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data_roaming_hns.go
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/
data_roaming_hns.go
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package data
import (
"context"
"github.com/pkg/errors"
"github.com/brocaar/chirpstack-network-server/v3/internal/models"
"github.com/brocaar/chirpstack-network-server/v3/internal/roaming"
"github.com/brocaar/lorawan"
"github.com/brocaar/lorawan/backend"
)
// HandleRoamingHNS handles an uplink as a hNS.
func HandleRoamingHNS(ctx context.Context, phyPayload []byte, basePL backend.BasePayload, ulMetaData backend.ULMetaData) error {
// decode PHYPayload
var phy lorawan.PHYPayload
if err := phy.UnmarshalBinary(phyPayload); err != nil {
return errors.Wrap(err, "unmarshal phypayload error")
}
// convert ULMetaData to UplinkRXInfo and UplinkTXInfo
txInfo, err := roaming.ULMetaDataToTXInfo(ulMetaData)
if err != nil {
return errors.Wrap(err, "up meta-data to txinfo error")
}
rxInfo, err := roaming.ULMetaDataToRXInfo(ulMetaData)
if err != nil {
return errors.Wrap(err, "ul meta-data to rxinfo error")
}
// Construct RXPacket
rxPacket := models.RXPacket{
PHYPayload: phy,
TXInfo: txInfo,
RXInfoSet: rxInfo,
RoamingMetaData: &models.RoamingMetaData{
BasePayload: basePL,
ULMetaData: ulMetaData,
},
}
if ulMetaData.DataRate != nil {
rxPacket.DR = *ulMetaData.DataRate
}
// Start the uplink data flow
if err := Handle(ctx, rxPacket); err != nil {
return errors.Wrap(err, "handle uplink error")
}
return nil
}