E2Manager/handlers/httpmsghandlers/add_enb_request_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 //  This source code is part of the near-RT RIC (RAN Intelligent Controller)
  18 //  platform project (RICP).
  19
  20 package httpmsghandlers
  21
  22 import (
  23         "e2mgr/e2managererrors"
  24         "e2mgr/logger"
  25         "e2mgr/managers"
  26         "e2mgr/models"
  27         "e2mgr/services"
  28         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
  29         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
  30         "github.com/pkg/errors"
  31 )
  32
  33 type AddEnbRequestHandler struct {
  34         logger          *logger.Logger
  35         nodebValidator  *managers.NodebValidator
  36         rNibDataService services.RNibDataService
  37         ranListManager  managers.RanListManager
  38 }
  39
  40 func NewAddEnbRequestHandler(logger *logger.Logger, rNibDataService services.RNibDataService, nodebValidator *managers.NodebValidator, ranListManager managers.RanListManager) *AddEnbRequestHandler {
  41         return &AddEnbRequestHandler{
  42                 logger:          logger,
  43                 nodebValidator:  nodebValidator,
  44                 rNibDataService: rNibDataService,
  45                 ranListManager:  ranListManager,
  46         }
  47 }
  48
  49 func (h *AddEnbRequestHandler) Handle(request models.Request) (models.IResponse, error) {
  50
  51         addEnbRequest := request.(*models.AddEnbRequest)
  52
  53         h.logger.Infof("#AddEnbRequestHandler.Handle - Ran name: %s", addEnbRequest.RanName)
  54
  55         err := h.validateRequestBody(addEnbRequest)
  56
  57         if err != nil {
  58                 h.logger.Errorf("#AddEnbRequestHandler.Handle - validation failure: %s is a mandatory field and cannot be empty", err)
  59                 return nil, e2managererrors.NewRequestValidationError()
  60         }
  61
  62         _, err = h.rNibDataService.GetNodeb(addEnbRequest.RanName)
  63
  64         if err == nil {
  65                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - RAN already exists. quit", addEnbRequest.RanName)
  66                 return nil, e2managererrors.NewNodebExistsError()
  67         }
  68
  69         _, ok := err.(*common.ResourceNotFoundError)
  70         if !ok {
  71                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - failed to get nodeb entity from RNIB. Error: %s", addEnbRequest.RanName, err)
  72                 return nil, e2managererrors.NewRnibDbError()
  73         }
  74
  75         nodebInfo := h.createNodebInfo(addEnbRequest)
  76         err = h.rNibDataService.AddEnb(nodebInfo)
  77
  78         if err != nil {
  79                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - failed to add eNB entity in RNIB. Error: %s", addEnbRequest.RanName, err)
  80                 return nil, e2managererrors.NewRnibDbError()
  81         }
  82
  83         nbIdentity := h.createNbIdentity(addEnbRequest)
  84         err = h.ranListManager.AddNbIdentity(entities.Node_ENB, nbIdentity)
  85
  86         if err != nil {
  87                 return nil, e2managererrors.NewRnibDbError()
  88         }
  89
  90         return models.NewNodebResponse(nodebInfo), nil
  91 }
  92
  93 func (h *AddEnbRequestHandler) createNodebInfo(addEnbRequest *models.AddEnbRequest) *entities.NodebInfo {
  94         nodebInfo := entities.NodebInfo{
  95                 RanName:          addEnbRequest.RanName,
  96                 Ip:               addEnbRequest.Ip,
  97                 Port:             addEnbRequest.Port,
  98                 GlobalNbId:       addEnbRequest.GlobalNbId,
  99                 Configuration:    &entities.NodebInfo_Enb{Enb: addEnbRequest.Enb},
 100                 NodeType:         entities.Node_ENB,
 101                 ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,
 102         }
 103
 104         return &nodebInfo
 105 }
 106
 107 func (h *AddEnbRequestHandler) createNbIdentity(addEnbRequest *models.AddEnbRequest) *entities.NbIdentity {
 108         return &entities.NbIdentity{
 109                 GlobalNbId:       addEnbRequest.GlobalNbId,
 110                 InventoryName:    addEnbRequest.RanName,
 111                 ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,
 112         }
 113 }
 114
 115 func (h *AddEnbRequestHandler) validateRequestBody(addEnbRequest *models.AddEnbRequest) error {
 116
 117         if addEnbRequest.RanName == "" {
 118                 return errors.New("ranName")
 119         }
 120
 121         if addEnbRequest.GlobalNbId == nil {
 122                 return errors.New("globalNbId")
 123         }
 124
 125         if err := isGlobalNbIdValid(addEnbRequest.GlobalNbId); err != nil {
 126                 return err
 127         }
 128
 129         if addEnbRequest.Enb == nil {
 130                 return errors.New("enb")
 131         }
 132
 133         if err := h.nodebValidator.IsEnbValid(addEnbRequest.Enb); err != nil {
 134                 return err
 135         }
 136
 137         return nil
 138 }
 139
 140 func isGlobalNbIdValid(globalNbId *entities.GlobalNbId) error {
 141         if globalNbId.PlmnId == "" {
 142                 return errors.New("globalNbId.plmnId")
 143         }
 144
 145         if globalNbId.NbId == "" {
 146                 return errors.New("globalNbId.nbId")
 147         }
 148
 149         return nil
 150 }