| osm_policy_module/common/lcm_client.py |
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# -*- coding: utf-8 -*- |
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# Copyright 2018 Whitestack, LLC |
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# ************************************************************* |
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# This file is part of OSM Monitoring module |
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# All Rights Reserved to Whitestack, LLC |
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# Licensed under the Apache License, Version 2.0 (the "License"); you may |
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# not use this file except in compliance with the License. You may obtain |
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# a copy of the License at |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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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, WITHOUT |
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
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# License for the specific language governing permissions and limitations |
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# under the License. |
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# For those usages not covered by the Apache License, Version 2.0 please |
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# contact: bdiaz@whitestack.com or glavado@whitestack.com |
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## |
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import datetime |
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import json |
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import logging |
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import time |
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import uuid |
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from osm_policy_module.common.common_db_client import CommonDbClient |
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from osm_policy_module.common.message_bus_client import MessageBusClient |
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from osm_policy_module.core.config import Config |
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log = logging.getLogger(__name__) |
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class LcmClient: |
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""" |
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Client to communicate with LCM through the message bus. |
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""" |
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def __init__(self, config: Config): |
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self.db_client = CommonDbClient(config) |
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self.msg_bus = MessageBusClient(config) |
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async def scale( |
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self, nsr_id: str, scaling_group_name: str, vnf_member_index: str, action: str |
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): |
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""" |
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Sends scaling action to LCM through the message bus. |
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:param nsr_id: Network service record id |
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:param scaling_group_name: Scaling group name |
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:param vnf_member_index: VNF member index |
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:param action: Scaling action to be executed. Valid values: scale_in, scale_out |
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:return: |
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""" |
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log.debug( |
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"scale %s %s %s %s", nsr_id, scaling_group_name, vnf_member_index, action |
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) |
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nsr = self.db_client.get_nsr(nsr_id) |
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nslcmop = self._generate_nslcmop( |
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nsr_id, scaling_group_name, vnf_member_index, action, nsr["_admin"] |
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) |
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self.db_client.create_nslcmop(nslcmop) |
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log.debug("Sending scale action message: %s", json.dumps(nslcmop)) |
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await self.msg_bus.aiowrite("ns", "scale", nslcmop) |
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def _generate_nslcmop( |
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self, |
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nsr_id: str, |
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scaling_group_name: str, |
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vnf_member_index: str, |
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action: str, |
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admin: dict, |
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): |
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""" |
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Builds scaling nslcmop. |
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:param nsr_id: Network service record id |
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:param scaling_group_name: Scaling group name |
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:param vnf_member_index: VNF member index |
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:param action: Scaling action to be executed. Valid values: scale_in, scale_out |
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:param admin: Dict corresponding to the _admin section of the nsr. Required keys: projects_read, projects_write. |
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:return: |
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""" |
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log.debug( |
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"_generate_nslcmop %s %s %s %s %s", |
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nsr_id, |
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scaling_group_name, |
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vnf_member_index, |
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action, |
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admin, |
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) |
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_id = str(uuid.uuid4()) |
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now = time.time() |
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params = { |
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"scaleType": "SCALE_VNF", |
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"scaleVnfData": { |
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"scaleVnfType": action.upper(), |
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"scaleByStepData": { |
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"scaling-group-descriptor": scaling_group_name, |
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"member-vnf-index": vnf_member_index, |
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}, |
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}, |
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"scaleTime": "{}Z".format(datetime.datetime.utcnow().isoformat()), |
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} |
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nslcmop = { |
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"id": _id, |
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"_id": _id, |
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"operationState": "PROCESSING", |
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"statusEnteredTime": now, |
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"nsInstanceId": nsr_id, |
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"lcmOperationType": "scale", |
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"startTime": now, |
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"isAutomaticInvocation": True, |
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"operationParams": params, |
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"isCancelPending": False, |
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"links": { |
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"self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id, |
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"nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id, |
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}, |
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"_admin": { |
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"projects_read": admin["projects_read"], |
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"projects_write": admin["projects_write"], |
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}, |
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} |
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return nslcmop |
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async def heal( |
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self, |
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nsr_id: str, |
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vnfinstance_id: str, |
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vdur_name: str, |
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vdu_id: str, |
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vnf_member_index: str, |
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heal_type: str, |
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day1: bool, |
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count_index: int, |
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): |
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""" |
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Sends healing action to LCM through the message bus. |
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param nsr_id: Network service record id |
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param vdu_id: Scaling vdu id |
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param vnf_member_index: VNF member index |
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param heal_type: healing action to be executed. Valid values: restart,respawn |
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param day1: To run day1 operations |
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param cause: cause of healing |
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return |
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""" |
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log.debug( |
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"heal %s %s %s %s %s %s %s %s", |
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nsr_id, |
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vnfinstance_id, |
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vdur_name, |
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vdu_id, |
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vnf_member_index, |
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heal_type, |
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day1, |
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count_index, |
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) |
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nsr = self.db_client.get_nsr(nsr_id) |
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nslcmop = self._generate_nslcmop_heal( |
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nsr_id, |
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vnfinstance_id, |
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vdur_name, |
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vdu_id, |
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vnf_member_index, |
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heal_type, |
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day1, |
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count_index, |
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nsr["_admin"], |
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) |
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self.db_client.create_nslcmop(nslcmop) |
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log.debug("Sending heal action message: %s", json.dumps(nslcmop)) |
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await self.msg_bus.aiowrite("ns", "heal", nslcmop) |
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def _generate_nslcmop_heal( |
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self, |
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nsr_id: str, |
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vnfinstance_id: str, |
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vdur_name: str, |
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vdu_id: str, |
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vnf_member_index: str, |
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heal_type: str, |
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day1: bool, |
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count_index: int, |
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admin: dict, |
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): |
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""" |
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Builds healing nslcmop. |
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param nsr_id: Network service record id |
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param vnf_member_index: VNF member index |
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param action: healing action to be executed. Valid values: restart, respawn |
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param admin: Dict corresponding to the _admin section of the nsr. Required keys: projects_read, projects_write. |
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return: |
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""" |
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log.debug( |
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"_generate_nslcmop_heal %s %s %s %s %s %s %s %s %s", |
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nsr_id, |
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vnfinstance_id, |
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vdur_name, |
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vdu_id, |
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vnf_member_index, |
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heal_type, |
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day1, |
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count_index, |
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admin, |
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) |
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_id = str(uuid.uuid4()) |
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now = time.time() |
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params = { |
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"lcmOperationType": "heal", |
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"nsInstanceId": nsr_id, |
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"healVnfData": [ |
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{ |
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"vnfInstanceId": vnfinstance_id, |
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"cause": "default", |
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"additionalParams": { |
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"run-day1": day1, |
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"vdu": [ |
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{ |
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"run-day1": day1, |
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"count-index": count_index, |
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"vdu-id": vdu_id, |
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} |
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], |
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}, |
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} |
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], |
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} |
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nslcmop = { |
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"id": _id, |
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"_id": _id, |
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"operationState": "PROCESSING", |
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"statusEnteredTime": now, |
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"nsInstanceId": nsr_id, |
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"member-vnf-index": vnf_member_index, |
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"lcmOperationType": "heal", |
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"startTime": now, |
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"location": "default", |
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"isAutomaticInvocation": True, |
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"operationParams": params, |
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"isCancelPending": False, |
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"links": { |
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"self": "/osm/nslcm/v1/ns_lcm_op_occs/" + _id, |
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"nsInstance": "/osm/nslcm/v1/ns_instances/" + nsr_id, |
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}, |
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"_admin": { |
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"projects_read": admin["projects_read"], |
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"projects_write": admin["projects_write"], |
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}, |
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} |
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return nslcmop |
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