| /* |
| ================================================================================== |
| Copyright (c) 2019 AT&T Intellectual Property. |
| Copyright (c) 2019 Nokia |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| ================================================================================== |
| */ |
| |
| package control |
| |
| import ( |
| "errors" |
| 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" |
| "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 |
| timerMap *TimerMap |
| rmrSendMutex sync.Mutex |
| msgCounter uint64 |
| } |
| |
| type RMRMeid struct { |
| PlmnID string |
| EnbID string |
| RanName string |
| } |
| |
| var seedSN uint16 |
| |
| const ( |
| CREATE Action = 0 |
| 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 { |
| 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 { |
| registry := new(Registry) |
| registry.Initialize(seedSN) |
| |
| tracker := new(Tracker) |
| tracker.Init() |
| |
| 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) |
| deleteHandle := rtmgrhandle.NewDeleteXappSubscriptionHandleParamsWithTimeout(10 * time.Second) |
| rtmgrClient := RtmgrClient{client, handle, deleteHandle} |
| |
| return &Control{e2ap: new(E2ap), |
| registry: registry, |
| rtmgrClient: &rtmgrClient, |
| tracker: tracker, |
| timerMap: timerMap, |
| msgCounter: 0, |
| } |
| } |
| |
| func (c *Control) Run() { |
| 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 |
| } |