X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=pkg%2Fcontrol%2Fcontrol.go;h=c2b33b765ca87737f2d19ec7a756454c2c4333ad;hb=af91f971681842c22dc0fad165c0cbf7ebaa0e4d;hp=291075d81751fed487efd541a5bc787439c19715;hpb=cd3881b5ff11027ff543047306724d73b48ba0eb;p=ric-plt%2Fsubmgr.git diff --git a/pkg/control/control.go b/pkg/control/control.go old mode 100644 new mode 100755 index 291075d..c2b33b7 --- a/pkg/control/control.go +++ b/pkg/control/control.go @@ -19,266 +19,538 @@ package control -/* -#include -#include - -#cgo CFLAGS: -I../ -#cgo LDFLAGS: -lrmr_nng -lnng -*/ -import "C" - import ( - "errors" + "fmt" + "gerrit.o-ran-sc.org/r/ric-plt/e2ap/pkg/e2ap" + rtmgrclient "gerrit.o-ran-sc.org/r/ric-plt/submgr/pkg/rtmgr_client" "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp" - "github.com/spf13/viper" - "github.com/go-openapi/strfmt" httptransport "github.com/go-openapi/runtime/client" - rtmgrclient "gerrit.o-ran-sc.org/r/ric-plt/submgr/pkg/rtmgr_client" - rtmgrhandle "gerrit.o-ran-sc.org/r/ric-plt/submgr/pkg/rtmgr_client/handle" - "math/rand" - "strconv" + "github.com/go-openapi/strfmt" + "github.com/spf13/viper" + "sync" "time" ) +//----------------------------------------------------------------------------- +// +//----------------------------------------------------------------------------- + +var e2tSubReqTimeout time.Duration = 5 * time.Second +var e2tSubDelReqTime time.Duration = 5 * time.Second +var e2tMaxSubReqTryCount uint64 = 2 // Initial try + retry +var e2tMaxSubDelReqTryCount uint64 = 2 // Initial try + retry + +var e2tRecvMsgTimeout time.Duration = 5 * time.Second + type Control struct { - e2ap *E2ap - registry *Registry - rtmgrClient *RtmgrClient - tracker *Tracker - rc_chan chan *xapp.RMRParams + e2ap *E2ap + registry *Registry + tracker *Tracker + timerMap *TimerMap + rmrSendMutex sync.Mutex + msgCounter uint64 } type RMRMeid struct { - PlmnID string - EnbID string + PlmnID string + EnbID string + RanName string } -var SEEDSN uint16 -var SubscriptionReqChan = make(chan subRouteInfo, 10) - const ( CREATE Action = 0 - MERGE Action = 1 + UPDATE Action = 1 + NONE Action = 2 DELETE Action = 3 ) func init() { + xapp.Logger.Info("SUBMGR") viper.AutomaticEnv() viper.SetEnvPrefix("submgr") viper.AllowEmptyEnv(true) - SEEDSN = uint16(viper.GetInt("seed_sn")) - if SEEDSN == 0 { - rand.Seed(time.Now().UnixNano()) - SEEDSN = uint16(rand.Intn(65535)) - } - if SEEDSN > 65535 { - SEEDSN = 0 - } - xapp.Logger.Info("SUBMGR: Initial Sequence Number: %v", SEEDSN) } -func NewControl() Control { +func NewControl() *Control { + + transport := httptransport.New(viper.GetString("rtmgr.HostAddr")+":"+viper.GetString("rtmgr.port"), viper.GetString("rtmgr.baseUrl"), []string{"http"}) + rtmgrClient := RtmgrClient{rtClient: rtmgrclient.New(transport, strfmt.Default)} + registry := new(Registry) - registry.Initialize(SEEDSN) + registry.Initialize() + registry.rtmgrClient = &rtmgrClient tracker := new(Tracker) tracker.Init() - transport := httptransport.New(viper.GetString("rtmgr.HostAddr") + ":" + viper.GetString("rtmgr.port"), viper.GetString("rtmgr.baseUrl"), []string{"http"}) - client := rtmgrclient.New(transport, strfmt.Default) - handle := rtmgrhandle.NewProvideXappSubscriptionHandleParamsWithTimeout(10 * time.Second) - delete_handle := rtmgrhandle.NewDeleteXappSubscriptionHandleParamsWithTimeout(10 * time.Second) - rtmgrClient := RtmgrClient{client, handle, delete_handle} + timerMap := new(TimerMap) + timerMap.Init() - return Control{new(E2ap), registry, &rtmgrClient, tracker, make(chan *xapp.RMRParams)} + return &Control{e2ap: new(E2ap), + registry: registry, + tracker: tracker, + timerMap: timerMap, + msgCounter: 0, + } } func (c *Control) Run() { - go c.controlLoop() xapp.Run(c) } -func (c *Control) Consume(rp *xapp.RMRParams) (err error) { - c.rc_chan <- rp +func (c *Control) rmrSendRaw(desc string, params *RMRParams) (err error) { + + xapp.Logger.Info("%s: %s", desc, params.String()) + status := false + i := 1 + for ; i <= 10 && status == false; i++ { + c.rmrSendMutex.Lock() + status = xapp.Rmr.Send(params.RMRParams, false) + c.rmrSendMutex.Unlock() + if status == false { + xapp.Logger.Info("rmr.Send() failed. Retry count %d, %s", i, params.String()) + time.Sleep(500 * time.Millisecond) + } + } + if status == false { + err = fmt.Errorf("rmr.Send() failed. Retry count %d, %s", i, params.String()) + xapp.Logger.Error("%s: %s", desc, err.Error()) + xapp.Rmr.Free(params.Mbuf) + } return } -func (c *Control) rmrSend(params *xapp.RMRParams) (err error) { - if !xapp.Rmr.Send(params, false) { - err = errors.New("rmr.Send() failed") - } - return +func (c *Control) rmrSend(desc string, subs *Subscription, trans *Transaction) (err error) { + params := &RMRParams{&xapp.RMRParams{}} + params.Mtype = trans.GetMtype() + params.SubId = int(subs.GetSubId()) + params.Xid = "" + params.Meid = subs.GetMeid() + params.Src = "" + params.PayloadLen = len(trans.Payload.Buf) + params.Payload = trans.Payload.Buf + params.Mbuf = nil + + return c.rmrSendRaw(desc, params) +} + +func (c *Control) rmrReplyToSender(desc string, subs *Subscription, trans *Transaction) (err error) { + params := &RMRParams{&xapp.RMRParams{}} + params.Mtype = trans.GetMtype() + params.SubId = int(subs.GetSubId()) + params.Xid = trans.GetXid() + params.Meid = trans.GetMeid() + params.Src = "" + params.PayloadLen = len(trans.Payload.Buf) + params.Payload = trans.Payload.Buf + params.Mbuf = nil + + return c.rmrSendRaw(desc, params) } -func (c *Control) rmrReplyToSender(params *xapp.RMRParams) (err error) { - if !xapp.Rmr.Send(params, true) { - err = errors.New("rmr.Send() failed") +func (c *Control) Consume(params *xapp.RMRParams) (err error) { + xapp.Rmr.Free(params.Mbuf) + params.Mbuf = nil + msg := &RMRParams{params} + c.msgCounter++ + 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 + + return nil } +func idstring(trans fmt.Stringer, subs fmt.Stringer, err error) string { + var retval string = "" + var filler string = "" + if trans != nil { + retval += filler + trans.String() + filler = " " + } + if subs != nil { + retval += filler + subs.String() + filler = " " + } + if err != nil { + retval += filler + "err(" + err.Error() + ")" + filler = " " -func (c *Control) controlLoop() { - for { - msg := <-c.rc_chan - switch msg.Mtype { - case C.RIC_SUB_REQ: - c.handleSubscriptionRequest(msg) - case C.RIC_SUB_RESP: - c.handleSubscriptionResponse(msg) - case C.RIC_SUB_DEL_REQ: - c.handleSubscriptionDeleteRequest(msg) - case C.RIC_SUB_DEL_RESP: - c.handleSubscriptionDeleteResponse(msg) - default: - err := errors.New("Message Type " + strconv.Itoa(msg.Mtype) + " is discarded") - xapp.Logger.Error("Unknown message type: %v", err) - } } + return retval } -func (c *Control) handleSubscriptionRequest(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionRequestSequenceNumber(params.Payload) +//------------------------------------------------------------------- +// handle from XAPP Subscription Request +//------------------------------------------------------------------ +func (c *Control) handleXAPPSubscriptionRequest(params *RMRParams) { + xapp.Logger.Info("XAPP-SubReq from xapp: %s", params.String()) + + subReqMsg, err := c.e2ap.UnpackSubscriptionRequest(params.Payload) if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) + xapp.Logger.Error("XAPP-SubReq: %s", idstring(params, nil, err)) return } - xapp.Logger.Info("Subscription Request Received. RMR SUBSCRIPTION_ID: %v | PAYLOAD SEQUENCE_NUMBER: %v", params.SubId, payload_seq_num) - /* Reserve a sequence number and set it in the payload */ - new_sub_id := c.registry.ReserveSequenceNumber() + trans, err := c.tracker.TrackTransaction(NewRmrEndpoint(params.Src), params.Xid, params.Meid) + if err != nil { + xapp.Logger.Error("XAPP-SubReq: %s", idstring(params, nil, err)) + return + } + defer trans.Release() - _, err = c.e2ap.SetSubscriptionRequestSequenceNumber(params.Payload, new_sub_id) + subs, err := c.registry.AssignToSubscription(trans, subReqMsg) if err != nil { - err = errors.New("Unable to set Subscription Sequence Number in Payload due to: " + err.Error()) + xapp.Logger.Error("XAPP-SubReq: %s", idstring(trans, nil, err)) return } - src_addr, src_port, err := c.rtmgrClient.SplitSource(params.Src) + if subs.IsTransactionReserved() { + err := fmt.Errorf("Currently parallel or queued transactions are not allowed") + xapp.Logger.Error("XAPP-SubReq: %s", idstring(trans, subs, err)) + 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 { + c.rmrReplyToSender("XAPP-SubReq: SubResp to xapp", subs, trans) + return + } + case *e2ap.E2APSubscriptionFailure: + trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionFailure(themsg) + if err == nil { + c.rmrReplyToSender("XAPP-SubReq: SubFail to xapp", subs, trans) + } + return + default: + break + } + } + xapp.Logger.Info("XAPP-SubReq: failed %s", idstring(trans, subs, err)) +} + +//------------------------------------------------------------------- +// handle from XAPP Subscription Delete Request +//------------------------------------------------------------------ +func (c *Control) handleXAPPSubscriptionDeleteRequest(params *RMRParams) { + xapp.Logger.Info("XAPP-SubDelReq from xapp: %s", params.String()) + + subDelReqMsg, err := c.e2ap.UnpackSubscriptionDeleteRequest(params.Payload) if err != nil { - xapp.Logger.Error("Failed to update routing-manager about the subscription request with reason: %s", err) + xapp.Logger.Error("XAPP-SubDelReq %s", idstring(params, nil, err)) return } - /* Create transatcion records for every subscription request */ - xact_key := Transaction_key{new_sub_id, CREATE} - xact_value := Transaction{*src_addr, *src_port, params.Payload, params.Mbuf} - err = c.tracker.Track_transaction(xact_key, xact_value) + trans, err := c.tracker.TrackTransaction(NewRmrEndpoint(params.Src), params.Xid, params.Meid) if err != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) + xapp.Logger.Error("XAPP-SubDelReq %s", idstring(params, nil, err)) return } + defer trans.Release() - /* Update routing manager about the new subscription*/ - sub_route_action := subRouteInfo{CREATE, *src_addr, *src_port, new_sub_id } - go c.rtmgrClient.SubscriptionRequestUpdate() - SubscriptionReqChan <- sub_route_action + subs, err := c.registry.GetSubscriptionFirstMatch([]uint16{uint16(subDelReqMsg.RequestId.Seq), uint16(params.SubId)}) + if err != nil { + xapp.Logger.Error("XAPP-SubDelReq: %s", idstring(trans, nil, err)) + return + } - // Setting new subscription ID in the RMR header - params.SubId = int(new_sub_id) + if subs.IsTransactionReserved() { + err := fmt.Errorf("Currently parallel or queued transactions are not allowed") + xapp.Logger.Error("XAPP-SubDelReq: %s", idstring(trans, subs, err)) + return + } - xapp.Logger.Info("Generated ID: %v. Forwarding to E2 Termination...", int(new_sub_id)) - c.rmrSend(params) - xapp.Logger.Info("--- Debugging transaction table = %v", c.tracker.transaction_table) - return + // + // Wake subs delete + // + go c.handleSubscriptionDelete(subs, trans) + trans.WaitEvent(0) //blocked wait as timeout is handled in subs side + + // Whatever is received send ok delete response + subDelRespMsg := &e2ap.E2APSubscriptionDeleteResponse{} + subDelRespMsg.RequestId.Id = subs.SubReqMsg.RequestId.Id + subDelRespMsg.RequestId.Seq = uint32(subs.GetSubId()) + subDelRespMsg.FunctionId = subs.SubReqMsg.FunctionId + trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionDeleteResponse(subDelRespMsg) + if err == nil { + c.rmrReplyToSender("XAPP-SubDelReq: SubDelResp to xapp", subs, trans) + } } -func (c *Control) handleSubscriptionResponse(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionResponseSequenceNumber(params.Payload) - if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) +//------------------------------------------------------------------- +// SUBS CREATE Handling +//------------------------------------------------------------------- +func (c *Control) handleSubscriptionCreate(subs *Subscription, parentTrans *Transaction) { + + trans := c.tracker.NewTransaction(subs.GetMeid()) + subs.WaitTransactionTurn(trans) + defer subs.ReleaseTransactionTurn(trans) + defer trans.Release() + + xapp.Logger.Debug("SUBS-SubReq: Handling %s parent %s", idstring(trans, subs, nil), parentTrans.String()) + + if subs.SubRespMsg != nil { + xapp.Logger.Debug("SUBS-SubReq: Handling (immediate response) %s parent %s", idstring(nil, subs, nil), parentTrans.String()) + parentTrans.SendEvent(subs.SubRespMsg, 0) return } - xapp.Logger.Info("Subscription Response Received. RMR SUBSCRIPTION_ID: %v | PAYLOAD SEQUENCE_NUMBER: %v", params.SubId, payload_seq_num) - if !c.registry.IsValidSequenceNumber(payload_seq_num) { - err = errors.New("Unknown Subscription ID: " + strconv.Itoa(int(payload_seq_num)) + " in Subscritpion Response. Message discarded.") + + event := c.sendE2TSubscriptionRequest(subs, trans, parentTrans) + switch themsg := event.(type) { + case *e2ap.E2APSubscriptionResponse: + subs.SubRespMsg = themsg + parentTrans.SendEvent(event, 0) return + case *e2ap.E2APSubscriptionFailure: + //TODO: Possible delete and one retry for subs req + parentTrans.SendEvent(event, 0) + default: + xapp.Logger.Info("SUBS-SubReq: internal delete due event(%s) %s", typeofSubsMessage(event), idstring(trans, subs, nil)) + c.sendE2TSubscriptionDeleteRequest(subs, trans, parentTrans) + parentTrans.SendEvent(nil, 0) } - c.registry.setSubscriptionToConfirmed(payload_seq_num) - xapp.Logger.Info("Subscription Response Registered. Forwarding to Requestor...") - transaction, err := c.tracker.complete_transaction(payload_seq_num, DELETE) + + go c.registry.RemoveFromSubscription(subs, parentTrans, 5*time.Second) +} + +//------------------------------------------------------------------- +// SUBS DELETE Handling +//------------------------------------------------------------------- +func (c *Control) handleSubscriptionDelete(subs *Subscription, parentTrans *Transaction) { + + trans := c.tracker.NewTransaction(subs.GetMeid()) + subs.WaitTransactionTurn(trans) + defer subs.ReleaseTransactionTurn(trans) + defer trans.Release() + + xapp.Logger.Debug("SUBS-SubDelReq: Handling %s parent %s", idstring(trans, subs, nil), parentTrans.String()) + + event := c.sendE2TSubscriptionDeleteRequest(subs, trans, parentTrans) + + parentTrans.SendEvent(event, 0) + go c.registry.RemoveFromSubscription(subs, parentTrans, 5*time.Second) +} + +//------------------------------------------------------------------- +// send to E2T Subscription Request +//------------------------------------------------------------------- +func (c *Control) sendE2TSubscriptionRequest(subs *Subscription, trans *Transaction, parentTrans *Transaction) interface{} { + var err error + var event interface{} = nil + var timedOut bool = false + + subReqMsg := subs.SubReqMsg + subReqMsg.RequestId.Id = 123 + subReqMsg.RequestId.Seq = uint32(subs.GetSubId()) + trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionRequest(subReqMsg) if err != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) - return + xapp.Logger.Error("SUBS-SubReq: %s parent %s", idstring(trans, subs, err), parentTrans.String()) + return event } - xapp.Logger.Info("Subscription ID: %v, from address: %v:%v. Forwarding to E2 Termination...", int(payload_seq_num), transaction.Xapp_instance_address, transaction.Xapp_port) - params.Mbuf = transaction.Mbuf - c.rmrReplyToSender(params) - return + + for retries := uint64(0); retries < e2tMaxSubReqTryCount; retries++ { + desc := fmt.Sprintf("SUBS-SubReq: SubReq to E2T (retry %d)", retries) + c.rmrSend(desc, subs, trans) + event, timedOut = trans.WaitEvent(e2tSubReqTimeout) + if timedOut { + continue + } + break + } + xapp.Logger.Debug("SUBS-SubReq: Response handling event(%s) %s parent %s", typeofSubsMessage(event), idstring(trans, subs, nil), parentTrans.String()) + return event } -func (act Action) String() string { - actions := [...]string{ - "CREATE", - "MERGE", - "DELETE", +//------------------------------------------------------------------- +// send to E2T Subscription Delete Request +//------------------------------------------------------------------- + +func (c *Control) sendE2TSubscriptionDeleteRequest(subs *Subscription, trans *Transaction, parentTrans *Transaction) interface{} { + var err error + var event interface{} + var timedOut bool + + subDelReqMsg := &e2ap.E2APSubscriptionDeleteRequest{} + subDelReqMsg.RequestId.Id = 123 + subDelReqMsg.RequestId.Seq = uint32(subs.GetSubId()) + subDelReqMsg.FunctionId = subs.SubReqMsg.FunctionId + trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionDeleteRequest(subDelReqMsg) + if err != nil { + xapp.Logger.Error("SUBS-SubDelReq: %s parent %s", idstring(trans, subs, err), parentTrans.String()) + return event } - if act < CREATE || act > DELETE { - return "Unknown" + for retries := uint64(0); retries < e2tMaxSubDelReqTryCount; retries++ { + desc := fmt.Sprintf("SUBS-SubDelReq: SubDelReq to E2T (retry %d)", retries) + c.rmrSend(desc, subs, trans) + event, timedOut = trans.WaitEvent(e2tSubDelReqTime) + if timedOut { + continue + } + break } - return actions[act] + xapp.Logger.Debug("SUBS-SubDelReq: Response handling event(%s) %s parent %s", typeofSubsMessage(event), idstring(trans, subs, nil), parentTrans.String()) + return event } -func (act Action) valid() bool { - switch act { - case CREATE, MERGE, DELETE: - return true - default: - return false +//------------------------------------------------------------------- +// handle from E2T Subscription Reponse +//------------------------------------------------------------------- +func (c *Control) handleE2TSubscriptionResponse(params *RMRParams) { + xapp.Logger.Info("MSG-SubResp from E2T: %s", params.String()) + subRespMsg, err := c.e2ap.UnpackSubscriptionResponse(params.Payload) + if err != nil { + xapp.Logger.Error("MSG-SubResp %s", idstring(params, nil, err)) + return } + subs, err := c.registry.GetSubscriptionFirstMatch([]uint16{uint16(subRespMsg.RequestId.Seq), uint16(params.SubId)}) + if err != nil { + xapp.Logger.Error("MSG-SubResp: %s", idstring(params, nil, err)) + return + } + trans := subs.GetTransaction() + if trans == nil { + err = fmt.Errorf("Ongoing transaction not found") + xapp.Logger.Error("MSG-SubResp: %s", idstring(params, subs, err)) + 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(trans, subs, err)) + } + return } -func (c *Control) handleSubscriptionDeleteRequest(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionDeleteRequestSequenceNumber(params.Payload) +//------------------------------------------------------------------- +// handle from E2T Subscription Failure +//------------------------------------------------------------------- +func (c *Control) handleE2TSubscriptionFailure(params *RMRParams) { + xapp.Logger.Info("MSG-SubFail from E2T: %s", params.String()) + subFailMsg, err := c.e2ap.UnpackSubscriptionFailure(params.Payload) if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) + xapp.Logger.Error("MSG-SubFail %s", idstring(params, nil, err)) return } - xapp.Logger.Info("Subscription Delete Request Received. RMR SUBSCRIPTION_ID: %v | PAYLOAD SEQUENCE_NUMBER: %v", params.SubId, payload_seq_num) - if c.registry.IsValidSequenceNumber(payload_seq_num) { - c.registry.deleteSubscription(payload_seq_num) - trackErr := c.trackDeleteTransaction(params, payload_seq_num) - if trackErr != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) - return trackErr - } + subs, err := c.registry.GetSubscriptionFirstMatch([]uint16{uint16(subFailMsg.RequestId.Seq), uint16(params.SubId)}) + if err != nil { + xapp.Logger.Error("MSG-SubFail: %s", idstring(params, nil, err)) + return + } + trans := subs.GetTransaction() + if trans == nil { + err = fmt.Errorf("Ongoing transaction not found") + xapp.Logger.Error("MSG-SubFail: %s", idstring(params, subs, err)) + 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(trans, subs, err)) } - xapp.Logger.Info("Subscription ID: %v. Forwarding to E2 Termination...", int(payload_seq_num)) - c.rmrSend(params) return } -func (c *Control) trackDeleteTransaction(params *xapp.RMRParams, payload_seq_num uint16) (err error) { - src_addr, src_port, err := c.rtmgrClient.SplitSource(params.Src) - xact_key := Transaction_key{payload_seq_num, DELETE} - xact_value := Transaction{*src_addr, *src_port, params.Payload, params.Mbuf} - err = c.tracker.Track_transaction(xact_key, xact_value) +//------------------------------------------------------------------- +// handle from E2T Subscription Delete Response +//------------------------------------------------------------------- +func (c *Control) handleE2TSubscriptionDeleteResponse(params *RMRParams) (err error) { + xapp.Logger.Info("SUBS-SubDelResp from E2T:%s", params.String()) + subDelRespMsg, err := c.e2ap.UnpackSubscriptionDeleteResponse(params.Payload) + if err != nil { + xapp.Logger.Error("SUBS-SubDelResp: %s", idstring(params, nil, err)) + return + } + subs, err := c.registry.GetSubscriptionFirstMatch([]uint16{uint16(subDelRespMsg.RequestId.Seq), uint16(params.SubId)}) + if err != nil { + xapp.Logger.Error("SUBS-SubDelResp: %s", idstring(params, nil, err)) + return + } + trans := subs.GetTransaction() + if trans == nil { + err = fmt.Errorf("Ongoing transaction not found") + xapp.Logger.Error("SUBS-SubDelResp: %s", idstring(params, subs, err)) + 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(trans, subs, err)) + } return } -func (c *Control) handleSubscriptionDeleteResponse(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionDeleteResponseSequenceNumber(params.Payload) +//------------------------------------------------------------------- +// handle from E2T Subscription Delete Failure +//------------------------------------------------------------------- +func (c *Control) handleE2TSubscriptionDeleteFailure(params *RMRParams) { + xapp.Logger.Info("MSG-SubDelFail from E2T:%s", params.String()) + subDelFailMsg, err := c.e2ap.UnpackSubscriptionDeleteFailure(params.Payload) if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) + xapp.Logger.Error("MSG-SubDelFail: %s", idstring(params, nil, err)) return } - var transaction , _= c.tracker.Retrive_transaction(payload_seq_num, DELETE) - sub_route_action := subRouteInfo{DELETE, transaction.Xapp_instance_address, transaction.Xapp_port, payload_seq_num } - go c.rtmgrClient.SubscriptionRequestUpdate() - SubscriptionReqChan <- sub_route_action - - xapp.Logger.Info("Subscription Delete Response Received. RMR SUBSCRIPTION_ID: %v | PAYLOAD SEQUENCE_NUMBER: %v", params.SubId, payload_seq_num) - if c.registry.releaseSequenceNumber(payload_seq_num) { - transaction, err = c.tracker.complete_transaction(payload_seq_num, DELETE) - if err != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) - return - } - xapp.Logger.Info("Subscription ID: %v, from address: %v:%v. Forwarding to E2 Termination...", int(payload_seq_num), transaction.Xapp_instance_address, transaction.Xapp_port) - //params.Src = xAddress + ":" + strconv.Itoa(int(xPort)) - params.Mbuf = transaction.Mbuf - c.rmrReplyToSender(params) + subs, err := c.registry.GetSubscriptionFirstMatch([]uint16{uint16(subDelFailMsg.RequestId.Seq), uint16(params.SubId)}) + if err != nil { + xapp.Logger.Error("MSG-SubDelFail: %s", idstring(params, nil, err)) + return + } + trans := subs.GetTransaction() + if trans == nil { + err = fmt.Errorf("Ongoing transaction not found") + xapp.Logger.Error("MSG-SubDelFail: %s", idstring(params, subs, err)) + 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(trans, subs, err)) } 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" + } +}