osdf rearchitecture into apps and libs

Change-Id: I2db2f8e252bd5e60807b2ffabf5a5b193a789f7a
Signed-off-by: vrvarma <vv8305@att.com>
Issue-ID: OPTFRA-637

1 files changed, 123 insertions, 0 deletions

diff --git a/apps/pci/optimizers/pci_opt_processor.py b/apps/pci/optimizers/pci_opt_processor.py
new file mode 100644
index 0000000..9948d55
--- /dev/null
+++ b/apps/pci/optimizers/pci_opt_processor.py
@@ -0,0 +1,123 @@
+# -------------------------------------------------------------------------
+#   Copyright (c) 2018 AT&T Intellectual Property
+#
+#   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.
+#
+# -------------------------------------------------------------------------
+#
+
+import traceback
+
+from onaplogging.mdcContext import MDC
+from requests import RequestException
+
+from osdf.logging.osdf_logging import metrics_log, MH, error_log
+from osdf.operation.error_handling import build_json_error_body
+from osdf.utils.interfaces import get_rest_client
+from .configdb import request as config_request
+from .solver.optimizer import pci_optimize as optimize
+from .solver.pci_utils import get_cell_id, get_pci_value
+from osdf.utils.mdc_utils import mdc_from_json
+
+"""
+This application generates PCI Optimization API calls using the information received from PCI-Handler-MS, SDN-C
+and Policy.
+"""
+
+
+def process_pci_optimation(request_json, osdf_config, flat_policies):
+    """
+    Process a PCI request from a Client (build config-db, policy and  API call, make the call, return result)
+    :param req_object: Request parameters from the client
+    :param osdf_config: Configuration specific to OSDF application (core + deployment)
+    :param flat_policies: policies related to pci (fetched based on request)
+    :return: response from PCI Opt
+    """
+    try:
+        mdc_from_json(request_json)
+        rc = get_rest_client(request_json, service="pcih")
+        req_id = request_json["requestInfo"]["requestId"]
+        cell_info_list, network_cell_info = config_request(request_json, osdf_config, flat_policies)
+        pci_response = get_solutions(cell_info_list, network_cell_info, request_json)
+
+        metrics_log.info(MH.inside_worker_thread(req_id))
+    except Exception as err:
+        error_log.error("Error for {} {}".format(req_id, traceback.format_exc()))
+
+        try:
+            body = build_json_error_body(err)
+            metrics_log.info(MH.sending_response(req_id, "ERROR"))
+            rc.request(json=body, noresponse=True)
+        except RequestException as err:
+            MDC.put('requestID',req_id)
+            error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
+        raise err
+
+
+    try:
+        metrics_log.info(MH.calling_back_with_body(req_id, rc.url, pci_response))
+        rc.request(json=pci_response, noresponse=True)
+    except RequestException:  # can't do much here but log it and move on
+        error_log.error("Error sending asynchronous notification for {} {}".format(req_id, traceback.format_exc()))
+
+
+def get_solutions(cell_info_list, network_cell_info, request_json):
+    status, pci_solutions, anr_solutions = build_solution_list(cell_info_list, network_cell_info, request_json)
+    return {
+        "transactionId": request_json['requestInfo']['transactionId'],
+        "requestId": request_json["requestInfo"]["requestId"],
+        "requestStatus": "completed",
+        "statusMessage": status,
+        "solutions": {
+            'networkId': request_json['cellInfo']['networkId'],
+            'pciSolutions': pci_solutions,
+            'anrSolutions': anr_solutions
+        }
+    }
+
+
+def build_solution_list(cell_info_list, network_cell_info, request_json):
+    status = "success"
+    req_id = request_json["requestInfo"]["requestId"]
+    try:
+        opt_solution = optimize(network_cell_info, cell_info_list, request_json)
+        pci_solutions = build_pci_solution(network_cell_info, opt_solution['pci'])
+        anr_solutions = build_anr_solution(network_cell_info, opt_solution.get('removables', {}))
+    except RuntimeError:
+        error_log.error("Failed finding solution for {} {}".format(req_id, traceback.format_exc()))
+        status = "failed"
+    return status, pci_solutions, anr_solutions
+
+
+def build_pci_solution(network_cell_info, pci_solution):
+    pci_solutions = []
+    for k, v in pci_solution.items():
+        old_pci = get_pci_value(network_cell_info, k)
+        if old_pci != v:
+            response = {
+                'cellId': get_cell_id(network_cell_info, k),
+                'pci': v
+            }
+            pci_solutions.append(response)
+    return pci_solutions
+
+
+def build_anr_solution(network_cell_info, removables):
+    anr_solutions = []
+    for k, v in removables.items():
+        response = {
+            'cellId': get_cell_id(network_cell_info, k),
+            'removeableNeighbors': list(map(lambda x: get_cell_id(network_cell_info, x), v))
+        }
+        anr_solutions.append(response)
+    return anr_solutions