E2Manager/handlers/rmrmsghandlers/e2_term_init_notification_handler.go

   1 //
   2 // Copyright 2019 AT&T Intellectual Property
   3 // Copyright 2019 Nokia
   4 //
   5 // Licensed under the Apache License, Version 2.0 (the "License");
   6 // you may not use this file except in compliance with the License.
   7 // You may obtain a copy of the License at
   8 //
   9 //      http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing, software
  12 // distributed under the License is distributed on an "AS IS" BASIS,
  13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 // See the License for the specific language governing permissions and
  15 // limitations under the License.
  16 //
  17
  18 package rmrmsghandlers
  19
  20 import (
  21         "e2mgr/logger"
  22         "e2mgr/managers"
  23         "e2mgr/models"
  24         "e2mgr/services"
  25         "encoding/json"
  26         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
  27 )
  28
  29 type E2TermInitNotificationHandler struct {
  30         logger                 *logger.Logger
  31         rnibDataService        services.RNibDataService
  32         ranReconnectionManager *managers.RanReconnectionManager
  33         e2tInstancesManager    managers.IE2TInstancesManager
  34 }
  35
  36 func NewE2TermInitNotificationHandler(logger *logger.Logger, ranReconnectionManager *managers.RanReconnectionManager, rnibDataService services.RNibDataService, e2tInstancesManager managers.IE2TInstancesManager) E2TermInitNotificationHandler {
  37         return E2TermInitNotificationHandler{
  38                 logger:                 logger,
  39                 rnibDataService:        rnibDataService,
  40                 ranReconnectionManager: ranReconnectionManager,
  41                 e2tInstancesManager:    e2tInstancesManager,
  42         }
  43 }
  44
  45 func (h E2TermInitNotificationHandler) Handle(request *models.NotificationRequest) {
  46         unmarshalledPayload := models.E2TermInitPayload{}
  47         err :=  json.Unmarshal(request.Payload, &unmarshalledPayload)
  48
  49         if err != nil {
  50                 h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Error unmarshaling E2 Term Init payload: %s", err)
  51                 return
  52         }
  53
  54         e2tAddress := unmarshalledPayload.Address
  55
  56         if len(e2tAddress) == 0 {
  57                 h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Empty E2T address received")
  58                 return
  59         }
  60
  61         h.logger.Infof("#E2TermInitNotificationHandler.Handle - E2T address: %s - handling E2_TERM_INIT", e2tAddress)
  62
  63         e2tInstance, err := h.e2tInstancesManager.GetE2TInstance(e2tAddress)
  64
  65         if err != nil {
  66                 _, ok := err.(*common.ResourceNotFoundError)
  67
  68                 if !ok {
  69                         h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Failed retrieving E2TInstance. error: %s", err)
  70                         return
  71                 }
  72
  73                 _ = h.e2tInstancesManager.AddE2TInstance(e2tAddress)
  74                 return
  75         }
  76
  77         if len(e2tInstance.AssociatedRanList) == 0 {
  78                 h.logger.Infof("#E2TermInitNotificationHandler.Handle - E2T Address: %s - E2T instance has no associated RANs", e2tInstance.Address)
  79                 return
  80         }
  81
  82         for _, ranName := range e2tInstance.AssociatedRanList {
  83
  84                 if err := h.ranReconnectionManager.ReconnectRan(ranName); err != nil {
  85                         h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Ran name: %s - connection attempt failure, error: %s", ranName, err)
  86                         _, ok := err.(*common.ResourceNotFoundError)
  87                         if !ok {
  88                                 break
  89                         }
  90                 }
  91         }
  92
  93         h.logger.Infof("#E2TermInitNotificationHandler.Handle - Completed handling of E2_TERM_INIT")
  94 }