osdf/optimizers/pciopt/pci_opt_processor.py

   1 # -------------------------------------------------------------------------
   2 #   Copyright (c) 2018 AT&T Intellectual Property
   3 #
   4 #   Licensed under the Apache License, Version 2.0 (the "License");
   5 #   you may not use this file except in compliance with the License.
   6 #   You may obtain a copy of the License at
   7 #
   8 #       http://www.apache.org/licenses/LICENSE-2.0
   9 #
  10 #   Unless required by applicable law or agreed to in writing, software
  11 #   distributed under the License is distributed on an "AS IS" BASIS,
  12 #   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 #   See the License for the specific language governing permissions and
  14 #   limitations under the License.
  15 #
  16 # -------------------------------------------------------------------------
  17 #
  18
  19 import traceback
  20
  21 from requests import RequestException
  22
  23 from osdf.logging.osdf_logging import metrics_log, MH, error_log
  24 from osdf.operation.error_handling import build_json_error_body
  25 from osdf.utils.interfaces import get_rest_client
  26 from .configdb import request as config_request
  27 from .solver.optimizer import pci_optimize as optimize
  28 from .solver.pci_utils import get_cell_id, get_pci_value
  29
  30 """
  31 This application generates PCI Optimization API calls using the information received from PCI-Handler-MS, SDN-C
  32 and Policy.
  33 """
  34
  35
  36 def process_pci_optimation(request_json, osdf_config, flat_policies):
  37     """
  38     Process a PCI request from a Client (build config-db, policy and  API call, make the call, return result)
  39     :param req_object: Request parameters from the client
  40     :param osdf_config: Configuration specific to OSDF application (core + deployment)
  41     :param flat_policies: policies related to pci (fetched based on request)
  42     :return: response from PCI Opt
  43     """
  44     try:
  45         rc = get_rest_client(request_json, service="pcih")
  46         req_id = request_json["requestInfo"]["requestId"]
  47         cell_info_list, network_cell_info = config_request(request_json, osdf_config, flat_policies)
  48         pci_response = get_solutions(cell_info_list, network_cell_info, request_json)
  49
  50         metrics_log.info(MH.inside_worker_thread(req_id))
  51     except Exception as err:
  52         error_log.error("Error for {} {}".format(req_id, traceback.format_exc()))
  53
  54         try:
  55             body = build_json_error_body(err)
  56             metrics_log.info(MH.sending_response(req_id, "ERROR"))
  57             rc.request(json=body, noresponse=True)
  58         except RequestException:
  59             error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
  60         return
  61
  62     try:
  63         metrics_log.info(MH.calling_back_with_body(req_id, rc.url, pci_response))
  64         rc.request(json=pci_response, noresponse=True)
  65     except RequestException:  # can't do much here but log it and move on
  66         error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
  67
  68
  69 def get_solutions(cell_info_list, network_cell_info, request_json):
  70     status, pci_solutions, anr_solutions = build_solution_list(cell_info_list, network_cell_info, request_json)
  71     return {
  72         "transactionId": request_json['requestInfo']['transactionId'],
  73         "requestId": request_json["requestInfo"]["requestId"],
  74         "requestStatus": "completed",
  75         "statusMessage": status,
  76         "solutions": [
  77             {
  78                 'networkId': request_json['cellInfo']['networkId'],
  79                 'pciSolutions': pci_solutions,
  80                 'anrSolutions': anr_solutions
  81             }
  82         ]
  83     }
  84
  85
  86 def build_solution_list(cell_info_list, network_cell_info, request_json):
  87     status = "success"
  88     req_id = request_json["requestInfo"]["requestId"]
  89     try:
  90         opt_solution = optimize(network_cell_info, cell_info_list, request_json)
  91         pci_solutions = build_pci_solution(network_cell_info, opt_solution['pci'])
  92         anr_solutions = build_anr_solution(network_cell_info, opt_solution.get('removables', {}))
  93     except RuntimeError:
  94         error_log.error("Failed finding solution for {} {}".format(req_id, traceback.format_exc()))
  95         status = "failed"
  96     return status, pci_solutions, anr_solutions
  97
  98
  99 def build_pci_solution(network_cell_info, pci_solution):
 100     pci_solutions = []
 101     for k, v in pci_solution.items():
 102         old_pci = get_pci_value(network_cell_info, k)
 103         if old_pci != v:
 104             response = {
 105                 'cellId': get_cell_id(network_cell_info, k),
 106                 'pci': v
 107             }
 108             pci_solutions.append(response)
 109     return pci_solutions
 110
 111
 112 def build_anr_solution(network_cell_info, removables):
 113     anr_solutions = []
 114     for k, v in removables.items():
 115         response = {
 116             'cellId': get_cell_id(network_cell_info, k),
 117             'removeableNeighbors': list(map(lambda x: get_cell_id(network_cell_info, x), v))
 118         }
 119         anr_solutions.append(response)
 120     return anr_solutions