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