package control
-/*
-#include <rmr/RIC_message_types.h>
+import (
+ "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"
+ rtmgrhandle "gerrit.o-ran-sc.org/r/ric-plt/submgr/pkg/rtmgr_client/handle"
+ "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
+ httptransport "github.com/go-openapi/runtime/client"
+ "github.com/go-openapi/strfmt"
+ "github.com/spf13/viper"
+ "sync"
+ "time"
+)
-#cgo CFLAGS: -I../
-#cgo LDFLAGS: -lrmr_nng -lnng
-*/
-import "C"
+//-----------------------------------------------------------------------------
+//
+//-----------------------------------------------------------------------------
+var subReqTime time.Duration = 5 * time.Second
+var subDelReqTime time.Duration = 5 * time.Second
+var maxSubReqTryCount uint64 = 2 // Initial try + retry
+var maxSubDelReqTryCount uint64 = 2 // Initial try + retry
-import (
- "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
- "errors"
- "strconv"
+type Control struct {
+ e2ap *E2ap
+ registry *Registry
+ tracker *Tracker
+ timerMap *TimerMap
+ rmrSendMutex sync.Mutex
+ msgCounter uint64
+}
+
+type RMRMeid struct {
+ PlmnID string
+ EnbID string
+ RanName string
+}
+
+const (
+ CREATE Action = 0
+ MERGE Action = 1
+ NONE Action = 2
+ DELETE Action = 3
)
-type Control struct {
- e2ap *E2ap
- registry *Registry
+func init() {
+ xapp.Logger.Info("SUBMGR")
+ viper.AutomaticEnv()
+ viper.SetEnvPrefix("submgr")
+ viper.AllowEmptyEnv(true)
}
-func NewControl() Control {
- return Control{new(E2ap),new(Registry)}
+func NewControl() *Control {
+
+ 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)
+ deleteHandle := rtmgrhandle.NewDeleteXappSubscriptionHandleParamsWithTimeout(10 * time.Second)
+ rtmgrClient := RtmgrClient{client, handle, deleteHandle}
+
+ registry := new(Registry)
+ registry.Initialize()
+ registry.rtmgrClient = &rtmgrClient
+
+ tracker := new(Tracker)
+ tracker.Init()
+
+ timerMap := new(TimerMap)
+ timerMap.Init()
+
+ return &Control{e2ap: new(E2ap),
+ registry: registry,
+ tracker: tracker,
+ timerMap: timerMap,
+ msgCounter: 0,
+ }
}
func (c *Control) Run() {
- xapp.Run(c)
-}
-
-func (c *Control) Consume(mtype, sub_id int, len int, payload []byte) (err error) {
- switch mtype {
- case C.RIC_SUB_REQ:
- err = c.handleSubscriptionRequest(&RmrDatagram{mtype, sub_id, payload})
- case C.RIC_SUB_RESP:
- err = c.handleSubscriptionResponse(&RmrDatagram{mtype, sub_id, payload})
- default:
- err = errors.New("Message Type "+strconv.Itoa(mtype)+" discarded")
- }
- return
-}
-
-func (c *Control) rmrSend(datagram *RmrDatagram) (err error) {
- if !xapp.Rmr.Send(datagram.MessageType, datagram.SubscriptionId, len(datagram.Payload), datagram.Payload) {
- err = errors.New("rmr.Send() failed")
- }
- return
-}
-
-func (c *Control) handleSubscriptionRequest(datagram *RmrDatagram) ( err error) {
- /* TODO: removed to being able to integrate with UEMGR
- content, err := c.e2ap.GetPayloadContent(datagram.Payload)
- */
- xapp.Logger.Info("Subscription Request Message received with ID: %v", datagram.SubscriptionId)
- new_sub_id := c.registry.GetSubscriptionId()
- /* TODO: removed to being able to integrate with UEMGR
- payload, err := c.e2ap.SetSubscriptionSequenceNumber(datagram.Payload, new_sub_id)
- if err != nil {
- xapp.Logger.Error("Unable to set Subscription Sequence Number in Payload due to: "+ err.Error())
- return
- }
- */
- xapp.Logger.Info("New Subscription Registered, forwarding to E2T")
- c.rmrSend(&RmrDatagram{C.RIC_SUB_REQ , new_sub_id, datagram.Payload})
- return
-}
-
-func (c *Control) handleSubscriptionResponse(datagram *RmrDatagram) ( err error) {
- /* TODO: removed to being able to integrate with UEMGR
- content, err := c.e2ap.GetPayloadContent(datagram.Payload)
- */
- xapp.Logger.Info("Subscription Response Message received with ID: %v", datagram.SubscriptionId)
- xapp.Logger.Info("Subscription Response Registered, forwarding to Requestor")
- c.rmrSend(&RmrDatagram{C.RIC_SUB_RESP , datagram.SubscriptionId, datagram.Payload})
- return
-}
\ No newline at end of file
+ xapp.Run(c)
+}
+
+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(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) 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.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 *RMRParams) {
+ xapp.Logger.Info("SubReq from xapp: %s", params.String())
+
+ //
+ //
+ //
+ trans, err := c.tracker.TrackTransaction(NewRmrEndpoint(params.Src),
+ params.Xid,
+ params.Meid,
+ false,
+ true)
+
+ if err != nil {
+ xapp.Logger.Error("SubReq: %s, Dropping this msg. %s", err.Error(), params.String())
+ return
+ }
+
+ //
+ //
+ //
+ trans.SubReqMsg, err = c.e2ap.UnpackSubscriptionRequest(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubReq: %s Dropping this msg. %s", err.Error(), trans)
+ trans.Release()
+ return
+ }
+
+ //
+ //
+ //
+ subs, err := c.registry.ReserveSubscription(&trans.RmrEndpoint, trans.Meid)
+ if err != nil {
+ xapp.Logger.Error("SubReq: %s, Dropping this msg. %s", err.Error(), trans)
+ trans.Release()
+ return
+ }
+
+ err = subs.SetTransaction(trans)
+ if err != nil {
+ xapp.Logger.Error("SubReq: %s, Dropping this msg. %s", err.Error(), trans)
+ subs.Release()
+ trans.Release()
+ return
+ }
+
+ trans.SubReqMsg.RequestId.Seq = uint32(subs.GetSubId())
+
+ //
+ // TODO: subscription create is in fact owned by subscription and not transaction.
+ // Transaction is toward xapp while Subscription is toward ran.
+ // In merge several xapps may wake transactions, while only one subscription
+ // toward ran occurs -> subscription owns subscription creation toward ran
+ //
+ // This is intermediate solution while improving message handling
+ //
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionRequest(trans.SubReqMsg)
+ if err != nil {
+ xapp.Logger.Error("SubReq: %s for trans %s", err.Error(), trans)
+ subs.Release()
+ trans.Release()
+ return
+ }
+
+ c.rmrSend("SubReq: SubReq to E2T", subs, trans)
+
+ c.timerMap.StartTimer("RIC_SUB_REQ", int(subs.GetSubId()), subReqTime, FirstTry, c.handleSubscriptionRequestTimer)
+ xapp.Logger.Debug("SubReq: Debugging trans table = %v", c.tracker.transactionXappTable)
+ return
+}
+
+func (c *Control) handleSubscriptionResponse(params *RMRParams) {
+ xapp.Logger.Info("SubResp from E2T: %s", params.String())
+
+ //
+ //
+ //
+ SubRespMsg, err := c.e2ap.UnpackSubscriptionResponse(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubResp: %s Dropping this msg. %s", err.Error(), params.String())
+ return
+ }
+
+ //
+ //
+ //
+ subs := c.registry.GetSubscription(uint16(SubRespMsg.RequestId.Seq))
+ if subs == nil && params.SubId > 0 {
+ subs = c.registry.GetSubscription(uint16(params.SubId))
+ }
+
+ if subs == nil {
+ xapp.Logger.Error("SubResp: Not valid subscription found payloadSeqNum: %d, SubId: %d. Dropping this msg. %s", SubRespMsg.RequestId.Seq, params.SubId, params.String())
+ return
+ }
+ xapp.Logger.Info("SubResp: subscription found payloadSeqNum: %d, SubId: %d", SubRespMsg.RequestId.Seq, subs.GetSubId())
+
+ //
+ //
+ //
+ trans := subs.GetTransaction()
+ if trans == nil {
+ xapp.Logger.Error("SubResp: Unknown trans. Dropping this msg. SubId: %d", subs.GetSubId())
+ return
+ }
+
+ trans.SubRespMsg = SubRespMsg
+
+ //
+ //
+ //
+ c.timerMap.StopTimer("RIC_SUB_REQ", int(subs.GetSubId()))
+
+ responseReceived := trans.CheckResponseReceived()
+ if responseReceived == true {
+ // Subscription timer already received
+ return
+ }
+
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionResponse(trans.SubRespMsg)
+ if err != nil {
+ xapp.Logger.Error("SubResp: %s for trans %s", err.Error(), trans)
+ trans.Release()
+ return
+ }
+
+ subs.Confirmed()
+ trans.Release()
+ c.rmrReplyToSender("SubResp: SubResp to xapp", subs, trans)
+ return
+}
+
+func (c *Control) handleSubscriptionFailure(params *RMRParams) {
+ xapp.Logger.Info("SubFail from E2T: %s", params.String())
+
+ //
+ //
+ //
+ SubFailMsg, err := c.e2ap.UnpackSubscriptionFailure(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubFail: %s Dropping this msg. %s", err.Error(), params.String())
+ return
+ }
+
+ //
+ //
+ //
+ subs := c.registry.GetSubscription(uint16(SubFailMsg.RequestId.Seq))
+ if subs == nil && params.SubId > 0 {
+ subs = c.registry.GetSubscription(uint16(params.SubId))
+ }
+
+ if subs == nil {
+ xapp.Logger.Error("SubFail: Not valid subscription found payloadSeqNum: %d, SubId: %d. Dropping this msg. %s", SubFailMsg.RequestId.Seq, params.SubId, params.String())
+ return
+ }
+ xapp.Logger.Info("SubFail: subscription found payloadSeqNum: %d, SubId: %d", SubFailMsg.RequestId.Seq, subs.GetSubId())
+
+ //
+ //
+ //
+ trans := subs.GetTransaction()
+ if trans == nil {
+ xapp.Logger.Error("SubFail: Unknown trans. Dropping this msg. SubId: %d", subs.GetSubId())
+ return
+ }
+ trans.SubFailMsg = SubFailMsg
+
+ //
+ //
+ //
+ c.timerMap.StopTimer("RIC_SUB_REQ", int(subs.GetSubId()))
+
+ responseReceived := trans.CheckResponseReceived()
+ if err != nil {
+ return
+ }
+
+ if responseReceived == true {
+ // Subscription timer already received
+ return
+ }
+
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionFailure(trans.SubFailMsg)
+ if err == nil {
+ c.rmrReplyToSender("SubFail: SubFail to xapp", subs, trans)
+ time.Sleep(3 * time.Second)
+ } else {
+ //TODO error handling improvement
+ xapp.Logger.Error("SubFail: %s for trans %s (continuing cleaning)", err.Error(), trans)
+ }
+
+ trans.Release()
+ subs.Release()
+ return
+}
+
+func (c *Control) handleSubscriptionRequestTimer(strId string, nbrId int, tryCount uint64) {
+ xapp.Logger.Info("SubReq timeout: subId: %v, tryCount: %v", nbrId, tryCount)
+
+ subs := c.registry.GetSubscription(uint16(nbrId))
+ if subs == nil {
+ xapp.Logger.Error("SubReq timeout: Unknown payloadSeqNum. Dropping this msg. SubId: %v", nbrId)
+ return
+ }
+
+ trans := subs.GetTransaction()
+ if trans == nil {
+ xapp.Logger.Error("SubReq timeout: Unknown trans. Dropping this msg. SubId: %v", subs.GetSubId())
+ return
+ }
+
+ responseReceived := trans.CheckResponseReceived()
+
+ if responseReceived == true {
+ // Subscription Response or Failure already received
+ return
+ }
+
+ if tryCount < maxSubReqTryCount {
+ xapp.Logger.Info("SubReq timeout: subs: %s trans: %s", subs, trans)
+
+ trans.RetryTransaction()
+
+ c.rmrSend("SubReq timeout: SubReq to E2T", subs, trans)
+
+ tryCount++
+ c.timerMap.StartTimer("RIC_SUB_REQ", int(subs.GetSubId()), subReqTime, tryCount, c.handleSubscriptionRequestTimer)
+ return
+ }
+
+ // Release CREATE transaction
+ trans.Release()
+
+ // Create DELETE transaction (internal and no messages toward xapp)
+ deltrans, err := c.tracker.TrackTransaction(&trans.RmrEndpoint,
+ trans.GetXid(),
+ trans.GetMeid(),
+ false,
+ false)
+
+ if err != nil {
+ xapp.Logger.Error("SubReq timeout: %s, Dropping this msg.", err.Error())
+ //TODO improve error handling. Important at least in merge
+ subs.Release()
+ return
+ }
+
+ deltrans.SubDelReqMsg = &e2ap.E2APSubscriptionDeleteRequest{}
+ deltrans.SubDelReqMsg.RequestId.Id = trans.SubReqMsg.RequestId.Id
+ deltrans.SubDelReqMsg.RequestId.Seq = uint32(subs.GetSubId())
+ deltrans.SubDelReqMsg.FunctionId = trans.SubReqMsg.FunctionId
+ deltrans.Mtype, deltrans.Payload, err = c.e2ap.PackSubscriptionDeleteRequest(deltrans.SubDelReqMsg)
+ if err != nil {
+ xapp.Logger.Error("SubReq timeout: Packing SubDelReq failed. Err: %v", err)
+ //TODO improve error handling. Important at least in merge
+ deltrans.Release()
+ subs.Release()
+ return
+ }
+
+ err = subs.SetTransaction(deltrans)
+ if err != nil {
+ xapp.Logger.Error("SubReq timeout: %s, Dropping this msg.", err.Error())
+ //TODO improve error handling. Important at least in merge
+ deltrans.Release()
+ return
+ }
+
+ c.rmrSend("SubReq timer: SubDelReq to E2T", subs, deltrans)
+ c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()), subDelReqTime, FirstTry, c.handleSubscriptionDeleteRequestTimer)
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteRequest(params *RMRParams) {
+ xapp.Logger.Info("SubDelReq from xapp: %s", params.String())
+
+ //
+ //
+ //
+ trans, err := c.tracker.TrackTransaction(NewRmrEndpoint(params.Src),
+ params.Xid,
+ params.Meid,
+ false,
+ true)
+
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: %s, Dropping this msg. %s", err.Error(), params.String())
+ return
+ }
+
+ //
+ //
+ //
+ trans.SubDelReqMsg, err = c.e2ap.UnpackSubscriptionDeleteRequest(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: %s Dropping this msg. %s", err.Error(), trans)
+ trans.Release()
+ return
+ }
+
+ //
+ //
+ //
+ subs := c.registry.GetSubscription(uint16(trans.SubDelReqMsg.RequestId.Seq))
+ if subs == nil && params.SubId > 0 {
+ subs = c.registry.GetSubscription(uint16(params.SubId))
+ }
+
+ if subs == nil {
+ xapp.Logger.Error("SubDelReq: Not valid subscription found payloadSeqNum: %d, SubId: %d. Dropping this msg. %s", trans.SubDelReqMsg.RequestId.Seq, params.SubId, trans)
+ trans.Release()
+ return
+ }
+ xapp.Logger.Info("SubDelReq: subscription found payloadSeqNum: %d, SubId: %d. %s", trans.SubDelReqMsg.RequestId.Seq, params.SubId, trans)
+
+ err = subs.SetTransaction(trans)
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: %s, Dropping this msg. %s", err.Error(), trans)
+ trans.Release()
+ return
+ }
+
+ //
+ // TODO: subscription delete is in fact owned by subscription and not transaction.
+ // Transaction is toward xapp while Subscription is toward ran.
+ // In merge several xapps may wake transactions, while only one subscription
+ // toward ran occurs -> subscription owns subscription creation toward ran
+ //
+ // This is intermediate solution while improving message handling
+ //
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionDeleteRequest(trans.SubDelReqMsg)
+ if err != nil {
+ xapp.Logger.Error("SubDelReq: %s for trans %s", err.Error(), trans)
+ trans.Release()
+ return
+ }
+
+ subs.UnConfirmed()
+
+ c.rmrSend("SubDelReq: SubDelReq to E2T", subs, trans)
+
+ c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()), subDelReqTime, FirstTry, c.handleSubscriptionDeleteRequestTimer)
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteResponse(params *RMRParams) (err error) {
+ xapp.Logger.Info("SubDelResp from E2T:%s", params.String())
+
+ //
+ //
+ //
+ SubDelRespMsg, err := c.e2ap.UnpackSubscriptionDeleteResponse(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubDelResp: %s Dropping this msg. %s", err.Error(), params.String())
+ return
+ }
+
+ //
+ //
+ //
+ subs := c.registry.GetSubscription(uint16(SubDelRespMsg.RequestId.Seq))
+ if subs == nil && params.SubId > 0 {
+ subs = c.registry.GetSubscription(uint16(params.SubId))
+ }
+
+ if subs == nil {
+ xapp.Logger.Error("SubDelResp: Not valid subscription found payloadSeqNum: %d, SubId: %d. Dropping this msg. %s", SubDelRespMsg.RequestId.Seq, params.SubId, params.String())
+ return
+ }
+ xapp.Logger.Info("SubDelResp: subscription found payloadSeqNum: %d, SubId: %d", SubDelRespMsg.RequestId.Seq, subs.GetSubId())
+
+ //
+ //
+ //
+ trans := subs.GetTransaction()
+ if trans == nil {
+ xapp.Logger.Error("SubDelResp: Unknown trans. Dropping this msg. SubId: %d", subs.GetSubId())
+ return
+ }
+
+ trans.SubDelRespMsg = SubDelRespMsg
+
+ //
+ //
+ //
+ c.timerMap.StopTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()))
+
+ responseReceived := trans.CheckResponseReceived()
+ if responseReceived == true {
+ // Subscription Delete timer already received
+ return
+ }
+
+ c.sendSubscriptionDeleteResponse("SubDelResp", trans, subs)
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteFailure(params *RMRParams) {
+ xapp.Logger.Info("SubDelFail from E2T:%s", params.String())
+
+ //
+ //
+ //
+ SubDelFailMsg, err := c.e2ap.UnpackSubscriptionDeleteFailure(params.Payload)
+ if err != nil {
+ xapp.Logger.Error("SubDelFail: %s Dropping this msg. %s", err.Error(), params.String())
+ return
+ }
+
+ //
+ //
+ //
+ subs := c.registry.GetSubscription(uint16(SubDelFailMsg.RequestId.Seq))
+ if subs == nil && params.SubId > 0 {
+ subs = c.registry.GetSubscription(uint16(params.SubId))
+ }
+
+ if subs == nil {
+ xapp.Logger.Error("SubDelFail: Not valid subscription found payloadSeqNum: %d, SubId: %d. Dropping this msg. %s", SubDelFailMsg.RequestId.Seq, params.SubId, params.String())
+ return
+ }
+ xapp.Logger.Info("SubDelFail: subscription found payloadSeqNum: %d, SubId: %d", SubDelFailMsg.RequestId.Seq, subs.GetSubId())
+
+ //
+ //
+ //
+ trans := subs.GetTransaction()
+ if trans == nil {
+ xapp.Logger.Error("SubDelFail: Unknown trans. Dropping this msg. SubId: %d", subs.GetSubId())
+ return
+ }
+ trans.SubDelFailMsg = SubDelFailMsg
+
+ //
+ //
+ //
+ c.timerMap.StopTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()))
+
+ responseReceived := trans.CheckResponseReceived()
+ if responseReceived == true {
+ // Subscription Delete timer already received
+ return
+ }
+
+ c.sendSubscriptionDeleteResponse("SubDelFail", trans, subs)
+ return
+}
+
+func (c *Control) handleSubscriptionDeleteRequestTimer(strId string, nbrId int, tryCount uint64) {
+ xapp.Logger.Info("SubDelReq timeout: subId: %v, tryCount: %v", nbrId, tryCount)
+
+ subs := c.registry.GetSubscription(uint16(nbrId))
+ if subs == nil {
+ xapp.Logger.Error("SubDelReq timeout: Unknown payloadSeqNum. Dropping this msg. SubId: %v", nbrId)
+ return
+ }
+
+ trans := subs.GetTransaction()
+ if trans == nil {
+ xapp.Logger.Error("SubDelReq timeout: Unknown trans. Dropping this msg. SubId: %v", subs.GetSubId())
+ return
+ }
+
+ responseReceived := trans.CheckResponseReceived()
+ if responseReceived == true {
+ // Subscription Delete Response or Failure already received
+ return
+ }
+
+ if tryCount < maxSubDelReqTryCount {
+ // Set possible to handle new response for the subId
+ trans.RetryTransaction()
+ c.rmrSend("SubDelReq timeout: SubDelReq to E2T", subs, trans)
+ tryCount++
+ c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()), subReqTime, tryCount, c.handleSubscriptionDeleteRequestTimer)
+ return
+ }
+
+ c.sendSubscriptionDeleteResponse("SubDelReq(timer)", trans, subs)
+ return
+}
+
+func (c *Control) sendSubscriptionDeleteResponse(desc string, trans *Transaction, subs *Subscription) {
+
+ if trans.ForwardRespToXapp == true {
+ //Always generate SubDelResp
+ trans.SubDelRespMsg = &e2ap.E2APSubscriptionDeleteResponse{}
+ trans.SubDelRespMsg.RequestId.Id = trans.SubDelReqMsg.RequestId.Id
+ trans.SubDelRespMsg.RequestId.Seq = uint32(subs.GetSubId())
+ trans.SubDelRespMsg.FunctionId = trans.SubDelReqMsg.FunctionId
+
+ var err error
+ trans.Mtype, trans.Payload, err = c.e2ap.PackSubscriptionDeleteResponse(trans.SubDelRespMsg)
+ if err == nil {
+ c.rmrReplyToSender(desc+": SubDelResp to xapp", subs, trans)
+ time.Sleep(3 * time.Second)
+ } else {
+ //TODO error handling improvement
+ xapp.Logger.Error("%s: %s for trans %s (continuing cleaning)", desc, err.Error(), trans)
+ }
+ }
+
+ trans.Release()
+ subs.Release()
+}
Code Review / ric-plt / submgr.git / blobdiff