2 // Copyright 2019 AT&T Intellectual Property
3 // Copyright 2019 Nokia
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
9 // http://www.apache.org/licenses/LICENSE-2.0
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.
17 // This source code is part of the near-RT RIC (RAN Intelligent Controller)
18 // platform project (RICP).
20 package rmrmsghandlers
29 "e2mgr/services/rmrsender"
34 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
35 "gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
38 type E2SetupRequestNotificationHandler struct {
40 e2tInstancesManager managers.IE2TInstancesManager
41 rmrSender *rmrsender.RmrSender
42 rNibDataService services.RNibDataService
43 e2tAssociationManager *managers.E2TAssociationManager
46 func NewE2SetupRequestNotificationHandler(logger *logger.Logger, e2tInstancesManager managers.IE2TInstancesManager, rmrSender *rmrsender.RmrSender, rNibDataService services.RNibDataService, e2tAssociationManager *managers.E2TAssociationManager) E2SetupRequestNotificationHandler {
47 return E2SetupRequestNotificationHandler{
49 e2tInstancesManager: e2tInstancesManager,
51 rNibDataService: rNibDataService,
52 e2tAssociationManager: e2tAssociationManager,
56 func (h E2SetupRequestNotificationHandler) Handle(request *models.NotificationRequest){
57 ranName := request.RanName
58 h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - received E2 Setup Request. Payload: %x", ranName, request.Payload)
60 setupRequest, e2tIpAddress, err := h.parseSetupRequest(request.Payload)
62 h.logger.Errorf(err.Error())
66 h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - E2T Address: %s - handling E2_SETUP_REQUEST", e2tIpAddress)
68 _, err = h.e2tInstancesManager.GetE2TInstance(e2tIpAddress)
71 h.logger.Errorf("#E2TermInitNotificationHandler.Handle - Failed retrieving E2TInstance. error: %s", err)
75 nodebInfo, err := h.rNibDataService.GetNodeb(ranName)
77 if _, ok := err.(*common.ResourceNotFoundError); ok{
78 nbIdentity := h.buildNbIdentity(ranName, setupRequest)
79 nodebInfo = h.buildNodebInfo(ranName, e2tIpAddress, setupRequest)
80 err = h.rNibDataService.SaveNodeb(nbIdentity, nodebInfo)
82 h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to save nodebInfo entity. Error: %s", ranName, err)
86 h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to retrieve nodebInfo entity. Error: %s", ranName, err)
91 if nodebInfo.ConnectionStatus == entities.ConnectionStatus_SHUTTING_DOWN {
92 h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s, connection status: %s - nodeB entity in incorrect state", nodebInfo.RanName, nodebInfo.ConnectionStatus)
93 h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - Summary: elapsed time for receiving and handling setup request message from E2 terminator: %f ms", utils.ElapsedTime(request.StartTime))
96 h.updateNodeBFunctions(nodebInfo, setupRequest)
98 err = h.e2tAssociationManager.AssociateRan(e2tIpAddress, nodebInfo)
100 h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to associate E2T to nodeB entity. Error: %s", ranName, err)
103 successResponse := &models.E2SetupSuccessResponseMessage{}
104 successResponse.SetPlmnId(setupRequest.GetPlmnId())
105 successResponse.SetNbId("&" + fmt.Sprintf("%020b", 0xf0))
106 responsePayload, err := xml.Marshal(successResponse)
108 h.logger.Warnf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - Error marshalling E2 Setup Response. Response: %x", ranName, responsePayload)
110 msg := models.NewRmrMessage(rmrCgo.RIC_E2_SETUP_RESP, ranName, responsePayload, request.TransactionId)
111 h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - E2 Setup Request has been built. Message: %x", ranName, msg)
112 //TODO err = h.rmrSender.Send(msg)
116 func (h E2SetupRequestNotificationHandler) parseSetupRequest(payload []byte)(*models.E2SetupRequestMessage, string, error){
118 colonInd := bytes.IndexByte(payload, ':')
120 return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Error parsing E2 Setup Request, failed extract E2T IP Address: no ':' separator found")
123 e2tIpAddress := string(payload[:colonInd])
124 if len(e2tIpAddress) == 0 {
125 return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Empty E2T Address received")
128 pipInd := bytes.IndexByte(payload, '|')
130 return nil, "", errors.New( "#E2SetupRequestNotificationHandler.parseSetupRequest - Error parsing E2 Setup Request failed extract Payload: no | separator found")
133 setupRequest := &models.E2SetupRequestMessage{}
134 err := xml.Unmarshal(payload[pipInd + 1:], &setupRequest)
136 return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Error unmarshalling E2 Setup Request payload: %s")
139 return setupRequest, e2tIpAddress, nil
142 func (h E2SetupRequestNotificationHandler) updateNodeBFunctions(nodeB *entities.NodebInfo, request *models.E2SetupRequestMessage){
143 //TODO the function should be implemented in the scope of the US 192 "Save the entire Setup request in RNIB"
146 func (h E2SetupRequestNotificationHandler) buildNodebInfo(ranName string, e2tAddress string, request *models.E2SetupRequestMessage) *entities.NodebInfo{
147 nodebInfo := &entities.NodebInfo{
148 AssociatedE2TInstanceAddress: e2tAddress,
149 ConnectionStatus: entities.ConnectionStatus_CONNECTED,
151 NodeType: entities.Node_GNB,
152 Configuration: &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{}},
154 h.updateNodeBFunctions(nodebInfo, request)
158 func (h E2SetupRequestNotificationHandler) buildNbIdentity(ranName string, setupRequest *models.E2SetupRequestMessage)*entities.NbIdentity{
159 return &entities.NbIdentity{
160 InventoryName:ranName,
161 GlobalNbId: &entities.GlobalNbId{
162 PlmnId: setupRequest.GetPlmnId(),
163 NbId: setupRequest.GetNbId(),