E2Manager/handlers/httpmsghandlers/health_check_handler.go

   1 //
   2 // Copyright (c) 2020 Samsung Electronics Co., Ltd. All Rights Reserved.
   3 //
   4 // Licensed under the Apache License, Version 2.0 (the "License");
   5 // you may not use this file except in compliance with the License.
   6 // You may obtain a copy of the License at
   7 //
   8 //      http://www.apache.org/licenses/LICENSE-2.0
   9 //
  10 // Unless required by applicable law or agreed to in writing, software
  11 // distributed under the License is distributed on an "AS IS" BASIS,
  12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 // See the License for the specific language governing permissions and
  14 // limitations under the License.
  15
  16 //  This source code is part of the near-RT RIC (RAN Intelligent Controller)
  17 //  platform project (RICP).
  18
  19 package httpmsghandlers
  20
  21 import (
  22         "e2mgr/e2managererrors"
  23         "e2mgr/logger"
  24         "e2mgr/managers"
  25         "e2mgr/models"
  26         "e2mgr/rmrCgo"
  27         "e2mgr/services"
  28         "e2mgr/services/rmrsender"
  29         "e2mgr/utils"
  30         "encoding/xml"
  31         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
  32         "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
  33         "unsafe"
  34 )
  35
  36 var(
  37         healthCheckEmptyTagsToReplaceToSelfClosingTags = []string{"reject", "ignore", "protocolIEs", "procedureCode"}
  38 )
  39
  40 type HealthCheckRequestHandler struct {
  41         logger          *logger.Logger
  42         rNibDataService services.RNibDataService
  43         ranListManager  managers.RanListManager
  44         rmrsender       *rmrsender.RmrSender
  45 }
  46
  47 func NewHealthCheckRequestHandler(logger *logger.Logger, rNibDataService services.RNibDataService, ranListManager managers.RanListManager, rmrsender *rmrsender.RmrSender) *HealthCheckRequestHandler {
  48         return &HealthCheckRequestHandler{
  49                 logger:          logger,
  50                 rNibDataService: rNibDataService,
  51                 ranListManager:  ranListManager,
  52                 rmrsender:       rmrsender,
  53         }
  54 }
  55
  56 func (h *HealthCheckRequestHandler) Handle(request models.Request) (models.IResponse, error) {
  57         ranNameList := h.getRanNameList(request)
  58         isAtleastOneRanConnected := false
  59
  60         nodetypeToNbIdentityMapOld := make(map[entities.Node_Type][]*entities.NbIdentity)
  61         nodetypeToNbIdentityMapNew := make(map[entities.Node_Type][]*entities.NbIdentity)
  62
  63         for _, ranName := range ranNameList {
  64                 nodebInfo, err := h.rNibDataService.GetNodeb(ranName)
  65                 if err != nil {
  66                         _, ok := err.(*common.ResourceNotFoundError)
  67                         if !ok {
  68                                 h.logger.Errorf("#HealthCheckRequest.Handle - failed to get nodeBInfo entity for ran name: %v from RNIB. Error: %s", ranName, err)
  69                                 return nil, e2managererrors.NewRnibDbError()
  70                         }
  71                         continue
  72                 }
  73
  74                 if nodebInfo.ConnectionStatus == entities.ConnectionStatus_CONNECTED {
  75                         isAtleastOneRanConnected = true
  76
  77                         err := h.sendRICServiceQuery(nodebInfo)
  78                         if err != nil {
  79                                 return nil,err
  80                         }
  81
  82                         oldnbIdentity, newnbIdentity := h.ranListManager.UpdateHealthcheckTimeStampSent(ranName)
  83                         nodetypeToNbIdentityMapOld[nodebInfo.NodeType] = append(nodetypeToNbIdentityMapOld[nodebInfo.NodeType], oldnbIdentity)
  84                         nodetypeToNbIdentityMapNew[nodebInfo.NodeType] = append(nodetypeToNbIdentityMapNew[nodebInfo.NodeType], newnbIdentity)
  85                 }
  86         }
  87
  88         for k, _ := range nodetypeToNbIdentityMapOld {
  89                 err := h.ranListManager.UpdateNbIdentities(k, nodetypeToNbIdentityMapOld[k], nodetypeToNbIdentityMapNew[k])
  90                 if err != nil {
  91                         return nil,err
  92                 }
  93         }
  94
  95         if isAtleastOneRanConnected == false {
  96                 return nil, e2managererrors.NewNoConnectedRanError()
  97         }
  98
  99         h.logger.Infof("#HealthcheckRequest.Handle - HealthcheckTimeStampSent Update completed to RedisDB")
 100
 101         return nil, nil
 102 }
 103
 104 func (h *HealthCheckRequestHandler) sendRICServiceQuery(nodebInfo *entities.NodebInfo) error {
 105
 106         serviceQuery := models.NewRicServiceQueryMessage(nodebInfo.GetGnb().RanFunctions)
 107         payLoad, err := xml.Marshal(serviceQuery.E2APPDU)
 108         if err != nil {
 109                 h.logger.Errorf("#HealthCHeckRequest.Handle- RAN name: %s - Error marshalling RIC_SERVICE_QUERY. Payload: %s", nodebInfo.RanName, payLoad)
 110                 //return nil, e2managererrors.NewInternalError()
 111         }
 112
 113         payLoad = utils.ReplaceEmptyTagsWithSelfClosing(payLoad,healthCheckEmptyTagsToReplaceToSelfClosingTags)
 114
 115         var xAction []byte
 116         var msgSrc unsafe.Pointer
 117         msg := models.NewRmrMessage(rmrCgo.RIC_SERVICE_QUERY, nodebInfo.RanName, payLoad, xAction, msgSrc)
 118
 119         err = h.rmrsender.Send(msg)
 120
 121         if err != nil {
 122                 h.logger.Errorf("#HealthCHeckRequest.Handle - failed to send RIC_SERVICE_QUERY message to RMR for %s. Error: %s", nodebInfo.RanName, err)
 123                 //return nil, e2managererrors.NewRmrError()
 124         } else {
 125                 h.logger.Infof("#HealthCHeckRequest.Handle - RAN name : %s - Successfully built and sent RIC_SERVICE_QUERY. Message: %x", nodebInfo.RanName, msg)
 126         }
 127
 128         return nil
 129 }
 130
 131 func (h *HealthCheckRequestHandler) getRanNameList(request models.Request) []string {
 132         healthCheckRequest := request.(models.HealthCheckRequest)
 133         if request != nil && len(healthCheckRequest.RanList) != 0 {
 134                 return healthCheckRequest.RanList
 135         }
 136
 137         h.logger.Infof("#HealthcheckRequest.getRanNameList - Empty request sent, fetching all connected NbIdentitylist")
 138
 139         nodeIds := h.ranListManager.GetNbIdentityList()
 140         var ranNameList []string
 141
 142         for _, nbIdentity := range nodeIds {
 143                 if nbIdentity.ConnectionStatus == entities.ConnectionStatus_CONNECTED {
 144                         ranNameList = append(ranNameList, nbIdentity.InventoryName)
 145                 }
 146         }
 147
 148         return ranNameList
 149 }