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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,29 @@ | ||
| // Copyright 2024 Louis Royer and the NextMN contributors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style license that can be | ||
| // found in the LICENSE file. | ||
| // SPDX-License-Identifier: MIT | ||
|
|
||
| package cli | ||
|
|
||
| import ( | ||
| "github.com/nextmn/gnb-lite/internal/radio" | ||
| "github.com/nextmn/gnb-lite/internal/session" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| ) | ||
|
|
||
| type Cli struct { | ||
| Radio *radio.Radio | ||
| PduSessions *session.PduSessions | ||
| } | ||
|
|
||
| func NewCli(r *radio.Radio, p *session.PduSessions) *Cli { | ||
| return &Cli{ | ||
| Radio: r, | ||
| PduSessions: p, | ||
| } | ||
| } | ||
|
|
||
| func (cli *Cli) Register(e *gin.Engine) { | ||
| e.POST("/cli/ps/handover", cli.PsHandover) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,58 @@ | ||
| // Copyright 2024 Louis Royer and the NextMN contributors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style license that can be | ||
| // found in the LICENSE file. | ||
| // SPDX-License-Identifier: MIT | ||
|
|
||
| package cli | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "net/http" | ||
|
|
||
| "github.com/nextmn/json-api/jsonapi" | ||
| "github.com/nextmn/json-api/jsonapi/n1n2" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| type PsHandover struct { | ||
| UeCtrl jsonapi.ControlURI `json:"ue-ctrl"` | ||
| GNBTarget jsonapi.ControlURI `json:"gnb-target"` | ||
| Sessions []n1n2.Session `json:"sessions"` | ||
| } | ||
|
|
||
| func (cli *Cli) PsHandover(c *gin.Context) { | ||
| var ps PsHandover | ||
| if err := c.BindJSON(&ps); err != nil { | ||
| logrus.WithError(err).Error("could not deserialize") | ||
| c.JSON(http.StatusBadRequest, jsonapi.MessageWithError{Message: "could not deserialize", Error: err}) | ||
| } | ||
| go cli.HandlePsHandover(ps) | ||
| c.Status(http.StatusNotImplemented) | ||
| } | ||
|
|
||
| func (cli *Cli) HandlePsHandover(ps PsHandover) { | ||
| ctx := cli.PduSessions.Context() | ||
| hr := n1n2.HandoverRequired{ | ||
| SourcegNB: cli.PduSessions.Control, | ||
| Ue: ps.UeCtrl, | ||
| } | ||
| reqBody, err := json.Marshal(hr) | ||
| if err != nil { | ||
| logrus.WithError(err).Error("Could not marshal n1n2.HandoverRequired") | ||
| return | ||
| } | ||
| req, err := http.NewRequestWithContext(ctx, http.MethodPost, cli.PduSessions.Cp.JoinPath("ps/handover-required").String(), bytes.NewBuffer(reqBody)) | ||
| if err != nil { | ||
| logrus.WithError(err).Error("Could not create ps/handover-required") | ||
| return | ||
| } | ||
| req.Header.Set("User-Agent", cli.PduSessions.UserAgent) | ||
| req.Header.Set("Content-Type", "application/json; charset=UTF-8") | ||
| if _, err := cli.PduSessions.Client.Do(req); err != nil { | ||
| logrus.WithError(err).Error("Could not send ps/handover-required") | ||
| return | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,65 @@ | ||
| // Copyright 2024 Louis Royer and the NextMN contributors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style license that can be | ||
| // found in the LICENSE file. | ||
| // SPDX-License-Identifier: MIT | ||
|
|
||
| package session | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "net/http" | ||
|
|
||
| "github.com/nextmn/json-api/jsonapi" | ||
| "github.com/nextmn/json-api/jsonapi/n1n2" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| func (s *PduSessions) HandoverCommand(c *gin.Context) { | ||
| var ps n1n2.HandoverCommand | ||
| if err := c.BindJSON(&ps); err != nil { | ||
| logrus.WithError(err).Error("could not deserialize") | ||
| c.JSON(http.StatusBadRequest, jsonapi.MessageWithError{Message: "could not deserialize", Error: err}) | ||
| return | ||
| } | ||
| logrus.WithFields(logrus.Fields{ | ||
| "ue": ps.UeCtrl.String(), | ||
| }).Info("New Handover Command") | ||
| go s.HandleHandoverCommand(ps) | ||
| c.JSON(http.StatusAccepted, jsonapi.Message{Message: "please refer to logs for more information"}) | ||
| } | ||
|
|
||
| func (s *PduSessions) HandleHandoverCommand(ps n1n2.HandoverCommand) { | ||
| // Add forwarder for downlink | ||
| for _, session := range ps.Sessions { | ||
| if session.ForwardDownlinkFteid == nil || session.DownlinkFteid == nil { | ||
| // TODO: notify CP of error | ||
| continue | ||
| } | ||
| s.manager.ForwardDownlink[session.DownlinkFteid.Teid] = session.ForwardDownlinkFteid | ||
| // TODO: remove downlink forward with a timer | ||
| // TODO: remove pdu session after a timer | ||
| } | ||
|
|
||
| ctx := s.Context() | ||
| // Forward to UE | ||
| reqBody, err := json.Marshal(ps) | ||
| if err != nil { | ||
| logrus.WithError(err).Error("Could not marshal n1n2.HandoverCommand") | ||
| return | ||
| } | ||
| req, err := http.NewRequestWithContext(ctx, http.MethodPost, ps.UeCtrl.JoinPath("ps/handover-command").String(), bytes.NewBuffer(reqBody)) | ||
| if err != nil { | ||
| logrus.WithError(err).Error("Could not create ps/handover-command") | ||
| return | ||
| } | ||
| req.Header.Set("User-Agent", s.UserAgent) | ||
| req.Header.Set("Content-Type", "application/json; charset=UTF-8") | ||
| if _, err := s.Client.Do(req); err != nil { | ||
| logrus.WithError(err).Error("Could not send ps/handover-command") | ||
| return | ||
| } | ||
|
|
||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,62 @@ | ||
| // Copyright 2024 Louis Royer and the NextMN contributors. All rights reserved. | ||
| // Use of this source code is governed by a MIT-style license that can be | ||
| // found in the LICENSE file. | ||
| // SPDX-License-Identifier: MIT | ||
|
|
||
| package session | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "encoding/json" | ||
| "net/http" | ||
|
|
||
| "github.com/nextmn/json-api/jsonapi" | ||
| "github.com/nextmn/json-api/jsonapi/n1n2" | ||
|
|
||
| "github.com/gin-gonic/gin" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
|
|
||
| func (s *PduSessions) HandoverConfirm(c *gin.Context) { | ||
| var ps n1n2.HandoverConfirm | ||
| if err := c.BindJSON(&ps); err != nil { | ||
| logrus.WithError(err).Error("could not deserialize") | ||
| c.JSON(http.StatusBadRequest, jsonapi.MessageWithError{Message: "could not deserialize", Error: err}) | ||
| return | ||
| } | ||
| logrus.WithFields(logrus.Fields{ | ||
| "ue": ps.UeCtrl.String(), | ||
| }).Info("New Handover Confirm") | ||
| go s.HandleHandoverConfirm(ps) | ||
| c.JSON(http.StatusAccepted, jsonapi.Message{Message: "please refer to logs for more information"}) | ||
| } | ||
|
|
||
| func (s *PduSessions) HandleHandoverConfirm(ps n1n2.HandoverConfirm) { | ||
| ctx := s.Context() | ||
| // forward to CP | ||
| resp := n1n2.HandoverNotify{ | ||
| // Header | ||
| UeCtrl: ps.UeCtrl, | ||
| Cp: ps.Cp, | ||
| TargetGnb: ps.TargetGnb, | ||
| // Handover Notify | ||
| Sessions: ps.Sessions, | ||
| SourceGnb: ps.SourceGnb, | ||
| } | ||
| reqBody, err := json.Marshal(resp) | ||
| if err != nil { | ||
| logrus.WithError(err).Error("Could not marshal n1n2.HandoverNotify") | ||
| return | ||
| } | ||
| req, err := http.NewRequestWithContext(ctx, http.MethodPost, s.Cp.JoinPath("ps/handover-notify").String(), bytes.NewBuffer(reqBody)) | ||
| if err != nil { | ||
| logrus.WithError(err).Error("Could not create ps/handover-notify") | ||
| return | ||
| } | ||
| req.Header.Set("User-Agent", s.UserAgent) | ||
| req.Header.Set("Content-Type", "application/json; charset=UTF-8") | ||
| if _, err := s.Client.Do(req); err != nil { | ||
| logrus.WithError(err).Error("Could not send ps/handover-notify") | ||
| return | ||
| } | ||
| } |
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