fix bug 838. Validate action over vdu
[osm/NBI.git] / osm_nbi / instance_topics.py
index 41187dc..e36a723 100644 (file)
@@ -1,13 +1,29 @@
 # -*- coding: utf-8 -*-
 
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#    http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+# implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 # import logging
 from uuid import uuid4
 from http import HTTPStatus
 from time import time
 from copy import copy, deepcopy
-from validation import validate_input, ValidationError, ns_instantiate, ns_action, ns_scale, nsi_instantiate
-from base_topic import BaseTopic, EngineException, get_iterable
-from descriptor_topics import DescriptorTopic
+from osm_nbi.validation import validate_input, ValidationError, ns_instantiate, ns_action, ns_scale, nsi_instantiate
+from osm_nbi.base_topic import BaseTopic, EngineException, get_iterable
+# from descriptor_topics import DescriptorTopic
+from yaml import safe_dump
+from osm_common.dbbase import DbException
+from re import match  # For checking that additional parameter names are valid Jinja2 identifiers
 
 __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
 
@@ -15,6 +31,7 @@ __author__ = "Alfonso Tierno <alfonso.tiernosepulveda@telefonica.com>"
 class NsrTopic(BaseTopic):
     topic = "nsrs"
     topic_msg = "ns"
+    schema_new = ns_instantiate
 
     def __init__(self, db, fs, msg):
         BaseTopic.__init__(self, db, fs, msg)
@@ -37,66 +54,149 @@ class NsrTopic(BaseTopic):
     def format_on_new(content, project_id=None, make_public=False):
         BaseTopic.format_on_new(content, project_id=project_id, make_public=make_public)
         content["_admin"]["nsState"] = "NOT_INSTANTIATED"
+        return None
 
-    def check_conflict_on_del(self, session, _id, force=False):
-        if force:
+    def check_conflict_on_del(self, session, _id, db_content):
+        """
+        Check that NSR is not instantiated
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
+        :param _id: nsr internal id
+        :param db_content: The database content of the nsr
+        :return: None or raises EngineException with the conflict
+        """
+        if session["force"]:
             return
-        nsr = self.db.get_one("nsrs", {"_id": _id})
+        nsr = db_content
         if nsr["_admin"].get("nsState") == "INSTANTIATED":
             raise EngineException("nsr '{}' cannot be deleted because it is in 'INSTANTIATED' state. "
                                   "Launch 'terminate' operation first; or force deletion".format(_id),
                                   http_code=HTTPStatus.CONFLICT)
 
-    def delete(self, session, _id, force=False, dry_run=False):
+    def delete_extra(self, session, _id, db_content):
         """
-        Delete item by its internal _id
-        :param session: contains the used login username, working project, and admin rights
+        Deletes associated nslcmops and vnfrs from database. Deletes associated filesystem.
+         Set usageState of pdu, vnfd, nsd
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param _id: server internal id
-        :param force: indicates if deletion must be forced in case of conflict
-        :param dry_run: make checking but do not delete
-        :return: dictionary with deleted item _id. It raises EngineException on error: not found, conflict, ...
+        :param db_content: The database content of the descriptor
+        :return: None if ok or raises EngineException with the problem
         """
-        # TODO add admin to filter, validate rights
-        BaseTopic.delete(self, session, _id, force, dry_run=True)
-        if dry_run:
-            return
-
-        v = self.db.del_one("nsrs", {"_id": _id})
+        self.fs.file_delete(_id, ignore_non_exist=True)
         self.db.del_list("nslcmops", {"nsInstanceId": _id})
         self.db.del_list("vnfrs", {"nsr-id-ref": _id})
+
         # set all used pdus as free
         self.db.set_list("pdus", {"_admin.usage.nsr_id": _id},
                          {"_admin.usageState": "NOT_IN_USE", "_admin.usage": None})
-        self._send_msg("deleted", {"_id": _id})
-        return v
 
-    def new(self, rollback, session, indata=None, kwargs=None, headers=None, force=False, make_public=False):
+        # Set NSD usageState
+        nsr = db_content
+        used_nsd_id = nsr.get("nsd-id")
+        if used_nsd_id:
+            # check if used by another NSR
+            nsrs_list = self.db.get_one("nsrs", {"nsd-id": used_nsd_id},
+                                        fail_on_empty=False, fail_on_more=False)
+            if not nsrs_list:
+                self.db.set_one("nsds", {"_id": used_nsd_id}, {"_admin.usageState": "NOT_IN_USE"})
+
+        # Set VNFD usageState
+        used_vnfd_id_list = nsr.get("vnfd-id")
+        if used_vnfd_id_list:
+            for used_vnfd_id in used_vnfd_id_list:
+                # check if used by another NSR
+                nsrs_list = self.db.get_one("nsrs", {"vnfd-id": used_vnfd_id},
+                                            fail_on_empty=False, fail_on_more=False)
+                if not nsrs_list:
+                    self.db.set_one("vnfds", {"_id": used_vnfd_id}, {"_admin.usageState": "NOT_IN_USE"})
+
+    @staticmethod
+    def _format_ns_request(ns_request):
+        formated_request = copy(ns_request)
+        formated_request.pop("additionalParamsForNs", None)
+        formated_request.pop("additionalParamsForVnf", None)
+        return formated_request
+
+    @staticmethod
+    def _format_addional_params(ns_request, member_vnf_index=None, descriptor=None):
+        """
+        Get and format user additional params for NS or VNF
+        :param ns_request: User instantiation additional parameters
+        :param member_vnf_index: None for extract NS params, or member_vnf_index to extract VNF params
+        :param descriptor: If not None it check that needed parameters of descriptor are supplied
+        :return: a formated copy of additional params or None if not supplied
+        """
+        additional_params = None
+        if not member_vnf_index:
+            additional_params = copy(ns_request.get("additionalParamsForNs"))
+            where_ = "additionalParamsForNs"
+        elif ns_request.get("additionalParamsForVnf"):
+            for additionalParamsForVnf in get_iterable(ns_request.get("additionalParamsForVnf")):
+                if additionalParamsForVnf["member-vnf-index"] == member_vnf_index:
+                    additional_params = copy(additionalParamsForVnf.get("additionalParams"))
+                    where_ = "additionalParamsForVnf[member-vnf-index={}]".format(
+                        additionalParamsForVnf["member-vnf-index"])
+                    break
+        if additional_params:
+            for k, v in additional_params.items():
+                # BEGIN Check that additional parameter names are valid Jinja2 identifiers
+                if not match('^[a-zA-Z_][a-zA-Z0-9_]*$', k):
+                    raise EngineException("Invalid param name at {}:{}. Must contain only alphanumeric characters "
+                                          "and underscores, and cannot start with a digit"
+                                          .format(where_, k))
+                # END Check that additional parameter names are valid Jinja2 identifiers
+                if not isinstance(k, str):
+                    raise EngineException("Invalid param at {}:{}. Only string keys are allowed".format(where_, k))
+                if "." in k or "$" in k:
+                    raise EngineException("Invalid param at {}:{}. Keys must not contain dots or $".format(where_, k))
+                if isinstance(v, (dict, tuple, list)):
+                    additional_params[k] = "!!yaml " + safe_dump(v)
+
+        if descriptor:
+            # check that enough parameters are supplied for the initial-config-primitive
+            # TODO: check for cloud-init
+            if member_vnf_index:
+                if descriptor.get("vnf-configuration"):
+                    for initial_primitive in get_iterable(
+                            descriptor["vnf-configuration"].get("initial-config-primitive")):
+                        for param in get_iterable(initial_primitive.get("parameter")):
+                            if param["value"].startswith("<") and param["value"].endswith(">"):
+                                if param["value"] in ("<rw_mgmt_ip>", "<VDU_SCALE_INFO>"):
+                                    continue
+                                if not additional_params or param["value"][1:-1] not in additional_params:
+                                    raise EngineException("Parameter '{}' needed for vnfd[id={}]:vnf-configuration:"
+                                                          "initial-config-primitive[name={}] not supplied".
+                                                          format(param["value"], descriptor["id"],
+                                                                 initial_primitive["name"]))
+
+        return additional_params
+
+    def new(self, rollback, session, indata=None, kwargs=None, headers=None):
         """
         Creates a new nsr into database. It also creates needed vnfrs
         :param rollback: list to append the created items at database in case a rollback must be done
-        :param session: contains the used login username and working project
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param indata: params to be used for the nsr
         :param kwargs: used to override the indata descriptor
         :param headers: http request headers
-        :param force: If True avoid some dependence checks
-        :param make_public: Make the created item public to all projects
         :return: the _id of nsr descriptor created at database
         """
 
         try:
+            step = "validating input parameters"
             ns_request = self._remove_envelop(indata)
             # Override descriptor with query string kwargs
             self._update_input_with_kwargs(ns_request, kwargs)
-            self._validate_input_new(ns_request, force)
+            self._validate_input_new(ns_request, session["force"])
 
-            step = ""
             # look for nsr
             step = "getting nsd id='{}' from database".format(ns_request.get("nsdId"))
-            _filter = {"_id": ns_request["nsdId"]}
-            _filter.update(BaseTopic._get_project_filter(session, write=False, show_all=True))
+            _filter = self._get_project_filter(session)
+            _filter["_id"] = ns_request["nsdId"]
             nsd = self.db.get_one("nsds", _filter)
+            del _filter["_id"]
 
             nsr_id = str(uuid4())
+
             now = time()
             step = "filling nsr from input data"
             nsr_descriptor = {
@@ -117,30 +217,42 @@ class NsrTopic(BaseTopic):
                 "orchestration-progress": {},
                 # {"networks": {"active": 0, "total": 0}, "vms": {"active": 0, "total": 0}},
 
-                "crete-time": now,
+                "create-time": now,
                 "nsd-name-ref": nsd["name"],
                 "operational-events": [],   # "id", "timestamp", "description", "event",
                 "nsd-ref": nsd["id"],
-                "instantiate_params": ns_request,
+                "nsd-id": nsd["_id"],
+                "vnfd-id": [],
+                "instantiate_params": self._format_ns_request(ns_request),
+                "additionalParamsForNs": self._format_addional_params(ns_request),
                 "ns-instance-config-ref": nsr_id,
                 "id": nsr_id,
                 "_id": nsr_id,
                 # "input-parameter": xpath, value,
-                "ssh-authorized-key": ns_request.get("key-pair-ref"),
+                "ssh-authorized-key": ns_request.get("ssh_keys"),  # TODO remove
             }
             ns_request["nsr_id"] = nsr_id
+            # Create vld
+            if nsd.get("vld"):
+                nsr_descriptor["vld"] = []
+                for nsd_vld in nsd.get("vld"):
+                    nsr_descriptor["vld"].append(
+                        {key: nsd_vld[key] for key in ("id", "vim-network-name", "vim-network-id") if key in nsd_vld})
 
             # Create VNFR
             needed_vnfds = {}
-            for member_vnf in nsd["constituent-vnfd"]:
+            for member_vnf in nsd.get("constituent-vnfd", ()):
                 vnfd_id = member_vnf["vnfd-id-ref"]
                 step = "getting vnfd id='{}' constituent-vnfd='{}' from database".format(
                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
                 if vnfd_id not in needed_vnfds:
                     # Obtain vnfd
-                    vnfd = DescriptorTopic.get_one_by_id(self.db, session, "vnfds", vnfd_id)
+                    _filter["id"] = vnfd_id
+                    vnfd = self.db.get_one("vnfds", _filter, fail_on_empty=True, fail_on_more=True)
+                    del _filter["id"]
                     vnfd.pop("_admin")
                     needed_vnfds[vnfd_id] = vnfd
+                    nsr_descriptor["vnfd-id"].append(vnfd["_id"])
                 else:
                     vnfd = needed_vnfds[vnfd_id]
                 step = "filling vnfr  vnfd-id='{}' constituent-vnfd='{}'".format(
@@ -151,6 +263,8 @@ class NsrTopic(BaseTopic):
                     "_id": vnfr_id,
                     "nsr-id-ref": nsr_id,
                     "member-vnf-index-ref": member_vnf["member-vnf-index"],
+                    "additionalParamsForVnf": self._format_addional_params(ns_request, member_vnf["member-vnf-index"],
+                                                                           vnfd),
                     "created-time": now,
                     # "vnfd": vnfd,        # at OSM model.but removed to avoid data duplication TODO: revise
                     "vnfd-ref": vnfd_id,
@@ -160,6 +274,16 @@ class NsrTopic(BaseTopic):
                     "connection-point": [],
                     "ip-address": None,  # mgmt-interface filled by LCM
                 }
+
+                # Create vld
+                if vnfd.get("internal-vld"):
+                    vnfr_descriptor["vld"] = []
+                    for vnfd_vld in vnfd.get("internal-vld"):
+                        vnfr_descriptor["vld"].append(
+                            {key: vnfd_vld[key] for key in ("id", "vim-network-name", "vim-network-id") if key in
+                             vnfd_vld})
+
+                vnfd_mgmt_cp = vnfd["mgmt-interface"].get("cp")
                 for cp in vnfd.get("connection-point", ()):
                     vnf_cp = {
                         "name": cp["name"],
@@ -169,7 +293,7 @@ class NsrTopic(BaseTopic):
                         # vim-id  # TODO it would be nice having a vim port id
                     }
                     vnfr_descriptor["connection-point"].append(vnf_cp)
-                for vdu in vnfd["vdu"]:
+                for vdu in vnfd.get("vdu", ()):
                     vdur = {
                         "vdu-id-ref": vdu["id"],
                         # TODO      "name": ""     Name of the VDU in the VIM
@@ -196,8 +320,32 @@ class NsrTopic(BaseTopic):
                             # "ip-address", "mac-address" # filled by LCM
                             # vim-id  # TODO it would be nice having a vim port id
                         }
+                        if vnfd_mgmt_cp and iface.get("external-connection-point-ref") == vnfd_mgmt_cp:
+                            vdu_iface["mgmt-vnf"] = True
                         if iface.get("mgmt-interface"):
-                            vdu_iface["mgmt-interface"] = True
+                            vdu_iface["mgmt-interface"] = True  # TODO change to mgmt-vdu
+
+                        # look for network where this interface is connected
+                        if iface.get("external-connection-point-ref"):
+                            for nsd_vld in get_iterable(nsd.get("vld")):
+                                for nsd_vld_cp in get_iterable(nsd_vld.get("vnfd-connection-point-ref")):
+                                    if nsd_vld_cp.get("vnfd-connection-point-ref") == \
+                                            iface["external-connection-point-ref"] and \
+                                            nsd_vld_cp.get("member-vnf-index-ref") == member_vnf["member-vnf-index"]:
+                                        vdu_iface["ns-vld-id"] = nsd_vld["id"]
+                                        break
+                                else:
+                                    continue
+                                break
+                        elif iface.get("internal-connection-point-ref"):
+                            for vnfd_ivld in get_iterable(vnfd.get("internal-vld")):
+                                for vnfd_ivld_icp in get_iterable(vnfd_ivld.get("internal-connection-point")):
+                                    if vnfd_ivld_icp.get("id-ref") == iface["internal-connection-point-ref"]:
+                                        vdu_iface["vnf-vld-id"] = vnfd_ivld["id"]
+                                        break
+                                else:
+                                    continue
+                                break
 
                         vdur["interfaces"].append(vdu_iface)
                     count = vdu.get("count", 1)
@@ -215,23 +363,27 @@ class NsrTopic(BaseTopic):
                     member_vnf["vnfd-id-ref"], member_vnf["member-vnf-index"])
 
                 # add at database
-                BaseTopic.format_on_new(vnfr_descriptor, session["project_id"], make_public=make_public)
+                self.format_on_new(vnfr_descriptor, session["project_id"], make_public=session["public"])
                 self.db.create("vnfrs", vnfr_descriptor)
                 rollback.append({"topic": "vnfrs", "_id": vnfr_id})
                 nsr_descriptor["constituent-vnfr-ref"].append(vnfr_id)
 
             step = "creating nsr at database"
-            self.format_on_new(nsr_descriptor, session["project_id"], make_public=make_public)
+            self.format_on_new(nsr_descriptor, session["project_id"], make_public=session["public"])
             self.db.create("nsrs", nsr_descriptor)
             rollback.append({"topic": "nsrs", "_id": nsr_id})
-            return nsr_id
+
+            step = "creating nsr temporal folder"
+            self.fs.mkdir(nsr_id)
+
+            return nsr_id, None
+        except ValidationError as e:   # TODO remove try Except, it is captured at nbi.py
+            raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
         except Exception as e:
             self.logger.exception("Exception {} at NsrTopic.new()".format(e), exc_info=True)
             raise EngineException("Error {}: {}".format(step, e))
-        except ValidationError as e:
-            raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
 
-    def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
+    def edit(self, session, _id, indata=None, kwargs=None, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
 
@@ -242,13 +394,13 @@ class VnfrTopic(BaseTopic):
     def __init__(self, db, fs, msg):
         BaseTopic.__init__(self, db, fs, msg)
 
-    def delete(self, session, _id, force=False, dry_run=False):
+    def delete(self, session, _id, dry_run=False):
         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
-    def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
+    def edit(self, session, _id, indata=None, kwargs=None, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
-    def new(self, rollback, session, indata=None, kwargs=None, headers=None, force=False, make_public=False):
+    def new(self, rollback, session, indata=None, kwargs=None, headers=None):
         # Not used because vnfrs are created and deleted by NsrTopic class directly
         raise EngineException("Method new called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
@@ -269,13 +421,14 @@ class NsLcmOpTopic(BaseTopic):
     def _check_ns_operation(self, session, nsr, operation, indata):
         """
         Check that user has enter right parameters for the operation
-        :param session:
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param operation: it can be: instantiate, terminate, action, TODO: update, heal
         :param indata: descriptor with the parameters of the operation
         :return: None
         """
         vnfds = {}
         vim_accounts = []
+        wim_accounts = []
         nsd = nsr["nsd"]
 
         def check_valid_vnf_member_index(member_vnf_index):
@@ -290,6 +443,13 @@ class NsLcmOpTopic(BaseTopic):
                 raise EngineException("Invalid parameter member_vnf_index='{}' is not one of the "
                                       "nsd:constituent-vnfd".format(member_vnf_index))
 
+        def check_valid_vdu(vnfd, vdu_id):
+            for vdud in get_iterable(vnfd.get("vdu")):
+                if vdud["id"] == vdu_id:
+                    return vdud
+            else:
+                raise EngineException("Invalid parameter vdu_id='{}' not present at vnfd:vdu:id".format(vdu_id))
+
         def _check_vnf_instantiation_params(in_vnfd, vnfd):
 
             for in_vdu in get_iterable(in_vnfd.get("vdu")):
@@ -341,22 +501,41 @@ class NsLcmOpTopic(BaseTopic):
             if vim_account in vim_accounts:
                 return
             try:
-                db_filter = self._get_project_filter(session, write=False, show_all=True)
+                db_filter = self._get_project_filter(session)
                 db_filter["_id"] = vim_account
                 self.db.get_one("vim_accounts", db_filter)
             except Exception:
                 raise EngineException("Invalid vimAccountId='{}' not present for the project".format(vim_account))
             vim_accounts.append(vim_account)
 
+        def check_valid_wim_account(wim_account):
+            if not isinstance(wim_account, str):
+                return
+            elif wim_account in wim_accounts:
+                return
+            try:
+                db_filter = self._get_project_filter(session, write=False, show_all=True)
+                db_filter["_id"] = wim_account
+                self.db.get_one("wim_accounts", db_filter)
+            except Exception:
+                raise EngineException("Invalid wimAccountId='{}' not present for the project".format(wim_account))
+            wim_accounts.append(wim_account)
+
         if operation == "action":
             # check vnf_member_index
             if indata.get("vnf_member_index"):
                 indata["member_vnf_index"] = indata.pop("vnf_member_index")    # for backward compatibility
-            if not indata.get("member_vnf_index"):
-                raise EngineException("Missing 'member_vnf_index' parameter")
-            vnfd = check_valid_vnf_member_index(indata["member_vnf_index"])
+            if indata.get("member_vnf_index"):
+                vnfd = check_valid_vnf_member_index(indata["member_vnf_index"])
+                if indata.get("vdu_id"):
+                    vdud = check_valid_vdu(vnfd, indata["vdu_id"])
+                    descriptor_configuration = vdud.get("vdu-configuration", {}).get("config-primitive")
+                else:
+                    descriptor_configuration = vnfd.get("vnf-configuration", {}).get("config-primitive")
+            else:  # use a NSD
+                descriptor_configuration = nsd.get("ns-configuration", {}).get("config-primitive")
             # check primitive
-            for config_primitive in get_iterable(vnfd.get("vnf-configuration", {}).get("config-primitive")):
+            for config_primitive in get_iterable(descriptor_configuration):
                 if indata["primitive"] == config_primitive["name"]:
                     # check needed primitive_params are provided
                     if indata.get("primitive_params"):
@@ -371,11 +550,11 @@ class NsLcmOpTopic(BaseTopic):
                                 paramd["name"], indata["primitive"]))
                     # check no extra primitive params are provided
                     if in_primitive_params_copy:
-                        raise EngineException("parameter/s '{}' not present at vnfd for primitive '{}'".format(
+                        raise EngineException("parameter/s '{}' not present at vnfd /nsd for primitive '{}'".format(
                             list(in_primitive_params_copy.keys()), indata["primitive"]))
                     break
             else:
-                raise EngineException("Invalid primitive '{}' is not present at vnfd".format(indata["primitive"]))
+                raise EngineException("Invalid primitive '{}' is not present at vnfd/nsd".format(indata["primitive"]))
         if operation == "scale":
             vnfd = check_valid_vnf_member_index(indata["scaleVnfData"]["scaleByStepData"]["member-vnf-index"])
             for scaling_group in get_iterable(vnfd.get("scaling-group-descriptor")):
@@ -388,6 +567,7 @@ class NsLcmOpTopic(BaseTopic):
         if operation == "instantiate":
             # check vim_account
             check_valid_vim_account(indata["vimAccountId"])
+            check_valid_wim_account(indata.get("wimAccountId"))
             for in_vnf in get_iterable(indata.get("vnf")):
                 vnfd = check_valid_vnf_member_index(in_vnf["member-vnf-index"])
                 _check_vnf_instantiation_params(in_vnf, vnfd)
@@ -395,6 +575,7 @@ class NsLcmOpTopic(BaseTopic):
                     check_valid_vim_account(in_vnf["vimAccountId"])
 
             for in_vld in get_iterable(indata.get("vld")):
+                check_valid_wim_account(in_vld.get("wimAccountId"))
                 for vldd in get_iterable(nsd.get("vld")):
                     if in_vld["name"] == vldd["name"] or in_vld["name"] == vldd["id"]:
                         break
@@ -402,26 +583,38 @@ class NsLcmOpTopic(BaseTopic):
                     raise EngineException("Invalid parameter vld:name='{}' is not present at nsd:vld".format(
                         in_vld["name"]))
 
-    def _look_for_pdu(self, session, rollback, vnfr, vim_account):
+    def _look_for_pdu(self, session, rollback, vnfr, vim_account, vnfr_update, vnfr_update_rollback):
         """
-        Look for a free PDU in the catalog matching vdur type and interfaces. Fills vdur with ip_address information
-        :param vdur: vnfr:vdur descriptor. It is modified with pdu interface info if pdu is found
-        :param member_vnf_index: used just for logging. Target vnfd of nsd
-        :param vim_account:
-        :return: vder_update: dictionary to update vnfr:vdur with pdu info. In addition it modified choosen pdu to set
-        at status IN_USE
+        Look for a free PDU in the catalog matching vdur type and interfaces. Fills vnfr.vdur with the interface
+        (ip_address, ...) information.
+        Modifies PDU _admin.usageState to 'IN_USE'
+        
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
+        :param rollback: list with the database modifications to rollback if needed
+        :param vnfr: vnfr to be updated. It is modified with pdu interface info if pdu is found
+        :param vim_account: vim_account where this vnfr should be deployed
+        :param vnfr_update: dictionary filled by this method with changes to be done at database vnfr
+        :param vnfr_update_rollback: dictionary filled by this method with original content of vnfr in case a rollback
+                                     of the changed vnfr is needed
+
+        :return: List of PDU interfaces that are connected to an existing VIM network. Each item contains:
+                 "vim-network-name": used at VIM
+                  "name": interface name
+                  "vnf-vld-id": internal VNFD vld where this interface is connected, or
+                  "ns-vld-id": NSD vld where this interface is connected.
+                  NOTE: One, and only one between 'vnf-vld-id' and 'ns-vld-id' contains a value. The other will be None
         """
-        vnfr_update = {}
-        rollback_vnfr = {}
+
+        ifaces_forcing_vim_network = []
         for vdur_index, vdur in enumerate(get_iterable(vnfr.get("vdur"))):
             if not vdur.get("pdu-type"):
                 continue
             pdu_type = vdur.get("pdu-type")
-            pdu_filter = self._get_project_filter(session, write=True, show_all=True)
-            pdu_filter["vim.vim_accounts"] = vim_account
+            pdu_filter = self._get_project_filter(session)
+            pdu_filter["vim_accounts"] = vim_account
             pdu_filter["type"] = pdu_type
             pdu_filter["_admin.operationalState"] = "ENABLED"
-            pdu_filter["_admin.usageState"] = "NOT_IN_USE",
+            pdu_filter["_admin.usageState"] = "NOT_IN_USE"
             # TODO feature 1417: "shared": True,
 
             available_pdus = self.db.get_list("pdus", pdu_filter)
@@ -440,8 +633,8 @@ class NsLcmOpTopic(BaseTopic):
                     break
             else:
                 raise EngineException(
-                    "No PDU of type={} found for member_vnf_index={} at vim_account={} matching interface "
-                    "names".format(vdur["vdu-id-ref"], vnfr["member-vnf-index-ref"], pdu_type))
+                    "No PDU of type={} at vim_account={} found for member_vnf_index={}, vdu={} matching interface "
+                    "names".format(pdu_type, vim_account, vnfr["member-vnf-index-ref"], vdur["vdu-id-ref"]))
 
             # step 2. Update pdu
             rollback_pdu = {
@@ -452,29 +645,45 @@ class NsLcmOpTopic(BaseTopic):
             }
             self.db.set_one("pdus", {"_id": pdu["_id"]},
                             {"_admin.usageState": "IN_USE",
-                             "_admin.usage.vnfr_id": vnfr["_id"],
-                             "_admin.usage.nsr_id": vnfr["nsr-id-ref"],
-                             "_admin.usage.vdur": vdur["vdu-id-ref"]}
-                            )
+                             "_admin.usage": {"vnfr_id": vnfr["_id"],
+                                              "nsr_id": vnfr["nsr-id-ref"],
+                                              "vdur": vdur["vdu-id-ref"]}
+                             })
             rollback.append({"topic": "pdus", "_id": pdu["_id"], "operation": "set", "content": rollback_pdu})
 
             # step 3. Fill vnfr info by filling vdur
             vdu_text = "vdur.{}".format(vdur_index)
-            rollback_vnfr[vdu_text + ".pdu-id"] = None
+            vnfr_update_rollback[vdu_text + ".pdu-id"] = None
             vnfr_update[vdu_text + ".pdu-id"] = pdu["_id"]
             for iface_index, vdur_interface in enumerate(vdur["interfaces"]):
                 for pdu_interface in pdu["interfaces"]:
                     if pdu_interface["name"] == vdur_interface["name"]:
                         iface_text = vdu_text + ".interfaces.{}".format(iface_index)
                         for k, v in pdu_interface.items():
-                            vnfr_update[iface_text + ".{}".format(k)] = v
-                            rollback_vnfr[iface_text + ".{}".format(k)] = vdur_interface.get(v)
+                            if k in ("ip-address", "mac-address"):  # TODO: switch-xxxxx must be inserted
+                                vnfr_update[iface_text + ".{}".format(k)] = v
+                                vnfr_update_rollback[iface_text + ".{}".format(k)] = vdur_interface.get(v)
+                        if pdu_interface.get("ip-address"):
+                            if vdur_interface.get("mgmt-interface"):
+                                vnfr_update_rollback[vdu_text + ".ip-address"] = vdur.get("ip-address")
+                                vnfr_update[vdu_text + ".ip-address"] = pdu_interface["ip-address"]
+                            if vdur_interface.get("mgmt-vnf"):
+                                vnfr_update_rollback["ip-address"] = vnfr.get("ip-address")
+                                vnfr_update["ip-address"] = pdu_interface["ip-address"]
+                        if pdu_interface.get("vim-network-name") or pdu_interface.get("vim-network-id"):
+                            ifaces_forcing_vim_network.append({
+                                "name": vdur_interface.get("vnf-vld-id") or vdur_interface.get("ns-vld-id"),
+                                "vnf-vld-id": vdur_interface.get("vnf-vld-id"),
+                                "ns-vld-id": vdur_interface.get("ns-vld-id")})
+                            if pdu_interface.get("vim-network-id"):
+                                ifaces_forcing_vim_network.append({
+                                    "vim-network-id": pdu_interface.get("vim-network-id")})
+                            if pdu_interface.get("vim-network-name"):
+                                ifaces_forcing_vim_network.append({
+                                    "vim-network-name": pdu_interface.get("vim-network-name")})
                         break
 
-        if vnfr_update:
-            self.db.set_one("vnfrs", {"_id": vnfr["_id"]}, vnfr_update)
-            rollback.append({"topic": "vnfrs", "_id": vnfr["_id"], "operation": "set", "content": rollback_vnfr})
-        return
+        return ifaces_forcing_vim_network
 
     def _update_vnfrs(self, session, rollback, nsr, indata):
         vnfrs = None
@@ -500,10 +709,42 @@ class NsLcmOpTopic(BaseTopic):
             vnfr_update_rollback["vim-account-id"] = vnfr.get("vim-account-id")
 
             # get pdu
-            self._look_for_pdu(session, rollback, vnfr, vim_account)
-            # TODO change instantiation parameters to set network
+            ifaces_forcing_vim_network = self._look_for_pdu(session, rollback, vnfr, vim_account, vnfr_update,
+                                                            vnfr_update_rollback)
+
+            # updata database vnfr
+            self.db.set_one("vnfrs", {"_id": vnfr["_id"]}, vnfr_update)
+            rollback.append({"topic": "vnfrs", "_id": vnfr["_id"], "operation": "set", "content": vnfr_update_rollback})
+
+            # Update indada in case pdu forces to use a concrete vim-network-name
+            # TODO check if user has already insert a vim-network-name and raises an error
+            if not ifaces_forcing_vim_network:
+                continue
+            for iface_info in ifaces_forcing_vim_network:
+                if iface_info.get("ns-vld-id"):
+                    if "vld" not in indata:
+                        indata["vld"] = []
+                    indata["vld"].append({key: iface_info[key] for key in
+                                          ("name", "vim-network-name", "vim-network-id") if iface_info.get(key)})
+
+                elif iface_info.get("vnf-vld-id"):
+                    if "vnf" not in indata:
+                        indata["vnf"] = []
+                    indata["vnf"].append({
+                        "member-vnf-index": member_vnf_index,
+                        "internal-vld": [{key: iface_info[key] for key in
+                                          ("name", "vim-network-name", "vim-network-id") if iface_info.get(key)}]
+                    })
 
-    def _create_nslcmop(self, session, nsInstanceId, operation, params):
+    @staticmethod
+    def _create_nslcmop(nsr_id, operation, params):
+        """
+        Creates a ns-lcm-opp content to be stored at database.
+        :param nsr_id: internal id of the instance
+        :param operation: instantiate, terminate, scale, action, ...
+        :param params: user parameters for the operation
+        :return: dictionary following SOL005 format
+        """
         now = time()
         _id = str(uuid4())
         nslcmop = {
@@ -511,7 +752,7 @@ class NsLcmOpTopic(BaseTopic):
             "_id": _id,
             "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
             "statusEnteredTime": now,
-            "nsInstanceId": nsInstanceId,
+            "nsInstanceId": nsr_id,
             "lcmOperationType": operation,
             "startTime": now,
             "isAutomaticInvocation": False,
@@ -519,26 +760,32 @@ class NsLcmOpTopic(BaseTopic):
             "isCancelPending": False,
             "links": {
                 "self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id,
-                "nsInstance": "/osm/nslcm/v1/ns_instances/" + nsInstanceId,
+                "nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id,
             }
         }
         return nslcmop
 
-    def new(self, rollback, session, indata=None, kwargs=None, headers=None, force=False, make_public=False,
-            slice_object=False):
+    def new(self, rollback, session, indata=None, kwargs=None, headers=None, slice_object=False):
         """
         Performs a new operation over a ns
         :param rollback: list to append created items at database in case a rollback must to be done
-        :param session: contains the used login username and working project
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param indata: descriptor with the parameters of the operation. It must contains among others
             nsInstanceId: _id of the nsr to perform the operation
             operation: it can be: instantiate, terminate, action, TODO: update, heal
         :param kwargs: used to override the indata descriptor
         :param headers: http request headers
-        :param force: If True avoid some dependence checks
-        :param make_public: Make the created item public to all projects
         :return: id of the nslcmops
         """
+        def check_if_nsr_is_not_slice_member(session, nsr_id):
+            nsis = None
+            db_filter = self._get_project_filter(session)
+            db_filter["_admin.nsrs-detailed-list.ANYINDEX.nsrId"] = nsr_id
+            nsis = self.db.get_one("nsis", db_filter, fail_on_empty=False, fail_on_more=False)
+            if nsis:
+                raise EngineException("The NS instance {} cannot be terminate because is used by the slice {}".format(
+                                      nsr_id, nsis["_id"]), http_code=HTTPStatus.CONFLICT)
+
         try:
             # Override descriptor with query string kwargs
             self._update_input_with_kwargs(indata, kwargs)
@@ -547,41 +794,45 @@ class NsLcmOpTopic(BaseTopic):
 
             validate_input(indata, self.operation_schema[operation])
             # get ns from nsr_id
-            _filter = BaseTopic._get_project_filter(session, write=True, show_all=False)
+            _filter = BaseTopic._get_project_filter(session)
             _filter["_id"] = nsInstanceId
             nsr = self.db.get_one("nsrs", _filter)
 
             # initial checking
+            if operation == "terminate" and slice_object is False:
+                check_if_nsr_is_not_slice_member(session, nsr["_id"])
             if not nsr["_admin"].get("nsState") or nsr["_admin"]["nsState"] == "NOT_INSTANTIATED":
                 if operation == "terminate" and indata.get("autoremove"):
                     # NSR must be deleted
-                    return self.delete(session, nsInstanceId)
+                    return None    # a none in this case is used to indicate not instantiated. It can be removed
                 if operation != "instantiate":
                     raise EngineException("ns_instance '{}' cannot be '{}' because it is not instantiated".format(
                         nsInstanceId, operation), HTTPStatus.CONFLICT)
             else:
-                if operation == "instantiate" and not indata.get("force"):
+                if operation == "instantiate" and not session["force"]:
                     raise EngineException("ns_instance '{}' cannot be '{}' because it is already instantiated".format(
                         nsInstanceId, operation), HTTPStatus.CONFLICT)
             self._check_ns_operation(session, nsr, operation, indata)
+
             if operation == "instantiate":
                 self._update_vnfrs(session, rollback, nsr, indata)
-            nslcmop_desc = self._create_nslcmop(session, nsInstanceId, operation, indata)
-            self.format_on_new(nslcmop_desc, session["project_id"], make_public=make_public)
+
+            nslcmop_desc = self._create_nslcmop(nsInstanceId, operation, indata)
+            self.format_on_new(nslcmop_desc, session["project_id"], make_public=session["public"])
             _id = self.db.create("nslcmops", nslcmop_desc)
             rollback.append({"topic": "nslcmops", "_id": _id})
             if not slice_object:
                 self.msg.write("ns", operation, nslcmop_desc)
-            return _id
-        except ValidationError as e:
+            return _id, None
+        except ValidationError as e:  # TODO remove try Except, it is captured at nbi.py
             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
         # except DbException as e:
         #     raise EngineException("Cannot get ns_instance '{}': {}".format(e), HTTPStatus.NOT_FOUND)
 
-    def delete(self, session, _id, force=False, dry_run=False):
+    def delete(self, session, _id, dry_run=False):
         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
-    def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
+    def edit(self, session, _id, indata=None, kwargs=None, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
 
@@ -591,11 +842,38 @@ class NsiTopic(BaseTopic):
 
     def __init__(self, db, fs, msg):
         BaseTopic.__init__(self, db, fs, msg)
+        self.nsrTopic = NsrTopic(db, fs, msg)
+
+    @staticmethod
+    def _format_ns_request(ns_request):
+        formated_request = copy(ns_request)
+        # TODO: Add request params
+        return formated_request
+
+    @staticmethod
+    def _format_addional_params(slice_request):
+        """
+        Get and format user additional params for NS or VNF
+        :param slice_request: User instantiation additional parameters
+        :return: a formatted copy of additional params or None if not supplied
+        """
+        additional_params = copy(slice_request.get("additionalParamsForNsi"))
+        if additional_params:
+            for k, v in additional_params.items():
+                if not isinstance(k, str):
+                    raise EngineException("Invalid param at additionalParamsForNsi:{}. Only string keys are allowed".
+                                          format(k))
+                if "." in k or "$" in k:
+                    raise EngineException("Invalid param at additionalParamsForNsi:{}. Keys must not contain dots or $".
+                                          format(k))
+                if isinstance(v, (dict, tuple, list)):
+                    additional_params[k] = "!!yaml " + safe_dump(v)
+        return additional_params
 
     def _check_descriptor_dependencies(self, session, descriptor):
         """
         Check that the dependent descriptors exist on a new descriptor or edition
-        :param session: client session information
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param descriptor: descriptor to be inserted or edit
         :return: None or raises exception
         """
@@ -606,148 +884,275 @@ class NsiTopic(BaseTopic):
             raise EngineException("Descriptor error at nst-ref='{}' references a non exist nstd".format(nstd_id),
                                   http_code=HTTPStatus.CONFLICT)
 
-    @staticmethod
-    def format_on_new(content, project_id=None, make_public=False):
-        BaseTopic.format_on_new(content, project_id=project_id, make_public=make_public)
-
-    def check_conflict_on_del(self, session, _id, force=False):
-        if force:
+    def check_conflict_on_del(self, session, _id, db_content):
+        """
+        Check that NSI is not instantiated
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
+        :param _id: nsi internal id
+        :param db_content: The database content of the _id
+        :return: None or raises EngineException with the conflict
+        """
+        if session["force"]:
             return
-        nsi = self.db.get_one("nsis", {"_id": _id})
+        nsi = db_content
         if nsi["_admin"].get("nsiState") == "INSTANTIATED":
             raise EngineException("nsi '{}' cannot be deleted because it is in 'INSTANTIATED' state. "
                                   "Launch 'terminate' operation first; or force deletion".format(_id),
                                   http_code=HTTPStatus.CONFLICT)
 
-    def delete(self, session, _id, force=False, dry_run=False):
+    def delete_extra(self, session, _id, db_content):
         """
-        Delete item by its internal _id
-        :param session: contains the used login username, working project, and admin rights
+        Deletes associated nsilcmops from database. Deletes associated filesystem.
+         Set usageState of nst
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param _id: server internal id
-        :param force: indicates if deletion must be forced in case of conflict
-        :param dry_run: make checking but do not delete
-        :return: dictionary with deleted item _id. It raises EngineException on error: not found, conflict, ...
+        :param db_content: The database content of the descriptor
+        :return: None if ok or raises EngineException with the problem
         """
-        # TODO add admin to filter, validate rights
-        BaseTopic.delete(self, session, _id, force, dry_run=True)
-        if dry_run:
-            return
 
-        # deletes NetSlice instance object
-        v = self.db.del_one("nsis", {"_id": _id})
-
-        # makes a temporal list of nsilcmops objects related to the _id given and deletes them from db
-        _filter = {"netsliceInstanceId": _id} 
-        self.db.del_list("nsilcmops", _filter)
-
-        _filter = {"operationParams.netsliceInstanceId": _id}
-        nslcmops_list = self.db.get_list("nslcmops", _filter)
-
-        for id_item in nslcmops_list:
-            _filter = {"_id": id_item}
-            nslcmop = self.db.get_one("nslcmops", _filter)
-            nsr_id = nslcmop["operationParams"]["nsr_id"]
-            NsrTopic.delete(self, session, nsr_id, force=False, dry_run=False)
-        self._send_msg("deleted", {"_id": _id})
-        return v
-
-    def new(self, rollback, session, indata=None, kwargs=None, headers=None, force=False, make_public=False):
+        # Deleting the nsrs belonging to nsir
+        nsir = db_content
+        for nsrs_detailed_item in nsir["_admin"]["nsrs-detailed-list"]:
+            nsr_id = nsrs_detailed_item["nsrId"]
+            if nsrs_detailed_item.get("shared"):
+                _filter = {"_admin.nsrs-detailed-list.ANYINDEX.shared": True,
+                           "_admin.nsrs-detailed-list.ANYINDEX.nsrId": nsr_id,
+                           "_id.ne": nsir["_id"]}
+                nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
+                if nsi:  # last one using nsr
+                    continue
+            try:
+                self.nsrTopic.delete(session, nsr_id, dry_run=False)
+            except (DbException, EngineException) as e:
+                if e.http_code == HTTPStatus.NOT_FOUND:
+                    pass
+                else:
+                    raise
+
+        # delete related nsilcmops database entries
+        self.db.del_list("nsilcmops", {"netsliceInstanceId": _id})
+
+        # Check and set used NST usage state
+        nsir_admin = nsir.get("_admin")
+        if nsir_admin and nsir_admin.get("nst-id"):
+            # check if used by another NSI
+            nsis_list = self.db.get_one("nsis", {"nst-id": nsir_admin["nst-id"]},
+                                        fail_on_empty=False, fail_on_more=False)
+            if not nsis_list:
+                self.db.set_one("nsts", {"_id": nsir_admin["nst-id"]}, {"_admin.usageState": "NOT_IN_USE"})
+
+    # def delete(self, session, _id, dry_run=False):
+    #     """
+    #     Delete item by its internal _id
+    #     :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
+    #     :param _id: server internal id
+    #     :param dry_run: make checking but do not delete
+    #     :return: dictionary with deleted item _id. It raises EngineException on error: not found, conflict, ...
+    #     """
+    #     # TODO add admin to filter, validate rights
+    #     BaseTopic.delete(self, session, _id, dry_run=True)
+    #     if dry_run:
+    #         return
+    #
+    #     # Deleting the nsrs belonging to nsir
+    #     nsir = self.db.get_one("nsis", {"_id": _id})
+    #     for nsrs_detailed_item in nsir["_admin"]["nsrs-detailed-list"]:
+    #         nsr_id = nsrs_detailed_item["nsrId"]
+    #         if nsrs_detailed_item.get("shared"):
+    #             _filter = {"_admin.nsrs-detailed-list.ANYINDEX.shared": True,
+    #                        "_admin.nsrs-detailed-list.ANYINDEX.nsrId": nsr_id,
+    #                        "_id.ne": nsir["_id"]}
+    #             nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
+    #             if nsi:  # last one using nsr
+    #                 continue
+    #         try:
+    #             self.nsrTopic.delete(session, nsr_id, dry_run=False)
+    #         except (DbException, EngineException) as e:
+    #             if e.http_code == HTTPStatus.NOT_FOUND:
+    #                 pass
+    #             else:
+    #                 raise
+    #     # deletes NetSlice instance object
+    #     v = self.db.del_one("nsis", {"_id": _id})
+    #
+    #     # makes a temporal list of nsilcmops objects related to the _id given and deletes them from db
+    #     _filter = {"netsliceInstanceId": _id}
+    #     self.db.del_list("nsilcmops", _filter)
+    #
+    #     # Search if nst is being used by other nsi
+    #     nsir_admin = nsir.get("_admin")
+    #     if nsir_admin:
+    #         if nsir_admin.get("nst-id"):
+    #             nsis_list = self.db.get_one("nsis", {"nst-id": nsir_admin["nst-id"]},
+    #                                         fail_on_empty=False, fail_on_more=False)
+    #             if not nsis_list:
+    #                 self.db.set_one("nsts", {"_id": nsir_admin["nst-id"]}, {"_admin.usageState": "NOT_IN_USE"})
+    #     return v
+
+    def new(self, rollback, session, indata=None, kwargs=None, headers=None):
         """
         Creates a new netslice instance record into database. It also creates needed nsrs and vnfrs
         :param rollback: list to append the created items at database in case a rollback must be done
-        :param session: contains the used login username and working project
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param indata: params to be used for the nsir
         :param kwargs: used to override the indata descriptor
         :param headers: http request headers
-        :param force: If True avoid some dependence checks
-        :param make_public: Make the created item public to all projects
         :return: the _id of nsi descriptor created at database
         """
 
         try:
+            step = ""
             slice_request = self._remove_envelop(indata)
             # Override descriptor with query string kwargs
             self._update_input_with_kwargs(slice_request, kwargs)
-            self._validate_input_new(slice_request, force)
+            self._validate_input_new(slice_request, session["force"])
 
-            step = ""
             # look for nstd
-            self.logger.info(str(slice_request))
-            step = "getting nstd id='{}' from database".format(slice_request.get("nstdId"))
-            _filter = {"id": slice_request["nstdId"]}
-            _filter.update(BaseTopic._get_project_filter(session, write=False, show_all=True))
+            step = "getting nstd id='{}' from database".format(slice_request.get("nstId"))
+            _filter = self._get_project_filter(session)
+            _filter["_id"] = slice_request["nstId"]
             nstd = self.db.get_one("nsts", _filter)
+            del _filter["_id"]
+
             nstd.pop("_admin", None)
-            nstd.pop("_id", None)
+            nstd_id = nstd.pop("_id", None)
             nsi_id = str(uuid4())
             step = "filling nsi_descriptor with input data"
 
-            # "instantiation-parameters.netslice-subnet": []
-            # TODO: Equal as template for now
+            # Creating the NSIR
             nsi_descriptor = {
                 "id": nsi_id,
+                "name": slice_request["nsiName"],
+                "description": slice_request.get("nsiDescription", ""),
+                "datacenter": slice_request["vimAccountId"],
                 "nst-ref": nstd["id"],
-                "instantiation-parameters": {
-                    "netslice-subnet": []
-                },
+                "instantiation_parameters": slice_request,
                 "network-slice-template": nstd,
+                "nsr-ref-list": [],
+                "vlr-list": [],
                 "_id": nsi_id,
+                "additionalParamsForNsi": self._format_addional_params(slice_request)
             }
 
+            step = "creating nsi at database"
+            self.format_on_new(nsi_descriptor, session["project_id"], make_public=session["public"])
+            nsi_descriptor["_admin"]["nsiState"] = "NOT_INSTANTIATED"
+            nsi_descriptor["_admin"]["netslice-subnet"] = None
+            nsi_descriptor["_admin"]["deployed"] = {}
+            nsi_descriptor["_admin"]["deployed"]["RO"] = []
+            nsi_descriptor["_admin"]["nst-id"] = nstd_id
+
+            # Creating netslice-vld for the RO.
+            step = "creating netslice-vld at database"
+
+            # Building the vlds list to be deployed
+            # From netslice descriptors, creating the initial list
+            nsi_vlds = []
+
+            for netslice_vlds in get_iterable(nstd.get("netslice-vld")):
+                # Getting template Instantiation parameters from NST
+                nsi_vld = deepcopy(netslice_vlds)
+                nsi_vld["shared-nsrs-list"] = []
+                nsi_vld["vimAccountId"] = slice_request["vimAccountId"]
+                nsi_vlds.append(nsi_vld)
+
+            nsi_descriptor["_admin"]["netslice-vld"] = nsi_vlds
             # Creating netslice-subnet_record. 
             needed_nsds = {}
             services = []
+
+            # Updating the nstd with the nsd["_id"] associated to the nss -> services list
             for member_ns in nstd["netslice-subnet"]:
                 nsd_id = member_ns["nsd-ref"]
                 step = "getting nstd id='{}' constituent-nsd='{}' from database".format(
                     member_ns["nsd-ref"], member_ns["id"])
                 if nsd_id not in needed_nsds:
                     # Obtain nsd
-                    nsd = DescriptorTopic.get_one_by_id(self.db, session, "nsds", nsd_id)
+                    _filter["id"] = nsd_id
+                    nsd = self.db.get_one("nsds", _filter, fail_on_empty=True, fail_on_more=True)
+                    del _filter["id"]
                     nsd.pop("_admin")
                     needed_nsds[nsd_id] = nsd
-                    member_ns["_id"] = needed_nsds[nsd_id].get("_id")
-                    services.append(member_ns)
                 else:
                     nsd = needed_nsds[nsd_id]
-                    member_ns["_id"] = needed_nsds[nsd_id].get("_id")
-                    services.append(member_ns)
+                member_ns["_id"] = needed_nsds[nsd_id].get("_id")
+                services.append(member_ns)
 
                 step = "filling nsir nsd-id='{}' constituent-nsd='{}' from database".format(
                     member_ns["nsd-ref"], member_ns["id"])
 
-            step = "creating nsi at database"
-            self.format_on_new(nsi_descriptor, session["project_id"], make_public=make_public)
-            nsi_descriptor["_admin"]["nsiState"] = "NOT_INSTANTIATED"          
-
             # creates Network Services records (NSRs)
             step = "creating nsrs at database using NsrTopic.new()"
+            ns_params = slice_request.get("netslice-subnet")
             nsrs_list = []
+            nsi_netslice_subnet = []
             for service in services:
+                # Check if the netslice-subnet is shared and if it is share if the nss exists
+                _id_nsr = None
                 indata_ns = {}
-                indata_ns["nsdId"] = service["_id"]
-                indata_ns["nsName"] = service["name"]
-                indata_ns["vimAccountId"] = indata.get("vimAccountId")
-                indata_ns["nsDescription"] = service["description"]
-                indata_ns["key-pair-ref"] = None
-                # NsrTopic(rollback, session, indata_ns, kwargs, headers, force)
-                _id_nsr = NsrTopic.new(self, rollback, session, indata_ns, kwargs, headers, force)
-                nsrs_item = {"nsrId": _id_nsr}
+                # Is the nss shared and instantiated?
+                _filter["_admin.nsrs-detailed-list.ANYINDEX.shared"] = True
+                _filter["_admin.nsrs-detailed-list.ANYINDEX.nsd-id"] = service["nsd-ref"]
+                _filter["_admin.nsrs-detailed-list.ANYINDEX.nss-id"] = service["id"]
+                nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
+                if nsi and service.get("is-shared-nss"):
+                    nsrs_detailed_list = nsi["_admin"]["nsrs-detailed-list"]
+                    for nsrs_detailed_item in nsrs_detailed_list:
+                        if nsrs_detailed_item["nsd-id"] == service["nsd-ref"]:
+                            if nsrs_detailed_item["nss-id"] == service["id"]:
+                                _id_nsr = nsrs_detailed_item["nsrId"]
+                                break
+                    for netslice_subnet in nsi["_admin"]["netslice-subnet"]:
+                        if netslice_subnet["nss-id"] == service["id"]:
+                            indata_ns = netslice_subnet
+                            break
+                else:
+                    indata_ns = {}
+                    if service.get("instantiation-parameters"):
+                        indata_ns = deepcopy(service["instantiation-parameters"])
+                        # del service["instantiation-parameters"]
+                        
+                    indata_ns["nsdId"] = service["_id"]
+                    indata_ns["nsName"] = slice_request.get("nsiName") + "." + service["id"]
+                    indata_ns["vimAccountId"] = slice_request.get("vimAccountId")
+                    indata_ns["nsDescription"] = service["description"]
+                    if slice_request.get("ssh_keys"):
+                        indata_ns["ssh_keys"] = slice_request.get("ssh_keys")
+
+                    if ns_params:
+                        for ns_param in ns_params:
+                            if ns_param.get("id") == service["id"]:
+                                copy_ns_param = deepcopy(ns_param)
+                                del copy_ns_param["id"]
+                                indata_ns.update(copy_ns_param)
+                                break                   
+
+                    # Creates Nsr objects
+                    _id_nsr, _ = self.nsrTopic.new(rollback, session, indata_ns, kwargs, headers)
+                nsrs_item = {"nsrId": _id_nsr, "shared": service.get("is-shared-nss"), "nsd-id": service["nsd-ref"], 
+                             "nss-id": service["id"], "nslcmop_instantiate": None}
+                indata_ns["nss-id"] = service["id"]
                 nsrs_list.append(nsrs_item)
+                nsi_netslice_subnet.append(indata_ns)
+                nsr_ref = {"nsr-ref": _id_nsr}
+                nsi_descriptor["nsr-ref-list"].append(nsr_ref)
 
             # Adding the nsrs list to the nsi
             nsi_descriptor["_admin"]["nsrs-detailed-list"] = nsrs_list
+            nsi_descriptor["_admin"]["netslice-subnet"] = nsi_netslice_subnet
+            self.db.set_one("nsts", {"_id": slice_request["nstId"]}, {"_admin.usageState": "IN_USE"})
+
             # Creating the entry in the database
             self.db.create("nsis", nsi_descriptor)
             rollback.append({"topic": "nsis", "_id": nsi_id})
-            return nsi_id
-        except Exception as e:
+            return nsi_id, None
+        except Exception as e:   # TODO remove try Except, it is captured at nbi.py
             self.logger.exception("Exception {} at NsiTopic.new()".format(e), exc_info=True)
             raise EngineException("Error {}: {}".format(step, e))
         except ValidationError as e:
             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
 
-    def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
+    def edit(self, session, _id, indata=None, kwargs=None, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
 
@@ -758,14 +1163,15 @@ class NsiLcmOpTopic(BaseTopic):
         "instantiate": nsi_instantiate,
         "terminate": None
     }
-
+    
     def __init__(self, db, fs, msg):
         BaseTopic.__init__(self, db, fs, msg)
+        self.nsi_NsLcmOpTopic = NsLcmOpTopic(self.db, self.fs, self.msg)
 
     def _check_nsi_operation(self, session, nsir, operation, indata):
         """
         Check that user has enter right parameters for the operation
-        :param session:
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param operation: it can be: instantiate, terminate, action, TODO: update, heal
         :param indata: descriptor with the parameters of the operation
         :return: None
@@ -773,21 +1179,21 @@ class NsiLcmOpTopic(BaseTopic):
         nsds = {}
         nstd = nsir["network-slice-template"]
 
-        def check_valid_netslice_subnet_id(nsId):
+        def check_valid_netslice_subnet_id(nstId):
             # TODO change to vnfR (??)
-            for ns in nstd["netslice-subnet"]:
-                if nsId == ns["id"]:
-                    nsd_id = ns["nsd-ref"]
+            for netslice_subnet in nstd["netslice-subnet"]:
+                if nstId == netslice_subnet["id"]:
+                    nsd_id = netslice_subnet["nsd-ref"]
                     if nsd_id not in nsds:
                         nsds[nsd_id] = self.db.get_one("nsds", {"id": nsd_id})
                     return nsds[nsd_id]
             else:
-                raise EngineException("Invalid parameter nsId='{}' is not one of the "
-                                      "nst:netslice-subnet".format(nsId))
+                raise EngineException("Invalid parameter nstId='{}' is not one of the "
+                                      "nst:netslice-subnet".format(nstId))
         if operation == "instantiate":
             # check the existance of netslice-subnet items
-            for in_nst in get_iterable(indata.get("netslice-subnet")):           
-                nstd = check_valid_netslice_subnet_id(in_nst["nsdId"])
+            for in_nst in get_iterable(indata.get("netslice-subnet")):   
+                check_valid_netslice_subnet_id(in_nst["id"])
 
     def _create_nsilcmop(self, session, netsliceInstanceId, operation, params):
         now = time()
@@ -805,85 +1211,134 @@ class NsiLcmOpTopic(BaseTopic):
             "isCancelPending": False,
             "links": {
                 "self": "/osm/nsilcm/v1/nsi_lcm_op_occs/" + _id,
-                "nsInstance": "/osm/nsilcm/v1/netslice_instances/" + netsliceInstanceId,
+                "netsliceInstanceId": "/osm/nsilcm/v1/netslice_instances/" + netsliceInstanceId,
             }
         }
         return nsilcmop
 
-    def new(self, rollback, session, indata=None, kwargs=None, headers=None, force=False, make_public=False):
+    def add_shared_nsr_2vld(self, nsir, nsr_item):
+        for nst_sb_item in nsir["network-slice-template"].get("netslice-subnet"):
+            if nst_sb_item.get("is-shared-nss"):
+                for admin_subnet_item in nsir["_admin"].get("netslice-subnet"):
+                    if admin_subnet_item["nss-id"] == nst_sb_item["id"]:
+                        for admin_vld_item in nsir["_admin"].get("netslice-vld"):
+                            for admin_vld_nss_cp_ref_item in admin_vld_item["nss-connection-point-ref"]:
+                                if admin_subnet_item["nss-id"] == admin_vld_nss_cp_ref_item["nss-ref"]:
+                                    if not nsr_item["nsrId"] in admin_vld_item["shared-nsrs-list"]:
+                                        admin_vld_item["shared-nsrs-list"].append(nsr_item["nsrId"])
+                                    break
+        # self.db.set_one("nsis", {"_id": nsir["_id"]}, nsir)
+        self.db.set_one("nsis", {"_id": nsir["_id"]}, {"_admin.netslice-vld": nsir["_admin"].get("netslice-vld")})
+
+    def new(self, rollback, session, indata=None, kwargs=None, headers=None):
         """
         Performs a new operation over a ns
         :param rollback: list to append created items at database in case a rollback must to be done
-        :param session: contains the used login username and working project
+        :param session: contains "username", "admin", "force", "public", "project_id", "set_project"
         :param indata: descriptor with the parameters of the operation. It must contains among others
-            nsiInstanceId: _id of the nsir to perform the operation
+            netsliceInstanceId: _id of the nsir to perform the operation
             operation: it can be: instantiate, terminate, action, TODO: update, heal
         :param kwargs: used to override the indata descriptor
         :param headers: http request headers
-        :param force: If True avoid some dependence checks
-        :param make_public: Make the created item public to all projects
         :return: id of the nslcmops
         """
         try:
             # Override descriptor with query string kwargs
             self._update_input_with_kwargs(indata, kwargs)
             operation = indata["lcmOperationType"]
-            nsiInstanceId = indata["nsiInstanceId"]
+            netsliceInstanceId = indata["netsliceInstanceId"]
             validate_input(indata, self.operation_schema[operation])
 
-            # get nsi from nsiInstanceId
-            _filter = BaseTopic._get_project_filter(session, write=True, show_all=False)
-            _filter["_id"] = nsiInstanceId
+            # get nsi from netsliceInstanceId
+            _filter = self._get_project_filter(session)
+            _filter["_id"] = netsliceInstanceId
             nsir = self.db.get_one("nsis", _filter)
+            del _filter["_id"]
 
             # initial checking
             if not nsir["_admin"].get("nsiState") or nsir["_admin"]["nsiState"] == "NOT_INSTANTIATED":
                 if operation == "terminate" and indata.get("autoremove"):
                     # NSIR must be deleted
-                    return self.delete(session, nsiInstanceId)
+                    return None    # a none in this case is used to indicate not instantiated. It can be removed
                 if operation != "instantiate":
                     raise EngineException("netslice_instance '{}' cannot be '{}' because it is not instantiated".format(
-                        nsiInstanceId, operation), HTTPStatus.CONFLICT)
+                        netsliceInstanceId, operation), HTTPStatus.CONFLICT)
             else:
-                if operation == "instantiate" and not indata.get("force"):
+                if operation == "instantiate" and not session["force"]:
                     raise EngineException("netslice_instance '{}' cannot be '{}' because it is already instantiated".
-                                          format(nsiInstanceId, operation), HTTPStatus.CONFLICT)
+                                          format(netsliceInstanceId, operation), HTTPStatus.CONFLICT)
             
             # Creating all the NS_operation (nslcmop)
             # Get service list from db
             nsrs_list = nsir["_admin"]["nsrs-detailed-list"]
             nslcmops = []
-            for nsr_item in nsrs_list:
-                service = self.db.get_one("nsrs", {"_id": nsr_item["nsrId"]})
-                indata_ns = {}
-                indata_ns = service["instantiate_params"]
-                indata_ns["lcmOperationType"] = operation
-                indata_ns["nsInstanceId"] = service["_id"]
-                # Including netslice_id in the ns instantiate Operation
-                indata_ns["netsliceInstanceId"] = nsiInstanceId
-                del indata_ns["key-pair-ref"]
-                nsi_NsLcmOpTopic = NsLcmOpTopic(self.db, self.fs, self.msg)
-                # Creating NS_LCM_OP with the flag slice_object=True to not trigger the service instantiation 
-                # message via kafka bus
-                nslcmop = nsi_NsLcmOpTopic.new(rollback, session, indata_ns, kwargs, headers, force, slice_object=True)
-                nslcmops.append(nslcmop)
+            # nslcmops_item = None
+            for index, nsr_item in enumerate(nsrs_list):
+                nsi = None
+                if nsr_item.get("shared"):
+                    _filter["_admin.nsrs-detailed-list.ANYINDEX.shared"] = True
+                    _filter["_admin.nsrs-detailed-list.ANYINDEX.nsrId"] = nsr_item["nsrId"]
+                    _filter["_admin.nsrs-detailed-list.ANYINDEX.nslcmop_instantiate.ne"] = None
+                    _filter["_id.ne"] = netsliceInstanceId
+                    nsi = self.db.get_one("nsis", _filter, fail_on_empty=False, fail_on_more=False)
+                    if operation == "terminate":
+                        _update = {"_admin.nsrs-detailed-list.{}.nslcmop_instantiate".format(index): None}
+                        self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
+                        
+                    # looks the first nsi fulfilling the conditions but not being the current NSIR
+                    if nsi:
+                        nsi_admin_shared = nsi["_admin"]["nsrs-detailed-list"]
+                        for nsi_nsr_item in nsi_admin_shared:
+                            if nsi_nsr_item["nsd-id"] == nsr_item["nsd-id"] and nsi_nsr_item["shared"]:
+                                self.add_shared_nsr_2vld(nsir, nsr_item)
+                                nslcmops.append(nsi_nsr_item["nslcmop_instantiate"])
+                                _update = {"_admin.nsrs-detailed-list.{}".format(index): nsi_nsr_item}
+                                self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
+                                break
+                        # continue to not create nslcmop since nsrs is shared and nsrs was created
+                        continue
+                    else:
+                        self.add_shared_nsr_2vld(nsir, nsr_item)
+
+                try:
+                    service = self.db.get_one("nsrs", {"_id": nsr_item["nsrId"]})
+                    indata_ns = {}
+                    indata_ns = service["instantiate_params"]
+                    indata_ns["lcmOperationType"] = operation
+                    indata_ns["nsInstanceId"] = service["_id"]
+                    # Including netslice_id in the ns instantiate Operation
+                    indata_ns["netsliceInstanceId"] = netsliceInstanceId
+                    # Creating NS_LCM_OP with the flag slice_object=True to not trigger the service instantiation
+                    # message via kafka bus
+                    nslcmop, _ = self.nsi_NsLcmOpTopic.new(rollback, session, indata_ns, kwargs, headers,
+                                                           slice_object=True)
+                    nslcmops.append(nslcmop)
+                    if operation == "terminate":
+                        nslcmop = None
+                    _update = {"_admin.nsrs-detailed-list.{}.nslcmop_instantiate".format(index): nslcmop}
+                    self.db.set_one("nsis", {"_id": nsir["_id"]}, _update)
+                except (DbException, EngineException) as e:
+                    if e.http_code == HTTPStatus.NOT_FOUND:
+                        self.logger.info("HTTPStatus.NOT_FOUND")
+                        pass
+                    else:
+                        raise
 
             # Creates nsilcmop
             indata["nslcmops_ids"] = nslcmops
             self._check_nsi_operation(session, nsir, operation, indata)
-            nsilcmop_desc = self._create_nsilcmop(session, nsiInstanceId, operation, indata)
-            self.format_on_new(nsilcmop_desc, session["project_id"], make_public=make_public)
+
+            nsilcmop_desc = self._create_nsilcmop(session, netsliceInstanceId, operation, indata)
+            self.format_on_new(nsilcmop_desc, session["project_id"], make_public=session["public"])
             _id = self.db.create("nsilcmops", nsilcmop_desc)
             rollback.append({"topic": "nsilcmops", "_id": _id})
             self.msg.write("nsi", operation, nsilcmop_desc)
-            return _id
+            return _id, None
         except ValidationError as e:
             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
-        # except DbException as e:
-        #     raise EngineException("Cannot get nsi_instance '{}': {}".format(e), HTTPStatus.NOT_FOUND)
 
-    def delete(self, session, _id, force=False, dry_run=False):
+    def delete(self, session, _id, dry_run=False):
         raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
-    def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
+    def edit(self, session, _id, indata=None, kwargs=None, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)