+ xapp.Run(c)
+}
+
+func (c *Control) rmrSend(params *xapp.RMRParams) (err error) {
+ status := false
+ i := 1
+ for ; i <= 10 && status == false; i++ {
+ c.rmrSendMutex.Lock()
+ status = xapp.Rmr.Send(params, false)
+ c.rmrSendMutex.Unlock()
+ if status == false {
+ xapp.Logger.Info("rmr.Send() failed. Retry count %v, Mtype: %v, SubId: %v, Xid %s", i, params.Mtype, params.SubId, params.Xid)
+ time.Sleep(500 * time.Millisecond)
+ }
+ }
+ if status == false {
+ err = errors.New("rmr.Send() failed")
+ xapp.Rmr.Free(params.Mbuf)
+ }
+ return
+}
+
+func (c *Control) rmrReplyToSender(params *xapp.RMRParams) (err error) {
+ c.rmrSend(params)
+ return
+}
+
+func (c *Control) Consume(msg *xapp.RMRParams) (err error) {
+ c.msgCounter++
+ switch msg.Mtype {
+ case xapp.RICMessageTypes["RIC_SUB_REQ"]:
+ go c.handleSubscriptionRequest(msg)
+ case xapp.RICMessageTypes["RIC_SUB_RESP"]:
+ go c.handleSubscriptionResponse(msg)
+ case xapp.RICMessageTypes["RIC_SUB_FAILURE"]:
+ go c.handleSubscriptionFailure(msg)
+ case xapp.RICMessageTypes["RIC_SUB_DEL_REQ"]:
+ go c.handleSubscriptionDeleteRequest(msg)
+ case xapp.RICMessageTypes["RIC_SUB_DEL_RESP"]:
+ go c.handleSubscriptionDeleteResponse(msg)
+ case xapp.RICMessageTypes["RIC_SUB_DEL_FAILURE"]:
+ go c.handleSubscriptionDeleteFailure(msg)
+ default:
+ xapp.Logger.Info("Unknown Message Type '%d', discarding", msg.Mtype)
+ }
+ return nil
+}
+
+func (c *Control) handleSubscriptionRequest(params *xapp.RMRParams) {
+ xapp.Logger.Info("SubReq received from Src: %s, Mtype: %v, SubId: %v, Xid: %s, Meid: %v", params.Src, params.Mtype, params.SubId, params.Xid, params.Meid)
+ xapp.Rmr.Free(params.Mbuf)
+ params.Mbuf = nil
+
+ /* Reserve a sequence number and set it in the payload */
+ subs := c.registry.ReserveSubscription()
+ if subs == nil {
+ xapp.Logger.Error("SubReq: Failed to reserve sequence number. Dropping this msg. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ return
+ }
+
+ params.SubId = int(subs.Seq)
+ err := c.e2ap.SetSubscriptionRequestSequenceNumber(params.Payload, subs.Seq)
+ if err != nil {
+ xapp.Logger.Error("SubReq: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, SubId: %v, Xid: %s, Payload %X", err, params.SubId, params.Xid, params.Payload)
+ c.registry.releaseSequenceNumber(subs.Seq)
+ return
+ }
+
+ srcAddr, srcPort, err := c.rtmgrClient.SplitSource(params.Src)
+ if err != nil {
+ xapp.Logger.Error("SubReq: Failed to update routing-manager. Dropping this msg. Err: %s, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ c.registry.releaseSequenceNumber(subs.Seq)
+ return
+ }
+
+ // Create transatcion record for every subscription request
+ var forwardRespToXapp bool = true
+ var responseReceived bool = false
+ transaction, err := c.tracker.TrackTransaction(subs.Seq, CREATE, *srcAddr, *srcPort, params, responseReceived, forwardRespToXapp)
+ if err != nil {
+ xapp.Logger.Error("SubReq: Failed to create transaction record. Dropping this msg. Err: %v SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ c.registry.releaseSequenceNumber(subs.Seq)
+ return
+ }
+
+ // Update routing manager about the new subscription
+ subRouteAction := transaction.SubRouteInfo()
+ xapp.Logger.Info("SubReq: Starting routing manager update. SubId: %v, Xid: %s", params.SubId, params.Xid)
+
+ err = c.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ if err != nil {
+ xapp.Logger.Error("SubReq: Failed to update routing manager. Dropping this msg. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ c.registry.releaseSequenceNumber(subs.Seq)
+ return
+ }
+
+ // Setting new subscription ID in the RMR header
+ xapp.Logger.Info("SubReq: Forwarding SubReq to E2T: Mtype: %v, SubId: %v, Xid %s, Meid %v", params.Mtype, params.SubId, params.Xid, params.Meid)
+ err = c.rmrSend(params)
+ if err != nil {
+ xapp.Logger.Error("SubReq: Failed to send request to E2T %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+ c.timerMap.StartTimer("RIC_SUB_REQ", int(subs.Seq), subReqTime, FirstTry, c.handleSubscriptionRequestTimer)
+ xapp.Logger.Debug("SubReq: Debugging transaction table = %v", c.tracker.transactionTable)
+ return
+}
+
+func (c *Control) handleSubscriptionResponse(params *xapp.RMRParams) {
+ xapp.Logger.Info("SubResp received from Src: %s, Mtype: %v, SubId: %v, Meid: %v", params.Src, params.Mtype, params.SubId, params.Meid)
+ xapp.Rmr.Free(params.Mbuf)
+ params.Mbuf = nil
+
+ payloadSeqNum, err := c.e2ap.GetSubscriptionResponseSequenceNumber(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubResp: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, SubId: %v, Xid: %s, Payload %X", err, params.SubId, params.Xid, params.Payload)
+ return
+ }
+ xapp.Logger.Info("SubResp: Received payloadSeqNum: %v", payloadSeqNum)
+
+ if !c.registry.IsValidSequenceNumber(payloadSeqNum) {
+ xapp.Logger.Error("SubResp: Unknown payloadSeqNum. Dropping this msg. PayloadSeqNum: %v, SubId: %v", payloadSeqNum, params.SubId)
+ return
+ }
+
+ c.timerMap.StopTimer("RIC_SUB_REQ", int(payloadSeqNum))
+
+ transaction, responseReceived, err := c.tracker.CheckResponseReceived(payloadSeqNum, CREATE)
+ if err != nil {
+ xapp.Logger.Info("SubResp: Dropping this msg. Err: %v SubId: %v", err, payloadSeqNum)
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription timer already received
+ return
+ }
+ xapp.Logger.Info("SubResp: SubId: %v, from address: %v:%v.", payloadSeqNum, transaction.Xappkey.Addr, transaction.Xappkey.Port)
+
+ c.registry.setSubscriptionToConfirmed(payloadSeqNum)
+
+ params.SubId = int(payloadSeqNum)
+ params.Xid = transaction.OrigParams.Xid
+
+ xapp.Logger.Info("SubResp: Forwarding Subscription Response to xApp Mtype: %v, SubId: %v, Meid: %v", params.Mtype, params.SubId, params.Meid)
+ err = c.rmrReplyToSender(params)
+ if err != nil {
+ xapp.Logger.Error("SubResp: Failed to send response to xApp. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+
+ xapp.Logger.Info("SubResp: SubId: %v, from address: %v:%v. Deleting transaction record", payloadSeqNum, transaction.Xappkey.Addr, transaction.Xappkey.Port)
+ _, err = c.tracker.completeTransaction(payloadSeqNum, CREATE)
+ if err != nil {
+ xapp.Logger.Error("SubResp: Failed to delete transaction record. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+ return
+}
+
+func (c *Control) handleSubscriptionFailure(params *xapp.RMRParams) {
+ xapp.Logger.Info("SubFail received from Src: %s, Mtype: %v, SubId: %v, Meid: %v", params.Src, params.Mtype, params.SubId, params.Meid)
+ xapp.Rmr.Free(params.Mbuf)
+ params.Mbuf = nil
+
+ payloadSeqNum, err := c.e2ap.GetSubscriptionFailureSequenceNumber(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubFail: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, SubId: %v, Xid: %s, Payload %X", err, params.SubId, params.Xid, params.Payload)
+ return
+ }
+ xapp.Logger.Info("SubFail: Received payloadSeqNum: %v", payloadSeqNum)
+
+ c.timerMap.StopTimer("RIC_SUB_REQ", int(payloadSeqNum))
+
+ transaction, responseReceived, err := c.tracker.CheckResponseReceived(payloadSeqNum, CREATE)
+ if err != nil {
+ xapp.Logger.Info("SubFail: Dropping this msg. Err: %v SubId: %v", err, payloadSeqNum)
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription timer already received
+ return
+ }
+ xapp.Logger.Info("SubFail: SubId: %v, from address: %v:%v. Forwarding response to xApp", payloadSeqNum, transaction.Xappkey.Addr, transaction.Xappkey.Port)
+
+ time.Sleep(3 * time.Second)
+
+ xapp.Logger.Info("SubFail: Starting routing manager update. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ subRouteAction := transaction.SubRouteInfo()
+ err = c.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ if err != nil {
+ xapp.Logger.Error("SubFail: Failed to update routing manager. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+
+ xapp.Logger.Info("SubFail: Deleting transaction record. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ if c.registry.releaseSequenceNumber(payloadSeqNum) {
+ _, err = c.tracker.completeTransaction(payloadSeqNum, CREATE)
+ if err != nil {
+ xapp.Logger.Error("SubFail: Failed to delete transaction record. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+ } else {
+ xapp.Logger.Error("SubFail: Failed to release sequency number. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ return
+ }
+ return
+}
+
+func (c *Control) handleSubscriptionRequestTimer(strId string, nbrId int, tryCount uint64) {
+ subId := uint16(nbrId)
+ xapp.Logger.Info("handleSubTimer: SubReq timer expired. subId: %v, tryCount: %v", subId, tryCount)
+
+ transaction, responseReceived, err := c.tracker.CheckResponseReceived(subId, CREATE)
+ if err != nil {
+ xapp.Logger.Info("handleSubTimer: Dropping this timer action. Err: %v SubId: %v", err, subId)
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription Response or Failure already received
+ return
+ }
+
+ if tryCount < maxSubReqTryCount {
+ xapp.Logger.Info("handleSubTimer: Resending SubReq to E2T: Mtype: %v, SubId: %v, Xid %s, Meid %v", transaction.OrigParams.Mtype, transaction.OrigParams.SubId, transaction.OrigParams.Xid, transaction.OrigParams.Meid)
+ // Set possible to handle new response for the subId
+ err = c.tracker.RetryTransaction(subId, CREATE)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Failed to retry transaction record. Dropping timer action. Err %v, SubId: %v", err, transaction.OrigParams.SubId)
+ return
+ }
+
+ err = c.rmrSend(transaction.OrigParams)
+ if err != nil {
+ xapp.Logger.Error("handleSubTimer: Failed to send request to E2T %v, SubId: %v, Xid: %s", err, transaction.OrigParams.SubId, transaction.OrigParams.Xid)
+ }
+
+ tryCount++
+ c.timerMap.StartTimer("RIC_SUB_REQ", int(subId), subReqTime, tryCount, c.handleSubscriptionRequestTimer)
+ return
+ }
+
+ var subDelReqPayload []byte
+ subDelReqPayload, err = c.e2ap.PackSubscriptionDeleteRequest(transaction.OrigParams.Payload, subId)
+ if err != nil {
+ xapp.Logger.Error("handleSubTimer: Packing SubDelReq failed. Err: %v", err)
+ return
+ }
+
+ // Cancel failed subscription
+ var params xapp.RMRParams
+ params.Mtype = 12020 // RIC SUBSCRIPTION DELETE
+ params.SubId = int(subId)
+ params.Xid = transaction.OrigParams.Xid
+ params.Meid = transaction.OrigParams.Meid
+ params.Src = transaction.OrigParams.Src
+ params.PayloadLen = len(subDelReqPayload)
+ params.Payload = subDelReqPayload
+ params.Mbuf = nil
+
+ // Delete CREATE transaction
+ _, err = c.tracker.completeTransaction(subId, CREATE)
+ if err != nil {
+ xapp.Logger.Error("handleSubTimer: Failed to delete create transaction record. Dropping this timer action. Err: %v, SubId: %v, Xid: %s", err, subId, params.Xid)
+ return
+ }
+
+ // Create DELETE transaction
+ var forwardRespToXapp bool = false
+ _, err = c.trackDeleteTransaction(¶ms, subId, forwardRespToXapp)
+ if err != nil {
+ xapp.Logger.Error("handleSubTimer: Failed to create delete transaction record. Dropping this timer action. Err: %v, SubId: %v, Xid: %s", err, subId, params.Xid)
+ return
+ }
+
+ xapp.Logger.Info("handleSubTimer: Sending SubDelReq to E2T: Mtype: %v, SubId: %v, Meid: %v", params.Mtype, params.SubId, params.Meid)
+ c.rmrSend(¶ms)
+ if err != nil {
+ xapp.Logger.Error("handleSubTimer: Failed to send request to E2T %v. SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+ c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subId), subDelReqTime, FirstTry, c.handleSubscriptionDeleteRequestTimer)
+ return
+}
+
+func (act Action) String() string {
+ actions := [...]string{
+ "CREATE",
+ "MERGE",
+ "NONE",
+ "DELETE",
+ }
+
+ if act < CREATE || act > DELETE {
+ return "Unknown"
+ }
+ return actions[act]
+}
+
+func (act Action) valid() bool {
+ switch act {
+ case CREATE, MERGE, DELETE:
+ return true
+ default:
+ return false
+ }
+}
+
+func (c *Control) handleSubscriptionDeleteRequest(params *xapp.RMRParams) {
+ xapp.Logger.Info("SubDelReq received from Src: %s, Mtype: %v, SubId: %v, Xid: %s, Meid: %v", params.Src, params.Mtype, params.SubId, params.Xid, params.Meid)
+ xapp.Rmr.Free(params.Mbuf)
+ params.Mbuf = nil
+
+ payloadSeqNum, err := c.e2ap.GetSubscriptionDeleteRequestSequenceNumber(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, SubId: %v, Xid: %s, Payload %X", err, params.SubId, params.Xid, params.Payload)
+ return
+ }
+ xapp.Logger.Info("SubDelReq: Received payloadSeqNum: %v", payloadSeqNum)
+
+ if c.registry.IsValidSequenceNumber(payloadSeqNum) {
+ var forwardRespToXapp bool = true
+ _, err = c.trackDeleteTransaction(params, payloadSeqNum, forwardRespToXapp)
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: Failed to create transaction record. Dropping this msg. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+ c.registry.setSubscriptionToUnConfirmed(payloadSeqNum)
+ } else {
+ xapp.Logger.Error("SubDelReq: Not valid sequence number. Dropping this msg. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ return
+ }
+
+ xapp.Logger.Info("SubDelReq: Forwarding Request to E2T. Mtype: %v, SubId: %v, Xid: %s, Meid: %v", params.Mtype, params.SubId, params.Xid, params.Meid)
+ c.rmrSend(params)
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: Failed to send request to E2T. Err %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+ c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(payloadSeqNum), subDelReqTime, FirstTry, c.handleSubscriptionDeleteRequestTimer)
+ return
+}
+
+func (c *Control) trackDeleteTransaction(params *xapp.RMRParams, payloadSeqNum uint16, forwardRespToXapp bool) (transaction *Transaction, err error) {
+ srcAddr, srcPort, err := c.rtmgrClient.SplitSource(params.Src)
+ if err != nil {
+ xapp.Logger.Error("Failed to split source address. Err: %s, SubId: %v, Xid: %s", err, payloadSeqNum, params.Xid)
+ }
+ var respReceived bool = false
+ transaction, err = c.tracker.TrackTransaction(payloadSeqNum, DELETE, *srcAddr, *srcPort, params, respReceived, forwardRespToXapp)
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteResponse(params *xapp.RMRParams) (err error) {
+ xapp.Logger.Info("SubDelResp received from Src: %s, Mtype: %v, SubId: %v, Meid: %v", params.Src, params.Mtype, params.SubId, params.Meid)
+ xapp.Rmr.Free(params.Mbuf)
+ params.Mbuf = nil
+
+ payloadSeqNum, err := c.e2ap.GetSubscriptionDeleteResponseSequenceNumber(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubDelResp: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, SubId: %v, Xid: %s, Payload %X", err, params.SubId, params.Xid, params.Payload)
+ return
+ }
+ xapp.Logger.Info("SubDelResp: Received payloadSeqNum: %v", payloadSeqNum)
+
+ c.timerMap.StopTimer("RIC_SUB_DEL_REQ", int(payloadSeqNum))
+
+ transaction, responseReceived, err := c.tracker.CheckResponseReceived(payloadSeqNum, DELETE)
+ if err != nil {
+ xapp.Logger.Info("SubDelResp: Dropping this msg. Err: %v SubId: %v", err, payloadSeqNum)
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription Delete timer already received
+ return
+ }
+ xapp.Logger.Info("SubDelResp: SubId: %v, from address: %v:%v. Forwarding response to xApp", payloadSeqNum, transaction.Xappkey.Addr, transaction.Xappkey.Port)
+
+ if transaction.ForwardRespToXapp == true {
+ params.SubId = int(payloadSeqNum)
+ params.Xid = transaction.OrigParams.Xid
+ xapp.Logger.Info("Forwarding SubDelResp to xApp: Mtype: %v, SubId: %v, Xid: %v, Meid: %v", params.Mtype, params.SubId, params.Xid, params.Meid)
+ err = c.rmrReplyToSender(params)
+ if err != nil {
+ xapp.Logger.Error("SubDelResp: Failed to send response to xApp. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+
+ time.Sleep(3 * time.Second)
+ }
+
+ xapp.Logger.Info("SubDelResp: Starting routing manager update. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ subRouteAction := SubRouteInfo{DELETE, transaction.Xappkey.Addr, transaction.Xappkey.Port, payloadSeqNum}
+ err = c.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ if err != nil {
+ xapp.Logger.Error("SubDelResp: Failed to update routing manager. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+
+ xapp.Logger.Info("SubDelResp: Deleting transaction record. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ if c.registry.releaseSequenceNumber(payloadSeqNum) {
+ _, err = c.tracker.completeTransaction(payloadSeqNum, DELETE)
+ if err != nil {
+ xapp.Logger.Error("SubDelResp: Failed to delete transaction record. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+ } else {
+ xapp.Logger.Error("SubDelResp: Failed to release sequency number. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ return
+ }
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteFailure(params *xapp.RMRParams) {
+ xapp.Logger.Info("SubDelFail received from Src: %s, Mtype: %v, SubId: %v, Meid: %v", params.Src, params.Mtype, params.SubId, params.Meid)
+ xapp.Rmr.Free(params.Mbuf)
+ params.Mbuf = nil
+
+ payloadSeqNum, err := c.e2ap.GetSubscriptionDeleteFailureSequenceNumber(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubDelFail: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, SubId: %v, Xid: %s, Payload %X", err, params.SubId, params.Xid, params.Payload)
+ return
+ }
+ xapp.Logger.Info("SubDelFail: Received payloadSeqNum: %v", payloadSeqNum)
+
+ c.timerMap.StopTimer("RIC_SUB_DEL_REQ", int(payloadSeqNum))
+
+ transaction, responseReceived, err := c.tracker.CheckResponseReceived(payloadSeqNum, DELETE)
+ if err != nil {
+ xapp.Logger.Info("SubDelFail: Dropping this msg. Err: %v SubId: %v", err, payloadSeqNum)
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription Delete timer already received
+ return
+ }
+ xapp.Logger.Info("SubDelFail: SubId: %v, from address: %v:%v. Forwarding response to xApp", payloadSeqNum, transaction.Xappkey.Addr, transaction.Xappkey.Port)
+
+ if transaction.ForwardRespToXapp == true {
+ var subDelRespPayload []byte
+ subDelRespPayload, err = c.e2ap.PackSubscriptionDeleteResponse(transaction.OrigParams.Payload, payloadSeqNum)
+ if err != nil {
+ xapp.Logger.Error("SubDelFail:Packing SubDelResp failed. Err: %v", err)
+ return
+ }
+
+ params.Mtype = 12021 // RIC SUBSCRIPTION DELETE RESPONSE
+ params.SubId = int(payloadSeqNum)
+ params.Xid = transaction.OrigParams.Xid
+ params.Meid = transaction.OrigParams.Meid
+ params.Src = transaction.OrigParams.Src
+ params.PayloadLen = len(subDelRespPayload)
+ params.Payload = subDelRespPayload
+ params.Mbuf = nil
+ xapp.Logger.Info("SubDelFail: Forwarding SubDelFail to xApp: Mtype: %v, SubId: %v, Xid: %v, Meid: %v", params.Mtype, params.SubId, params.Xid, params.Meid)
+ err = c.rmrReplyToSender(params)
+ if err != nil {
+ xapp.Logger.Error("SubDelFail: Failed to send SubDelFail to xApp. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+
+ time.Sleep(3 * time.Second)
+ }
+
+ xapp.Logger.Info("SubDelFail: Starting routing manager update. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ subRouteAction := SubRouteInfo{DELETE, transaction.Xappkey.Addr, transaction.Xappkey.Port, payloadSeqNum}
+ err = c.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ if err != nil {
+ xapp.Logger.Error("SubDelFail: Failed to update routing manager. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+
+ xapp.Logger.Info("SubDelFail: Deleting transaction record. SubId: %v, Xid: %s", params.SubId, params.Xid)
+ if c.registry.releaseSequenceNumber(payloadSeqNum) {
+ _, err = c.tracker.completeTransaction(payloadSeqNum, DELETE)
+ if err != nil {
+ xapp.Logger.Error("SubDelFail: Failed to delete transaction record. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+ } else {
+ xapp.Logger.Error("SubDelFail: Failed to release sequency number. Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ return
+ }
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteRequestTimer(strId string, nbrId int, tryCount uint64) {
+ subId := uint16(nbrId)
+ xapp.Logger.Info("handleSubDelTimer: SubDelReq timer expired. subId: %v, tryCount: %v", subId, tryCount)
+
+ transaction, responseReceived, err := c.tracker.CheckResponseReceived(subId, DELETE)
+ if err != nil {
+ xapp.Logger.Info("handleSubTimer: Dropping this timer action. Err: %v SubId: %v", err, subId)
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription Delete Response or Failure already received
+ return
+ }
+
+ if tryCount < maxSubDelReqTryCount {
+ xapp.Logger.Info("handleSubDelTimer: Resending SubDelReq to E2T: Mtype: %v, SubId: %v, Xid %s, Meid %v", transaction.OrigParams.Mtype, transaction.OrigParams.SubId, transaction.OrigParams.Xid, transaction.OrigParams.Meid)
+ // Set possible to handle new response for the subId
+ err = c.tracker.RetryTransaction(subId, DELETE)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Failed to retry transaction record. Dropping timer action. Err %v, SubId: %v", err, transaction.OrigParams.SubId)
+ return
+ }
+
+ err = c.rmrSend(transaction.OrigParams)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Failed to send request to E2T %v, SubId: %v, Xid: %s", err, transaction.OrigParams.SubId, transaction.OrigParams.Xid)
+ }
+
+ tryCount++
+ c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subId), subReqTime, tryCount, c.handleSubscriptionDeleteRequestTimer)
+ return
+ }
+
+ var params xapp.RMRParams
+ if transaction.ForwardRespToXapp == true {
+ var subDelRespPayload []byte
+ subDelRespPayload, err = c.e2ap.PackSubscriptionDeleteResponse(transaction.OrigParams.Payload, subId)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Unable to pack payload. Dropping this timer action. Err: %v, SubId: %v, Xid: %s, Payload %x", err, subId, transaction.OrigParams.Xid, transaction.OrigParams.Payload)
+ return
+ }
+
+ params.Mtype = 12021 // RIC SUBSCRIPTION DELETE RESPONSE
+ params.SubId = int(subId)
+ params.Meid = transaction.OrigParams.Meid
+ params.Xid = transaction.OrigParams.Xid
+ params.Src = transaction.OrigParams.Src
+ params.PayloadLen = len(subDelRespPayload)
+ params.Payload = subDelRespPayload
+ params.Mbuf = nil
+
+ xapp.Logger.Info("handleSubDelTimer: Sending SubDelResp to xApp: Mtype: %v, SubId: %v, Xid: %s, Meid: %v", params.Mtype, params.SubId, params.Xid, params.Meid)
+ err = c.rmrReplyToSender(¶ms)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Failed to send response to xApp: Err: %v, SubId: %v, Xid: %s", err, params.SubId, params.Xid)
+ }
+
+ time.Sleep(3 * time.Second)
+ }
+
+ xapp.Logger.Info("handleSubDelTimer: Starting routing manager update. SubId: %v, Xid: %s", subId, params.Xid)
+ subRouteAction := SubRouteInfo{DELETE, transaction.Xappkey.Addr, transaction.Xappkey.Port, subId}
+ err = c.rtmgrClient.SubscriptionRequestUpdate(subRouteAction)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Failed to update routing manager. Err: %v, SubId: %v, Xid: %s", err, subId, params.Xid)
+ return
+ }
+
+ xapp.Logger.Info("handleSubDelTimer: Deleting transaction record. SubId: %v, Xid: %s", subId, params.Xid)
+ if c.registry.releaseSequenceNumber(subId) {
+ _, err = c.tracker.completeTransaction(subId, DELETE)
+ if err != nil {
+ xapp.Logger.Error("handleSubDelTimer: Failed to delete transaction record. Err: %v, SubId: %v, Xid: %s", err, subId, params.Xid)
+ return
+ }
+ } else {
+ xapp.Logger.Error("handleSubDelTimer: Failed to release sequency number. SubId: %v, Xid: %s", subId, params.Xid)
+ }
+ return
+}