+ xapp.SetReadyCB(c.ReadyCB, nil)
+ xapp.Run(c)
+}
+
+func (c *Control) rmrSendToE2T(desc string, subs *Subscription, trans *TransactionSubs) (err error) {
+ params := xapptweaks.NewParams(nil)
+ params.Mtype = trans.GetMtype()
+ params.SubId = int(subs.GetReqId().Seq)
+ params.Xid = ""
+ params.Meid = subs.GetMeid()
+ params.Src = ""
+ params.PayloadLen = len(trans.Payload.Buf)
+ params.Payload = trans.Payload.Buf
+ params.Mbuf = nil
+ xapp.Logger.Info("MSG to E2T: %s %s %s", desc, trans.String(), params.String())
+ return c.RmrSend(params)
+}
+
+func (c *Control) rmrSendToXapp(desc string, subs *Subscription, trans *TransactionXapp) (err error) {
+
+ params := xapptweaks.NewParams(nil)
+ params.Mtype = trans.GetMtype()
+ params.SubId = int(subs.GetReqId().Seq)
+ params.Xid = trans.GetXid()
+ params.Meid = trans.GetMeid()
+ params.Src = ""
+ params.PayloadLen = len(trans.Payload.Buf)
+ params.Payload = trans.Payload.Buf
+ params.Mbuf = nil
+ xapp.Logger.Info("MSG to XAPP: %s %s %s", desc, trans.String(), params.String())
+ return c.RmrSend(params)
+}
+
+func (c *Control) Consume(params *xapp.RMRParams) (err error) {
+ msg := xapptweaks.NewParams(params)
+ if c.Rmr == nil {
+ err = fmt.Errorf("Rmr object nil can handle %s", msg.String())
+ xapp.Logger.Error("%s", err.Error())
+ return
+ }
+ c.CntRecvMsg++
+
+ defer c.Rmr.Free(msg.Mbuf)
+
+ switch msg.Mtype {
+ case xapp.RICMessageTypes["RIC_SUB_REQ"]:
+ go c.handleXAPPSubscriptionRequest(msg)
+ case xapp.RICMessageTypes["RIC_SUB_RESP"]:
+ go c.handleE2TSubscriptionResponse(msg)
+ case xapp.RICMessageTypes["RIC_SUB_FAILURE"]:
+ go c.handleE2TSubscriptionFailure(msg)
+ case xapp.RICMessageTypes["RIC_SUB_DEL_REQ"]:
+ go c.handleXAPPSubscriptionDeleteRequest(msg)
+ case xapp.RICMessageTypes["RIC_SUB_DEL_RESP"]:
+ go c.handleE2TSubscriptionDeleteResponse(msg)
+ case xapp.RICMessageTypes["RIC_SUB_DEL_FAILURE"]:
+ go c.handleE2TSubscriptionDeleteFailure(msg)
+ default:
+ xapp.Logger.Info("Unknown Message Type '%d', discarding", msg.Mtype)
+ }
+ return
+}
+
+//-------------------------------------------------------------------
+// handle from XAPP Subscription Request
+//------------------------------------------------------------------
+func (c *Control) handleXAPPSubscriptionRequest(params *xapptweaks.RMRParams) {
+ xapp.Logger.Info("MSG from XAPP: %s", params.String())
+
+ subReqMsg, err := c.e2ap.UnpackSubscriptionRequest(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("XAPP-SubReq: %s", idstring(err, params))
+ return
+ }
+
+ trans := c.tracker.NewXappTransaction(NewRmrEndpoint(params.Src), params.Xid, subReqMsg.RequestId.Seq, params.Meid)
+ if trans == nil {
+ xapp.Logger.Error("XAPP-SubReq: %s", idstring(fmt.Errorf("transaction not created"), params))
+ return
+ }
+ defer trans.Release()
+
+ err = c.tracker.Track(trans)
+ if err != nil {
+ xapp.Logger.Error("XAPP-SubReq: %s", idstring(err, trans))
+ return
+ }
+
+ subs, err := c.registry.AssignToSubscription(trans, subReqMsg)
+ if err != nil {
+ xapp.Logger.Error("XAPP-SubReq: %s", idstring(err, trans))
+ return
+ }
+
+ //
+ // Wake subs request
+ //
+ go c.handleSubscriptionCreate(subs, trans)
+ event, _ := trans.WaitEvent(0) //blocked wait as timeout is handled in subs side
+
+ err = nil
+ if event != nil {
+ switch themsg := event.(type) {
+ case *e2ap.E2APSubscriptionResponse:
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionResponse(themsg)
+ if err == nil {
+ trans.Release()
+ c.rmrSendToXapp("", subs, trans)
+ return
+ }
+ case *e2ap.E2APSubscriptionFailure:
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionFailure(themsg)
+ if err == nil {
+ c.rmrSendToXapp("", subs, trans)
+ }
+ default:
+ break
+ }
+ }
+ xapp.Logger.Info("XAPP-SubReq: failed %s", idstring(err, trans, subs))
+ c.registry.RemoveFromSubscription(subs, trans, 5*time.Second)
+}
+
+//-------------------------------------------------------------------
+// handle from XAPP Subscription Delete Request
+//------------------------------------------------------------------
+func (c *Control) handleXAPPSubscriptionDeleteRequest(params *xapptweaks.RMRParams) {
+ xapp.Logger.Info("MSG from XAPP: %s", params.String())
+
+ subDelReqMsg, err := c.e2ap.UnpackSubscriptionDeleteRequest(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("XAPP-SubDelReq %s", idstring(err, params))
+ return
+ }
+
+ trans := c.tracker.NewXappTransaction(NewRmrEndpoint(params.Src), params.Xid, subDelReqMsg.RequestId.Seq, params.Meid)
+ if trans == nil {
+ xapp.Logger.Error("XAPP-SubDelReq: %s", idstring(fmt.Errorf("transaction not created"), params))
+ return
+ }
+ defer trans.Release()
+
+ err = c.tracker.Track(trans)
+ if err != nil {
+ xapp.Logger.Error("XAPP-SubReq: %s", idstring(err, trans))
+ return
+ }
+
+ subs, err := c.registry.GetSubscriptionFirstMatch([]uint32{trans.GetSubId()})
+ if err != nil {
+ xapp.Logger.Error("XAPP-SubDelReq: %s", idstring(err, trans))
+ return
+ }
+
+ //
+ // Wake subs delete
+ //
+ go c.handleSubscriptionDelete(subs, trans)
+ trans.WaitEvent(0) //blocked wait as timeout is handled in subs side
+
+ xapp.Logger.Debug("XAPP-SubDelReq: Handling event %s ", idstring(nil, trans, subs))
+
+ // Whatever is received send ok delete response
+ subDelRespMsg := &e2ap.E2APSubscriptionDeleteResponse{}
+ subDelRespMsg.RequestId = subs.GetReqId().RequestId
+ subDelRespMsg.FunctionId = subs.SubReqMsg.FunctionId
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionDeleteResponse(subDelRespMsg)
+ if err == nil {
+ c.rmrSendToXapp("", subs, trans)
+ }
+
+ c.registry.RemoveFromSubscription(subs, trans, 5*time.Second)
+}
+
+//-------------------------------------------------------------------
+// SUBS CREATE Handling
+//-------------------------------------------------------------------
+func (c *Control) handleSubscriptionCreate(subs *Subscription, parentTrans *TransactionXapp) {
+
+ trans := c.tracker.NewSubsTransaction(subs)
+ subs.WaitTransactionTurn(trans)
+ defer subs.ReleaseTransactionTurn(trans)
+ defer trans.Release()
+
+ xapp.Logger.Debug("SUBS-SubReq: Handling %s ", idstring(nil, trans, subs, parentTrans))
+
+ subRfMsg, valid := subs.GetCachedResponse()
+ if subRfMsg == nil && valid == true {
+ event := c.sendE2TSubscriptionRequest(subs, trans, parentTrans)
+ switch event.(type) {
+ case *e2ap.E2APSubscriptionResponse:
+ subRfMsg, valid = subs.SetCachedResponse(event, true)
+ case *e2ap.E2APSubscriptionFailure:
+ subRfMsg, valid = subs.SetCachedResponse(event, false)
+ default:
+ xapp.Logger.Info("SUBS-SubReq: internal delete due event(%s) %s", typeofSubsMessage(event), idstring(nil, trans, subs, parentTrans))
+ subRfMsg, valid = subs.SetCachedResponse(nil, false)
+ c.sendE2TSubscriptionDeleteRequest(subs, trans, parentTrans)
+ }
+ xapp.Logger.Debug("SUBS-SubReq: Handling (e2t response %s) %s", typeofSubsMessage(subRfMsg), idstring(nil, trans, subs, parentTrans))
+ } else {
+ xapp.Logger.Debug("SUBS-SubReq: Handling (cached response %s) %s", typeofSubsMessage(subRfMsg), idstring(nil, trans, subs, parentTrans))
+ }
+
+ parentTrans.SendEvent(subRfMsg, 0)
+}
+
+//-------------------------------------------------------------------
+// SUBS DELETE Handling
+//-------------------------------------------------------------------
+
+func (c *Control) handleSubscriptionDelete(subs *Subscription, parentTrans *TransactionXapp) {
+
+ trans := c.tracker.NewSubsTransaction(subs)
+ subs.WaitTransactionTurn(trans)
+ defer subs.ReleaseTransactionTurn(trans)
+ defer trans.Release()
+
+ xapp.Logger.Debug("SUBS-SubDelReq: Handling %s", idstring(nil, trans, subs, parentTrans))
+
+ subs.mutex.Lock()
+ if subs.valid && subs.EpList.HasEndpoint(parentTrans.GetEndpoint()) && subs.EpList.Size() == 1 {
+ subs.valid = false
+ subs.mutex.Unlock()
+ c.sendE2TSubscriptionDeleteRequest(subs, trans, parentTrans)
+ } else {
+ subs.mutex.Unlock()
+ }
+
+ parentTrans.SendEvent(nil, 0)
+}
+
+//-------------------------------------------------------------------
+// send to E2T Subscription Request
+//-------------------------------------------------------------------
+func (c *Control) sendE2TSubscriptionRequest(subs *Subscription, trans *TransactionSubs, parentTrans *TransactionXapp) interface{} {
+ var err error
+ var event interface{} = nil
+ var timedOut bool = false
+
+ subReqMsg := subs.SubReqMsg
+ subReqMsg.RequestId = subs.GetReqId().RequestId
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionRequest(subReqMsg)
+ if err != nil {
+ xapp.Logger.Error("SUBS-SubReq: %s", idstring(err, trans, subs, parentTrans))
+ return event
+ }
+
+ for retries := uint64(0); retries < e2tMaxSubReqTryCount; retries++ {
+ desc := fmt.Sprintf("(retry %d)", retries)
+ c.rmrSendToE2T(desc, subs, trans)
+ event, timedOut = trans.WaitEvent(e2tSubReqTimeout)
+ if timedOut {
+ continue
+ }
+ break
+ }
+ xapp.Logger.Debug("SUBS-SubReq: Response handling event(%s) %s", typeofSubsMessage(event), idstring(nil, trans, subs, parentTrans))
+ return event
+}
+
+//-------------------------------------------------------------------
+// send to E2T Subscription Delete Request
+//-------------------------------------------------------------------
+
+func (c *Control) sendE2TSubscriptionDeleteRequest(subs *Subscription, trans *TransactionSubs, parentTrans *TransactionXapp) interface{} {
+ var err error
+ var event interface{}
+ var timedOut bool
+
+ subDelReqMsg := &e2ap.E2APSubscriptionDeleteRequest{}
+ subDelReqMsg.RequestId = subs.GetReqId().RequestId
+ subDelReqMsg.FunctionId = subs.SubReqMsg.FunctionId
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionDeleteRequest(subDelReqMsg)
+ if err != nil {
+ xapp.Logger.Error("SUBS-SubDelReq: %s", idstring(err, trans, subs, parentTrans))
+ return event
+ }
+
+ for retries := uint64(0); retries < e2tMaxSubDelReqTryCount; retries++ {
+ desc := fmt.Sprintf("(retry %d)", retries)
+ c.rmrSendToE2T(desc, subs, trans)
+ event, timedOut = trans.WaitEvent(e2tSubDelReqTime)
+ if timedOut {
+ continue
+ }
+ break
+ }
+ xapp.Logger.Debug("SUBS-SubDelReq: Response handling event(%s) %s", typeofSubsMessage(event), idstring(nil, trans, subs, parentTrans))
+ return event
+}
+
+//-------------------------------------------------------------------
+// handle from E2T Subscription Reponse
+//-------------------------------------------------------------------
+func (c *Control) handleE2TSubscriptionResponse(params *xapptweaks.RMRParams) {
+ xapp.Logger.Info("MSG from E2T: %s", params.String())
+ subRespMsg, err := c.e2ap.UnpackSubscriptionResponse(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("MSG-SubResp %s", idstring(err, params))
+ return
+ }
+ subs, err := c.registry.GetSubscriptionFirstMatch([]uint32{subRespMsg.RequestId.Seq})
+ if err != nil {
+ xapp.Logger.Error("MSG-SubResp: %s", idstring(err, params))
+ return
+ }
+ trans := subs.GetTransaction()
+ if trans == nil {
+ err = fmt.Errorf("Ongoing transaction not found")
+ xapp.Logger.Error("MSG-SubResp: %s", idstring(err, params, subs))
+ return
+ }
+ sendOk, timedOut := trans.SendEvent(subRespMsg, e2tRecvMsgTimeout)
+ if sendOk == false {
+ err = fmt.Errorf("Passing event to transaction failed: sendOk(%t) timedOut(%t)", sendOk, timedOut)
+ xapp.Logger.Error("MSG-SubResp: %s", idstring(err, trans, subs))
+ }
+ return
+}
+
+//-------------------------------------------------------------------
+// handle from E2T Subscription Failure
+//-------------------------------------------------------------------
+func (c *Control) handleE2TSubscriptionFailure(params *xapptweaks.RMRParams) {
+ xapp.Logger.Info("MSG from E2T: %s", params.String())
+ subFailMsg, err := c.e2ap.UnpackSubscriptionFailure(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("MSG-SubFail %s", idstring(err, params))
+ return
+ }
+ subs, err := c.registry.GetSubscriptionFirstMatch([]uint32{subFailMsg.RequestId.Seq})
+ if err != nil {
+ xapp.Logger.Error("MSG-SubFail: %s", idstring(err, params))
+ return
+ }
+ trans := subs.GetTransaction()
+ if trans == nil {
+ err = fmt.Errorf("Ongoing transaction not found")
+ xapp.Logger.Error("MSG-SubFail: %s", idstring(err, params, subs))
+ return
+ }
+ sendOk, timedOut := trans.SendEvent(subFailMsg, e2tRecvMsgTimeout)
+ if sendOk == false {
+ err = fmt.Errorf("Passing event to transaction failed: sendOk(%t) timedOut(%t)", sendOk, timedOut)
+ xapp.Logger.Error("MSG-SubFail: %s", idstring(err, trans, subs))
+ }
+ return
+}
+
+//-------------------------------------------------------------------
+// handle from E2T Subscription Delete Response
+//-------------------------------------------------------------------
+func (c *Control) handleE2TSubscriptionDeleteResponse(params *xapptweaks.RMRParams) (err error) {
+ xapp.Logger.Info("MSG from E2T: %s", params.String())
+ subDelRespMsg, err := c.e2ap.UnpackSubscriptionDeleteResponse(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("MSG-SubDelResp: %s", idstring(err, params))
+ return
+ }
+ subs, err := c.registry.GetSubscriptionFirstMatch([]uint32{subDelRespMsg.RequestId.Seq})
+ if err != nil {
+ xapp.Logger.Error("MSG-SubDelResp: %s", idstring(err, params))
+ return
+ }
+ trans := subs.GetTransaction()
+ if trans == nil {
+ err = fmt.Errorf("Ongoing transaction not found")
+ xapp.Logger.Error("MSG-SubDelResp: %s", idstring(err, params, subs))
+ return
+ }
+ sendOk, timedOut := trans.SendEvent(subDelRespMsg, e2tRecvMsgTimeout)
+ if sendOk == false {
+ err = fmt.Errorf("Passing event to transaction failed: sendOk(%t) timedOut(%t)", sendOk, timedOut)
+ xapp.Logger.Error("MSG-SubDelResp: %s", idstring(err, trans, subs))
+ }
+ return
+}
+
+//-------------------------------------------------------------------
+// handle from E2T Subscription Delete Failure
+//-------------------------------------------------------------------
+func (c *Control) handleE2TSubscriptionDeleteFailure(params *xapptweaks.RMRParams) {
+ xapp.Logger.Info("MSG from E2T: %s", params.String())
+ subDelFailMsg, err := c.e2ap.UnpackSubscriptionDeleteFailure(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("MSG-SubDelFail: %s", idstring(err, params))
+ return
+ }
+ subs, err := c.registry.GetSubscriptionFirstMatch([]uint32{subDelFailMsg.RequestId.Seq})
+ if err != nil {
+ xapp.Logger.Error("MSG-SubDelFail: %s", idstring(err, params))
+ return
+ }
+ trans := subs.GetTransaction()
+ if trans == nil {
+ err = fmt.Errorf("Ongoing transaction not found")
+ xapp.Logger.Error("MSG-SubDelFail: %s", idstring(err, params, subs))
+ return
+ }
+ sendOk, timedOut := trans.SendEvent(subDelFailMsg, e2tRecvMsgTimeout)
+ if sendOk == false {
+ err = fmt.Errorf("Passing event to transaction failed: sendOk(%t) timedOut(%t)", sendOk, timedOut)
+ xapp.Logger.Error("MSG-SubDelFail: %s", idstring(err, trans, subs))
+ }
+ return
+}
+
+//-------------------------------------------------------------------
+//
+//-------------------------------------------------------------------
+func typeofSubsMessage(v interface{}) string {
+ if v == nil {
+ return "NIL"
+ }
+ switch v.(type) {
+ case *e2ap.E2APSubscriptionRequest:
+ return "SubReq"
+ case *e2ap.E2APSubscriptionResponse:
+ return "SubResp"
+ case *e2ap.E2APSubscriptionFailure:
+ return "SubFail"
+ case *e2ap.E2APSubscriptionDeleteRequest:
+ return "SubDelReq"
+ case *e2ap.E2APSubscriptionDeleteResponse:
+ return "SubDelResp"
+ case *e2ap.E2APSubscriptionDeleteFailure:
+ return "SubDelFail"
+ default:
+ return "Unknown"
+ }
+}