].lower(),
2793                             task["item"],
2794                             ro_task["vim_info"].get("vim_message") or "unknown",
2795                         )
2796                         details.append(error_text)
2797                     elif task["status"] in ("SCHEDULED", "BUILD"):
2798                         if global_status != "FAILED":
2799                             global_status = "BUILD"
2800                     else:
2801                         done += 1
2802
2803         return_data = {
2804             "status": global_status,
2805             "details": ". ".join(details)
2806             if details
2807             else "progress {}/{}".format(done, total),
2808             "nsr_id": nsr_id,
2809             "action_id": action_id,
2810             "tasks": task_list,
2811         }
2812
2813         return return_data, None, True
2814
2815     def recreate_status(
2816         self, session, indata, version, nsr_id, action_id, *args, **kwargs
2817     ):
2818         return self.status(session, indata, version, nsr_id, action_id, *args, **kwargs)
2819
2820     def cancel(self, session, indata, version, nsr_id, action_id, *args, **kwargs):
2821         print(
2822             "ns.cancel session={} indata={} version={} nsr_id={}, action_id={}".format(
2823                 session, indata, version, nsr_id, action_id
2824             )
2825         )
2826
2827         return None, None, True
2828
2829     def rebuild_start_stop_task(
2830         self,
2831         vdu_id,
2832         vnf_id,
2833         vdu_index,
2834         action_id,
2835         nsr_id,
2836         task_index,
2837         target_vim,
2838         extra_dict,
2839     ):
2840         self._assign_vim(target_vim)
2841         target_record = "vnfrs:{}:vdur.{}".format(vnf_id, vdu_index)
2842         target_record_id = "vnfrs:{}:vdur.{}".format(vnf_id, vdu_id)
2843         deployment_info = {
2844             "action_id": action_id,
2845             "nsr_id": nsr_id,
2846             "task_index": task_index,
2847         }
2848
2849         task = Ns._create_task(
2850             deployment_info=deployment_info,
2851             target_id=target_vim,
2852             item="update",
2853             action="EXEC",
2854             target_record=target_record,
2855             target_record_id=target_record_id,
2856             extra_dict=extra_dict,
2857         )
2858         return task
2859
2860     def rebuild_start_stop(
2861         self, session, action_dict, version, nsr_id, *args, **kwargs
2862     ):
2863         task_index = 0
2864         extra_dict = {}
2865         now = time()
2866         action_id = action_dict.get("action_id", str(uuid4()))
2867         step = ""
2868         logging_text = "Task deploy nsr_id={} action_id={} ".format(nsr_id, action_id)
2869         self.logger.debug(logging_text + "Enter")
2870
2871         action = list(action_dict.keys())[0]
2872         task_dict = action_dict.get(action)
2873         vim_vm_id = action_dict.get(action).get("vim_vm_id")
2874
2875         if action_dict.get("stop"):
2876             action = "shutoff"
2877         db_new_tasks = []
2878         try:
2879             step = "lock the operation & do task creation"
2880             with self.write_lock:
2881                 extra_dict["params"] = {
2882                     "vim_vm_id": vim_vm_id,
2883                     "action": action,
2884                 }
2885                 task = self.rebuild_start_stop_task(
2886                     task_dict["vdu_id"],
2887                     task_dict["vnf_id"],
2888                     task_dict["vdu_index"],
2889                     action_id,
2890                     nsr_id,
2891                     task_index,
2892                     task_dict["target_vim"],
2893                     extra_dict,
2894                 )
2895                 db_new_tasks.append(task)
2896                 step = "upload Task to db"
2897                 self.upload_all_tasks(
2898                     db_new_tasks=db_new_tasks,
2899                     now=now,
2900                 )
2901                 self.logger.debug(
2902                     logging_text + "Exit. Created {} tasks".format(len(db_new_tasks))
2903                 )
2904                 return (
2905                     {"status": "ok", "nsr_id": nsr_id, "action_id": action_id},
2906                     action_id,
2907                     True,
2908                 )
2909         except Exception as e:
2910             if isinstance(e, (DbException, NsException)):
2911                 self.logger.error(
2912                     logging_text + "Exit Exception while '{}': {}".format(step, e)
2913                 )
2914             else:
2915                 e = traceback_format_exc()
2916                 self.logger.critical(
2917                     logging_text + "Exit Exception while '{}': {}".format(step, e),
2918                     exc_info=True,
2919                 )
2920             raise NsException(e)
2921
2922     def get_deploy(self, session, indata, version, nsr_id, action_id, *args, **kwargs):
2923         nsrs = self.db.get_list("nsrs", {})
2924         return_data = []
2925
2926         for ns in nsrs:
2927             return_data.append({"_id": ns["_id"], "name": ns["name"]})
2928
2929         return return_data, None, True
2930
2931     def get_actions(self, session, indata, version, nsr_id, action_id, *args, **kwargs):
2932         ro_tasks = self.db.get_list("ro_tasks", {"tasks.nsr_id": nsr_id})
2933         return_data = []
2934
2935         for ro_task in ro_tasks:
2936             for task in ro_task["tasks"]:
2937                 if task["action_id"] not in return_data:
2938                     return_data.append(task["action_id"])
2939
2940         return return_data, None, True
2941
2942     def migrate_task(
2943         self, vdu, vnf, vdu_index, action_id, nsr_id, task_index, extra_dict
2944     ):
2945         target_vim, vim_info = next(k_v for k_v in vdu["vim_info"].items())
2946         self._assign_vim(target_vim)
2947         target_record = "vnfrs:{}:vdur.{}".format(vnf["_id"], vdu_index)
2948         target_record_id = "vnfrs:{}:vdur.{}".format(vnf["_id"], vdu["id"])
2949         deployment_info = {
2950             "action_id": action_id,
2951             "nsr_id": nsr_id,
2952             "task_index": task_index,
2953         }
2954
2955         task = Ns._create_task(
2956             deployment_info=deployment_info,
2957             target_id=target_vim,
2958             item="migrate",
2959             action="EXEC",
2960             target_record=target_record,
2961             target_record_id=target_record_id,
2962             extra_dict=extra_dict,
2963         )
2964
2965         return task
2966
2967     def migrate(self, session, indata, version, nsr_id, *args, **kwargs):
2968         task_index = 0
2969         extra_dict = {}
2970         now = time()
2971         action_id = indata.get("action_id", str(uuid4()))
2972         step = ""
2973         logging_text = "Task deploy nsr_id={} action_id={} ".format(nsr_id, action_id)
2974         self.logger.debug(logging_text + "Enter")
2975         try:
2976             vnf_instance_id = indata["vnfInstanceId"]
2977             step = "Getting vnfrs from db"
2978             db_vnfr = self.db.get_one("vnfrs", {"_id": vnf_instance_id})
2979             vdu = indata.get("vdu")
2980             migrateToHost = indata.get("migrateToHost")
2981             db_new_tasks = []
2982
2983             with self.write_lock:
2984                 if vdu is not None:
2985                     vdu_id = indata["vdu"]["vduId"]
2986                     vdu_count_index = indata["vdu"].get("vduCountIndex", 0)
2987                     for vdu_index, vdu in enumerate(db_vnfr["vdur"]):
2988                         if (
2989                             vdu["vdu-id-ref"] == vdu_id
2990                             and vdu["count-index"] == vdu_count_index
2991                         ):
2992                             extra_dict["params"] = {
2993                                 "vim_vm_id": vdu["vim-id"],
2994                                 "migrate_host": migrateToHost,
2995                                 "vdu_vim_info": vdu["vim_info"],
2996                             }
2997                             step = "Creating migration task for vdu:{}".format(vdu)
2998                             task = self.migrate_task(
2999                                 vdu,
3000                                 db_vnfr,
3001                                 vdu_index,
3002                                 action_id,
3003                                 nsr_id,
3004                                 task_index,
3005                                 extra_dict,
3006                             )
3007                             db_new_tasks.append(task)
3008                             task_index += 1
3009                             break
3010                 else:
3011
3012                     for vdu_index, vdu in enumerate(db_vnfr["vdur"]):
3013                         extra_dict["params"] = {
3014                             "vim_vm_id": vdu["vim-id"],
3015                             "migrate_host": migrateToHost,
3016                             "vdu_vim_info": vdu["vim_info"],
3017                         }
3018                         step = "Creating migration task for vdu:{}".format(vdu)
3019                         task = self.migrate_task(
3020                             vdu,
3021                             db_vnfr,
3022                             vdu_index,
3023                             action_id,
3024                             nsr_id,
3025                             task_index,
3026                             extra_dict,
3027                         )
3028                         db_new_tasks.append(task)
3029                         task_index += 1
3030
3031                 self.upload_all_tasks(
3032                     db_new_tasks=db_new_tasks,
3033                     now=now,
3034                 )
3035
3036             self.logger.debug(
3037                 logging_text + "Exit. Created {} tasks".format(len(db_new_tasks))
3038             )
3039             return (
3040                 {"status": "ok", "nsr_id": nsr_id, "action_id": action_id},
3041                 action_id,
3042                 True,
3043             )
3044         except Exception as e:
3045             if isinstance(e, (DbException, NsException)):
3046                 self.logger.error(
3047                     logging_text + "Exit Exception while '{}': {}".format(step, e)
3048                 )
3049             else:
3050                 e = traceback_format_exc()
3051                 self.logger.critical(
3052                     logging_text + "Exit Exception while '{}': {}".format(step, e),
3053                     exc_info=True,
3054                 )
3055             raise NsException(e)
3056
3057     def verticalscale_task(
3058         self, vdu, vnf, vdu_index, action_id, nsr_id, task_index, extra_dict
3059     ):
3060         target_vim, vim_info = next(k_v for k_v in vdu["vim_info"].items())
3061         self._assign_vim(target_vim)
3062         target_record = "vnfrs:{}:vdur.{}".format(vnf["_id"], vdu_index)
3063         target_record_id = "vnfrs:{}:vdur.{}".format(vnf["_id"], vdu["id"])
3064         deployment_info = {
3065             "action_id": action_id,
3066             "nsr_id": nsr_id,
3067             "task_index": task_index,
3068         }
3069
3070         task = Ns._create_task(
3071             deployment_info=deployment_info,
3072             target_id=target_vim,
3073             item="verticalscale",
3074             action="EXEC",
3075             target_record=target_record,
3076             target_record_id=target_record_id,
3077             extra_dict=extra_dict,
3078         )
3079         return task
3080
3081     def verticalscale(self, session, indata, version, nsr_id, *args, **kwargs):
3082         task_index = 0
3083         extra_dict = {}
3084         now = time()
3085         action_id = indata.get("action_id", str(uuid4()))
3086         step = ""
3087         logging_text = "Task deploy nsr_id={} action_id={} ".format(nsr_id, action_id)
3088         self.logger.debug(logging_text + "Enter")
3089         try:
3090             VnfFlavorData = indata.get("changeVnfFlavorData")
3091             vnf_instance_id = VnfFlavorData["vnfInstanceId"]
3092             step = "Getting vnfrs from db"
3093             db_vnfr = self.db.get_one("vnfrs", {"_id": vnf_instance_id})
3094             vduid = VnfFlavorData["additionalParams"]["vduid"]
3095             vduCountIndex = VnfFlavorData["additionalParams"]["vduCountIndex"]
3096             virtualMemory = VnfFlavorData["additionalParams"]["virtualMemory"]
3097             numVirtualCpu = VnfFlavorData["additionalParams"]["numVirtualCpu"]
3098             sizeOfStorage = VnfFlavorData["additionalParams"]["sizeOfStorage"]
3099             flavor_dict = {
3100                 "name": vduid + "-flv",
3101                 "ram": virtualMemory,
3102                 "vcpus": numVirtualCpu,
3103                 "disk": sizeOfStorage,
3104             }
3105             db_new_tasks = []
3106             step = "Creating Tasks for vertical scaling"
3107             with self.write_lock:
3108                 for vdu_index, vdu in enumerate(db_vnfr["vdur"]):
3109                     if (
3110                         vdu["vdu-id-ref"] == vduid
3111                         and vdu["count-index"] == vduCountIndex
3112                     ):
3113                         extra_dict["params"] = {
3114                             "vim_vm_id": vdu["vim-id"],
3115                             "flavor_dict": flavor_dict,
3116                         }
3117                         task = self.verticalscale_task(
3118                             vdu,
3119                             db_vnfr,
3120                             vdu_index,
3121                             action_id,
3122                             nsr_id,
3123                             task_index,
3124                             extra_dict,
3125                         )
3126                         db_new_tasks.append(task)
3127                         task_index += 1
3128                         break
3129                 self.upload_all_tasks(
3130                     db_new_tasks=db_new_tasks,
3131                     now=now,
3132                 )
3133             self.logger.debug(
3134                 logging_text + "Exit. Created {} tasks".format(len(db_new_tasks))
3135             )
3136             return (
3137                 {"status": "ok", "nsr_id": nsr_id, "action_id": action_id},
3138                 action_id,
3139                 True,
3140             )
3141         except Exception as e:
3142             if isinstance(e, (DbException, NsException)):
3143                 self.logger.error(
3144                     logging_text + "Exit Exception while '{}': {}".format(step, e)
3145                 )
3146             else:
3147                 e = traceback_format_exc()
3148                 self.logger.critical(
3149                     logging_text + "Exit Exception while '{}': {}".format(step, e),
3150                     exc_info=True,
3151                 )
3152             raise NsException(e)