import (
"bytes"
"e2mgr/configuration"
+ "e2mgr/e2managererrors"
"e2mgr/logger"
"e2mgr/managers"
"e2mgr/models"
"e2mgr/rmrCgo"
"e2mgr/services"
"e2mgr/services/rmrsender"
- "e2mgr/utils"
"encoding/xml"
"errors"
"fmt"
"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/common"
"gerrit.o-ran-sc.org/r/ric-plt/nodeb-rnib.git/entities"
+ "strconv"
+ "strings"
)
type E2SetupRequestNotificationHandler struct {
- logger *logger.Logger
- config *configuration.Configuration
- e2tInstancesManager managers.IE2TInstancesManager
- rmrSender *rmrsender.RmrSender
+ logger *logger.Logger
+ config *configuration.Configuration
+ e2tInstancesManager managers.IE2TInstancesManager
+ rmrSender *rmrsender.RmrSender
rNibDataService services.RNibDataService
e2tAssociationManager *managers.E2TAssociationManager
}
func NewE2SetupRequestNotificationHandler(logger *logger.Logger, config *configuration.Configuration, e2tInstancesManager managers.IE2TInstancesManager, rmrSender *rmrsender.RmrSender, rNibDataService services.RNibDataService, e2tAssociationManager *managers.E2TAssociationManager) E2SetupRequestNotificationHandler {
return E2SetupRequestNotificationHandler{
- logger: logger,
- config: config,
- e2tInstancesManager: e2tInstancesManager,
- rmrSender: rmrSender,
- rNibDataService: rNibDataService,
+ logger: logger,
+ config: config,
+ e2tInstancesManager: e2tInstancesManager,
+ rmrSender: rmrSender,
+ rNibDataService: rNibDataService,
e2tAssociationManager: e2tAssociationManager,
}
}
-func (h E2SetupRequestNotificationHandler) Handle(request *models.NotificationRequest){
+func (h E2SetupRequestNotificationHandler) Handle(request *models.NotificationRequest) {
ranName := request.RanName
- h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - received E2 Setup Request. Payload: %x", ranName, request.Payload)
+ h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - received E2_SETUP_REQUEST. Payload: %x", ranName, request.Payload)
setupRequest, e2tIpAddress, err := h.parseSetupRequest(request.Payload)
if err != nil {
}
h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - E2T Address: %s - handling E2_SETUP_REQUEST", e2tIpAddress)
+ h.logger.Debugf("#E2SetupRequestNotificationHandler.Handle - E2_SETUP_REQUEST has been parsed successfully %+v", setupRequest)
_, err = h.e2tInstancesManager.GetE2TInstance(e2tIpAddress)
}
nodebInfo, err := h.rNibDataService.GetNodeb(ranName)
- if err != nil{
- if _, ok := err.(*common.ResourceNotFoundError); ok{
- nbIdentity := h.buildNbIdentity(ranName, setupRequest)
- nodebInfo, err = h.buildNodebInfo(ranName, e2tIpAddress, setupRequest)
- if err != nil{
- h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to build nodebInfo entity. Error: %s", ranName, err)
- return
- }
- err = h.rNibDataService.SaveNodeb(nbIdentity, nodebInfo)
- if err != nil{
- h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to save nodebInfo entity. Error: %s", ranName, err)
- return
- }
- } else{
+
+ if err != nil {
+
+ if _, ok := err.(*common.ResourceNotFoundError); !ok {
h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to retrieve nodebInfo entity. Error: %s", ranName, err)
return
+
}
- } else {
- if nodebInfo.ConnectionStatus == entities.ConnectionStatus_SHUTTING_DOWN {
- h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s, connection status: %s - nodeB entity in incorrect state", nodebInfo.RanName, nodebInfo.ConnectionStatus)
- h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - Summary: elapsed time for receiving and handling setup request message from E2 terminator: %f ms", utils.ElapsedTime(request.StartTime))
+ if nodebInfo, err = h.handleNewRan(ranName, e2tIpAddress, setupRequest); err != nil {
return
}
- nodebInfo.GetGnb().RanFunctions, err = setupRequest.GetExtractRanFunctionsList()
- if err != nil{
- h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to update nodebInfo entity. Error: %s", ranName, err)
+
+ } else {
+ if err = h.handleExistingRan(ranName, nodebInfo, setupRequest); err != nil {
return
}
}
+
err = h.e2tAssociationManager.AssociateRan(e2tIpAddress, nodebInfo)
- if err != nil{
+
+ if err != nil {
+
h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to associate E2T to nodeB entity. Error: %s", ranName, err)
+ if _, ok := err.(*e2managererrors.RoutingManagerError); ok {
+ h.handleUnsuccessfulResponse(nodebInfo, request)
+ }
return
}
- successResponse := models.NewE2SetupSuccessResponseMessage()
- successResponse.SetPlmnId(h.config.GlobalRicId.PlmnId)
- successResponse.SetRicId(h.config.GlobalRicId.RicNearRtId)
- successResponse.SetExtractRanFunctionsIDList(setupRequest)
- responsePayload, err := xml.Marshal(&successResponse.E2APPDU)
- if err != nil{
- h.logger.Warnf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - Error marshalling E2 Setup Response. Response: %x", ranName, responsePayload)
+ h.handleSuccessfulResponse(ranName, request, setupRequest)
+}
+
+func (h E2SetupRequestNotificationHandler) handleNewRan(ranName string, e2tIpAddress string, setupRequest *models.E2SetupRequestMessage) (*entities.NodebInfo, error) {
+
+ nodebInfo, err := h.buildNodebInfo(ranName, e2tIpAddress, setupRequest)
+
+ if err != nil {
+ h.logger.Errorf("#E2SetupRequestNotificationHandler.handleNewRan - RAN name: %s - failed to build nodebInfo entity. Error: %s", ranName, err)
+ return nil, err
}
- msg := models.NewRmrMessage(rmrCgo.RIC_E2_SETUP_RESP, ranName, responsePayload, request.TransactionId)
- h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - E2 Setup Request has been built. Message: %x", ranName, msg)
- _ = h.rmrSender.Send(msg)
+
+ nbIdentity := h.buildNbIdentity(ranName, setupRequest)
+ err = h.rNibDataService.SaveNodeb(nbIdentity, nodebInfo)
+
+ if err != nil {
+ h.logger.Errorf("#E2SetupRequestNotificationHandler.handleNewRan - RAN name: %s - failed to save nodebInfo entity. Error: %s", ranName, err)
+ return nil, err
+ }
+
+ return nodebInfo, nil
}
-func (h E2SetupRequestNotificationHandler) parseSetupRequest(payload []byte)(*models.E2SetupRequestMessage, string, error){
+func (h E2SetupRequestNotificationHandler) setGnbFunctions(nodebInfo *entities.NodebInfo, setupRequest *models.E2SetupRequestMessage) error {
+ ranFunctions, err := setupRequest.ExtractRanFunctionsList()
- colonInd := bytes.IndexByte(payload, ':')
- if colonInd < 0 {
- return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Error parsing E2 Setup Request, failed extract E2T IP Address: no ':' separator found")
+ if err != nil {
+ h.logger.Errorf("#E2SetupRequestNotificationHandler.setGnbFunctions - RAN name: %s - failed to update nodebInfo entity. Error: %s", nodebInfo.GetRanName(), err)
+ return err
}
- e2tIpAddress := string(payload[:colonInd])
- if len(e2tIpAddress) == 0 {
- return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Empty E2T Address received")
+ nodebInfo.GetGnb().RanFunctions = ranFunctions
+ return nil
+}
+
+func (h E2SetupRequestNotificationHandler) handleExistingRan(ranName string, nodebInfo *entities.NodebInfo, setupRequest *models.E2SetupRequestMessage) error {
+ if nodebInfo.GetConnectionStatus() == entities.ConnectionStatus_SHUTTING_DOWN {
+ h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s, connection status: %s - nodeB entity in incorrect state", ranName, nodebInfo.ConnectionStatus)
+ return errors.New("nodeB entity in incorrect state")
+ }
+
+ err := h.setGnbFunctions(nodebInfo, setupRequest)
+ return err
+}
+
+func (h E2SetupRequestNotificationHandler) handleUnsuccessfulResponse(nodebInfo *entities.NodebInfo, req *models.NotificationRequest) {
+ failureResponse := models.NewE2SetupFailureResponseMessage(models.TimeToWaitEnum.V60s)
+ h.logger.Debugf("#E2SetupRequestNotificationHandler.handleUnsuccessfulResponse - E2_SETUP_RESPONSE has been built successfully %+v", failureResponse)
+
+ responsePayload, err := xml.Marshal(&failureResponse.E2APPDU)
+ if err != nil {
+ h.logger.Warnf("#E2SetupRequestNotificationHandler.handleUnsuccessfulResponse - RAN name: %s - Error marshalling RIC_E2_SETUP_RESP. Payload: %s", nodebInfo.RanName, responsePayload)
}
+ responsePayload = replaceEmptyTagsWithSelfClosing(responsePayload)
+
+ msg := models.NewRmrMessage(rmrCgo.RIC_E2_SETUP_FAILURE, nodebInfo.RanName, responsePayload, req.TransactionId, req.GetMsgSrc())
+ h.logger.Infof("#E2SetupRequestNotificationHandler.handleUnsuccessfulResponse - RAN name: %s - RIC_E2_SETUP_RESP message has been built successfully. Message: %x", nodebInfo.RanName, msg)
+ _ = h.rmrSender.WhSend(msg)
+
+}
+
+func (h E2SetupRequestNotificationHandler) handleSuccessfulResponse(ranName string, req *models.NotificationRequest, setupRequest *models.E2SetupRequestMessage) {
+
+ ricNearRtId, err := convertTo20BitString(h.config.GlobalRicId.RicNearRtId)
+ if err != nil {
+ h.logger.Errorf("#E2SetupRequestNotificationHandler.handleSuccessfulResponse - RAN name: %s - failed to convert RicNearRtId value %s to 20 bit string . Error: %s", ranName, h.config.GlobalRicId.RicNearRtId, err)
+ return
+ }
+ successResponse := models.NewE2SetupSuccessResponseMessage(h.config.GlobalRicId.PlmnId, ricNearRtId, setupRequest)
+ h.logger.Debugf("#E2SetupRequestNotificationHandler.handleSuccessfulResponse - E2_SETUP_RESPONSE has been built successfully %+v", successResponse)
+
+ responsePayload, err := xml.Marshal(&successResponse.E2APPDU)
+ if err != nil {
+ h.logger.Warnf("#E2SetupRequestNotificationHandler.handleSuccessfulResponse - RAN name: %s - Error marshalling RIC_E2_SETUP_RESP. Payload: %s", ranName, responsePayload)
+ }
+
+ responsePayload = replaceEmptyTagsWithSelfClosing(responsePayload)
+
+ msg := models.NewRmrMessage(rmrCgo.RIC_E2_SETUP_RESP, ranName, responsePayload, req.TransactionId, req.GetMsgSrc())
+ h.logger.Infof("#E2SetupRequestNotificationHandler.handleSuccessfulResponse - RAN name: %s - RIC_E2_SETUP_RESP message has been built successfully. Message: %x", ranName, msg)
+ _ = h.rmrSender.Send(msg)
+}
+
+func replaceEmptyTagsWithSelfClosing(responsePayload []byte) []byte {
+ responseString := strings.NewReplacer(
+ "<reject></reject>", "<reject/>",
+ "<ignore></ignore>", "<ignore/>",
+ "<transport-resource-unavailable></transport-resource-unavailable>", "<transport-resource-unavailable/>",
+ "<v60s></v60s>", "<v60s/>",
+ "<v20s></v20s>", "<v20s/>",
+ "<v10s></v10s>", "<v10s/>",
+ "<v5s></v5s>", "<v5s/>",
+ "<v2s></v2s>", "<v2s/>",
+ "<v1s></v1s>", "<v1s/>",
+ ).Replace(string(responsePayload))
+ return []byte(responseString)
+}
+
+func convertTo20BitString(ricNearRtId string) (string, error) {
+ r, err := strconv.ParseUint(ricNearRtId, 16, 32)
+ if err != nil {
+ return "", err
+ }
+ return fmt.Sprintf("%020b", r)[:20], nil
+}
+
+func (h E2SetupRequestNotificationHandler) parseSetupRequest(payload []byte) (*models.E2SetupRequestMessage, string, error) {
+
pipInd := bytes.IndexByte(payload, '|')
if pipInd < 0 {
- return nil, "", errors.New( "#E2SetupRequestNotificationHandler.parseSetupRequest - Error parsing E2 Setup Request failed extract Payload: no | separator found")
+ return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Error parsing E2 Setup Request failed extract Payload: no | separator found")
}
+ e2tIpAddress := string(payload[:pipInd])
+ if len(e2tIpAddress) == 0 {
+ return nil, "", errors.New("#E2SetupRequestNotificationHandler.parseSetupRequest - Empty E2T Address received")
+ }
+
+ h.logger.Infof("#E2SetupRequestNotificationHandler.parseSetupRequest - payload: %s", payload[pipInd+1:])
+
setupRequest := &models.E2SetupRequestMessage{}
- err := xml.Unmarshal(payload[pipInd + 1:], &setupRequest.E2APPDU)
+ err := xml.Unmarshal(payload[pipInd+1:], &setupRequest.E2APPDU)
if err != nil {
return nil, "", errors.New(fmt.Sprintf("#E2SetupRequestNotificationHandler.parseSetupRequest - Error unmarshalling E2 Setup Request payload: %x", payload))
}
return setupRequest, e2tIpAddress, nil
}
-func (h E2SetupRequestNotificationHandler) buildNodebInfo(ranName string, e2tAddress string, request *models.E2SetupRequestMessage) (*entities.NodebInfo, error){
+func (h E2SetupRequestNotificationHandler) buildNodebInfo(ranName string, e2tAddress string, request *models.E2SetupRequestMessage) (*entities.NodebInfo, error) {
+
var err error
nodebInfo := &entities.NodebInfo{
AssociatedE2TInstanceAddress: e2tAddress,
- ConnectionStatus: entities.ConnectionStatus_CONNECTED,
- RanName: ranName,
- NodeType: entities.Node_GNB,
- Configuration: &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{}},
+ ConnectionStatus: entities.ConnectionStatus_CONNECTED,
+ RanName: ranName,
+ NodeType: entities.Node_GNB,
+ Configuration: &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{}},
+ GlobalNbId: h.buildGlobalNbId(request),
}
- nodebInfo.GetGnb().RanFunctions, err = request.GetExtractRanFunctionsList()
+
+ err = h.setGnbFunctions(nodebInfo, request)
return nodebInfo, err
}
-func (h E2SetupRequestNotificationHandler) buildNbIdentity(ranName string, setupRequest *models.E2SetupRequestMessage)*entities.NbIdentity{
+func (h E2SetupRequestNotificationHandler) buildGlobalNbId(setupRequest *models.E2SetupRequestMessage) *entities.GlobalNbId {
+ return &entities.GlobalNbId{
+ PlmnId: setupRequest.GetPlmnId(),
+ NbId: setupRequest.GetNbId(),
+ }
+}
+
+func (h E2SetupRequestNotificationHandler) buildNbIdentity(ranName string, setupRequest *models.E2SetupRequestMessage) *entities.NbIdentity {
return &entities.NbIdentity{
- InventoryName:ranName,
- GlobalNbId: &entities.GlobalNbId{
- PlmnId: setupRequest.GetPlmnId(),
- NbId: setupRequest.GetNbId(),
- },
+ InventoryName: ranName,
+ GlobalNbId: h.buildGlobalNbId(setupRequest),
}
-}
\ No newline at end of file
+}
Code Review / ric-plt / e2mgr.git / blobdiff