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         enbType := addEnbRequest.Enb.GetEnbType()
  63         if h.nodebValidator.IsNgEnbType(enbType){
  64                 h.logger.Errorf("#AddEnbRequestHandler.Handle - validation failure: enb type is not supported. enb type: %s", enbType)
  65                 return nil, e2managererrors.NewRequestValidationError()
  66         }
  67
  68         _, err = h.rNibDataService.GetNodeb(addEnbRequest.RanName)
  69
  70         if err == nil {
  71                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - RAN already exists. quit", addEnbRequest.RanName)
  72                 return nil, e2managererrors.NewNodebExistsError()
  73         }
  74
  75         _, ok := err.(*common.ResourceNotFoundError)
  76         if !ok {
  77                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - failed to get nodeb entity from RNIB. Error: %s", addEnbRequest.RanName, err)
  78                 return nil, e2managererrors.NewRnibDbError()
  79         }
  80
  81         nodebInfo := h.createNodebInfo(addEnbRequest)
  82         err = h.rNibDataService.AddEnb(nodebInfo)
  83
  84         if err != nil {
  85                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - failed to add eNB entity in RNIB. Error: %s", addEnbRequest.RanName, err)
  86                 return nil, e2managererrors.NewRnibDbError()
  87         }
  88
  89         nbIdentity := h.createNbIdentity(addEnbRequest)
  90         err = h.ranListManager.AddNbIdentity(entities.Node_ENB, nbIdentity)
  91
  92         if err != nil {
  93                 return nil, e2managererrors.NewRnibDbError()
  94         }
  95
  96         return models.NewNodebResponse(nodebInfo), nil
  97 }
  98
  99 func (h *AddEnbRequestHandler) createNodebInfo(addEnbRequest *models.AddEnbRequest) *entities.NodebInfo {
 100         nodebInfo := entities.NodebInfo{
 101                 RanName:          addEnbRequest.RanName,
 102                 Ip:               addEnbRequest.Ip,
 103                 Port:             addEnbRequest.Port,
 104                 GlobalNbId:       addEnbRequest.GlobalNbId,
 105                 Configuration:    &entities.NodebInfo_Enb{Enb: addEnbRequest.Enb},
 106                 NodeType:         entities.Node_ENB,
 107                 ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,
 108                 SetupFromNetwork: false,
 109         }
 110
 111         return &nodebInfo
 112 }
 113
 114 func (h *AddEnbRequestHandler) createNbIdentity(addEnbRequest *models.AddEnbRequest) *entities.NbIdentity {
 115         return &entities.NbIdentity{
 116                 GlobalNbId:       addEnbRequest.GlobalNbId,
 117                 InventoryName:    addEnbRequest.RanName,
 118                 ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,
 119         }
 120 }
 121
 122 func (h *AddEnbRequestHandler) validateRequestBody(addEnbRequest *models.AddEnbRequest) error {
 123
 124         if addEnbRequest.RanName == "" {
 125                 return errors.New("ranName")
 126         }
 127
 128         if addEnbRequest.GlobalNbId == nil {
 129                 return errors.New("globalNbId")
 130         }
 131
 132         if err := isGlobalNbIdValid(addEnbRequest.GlobalNbId); err != nil {
 133                 return err
 134         }
 135
 136         if addEnbRequest.Enb == nil {
 137                 return errors.New("enb")
 138         }
 139
 140         if err := h.nodebValidator.IsEnbValid(addEnbRequest.Enb); err != nil {
 141                 return err
 142         }
 143
 144         return nil
 145 }
 146
 147 func isGlobalNbIdValid(globalNbId *entities.GlobalNbId) error {
 148         if globalNbId.PlmnId == "" {
 149                 return errors.New("globalNbId.plmnId")
 150         }
 151
 152         if globalNbId.NbId == "" {
 153                 return errors.New("globalNbId.nbId")
 154         }
 155
 156         return nil
 157 }