osdf rearchitecture into apps and libs
[optf/osdf.git] / apps / pci / optimizers / pci_opt_processor.py
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2 #   Copyright (c) 2018 AT&T Intellectual Property
3 #
4 #   Licensed under the Apache License, Version 2.0 (the "License");
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6 #   You may obtain a copy of the License at
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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 onaplogging.mdcContext import MDC
22 from requests import RequestException
23
24 from osdf.logging.osdf_logging import metrics_log, MH, error_log
25 from osdf.operation.error_handling import build_json_error_body
26 from osdf.utils.interfaces import get_rest_client
27 from .configdb import request as config_request
28 from .solver.optimizer import pci_optimize as optimize
29 from .solver.pci_utils import get_cell_id, get_pci_value
30 from osdf.utils.mdc_utils import mdc_from_json
31
32 """
33 This application generates PCI Optimization API calls using the information received from PCI-Handler-MS, SDN-C
34 and Policy.
35 """
36
37
38 def process_pci_optimation(request_json, osdf_config, flat_policies):
39     """
40     Process a PCI request from a Client (build config-db, policy and  API call, make the call, return result)
41     :param req_object: Request parameters from the client
42     :param osdf_config: Configuration specific to OSDF application (core + deployment)
43     :param flat_policies: policies related to pci (fetched based on request)
44     :return: response from PCI Opt
45     """
46     try:
47         mdc_from_json(request_json)
48         rc = get_rest_client(request_json, service="pcih")
49         req_id = request_json["requestInfo"]["requestId"]
50         cell_info_list, network_cell_info = config_request(request_json, osdf_config, flat_policies)
51         pci_response = get_solutions(cell_info_list, network_cell_info, request_json)
52
53         metrics_log.info(MH.inside_worker_thread(req_id))
54     except Exception as err:
55         error_log.error("Error for {} {}".format(req_id, traceback.format_exc()))
56
57         try:
58             body = build_json_error_body(err)
59             metrics_log.info(MH.sending_response(req_id, "ERROR"))
60             rc.request(json=body, noresponse=True)
61         except RequestException as err:
62             MDC.put('requestID',req_id)
63             error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
64         raise err
65
66
67     try:
68         metrics_log.info(MH.calling_back_with_body(req_id, rc.url, pci_response))
69         rc.request(json=pci_response, noresponse=True)
70     except RequestException:  # can't do much here but log it and move on
71         error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
72
73
74 def get_solutions(cell_info_list, network_cell_info, request_json):
75     status, pci_solutions, anr_solutions = build_solution_list(cell_info_list, network_cell_info, request_json)
76     return {
77         "transactionId": request_json['requestInfo']['transactionId'],
78         "requestId": request_json["requestInfo"]["requestId"],
79         "requestStatus": "completed",
80         "statusMessage": status,
81         "solutions": {
82             'networkId': request_json['cellInfo']['networkId'],
83             'pciSolutions': pci_solutions,
84             'anrSolutions': anr_solutions
85         }
86     }
87
88
89 def build_solution_list(cell_info_list, network_cell_info, request_json):
90     status = "success"
91     req_id = request_json["requestInfo"]["requestId"]
92     try:
93         opt_solution = optimize(network_cell_info, cell_info_list, request_json)
94         pci_solutions = build_pci_solution(network_cell_info, opt_solution['pci'])
95         anr_solutions = build_anr_solution(network_cell_info, opt_solution.get('removables', {}))
96     except RuntimeError:
97         error_log.error("Failed finding solution for {} {}".format(req_id, traceback.format_exc()))
98         status = "failed"
99     return status, pci_solutions, anr_solutions
100
101
102 def build_pci_solution(network_cell_info, pci_solution):
103     pci_solutions = []
104     for k, v in pci_solution.items():
105         old_pci = get_pci_value(network_cell_info, k)
106         if old_pci != v:
107             response = {
108                 'cellId': get_cell_id(network_cell_info, k),
109                 'pci': v
110             }
111             pci_solutions.append(response)
112     return pci_solutions
113
114
115 def build_anr_solution(network_cell_info, removables):
116     anr_solutions = []
117     for k, v in removables.items():
118         response = {
119             'cellId': get_cell_id(network_cell_info, k),
120             'removeableNeighbors': list(map(lambda x: get_cell_id(network_cell_info, x), v))
121         }
122         anr_solutions.append(response)
123     return anr_solutions