E2Manager/handlers/rmrmsghandlers/setup_response_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 package rmrmsghandlers
  18
  19 import (
  20         "e2mgr/enums"
  21         "e2mgr/logger"
  22         "e2mgr/managers"
  23         "e2mgr/models"
  24         "e2mgr/rmrCgo"
  25         "e2mgr/services"
  26         "e2mgr/utils"
  27         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
  28 )
  29
  30 type SetupResponseNotificationHandler struct {
  31         logger                 *logger.Logger
  32         rnibDataService        services.RNibDataService
  33         setupResponseManager   managers.ISetupResponseManager
  34         ranStatusChangeManager managers.IRanStatusChangeManager
  35         msgType                int
  36 }
  37
  38 var msgTypeToMsgName = map[int]string{
  39         rmrCgo.RIC_X2_SETUP_RESP:         "X2 Setup Response",
  40         rmrCgo.RIC_X2_SETUP_FAILURE:      "X2 Setup Failure Response",
  41         rmrCgo.RIC_ENDC_X2_SETUP_RESP:    "ENDC Setup Response",
  42         rmrCgo.RIC_ENDC_X2_SETUP_FAILURE: "ENDC Setup Failure Response",
  43 }
  44
  45 func NewSetupResponseNotificationHandler(logger *logger.Logger, rnibDataService services.RNibDataService, setupResponseManager managers.ISetupResponseManager, ranStatusChangeManager managers.IRanStatusChangeManager, msgType int) SetupResponseNotificationHandler {
  46         return SetupResponseNotificationHandler{
  47                 logger: logger,
  48                 rnibDataService:        rnibDataService,
  49                 setupResponseManager:   setupResponseManager,
  50                 ranStatusChangeManager: ranStatusChangeManager,
  51                 msgType:                msgType,
  52         }
  53 }
  54
  55 func (h SetupResponseNotificationHandler) Handle(request *models.NotificationRequest) {
  56         msgName := msgTypeToMsgName[h.msgType]
  57         h.logger.Infof("#SetupResponseNotificationHandler - RAN name: %s - Received %s notification", request.RanName, msgName)
  58
  59         inventoryName := request.RanName
  60
  61         nodebInfo, rnibErr := h.rnibDataService.GetNodeb(inventoryName)
  62
  63         if rnibErr != nil {
  64                 h.logger.Errorf("#SetupResponseNotificationHandler - RAN name: %s - Error fetching RAN from rNib: %v", request.RanName, rnibErr)
  65                 return
  66         }
  67
  68         if !isConnectionStatusValid(nodebInfo.ConnectionStatus) {
  69                 h.logger.Errorf("#SetupResponseNotificationHandler - RAN name: %s - Invalid RAN connection status: %s", request.RanName, nodebInfo.ConnectionStatus)
  70                 return
  71         }
  72
  73         nodebInfo.ConnectionAttempts = 0
  74         nbIdentity := &entities.NbIdentity{InventoryName: inventoryName}
  75         err := h.setupResponseManager.PopulateNodebByPdu(h.logger, nbIdentity, nodebInfo, request.Payload)
  76
  77         if err != nil {
  78                 return
  79         }
  80
  81         rnibErr = h.rnibDataService.SaveNodeb(nbIdentity, nodebInfo)
  82
  83         if rnibErr != nil {
  84                 h.logger.Errorf("#SetupResponseNotificationHandler - RAN name: %s - Error saving RAN to rNib: %v", request.RanName, rnibErr)
  85                 return
  86         }
  87
  88         h.logger.Infof("#SetupResponseNotificationHandler - RAN name: %s - Successfully saved RAN to rNib", request.RanName)
  89         h.logger.Infof("#SetupResponseNotificationHandler - Summary: elapsed time for receiving and handling setup response message from E2 terminator: %f ms", utils.ElapsedTime(request.StartTime))
  90
  91         if !isSuccessSetupResponseMessage(h.msgType) {
  92                 return
  93         }
  94
  95         _ = h.ranStatusChangeManager.Execute(rmrCgo.RAN_CONNECTED, enums.RIC_TO_RAN, nodebInfo)
  96 }
  97
  98 func isConnectionStatusValid(connectionStatus entities.ConnectionStatus) bool {
  99         return connectionStatus == entities.ConnectionStatus_CONNECTING || connectionStatus == entities.ConnectionStatus_CONNECTED
 100 }
 101
 102 func isSuccessSetupResponseMessage(msgType int) bool {
 103         return msgType == rmrCgo.RIC_X2_SETUP_RESP || msgType == rmrCgo.RIC_ENDC_X2_SETUP_RESP
 104 }