X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=pkg%2Fcontrol%2Fcontrol.go;h=18eeb4c0b9ec77a3ed3551bb5acedede7b0717a3;hb=refs%2Fchanges%2F97%2F2197%2F6;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..18eeb4c --- a/pkg/control/control.go +++ b/pkg/control/control.go @@ -19,266 +19,619 @@ package control -/* -#include -#include - -#cgo CFLAGS: -I../ -#cgo LDFLAGS: -lrmr_nng -lnng -*/ -import "C" - import ( - "errors" - "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" + "fmt" + //"gerrit.o-ran-sc.org/r/ric-plt/e2ap/pkg/packer" 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" "math/rand" - "strconv" + "sync" "time" ) +//----------------------------------------------------------------------------- +// +//----------------------------------------------------------------------------- + +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 + type Control struct { - e2ap *E2ap - registry *Registry - rtmgrClient *RtmgrClient - tracker *Tracker - rc_chan chan *xapp.RMRParams + e2ap *E2ap + registry *Registry + rtmgrClient *RtmgrClient + 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) +var seedSN uint16 const ( CREATE Action = 0 - MERGE Action = 1 + MERGE 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 { + seedSN = uint16(viper.GetInt("seed_sn")) + if seedSN == 0 { rand.Seed(time.Now().UnixNano()) - SEEDSN = uint16(rand.Intn(65535)) + seedSN = uint16(rand.Intn(65535)) } - if SEEDSN > 65535 { - SEEDSN = 0 + if seedSN > 65535 { + seedSN = 0 } - xapp.Logger.Info("SUBMGR: Initial Sequence Number: %v", SEEDSN) + xapp.Logger.Info("SUBMGR: Initial Sequence Number: %v", seedSN) } -func NewControl() Control { +func NewControl() *Control { + registry := new(Registry) - registry.Initialize(SEEDSN) + registry.Initialize(seedSN) tracker := new(Tracker) tracker.Init() - transport := httptransport.New(viper.GetString("rtmgr.HostAddr") + ":" + viper.GetString("rtmgr.port"), viper.GetString("rtmgr.baseUrl"), []string{"http"}) + timerMap := new(TimerMap) + timerMap.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} + deleteHandle := rtmgrhandle.NewDeleteXappSubscriptionHandleParamsWithTimeout(10 * time.Second) + rtmgrClient := RtmgrClient{client, handle, deleteHandle} + + rtmgrClientPtr := &rtmgrClient + + //TODO: to make this better. Now it is just a hack. + registry.rtmgrClient = rtmgrClientPtr - return Control{new(E2ap), registry, &rtmgrClient, tracker, make(chan *xapp.RMRParams)} + return &Control{e2ap: new(E2ap), + registry: registry, + rtmgrClient: rtmgrClientPtr, + 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") +func (c *Control) rmrSend(desc string, subs *Subscription, trans *Transaction, payload []byte, payloadLen int) (err error) { + params := &RMRParams{&xapp.RMRParams{}} + params.Mtype = trans.GetMtype() + params.SubId = int(subs.GetSubId()) + params.Xid = trans.GetXid() + params.Meid = subs.GetMeid() + params.Src = "" + params.PayloadLen = payloadLen + params.Payload = payload + params.Mbuf = nil + + return c.rmrSendRaw(desc, params) +} + +func (c *Control) rmrReplyToSender(desc string, subs *Subscription, trans *Transaction, mType int, payload []byte, payloadLen int) (err error) { + params := &RMRParams{&xapp.RMRParams{}} + params.Mtype = mType + params.SubId = int(subs.GetSubId()) + params.Xid = trans.GetXid() + params.Meid = subs.GetMeid() + params.Src = "" + params.PayloadLen = payloadLen + params.Payload = payload + 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 + return nil } -func (c *Control) rmrReplyToSender(params *xapp.RMRParams) (err error) { - if !xapp.Rmr.Send(params, true) { - err = errors.New("rmr.Send() failed") +func (c *Control) handleSubscriptionRequest(params *RMRParams) { + xapp.Logger.Info("SubReq from xapp: %s", params.String()) + + 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) + return + } + + subs, err := c.registry.ReserveSubscription(RmrEndpoint{*srcAddr, *srcPort}, params.Meid) + if err != nil { + xapp.Logger.Error("SubReq: %s, Dropping this msg.", err.Error()) + return } + + // + // WIP RICPLT-2979 + // + /* + e2SubReq := packerif.NewPackerSubscriptionRequest() + packedData := &packer.PackedData{} + packedData.Buf = params.Payload + err = e2SubReq.UnPack(packedData) + if err != nil { + xapp.Logger.Error("SubReq: UnPack() failed: %s", err.Error()) + } + getErr, subReq := e2SubReq.Get() + if getErr != nil { + xapp.Logger.Error("SubReq: Get() failed: %s", err.Error()) + } + + + subReq.RequestId.Seq = uint32(subs.GetSubId()) + + err = e2SubReq.Set(subReq) + if err != nil { + xapp.Logger.Error("SubReq: Set() failed: %s", err.Error()) + return + } + err, packedData = e2SubReq.Pack(nil) + if err != nil { + xapp.Logger.Error("SubReq: Pack() failed: %s", err.Error()) + return + } + + params.PayloadLen = len(packedData.Buf) + params.Payload = packedData.Buf + */ + // + // + // + + params.SubId = int(subs.GetSubId()) + err = c.e2ap.SetSubscriptionRequestSequenceNumber(params.Payload, subs.GetSubId()) + if err != nil { + xapp.Logger.Error("SubReq: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, %s", err, params.String()) + c.registry.DelSubscription(subs.Seq) + return + } + + // Create transatcion record for every subscription request + var forwardRespToXapp bool = true + var responseReceived bool = false + trans, err := c.tracker.TrackTransaction(RmrEndpoint{*srcAddr, *srcPort}, params, responseReceived, forwardRespToXapp) + if err != nil { + xapp.Logger.Error("SubReq: %s, Dropping this msg.", err.Error()) + c.registry.DelSubscription(subs.Seq) + return + } + + err = subs.SetTransaction(trans) + if err != nil { + xapp.Logger.Error("SubReq: %s, Dropping this msg.", err.Error()) + c.registry.DelSubscription(subs.Seq) + trans.Release() + return + } + + c.rmrSend("SubReq to E2T", subs, trans, params.Payload, params.PayloadLen) + + c.timerMap.StartTimer("RIC_SUB_REQ", int(subs.Seq), subReqTime, FirstTry, c.handleSubscriptionRequestTimer) + xapp.Logger.Debug("SubReq: Debugging trans table = %v", c.tracker.transactionXappTable) return } -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) - } +func (c *Control) handleSubscriptionResponse(params *RMRParams) { + xapp.Logger.Info("SubResp from E2T: %s", params.String()) + + 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) + + subs := c.registry.GetSubscription(payloadSeqNum) + if subs == nil { + xapp.Logger.Error("SubResp: Unknown payloadSeqNum. Dropping this msg. PayloadSeqNum: %v, SubId: %v", payloadSeqNum, params.SubId) + return + } + + trans := subs.GetTransaction() + + c.timerMap.StopTimer("RIC_SUB_REQ", int(payloadSeqNum)) + + responseReceived := trans.CheckResponseReceived() + if responseReceived == true { + // Subscription timer already received + return + } + + subs.Confirmed() + trans.Release() + c.rmrReplyToSender("SubResp to xapp", subs, trans, params.Mtype, params.Payload, params.PayloadLen) + xapp.Logger.Info("SubResp: SubId: %v, from address: %s. Deleting trans record", payloadSeqNum, trans.RmrEndpoint) + return } -func (c *Control) handleSubscriptionRequest(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionRequestSequenceNumber(params.Payload) +func (c *Control) handleSubscriptionFailure(params *RMRParams) { + xapp.Logger.Info("SubFail from E2T: %s", params.String()) + + payloadSeqNum, err := c.e2ap.GetSubscriptionFailureSequenceNumber(params.Payload) if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) + 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) + + subs := c.registry.GetSubscription(payloadSeqNum) + if subs == nil { + xapp.Logger.Error("SubFail: Unknown payloadSeqNum. Dropping this msg. PayloadSeqNum: %v, SubId: %v", payloadSeqNum, params.SubId) + return + } + + trans := subs.GetTransaction() + if trans == nil { + xapp.Logger.Error("SubFail: Unknown trans. Dropping this msg. PayloadSeqNum: %v, SubId: %v", payloadSeqNum, params.SubId) 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() + c.timerMap.StopTimer("RIC_SUB_REQ", int(payloadSeqNum)) - _, err = c.e2ap.SetSubscriptionRequestSequenceNumber(params.Payload, new_sub_id) + responseReceived := trans.CheckResponseReceived() if err != nil { - err = errors.New("Unable to set Subscription Sequence Number in Payload due to: " + err.Error()) + 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: %s. Forwarding response to xApp", payloadSeqNum, trans.RmrEndpoint) + + c.rmrReplyToSender("SubFail to xapp", subs, trans, params.Mtype, params.Payload, params.PayloadLen) + + time.Sleep(3 * time.Second) + + xapp.Logger.Info("SubFail: Deleting trans record. SubId: %v, Xid: %s", params.SubId, params.Xid) + trans.Release() + if !c.registry.DelSubscription(payloadSeqNum) { + xapp.Logger.Error("SubFail: Failed to release sequency number. SubId: %v, Xid: %s", params.SubId, params.Xid) + } + 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 } - src_addr, src_port, err := c.rtmgrClient.SplitSource(params.Src) + 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: Resending SubReq to E2T: Mtype: %v, SubId: %v, Xid %s, Meid %v", trans.OrigParams.Mtype, subs.GetSubId(), trans.GetXid(), subs.GetMeid()) + + trans.RetryTransaction() + + c.rmrSend("SubReq(SubReq timer) to E2T", subs, trans, trans.OrigParams.Payload, trans.OrigParams.PayloadLen) + + tryCount++ + c.timerMap.StartTimer("RIC_SUB_REQ", int(subs.GetSubId()), subReqTime, tryCount, c.handleSubscriptionRequestTimer) + return + } + + var subDelReqPayload []byte + subDelReqPayload, err := c.e2ap.PackSubscriptionDeleteRequest(trans.OrigParams.Payload, subs.GetSubId()) if err != nil { - xapp.Logger.Error("Failed to update routing-manager about the subscription request with reason: %s", err) + xapp.Logger.Error("SubReq timeout: Packing SubDelReq failed. Err: %v", 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) + // Cancel failed subscription + params := &RMRParams{&xapp.RMRParams{}} + params.Mtype = 12020 // RIC SUBSCRIPTION DELETE + params.SubId = int(subs.GetSubId()) + params.Xid = trans.GetXid() + params.Meid = subs.GetMeid() + params.Src = trans.OrigParams.Src + params.PayloadLen = len(subDelReqPayload) + params.Payload = subDelReqPayload + params.Mbuf = nil + + // Delete CREATE transaction + trans.Release() + + // Create DELETE transaction (internal and no messages toward xapp) + var forwardRespToXapp bool = false + var respReceived bool = false + deltrans, err := c.tracker.TrackTransaction(trans.RmrEndpoint, params, respReceived, forwardRespToXapp) if err != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) + xapp.Logger.Error("SubReq timeout: %s, Dropping this msg.", err.Error()) return } - /* 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 + err = subs.SetTransaction(deltrans) + if err != nil { + xapp.Logger.Error("SubReq timeout: %s, Dropping this msg.", err.Error()) + deltrans.Release() + return + } - // Setting new subscription ID in the RMR header - params.SubId = int(new_sub_id) + c.rmrSend("SubDelReq(SubReq timer) to E2T", subs, deltrans, deltrans.OrigParams.Payload, deltrans.OrigParams.PayloadLen) - 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) + c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()), subDelReqTime, FirstTry, c.handleSubscriptionDeleteRequestTimer) return } -func (c *Control) handleSubscriptionResponse(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionResponseSequenceNumber(params.Payload) +func (c *Control) handleSubscriptionDeleteRequest(params *RMRParams) { + xapp.Logger.Info("SubDelReq from xapp: %s", params.String()) + + srcAddr, srcPort, err := c.rtmgrClient.SplitSource(params.Src) if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) + xapp.Logger.Error("SubDelReq: Failed to update routing-manager. Dropping this msg. Err: %s, SubId: %v, Xid: %s", err, params.SubId, params.Xid) 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.") + + 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) + + subs := c.registry.GetSubscription(payloadSeqNum) + if subs == nil { + xapp.Logger.Error("SubDelReq: Not valid sequence number. Dropping this msg. SubId: %v, Xid: %s", params.SubId, params.Xid) + return + } + + var forwardRespToXapp bool = true + var respReceived bool = false + trans, err := c.tracker.TrackTransaction(RmrEndpoint{*srcAddr, *srcPort}, params, respReceived, forwardRespToXapp) + if err != nil { + xapp.Logger.Error("SubDelReq: %s, Dropping this msg.", err.Error()) return } - 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) + + err = subs.SetTransaction(trans) if err != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) + xapp.Logger.Error("SubDelReq: %s, Dropping this msg.", err.Error()) + trans.Release() 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.Mbuf = transaction.Mbuf - c.rmrReplyToSender(params) + + subs.UnConfirmed() + + c.rmrSend("SubDelReq to E2T", subs, trans, trans.OrigParams.Payload, trans.OrigParams.PayloadLen) + + c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()), subDelReqTime, FirstTry, c.handleSubscriptionDeleteRequestTimer) return } -func (act Action) String() string { - actions := [...]string{ - "CREATE", - "MERGE", - "DELETE", +func (c *Control) handleSubscriptionDeleteResponse(params *RMRParams) (err error) { + xapp.Logger.Info("SubDelResp from E2T:%s", params.String()) + + 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) - if act < CREATE || act > DELETE { - return "Unknown" + subs := c.registry.GetSubscription(payloadSeqNum) + if subs == nil { + xapp.Logger.Error("SubDelResp: Unknown payloadSeqNum. Dropping this msg. PayloadSeqNum: %v, SubId: %v", payloadSeqNum, params.SubId) + return } - return actions[act] -} -func (act Action) valid() bool { - switch act { - case CREATE, MERGE, DELETE: - return true - default: - return false + trans := subs.GetTransaction() + if trans == nil { + xapp.Logger.Error("SubDelResp: Unknown trans. Dropping this msg. PayloadSeqNum: %v, SubId: %v", subs.GetSubId(), params.SubId) + return } + + c.timerMap.StopTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId())) + + responseReceived := trans.CheckResponseReceived() + if responseReceived == true { + // Subscription Delete timer already received + return + } + + trans.Release() + + if trans.ForwardRespToXapp == true { + c.rmrReplyToSender("SubDelResp to xapp", subs, trans, params.Mtype, params.Payload, params.PayloadLen) + time.Sleep(3 * time.Second) + } + + xapp.Logger.Info("SubDelResp: Deleting trans record. SubId: %v, Xid: %s", subs.GetSubId(), trans.GetXid()) + if !c.registry.DelSubscription(subs.GetSubId()) { + xapp.Logger.Error("SubDelResp: Failed to release sequency number. SubId: %v, Xid: %s", subs.GetSubId(), trans.GetXid()) + return + } + return } -func (c *Control) handleSubscriptionDeleteRequest(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionDeleteRequestSequenceNumber(params.Payload) +func (c *Control) handleSubscriptionDeleteFailure(params *RMRParams) { + xapp.Logger.Info("SubDelFail from E2T:%s", params.String()) + + payloadSeqNum, err := c.e2ap.GetSubscriptionDeleteFailureSequenceNumber(params.Payload) if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) + xapp.Logger.Error("SubDelFail: Unable to get Sequence Number from Payload. Dropping this msg. Err: %v, %s", err, params.String()) + return + } + xapp.Logger.Info("SubDelFail: Received payloadSeqNum: %v", payloadSeqNum) + + subs := c.registry.GetSubscription(payloadSeqNum) + if subs == nil { + xapp.Logger.Error("SubDelFail: Unknown payloadSeqNum. Dropping this msg. PayloadSeqNum: %v, SubId: %v", payloadSeqNum, params.SubId) 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 + + trans := subs.GetTransaction() + if trans == nil { + xapp.Logger.Error("SubDelFail: Unknown trans. Dropping this msg. PayloadSeqNum: %v, SubId: %v", subs.GetSubId(), params.SubId) + return + } + + c.timerMap.StopTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId())) + + responseReceived := trans.CheckResponseReceived() + if responseReceived == true { + // Subscription Delete timer already received + return + } + if trans.ForwardRespToXapp == true { + var subDelRespPayload []byte + subDelRespPayload, err = c.e2ap.PackSubscriptionDeleteResponse(trans.OrigParams.Payload, subs.GetSubId()) + if err != nil { + xapp.Logger.Error("SubDelFail:Packing SubDelResp failed. Err: %v", err) + return } + + // RIC SUBSCRIPTION DELETE RESPONSE + c.rmrReplyToSender("SubDelFail to xapp", subs, trans, 12021, subDelRespPayload, len(subDelRespPayload)) + time.Sleep(3 * time.Second) } - 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) + xapp.Logger.Info("SubDelFail: Deleting trans record. SubId: %v, Xid: %s", subs.GetSubId(), trans.GetXid()) + trans.Release() + if !c.registry.DelSubscription(subs.GetSubId()) { + xapp.Logger.Error("SubDelFail: Failed to release sequency number. Err: %v, SubId: %v, Xid: %s", err, subs.GetSubId(), trans.GetXid()) + return + } return } -func (c *Control) handleSubscriptionDeleteResponse(params *xapp.RMRParams) (err error) { - payload_seq_num, err := c.e2ap.GetSubscriptionDeleteResponseSequenceNumber(params.Payload) - if err != nil { - err = errors.New("Unable to get Subscription Sequence Number from Payload due to: " + err.Error()) +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 } - 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 tryCount < maxSubDelReqTryCount { + xapp.Logger.Info("SubDelReq timeout: Resending SubDelReq to E2T: Mtype: %v, SubId: %v, Xid %s, Meid %v", trans.OrigParams.Mtype, subs.GetSubId(), trans.GetXid(), subs.GetMeid()) + // Set possible to handle new response for the subId + + trans.RetryTransaction() + + c.rmrSend("SubDelReq(SubDelReq timer) to E2T", subs, trans, trans.OrigParams.Payload, trans.OrigParams.PayloadLen) + + tryCount++ + c.timerMap.StartTimer("RIC_SUB_DEL_REQ", int(subs.GetSubId()), subReqTime, tryCount, c.handleSubscriptionDeleteRequestTimer) + return + } + + if trans.ForwardRespToXapp == true { + var subDelRespPayload []byte + subDelRespPayload, err := c.e2ap.PackSubscriptionDeleteResponse(trans.OrigParams.Payload, subs.GetSubId()) if err != nil { - xapp.Logger.Error("Failed to create a transaction record due to %v", err) + xapp.Logger.Error("SubDelReq timeout: Unable to pack payload. Dropping this this msg. Err: %v, SubId: %v, Xid: %s, Payload %x", err, subs.GetSubId(), trans.GetXid(), trans.OrigParams.Payload) 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) + + // RIC SUBSCRIPTION DELETE RESPONSE + c.rmrReplyToSender("SubDelResp(SubDelReq timer) to xapp", subs, trans, 12021, subDelRespPayload, len(subDelRespPayload)) + + time.Sleep(3 * time.Second) + + } + + xapp.Logger.Info("SubDelReq timeout: Deleting trans record. SubId: %v, Xid: %s", subs.GetSubId(), trans.GetXid()) + trans.Release() + if !c.registry.DelSubscription(subs.GetSubId()) { + xapp.Logger.Error("SubDelReq timeout: Failed to release sequency number. SubId: %v, Xid: %s", subs.GetSubId(), trans.GetXid()) } return }