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 osm_nbi.validation import validate_input, ValidationError, ns_instantiate, ns_action, ns_scale, nsi_instantiate
  22 from osm_nbi.base_topic import BaseTopic, EngineException, get_iterable, deep_get
  23 # from descriptor_topics import DescriptorTopic
  24 from yaml import safe_dump
  25 from osm_common.dbbase import DbException
  26 from osm_common.msgbase import MsgException
  27 from osm_common.fsbase import FsException
  28 from re import match  # For checking that additional parameter names are valid Jinja2 identifiers
  29
  30 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
  31
  32
  33 class NsrTopic(BaseTopic):
  34     topic = "nsrs"
  35     topic_msg = "ns"
  36     schema_new = ns_instantiate
  37
  38     def __init__(self, db, fs, msg, auth):
  39         BaseTopic.__init__(self, db, fs, msg, auth)
  40
  41     def _check_descriptor_dependencies(self, session, descriptor):
  42         """
  43         Check that the dependent descriptors exist on a new descriptor or edition
  44         :param session: client session information
  45         :param descriptor: descriptor to be inserted or edit
  46         :return: None or raises exception
  47         """
  48         if not descriptor.get("nsdId"):
  49             return
  50         nsd_id = descriptor["nsdId"]
  51         if not self.get_item_list(session, "nsds", {"id": nsd_id}):
  52             raise EngineException("Descriptor error at nsdId='{}' references a non exist nsd".format(nsd_id),
  53                                   http_code=HTTPStatus.CONFLICT)
  54
  55     @staticmethod
  56     def format_on_new(content, project_id=None, make_public=False):
  57         BaseTopic.format_on_new(content, project_id=project_id, make_public=make_public)
  58         content["_admin"]["nsState"] = "NOT_INSTANTIATED"
  59         return None
  60
  61     def check_conflict_on_del(self, session, _id, db_content):
  62         """
  63         Check that NSR is not instantiated
  64         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
  65         :param _id: nsr internal id
  66         :param db_content: The database content of the nsr
  67         :return: None or raises EngineException with the conflict
  68         """
  69         if session["force"]:
  70             return
  71         nsr = db_content
  72         if nsr["_admin"].get("nsState") == "INSTANTIATED":
  73             raise EngineException("nsr '{}' cannot be deleted because it is in 'INSTANTIATED' state. "
  74                                   "Launch 'terminate' operation first; or force deletion".format(_id),
  75                                   http_code=HTTPStatus.CONFLICT)
  76
  77     def delete_extra(self, session, _id, db_content, not_send_msg=None):
  78         """
  79         Deletes associated nslcmops and vnfrs from database. Deletes associated filesystem.
  80          Set usageState of pdu, vnfd, nsd
  81         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
  82         :param _id: server internal id
  83         :param db_content: The database content of the descriptor
  84         :param not_send_msg: To not send message (False) or store content (list) instead
  85         :return: None if ok or raises EngineException with the problem
  86         """
  87         self.fs.file_delete(_id, ignore_non_exist=True)
  88         self.db.del_list("nslcmops", {"nsInstanceId": _id})
  89         self.db.del_list("vnfrs", {"nsr-id-ref": _id})
  90
  91         # set all used pdus as free
  92         self.db.set_list("pdus", {"_admin.usage.nsr_id": _id},
  93                          {"_admin.usageState": "NOT_IN_USE", "_admin.usage": None})
  94
  95         # Set NSD usageState
  96         nsr = db_content
  97         used_nsd_id = nsr.get("nsd-id")
  98         if used_nsd_id:
  99             # check if used by another NSR
 100             nsrs_list = self.db.get_one("nsrs", {"nsd-id": used_nsd_id},
 101                                         fail_on_empty=False, fail_on_more=False)
 102             if not nsrs_list:
 103                 self.db.set_one("nsds", {"_id": used_nsd_id}, {"_admin.usageState": "NOT_IN_USE"})
 104
 105         # Set VNFD usageState
 106         used_vnfd_id_list = nsr.get("vnfd-id")
 107         if used_vnfd_id_list:
 108             for used_vnfd_id in used_vnfd_id_list:
 109                 # check if used by another NSR
 110                 nsrs_list = self.db.get_one("nsrs", {"vnfd-id": used_vnfd_id},
 111                                             fail_on_empty=False, fail_on_more=False)
 112                 if not nsrs_list:
 113                     self.db.set_one("vnfds", {"_id": used_vnfd_id}, {"_admin.usageState": "NOT_IN_USE"})
 114
 115     @staticmethod
 116     def _format_ns_request(ns_request):
 117         formated_request = copy(ns_request)
 118         formated_request.pop("additionalParamsForNs", None)
 119         formated_request.pop("additionalParamsForVnf", None)
 120         return formated_request
 121
 122     @staticmethod
 123     def _format_addional_params(ns_request, member_vnf_index=None, vdu_id=None, kdu_name=None, descriptor=None):
 124         """
 125         Get and format user additional params for NS or VNF
 126         :param ns_request: User instantiation additional parameters
 127         :param member_vnf_index: None for extract NS params, or member_vnf_index to extract VNF params
 128         :param descriptor: If not None it check that needed parameters of descriptor are supplied
 129         :return: a formatted copy of additional params or None if not supplied
 130         """
 131         additional_params = None
 132         if not member_vnf_index:
 133             additional_params = copy(ns_request.get("additionalParamsForNs"))
 134             where_ = "additionalParamsForNs"
 135         elif ns_request.get("additionalParamsForVnf"):
 136             where_ = "additionalParamsForVnf[member-vnf-index={}]".format(member_vnf_index)
 137             item = next((x for x in ns_request["additionalParamsForVnf"] if x["member-vnf-index"] == member_vnf_index),
 138                         None)
 139             if item:
 140                 additional_params = copy(item.get("additionalParams")) or {}
 141                 if vdu_id and item.get("additionalParamsForVdu"):
 142                     item_vdu = next((x for x in item["additionalParamsForVdu"] if x["vdu_id"] == vdu_id), None)
 143                     if item_vdu and item_vdu.get("additionalParams"):
 144                         where_ += ".additionalParamsForVdu[vdu_id={}]".format(vdu_id)
 145                         additional_params = item_vdu["additionalParams"]
 146                 if kdu_name:
 147                     additional_params = {}
 148                     if item.get("additionalParamsForKdu"):
 149                         item_kdu = next((x for x in item["additionalParamsForKdu"] if x["kdu_name"] == kdu_name), None)
 150                         if item_kdu and item_kdu.get("additionalParams"):
 151                             where_ += ".additionalParamsForKdu[kdu_name={}]".format(kdu_name)
 152                             additional_params = item_kdu["additionalParams"]
 153
 154         if additional_params:
 155             for k, v in additional_params.items():
 156                 # BEGIN Check that additional parameter names are valid Jinja2 identifiers if target is not Kdu
 157                 if not kdu_name and not match('^[a-zA-Z_][a-zA-Z0-9_]*$', k):
 158                     raise EngineException("Invalid param name at {}:{}. Must contain only alphanumeric characters "
 159                                           "and underscores, and cannot start with a digit"
 160                                           .format(where_, k))
 161                 # END Check that additional parameter names are valid Jinja2 identifiers
 162                 if not isinstance(k, str):
 163                     raise EngineException("Invalid param at {}:{}. Only string keys are allowed".format(where_, k))
 164                 if "." in k or "$" in k:
 165                     raise EngineException("Invalid param at {}:{}. Keys must not contain dots or $".format(where_, k))
 166                 if isinstance(v, (dict, tuple, list)):
 167                     additional_params[k] = "!!yaml " + safe_dump(v)
 168
 169         if descriptor:
 170             # check that enough parameters are supplied for the initial-config-primitive
 171             # TODO: check for cloud-init
 172             if member_vnf_index:
 173                 if kdu_name:
 174                     initial_primitives = None
 175                 elif vdu_id:
 176                     vdud = next(x for x in descriptor["vdu"] if x["id"] == vdu_id)
 177                     initial_primitives = deep_get(vdud, ("vdu-configuration", "initial-config-primitive"))
 178                 else:
 179                     initial_primitives = deep_get(descriptor, ("vnf-configuration", "initial-config-primitive"))
 180             else:
 181                 initial_primitives = deep_get(descriptor, ("ns-configuration", "initial-config-primitive"))
 182
 183             for initial_primitive in get_iterable(initial_primitives):
 184                 for param in get_iterable(initial_primitive.get("parameter")):
 185                     if param["value"].startswith("<") and param["value"].endswith(">"):
 186                         if param["value"] in ("<rw_mgmt_ip>", "<VDU_SCALE_INFO>", "<ns_config_info>"):
 187                             continue
 188                         if not additional_params or param["value"][1:-1] not in additional_params:
 189                             raise EngineException("Parameter '{}' needed for vnfd[id={}]:vnf-configuration:"
 190                                                   "initial-config-primitive[name={}] not supplied".
 191                                                   format(param["value"], descriptor["id"],
 192                                                          initial_primitive["name"]))
 193
 194         return additional_params or None
 195
 196     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
 197         """
 198         Creates a new nsr into database. It also creates needed vnfrs
 199         :param rollback: list to append the created items at database in case a rollback must be done
 200         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 201         :param indata: params to be used for the nsr
 202         :param kwargs: used to override the indata descriptor
 203         :param headers: http request headers
 204         :return: the _id of nsr descriptor created at database. Or an exception of type
 205             EngineException, ValidationError, DbException, FsException, MsgException.
 206             Note: Exceptions are not captured on purpose. They should be captured at called
 207         """
 208
 209         try:
 210             step = "checking quotas"
 211             self.check_quota(session)
 212
 213             step = "validating input parameters"
 214             ns_request = self._remove_envelop(indata)
 215             # Override descriptor with query string kwargs
 216             self._update_input_with_kwargs(ns_request, kwargs)
 217             self._validate_input_new(ns_request, session["force"])
 218
 219             # look for nsr
 220             step = "getting nsd id='{}' from database".format(ns_request.get("nsdId"))
 221             _filter = self._get_project_filter(session)
 222             _filter["_id"] = ns_request["nsdId"]
 223             nsd = self.db.get_one("nsds", _filter)
 224             del _filter["_id"]
 225
 226             nsr_id = str(uuid4())
 227
 228             now = time()
 229             step = "filling nsr from input data"
 230             nsr_descriptor = {
 231                 "name": ns_request["nsName"],
 232                 "name-ref": ns_request["nsName"],
 233                 "short-name": ns_request["nsName"],
 234                 "admin-status": "ENABLED",
 235                 "nsState": "NOT_INSTANTIATED",
 236                 "currentOperation": "IDLE",
 237                 "currentOperationID": None,
 238                 "errorDescription": None,
 239                 "errorDetail": None,
 240                 "deploymentStatus": None,
 241                 "configurationStatus": None,
 242                 "vcaStatus": None,
 243                 "nsd": nsd,
 244                 "datacenter": ns_request["vimAccountId"],
 245                 "resource-orchestrator": "osmopenmano",
 246                 "description": ns_request.get("nsDescription", ""),
 247                 "constituent-vnfr-ref": [],
 248
 249                 "operational-status": "init",    # typedef ns-operational-
 250                 "config-status": "init",         # typedef config-states
 251                 "detailed-status": "scheduled",
 252
 253                 "orchestration-progress": {},
 254                 # {"networks": {"active": 0, "total": 0}, "vms": {"active": 0, "total": 0}},
 255
 256                 "create-time": now,
 257                 "nsd-name-ref": nsd["name"],
 258                 "operational-events": [],   # "id", "timestamp", "description", "event",
 259                 "nsd-ref": nsd["id"],
 260                 "nsd-id": nsd["_id"],
 261                 "vnfd-id": [],
 262                 "instantiate_params": self._format_ns_request(ns_request),
 263                 "additionalParamsForNs": self._format_addional_params(ns_request, descriptor=nsd),
 264                 "ns-instance-config-ref": nsr_id,
 265                 "id": nsr_id,
 266                 "_id": nsr_id,
 267                 # "input-parameter": xpath, value,
 268                 "ssh-authorized-key": ns_request.get("ssh_keys"),  # TODO remove
 269             }
 270             ns_request["nsr_id"] = nsr_id
 271             # Create vld
 272             if nsd.get("vld"):
 273                 nsr_descriptor["vld"] = []
 274                 for nsd_vld in nsd.get("vld"):
 275                     nsr_descriptor["vld"].append(
 276                         {key: nsd_vld[key] for key in ("id", "vim-network-name", "vim-network-id") if key in nsd_vld})
 277
 278             # Create VNFR
 279             needed_vnfds = {}
 280             for member_vnf in nsd.get("constituent-vnfd", ()):
 281                 vnfd_id = member_vnf["vnfd-id-ref"]
 282                 step = "getting vnfd id='{}' constituent-vnfd='{}' from database".format(
 283                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 284                 if vnfd_id not in needed_vnfds:
 285                     # Obtain vnfd
 286                     _filter["id"] = vnfd_id
 287                     vnfd = self.db.get_one("vnfds", _filter, fail_on_empty=True, fail_on_more=True)
 288                     del _filter["id"]
 289                     vnfd.pop("_admin")
 290                     needed_vnfds[vnfd_id] = vnfd
 291                     nsr_descriptor["vnfd-id"].append(vnfd["_id"])
 292                 else:
 293                     vnfd = needed_vnfds[vnfd_id]
 294                 step = "filling vnfr  vnfd-id='{}' constituent-vnfd='{}'".format(
 295                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 296                 vnfr_id = str(uuid4())
 297                 vnfr_descriptor = {
 298                     "id": vnfr_id,
 299                     "_id": vnfr_id,
 300                     "nsr-id-ref": nsr_id,
 301                     "member-vnf-index-ref": member_vnf["member-vnf-index"],
 302                     "additionalParamsForVnf": self._format_addional_params(ns_request, member_vnf["member-vnf-index"],
 303                                                                            descriptor=vnfd),
 304                     "created-time": now,
 305                     # "vnfd": vnfd,        # at OSM model.but removed to avoid data duplication TODO: revise
 306                     "vnfd-ref": vnfd_id,
 307                     "vnfd-id": vnfd["_id"],    # not at OSM model, but useful
 308                     "vim-account-id": None,
 309                     "vdur": [],
 310                     "connection-point": [],
 311                     "ip-address": None,  # mgmt-interface filled by LCM
 312                 }
 313
 314                 # Create vld
 315                 if vnfd.get("internal-vld"):
 316                     vnfr_descriptor["vld"] = []
 317                     for vnfd_vld in vnfd.get("internal-vld"):
 318                         vnfr_descriptor["vld"].append(
 319                             {key: vnfd_vld[key] for key in ("id", "vim-network-name", "vim-network-id") if key in
 320                              vnfd_vld})
 321
 322                 vnfd_mgmt_cp = vnfd["mgmt-interface"].get("cp")
 323                 for cp in vnfd.get("connection-point", ()):
 324                     vnf_cp = {
 325                         "name": cp["name"],
 326                         "connection-point-id": cp.get("id"),
 327                         "id": cp.get("id"),
 328                         # "ip-address", "mac-address" # filled by LCM
 329                         # vim-id  # TODO it would be nice having a vim port id
 330                     }
 331                     vnfr_descriptor["connection-point"].append(vnf_cp)
 332
 333                 # Create k8s-cluster information
 334                 if vnfd.get("k8s-cluster"):
 335                     vnfr_descriptor["k8s-cluster"] = vnfd["k8s-cluster"]
 336                     for net in get_iterable(vnfr_descriptor["k8s-cluster"].get("nets")):
 337                         if net.get("external-connection-point-ref"):
 338                             for nsd_vld in get_iterable(nsd.get("vld")):
 339                                 for nsd_vld_cp in get_iterable(nsd_vld.get("vnfd-connection-point-ref")):
 340                                     if nsd_vld_cp.get("vnfd-connection-point-ref") == \
 341                                             net["external-connection-point-ref"] and \
 342                                             nsd_vld_cp.get("member-vnf-index-ref") == member_vnf["member-vnf-index"]:
 343                                         net["ns-vld-id"] = nsd_vld["id"]
 344                                         break
 345                                 else:
 346                                     continue
 347                                 break
 348                         elif net.get("internal-connection-point-ref"):
 349                             for vnfd_ivld in get_iterable(vnfd.get("internal-vld")):
 350                                 for vnfd_ivld_icp in get_iterable(vnfd_ivld.get("internal-connection-point")):
 351                                     if vnfd_ivld_icp.get("id-ref") == net["internal-connection-point-ref"]:
 352                                         net["vnf-vld-id"] = vnfd_ivld["id"]
 353                                         break
 354                                 else:
 355                                     continue
 356                                 break
 357                 # update kdus
 358                 for kdu in get_iterable(vnfd.get("kdu")):
 359                     kdur = {x: kdu[x] for x in kdu if x in ("helm-chart", "juju-bundle")}
 360                     kdur["kdu-name"] = kdu["name"]
 361                     # TODO      "name": ""     Name of the VDU in the VIM
 362                     kdur["ip-address"] = None  # mgmt-interface filled by LCM
 363                     kdur["k8s-cluster"] = {}
 364                     kdur["additionalParams"] = self._format_addional_params(ns_request, member_vnf["member-vnf-index"],
 365                                                                             kdu_name=kdu["name"], descriptor=vnfd)
 366                     if not vnfr_descriptor.get("kdur"):
 367                         vnfr_descriptor["kdur"] = []
 368                     vnfr_descriptor["kdur"].append(kdur)
 369
 370                 for vdu in vnfd.get("vdu", ()):
 371                     vdur = {
 372                         "vdu-id-ref": vdu["id"],
 373                         # TODO      "name": ""     Name of the VDU in the VIM
 374                         "ip-address": None,  # mgmt-interface filled by LCM
 375                         # "vim-id", "flavor-id", "image-id", "management-ip" # filled by LCM
 376                         "internal-connection-point": [],
 377                         "interfaces": [],
 378                         "additionalParams": self._format_addional_params(ns_request, member_vnf["member-vnf-index"],
 379                                                                          vdu_id=vdu["id"], descriptor=vnfd)
 380                     }
 381                     if vdu.get("pdu-type"):
 382                         vdur["pdu-type"] = vdu["pdu-type"]
 383                     # TODO volumes: name, volume-id
 384                     for icp in vdu.get("internal-connection-point", ()):
 385                         vdu_icp = {
 386                             "id": icp["id"],
 387                             "connection-point-id": icp["id"],
 388                             "name": icp.get("name"),
 389                             # "ip-address", "mac-address" # filled by LCM
 390                             # vim-id  # TODO it would be nice having a vim port id
 391                         }
 392                         vdur["internal-connection-point"].append(vdu_icp)
 393                     for iface in vdu.get("interface", ()):
 394                         vdu_iface = {
 395                             "name": iface.get("name"),
 396                             # "ip-address", "mac-address" # filled by LCM
 397                             # vim-id  # TODO it would be nice having a vim port id
 398                         }
 399                         if vnfd_mgmt_cp and iface.get("external-connection-point-ref") == vnfd_mgmt_cp:
 400                             vdu_iface["mgmt-vnf"] = True
 401                         if iface.get("mgmt-interface"):
 402                             vdu_iface["mgmt-interface"] = True  # TODO change to mgmt-vdu
 403
 404                         # look for network where this interface is connected
 405                         if iface.get("external-connection-point-ref"):
 406                             for nsd_vld in get_iterable(nsd.get("vld")):
 407                                 for nsd_vld_cp in get_iterable(nsd_vld.get("vnfd-connection-point-ref")):
 408                                     if nsd_vld_cp.get("vnfd-connection-point-ref") == \
 409                                             iface["external-connection-point-ref"] and \
 410                                             nsd_vld_cp.get("member-vnf-index-ref") == member_vnf["member-vnf-index"]:
 411                                         vdu_iface["ns-vld-id"] = nsd_vld["id"]
 412                                         break
 413                                 else:
 414                                     continue
 415                                 break
 416                         elif iface.get("internal-connection-point-ref"):
 417                             for vnfd_ivld in get_iterable(vnfd.get("internal-vld")):
 418                                 for vnfd_ivld_icp in get_iterable(vnfd_ivld.get("internal-connection-point")):
 419                                     if vnfd_ivld_icp.get("id-ref") == iface["internal-connection-point-ref"]:
 420                                         vdu_iface["vnf-vld-id"] = vnfd_ivld["id"]
 421                                         break
 422                                 else:
 423                                     continue
 424                                 break
 425
 426                         vdur["interfaces"].append(vdu_iface)
 427                     count = vdu.get("count", 1)
 428                     if count is None:
 429                         count = 1
 430                     count = int(count)    # TODO remove when descriptor serialized with payngbind
 431                     for index in range(0, count):
 432                         if index:
 433                             vdur = deepcopy(vdur)
 434                         vdur["_id"] = str(uuid4())
 435                         vdur["count-index"] = index
 436                         vnfr_descriptor["vdur"].append(vdur)
 437
 438                 step = "creating vnfr vnfd-id='{}' constituent-vnfd='{}' at database".format(
 439                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 440
 441                 # add at database
 442                 self.format_on_new(vnfr_descriptor, session["project_id"], make_public=session["public"])
 443                 self.db.create("vnfrs", vnfr_descriptor)
 444                 rollback.append({"topic": "vnfrs", "_id": vnfr_id})
 445                 nsr_descriptor["constituent-vnfr-ref"].append(vnfr_id)
 446
 447             step = "creating nsr at database"
 448             self.format_on_new(nsr_descriptor, session["project_id"], make_public=session["public"])
 449             self.db.create("nsrs", nsr_descriptor)
 450             rollback.append({"topic": "nsrs", "_id": nsr_id})
 451
 452             step = "creating nsr temporal folder"
 453             self.fs.mkdir(nsr_id)
 454
 455             return nsr_id, None
 456         except (ValidationError, EngineException, DbException, MsgException, FsException) as e:
 457             raise type(e)("{} while '{}".format(e, step), http_code=e.http_code)
 458
 459     def edit(self, session, _id, indata=None, kwargs=None, content=None):
 460         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 461
 462
 463 class VnfrTopic(BaseTopic):
 464     topic = "vnfrs"
 465     topic_msg = None
 466
 467     def __init__(self, db, fs, msg, auth):
 468         BaseTopic.__init__(self, db, fs, msg, auth)
 469
 470     def delete(self, session, _id, dry_run=False, not_send_msg=None):
 471         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 472
 473     def edit(self, session, _id, indata=None, kwargs=None, content=None):
 474         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 475
 476     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
 477         # Not used because vnfrs are created and deleted by NsrTopic class directly
 478         raise EngineException("Method new called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 479
 480
 481 class NsLcmOpTopic(BaseTopic):
 482     topic = "nslcmops"
 483     topic_msg = "ns"
 484     operation_schema = {    # mapping between operation and jsonschema to validate
 485         "instantiate": ns_instantiate,
 486         "action": ns_action,
 487         "scale": ns_scale,
 488         "terminate": None,
 489     }
 490
 491     def __init__(self, db, fs, msg, auth):
 492         BaseTopic.__init__(self, db, fs, msg, auth)
 493
 494     def _check_ns_operation(self, session, nsr, operation, indata):
 495         """
 496         Check that user has enter right parameters for the operation
 497         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 498         :param operation: it can be: instantiate, terminate, action, TODO: update, heal
 499         :param indata: descriptor with the parameters of the operation
 500         :return: None
 501         """
 502         vnf_member_index_to_vnfd = {}  # map between vnf_member_index to vnf descriptor.
 503         vim_accounts = []
 504         wim_accounts = []
 505         nsd = nsr["nsd"]
 506
 507         def check_valid_vnf_member_index(member_vnf_index):
 508             # Obtain vnf descriptor. The vnfr is used to get the vnfd._id used for this member_vnf_index
 509             if vnf_member_index_to_vnfd.get(member_vnf_index):
 510                 return vnf_member_index_to_vnfd[member_vnf_index]
 511             vnfr = self.db.get_one("vnfrs",
 512                                    {"nsr-id-ref": nsr["_id"], "member-vnf-index-ref": member_vnf_index},
 513                                    fail_on_empty=False)
 514             if not vnfr:
 515                 raise EngineException("Invalid parameter member_vnf_index='{}' is not one of the "
 516                                       "nsd:constituent-vnfd".format(member_vnf_index))
 517             vnfd = self.db.get_one("vnfds", {"_id": vnfr["vnfd-id"]}, fail_on_empty=False)
 518             if not vnfd:
 519                 raise EngineException("vnfd id={} has been deleted!. Operation cannot be performed".
 520                                       format(vnfr["vnfd-id"]))
 521             vnf_member_index_to_vnfd[member_vnf_index] = vnfd  # add to cache, avoiding a later look for
 522             return vnfd
 523
 524         def check_valid_vdu(vnfd, vdu_id):
 525             for vdud in get_iterable(vnfd.get("vdu")):
 526                 if vdud["id"] == vdu_id:
 527                     return vdud
 528             else:
 529                 raise EngineException("Invalid parameter vdu_id='{}' not present at vnfd:vdu:id".format(vdu_id))
 530
 531         def check_valid_kdu(vnfd, kdu_name):
 532             for kdud in get_iterable(vnfd.get("kdu")):
 533                 if kdud["name"] == kdu_name:
 534                     return kdud
 535             else:
 536                 raise EngineException("Invalid parameter kdu_name='{}' not present at vnfd:kdu:name".format(kdu_name))
 537
 538         def _check_vnf_instantiation_params(in_vnfd, vnfd):
 539
 540             for in_vdu in get_iterable(in_vnfd.get("vdu")):
 541                 for vdu in get_iterable(vnfd.get("vdu")):
 542                     if in_vdu["id"] == vdu["id"]:
 543                         for volume in get_iterable(in_vdu.get("volume")):
 544                             for volumed in get_iterable(vdu.get("volumes")):
 545                                 if volumed["name"] == volume["name"]:
 546                                     break
 547                             else:
 548                                 raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:vdu[id='{}']:"
 549                                                       "volume:name='{}' is not present at vnfd:vdu:volumes list".
 550                                                       format(in_vnf["member-vnf-index"], in_vdu["id"],
 551                                                              volume["name"]))
 552                         for in_iface in get_iterable(in_vdu["interface"]):
 553                             for iface in get_iterable(vdu.get("interface")):
 554                                 if in_iface["name"] == iface["name"]:
 555                                     break
 556                             else:
 557                                 raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:vdu[id='{}']:"
 558                                                       "interface[name='{}'] is not present at vnfd:vdu:interface"
 559                                                       .format(in_vnf["member-vnf-index"], in_vdu["id"],
 560                                                               in_iface["name"]))
 561                         break
 562                 else:
 563                     raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:vdu[id='{}'] is is not present "
 564                                           "at vnfd:vdu".format(in_vnf["member-vnf-index"], in_vdu["id"]))
 565
 566             for in_ivld in get_iterable(in_vnfd.get("internal-vld")):
 567                 for ivld in get_iterable(vnfd.get("internal-vld")):
 568                     if in_ivld["name"] == ivld["name"] or in_ivld["name"] == ivld["id"]:
 569                         for in_icp in get_iterable(in_ivld.get("internal-connection-point")):
 570                             for icp in ivld["internal-connection-point"]:
 571                                 if in_icp["id-ref"] == icp["id-ref"]:
 572                                     break
 573                             else:
 574                                 raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:internal-vld[name"
 575                                                       "='{}']:internal-connection-point[id-ref:'{}'] is not present at "
 576                                                       "vnfd:internal-vld:name/id:internal-connection-point"
 577                                                       .format(in_vnf["member-vnf-index"], in_ivld["name"],
 578                                                               in_icp["id-ref"], vnfd["id"]))
 579                         break
 580                 else:
 581                     raise EngineException("Invalid parameter vnf[member-vnf-index='{}']:internal-vld:name='{}'"
 582                                           " is not present at vnfd '{}'".format(in_vnf["member-vnf-index"],
 583                                                                                 in_ivld["name"], vnfd["id"]))
 584
 585         def check_valid_vim_account(vim_account):
 586             if vim_account in vim_accounts:
 587                 return
 588             try:
 589                 db_filter = self._get_project_filter(session)
 590                 db_filter["_id"] = vim_account
 591                 self.db.get_one("vim_accounts", db_filter)
 592             except Exception:
 593                 raise EngineException("Invalid vimAccountId='{}' not present for the project".format(vim_account))
 594             vim_accounts.append(vim_account)
 595
 596         def check_valid_wim_account(wim_account):
 597             if not isinstance(wim_account, str):
 598                 return
 599             elif wim_account in wim_accounts:
 600                 return
 601             try:
 602                 db_filter = self._get_project_filter(session, write=False, show_all=True)
 603                 db_filter["_id"] = wim_account
 604                 self.db.get_one("wim_accounts", db_filter)
 605             except Exception:
 606                 raise EngineException("Invalid wimAccountId='{}' not present for the project".format(wim_account))
 607             wim_accounts.append(wim_account)
 608
 609         if operation == "action":
 610             # check vnf_member_index
 611             if indata.get("vnf_member_index"):
 612                 indata["member_vnf_index"] = indata.pop("vnf_member_index")    # for backward compatibility
 613             if indata.get("member_vnf_index"):
 614                 vnfd = check_valid_vnf_member_index(indata["member_vnf_index"])
 615                 if indata.get("vdu_id"):
 616                     vdud = check_valid_vdu(vnfd, indata["vdu_id"])
 617                     descriptor_configuration = vdud.get("vdu-configuration", {}).get("config-primitive")
 618                 elif indata.get("kdu_name"):
 619                     kdud = check_valid_kdu(vnfd, indata["kdu_name"])
 620                     descriptor_configuration = kdud.get("kdu-configuration", {}).get("config-primitive")
 621                 else:
 622                     descriptor_configuration = vnfd.get("vnf-configuration", {}).get("config-primitive")
 623             else:  # use a NSD
 624                 descriptor_configuration = nsd.get("ns-configuration", {}).get("config-primitive")
 625
 626             # For k8s allows default primitives without validating the parameters
 627             if indata.get("kdu_name") and indata["primitive"] in ("upgrade", "rollback", "status", "inspect", "readme"):
 628                 # TODO should be checked that rollback only can contains revsision_numbe????
 629                 if not indata.get("member_vnf_index"):
 630                     raise EngineException("Missing action parameter 'member_vnf_index' for default KDU primitive '{}'"
 631                                           .format(indata["primitive"]))
 632                 return
 633             # if not, check primitive
 634             for config_primitive in get_iterable(descriptor_configuration):
 635                 if indata["primitive"] == config_primitive["name"]:
 636                     # check needed primitive_params are provided
 637                     if indata.get("primitive_params"):
 638                         in_primitive_params_copy = copy(indata["primitive_params"])
 639                     else:
 640                         in_primitive_params_copy = {}
 641                     for paramd in get_iterable(config_primitive.get("parameter")):
 642                         if paramd["name"] in in_primitive_params_copy:
 643                             del in_primitive_params_copy[paramd["name"]]
 644                         elif not paramd.get("default-value"):
 645                             raise EngineException("Needed parameter {} not provided for primitive '{}'".format(
 646                                 paramd["name"], indata["primitive"]))
 647                     # check no extra primitive params are provided
 648                     if in_primitive_params_copy:
 649                         raise EngineException("parameter/s '{}' not present at vnfd /nsd for primitive '{}'".format(
 650                             list(in_primitive_params_copy.keys()), indata["primitive"]))
 651                     break
 652             else:
 653                 raise EngineException("Invalid primitive '{}' is not present at vnfd/nsd".format(indata["primitive"]))
 654         if operation == "scale":
 655             vnfd = check_valid_vnf_member_index(indata["scaleVnfData"]["scaleByStepData"]["member-vnf-index"])
 656             for scaling_group in get_iterable(vnfd.get("scaling-group-descriptor")):
 657                 if indata["scaleVnfData"]["scaleByStepData"]["scaling-group-descriptor"] == scaling_group["name"]:
 658                     break
 659             else:
 660                 raise EngineException("Invalid scaleVnfData:scaleByStepData:scaling-group-descriptor '{}' is not "
 661                                       "present at vnfd:scaling-group-descriptor".format(
 662                                           indata["scaleVnfData"]["scaleByStepData"]["scaling-group-descriptor"]))
 663         if operation == "instantiate":
 664             # check vim_account
 665             check_valid_vim_account(indata["vimAccountId"])
 666             check_valid_wim_account(indata.get("wimAccountId"))
 667             for in_vnf in get_iterable(indata.get("vnf")):
 668                 vnfd = check_valid_vnf_member_index(in_vnf["member-vnf-index"])
 669                 _check_vnf_instantiation_params(in_vnf, vnfd)
 670                 if in_vnf.get("vimAccountId"):
 671                     check_valid_vim_account(in_vnf["vimAccountId"])
 672
 673             for in_vld in get_iterable(indata.get("vld")):
 674                 check_valid_wim_account(in_vld.get("wimAccountId"))
 675                 for vldd in get_iterable(nsd.get("vld")):
 676                     if in_vld["name"] == vldd["name"] or in_vld["name"] == vldd["id"]:
 677                         break
 678                 else:
 679                     raise EngineException("Invalid parameter vld:name='{}' is not present at nsd:vld".format(
 680                         in_vld["name"]))
 681
 682     def _look_for_pdu(self, session, rollback, vnfr, vim_account, vnfr_update, vnfr_update_rollback):
 683         """
 684         Look for a free PDU in the catalog matching vdur type and interfaces. Fills vnfr.vdur with the interface
 685         (ip_address, ...) information.
 686         Modifies PDU _admin.usageState to 'IN_USE'
 687         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 688         :param rollback: list with the database modifications to rollback if needed
 689         :param vnfr: vnfr to be updated. It is modified with pdu interface info if pdu is found
 690         :param vim_account: vim_account where this vnfr should be deployed
 691         :param vnfr_update: dictionary filled by this method with changes to be done at database vnfr
 692         :param vnfr_update_rollback: dictionary filled by this method with original content of vnfr in case a rollback
 693                                      of the changed vnfr is needed
 694
 695         :return: List of PDU interfaces that are connected to an existing VIM network. Each item contains:
 696                  "vim-network-name": used at VIM
 697                   "name": interface name
 698                   "vnf-vld-id": internal VNFD vld where this interface is connected, or
 699                   "ns-vld-id": NSD vld where this interface is connected.
 700                   NOTE: One, and only one between 'vnf-vld-id' and 'ns-vld-id' contains a value. The other will be None
 701         """
 702
 703         ifaces_forcing_vim_network = []
 704         for vdur_index, vdur in enumerate(get_iterable(vnfr.get("vdur"))):
 705             if not vdur.get("pdu-type"):
 706                 continue
 707             pdu_type = vdur.get("pdu-type")
 708             pdu_filter = self._get_project_filter(session)
 709             pdu_filter["vim_accounts"] = vim_account
 710             pdu_filter["type"] = pdu_type
 711             pdu_filter["_admin.operationalState"] = "ENABLED"
 712             pdu_filter["_admin.usageState"] = "NOT_IN_USE"
 713             # TODO feature 1417: "shared": True,
 714
 715             available_pdus = self.db.get_list("pdus", pdu_filter)
 716             for pdu in available_pdus:
 717                 # step 1 check if this pdu contains needed interfaces:
 718                 match_interfaces = True
 719                 for vdur_interface in vdur["interfaces"]:
 720                     for pdu_interface in pdu["interfaces"]:
 721                         if pdu_interface["name"] == vdur_interface["name"]:
 722                             # TODO feature 1417: match per mgmt type
 723                             break
 724                     else:  # no interface found for name
 725                         match_interfaces = False
 726                         break
 727                 if match_interfaces:
 728                     break
 729             else:
 730                 raise EngineException(
 731                     "No PDU of type={} at vim_account={} found for member_vnf_index={}, vdu={} matching interface "
 732                     "names".format(pdu_type, vim_account, vnfr["member-vnf-index-ref"], vdur["vdu-id-ref"]))
 733
 734             # step 2. Update pdu
 735             rollback_pdu = {
 736                 "_admin.usageState": pdu["_admin"]["usageState"],
 737                 "_admin.usage.vnfr_id": None,
 738                 "_admin.usage.nsr_id": None,
 739                 "_admin.usage.vdur": None,
 740             }
 741             self.db.set_one("pdus", {"_id": pdu["_id"]},
 742                             {"_admin.usageState": "IN_USE",
 743                              "_admin.usage": {"vnfr_id": vnfr["_id"],
 744                                               "nsr_id": vnfr["nsr-id-ref"],
 745                                               "vdur": vdur["vdu-id-ref"]}
 746                              })
 747             rollback.append({"topic": "pdus", "_id": pdu["_id"], "operation": "set", "content": rollback_pdu})
 748
 749             # step 3. Fill vnfr info by filling vdur
 750             vdu_text = "vdur.{}".format(vdur_index)
 751             vnfr_update_rollback[vdu_text + ".pdu-id"] = None
 752             vnfr_update[vdu_text + ".pdu-id"] = pdu["_id"]
 753             for iface_index, vdur_interface in enumerate(vdur["interfaces"]):
 754                 for pdu_interface in pdu["interfaces"]:
 755                     if pdu_interface["name"] == vdur_interface["name"]:
 756                         iface_text = vdu_text + ".interfaces.{}".format(iface_index)
 757                         for k, v in pdu_interface.items():
 758                             if k in ("ip-address", "mac-address"):  # TODO: switch-xxxxx must be inserted
 759                                 vnfr_update[iface_text + ".{}".format(k)] = v
 760                                 vnfr_update_rollback[iface_text + ".{}".format(k)] = vdur_interface.get(v)
 761                         if pdu_interface.get("ip-address"):
 762                             if vdur_interface.get("mgmt-interface"):
 763                                 vnfr_update_rollback[vdu_text + ".ip-address"] = vdur.get("ip-address")
 764                                 vnfr_update[vdu_text + ".ip-address"] = pdu_interface["ip-address"]
 765                             if vdur_interface.get("mgmt-vnf"):
 766                                 vnfr_update_rollback["ip-address"] = vnfr.get("ip-address")
 767                                 vnfr_update["ip-address"] = pdu_interface["ip-address"]
 768                         if pdu_interface.get("vim-network-name") or pdu_interface.get("vim-network-id"):
 769                             ifaces_forcing_vim_network.append({
 770                                 "name": vdur_interface.get("vnf-vld-id") or vdur_interface.get("ns-vld-id"),
 771                                 "vnf-vld-id": vdur_interface.get("vnf-vld-id"),
 772                                 "ns-vld-id": vdur_interface.get("ns-vld-id")})
 773                             if pdu_interface.get("vim-network-id"):
 774                                 ifaces_forcing_vim_network[-1]["vim-network-id"] = pdu_interface["vim-network-id"]
 775                             if pdu_interface.get("vim-network-name"):
 776                                 ifaces_forcing_vim_network[-1]["vim-network-name"] = pdu_interface["vim-network-name"]
 777                         break
 778
 779         return ifaces_forcing_vim_network
 780
 781     def _look_for_k8scluster(self, session, rollback, vnfr, vim_account, vnfr_update, vnfr_update_rollback):
 782         """
 783         Look for an available k8scluster for all the kuds in the vnfd matching version and cni requirements.
 784         Fills vnfr.kdur with the selected k8scluster
 785
 786         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 787         :param rollback: list with the database modifications to rollback if needed
 788         :param vnfr: vnfr to be updated. It is modified with pdu interface info if pdu is found
 789         :param vim_account: vim_account where this vnfr should be deployed
 790         :param vnfr_update: dictionary filled by this method with changes to be done at database vnfr
 791         :param vnfr_update_rollback: dictionary filled by this method with original content of vnfr in case a rollback
 792                                      of the changed vnfr is needed
 793
 794         :return: List of KDU interfaces that are connected to an existing VIM network. Each item contains:
 795                  "vim-network-name": used at VIM
 796                   "name": interface name
 797                   "vnf-vld-id": internal VNFD vld where this interface is connected, or
 798                   "ns-vld-id": NSD vld where this interface is connected.
 799                   NOTE: One, and only one between 'vnf-vld-id' and 'ns-vld-id' contains a value. The other will be None
 800         """
 801
 802         ifaces_forcing_vim_network = []
 803         if not vnfr.get("kdur"):
 804             return ifaces_forcing_vim_network
 805
 806         kdu_filter = self._get_project_filter(session)
 807         kdu_filter["vim_account"] = vim_account
 808         # TODO kdu_filter["_admin.operationalState"] = "ENABLED"
 809         available_k8sclusters = self.db.get_list("k8sclusters", kdu_filter)
 810
 811         k8s_requirements = {}  # just for logging
 812         for k8scluster in available_k8sclusters:
 813             if not vnfr.get("k8s-cluster"):
 814                 break
 815             # restrict by cni
 816             if vnfr["k8s-cluster"].get("cni"):
 817                 k8s_requirements["cni"] = vnfr["k8s-cluster"]["cni"]
 818                 if not set(vnfr["k8s-cluster"]["cni"]).intersection(k8scluster.get("cni", ())):
 819                     continue
 820             # restrict by version
 821             if vnfr["k8s-cluster"].get("version"):
 822                 k8s_requirements["version"] = vnfr["k8s-cluster"]["version"]
 823                 if k8scluster.get("k8s_version") not in vnfr["k8s-cluster"]["version"]:
 824                     continue
 825             # restrict by number of networks
 826             if vnfr["k8s-cluster"].get("nets"):
 827                 k8s_requirements["networks"] = len(vnfr["k8s-cluster"]["nets"])
 828                 if not k8scluster.get("nets") or len(k8scluster["nets"]) < len(vnfr["k8s-cluster"]["nets"]):
 829                     continue
 830             break
 831         else:
 832             raise EngineException("No k8scluster with requirements='{}' at vim_account={} found for member_vnf_index={}"
 833                                   .format(k8s_requirements, vim_account, vnfr["member-vnf-index-ref"]))
 834
 835         for kdur_index, kdur in enumerate(get_iterable(vnfr.get("kdur"))):
 836             # step 3. Fill vnfr info by filling kdur
 837             kdu_text = "kdur.{}.".format(kdur_index)
 838             vnfr_update_rollback[kdu_text + "k8s-cluster.id"] = None
 839             vnfr_update[kdu_text + "k8s-cluster.id"] = k8scluster["_id"]
 840
 841         # step 4. Check VIM networks that forces the selected k8s_cluster
 842         if vnfr.get("k8s-cluster") and vnfr["k8s-cluster"].get("nets"):
 843             k8scluster_net_list = list(k8scluster.get("nets").keys())
 844             for net_index, kdur_net in enumerate(vnfr["k8s-cluster"]["nets"]):
 845                 # get a network from k8s_cluster nets. If name matches use this, if not use other
 846                 if kdur_net["id"] in k8scluster_net_list:  # name matches
 847                     vim_net = k8scluster["nets"][kdur_net["id"]]
 848                     k8scluster_net_list.remove(kdur_net["id"])
 849                 else:
 850                     vim_net = k8scluster["nets"][k8scluster_net_list[0]]
 851                     k8scluster_net_list.pop(0)
 852                 vnfr_update_rollback["k8s-cluster.nets.{}.vim_net".format(net_index)] = None
 853                 vnfr_update["k8s-cluster.nets.{}.vim_net".format(net_index)] = vim_net
 854                 if vim_net and (kdur_net.get("vnf-vld-id") or kdur_net.get("ns-vld-id")):
 855                     ifaces_forcing_vim_network.append({
 856                         "name": kdur_net.get("vnf-vld-id") or kdur_net.get("ns-vld-id"),
 857                         "vnf-vld-id": kdur_net.get("vnf-vld-id"),
 858                         "ns-vld-id": kdur_net.get("ns-vld-id"),
 859                         "vim-network-name": vim_net,   # TODO can it be vim-network-id ???
 860                     })
 861             # TODO check that this forcing is not incompatible with other forcing
 862         return ifaces_forcing_vim_network
 863
 864     def _update_vnfrs(self, session, rollback, nsr, indata):
 865         # get vnfr
 866         nsr_id = nsr["_id"]
 867         vnfrs = self.db.get_list("vnfrs", {"nsr-id-ref": nsr_id})
 868
 869         for vnfr in vnfrs:
 870             vnfr_update = {}
 871             vnfr_update_rollback = {}
 872             member_vnf_index = vnfr["member-vnf-index-ref"]
 873             # update vim-account-id
 874
 875             vim_account = indata["vimAccountId"]
 876             # check instantiate parameters
 877             for vnf_inst_params in get_iterable(indata.get("vnf")):
 878                 if vnf_inst_params["member-vnf-index"] != member_vnf_index:
 879                     continue
 880                 if vnf_inst_params.get("vimAccountId"):
 881                     vim_account = vnf_inst_params.get("vimAccountId")
 882
 883             vnfr_update["vim-account-id"] = vim_account
 884             vnfr_update_rollback["vim-account-id"] = vnfr.get("vim-account-id")
 885
 886             # get pdu
 887             ifaces_forcing_vim_network = self._look_for_pdu(session, rollback, vnfr, vim_account, vnfr_update,
 888                                                             vnfr_update_rollback)
 889
 890             # get kdus
 891             ifaces_forcing_vim_network += self._look_for_k8scluster(session, rollback, vnfr, vim_account, vnfr_update,
 892                                                                     vnfr_update_rollback)
 893             # update database vnfr
 894             self.db.set_one("vnfrs", {"_id": vnfr["_id"]}, vnfr_update)
 895             rollback.append({"topic": "vnfrs", "_id": vnfr["_id"], "operation": "set", "content": vnfr_update_rollback})
 896
 897             # Update indada in case pdu forces to use a concrete vim-network-name
 898             # TODO check if user has already insert a vim-network-name and raises an error
 899             if not ifaces_forcing_vim_network:
 900                 continue
 901             for iface_info in ifaces_forcing_vim_network:
 902                 if iface_info.get("ns-vld-id"):
 903                     if "vld" not in indata:
 904                         indata["vld"] = []
 905                     indata["vld"].append({key: iface_info[key] for key in
 906                                           ("name", "vim-network-name", "vim-network-id") if iface_info.get(key)})
 907
 908                 elif iface_info.get("vnf-vld-id"):
 909                     if "vnf" not in indata:
 910                         indata["vnf"] = []
 911                     indata["vnf"].append({
 912                         "member-vnf-index": member_vnf_index,
 913                         "internal-vld": [{key: iface_info[key] for key in
 914                                           ("name", "vim-network-name", "vim-network-id") if iface_info.get(key)}]
 915                     })
 916
 917     @staticmethod
 918     def _create_nslcmop(nsr_id, operation, params):
 919         """
 920         Creates a ns-lcm-opp content to be stored at database.
 921         :param nsr_id: internal id of the instance
 922         :param operation: instantiate, terminate, scale, action, ...
 923         :param params: user parameters for the operation
 924         :return: dictionary following SOL005 format
 925         """
 926         now = time()
 927         _id = str(uuid4())
 928         nslcmop = {
 929             "id": _id,
 930             "_id": _id,
 931             "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
 932             "queuePosition": None,
 933             "stage": None,
 934             "errorMessage": None,
 935             "detailedStatus": None,
 936             "statusEnteredTime": now,
 937             "nsInstanceId": nsr_id,
 938             "lcmOperationType": operation,
 939             "startTime": now,
 940             "isAutomaticInvocation": False,
 941             "operationParams": params,
 942             "isCancelPending": False,
 943             "links": {
 944                 "self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id,
 945                 "nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id,
 946             }
 947         }
 948         return nslcmop
 949
 950     def new(self, rollback, session, indata=None, kwargs=None, headers=None, slice_object=False):
 951         """
 952         Performs a new operation over a ns
 953         :param rollback: list to append created items at database in case a rollback must to be done
 954         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
 955         :param indata: descriptor with the parameters of the operation. It must contains among others
 956             nsInstanceId: _id of the nsr to perform the operation
 957             operation: it can be: instantiate, terminate, action, TODO: update, heal
 958         :param kwargs: used to override the indata descriptor
 959         :param headers: http request headers
 960         :return: id of the nslcmops
 961         """
 962         def check_if_nsr_is_not_slice_member(session, nsr_id):
 963             nsis = None
 964             db_filter = self._get_project_filter(session)
 965             db_filter["_admin.nsrs-detailed-list.ANYINDEX.nsrId"] = nsr_id
 966             nsis = self.db.get_one("nsis", db_filter, fail_on_empty=False, fail_on_more=False)
 967             if nsis:
 968                 raise EngineException("The NS instance {} cannot be terminate because is used by the slice {}".format(
 969                                       nsr_id, nsis["_id"]), http_code=HTTPStatus.CONFLICT)
 970
 971         try:
 972             # Override descriptor with query string kwargs
 973             self._update_input_with_kwargs(indata, kwargs)
 974             operation = indata["lcmOperationType"]
 975             nsInstanceId = indata["nsInstanceId"]
 976
 977             validate_input(indata, self.operation_schema[operation])
 978             # get ns from nsr_id
 979             _filter = BaseTopic._get_project_filter(session)
 980             _filter["_id"] = nsInstanceId
 981             nsr = self.db.get_one("nsrs", _filter)
 982
 983             # initial checking
 984             if operation == "terminate" and slice_object is False:
 985                 check_if_nsr_is_not_slice_member(session, nsr["_id"])
 986             if not nsr["_admin"].get("nsState") or nsr["_admin"]["nsState"] == "NOT_INSTANTIATED":
 987                 if operation == "terminate" and indata.get("autoremove"):
 988                     # NSR must be deleted
 989                     return None, None    # a none in this case is used to indicate not instantiated. It can be removed
 990                 if operation != "instantiate":
 991                     raise EngineException("ns_instance '{}' cannot be '{}' because it is not instantiated".format(
 992                         nsInstanceId, operation), HTTPStatus.CONFLICT)
 993             else:
 994                 if operation == "instantiate" and not session["force"]:
 995                     raise EngineException("ns_instance '{}' cannot be '{}' because it is already instantiated".format(
 996                         nsInstanceId, operation), HTTPStatus.CONFLICT)
 997             self._check_ns_operation(session, nsr, operation, indata)
 998
 999             if operation == "instantiate":
1000                 self._update_vnfrs(session, rollback, nsr, indata)
1001
1002             nslcmop_desc = self._create_nslcmop(nsInstanceId, operation, indata)
1003             _id = nslcmop_desc["_id"]
1004             self.format_on_new(nslcmop_desc, session["project_id"], make_public=session["public"])
1005             self.db.create("nslcmops", nslcmop_desc)
1006             rollback.append({"topic": "nslcmops", "_id": _id})
1007             if not slice_object:
1008                 self.msg.write("ns", operation, nslcmop_desc)
1009             return _id, None
1010         except ValidationError as e:  # TODO remove try Except, it is captured at nbi.py
1011             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
1012         # except DbException as e:
1013         #     raise EngineException("Cannot get ns_instance '{}': {}".format(e), HTTPStatus.NOT_FOUND)
1014
1015     def delete(self, session, _id, dry_run=False, not_send_msg=None):
1016         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
1017
1018     def edit(self, session, _id, indata=None, kwargs=None, content=None):
1019         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
1020
1021
1022 class NsiTopic(BaseTopic):
1023     topic = "nsis"
1024     topic_msg = "nsi"
1025
1026     def __init__(self, db, fs, msg, auth):
1027         BaseTopic.__init__(self, db, fs, msg, auth)
1028         self.nsrTopic = NsrTopic(db, fs, msg, auth)
1029
1030     @staticmethod
1031     def _format_ns_request(ns_request):
1032         formated_request = copy(ns_request)
1033         # TODO: Add request params
1034         return formated_request
1035
1036     @staticmethod
1037     def _format_addional_params(slice_request):
1038         """
1039         Get and format user additional params for NS or VNF
1040         :param slice_request: User instantiation additional parameters
1041         :return: a formatted copy of additional params or None if not supplied
1042         """
1043         additional_params = copy(slice_request.get("additionalParamsForNsi"))
1044         if additional_params:
1045             for k, v in additional_params.items():
1046                 if not isinstance(k, str):
1047                     raise EngineException("Invalid param at additionalParamsForNsi:{}. Only string keys are allowed".
1048                                           format(k))
1049                 if "." in k or "$" in k:
1050                     raise EngineException("Invalid param at additionalParamsForNsi:{}. Keys must not contain dots or $".
1051                                           format(k))
1052                 if isinstance(v, (dict, tuple, list)):
1053                     additional_params[k] = "!!yaml " + safe_dump(v)
1054         return additional_params
1055
1056     def _check_descriptor_dependencies(self, session, descriptor):
1057         """
1058         Check that the dependent descriptors exist on a new descriptor or edition
1059         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1060         :param descriptor: descriptor to be inserted or edit
1061         :return: None or raises exception
1062         """
1063         if not descriptor.get("nst-ref"):
1064             return
1065         nstd_id = descriptor["nst-ref"]
1066         if not self.get_item_list(session, "nsts", {"id": nstd_id}):
1067             raise EngineException("Descriptor error at nst-ref='{}' references a non exist nstd".format(nstd_id),
1068                                   http_code=HTTPStatus.CONFLICT)
1069
1070     def check_conflict_on_del(self, session, _id, db_content):
1071         """
1072         Check that NSI is not instantiated
1073         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1074         :param _id: nsi internal id
1075         :param db_content: The database content of the _id
1076         :return: None or raises EngineException with the conflict
1077         """
1078         if session["force"]:
1079             return
1080         nsi = db_content
1081         if nsi["_admin"].get("nsiState") == "INSTANTIATED":
1082             raise EngineException("nsi '{}' cannot be deleted because it is in 'INSTANTIATED' state. "
1083                                   "Launch 'terminate' operation first; or force deletion".format(_id),
1084                                   http_code=HTTPStatus.CONFLICT)
1085
1086     def delete_extra(self, session, _id, db_content, not_send_msg=None):
1087         """
1088         Deletes associated nsilcmops from database. Deletes associated filesystem.
1089          Set usageState of nst
1090         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1091         :param _id: server internal id
1092         :param db_content: The database content of the descriptor
1093         :param not_send_msg: To not send message (False) or store content (list) instead
1094         :return: None if ok or raises EngineException with the problem
1095         """
1096
1097         # Deleting the nsrs belonging to nsir
1098         nsir = db_content
1099         for nsrs_detailed_item in nsir["_admin"]["nsrs-detailed-list"]:
1100             nsr_id = nsrs_detailed_item["nsrId"]
1101             if nsrs_detailed_item.get("shared"):
1102                 _filter = {"_admin.nsrs-detailed-list.ANYINDEX.shared": True,
1103                            "_admin.nsrs-detailed-list.ANYINDEX.nsrId": nsr_id,
1104                            "_id.ne": nsir["_id"]}
1105                 nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
1106                 if nsi:  # last one using nsr
1107                     continue
1108             try:
1109                 self.nsrTopic.delete(session, nsr_id, dry_run=False, not_send_msg=not_send_msg)
1110             except (DbException, EngineException) as e:
1111                 if e.http_code == HTTPStatus.NOT_FOUND:
1112                     pass
1113                 else:
1114                     raise
1115
1116         # delete related nsilcmops database entries
1117         self.db.del_list("nsilcmops", {"netsliceInstanceId": _id})
1118
1119         # Check and set used NST usage state
1120         nsir_admin = nsir.get("_admin")
1121         if nsir_admin and nsir_admin.get("nst-id"):
1122             # check if used by another NSI
1123             nsis_list = self.db.get_one("nsis", {"nst-id": nsir_admin["nst-id"]},
1124                                         fail_on_empty=False, fail_on_more=False)
1125             if not nsis_list:
1126                 self.db.set_one("nsts", {"_id": nsir_admin["nst-id"]}, {"_admin.usageState": "NOT_IN_USE"})
1127
1128     # def delete(self, session, _id, dry_run=False):
1129     #     """
1130     #     Delete item by its internal _id
1131     #     :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1132     #     :param _id: server internal id
1133     #     :param dry_run: make checking but do not delete
1134     #     :return: dictionary with deleted item _id. It raises EngineException on error: not found, conflict, ...
1135     #     """
1136     #     # TODO add admin to filter, validate rights
1137     #     BaseTopic.delete(self, session, _id, dry_run=True)
1138     #     if dry_run:
1139     #         return
1140     #
1141     #     # Deleting the nsrs belonging to nsir
1142     #     nsir = self.db.get_one("nsis", {"_id": _id})
1143     #     for nsrs_detailed_item in nsir["_admin"]["nsrs-detailed-list"]:
1144     #         nsr_id = nsrs_detailed_item["nsrId"]
1145     #         if nsrs_detailed_item.get("shared"):
1146     #             _filter = {"_admin.nsrs-detailed-list.ANYINDEX.shared": True,
1147     #                        "_admin.nsrs-detailed-list.ANYINDEX.nsrId": nsr_id,
1148     #                        "_id.ne": nsir["_id"]}
1149     #             nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
1150     #             if nsi:  # last one using nsr
1151     #                 continue
1152     #         try:
1153     #             self.nsrTopic.delete(session, nsr_id, dry_run=False)
1154     #         except (DbException, EngineException) as e:
1155     #             if e.http_code == HTTPStatus.NOT_FOUND:
1156     #                 pass
1157     #             else:
1158     #                 raise
1159     #     # deletes NetSlice instance object
1160     #     v = self.db.del_one("nsis", {"_id": _id})
1161     #
1162     #     # makes a temporal list of nsilcmops objects related to the _id given and deletes them from db
1163     #     _filter = {"netsliceInstanceId": _id}
1164     #     self.db.del_list("nsilcmops", _filter)
1165     #
1166     #     # Search if nst is being used by other nsi
1167     #     nsir_admin = nsir.get("_admin")
1168     #     if nsir_admin:
1169     #         if nsir_admin.get("nst-id"):
1170     #             nsis_list = self.db.get_one("nsis", {"nst-id": nsir_admin["nst-id"]},
1171     #                                         fail_on_empty=False, fail_on_more=False)
1172     #             if not nsis_list:
1173     #                 self.db.set_one("nsts", {"_id": nsir_admin["nst-id"]}, {"_admin.usageState": "NOT_IN_USE"})
1174     #     return v
1175
1176     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
1177         """
1178         Creates a new netslice instance record into database. It also creates needed nsrs and vnfrs
1179         :param rollback: list to append the created items at database in case a rollback must be done
1180         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1181         :param indata: params to be used for the nsir
1182         :param kwargs: used to override the indata descriptor
1183         :param headers: http request headers
1184         :return: the _id of nsi descriptor created at database
1185         """
1186
1187         try:
1188             step = "checking quotas"
1189             self.check_quota(session)
1190
1191             step = ""
1192             slice_request = self._remove_envelop(indata)
1193             # Override descriptor with query string kwargs
1194             self._update_input_with_kwargs(slice_request, kwargs)
1195             self._validate_input_new(slice_request, session["force"])
1196
1197             # look for nstd
1198             step = "getting nstd id='{}' from database".format(slice_request.get("nstId"))
1199             _filter = self._get_project_filter(session)
1200             _filter["_id"] = slice_request["nstId"]
1201             nstd = self.db.get_one("nsts", _filter)
1202             del _filter["_id"]
1203
1204             nstd.pop("_admin", None)
1205             nstd_id = nstd.pop("_id", None)
1206             nsi_id = str(uuid4())
1207             step = "filling nsi_descriptor with input data"
1208
1209             # Creating the NSIR
1210             nsi_descriptor = {
1211                 "id": nsi_id,
1212                 "name": slice_request["nsiName"],
1213                 "description": slice_request.get("nsiDescription", ""),
1214                 "datacenter": slice_request["vimAccountId"],
1215                 "nst-ref": nstd["id"],
1216                 "instantiation_parameters": slice_request,
1217                 "network-slice-template": nstd,
1218                 "nsr-ref-list": [],
1219                 "vlr-list": [],
1220                 "_id": nsi_id,
1221                 "additionalParamsForNsi": self._format_addional_params(slice_request)
1222             }
1223
1224             step = "creating nsi at database"
1225             self.format_on_new(nsi_descriptor, session["project_id"], make_public=session["public"])
1226             nsi_descriptor["_admin"]["nsiState"] = "NOT_INSTANTIATED"
1227             nsi_descriptor["_admin"]["netslice-subnet"] = None
1228             nsi_descriptor["_admin"]["deployed"] = {}
1229             nsi_descriptor["_admin"]["deployed"]["RO"] = []
1230             nsi_descriptor["_admin"]["nst-id"] = nstd_id
1231
1232             # Creating netslice-vld for the RO.
1233             step = "creating netslice-vld at database"
1234
1235             # Building the vlds list to be deployed
1236             # From netslice descriptors, creating the initial list
1237             nsi_vlds = []
1238
1239             for netslice_vlds in get_iterable(nstd.get("netslice-vld")):
1240                 # Getting template Instantiation parameters from NST
1241                 nsi_vld = deepcopy(netslice_vlds)
1242                 nsi_vld["shared-nsrs-list"] = []
1243                 nsi_vld["vimAccountId"] = slice_request["vimAccountId"]
1244                 nsi_vlds.append(nsi_vld)
1245
1246             nsi_descriptor["_admin"]["netslice-vld"] = nsi_vlds
1247             # Creating netslice-subnet_record.
1248             needed_nsds = {}
1249             services = []
1250
1251             # Updating the nstd with the nsd["_id"] associated to the nss -> services list
1252             for member_ns in nstd["netslice-subnet"]:
1253                 nsd_id = member_ns["nsd-ref"]
1254                 step = "getting nstd id='{}' constituent-nsd='{}' from database".format(
1255                     member_ns["nsd-ref"], member_ns["id"])
1256                 if nsd_id not in needed_nsds:
1257                     # Obtain nsd
1258                     _filter["id"] = nsd_id
1259                     nsd = self.db.get_one("nsds", _filter, fail_on_empty=True, fail_on_more=True)
1260                     del _filter["id"]
1261                     nsd.pop("_admin")
1262                     needed_nsds[nsd_id] = nsd
1263                 else:
1264                     nsd = needed_nsds[nsd_id]
1265                 member_ns["_id"] = needed_nsds[nsd_id].get("_id")
1266                 services.append(member_ns)
1267
1268                 step = "filling nsir nsd-id='{}' constituent-nsd='{}' from database".format(
1269                     member_ns["nsd-ref"], member_ns["id"])
1270
1271             # creates Network Services records (NSRs)
1272             step = "creating nsrs at database using NsrTopic.new()"
1273             ns_params = slice_request.get("netslice-subnet")
1274             nsrs_list = []
1275             nsi_netslice_subnet = []
1276             for service in services:
1277                 # Check if the netslice-subnet is shared and if it is share if the nss exists
1278                 _id_nsr = None
1279                 indata_ns = {}
1280                 # Is the nss shared and instantiated?
1281                 _filter["_admin.nsrs-detailed-list.ANYINDEX.shared"] = True
1282                 _filter["_admin.nsrs-detailed-list.ANYINDEX.nsd-id"] = service["nsd-ref"]
1283                 _filter["_admin.nsrs-detailed-list.ANYINDEX.nss-id"] = service["id"]
1284                 nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
1285                 if nsi and service.get("is-shared-nss"):
1286                     nsrs_detailed_list = nsi["_admin"]["nsrs-detailed-list"]
1287                     for nsrs_detailed_item in nsrs_detailed_list:
1288                         if nsrs_detailed_item["nsd-id"] == service["nsd-ref"]:
1289                             if nsrs_detailed_item["nss-id"] == service["id"]:
1290                                 _id_nsr = nsrs_detailed_item["nsrId"]
1291                                 break
1292                     for netslice_subnet in nsi["_admin"]["netslice-subnet"]:
1293                         if netslice_subnet["nss-id"] == service["id"]:
1294                             indata_ns = netslice_subnet
1295                             break
1296                 else:
1297                     indata_ns = {}
1298                     if service.get("instantiation-parameters"):
1299                         indata_ns = deepcopy(service["instantiation-parameters"])
1300                         # del service["instantiation-parameters"]
1301
1302                     indata_ns["nsdId"] = service["_id"]
1303                     indata_ns["nsName"] = slice_request.get("nsiName") + "." + service["id"]
1304                     indata_ns["vimAccountId"] = slice_request.get("vimAccountId")
1305                     indata_ns["nsDescription"] = service["description"]
1306                     if slice_request.get("ssh_keys"):
1307                         indata_ns["ssh_keys"] = slice_request.get("ssh_keys")
1308
1309                     if ns_params:
1310                         for ns_param in ns_params:
1311                             if ns_param.get("id") == service["id"]:
1312                                 copy_ns_param = deepcopy(ns_param)
1313                                 del copy_ns_param["id"]
1314                                 indata_ns.update(copy_ns_param)
1315                                 break
1316
1317                     # Creates Nsr objects
1318                     _id_nsr, _ = self.nsrTopic.new(rollback, session, indata_ns, kwargs, headers)
1319                 nsrs_item = {"nsrId": _id_nsr, "shared": service.get("is-shared-nss"), "nsd-id": service["nsd-ref"],
1320                              "nss-id": service["id"], "nslcmop_instantiate": None}
1321                 indata_ns["nss-id"] = service["id"]
1322                 nsrs_list.append(nsrs_item)
1323                 nsi_netslice_subnet.append(indata_ns)
1324                 nsr_ref = {"nsr-ref": _id_nsr}
1325                 nsi_descriptor["nsr-ref-list"].append(nsr_ref)
1326
1327             # Adding the nsrs list to the nsi
1328             nsi_descriptor["_admin"]["nsrs-detailed-list"] = nsrs_list
1329             nsi_descriptor["_admin"]["netslice-subnet"] = nsi_netslice_subnet
1330             self.db.set_one("nsts", {"_id": slice_request["nstId"]}, {"_admin.usageState": "IN_USE"})
1331
1332             # Creating the entry in the database
1333             self.db.create("nsis", nsi_descriptor)
1334             rollback.append({"topic": "nsis", "_id": nsi_id})
1335             return nsi_id, None
1336         except Exception as e:   # TODO remove try Except, it is captured at nbi.py
1337             self.logger.exception("Exception {} at NsiTopic.new()".format(e), exc_info=True)
1338             raise EngineException("Error {}: {}".format(step, e))
1339         except ValidationError as e:
1340             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
1341
1342     def edit(self, session, _id, indata=None, kwargs=None, content=None):
1343         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
1344
1345
1346 class NsiLcmOpTopic(BaseTopic):
1347     topic = "nsilcmops"
1348     topic_msg = "nsi"
1349     operation_schema = {  # mapping between operation and jsonschema to validate
1350         "instantiate": nsi_instantiate,
1351         "terminate": None
1352     }
1353
1354     def __init__(self, db, fs, msg, auth):
1355         BaseTopic.__init__(self, db, fs, msg, auth)
1356         self.nsi_NsLcmOpTopic = NsLcmOpTopic(self.db, self.fs, self.msg, self.auth)
1357
1358     def _check_nsi_operation(self, session, nsir, operation, indata):
1359         """
1360         Check that user has enter right parameters for the operation
1361         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1362         :param operation: it can be: instantiate, terminate, action, TODO: update, heal
1363         :param indata: descriptor with the parameters of the operation
1364         :return: None
1365         """
1366         nsds = {}
1367         nstd = nsir["network-slice-template"]
1368
1369         def check_valid_netslice_subnet_id(nstId):
1370             # TODO change to vnfR (??)
1371             for netslice_subnet in nstd["netslice-subnet"]:
1372                 if nstId == netslice_subnet["id"]:
1373                     nsd_id = netslice_subnet["nsd-ref"]
1374                     if nsd_id not in nsds:
1375                         nsds[nsd_id] = self.db.get_one("nsds", {"id": nsd_id})
1376                     return nsds[nsd_id]
1377             else:
1378                 raise EngineException("Invalid parameter nstId='{}' is not one of the "
1379                                       "nst:netslice-subnet".format(nstId))
1380         if operation == "instantiate":
1381             # check the existance of netslice-subnet items
1382             for in_nst in get_iterable(indata.get("netslice-subnet")):
1383                 check_valid_netslice_subnet_id(in_nst["id"])
1384
1385     def _create_nsilcmop(self, session, netsliceInstanceId, operation, params):
1386         now = time()
1387         _id = str(uuid4())
1388         nsilcmop = {
1389             "id": _id,
1390             "_id": _id,
1391             "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
1392             "statusEnteredTime": now,
1393             "netsliceInstanceId": netsliceInstanceId,
1394             "lcmOperationType": operation,
1395             "startTime": now,
1396             "isAutomaticInvocation": False,
1397             "operationParams": params,
1398             "isCancelPending": False,
1399             "links": {
1400                 "self": "/osm/nsilcm/v1/nsi_lcm_op_occs/" + _id,
1401                 "netsliceInstanceId": "/osm/nsilcm/v1/netslice_instances/" + netsliceInstanceId,
1402             }
1403         }
1404         return nsilcmop
1405
1406     def add_shared_nsr_2vld(self, nsir, nsr_item):
1407         for nst_sb_item in nsir["network-slice-template"].get("netslice-subnet"):
1408             if nst_sb_item.get("is-shared-nss"):
1409                 for admin_subnet_item in nsir["_admin"].get("netslice-subnet"):
1410                     if admin_subnet_item["nss-id"] == nst_sb_item["id"]:
1411                         for admin_vld_item in nsir["_admin"].get("netslice-vld"):
1412                             for admin_vld_nss_cp_ref_item in admin_vld_item["nss-connection-point-ref"]:
1413                                 if admin_subnet_item["nss-id"] == admin_vld_nss_cp_ref_item["nss-ref"]:
1414                                     if not nsr_item["nsrId"] in admin_vld_item["shared-nsrs-list"]:
1415                                         admin_vld_item["shared-nsrs-list"].append(nsr_item["nsrId"])
1416                                     break
1417         # self.db.set_one("nsis", {"_id": nsir["_id"]}, nsir)
1418         self.db.set_one("nsis", {"_id": nsir["_id"]}, {"_admin.netslice-vld": nsir["_admin"].get("netslice-vld")})
1419
1420     def new(self, rollback, session, indata=None, kwargs=None, headers=None):
1421         """
1422         Performs a new operation over a ns
1423         :param rollback: list to append created items at database in case a rollback must to be done
1424         :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
1425         :param indata: descriptor with the parameters of the operation. It must contains among others
1426             netsliceInstanceId: _id of the nsir to perform the operation
1427             operation: it can be: instantiate, terminate, action, TODO: update, heal
1428         :param kwargs: used to override the indata descriptor
1429         :param headers: http request headers
1430         :return: id of the nslcmops
1431         """
1432         try:
1433             # Override descriptor with query string kwargs
1434             self._update_input_with_kwargs(indata, kwargs)
1435             operation = indata["lcmOperationType"]
1436             netsliceInstanceId = indata["netsliceInstanceId"]
1437             validate_input(indata, self.operation_schema[operation])
1438
1439             # get nsi from netsliceInstanceId
1440             _filter = self._get_project_filter(session)
1441             _filter["_id"] = netsliceInstanceId
1442             nsir = self.db.get_one("nsis", _filter)
1443             del _filter["_id"]
1444
1445             # initial checking
1446             if not nsir["_admin"].get("nsiState") or nsir["_admin"]["nsiState"] == "NOT_INSTANTIATED":
1447                 if operation == "terminate" and indata.get("autoremove"):
1448                     # NSIR must be deleted
1449                     return None, None    # a none in this case is used to indicate not instantiated. It can be removed
1450                 if operation != "instantiate":
1451                     raise EngineException("netslice_instance '{}' cannot be '{}' because it is not instantiated".format(
1452                         netsliceInstanceId, operation), HTTPStatus.CONFLICT)
1453             else:
1454                 if operation == "instantiate" and not session["force"]:
1455                     raise EngineException("netslice_instance '{}' cannot be '{}' because it is already instantiated".
1456                                           format(netsliceInstanceId, operation), HTTPStatus.CONFLICT)
1457
1458             # Creating all the NS_operation (nslcmop)
1459             # Get service list from db
1460             nsrs_list = nsir["_admin"]["nsrs-detailed-list"]
1461             nslcmops = []
1462             # nslcmops_item = None
1463             for index, nsr_item in enumerate(nsrs_list):
1464                 nsi = None
1465                 if nsr_item.get("shared"):
1466                     _filter["_admin.nsrs-detailed-list.ANYINDEX.shared"] = True
1467                     _filter["_admin.nsrs-detailed-list.ANYINDEX.nsrId"] = nsr_item["nsrId"]
1468                     _filter["_admin.nsrs-detailed-list.ANYINDEX.nslcmop_instantiate.ne"] = None
1469                     _filter["_id.ne"] = netsliceInstanceId
1470                     nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
1471                     if operation == "terminate":
1472                         _update = {"_admin.nsrs-detailed-list.{}.nslcmop_instantiate".format(index): None}
1473                         self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
1474
1475                     # looks the first nsi fulfilling the conditions but not being the current NSIR
1476                     if nsi:
1477                         nsi_admin_shared = nsi["_admin"]["nsrs-detailed-list"]
1478                         for nsi_nsr_item in nsi_admin_shared:
1479                             if nsi_nsr_item["nsd-id"] == nsr_item["nsd-id"] and nsi_nsr_item["shared"]:
1480                                 self.add_shared_nsr_2vld(nsir, nsr_item)
1481                                 nslcmops.append(nsi_nsr_item["nslcmop_instantiate"])
1482                                 _update = {"_admin.nsrs-detailed-list.{}".format(index): nsi_nsr_item}
1483                                 self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
1484                                 break
1485                         # continue to not create nslcmop since nsrs is shared and nsrs was created
1486                         continue
1487                     else:
1488                         self.add_shared_nsr_2vld(nsir, nsr_item)
1489
1490                 try:
1491                     service = self.db.get_one("nsrs", {"_id": nsr_item["nsrId"]})
1492                     indata_ns = {}
1493                     indata_ns = service["instantiate_params"]
1494                     indata_ns["lcmOperationType"] = operation
1495                     indata_ns["nsInstanceId"] = service["_id"]
1496                     # Including netslice_id in the ns instantiate Operation
1497                     indata_ns["netsliceInstanceId"] = netsliceInstanceId
1498                     # Creating NS_LCM_OP with the flag slice_object=True to not trigger the service instantiation
1499                     # message via kafka bus
1500                     nslcmop, _ = self.nsi_NsLcmOpTopic.new(rollback, session, indata_ns, kwargs, headers,
1501                                                            slice_object=True)
1502                     nslcmops.append(nslcmop)
1503                     if operation == "terminate":
1504                         nslcmop = None
1505                     _update = {"_admin.nsrs-detailed-list.{}.nslcmop_instantiate".format(index): nslcmop}
1506                     self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
1507                 except (DbException, EngineException) as e:
1508                     if e.http_code == HTTPStatus.NOT_FOUND:
1509                         self.logger.info("HTTPStatus.NOT_FOUND")
1510                         pass
1511                     else:
1512                         raise
1513
1514             # Creates nsilcmop
1515             indata["nslcmops_ids"] = nslcmops
1516             self._check_nsi_operation(session, nsir, operation, indata)
1517
1518             nsilcmop_desc = self._create_nsilcmop(session, netsliceInstanceId, operation, indata)
1519             self.format_on_new(nsilcmop_desc, session["project_id"], make_public=session["public"])
1520             _id = self.db.create("nsilcmops", nsilcmop_desc)
1521             rollback.append({"topic": "nsilcmops", "_id": _id})
1522             self.msg.write("nsi", operation, nsilcmop_desc)
1523             return _id, None
1524         except ValidationError as e:
1525             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
1526
1527     def delete(self, session, _id, dry_run=False, not_send_msg=None):
1528         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
1529
1530     def edit(self, session, _id, indata=None, kwargs=None, content=None):
1531         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)