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