Merge "Unique field moved to vnf policy"
[optf/osdf.git] / 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 from osdf.utils.mdc_utils import mdc_from_json
30
31 """
32 This application generates PCI Optimization API calls using the information received from PCI-Handler-MS, SDN-C
33 and Policy.
34 """
35
36
37 def process_pci_optimation(request_json, osdf_config, flat_policies):
38     """
39     Process a PCI request from a Client (build config-db, policy and  API call, make the call, return result)
40     :param req_object: Request parameters from the client
41     :param osdf_config: Configuration specific to OSDF application (core + deployment)
42     :param flat_policies: policies related to pci (fetched based on request)
43     :return: response from PCI Opt
44     """
45     try:
46         mdc_from_json(request_json)
47         rc = get_rest_client(request_json, service="pcih")
48         req_id = request_json["requestInfo"]["requestId"]
49         cell_info_list, network_cell_info = config_request(request_json, osdf_config, flat_policies)
50         pci_response = get_solutions(cell_info_list, network_cell_info, request_json)
51
52         metrics_log.info(MH.inside_worker_thread(req_id))
53     except Exception as err:
54         error_log.error("Error for {} {}".format(req_id, traceback.format_exc()))
55
56         try:
57             body = build_json_error_body(err)
58             metrics_log.info(MH.sending_response(req_id, "ERROR"))
59             rc.request(json=body, noresponse=True)
60         except RequestException as err:
61             MDC.put('requestID',req_id)
62             error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
63         raise err
64
65
66     try:
67         metrics_log.info(MH.calling_back_with_body(req_id, rc.url, pci_response))
68         rc.request(json=pci_response, noresponse=True)
69     except RequestException:  # can't do much here but log it and move on
70         error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
71
72
73 def get_solutions(cell_info_list, network_cell_info, request_json):
74     status, pci_solutions, anr_solutions = build_solution_list(cell_info_list, network_cell_info, request_json)
75     return {
76         "transactionId": request_json['requestInfo']['transactionId'],
77         "requestId": request_json["requestInfo"]["requestId"],
78         "requestStatus": "completed",
79         "statusMessage": status,
80         "solutions": {
81             'networkId': request_json['cellInfo']['networkId'],
82             'pciSolutions': pci_solutions,
83             'anrSolutions': anr_solutions
84         }
85     }
86
87
88 def build_solution_list(cell_info_list, network_cell_info, request_json):
89     status = "success"
90     req_id = request_json["requestInfo"]["requestId"]
91     try:
92         opt_solution = optimize(network_cell_info, cell_info_list, request_json)
93         pci_solutions = build_pci_solution(network_cell_info, opt_solution['pci'])
94         anr_solutions = build_anr_solution(network_cell_info, opt_solution.get('removables', {}))
95     except RuntimeError:
96         error_log.error("Failed finding solution for {} {}".format(req_id, traceback.format_exc()))
97         status = "failed"
98     return status, pci_solutions, anr_solutions
99
100
101 def build_pci_solution(network_cell_info, pci_solution):
102     pci_solutions = []
103     for k, v in pci_solution.items():
104         old_pci = get_pci_value(network_cell_info, k)
105         if old_pci != v:
106             response = {
107                 'cellId': get_cell_id(network_cell_info, k),
108                 'pci': v
109             }
110             pci_solutions.append(response)
111     return pci_solutions
112
113
114 def build_anr_solution(network_cell_info, removables):
115     anr_solutions = []
116     for k, v in removables.items():
117         response = {
118             'cellId': get_cell_id(network_cell_info, k),
119             'removeableNeighbors': list(map(lambda x: get_cell_id(network_cell_info, x), v))
120         }
121         anr_solutions.append(response)
122     return anr_solutions