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# Copyright 2021 K Sai Kiran (Tata Elxsi) |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
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# implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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__author__ = "K Sai Kiran <saikiran.k@tataelxsi.co.in>, Selvi Jayaraman <selvi.j@tataelxsi.co.in>" |
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__date__ = "$12-June-2021 8:30:59$" |
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from osm_nbi.instance_topics import NsrTopic, NsLcmOpTopic, VnfrTopic |
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from .base_methods import BaseMethod |
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class VnfLcmOp2NsLcmOp: |
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def __init__(self, db, fs, msg, auth): |
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""" |
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Constructor of Vnf lcm op to Ns lcm op |
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""" |
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self.new_vnf_lcmop = NewVnfLcmOp(db, fs, msg, auth) |
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self.list_vnf_lcmop = ListVnfLcmOp(db, fs, msg, auth) |
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self.show_vnf_lcmop = ShowVnfLcmOp(db, fs, msg, auth) |
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def new(self, rollback, session, indata=None, kwargs=None, headers=None): |
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""" |
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Creates a new entry into database. |
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:param rollback: list to append created items at database in case a rollback may to be done |
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:param session: contains "username", "admin", "force", "public", "project_id", "set_project" |
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:param indata: data to be inserted |
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:param kwargs: used to override the indata descriptor |
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:param headers: http request headers |
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:return: _id, op_id: |
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_id: identity of the inserted data. |
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op_id: operation id if this is asynchronous, None otherwise |
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""" |
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return self.new_vnf_lcmop.action(rollback, session, indata, kwargs, headers) |
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def list(self, session, filter_q=None, api_req=False): |
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""" |
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Get a list of the Vnf Lcm Operation that matches a filter |
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:param session: contains the used login username and working project |
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:param filter_q: filter of data to be applied |
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:param api_req: True if this call is serving an external API request. False if serving internal request. |
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:return: The list, it can be empty if no one match the filter. |
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""" |
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return self.list_vnf_lcmop.action(session, filter_q, api_req) |
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def show(self, session, _id, api_req=False): |
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""" |
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Get complete information on an Vnf Lcm Operation |
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:param session: contains "username", "admin", "force", "public", "project_id", "set_project" |
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:param _id: server internal id |
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:param api_req: True if this call is serving an external API request. False if serving internal request. |
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:return: dictionary, raise exception if not found. |
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""" |
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return self.show_vnf_lcmop.action(session, _id, api_req) |
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class NewVnfLcmOp(BaseMethod): |
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def __init__(self, db, fs, msg, auth): |
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""" |
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Constructor of new Vnf Lcm Op |
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""" |
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super().__init__() |
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self.msg = msg |
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self.nslcmoptopic = NsLcmOpTopic(db, fs, msg, auth) |
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self.nsrtopic = NsrTopic(db, fs, msg, auth) |
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self.vnfrtopic = VnfrTopic(db, fs, msg, auth) |
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def __get_nsdid(self, session, vnf_instance_id): |
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""" |
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Returns a nsd id from vnf instance id. |
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:param session: contains the used login username and working project |
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:param vnf_instance_id: id of vnf instance |
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:return: id of nsd id |
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""" |
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nsr = self.nsrtopic.show(session, vnf_instance_id) |
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return nsr['nsd']['_id'] |
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def __get_formatted_indata(self, session, indata): |
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""" |
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Returns formatted data for new vnf lcm op |
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:param session: contains the used login username and working project |
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:param indata: contains information for new lcm operation. |
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:return: formatted indata for new lcm op. |
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""" |
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formatted_indata = {} |
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if indata["lcmOperationType"] == "instantiate": |
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formatted_indata = { |
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"nsName": indata["vnfName"], |
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"nsDescription": indata["vnfDescription"], |
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"nsdId": self.__get_nsdid(session, indata["vnfInstanceId"]), |
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"vimAccountId": indata["vimAccountId"], |
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"nsr_id": indata["vnfInstanceId"], |
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"lcmOperationType": indata["lcmOperationType"], |
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"nsInstanceId": indata["vnfInstanceId"] |
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} |
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elif indata["lcmOperationType"] == "terminate": |
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formatted_indata = { |
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"lcmOperationType": indata["lcmOperationType"], |
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"nsInstanceId": indata["vnfInstanceId"] |
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} |
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elif indata["lcmOperationType"] == "scale": |
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formatted_indata = { |
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"lcmOperationType": indata["lcmOperationType"], |
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"nsInstanceId": indata["vnfInstanceId"], |
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"scaleType": "SCALE_VNF", |
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"scaleVnfData": { |
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"scaleVnfType": indata["type"], |
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"scaleByStepData": { |
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"scaling-group-descriptor": indata["aspectId"], |
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"member-vnf-index": indata["additionalParams"]["member-vnf-index"] |
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} |
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} |
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} |
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elif indata["lcmOperationType"] == "action": |
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formatted_indata = { |
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"lcmOperationType": indata["lcmOperationType"], |
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"nsInstanceId": indata["vnfInstanceId"], |
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"member_vnf_index": indata["member_vnf_index"], |
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"primitive": indata["primitive"], |
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"primitive_params": indata["primitive_params"] |
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} |
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return formatted_indata |
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def notify_operation(self, session, _id, lcm_operation, op_id): |
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""" |
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Formats the operation message params and sends to kafka |
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:param session: contains "username", "admin", "force", "public", "project_id", "set_project" |
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:param _id: vnf instance id |
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:param lcm_operation: lcm operation type of a VNF (instantiate, scale, terminate) |
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:param op_id: lcm operation id of a VNF |
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:return: None |
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""" |
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vnfInstanceId = _id |
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operation = lcm_operation |
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nslcmop_rec = self.nslcmoptopic.show(session, op_id) |
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operation_status = nslcmop_rec["operationState"] |
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vnfr = self.vnfrtopic.show(session, vnfInstanceId) |
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links = {"self": "/osm/vnflcm/v1/vnf_lcm_op_occs/" + op_id, |
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"vnfInstance": "/osm/vnflcm/v1/vnf_instances/" + vnfInstanceId} |
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params = {"vnfdId": vnfr["vnfd-ref"], |
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"vnfInstanceId": vnfInstanceId, |
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"operationState": operation_status, |
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"vnfLcmOpOccId": op_id, |
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"_links": links |
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} |
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self.msg.write("vnf", operation, params) |
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return None |
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def action(self, rollback, session, indata=None, kwargs=None, headers=None): |
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""" |
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Creates an new lcm operation. |
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:param rollback: list to append the created items at database in case a rollback must be done |
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:param session: contains "username", "admin", "force", "public", "project_id", "set_project" |
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:param indata: params to be used for the nsr |
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:param kwargs: used to override the indata |
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:param headers: http request headers |
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:return: id of new lcm operation. |
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""" |
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vnfInstanceId = indata["vnfInstanceId"] |
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lcm_operation = indata["lcmOperationType"] |
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vnfr = self.vnfrtopic.show(session, vnfInstanceId) |
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indata["vnfInstanceId"] = vnfr.get("nsr-id-ref") |
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indata = self.__get_formatted_indata(session, indata) |
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op_id, _ = self.nslcmoptopic.new(rollback, session, indata, kwargs, headers) |
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self.notify_operation(session, vnfInstanceId, lcm_operation, op_id) |
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return op_id, _ |
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class ListVnfLcmOp(BaseMethod): |
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def __init__(self, db, fs, msg, auth): |
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""" |
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Constructor call for listing vnf lcm operations |
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""" |
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super().__init__() |
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self.nslcmoptopic = NsLcmOpTopic(db, fs, msg, auth) |
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self.nsrtopic = NsrTopic(db, fs, msg, auth) |
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def action(self, session, filter_q=None, api_req=False): |
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""" |
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To get list of vnf lcm operations that matches a filter |
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:param session: contains the used login username and working project |
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:param filter_q: filter of data to be applied |
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:param api_req: True if this call is serving an external API request. False if serving internal request. |
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:return: The list, it can be empty if no one match the filter. |
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""" |
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list = [] |
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records = self.nslcmoptopic.list(session, filter_q, api_req) |
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for record in records: |
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ns_id = record.get("nsInstanceId") |
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nsr = self.nsrtopic.show(session, ns_id) |
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vnfInstance_id = nsr['constituent-vnfr-ref'][0] |
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outdata = sol003_projection(record, vnfInstance_id) |
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list.append(outdata) |
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return list |
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class ShowVnfLcmOp(BaseMethod): |
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def __init__(self, db, fs, msg, auth): |
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""" |
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Constructor call for showing vnf lcm operation |
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""" |
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super().__init__() |
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self.nslcmoptopic = NsLcmOpTopic(db, fs, msg, auth) |
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self.nsrtopic = NsrTopic(db, fs, msg, auth) |
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def action(self, session, _id, api_req=False): |
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""" |
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Get complete information on an Vnf Lcm Operation. |
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:param session: contains "username", "admin", "force", "public", "project_id", "set_project" |
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:param _id: Vnf Lcm operation id |
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:param api_req: True if this call is serving an external API request. False if serving internal request. |
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:return: dictionary, raise exception if not found. |
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""" |
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record = self.nslcmoptopic.show(session, _id, api_req) |
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ns_id = record.get("nsInstanceId") |
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nsr = self.nsrtopic.show(session, ns_id) |
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vnfinstance_id = nsr['constituent-vnfr-ref'][0] |
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outdata = sol003_projection(record, vnfinstance_id) |
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return outdata |
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def sol003_projection(data, vnfinstance_id): |
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""" |
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Returns SOL003 formatted data |
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:param data: contains Lcm Operation information |
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:param vnfinstance_id: id of vnf_instance |
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:return: SOL003 formatted data of vnf lcm op |
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""" |
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data.pop("nsInstanceId") |
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data.pop("operationParams") |
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data.pop("links") |
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links = { |
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"self": "/osm/vnflcm/v1/vnf_lcm_op_occs/" + data["_id"], |
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"vnfInstance": "/osm/vnflcm/v1/vnf_instances/" + vnfinstance_id, |
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} |
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data["_links"] = links |
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data["vnfInstanceId"] = vnfinstance_id |
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return data |
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