diff options
Diffstat (limited to 'apps/slice_selection/optimizers/conductor/remote_opt_processor.py')
| -rw-r--r-- | apps/slice_selection/optimizers/conductor/remote_opt_processor.py | 104 |
1 files changed, 104 insertions, 0 deletions
diff --git a/apps/slice_selection/optimizers/conductor/remote_opt_processor.py b/apps/slice_selection/optimizers/conductor/remote_opt_processor.py new file mode 100644 index 0000000..a44fc4e --- /dev/null +++ b/apps/slice_selection/optimizers/conductor/remote_opt_processor.py @@ -0,0 +1,104 @@ +# ------------------------------------------------------------------------- +# Copyright (C) 2020 Wipro Limited. +# +# 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. +# +# ------------------------------------------------------------------------- +# + +""" +Module for processing slice selection request +""" + +import json +import traceback +from requests import RequestException + +from apps.slice_selection.optimizers.conductor.response_processor \ + import conductor_response_processor, conductor_error_response_processor +from osdf.adapters.conductor import conductor +from osdf.adapters.policy.interface import get_policies +from osdf.adapters.policy.utils import group_policies_gen +from osdf.logging.osdf_logging import error_log, debug_log +from osdf.utils.mdc_utils import mdc_from_json + + +def process_nsi_selection_opt(request_json, osdf_config): + """Process the nsi selection request from API layer + :param request_json: api request + :param policies: flattened policies corresponding to this request + :param osdf_config: configuration specific to OSDF app + :return: response as a dictionary + """ + req_info = request_json['requestInfo'] + try: + mdc_from_json(request_json) + + overall_recommendations = dict() + nst_info_map = dict() + for nst_info in request_json["NSTInfoList"]: + nst_name = nst_info["modelName"] + nst_info_map["nst_name"] = {"NSTName": nst_name, + "UUID": nst_info["modelVersionId"], + "invariantUUID": nst_info["modelInvariantId"]} + + policy_request_json = request_json.copy() + policy_request_json['serviceInfo']['serviceName'] = nst_name + + policies = get_policies(policy_request_json, "slice_selection") + + demands = get_slice_demands(nst_name, policies, osdf_config.core) + + request_parameters = {} + service_info = {} + req_info['numSolutions'] = 'all' + resp = conductor.request(req_info, demands, request_parameters, service_info, False, + osdf_config, policies) + debug_log.debug("Response from conductor {}".format(str(resp))) + overall_recommendations[nst_name] = resp["plans"][0].get("recommendations") + + return conductor_response_processor(overall_recommendations, nst_info_map, req_info) + + except Exception as ex: + error_log.error("Error for {} {}".format(req_info.get('requestId'), + traceback.format_exc())) + if isinstance(ex, RequestException): + try: + error_message = json.loads(ex.response)['plans'][0]['message'] + except Exception: + error_message = "Problem connecting to conductor" + else: + error_message = str(ex) + return conductor_error_response_processor(req_info, error_message) + + +def get_slice_demands(model_name, policies, config): + """ + :param model_name: model name of the slice + :param policies: flattened polcies corresponding to the request + :param config: configuration specific to OSDF app + :return: list of demands for the request + """ + group_policies = group_policies_gen(policies, config) + subscriber_policy_list = group_policies["onap.policies.optimization.SubscriberPolicy"] + slice_demands = list() + for subscriber_policy in subscriber_policy_list: + policy_properties = subscriber_policy[list(subscriber_policy.keys())[0]]['properties'] + if model_name in policy_properties["services"]: + subnet_attributes = policy_properties["properties"]["subscriberRole"][0] + for subnet in policy_properties["properties"]["subscriberName"]: + slice_demand = dict() + slice_demand["resourceModuleName"] = subnet + slice_demand['resourceModelInfo'] = subnet_attributes[subnet] + slice_demands.append(slice_demand) + return slice_demands |