X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=E2Manager%2Fhandlers%2Frmrmsghandlers%2Fe2_setup_request_notification_handler.go;h=7420a29197a649cd4e1d4bb343ee2ef9c1b61c04;hb=a07b8597afc9d063a7f37a376a5bcf29ba29b557;hp=405d30d27502e63aaaf850a771db4907f63c11de;hpb=1d12f828b526e4de1d764461f36b8d434277469a;p=ric-plt%2Fe2mgr.git
diff --git a/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler.go b/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler.go
index 405d30d..7420a29 100644
--- a/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler.go
+++ b/E2Manager/handlers/rmrmsghandlers/e2_setup_request_notification_handler.go
@@ -22,13 +22,13 @@ package rmrmsghandlers
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"
@@ -38,30 +38,48 @@ import (
"strings"
)
+var (
+ emptyTagsToReplaceToSelfClosingTags = []string{"reject", "ignore", "transport-resource-unavailable", "om-intervention",
+ "v60s", "v20s", "v10s", "v5s", "v2s", "v1s"}
+)
+
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,
+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,
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)
+ generalConfiguration, err := h.rNibDataService.GetGeneralConfiguration()
+
+ if err != nil {
+ h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - Failed retrieving e2m general configuration. error: %s", err)
+ return
+ }
+
+ if !generalConfiguration.EnableRic {
+ cause := models.Cause{Misc: &models.CauseMisc{OmIntervention: &struct{}{}}}
+ h.handleUnsuccessfulResponse(ranName, request, cause)
+ return
+ }
+
setupRequest, e2tIpAddress, err := h.parseSetupRequest(request.Payload)
if err != nil {
h.logger.Errorf(err.Error())
@@ -79,90 +97,179 @@ func (h E2SetupRequestNotificationHandler) Handle(request *models.NotificationRe
}
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
}
}
- nodebInfo.ConnectionStatus = entities.ConnectionStatus_CONNECTED
+
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 {
+ cause := models.Cause{Transport: &models.CauseTransport{TransportResourceUnavailable: &struct{}{}}}
+ h.handleUnsuccessfulResponse(nodebInfo.RanName, request, cause)
+ }
return
}
- ricNearRtId, err := convertTo20BitString(h.config.GlobalRicId.RicNearRtId)
- if err != nil{
- h.logger.Errorf("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - failed to convert RicNearRtId value %s to 20 bit string . Error: %s", ranName, h.config.GlobalRicId.RicNearRtId, err)
+ 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
+ }
+
+ 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) setGnbFunctions(nodebInfo *entities.NodebInfo, setupRequest *models.E2SetupRequestMessage) error {
+ ranFunctions := setupRequest.ExtractRanFunctionsList()
+
+ if ranFunctions != nil {
+ 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(ranName string, req *models.NotificationRequest, cause models.Cause) {
+ failureResponse := models.NewE2SetupFailureResponseMessage(models.TimeToWaitEnum.V60s, cause)
+ 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", ranName, responsePayload)
+ }
+
+ responsePayload = replaceEmptyTagsWithSelfClosing(responsePayload)
+
+ h.logger.Infof("#E2SetupRequestNotificationHandler.handleUnsuccessfulResponse - payload: %s", responsePayload)
+ msg := models.NewRmrMessage(rmrCgo.RIC_E2_SETUP_FAILURE, 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", ranName, msg)
+ _ = h.rmrSender.WhSend(msg)
+
+}
+
+func (h *E2SetupRequestNotificationHandler) handleSuccessfulResponse(ranName string, req *models.NotificationRequest, setupRequest *models.E2SetupRequestMessage) {
+
+ plmnId := buildPlmnId(h.config.GlobalRicId.Mcc, h.config.GlobalRicId.Mnc)
+
+ ricNearRtId, err := convertTo20BitString(h.config.GlobalRicId.RicId)
+ if err != nil {
return
}
- successResponse := models.NewE2SetupSuccessResponseMessage(h.config.GlobalRicId.PlmnId, ricNearRtId,setupRequest)
- h.logger.Debugf("#E2SetupRequestNotificationHandler.Handle - E2_SETUP_RESPONSE has been built successfully %+v", successResponse)
+ successResponse := models.NewE2SetupSuccessResponseMessage(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.Handle - RAN name: %s - Error marshalling RIC_E2_SETUP_RESP. Payload: %s", ranName, responsePayload)
+ if err != nil {
+ h.logger.Warnf("#E2SetupRequestNotificationHandler.handleSuccessfulResponse - RAN name: %s - Error marshalling RIC_E2_SETUP_RESP. Payload: %s", ranName, responsePayload)
}
- responsePayload = replaceCriticalityTagsWithSelfClosing(responsePayload)
+ responsePayload = replaceEmptyTagsWithSelfClosing(responsePayload)
+
+ h.logger.Infof("#E2SetupRequestNotificationHandler.handleSuccessfulResponse - payload: %s", responsePayload)
- msg := models.NewRmrMessage(rmrCgo.RIC_E2_SETUP_RESP, ranName, responsePayload, request.TransactionId)
- h.logger.Infof("#E2SetupRequestNotificationHandler.Handle - RAN name: %s - RIC_E2_SETUP_RESP message has been built successfully. Message: %x", ranName, msg)
+ 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 replaceCriticalityTagsWithSelfClosing(responsePayload []byte) []byte {
- responseString := strings.Replace(string(responsePayload), "", "", -1)
- responseString = strings.Replace(responseString, "", "", -1)
+func buildPlmnId(mmc string, mnc string) string {
+ var b strings.Builder
+
+ b.WriteByte(mmc[1])
+ b.WriteByte(mmc[0])
+ if len(mnc) == 2 {
+ b.WriteString("F")
+ } else {
+ b.WriteByte(mnc[2])
+ }
+ b.WriteByte(mmc[2])
+ b.WriteByte(mnc[1])
+ b.WriteByte(mnc[0])
+
+ return b.String()
+}
+
+func replaceEmptyTagsWithSelfClosing(responsePayload []byte) []byte {
+
+ emptyTagVsSelfClosingTagPairs := make([]string, len(emptyTagsToReplaceToSelfClosingTags)*2)
+
+ j := 0
+
+ for i := 0; i < len(emptyTagsToReplaceToSelfClosingTags); i++ {
+ emptyTagVsSelfClosingTagPairs[j] = fmt.Sprintf("<%[1]s>", emptyTagsToReplaceToSelfClosingTags[i])
+ emptyTagVsSelfClosingTagPairs[j+1] = fmt.Sprintf("<%s/>", emptyTagsToReplaceToSelfClosingTags[i])
+ j += 2
+ }
+ responseString := strings.NewReplacer(emptyTagVsSelfClosingTagPairs...).Replace(string(responsePayload))
return []byte(responseString)
}
-func convertTo20BitString(ricNearRtId string) (string, error){
+func convertTo20BitString(ricNearRtId string) (string, error) {
r, err := strconv.ParseUint(ricNearRtId, 16, 32)
- if err != nil{
+ if err != nil {
return "", err
}
return fmt.Sprintf("%020b", r)[:20], nil
}
-func (h E2SetupRequestNotificationHandler) parseSetupRequest(payload []byte)(*models.E2SetupRequestMessage, string, error){
+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(normalizeXml(payload[pipInd+1:]), &setupRequest.E2APPDU)
if err != nil {
return nil, "", errors.New(fmt.Sprintf("#E2SetupRequestNotificationHandler.parseSetupRequest - Error unmarshalling E2 Setup Request payload: %x", payload))
}
@@ -170,29 +277,38 @@ func (h E2SetupRequestNotificationHandler) parseSetupRequest(payload []byte)(*mo
return setupRequest, e2tIpAddress, nil
}
-func (h E2SetupRequestNotificationHandler) buildNodebInfo(ranName string, e2tAddress string, request *models.E2SetupRequestMessage) (*entities.NodebInfo, error){
+func normalizeXml(payload []byte) []byte {
+ xmlStr := string(payload)
+ normalized := strings.NewReplacer("<", "<", ">", ">").Replace(xmlStr)
+ return []byte(normalized)
+}
+
+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{}},
- GlobalNbId: &entities.GlobalNbId{
- PlmnId: request.GetPlmnId(),
- NbId: request.GetNbId(),
- },
- }
- nodebInfo.GetGnb().RanFunctions, err = request.GetExtractRanFunctionsList()
+ ConnectionStatus: entities.ConnectionStatus_CONNECTED,
+ RanName: ranName,
+ NodeType: entities.Node_GNB,
+ Configuration: &entities.NodebInfo_Gnb{Gnb: &entities.Gnb{}},
+ GlobalNbId: h.buildGlobalNbId(request),
+ }
+
+ 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
+}