osm_nbi/instance_topics.py

   1 # -*- coding: utf-8 -*-
   2
   3 # Licensed under the Apache License, Version 2.0 (the "License");
   4 # you may not use this file except in compliance with the License.
   5 # You may obtain a copy of the License at
   6 #
   7 #    http://www.apache.org/licenses/LICENSE-2.0
   8 #
   9 # Unless required by applicable law or agreed to in writing, software
  10 # distributed under the License is distributed on an "AS IS" BASIS,
  11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  12 # implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 # import logging
  17 from uuid import uuid4
  18 from http import HTTPStatus
  19 from time import time
  20 from copy import copy, deepcopy
  21 from validation import validate_input, ValidationError, ns_instantiate, ns_action, ns_scale, nsi_instantiate
  22 from base_topic import BaseTopic, EngineException, get_iterable
  23 # from descriptor_topics import DescriptorTopic
  24 from yaml import safe_dump
  25 from osm_common.dbbase import DbException
  26 from re import match  # For checking that additional parameter names are valid Jinja2 identifiers
  27
  28 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
  29
  30
  31 class NsrTopic(BaseTopic):
  32     topic = "nsrs"
  33     topic_msg = "ns"
  34
  35     def __init__(self, db, fs, msg):
  36         BaseTopic.__init__(self, db, fs, msg)
  37
  38     def _check_descriptor_dependencies(self, session, descriptor):
  39         """
  40         Check that the dependent descriptors exist on a new descriptor or edition
  41         :param session: client session information
  42         :param descriptor: descriptor to be inserted or edit
  43         :return: None or raises exception
  44         """
  45         if not descriptor.get("nsdId"):
  46             return
  47         nsd_id = descriptor["nsdId"]
  48         if not self.get_item_list(session, "nsds", {"id": nsd_id}):
  49             raise EngineException("Descriptor error at nsdId='{}' references a non exist nsd".format(nsd_id),
  50                                   http_code=HTTPStatus.CONFLICT)
  51
  52     @staticmethod
  53     def format_on_new(content, project_id=None, make_public=False):
  54         BaseTopic.format_on_new(content, project_id=project_id, make_public=make_public)
  55         content["_admin"]["nsState"] = "NOT_INSTANTIATED"
  56
  57     def check_conflict_on_del(self, session, _id, db_content):
  58         """
  59         Check that NSR is not instantiated
  60         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
  61         :param _id: nsr internal id
  62         :param db_content: The database content of the nsr
  63         :return: None or raises EngineException with the conflict
  64         """
  65         if session["force"]:
  66             return
  67         nsr = db_content
  68         if nsr["_admin"].get("nsState") == "INSTANTIATED":
  69             raise EngineException("nsr '{}' cannot be deleted because it is in 'INSTANTIATED' state. "
  70                                   "Launch 'terminate' operation first; or force deletion".format(_id),
  71                                   http_code=HTTPStatus.CONFLICT)
  72
  73     def delete_extra(self, session, _id, db_content):
  74         """
  75         Deletes associated nslcmops and vnfrs from database. Deletes associated filesystem.
  76          Set usageState of pdu, vnfd, nsd
  77         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
  78         :param _id: server internal id
  79         :param db_content: The database content of the descriptor
  80         :return: None if ok or raises EngineException with the problem
  81         """
  82         self.fs.file_delete(_id, ignore_non_exist=True)
  83         self.db.del_list("nslcmops", {"nsInstanceId": _id})
  84         self.db.del_list("vnfrs", {"nsr-id-ref": _id})
  85
  86         # set all used pdus as free
  87         self.db.set_list("pdus", {"_admin.usage.nsr_id": _id},
  88                          {"_admin.usageState": "NOT_IN_USE", "_admin.usage": None})
  89
  90         # Set NSD usageState
  91         nsr = db_content
  92         used_nsd_id = nsr.get("nsd-id")
  93         if used_nsd_id:
  94             # check if used by another NSR
  95             nsrs_list = self.db.get_one("nsrs", {"nsd-id": used_nsd_id},
  96                                         fail_on_empty=False, fail_on_more=False)
  97             if not nsrs_list:
  98                 self.db.set_one("nsds", {"_id": used_nsd_id}, {"_admin.usageState": "NOT_IN_USE"})
  99
 100         # Set VNFD usageState
 101         used_vnfd_id_list = nsr.get("vnfd-id")
 102         if used_vnfd_id_list:
 103             for used_vnfd_id in used_vnfd_id_list:
 104                 # check if used by another NSR
 105                 nsrs_list = self.db.get_one("nsrs", {"vnfd-id": used_vnfd_id},
 106                                             fail_on_empty=False, fail_on_more=False)
 107                 if not nsrs_list:
 108                     self.db.set_one("vnfds", {"_id": used_vnfd_id}, {"_admin.usageState": "NOT_IN_USE"})
 109
 110     @staticmethod
 111     def _format_ns_request(ns_request):
 112         formated_request = copy(ns_request)
 113         formated_request.pop("additionalParamsForNs", None)
 114         formated_request.pop("additionalParamsForVnf", None)
 115         return formated_request
 116
 117     @staticmethod
 118     def _format_addional_params(ns_request, member_vnf_index=None, descriptor=None):
 119         """
 120         Get and format user additional params for NS or VNF
 121         :param ns_request: User instantiation additional parameters
 122         :param member_vnf_index: None for extract NS params, or member_vnf_index to extract VNF params
 123         :param descriptor: If not None it check that needed parameters of descriptor are supplied
 124         :return: a formated copy of additional params or None if not supplied
 125         """
 126         additional_params = None
 127         if not member_vnf_index:
 128             additional_params = copy(ns_request.get("additionalParamsForNs"))
 129             where_ = "additionalParamsForNs"
 130         elif ns_request.get("additionalParamsForVnf"):
 131             for additionalParamsForVnf in get_iterable(ns_request.get("additionalParamsForVnf")):
 132                 if additionalParamsForVnf["member-vnf-index"] == member_vnf_index:
 133                     additional_params = copy(additionalParamsForVnf.get("additionalParams"))
 134                     where_ = "additionalParamsForVnf[member-vnf-index={}]".format(
 135                         additionalParamsForVnf["member-vnf-index"])
 136                     break
 137         if additional_params:
 138             for k, v in additional_params.items():
 139                 # BEGIN Check that additional parameter names are valid Jinja2 identifiers
 140                 if not match('^[a-zA-Z_][a-zA-Z0-9_]*$', k):
 141                     raise EngineException("Invalid param name at {}:{}. Must contain only alphanumeric characters "
 142                                           "and underscores, and cannot start with a digit"
 143                                           .format(where_, k))
 144                 # END Check that additional parameter names are valid Jinja2 identifiers
 145                 if not isinstance(k, str):
 146                     raise EngineException("Invalid param at {}:{}. Only string keys are allowed".format(where_, k))
 147                 if "." in k or "$" in k:
 148                     raise EngineException("Invalid param at {}:{}. Keys must not contain dots or $".format(where_, k))
 149                 if isinstance(v, (dict, tuple, list)):
 150                     additional_params[k] = "!!yaml " + safe_dump(v)
 151
 152         if descriptor:
 153             # check that enough parameters are supplied for the initial-config-primitive
 154             # TODO: check for cloud-init
 155             if member_vnf_index:
 156                 if descriptor.get("vnf-configuration"):
 157                     for initial_primitive in get_iterable(
 158                             descriptor["vnf-configuration"].get("initial-config-primitive")):
 159                         for param in get_iterable(initial_primitive.get("parameter")):
 160                             if param["value"].startswith("<") and param["value"].endswith(">"):
 161                                 if param["value"] in ("<rw_mgmt_ip>", "<VDU_SCALE_INFO>"):
 162                                     continue
 163                                 if not additional_params or param["value"][1:-1] not in additional_params:
 164                                     raise EngineException("Parameter '{}' needed for vnfd[id={}]:vnf-configuration:"
 165                                                           "initial-config-primitive[name={}] not supplied".
 166                                                           format(param["value"], descriptor["id"],
 167                                                                  initial_primitive["name"]))
 168
 169         return additional_params
 170
 171     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
 172         """
 173         Creates a new nsr into database. It also creates needed vnfrs
 174         :param rollback: list to append the created items at database in case a rollback must be done
 175         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 176         :param indata: params to be used for the nsr
 177         :param kwargs: used to override the indata descriptor
 178         :param headers: http request headers
 179         :return: the _id of nsr descriptor created at database
 180         """
 181
 182         try:
 183             ns_request = self._remove_envelop(indata)
 184             # Override descriptor with query string kwargs
 185             self._update_input_with_kwargs(ns_request, kwargs)
 186             self._validate_input_new(ns_request, session["force"])
 187
 188             # look for nsr
 189             step = "getting nsd id='{}' from database".format(ns_request.get("nsdId"))
 190             _filter = self._get_project_filter(session)
 191             _filter["_id"] = ns_request["nsdId"]
 192             nsd = self.db.get_one("nsds", _filter)
 193             del _filter["_id"]
 194
 195             nsr_id = str(uuid4())
 196
 197             now = time()
 198             step = "filling nsr from input data"
 199             nsr_descriptor = {
 200                 "name": ns_request["nsName"],
 201                 "name-ref": ns_request["nsName"],
 202                 "short-name": ns_request["nsName"],
 203                 "admin-status": "ENABLED",
 204                 "nsd": nsd,
 205                 "datacenter": ns_request["vimAccountId"],
 206                 "resource-orchestrator": "osmopenmano",
 207                 "description": ns_request.get("nsDescription", ""),
 208                 "constituent-vnfr-ref": [],
 209
 210                 "operational-status": "init",    # typedef ns-operational-
 211                 "config-status": "init",         # typedef config-states
 212                 "detailed-status": "scheduled",
 213
 214                 "orchestration-progress": {},
 215                 # {"networks": {"active": 0, "total": 0}, "vms": {"active": 0, "total": 0}},
 216
 217                 "create-time": now,
 218                 "nsd-name-ref": nsd["name"],
 219                 "operational-events": [],   # "id", "timestamp", "description", "event",
 220                 "nsd-ref": nsd["id"],
 221                 "nsd-id": nsd["_id"],
 222                 "vnfd-id": [],
 223                 "instantiate_params": self._format_ns_request(ns_request),
 224                 "additionalParamsForNs": self._format_addional_params(ns_request),
 225                 "ns-instance-config-ref": nsr_id,
 226                 "id": nsr_id,
 227                 "_id": nsr_id,
 228                 # "input-parameter": xpath, value,
 229                 "ssh-authorized-key": ns_request.get("key-pair-ref"),  # TODO remove
 230             }
 231             ns_request["nsr_id"] = nsr_id
 232             # Create vld
 233             if nsd.get("vld"):
 234                 nsr_descriptor["vld"] = []
 235                 for nsd_vld in nsd.get("vld"):
 236                     nsr_descriptor["vld"].append(
 237                         {key: nsd_vld[key] for key in ("id", "vim-network-name", "vim-network-id") if key in nsd_vld})
 238
 239             # Create VNFR
 240             needed_vnfds = {}
 241             for member_vnf in nsd.get("constituent-vnfd", ()):
 242                 vnfd_id = member_vnf["vnfd-id-ref"]
 243                 step = "getting vnfd id='{}' constituent-vnfd='{}' from database".format(
 244                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 245                 if vnfd_id not in needed_vnfds:
 246                     # Obtain vnfd
 247                     _filter["id"] = vnfd_id
 248                     vnfd = self.db.get_one("vnfds", _filter, fail_on_empty=True, fail_on_more=True)
 249                     del _filter["id"]
 250                     vnfd.pop("_admin")
 251                     needed_vnfds[vnfd_id] = vnfd
 252                     nsr_descriptor["vnfd-id"].append(vnfd["_id"])
 253                 else:
 254                     vnfd = needed_vnfds[vnfd_id]
 255                 step = "filling vnfr  vnfd-id='{}' constituent-vnfd='{}'".format(
 256                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 257                 vnfr_id = str(uuid4())
 258                 vnfr_descriptor = {
 259                     "id": vnfr_id,
 260                     "_id": vnfr_id,
 261                     "nsr-id-ref": nsr_id,
 262                     "member-vnf-index-ref": member_vnf["member-vnf-index"],
 263                     "additionalParamsForVnf": self._format_addional_params(ns_request, member_vnf["member-vnf-index"],
 264                                                                            vnfd),
 265                     "created-time": now,
 266                     # "vnfd": vnfd,        # at OSM model.but removed to avoid data duplication TODO: revise
 267                     "vnfd-ref": vnfd_id,
 268                     "vnfd-id": vnfd["_id"],    # not at OSM model, but useful
 269                     "vim-account-id": None,
 270                     "vdur": [],
 271                     "connection-point": [],
 272                     "ip-address": None,  # mgmt-interface filled by LCM
 273                 }
 274
 275                 # Create vld
 276                 if vnfd.get("internal-vld"):
 277                     vnfr_descriptor["vld"] = []
 278                     for vnfd_vld in vnfd.get("internal-vld"):
 279                         vnfr_descriptor["vld"].append(
 280                             {key: vnfd_vld[key] for key in ("id", "vim-network-name", "vim-network-id") if key in
 281                              vnfd_vld})
 282
 283                 vnfd_mgmt_cp = vnfd["mgmt-interface"].get("cp")
 284                 for cp in vnfd.get("connection-point", ()):
 285                     vnf_cp = {
 286                         "name": cp["name"],
 287                         "connection-point-id": cp.get("id"),
 288                         "id": cp.get("id"),
 289                         # "ip-address", "mac-address" # filled by LCM
 290                         # vim-id  # TODO it would be nice having a vim port id
 291                     }
 292                     vnfr_descriptor["connection-point"].append(vnf_cp)
 293                 for vdu in vnfd.get("vdu", ()):
 294                     vdur = {
 295                         "vdu-id-ref": vdu["id"],
 296                         # TODO      "name": ""     Name of the VDU in the VIM
 297                         "ip-address": None,  # mgmt-interface filled by LCM
 298                         # "vim-id", "flavor-id", "image-id", "management-ip" # filled by LCM
 299                         "internal-connection-point": [],
 300                         "interfaces": [],
 301                     }
 302                     if vdu.get("pdu-type"):
 303                         vdur["pdu-type"] = vdu["pdu-type"]
 304                     # TODO volumes: name, volume-id
 305                     for icp in vdu.get("internal-connection-point", ()):
 306                         vdu_icp = {
 307                             "id": icp["id"],
 308                             "connection-point-id": icp["id"],
 309                             "name": icp.get("name"),
 310                             # "ip-address", "mac-address" # filled by LCM
 311                             # vim-id  # TODO it would be nice having a vim port id
 312                         }
 313                         vdur["internal-connection-point"].append(vdu_icp)
 314                     for iface in vdu.get("interface", ()):
 315                         vdu_iface = {
 316                             "name": iface.get("name"),
 317                             # "ip-address", "mac-address" # filled by LCM
 318                             # vim-id  # TODO it would be nice having a vim port id
 319                         }
 320                         if vnfd_mgmt_cp and iface.get("external-connection-point-ref") == vnfd_mgmt_cp:
 321                             vdu_iface["mgmt-vnf"] = True
 322                         if iface.get("mgmt-interface"):
 323                             vdu_iface["mgmt-interface"] = True  # TODO change to mgmt-vdu
 324
 325                         # look for network where this interface is connected
 326                         if iface.get("external-connection-point-ref"):
 327                             for nsd_vld in get_iterable(nsd.get("vld")):
 328                                 for nsd_vld_cp in get_iterable(nsd_vld.get("vnfd-connection-point-ref")):
 329                                     if nsd_vld_cp.get("vnfd-connection-point-ref") == \
 330                                             iface["external-connection-point-ref"] and \
 331                                             nsd_vld_cp.get("member-vnf-index-ref") == member_vnf["member-vnf-index"]:
 332                                         vdu_iface["ns-vld-id"] = nsd_vld["id"]
 333                                         break
 334                                 else:
 335                                     continue
 336                                 break
 337                         elif iface.get("internal-connection-point-ref"):
 338                             for vnfd_ivld in get_iterable(vnfd.get("internal-vld")):
 339                                 for vnfd_ivld_icp in get_iterable(vnfd_ivld.get("internal-connection-point")):
 340                                     if vnfd_ivld_icp.get("id-ref") == iface["internal-connection-point-ref"]:
 341                                         vdu_iface["vnf-vld-id"] = vnfd_ivld["id"]
 342                                         break
 343                                 else:
 344                                     continue
 345                                 break
 346
 347                         vdur["interfaces"].append(vdu_iface)
 348                     count = vdu.get("count", 1)
 349                     if count is None:
 350                         count = 1
 351                     count = int(count)    # TODO remove when descriptor serialized with payngbind
 352                     for index in range(0, count):
 353                         if index:
 354                             vdur = deepcopy(vdur)
 355                         vdur["_id"] = str(uuid4())
 356                         vdur["count-index"] = index
 357                         vnfr_descriptor["vdur"].append(vdur)
 358
 359                 step = "creating vnfr vnfd-id='{}' constituent-vnfd='{}' at database".format(
 360                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 361
 362                 # add at database
 363                 BaseTopic.format_on_new(vnfr_descriptor, session["project_id"], make_public=session["public"])
 364                 self.db.create("vnfrs", vnfr_descriptor)
 365                 rollback.append({"topic": "vnfrs", "_id": vnfr_id})
 366                 nsr_descriptor["constituent-vnfr-ref"].append(vnfr_id)
 367
 368             step = "creating nsr at database"
 369             self.format_on_new(nsr_descriptor, session["project_id"], make_public=session["public"])
 370             self.db.create("nsrs", nsr_descriptor)
 371             rollback.append({"topic": "nsrs", "_id": nsr_id})
 372
 373             step = "creating nsr temporal folder"
 374             self.fs.mkdir(nsr_id)
 375
 376             return nsr_id
 377         except Exception as e:
 378             self.logger.exception("Exception {} at NsrTopic.new()".format(e), exc_info=True)
 379             raise EngineException("Error {}: {}".format(step, e))
 380         except ValidationError as e:
 381             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
 382
 383     def edit(self, session, _id, indata=None, kwargs=None, content=None):
 384         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 385
 386
 387 class VnfrTopic(BaseTopic):
 388     topic = "vnfrs"
 389     topic_msg = None
 390
 391     def __init__(self, db, fs, msg):
 392         BaseTopic.__init__(self, db, fs, msg)
 393
 394     def delete(self, session, _id, dry_run=False):
 395         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 396
 397     def edit(self, session, _id, indata=None, kwargs=None, content=None):
 398         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 399
 400     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
 401         # Not used because vnfrs are created and deleted by NsrTopic class directly
 402         raise EngineException("Method new called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 403
 404
 405 class NsLcmOpTopic(BaseTopic):
 406     topic = "nslcmops"
 407     topic_msg = "ns"
 408     operation_schema = {    # mapping between operation and jsonschema to validate
 409         "instantiate": ns_instantiate,
 410         "action": ns_action,
 411         "scale": ns_scale,
 412         "terminate": None,
 413     }
 414
 415     def __init__(self, db, fs, msg):
 416         BaseTopic.__init__(self, db, fs, msg)
 417
 418     def _check_ns_operation(self, session, nsr, operation, indata):
 419         """
 420         Check that user has enter right parameters for the operation
 421         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 422         :param operation: it can be: instantiate, terminate, action, TODO: update, heal
 423         :param indata: descriptor with the parameters of the operation
 424         :return: None
 425         """
 426         vnfds = {}
 427         vim_accounts = []
 428         wim_accounts = []
 429         nsd = nsr["nsd"]
 430
 431         def check_valid_vnf_member_index(member_vnf_index):
 432             # TODO change to vnfR
 433             for vnf in nsd["constituent-vnfd"]:
 434                 if member_vnf_index == vnf["member-vnf-index"]:
 435                     vnfd_id = vnf["vnfd-id-ref"]
 436                     if vnfd_id not in vnfds:
 437                         vnfds[vnfd_id] = self.db.get_one("vnfds", {"id": vnfd_id})
 438                     return vnfds[vnfd_id]
 439             else:
 440                 raise EngineException("Invalid parameter member_vnf_index='{}' is not one of the "
 441                                       "nsd:constituent-vnfd".format(member_vnf_index))
 442
 443         def _check_vnf_instantiation_params(in_vnfd, vnfd):
 444
 445             for in_vdu in get_iterable(in_vnfd.get("vdu")):
 446                 for vdu in get_iterable(vnfd.get("vdu")):
 447                     if in_vdu["id"] == vdu["id"]:
 448                         for volume in get_iterable(in_vdu.get("volume")):
 449                             for volumed in get_iterable(vdu.get("volumes")):
 450                                 if volumed["name"] == volume["name"]:
 451                                     break
 452                             else:
 453                                 raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:vdu[id='{}']:"
 454                                                       "volume:name='{}' is not present at vnfd:vdu:volumes list".
 455                                                       format(in_vnf["member-vnf-index"], in_vdu["id"],
 456                                                              volume["name"]))
 457                         for in_iface in get_iterable(in_vdu["interface"]):
 458                             for iface in get_iterable(vdu.get("interface")):
 459                                 if in_iface["name"] == iface["name"]:
 460                                     break
 461                             else:
 462                                 raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:vdu[id='{}']:"
 463                                                       "interface[name='{}'] is not present at vnfd:vdu:interface"
 464                                                       .format(in_vnf["member-vnf-index"], in_vdu["id"],
 465                                                               in_iface["name"]))
 466                         break
 467                 else:
 468                     raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:vdu[id='{}'] is is not present "
 469                                           "at vnfd:vdu".format(in_vnf["member-vnf-index"], in_vdu["id"]))
 470
 471             for in_ivld in get_iterable(in_vnfd.get("internal-vld")):
 472                 for ivld in get_iterable(vnfd.get("internal-vld")):
 473                     if in_ivld["name"] == ivld["name"] or in_ivld["name"] == ivld["id"]:
 474                         for in_icp in get_iterable(in_ivld["internal-connection-point"]):
 475                             for icp in ivld["internal-connection-point"]:
 476                                 if in_icp["id-ref"] == icp["id-ref"]:
 477                                     break
 478                             else:
 479                                 raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:internal-vld[name"
 480                                                       "='{}']:internal-connection-point[id-ref:'{}'] is not present at "
 481                                                       "vnfd:internal-vld:name/id:internal-connection-point"
 482                                                       .format(in_vnf["member-vnf-index"], in_ivld["name"],
 483                                                               in_icp["id-ref"], vnfd["id"]))
 484                         break
 485                 else:
 486                     raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:internal-vld:name='{}'"
 487                                           " is not present at vnfd '{}'".format(in_vnf["member-vnf-index"],
 488                                                                                 in_ivld["name"], vnfd["id"]))
 489
 490         def check_valid_vim_account(vim_account):
 491             if vim_account in vim_accounts:
 492                 return
 493             try:
 494                 db_filter = self._get_project_filter(session)
 495                 db_filter["_id"] = vim_account
 496                 self.db.get_one("vim_accounts", db_filter)
 497             except Exception:
 498                 raise EngineException("Invalid vimAccountId='{}' not present for the project".format(vim_account))
 499             vim_accounts.append(vim_account)
 500
 501         def check_valid_wim_account(wim_account):
 502             if not isinstance(wim_account, str):
 503                 return
 504             elif wim_account in wim_accounts:
 505                 return
 506             try:
 507                 db_filter = self._get_project_filter(session, write=False, show_all=True)
 508                 db_filter["_id"] = wim_account
 509                 self.db.get_one("wim_accounts", db_filter)
 510             except Exception:
 511                 raise EngineException("Invalid wimAccountId='{}' not present for the project".format(wim_account))
 512             wim_accounts.append(wim_account)
 513
 514         if operation == "action":
 515             # check vnf_member_index
 516             if indata.get("vnf_member_index"):
 517                 indata["member_vnf_index"] = indata.pop("vnf_member_index")    # for backward compatibility
 518             if not indata.get("member_vnf_index"):
 519                 raise EngineException("Missing 'member_vnf_index' parameter")
 520             vnfd = check_valid_vnf_member_index(indata["member_vnf_index"])
 521             # check primitive
 522             for config_primitive in get_iterable(vnfd.get("vnf-configuration", {}).get("config-primitive")):
 523                 if indata["primitive"] == config_primitive["name"]:
 524                     # check needed primitive_params are provided
 525                     if indata.get("primitive_params"):
 526                         in_primitive_params_copy = copy(indata["primitive_params"])
 527                     else:
 528                         in_primitive_params_copy = {}
 529                     for paramd in get_iterable(config_primitive.get("parameter")):
 530                         if paramd["name"] in in_primitive_params_copy:
 531                             del in_primitive_params_copy[paramd["name"]]
 532                         elif not paramd.get("default-value"):
 533                             raise EngineException("Needed parameter {} not provided for primitive '{}'".format(
 534                                 paramd["name"], indata["primitive"]))
 535                     # check no extra primitive params are provided
 536                     if in_primitive_params_copy:
 537                         raise EngineException("parameter/s '{}' not present at vnfd for primitive '{}'".format(
 538                             list(in_primitive_params_copy.keys()), indata["primitive"]))
 539                     break
 540             else:
 541                 raise EngineException("Invalid primitive '{}' is not present at vnfd".format(indata["primitive"]))
 542         if operation == "scale":
 543             vnfd = check_valid_vnf_member_index(indata["scaleVnfData"]["scaleByStepData"]["member-vnf-index"])
 544             for scaling_group in get_iterable(vnfd.get("scaling-group-descriptor")):
 545                 if indata["scaleVnfData"]["scaleByStepData"]["scaling-group-descriptor"] == scaling_group["name"]:
 546                     break
 547             else:
 548                 raise EngineException("Invalid scaleVnfData:scaleByStepData:scaling-group-descriptor '{}' is not "
 549                                       "present at vnfd:scaling-group-descriptor".format(
 550                                           indata["scaleVnfData"]["scaleByStepData"]["scaling-group-descriptor"]))
 551         if operation == "instantiate":
 552             # check vim_account
 553             check_valid_vim_account(indata["vimAccountId"])
 554             check_valid_wim_account(indata.get("wimAccountId"))
 555             for in_vnf in get_iterable(indata.get("vnf")):
 556                 vnfd = check_valid_vnf_member_index(in_vnf["member-vnf-index"])
 557                 _check_vnf_instantiation_params(in_vnf, vnfd)
 558                 if in_vnf.get("vimAccountId"):
 559                     check_valid_vim_account(in_vnf["vimAccountId"])
 560
 561             for in_vld in get_iterable(indata.get("vld")):
 562                 check_valid_wim_account(in_vld.get("wimAccountId"))
 563                 for vldd in get_iterable(nsd.get("vld")):
 564                     if in_vld["name"] == vldd["name"] or in_vld["name"] == vldd["id"]:
 565                         break
 566                 else:
 567                     raise EngineException("Invalid parameter vld:name='{}' is not present at nsd:vld".format(
 568                         in_vld["name"]))
 569
 570     def _look_for_pdu(self, session, rollback, vnfr, vim_account, vnfr_update, vnfr_update_rollback):
 571         """
 572         Look for a free PDU in the catalog matching vdur type and interfaces. Fills vnfr.vdur with the interface
 573         (ip_address, ...) information.
 574         Modifies PDU _admin.usageState to 'IN_USE'
 575
 576         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 577         :param rollback: list with the database modifications to rollback if needed
 578         :param vnfr: vnfr to be updated. It is modified with pdu interface info if pdu is found
 579         :param vim_account: vim_account where this vnfr should be deployed
 580         :param vnfr_update: dictionary filled by this method with changes to be done at database vnfr
 581         :param vnfr_update_rollback: dictionary filled by this method with original content of vnfr in case a rollback
 582                                      of the changed vnfr is needed
 583
 584         :return: List of PDU interfaces that are connected to an existing VIM network. Each item contains:
 585                  "vim-network-name": used at VIM
 586                   "name": interface name
 587                   "vnf-vld-id": internal VNFD vld where this interface is connected, or
 588                   "ns-vld-id": NSD vld where this interface is connected.
 589                   NOTE: One, and only one between 'vnf-vld-id' and 'ns-vld-id' contains a value. The other will be None
 590         """
 591
 592         ifaces_forcing_vim_network = []
 593         for vdur_index, vdur in enumerate(get_iterable(vnfr.get("vdur"))):
 594             if not vdur.get("pdu-type"):
 595                 continue
 596             pdu_type = vdur.get("pdu-type")
 597             pdu_filter = self._get_project_filter(session)
 598             pdu_filter["vim_accounts"] = vim_account
 599             pdu_filter["type"] = pdu_type
 600             pdu_filter["_admin.operationalState"] = "ENABLED"
 601             pdu_filter["_admin.usageState"] = "NOT_IN_USE"
 602             # TODO feature 1417: "shared": True,
 603
 604             available_pdus = self.db.get_list("pdus", pdu_filter)
 605             for pdu in available_pdus:
 606                 # step 1 check if this pdu contains needed interfaces:
 607                 match_interfaces = True
 608                 for vdur_interface in vdur["interfaces"]:
 609                     for pdu_interface in pdu["interfaces"]:
 610                         if pdu_interface["name"] == vdur_interface["name"]:
 611                             # TODO feature 1417: match per mgmt type
 612                             break
 613                     else:  # no interface found for name
 614                         match_interfaces = False
 615                         break
 616                 if match_interfaces:
 617                     break
 618             else:
 619                 raise EngineException(
 620                     "No PDU of type={} at vim_account={} found for member_vnf_index={}, vdu={} matching interface "
 621                     "names".format(pdu_type, vim_account, vnfr["member-vnf-index-ref"], vdur["vdu-id-ref"]))
 622
 623             # step 2. Update pdu
 624             rollback_pdu = {
 625                 "_admin.usageState": pdu["_admin"]["usageState"],
 626                 "_admin.usage.vnfr_id": None,
 627                 "_admin.usage.nsr_id": None,
 628                 "_admin.usage.vdur": None,
 629             }
 630             self.db.set_one("pdus", {"_id": pdu["_id"]},
 631                             {"_admin.usageState": "IN_USE",
 632                              "_admin.usage": {"vnfr_id": vnfr["_id"],
 633                                               "nsr_id": vnfr["nsr-id-ref"],
 634                                               "vdur": vdur["vdu-id-ref"]}
 635                              })
 636             rollback.append({"topic": "pdus", "_id": pdu["_id"], "operation": "set", "content": rollback_pdu})
 637
 638             # step 3. Fill vnfr info by filling vdur
 639             vdu_text = "vdur.{}".format(vdur_index)
 640             vnfr_update_rollback[vdu_text + ".pdu-id"] = None
 641             vnfr_update[vdu_text + ".pdu-id"] = pdu["_id"]
 642             for iface_index, vdur_interface in enumerate(vdur["interfaces"]):
 643                 for pdu_interface in pdu["interfaces"]:
 644                     if pdu_interface["name"] == vdur_interface["name"]:
 645                         iface_text = vdu_text + ".interfaces.{}".format(iface_index)
 646                         for k, v in pdu_interface.items():
 647                             if k in ("ip-address", "mac-address"):  # TODO: switch-xxxxx must be inserted
 648                                 vnfr_update[iface_text + ".{}".format(k)] = v
 649                                 vnfr_update_rollback[iface_text + ".{}".format(k)] = vdur_interface.get(v)
 650                         if pdu_interface.get("ip-address"):
 651                             if vdur_interface.get("mgmt-interface"):
 652                                 vnfr_update_rollback[vdu_text + ".ip-address"] = vdur.get("ip-address")
 653                                 vnfr_update[vdu_text + ".ip-address"] = pdu_interface["ip-address"]
 654                             if vdur_interface.get("mgmt-vnf"):
 655                                 vnfr_update_rollback["ip-address"] = vnfr.get("ip-address")
 656                                 vnfr_update["ip-address"] = pdu_interface["ip-address"]
 657                         if pdu_interface.get("vim-network-name") or pdu_interface.get("vim-network-id"):
 658                             ifaces_forcing_vim_network.append({
 659                                 "name": vdur_interface.get("vnf-vld-id") or vdur_interface.get("ns-vld-id"),
 660                                 "vnf-vld-id": vdur_interface.get("vnf-vld-id"),
 661                                 "ns-vld-id": vdur_interface.get("ns-vld-id")})
 662                             if pdu_interface.get("vim-network-id"):
 663                                 ifaces_forcing_vim_network.append({
 664                                     "vim-network-id": pdu_interface.get("vim-network-id")})
 665                             if pdu_interface.get("vim-network-name"):
 666                                 ifaces_forcing_vim_network.append({
 667                                     "vim-network-name": pdu_interface.get("vim-network-name")})
 668                         break
 669
 670         return ifaces_forcing_vim_network
 671
 672     def _update_vnfrs(self, session, rollback, nsr, indata):
 673         vnfrs = None
 674         # get vnfr
 675         nsr_id = nsr["_id"]
 676         vnfrs = self.db.get_list("vnfrs", {"nsr-id-ref": nsr_id})
 677
 678         for vnfr in vnfrs:
 679             vnfr_update = {}
 680             vnfr_update_rollback = {}
 681             member_vnf_index = vnfr["member-vnf-index-ref"]
 682             # update vim-account-id
 683
 684             vim_account = indata["vimAccountId"]
 685             # check instantiate parameters
 686             for vnf_inst_params in get_iterable(indata.get("vnf")):
 687                 if vnf_inst_params["member-vnf-index"] != member_vnf_index:
 688                     continue
 689                 if vnf_inst_params.get("vimAccountId"):
 690                     vim_account = vnf_inst_params.get("vimAccountId")
 691
 692             vnfr_update["vim-account-id"] = vim_account
 693             vnfr_update_rollback["vim-account-id"] = vnfr.get("vim-account-id")
 694
 695             # get pdu
 696             ifaces_forcing_vim_network = self._look_for_pdu(session, rollback, vnfr, vim_account, vnfr_update,
 697                                                             vnfr_update_rollback)
 698
 699             # updata database vnfr
 700             self.db.set_one("vnfrs", {"_id": vnfr["_id"]}, vnfr_update)
 701             rollback.append({"topic": "vnfrs", "_id": vnfr["_id"], "operation": "set", "content": vnfr_update_rollback})
 702
 703             # Update indada in case pdu forces to use a concrete vim-network-name
 704             # TODO check if user has already insert a vim-network-name and raises an error
 705             if not ifaces_forcing_vim_network:
 706                 continue
 707             for iface_info in ifaces_forcing_vim_network:
 708                 if iface_info.get("ns-vld-id"):
 709                     if "vld" not in indata:
 710                         indata["vld"] = []
 711                     indata["vld"].append({key: iface_info[key] for key in
 712                                           ("name", "vim-network-name", "vim-network-id") if iface_info.get(key)})
 713
 714                 elif iface_info.get("vnf-vld-id"):
 715                     if "vnf" not in indata:
 716                         indata["vnf"] = []
 717                     indata["vnf"].append({
 718                         "member-vnf-index": member_vnf_index,
 719                         "internal-vld": [{key: iface_info[key] for key in
 720                                           ("name", "vim-network-name", "vim-network-id") if iface_info.get(key)}]
 721                     })
 722
 723     @staticmethod
 724     def _create_nslcmop(nsr_id, operation, params):
 725         """
 726         Creates a ns-lcm-opp content to be stored at database.
 727         :param nsr_id: internal id of the instance
 728         :param operation: instantiate, terminate, scale, action, ...
 729         :param params: user parameters for the operation
 730         :return: dictionary following SOL005 format
 731         """
 732         now = time()
 733         _id = str(uuid4())
 734         nslcmop = {
 735             "id": _id,
 736             "_id": _id,
 737             "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
 738             "statusEnteredTime": now,
 739             "nsInstanceId": nsr_id,
 740             "lcmOperationType": operation,
 741             "startTime": now,
 742             "isAutomaticInvocation": False,
 743             "operationParams": params,
 744             "isCancelPending": False,
 745             "links": {
 746                 "self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id,
 747                 "nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id,
 748             }
 749         }
 750         return nslcmop
 751
 752     def new(self, rollback, session, indata=None, kwargs=None, headers=None, slice_object=False):
 753         """
 754         Performs a new operation over a ns
 755         :param rollback: list to append created items at database in case a rollback must to be done
 756         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 757         :param indata: descriptor with the parameters of the operation. It must contains among others
 758             nsInstanceId: _id of the nsr to perform the operation
 759             operation: it can be: instantiate, terminate, action, TODO: update, heal
 760         :param kwargs: used to override the indata descriptor
 761         :param headers: http request headers
 762         :return: id of the nslcmops
 763         """
 764         try:
 765             # Override descriptor with query string kwargs
 766             self._update_input_with_kwargs(indata, kwargs)
 767             operation = indata["lcmOperationType"]
 768             nsInstanceId = indata["nsInstanceId"]
 769
 770             validate_input(indata, self.operation_schema[operation])
 771             # get ns from nsr_id
 772             _filter = BaseTopic._get_project_filter(session)
 773             _filter["_id"] = nsInstanceId
 774             nsr = self.db.get_one("nsrs", _filter)
 775
 776             # initial checking
 777             if not nsr["_admin"].get("nsState") or nsr["_admin"]["nsState"] == "NOT_INSTANTIATED":
 778                 if operation == "terminate" and indata.get("autoremove"):
 779                     # NSR must be deleted
 780                     return None    # a none in this case is used to indicate not instantiated. It can be removed
 781                 if operation != "instantiate":
 782                     raise EngineException("ns_instance '{}' cannot be '{}' because it is not instantiated".format(
 783                         nsInstanceId, operation), HTTPStatus.CONFLICT)
 784             else:
 785                 if operation == "instantiate" and not session["force"]:
 786                     raise EngineException("ns_instance '{}' cannot be '{}' because it is already instantiated".format(
 787                         nsInstanceId, operation), HTTPStatus.CONFLICT)
 788             self._check_ns_operation(session, nsr, operation, indata)
 789
 790             if operation == "instantiate":
 791                 self._update_vnfrs(session, rollback, nsr, indata)
 792
 793             nslcmop_desc = self._create_nslcmop(nsInstanceId, operation, indata)
 794             self.format_on_new(nslcmop_desc, session["project_id"], make_public=session["public"])
 795             _id = self.db.create("nslcmops", nslcmop_desc)
 796             rollback.append({"topic": "nslcmops", "_id": _id})
 797             if not slice_object:
 798                 self.msg.write("ns", operation, nslcmop_desc)
 799             return _id
 800         except ValidationError as e:
 801             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
 802         # except DbException as e:
 803         #     raise EngineException("Cannot get ns_instance '{}': {}".format(e), HTTPStatus.NOT_FOUND)
 804
 805     def delete(self, session, _id, dry_run=False):
 806         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 807
 808     def edit(self, session, _id, indata=None, kwargs=None, content=None):
 809         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 810
 811
 812 class NsiTopic(BaseTopic):
 813     topic = "nsis"
 814     topic_msg = "nsi"
 815
 816     def __init__(self, db, fs, msg):
 817         BaseTopic.__init__(self, db, fs, msg)
 818         self.nsrTopic = NsrTopic(db, fs, msg)
 819
 820     @staticmethod
 821     def _format_ns_request(ns_request):
 822         formated_request = copy(ns_request)
 823         # TODO: Add request params
 824         return formated_request
 825
 826     @staticmethod
 827     def _format_addional_params(slice_request):
 828         """
 829         Get and format user additional params for NS or VNF
 830         :param slice_request: User instantiation additional parameters
 831         :return: a formatted copy of additional params or None if not supplied
 832         """
 833         additional_params = copy(slice_request.get("additionalParamsForNsi"))
 834         if additional_params:
 835             for k, v in additional_params.items():
 836                 if not isinstance(k, str):
 837                     raise EngineException("Invalid param at additionalParamsForNsi:{}. Only string keys are allowed".
 838                                           format(k))
 839                 if "." in k or "$" in k:
 840                     raise EngineException("Invalid param at additionalParamsForNsi:{}. Keys must not contain dots or $".
 841                                           format(k))
 842                 if isinstance(v, (dict, tuple, list)):
 843                     additional_params[k] = "!!yaml " + safe_dump(v)
 844         return additional_params
 845
 846     def _check_descriptor_dependencies(self, session, descriptor):
 847         """
 848         Check that the dependent descriptors exist on a new descriptor or edition
 849         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 850         :param descriptor: descriptor to be inserted or edit
 851         :return: None or raises exception
 852         """
 853         if not descriptor.get("nst-ref"):
 854             return
 855         nstd_id = descriptor["nst-ref"]
 856         if not self.get_item_list(session, "nsts", {"id": nstd_id}):
 857             raise EngineException("Descriptor error at nst-ref='{}' references a non exist nstd".format(nstd_id),
 858                                   http_code=HTTPStatus.CONFLICT)
 859
 860     def check_conflict_on_del(self, session, _id, db_content):
 861         """
 862         Check that NSI is not instantiated
 863         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 864         :param _id: nsi internal id
 865         :param db_content: The database content of the _id
 866         :return: None or raises EngineException with the conflict
 867         """
 868         if session["force"]:
 869             return
 870         nsi = db_content
 871         if nsi["_admin"].get("nsiState") == "INSTANTIATED":
 872             raise EngineException("nsi '{}' cannot be deleted because it is in 'INSTANTIATED' state. "
 873                                   "Launch 'terminate' operation first; or force deletion".format(_id),
 874                                   http_code=HTTPStatus.CONFLICT)
 875
 876     def delete_extra(self, session, _id, db_content):
 877         """
 878         Deletes associated nsilcmops from database. Deletes associated filesystem.
 879          Set usageState of nst
 880         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 881         :param _id: server internal id
 882         :param db_content: The database content of the descriptor
 883         :return: None if ok or raises EngineException with the problem
 884         """
 885
 886         # Deleting the nsrs belonging to nsir
 887         nsir = db_content
 888         for nsrs_detailed_item in nsir["_admin"]["nsrs-detailed-list"]:
 889             nsr_id = nsrs_detailed_item["nsrId"]
 890             if nsrs_detailed_item.get("shared"):
 891                 _filter = {"_admin.nsrs-detailed-list.ANYINDEX.shared": True,
 892                            "_admin.nsrs-detailed-list.ANYINDEX.nsrId": nsr_id,
 893                            "_id.ne": nsir["_id"]}
 894                 nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
 895                 if nsi:  # last one using nsr
 896                     continue
 897             try:
 898                 self.nsrTopic.delete(session, nsr_id, dry_run=False)
 899             except (DbException, EngineException) as e:
 900                 if e.http_code == HTTPStatus.NOT_FOUND:
 901                     pass
 902                 else:
 903                     raise
 904
 905         # delete related nsilcmops database entries
 906         self.db.del_list("nsilcmops", {"netsliceInstanceId": _id})
 907
 908         # Check and set used NST usage state
 909         nsir_admin = nsir.get("_admin")
 910         if nsir_admin and nsir_admin.get("nst-id"):
 911             # check if used by another NSI
 912             nsis_list = self.db.get_one("nsis", {"nst-id": nsir_admin["nst-id"]},
 913                                         fail_on_empty=False, fail_on_more=False)
 914             if not nsis_list:
 915                 self.db.set_one("nsts", {"_id": nsir_admin["nst-id"]}, {"_admin.usageState": "NOT_IN_USE"})
 916
 917     # def delete(self, session, _id, dry_run=False):
 918     #     """
 919     #     Delete item by its internal _id
 920     #     :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 921     #     :param _id: server internal id
 922     #     :param dry_run: make checking but do not delete
 923     #     :return: dictionary with deleted item _id. It raises EngineException on error: not found, conflict, ...
 924     #     """
 925     #     # TODO add admin to filter, validate rights
 926     #     BaseTopic.delete(self, session, _id, dry_run=True)
 927     #     if dry_run:
 928     #         return
 929     #
 930     #     # Deleting the nsrs belonging to nsir
 931     #     nsir = self.db.get_one("nsis", {"_id": _id})
 932     #     for nsrs_detailed_item in nsir["_admin"]["nsrs-detailed-list"]:
 933     #         nsr_id = nsrs_detailed_item["nsrId"]
 934     #         if nsrs_detailed_item.get("shared"):
 935     #             _filter = {"_admin.nsrs-detailed-list.ANYINDEX.shared": True,
 936     #                        "_admin.nsrs-detailed-list.ANYINDEX.nsrId": nsr_id,
 937     #                        "_id.ne": nsir["_id"]}
 938     #             nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
 939     #             if nsi:  # last one using nsr
 940     #                 continue
 941     #         try:
 942     #             self.nsrTopic.delete(session, nsr_id, dry_run=False)
 943     #         except (DbException, EngineException) as e:
 944     #             if e.http_code == HTTPStatus.NOT_FOUND:
 945     #                 pass
 946     #             else:
 947     #                 raise
 948     #     # deletes NetSlice instance object
 949     #     v = self.db.del_one("nsis", {"_id": _id})
 950     #
 951     #     # makes a temporal list of nsilcmops objects related to the _id given and deletes them from db
 952     #     _filter = {"netsliceInstanceId": _id}
 953     #     self.db.del_list("nsilcmops", _filter)
 954     #
 955     #     # Search if nst is being used by other nsi
 956     #     nsir_admin = nsir.get("_admin")
 957     #     if nsir_admin:
 958     #         if nsir_admin.get("nst-id"):
 959     #             nsis_list = self.db.get_one("nsis", {"nst-id": nsir_admin["nst-id"]},
 960     #                                         fail_on_empty=False, fail_on_more=False)
 961     #             if not nsis_list:
 962     #                 self.db.set_one("nsts", {"_id": nsir_admin["nst-id"]}, {"_admin.usageState": "NOT_IN_USE"})
 963     #     return v
 964
 965     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
 966         """
 967         Creates a new netslice instance record into database. It also creates needed nsrs and vnfrs
 968         :param rollback: list to append the created items at database in case a rollback must be done
 969         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 970         :param indata: params to be used for the nsir
 971         :param kwargs: used to override the indata descriptor
 972         :param headers: http request headers
 973         :return: the _id of nsi descriptor created at database
 974         """
 975
 976         try:
 977             slice_request = self._remove_envelop(indata)
 978             # Override descriptor with query string kwargs
 979             self._update_input_with_kwargs(slice_request, kwargs)
 980             self._validate_input_new(slice_request, session["force"])
 981
 982             step = ""
 983             # look for nstd
 984             step = "getting nstd id='{}' from database".format(slice_request.get("nstId"))
 985             _filter = self._get_project_filter(session)
 986             _filter["_id"] = slice_request["nstId"]
 987             nstd = self.db.get_one("nsts", _filter)
 988             del _filter["_id"]
 989
 990             nstd.pop("_admin", None)
 991             nstd_id = nstd.pop("_id", None)
 992             nsi_id = str(uuid4())
 993             step = "filling nsi_descriptor with input data"
 994
 995             # Creating the NSIR
 996             nsi_descriptor = {
 997                 "id": nsi_id,
 998                 "name": slice_request["nsiName"],
 999                 "description": slice_request.get("nsiDescription", ""),
1000                 "datacenter": slice_request["vimAccountId"],
1001                 "nst-ref": nstd["id"],
1002                 "instantiation_parameters": slice_request,
1003                 "network-slice-template": nstd,
1004                 "nsr-ref-list": [],
1005                 "vlr-list": [],
1006                 "_id": nsi_id,
1007                 "additionalParamsForNsi": self._format_addional_params(slice_request)
1008             }
1009
1010             step = "creating nsi at database"
1011             self.format_on_new(nsi_descriptor, session["project_id"], make_public=session["public"])
1012             nsi_descriptor["_admin"]["nsiState"] = "NOT_INSTANTIATED"
1013             nsi_descriptor["_admin"]["netslice-subnet"] = None
1014             nsi_descriptor["_admin"]["deployed"] = {}
1015             nsi_descriptor["_admin"]["deployed"]["RO"] = []
1016             nsi_descriptor["_admin"]["nst-id"] = nstd_id
1017
1018             # Creating netslice-vld for the RO.
1019             step = "creating netslice-vld at database"
1020
1021             # Building the vlds list to be deployed
1022             # From netslice descriptors, creating the initial list
1023             nsi_vlds = []
1024
1025             for netslice_vlds in get_iterable(nstd.get("netslice-vld")):
1026                 # Getting template Instantiation parameters from NST
1027                 nsi_vld = deepcopy(netslice_vlds)
1028                 nsi_vld["shared-nsrs-list"] = []
1029                 nsi_vld["vimAccountId"] = slice_request["vimAccountId"]
1030                 nsi_vlds.append(nsi_vld)
1031
1032             nsi_descriptor["_admin"]["netslice-vld"] = nsi_vlds
1033             # Creating netslice-subnet_record.
1034             needed_nsds = {}
1035             services = []
1036
1037             # Updating the nstd with the nsd["_id"] associated to the nss -> services list
1038             for member_ns in nstd["netslice-subnet"]:
1039                 nsd_id = member_ns["nsd-ref"]
1040                 step = "getting nstd id='{}' constituent-nsd='{}' from database".format(
1041                     member_ns["nsd-ref"], member_ns["id"])
1042                 if nsd_id not in needed_nsds:
1043                     # Obtain nsd
1044                     _filter["id"] = nsd_id
1045                     nsd = self.db.get_one("nsds", _filter, fail_on_empty=True, fail_on_more=True)
1046                     del _filter["id"]
1047                     nsd.pop("_admin")
1048                     needed_nsds[nsd_id] = nsd
1049                 else:
1050                     nsd = needed_nsds[nsd_id]
1051                 member_ns["_id"] = needed_nsds[nsd_id].get("_id")
1052                 services.append(member_ns)
1053
1054                 step = "filling nsir nsd-id='{}' constituent-nsd='{}' from database".format(
1055                     member_ns["nsd-ref"], member_ns["id"])
1056
1057             # creates Network Services records (NSRs)
1058             step = "creating nsrs at database using NsrTopic.new()"
1059             ns_params = slice_request.get("netslice-subnet")
1060             nsrs_list = []
1061             nsi_netslice_subnet = []
1062             for service in services:
1063                 # Check if the netslice-subnet is shared and if it is share if the nss exists
1064                 _id_nsr = None
1065                 indata_ns = {}
1066                 # Is the nss shared and instantiated?
1067                 _filter["_admin.nsrs-detailed-list.ANYINDEX.shared"] = True
1068                 _filter["_admin.nsrs-detailed-list.ANYINDEX.nsd-id"] = service["nsd-ref"]
1069                 nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
1070
1071                 if nsi and service.get("is-shared-nss"):
1072                     nsrs_detailed_list = nsi["_admin"]["nsrs-detailed-list"]
1073                     for nsrs_detailed_item in nsrs_detailed_list:
1074                         if nsrs_detailed_item["nsd-id"] == service["nsd-ref"]:
1075                             _id_nsr = nsrs_detailed_item["nsrId"]
1076                             break
1077                     for netslice_subnet in nsi["_admin"]["netslice-subnet"]:
1078                         if netslice_subnet["nss-id"] == service["id"]:
1079                             indata_ns = netslice_subnet
1080                             break
1081                 else:
1082                     indata_ns = {}
1083                     if service.get("instantiation-parameters"):
1084                         indata_ns = deepcopy(service["instantiation-parameters"])
1085                         # del service["instantiation-parameters"]
1086
1087                     indata_ns["nsdId"] = service["_id"]
1088                     indata_ns["nsName"] = slice_request.get("nsiName") + "." + service["id"]
1089                     indata_ns["vimAccountId"] = slice_request.get("vimAccountId")
1090                     indata_ns["nsDescription"] = service["description"]
1091                     indata_ns["key-pair-ref"] = slice_request.get("key-pair-ref")
1092
1093                     if ns_params:
1094                         for ns_param in ns_params:
1095                             if ns_param.get("id") == service["id"]:
1096                                 copy_ns_param = deepcopy(ns_param)
1097                                 del copy_ns_param["id"]
1098                                 indata_ns.update(copy_ns_param)
1099                                 break
1100
1101                     # Creates Nsr objects
1102                     _id_nsr = self.nsrTopic.new(rollback, session, indata_ns, kwargs, headers)
1103                 nsrs_item = {"nsrId": _id_nsr, "shared": service.get("is-shared-nss"), "nsd-id": service["nsd-ref"],
1104                              "nslcmop_instantiate": None}
1105                 indata_ns["nss-id"] = service["id"]
1106                 nsrs_list.append(nsrs_item)
1107                 nsi_netslice_subnet.append(indata_ns)
1108                 nsr_ref = {"nsr-ref": _id_nsr}
1109                 nsi_descriptor["nsr-ref-list"].append(nsr_ref)
1110
1111             # Adding the nsrs list to the nsi
1112             nsi_descriptor["_admin"]["nsrs-detailed-list"] = nsrs_list
1113             nsi_descriptor["_admin"]["netslice-subnet"] = nsi_netslice_subnet
1114             self.db.set_one("nsts", {"_id": slice_request["nstId"]}, {"_admin.usageState": "IN_USE"})
1115
1116             # Creating the entry in the database
1117             self.db.create("nsis", nsi_descriptor)
1118             rollback.append({"topic": "nsis", "_id": nsi_id})
1119             return nsi_id
1120         except Exception as e:
1121             self.logger.exception("Exception {} at NsiTopic.new()".format(e), exc_info=True)
1122             raise EngineException("Error {}: {}".format(step, e))
1123         except ValidationError as e:
1124             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
1125
1126     def edit(self, session, _id, indata=None, kwargs=None, content=None):
1127         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
1128
1129
1130 class NsiLcmOpTopic(BaseTopic):
1131     topic = "nsilcmops"
1132     topic_msg = "nsi"
1133     operation_schema = {  # mapping between operation and jsonschema to validate
1134         "instantiate": nsi_instantiate,
1135         "terminate": None
1136     }
1137
1138     def __init__(self, db, fs, msg):
1139         BaseTopic.__init__(self, db, fs, msg)
1140         self.nsi_NsLcmOpTopic = NsLcmOpTopic(self.db, self.fs, self.msg)
1141
1142     def _check_nsi_operation(self, session, nsir, operation, indata):
1143         """
1144         Check that user has enter right parameters for the operation
1145         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1146         :param operation: it can be: instantiate, terminate, action, TODO: update, heal
1147         :param indata: descriptor with the parameters of the operation
1148         :return: None
1149         """
1150         nsds = {}
1151         nstd = nsir["network-slice-template"]
1152
1153         def check_valid_netslice_subnet_id(nstId):
1154             # TODO change to vnfR (??)
1155             for netslice_subnet in nstd["netslice-subnet"]:
1156                 if nstId == netslice_subnet["id"]:
1157                     nsd_id = netslice_subnet["nsd-ref"]
1158                     if nsd_id not in nsds:
1159                         nsds[nsd_id] = self.db.get_one("nsds", {"id": nsd_id})
1160                     return nsds[nsd_id]
1161             else:
1162                 raise EngineException("Invalid parameter nstId='{}' is not one of the "
1163                                       "nst:netslice-subnet".format(nstId))
1164         if operation == "instantiate":
1165             # check the existance of netslice-subnet items
1166             for in_nst in get_iterable(indata.get("netslice-subnet")):
1167                 check_valid_netslice_subnet_id(in_nst["id"])
1168
1169     def _create_nsilcmop(self, session, netsliceInstanceId, operation, params):
1170         now = time()
1171         _id = str(uuid4())
1172         nsilcmop = {
1173             "id": _id,
1174             "_id": _id,
1175             "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
1176             "statusEnteredTime": now,
1177             "netsliceInstanceId": netsliceInstanceId,
1178             "lcmOperationType": operation,
1179             "startTime": now,
1180             "isAutomaticInvocation": False,
1181             "operationParams": params,
1182             "isCancelPending": False,
1183             "links": {
1184                 "self": "/osm/nsilcm/v1/nsi_lcm_op_occs/" + _id,
1185                 "nsInstance": "/osm/nsilcm/v1/netslice_instances/" + netsliceInstanceId,
1186             }
1187         }
1188         return nsilcmop
1189
1190     def add_shared_nsr_2vld(self, nsir, nsr_item):
1191         for nst_sb_item in nsir["network-slice-template"].get("netslice-subnet"):
1192             if nst_sb_item.get("is-shared-nss"):
1193                 for admin_subnet_item in nsir["_admin"].get("netslice-subnet"):
1194                     if admin_subnet_item["nss-id"] == nst_sb_item["id"]:
1195                         for admin_vld_item in nsir["_admin"].get("netslice-vld"):
1196                             for admin_vld_nss_cp_ref_item in admin_vld_item["nss-connection-point-ref"]:
1197                                 if admin_subnet_item["nss-id"] == admin_vld_nss_cp_ref_item["nss-ref"]:
1198                                     if not nsr_item["nsrId"] in admin_vld_item["shared-nsrs-list"]:
1199                                         admin_vld_item["shared-nsrs-list"].append(nsr_item["nsrId"])
1200                                     break
1201         # self.db.set_one("nsis", {"_id": nsir["_id"]}, nsir)
1202         self.db.set_one("nsis", {"_id": nsir["_id"]}, {"_admin.netslice-vld": nsir["_admin"].get("netslice-vld")})
1203
1204     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
1205         """
1206         Performs a new operation over a ns
1207         :param rollback: list to append created items at database in case a rollback must to be done
1208         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1209         :param indata: descriptor with the parameters of the operation. It must contains among others
1210             nsiInstanceId: _id of the nsir to perform the operation
1211             operation: it can be: instantiate, terminate, action, TODO: update, heal
1212         :param kwargs: used to override the indata descriptor
1213         :param headers: http request headers
1214         :return: id of the nslcmops
1215         """
1216         try:
1217             # Override descriptor with query string kwargs
1218             self._update_input_with_kwargs(indata, kwargs)
1219             operation = indata["lcmOperationType"]
1220             nsiInstanceId = indata["nsiInstanceId"]
1221             validate_input(indata, self.operation_schema[operation])
1222
1223             # get nsi from nsiInstanceId
1224             _filter = self._get_project_filter(session)
1225             _filter["_id"] = nsiInstanceId
1226             nsir = self.db.get_one("nsis", _filter)
1227             del _filter["_id"]
1228
1229             # initial checking
1230             if not nsir["_admin"].get("nsiState") or nsir["_admin"]["nsiState"] == "NOT_INSTANTIATED":
1231                 if operation == "terminate" and indata.get("autoremove"):
1232                     # NSIR must be deleted
1233                     return None    # a none in this case is used to indicate not instantiated. It can be removed
1234                 if operation != "instantiate":
1235                     raise EngineException("netslice_instance '{}' cannot be '{}' because it is not instantiated".format(
1236                         nsiInstanceId, operation), HTTPStatus.CONFLICT)
1237             else:
1238                 if operation == "instantiate" and not session["force"]:
1239                     raise EngineException("netslice_instance '{}' cannot be '{}' because it is already instantiated".
1240                                           format(nsiInstanceId, operation), HTTPStatus.CONFLICT)
1241
1242             # Creating all the NS_operation (nslcmop)
1243             # Get service list from db
1244             nsrs_list = nsir["_admin"]["nsrs-detailed-list"]
1245             nslcmops = []
1246             # nslcmops_item = None
1247             for index, nsr_item in enumerate(nsrs_list):
1248                 nsi = None
1249                 if nsr_item.get("shared"):
1250                     _filter["_admin.nsrs-detailed-list.ANYINDEX.shared"] = True,
1251                     _filter["_admin.nsrs-detailed-list.ANYINDEX.nsrId"] = nsr_item["nsrId"]
1252                     _filter["_admin.nsrs-detailed-list.ANYINDEX.nslcmop_instantiate.ne"] = None
1253                     _filter["_id.ne"] = nsiInstanceId
1254
1255                     nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
1256                     # looks the first nsi fulfilling the conditions but not being the current NSIR
1257                     if nsi:
1258                         nsi_admin_shared = nsi["_admin"]["nsrs-detailed-list"]
1259                         for nsi_nsr_item in nsi_admin_shared:
1260                             if nsi_nsr_item["nsd-id"] == nsr_item["nsd-id"] and nsi_nsr_item["shared"]:
1261                                 self.add_shared_nsr_2vld(nsir, nsr_item)
1262                                 nslcmops.append(nsi_nsr_item["nslcmop_instantiate"])
1263                                 _update = {"_admin.nsrs-detailed-list.{}".format(index): nsi_nsr_item}
1264                                 self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
1265                                 break
1266                         # continue to not create nslcmop since nsrs is shared and nsrs was created
1267                         continue
1268                     else:
1269                         self.add_shared_nsr_2vld(nsir, nsr_item)
1270
1271                 try:
1272                     service = self.db.get_one("nsrs", {"_id": nsr_item["nsrId"]})
1273                     indata_ns = {}
1274                     indata_ns = service["instantiate_params"]
1275                     indata_ns["lcmOperationType"] = operation
1276                     indata_ns["nsInstanceId"] = service["_id"]
1277                     # Including netslice_id in the ns instantiate Operation
1278                     indata_ns["netsliceInstanceId"] = nsiInstanceId
1279                     del indata_ns["key-pair-ref"]
1280                     # Creating NS_LCM_OP with the flag slice_object=True to not trigger the service instantiation
1281                     # message via kafka bus
1282                     nslcmop = self.nsi_NsLcmOpTopic.new(rollback, session, indata_ns, kwargs, headers,
1283                                                         slice_object=True)
1284                     nslcmops.append(nslcmop)
1285                     if operation == "terminate":
1286                         nslcmop = None
1287                     _update = {"_admin.nsrs-detailed-list.{}.nslcmop_instantiate".format(index): nslcmop}
1288                     self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
1289                 except (DbException, EngineException) as e:
1290                     if e.http_code == HTTPStatus.NOT_FOUND:
1291                         self.logger.info("HTTPStatus.NOT_FOUND")
1292                         pass
1293                     else:
1294                         raise
1295
1296             # Creates nsilcmop
1297             indata["nslcmops_ids"] = nslcmops
1298             self._check_nsi_operation(session, nsir, operation, indata)
1299
1300             nsilcmop_desc = self._create_nsilcmop(session, nsiInstanceId, operation, indata)
1301             self.format_on_new(nsilcmop_desc, session["project_id"], make_public=session["public"])
1302             _id = self.db.create("nsilcmops", nsilcmop_desc)
1303             rollback.append({"topic": "nsilcmops", "_id": _id})
1304             self.msg.write("nsi", operation, nsilcmop_desc)
1305             return _id
1306         except ValidationError as e:
1307             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
1308
1309     def delete(self, session, _id, dry_run=False):
1310         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
1311
1312     def edit(self, session, _id, indata=None, kwargs=None, content=None):
1313         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)