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 }
  38
  39 func NewAddEnbRequestHandler(logger *logger.Logger, rNibDataService services.RNibDataService, nodebValidator *managers.NodebValidator) *AddEnbRequestHandler {
  40         return &AddEnbRequestHandler{
  41                 logger:          logger,
  42                 nodebValidator:  nodebValidator,
  43                 rNibDataService: rNibDataService,
  44         }
  45 }
  46
  47 func (h *AddEnbRequestHandler) Handle(request models.Request) (models.IResponse, error) {
  48
  49         addEnbRequest := request.(*models.AddEnbRequest)
  50
  51         h.logger.Infof("#AddEnbRequestHandler.Handle - Ran name: %s", addEnbRequest.RanName)
  52
  53         err := h.validateRequestBody(addEnbRequest)
  54
  55         if err != nil {
  56                 h.logger.Errorf("#AddEnbRequestHandler.Handle - validation failure: %s is a mandatory field and cannot be empty", err)
  57                 return nil, e2managererrors.NewRequestValidationError()
  58         }
  59
  60         _, err = h.rNibDataService.GetNodeb(addEnbRequest.RanName)
  61
  62         if err == nil {
  63                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - RAN already exists. quit", addEnbRequest.RanName)
  64                 return nil, e2managererrors.NewNodebExistsError()
  65         }
  66
  67         _, ok := err.(*common.ResourceNotFoundError)
  68         if !ok {
  69                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - failed to get nodeb entity from RNIB. Error: %s", addEnbRequest.RanName, err)
  70                 return nil, e2managererrors.NewRnibDbError()
  71         }
  72
  73         nbIdentity := h.createNbIdentity(addEnbRequest)
  74         nodebInfo := h.createNodebInfo(addEnbRequest)
  75
  76         err = h.rNibDataService.SaveNodeb(nbIdentity, nodebInfo)
  77
  78         if err != nil {
  79                 h.logger.Errorf("#AddEnbRequestHandler.Handle - RAN name: %s - failed to save nodeb entity in RNIB. Error: %s", addEnbRequest.RanName, err)
  80                 return nil, e2managererrors.NewRnibDbError()
  81         }
  82
  83         return models.NewAddEnbResponse(nodebInfo), nil
  84 }
  85
  86 func (h *AddEnbRequestHandler) createNodebInfo(addEnbRequest *models.AddEnbRequest) *entities.NodebInfo {
  87         nodebInfo := entities.NodebInfo{
  88                 RanName:          addEnbRequest.RanName,
  89                 Ip:               addEnbRequest.Ip,
  90                 Port:             addEnbRequest.Port,
  91                 GlobalNbId:       addEnbRequest.GlobalNbId,
  92                 Configuration:    &entities.NodebInfo_Enb{Enb: addEnbRequest.Enb},
  93                 NodeType:         entities.Node_ENB,
  94                 ConnectionStatus: entities.ConnectionStatus_DISCONNECTED,
  95         }
  96
  97         return &nodebInfo
  98 }
  99
 100 func (h *AddEnbRequestHandler) createNbIdentity(addEnbRequest *models.AddEnbRequest) *entities.NbIdentity {
 101         nbIdentity := entities.NbIdentity{
 102                 GlobalNbId:    addEnbRequest.GlobalNbId,
 103                 InventoryName: addEnbRequest.RanName,
 104         }
 105
 106         return &nbIdentity
 107 }
 108
 109 func (h *AddEnbRequestHandler) validateRequestBody(addEnbRequest *models.AddEnbRequest) error {
 110
 111         if addEnbRequest.RanName == "" {
 112                 return errors.New("ranName")
 113         }
 114
 115         if addEnbRequest.GlobalNbId == nil {
 116                 return errors.New("globalNbId")
 117         }
 118
 119         if err := isGlobalNbIdValid(addEnbRequest.GlobalNbId); err != nil {
 120                 return err
 121         }
 122
 123         if addEnbRequest.Enb == nil {
 124                 return errors.New("enb")
 125         }
 126
 127         if err := h.nodebValidator.IsEnbValid(addEnbRequest.Enb); err != nil {
 128                 return err
 129         }
 130
 131         return nil
 132 }
 133
 134 func isGlobalNbIdValid(globalNbId *entities.GlobalNbId) error {
 135         if globalNbId.PlmnId == "" {
 136                 return errors.New("globalNbId.plmnId")
 137         }
 138
 139         if globalNbId.NbId == "" {
 140                 return errors.New("globalNbId.nbId")
 141         }
 142
 143         return nil
 144 }