E2Manager/handlers/ranLostConnectionHandler.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 handlers
  19
  20 import (
  21         "e2mgr/logger"
  22         "e2mgr/models"
  23         "e2mgr/rNibWriter"
  24         "e2mgr/sessions"
  25         "fmt"
  26         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
  27         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
  28         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/reader"
  29 )
  30
  31 type RanLostConnectionHandler struct{
  32         rnibReaderProvider func() reader.RNibReader
  33         rnibWriterProvider func() rNibWriter.RNibWriter
  34 }
  35
  36 func NewRanLostConnectionHandler(rnibReaderProvider func() reader.RNibReader, rnibWriterProvider func() rNibWriter.RNibWriter) RanLostConnectionHandler {
  37         return RanLostConnectionHandler{
  38                 rnibReaderProvider: rnibReaderProvider,
  39                 rnibWriterProvider: rnibWriterProvider,
  40         }
  41 }
  42 func (src RanLostConnectionHandler) Handle(logger *logger.Logger, e2Sessions sessions.E2Sessions,
  43         request *models.NotificationRequest, messageChannel chan<- *models.NotificationResponse) {
  44
  45         logger.Warnf("#ranLostConnectionHandler.Handle - Received lost connection (transaction id = %s): %s", request.TransactionId, request.Payload)
  46
  47         var nb *entities.NodebInfo
  48         var rNibErr common.IRNibError
  49         if nb, rNibErr = src.rnibReaderProvider().GetNodeb(request.RanName); rNibErr != nil {
  50                 logger.Errorf("#ranLostConnectionHandler.Handle - transactionId %s: rNib reader failed to retrieve nb entity with RanName: %s. Error: %s", request.TransactionId, request.RanName, rNibErr.Error())
  51         } else {
  52                 logger.Debugf("#ranLostConnectionHandler.Handle - transactionId %s: nb entity has been retrieved. RanName %s, ConnectionStatus %s", request.TransactionId, nb.RanName, nb.ConnectionStatus)
  53                 changeNodebState(logger, nb)
  54                 nbIdentity := &entities.NbIdentity{InventoryName:nb.RanName, GlobalNbId:nb.GlobalNbId}
  55                 if rNibErr = src.rnibWriterProvider().SaveNodeb(nbIdentity, nb); rNibErr != nil {
  56                         logger.Errorf("#ranLostConnectionHandler.Handle - transactionId %s: rNibWriter failed to save nb entity %s. Error: %s", request.TransactionId, nb.RanName, rNibErr.Error())
  57                 } else {
  58                         logger.Infof("#ranLostConnectionHandler.Handle - transactionId %s: saved to rNib", request.TransactionId)
  59                         logger.Debugf("#ranLostConnectionHandler.Handle - transactionId %s: saved to rNib. RanName %s, ConnectionStatus %v", request.TransactionId, nb.RanName, nb.ConnectionStatus)
  60
  61                 }
  62         }
  63         e2session, ok := e2Sessions[request.TransactionId]
  64         printHandlingSetupResponseElapsedTimeInMs(logger, "#ranLostConnectionHandler.Handle - Summary: Elapsed time for receiving and handling sctp error response from E2 terminator", request.StartTime)
  65         if ok {
  66                 printHandlingSetupResponseElapsedTimeInMs(logger, fmt.Sprintf("#ranLostConnectionHandler.Handle- Summary: Total roundtrip elapsed time for transactionId %s", request.TransactionId), e2session.SessionStart)
  67                 delete(e2Sessions, request.TransactionId) // Avoid pinning memory (help GC)
  68         }
  69
  70 }
  71
  72 func changeNodebState(logger *logger.Logger, nb *entities.NodebInfo) {
  73         switch nb.ConnectionStatus{
  74         case entities.ConnectionStatus_CONNECTED, entities.ConnectionStatus_CONNECTING, entities.ConnectionStatus_CONNECTED_SETUP_FAILED:
  75                 nb.ConnectionStatus = entities.ConnectionStatus_DISCONNECTED
  76         case entities.ConnectionStatus_DISCONNECTED:
  77                 logger.Infof("#ranLostConnectionHandler.changeNodebState - nb entity with ConnectionStatus %v occurred. RanName: %s", nb.ConnectionStatus, nb.RanName)
  78         default:
  79                 nb.ConnectionStatus = entities.ConnectionStatus_SHUT_DOWN
  80         }
  81 }