adding more system tests.
[osm/NBI.git] / osm_nbi / instance_topics.py
index 29a391c..c3471ea 100644 (file)
@@ -1,11 +1,24 @@
 # -*- coding: utf-8 -*-
 
 # -*- 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
 # 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
+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 base_topic import BaseTopic, EngineException, get_iterable
 from descriptor_topics import DescriptorTopic
 
@@ -66,7 +79,7 @@ class NsrTopic(BaseTopic):
         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},
         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.usageSate": "NOT_IN_USE", "_admin.usage": None})
+                         {"_admin.usageState": "NOT_IN_USE", "_admin.usage": None})
         self._send_msg("deleted", {"_id": _id})
         return v
 
         self._send_msg("deleted", {"_id": _id})
         return v
 
@@ -126,13 +139,19 @@ class NsrTopic(BaseTopic):
                 "id": nsr_id,
                 "_id": nsr_id,
                 # "input-parameter": xpath, value,
                 "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("key-pair-ref"),  # TODO remove
             }
             ns_request["nsr_id"] = nsr_id
             }
             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") if key in nsd_vld})
 
             # Create VNFR
             needed_vnfds = {}
 
             # 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"])
                 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"])
@@ -160,6 +179,15 @@ class NsrTopic(BaseTopic):
                     "connection-point": [],
                     "ip-address": None,  # mgmt-interface filled by LCM
                 }
                     "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") 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"],
                 for cp in vnfd.get("connection-point", ()):
                     vnf_cp = {
                         "name": cp["name"],
@@ -169,7 +197,7 @@ class NsrTopic(BaseTopic):
                         # vim-id  # TODO it would be nice having a vim port id
                     }
                     vnfr_descriptor["connection-point"].append(vnf_cp)
                         # 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
                     vdur = {
                         "vdu-id-ref": vdu["id"],
                         # TODO      "name": ""     Name of the VDU in the VIM
@@ -196,8 +224,32 @@ class NsrTopic(BaseTopic):
                             # "ip-address", "mac-address" # filled by LCM
                             # vim-id  # TODO it would be nice having a vim port id
                         }
                             # "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"):
                         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)
 
                         vdur["interfaces"].append(vdu_iface)
                     count = vdu.get("count", 1)
@@ -266,17 +318,6 @@ class NsLcmOpTopic(BaseTopic):
     def __init__(self, db, fs, msg):
         BaseTopic.__init__(self, db, fs, msg)
 
     def __init__(self, db, fs, msg):
         BaseTopic.__init__(self, db, fs, msg)
 
-    def _validate_input_new(self, input, force=False):
-        """
-        Validates input user content for a new entry. It uses jsonschema for each type or operation.
-        :param input: user input content for the new topic
-        :param force: may be used for being more tolerant
-        :return: The same input content, or a changed version of it.
-        """
-        if self.schema_new:
-            validate_input(input, self.schema_new)
-        return input
-
     def _check_ns_operation(self, session, nsr, operation, indata):
         """
         Check that user has enter right parameters for the operation
     def _check_ns_operation(self, session, nsr, operation, indata):
         """
         Check that user has enter right parameters for the operation
@@ -413,26 +454,38 @@ class NsLcmOpTopic(BaseTopic):
                     raise EngineException("Invalid parameter vld:name='{}' is not present at nsd:vld".format(
                         in_vld["name"]))
 
                     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: client session information
+        :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)
         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["vim_accounts"] = vim_account
             pdu_filter["type"] = pdu_type
             pdu_filter["_admin.operationalState"] = "ENABLED"
             pdu_filter["type"] = pdu_type
             pdu_filter["_admin.operationalState"] = "ENABLED"
-            pdu_filter["_admin.usageSate"] = "NOT_IN_USE",
+            pdu_filter["_admin.usageState"] = "NOT_IN_USE"
             # TODO feature 1417: "shared": True,
 
             available_pdus = self.db.get_list("pdus", pdu_filter)
             # TODO feature 1417: "shared": True,
 
             available_pdus = self.db.get_list("pdus", pdu_filter)
@@ -451,8 +504,8 @@ class NsLcmOpTopic(BaseTopic):
                     break
             else:
                 raise EngineException(
                     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 = {
 
             # step 2. Update pdu
             rollback_pdu = {
@@ -462,7 +515,7 @@ class NsLcmOpTopic(BaseTopic):
                 "_admin.usage.vdur": None,
             }
             self.db.set_one("pdus", {"_id": pdu["_id"]},
                 "_admin.usage.vdur": None,
             }
             self.db.set_one("pdus", {"_id": pdu["_id"]},
-                            {"_admin.usageSate": "IN_USE",
+                            {"_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"],
                              "_admin.usage.nsr_id": vnfr["nsr-id-ref"],
                              "_admin.usage.vdur": vdur["vdu-id-ref"]}
@@ -471,21 +524,33 @@ class NsLcmOpTopic(BaseTopic):
 
             # step 3. Fill vnfr info by filling vdur
             vdu_text = "vdur.{}".format(vdur_index)
 
             # 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[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({
+                                # "vim-network-id": pdu_interface.get("vim-network-id"),
+                                "vim-network-name": pdu_interface.get("vim-network-name"),
+                                "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")})
                         break
 
                         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
 
     def _update_vnfrs(self, session, rollback, nsr, indata):
         vnfrs = None
@@ -511,10 +576,42 @@ class NsLcmOpTopic(BaseTopic):
             vnfr_update_rollback["vim-account-id"] = vnfr.get("vim-account-id")
 
             # get pdu
             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 = {
         now = time()
         _id = str(uuid4())
         nslcmop = {
@@ -522,7 +619,7 @@ class NsLcmOpTopic(BaseTopic):
             "_id": _id,
             "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
             "statusEnteredTime": now,
             "_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,
             "lcmOperationType": operation,
             "startTime": now,
             "isAutomaticInvocation": False,
@@ -530,12 +627,13 @@ class NsLcmOpTopic(BaseTopic):
             "isCancelPending": False,
             "links": {
                 "self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id,
             "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
 
             }
         }
         return nslcmop
 
-    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, force=False, make_public=False,
+            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
         """
         Performs a new operation over a ns
         :param rollback: list to append created items at database in case a rollback must to be done
@@ -574,13 +672,16 @@ class NsLcmOpTopic(BaseTopic):
                     raise EngineException("ns_instance '{}' cannot be '{}' because it is already instantiated".format(
                         nsInstanceId, operation), HTTPStatus.CONFLICT)
             self._check_ns_operation(session, nsr, operation, indata)
                     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)
             if operation == "instantiate":
                 self._update_vnfrs(session, rollback, nsr, indata)
-            nslcmop_desc = self._create_nslcmop(session, nsInstanceId, operation, indata)
+
+            nslcmop_desc = self._create_nslcmop(nsInstanceId, operation, indata)
             self.format_on_new(nslcmop_desc, session["project_id"], make_public=make_public)
             _id = self.db.create("nslcmops", nslcmop_desc)
             rollback.append({"topic": "nslcmops", "_id": _id})
             self.format_on_new(nslcmop_desc, session["project_id"], make_public=make_public)
             _id = self.db.create("nslcmops", nslcmop_desc)
             rollback.append({"topic": "nslcmops", "_id": _id})
-            self.msg.write("ns", operation, nslcmop_desc)
+            if not slice_object:
+                self.msg.write("ns", operation, nslcmop_desc)
             return _id
         except ValidationError as e:
             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
             return _id
         except ValidationError as e:
             raise EngineException(e, HTTPStatus.UNPROCESSABLE_ENTITY)
@@ -592,3 +693,314 @@ class NsLcmOpTopic(BaseTopic):
 
     def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
 
     def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
         raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
+
+
+class NsiTopic(BaseTopic):
+    topic = "nsis"
+    topic_msg = "nsi"
+
+    def __init__(self, db, fs, msg):
+        BaseTopic.__init__(self, db, fs, msg)
+
+    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 descriptor: descriptor to be inserted or edit
+        :return: None or raises exception
+        """
+        if not descriptor.get("nst-ref"):
+            return
+        nstd_id = descriptor["nst-ref"]
+        if not self.get_item_list(session, "nsts", {"id": nstd_id}):
+            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:
+            return
+        nsi = self.db.get_one("nsis", {"_id": _id})
+        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):
+        """
+        Delete item by its internal _id
+        :param session: contains the used login username, working project, and admin rights
+        :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, ...
+        """
+        # 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):
+        """
+        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 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:
+            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)
+
+            step = ""
+            # look for nstd
+            self.logger.info(str(slice_request))
+            step = "getting nstd id='{}' from database".format(slice_request.get("nstId"))
+            _filter = {"_id": slice_request["nstId"]}
+            _filter.update(BaseTopic._get_project_filter(session, write=False, show_all=True))
+            nstd = self.db.get_one("nsts", _filter)
+            nstd.pop("_admin", None)
+            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
+            nsi_descriptor = {
+                "id": nsi_id,
+                "nst-ref": nstd["id"],
+                "instantiation-parameters": {
+                    "netslice-subnet": []
+                },
+                "network-slice-template": nstd,
+                "_id": nsi_id,
+            }
+
+            # Creating netslice-subnet_record. 
+            needed_nsds = {}
+            services = []
+            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)
+                    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)
+
+                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"          
+
+            ns_params = indata.get("ns")
+            
+            # creates Network Services records (NSRs)
+            step = "creating nsrs at database using NsrTopic.new()"
+            nsrs_list = []
+            for service in services:
+                indata_ns = {}
+                indata_ns["nsdId"] = service["_id"]
+                indata_ns["nsName"] = service["id"]
+                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)
+                # Overwriting ns_params filtering by nsName == netslice-subnet.id
+                if ns_params:
+                    for ns_param in ns_params:
+                        if ns_param["nsName"] == service["id"]:
+                            indata_ns.update(ns_param)
+                _id_nsr = NsrTopic.new(self, rollback, session, indata_ns, kwargs, headers, force)
+                nsrs_item = {"nsrId": _id_nsr}
+                nsrs_list.append(nsrs_item)
+
+            # Adding the nsrs list to the nsi
+            nsi_descriptor["_admin"]["nsrs-detailed-list"] = nsrs_list
+            # 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:
+            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):
+        raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
+
+
+class NsiLcmOpTopic(BaseTopic):
+    topic = "nsilcmops"
+    topic_msg = "nsi"
+    operation_schema = {  # mapping between operation and jsonschema to validate
+        "instantiate": nsi_instantiate,
+        "terminate": None
+    }
+
+    def __init__(self, db, fs, msg):
+        BaseTopic.__init__(self, db, fs, msg)
+
+    def _check_nsi_operation(self, session, nsir, operation, indata):
+        """
+        Check that user has enter right parameters for the operation
+        :param session:
+        :param operation: it can be: instantiate, terminate, action, TODO: update, heal
+        :param indata: descriptor with the parameters of the operation
+        :return: None
+        """
+        nsds = {}
+        nstd = nsir["network-slice-template"]
+
+        def check_valid_netslice_subnet_id(nsId):
+            # TODO change to vnfR (??)
+            for ns in nstd["netslice-subnet"]:
+                if nsId == ns["id"]:
+                    nsd_id = ns["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))
+        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"])
+
+    def _create_nsilcmop(self, session, netsliceInstanceId, operation, params):
+        now = time()
+        _id = str(uuid4())
+        nsilcmop = {
+            "id": _id,
+            "_id": _id,
+            "operationState": "PROCESSING",  # COMPLETED,PARTIALLY_COMPLETED,FAILED_TEMP,FAILED,ROLLING_BACK,ROLLED_BACK
+            "statusEnteredTime": now,
+            "netsliceInstanceId": netsliceInstanceId,
+            "lcmOperationType": operation,
+            "startTime": now,
+            "isAutomaticInvocation": False,
+            "operationParams": params,
+            "isCancelPending": False,
+            "links": {
+                "self": "/osm/nsilcm/v1/nsi_lcm_op_occs/" + _id,
+                "nsInstance": "/osm/nsilcm/v1/netslice_instances/" + netsliceInstanceId,
+            }
+        }
+        return nsilcmop
+
+    def new(self, rollback, session, indata=None, kwargs=None, headers=None, force=False, make_public=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 indata: descriptor with the parameters of the operation. It must contains among others
+            nsiInstanceId: _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"]
+            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
+            nsir = self.db.get_one("nsis", _filter)
+
+            # 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)
+                if operation != "instantiate":
+                    raise EngineException("netslice_instance '{}' cannot be '{}' because it is not instantiated".format(
+                        nsiInstanceId, operation), HTTPStatus.CONFLICT)
+            else:
+                if operation == "instantiate" and not indata.get("force"):
+                    raise EngineException("netslice_instance '{}' cannot be '{}' because it is already instantiated".
+                                          format(nsiInstanceId, 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)
+
+            # 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)
+            _id = self.db.create("nsilcmops", nsilcmop_desc)
+            rollback.append({"topic": "nsilcmops", "_id": _id})
+            self.msg.write("nsi", operation, nsilcmop_desc)
+            return _id
+        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):
+        raise EngineException("Method delete called directly", HTTPStatus.INTERNAL_SERVER_ERROR)
+
+    def edit(self, session, _id, indata=None, kwargs=None, force=False, content=None):
+        raise EngineException("Method edit called directly", HTTPStatus.INTERNAL_SERVER_ERROR)