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device_mode_ind.go
54 lines (45 loc) · 1.32 KB
/
device_mode_ind.go
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package maccommand
import (
"context"
"fmt"
"github.com/pkg/errors"
"github.com/brocaar/chirpstack-network-server/v3/internal/storage"
"github.com/brocaar/lorawan"
)
func handleDeviceModeInd(ctx context.Context, ds *storage.DeviceSession, block storage.MACCommandBlock) ([]storage.MACCommandBlock, error) {
if len(block.MACCommands) != 1 {
return nil, errors.New("exactly 1 mac-command is expected")
}
pl, ok := block.MACCommands[0].Payload.(*lorawan.DeviceModeIndPayload)
if !ok {
return nil, fmt.Errorf("expected *lorawan.DeviceModeIntPayload, got: %T", block.MACCommands[0].Payload)
}
d, err := storage.GetDevice(ctx, storage.DB(), ds.DevEUI, false)
if err != nil {
return nil, errors.Wrap(err, "get device error")
}
switch pl.Class {
case lorawan.DeviceModeClassA:
d.Mode = storage.DeviceModeA
case lorawan.DeviceModeClassC:
d.Mode = storage.DeviceModeC
default:
return nil, fmt.Errorf("unexpected device mode: %s", pl.Class)
}
if err := storage.UpdateDevice(ctx, storage.DB(), &d); err != nil {
return nil, errors.Wrap(err, "update device error")
}
return []storage.MACCommandBlock{
{
CID: lorawan.DeviceModeConf,
MACCommands: []lorawan.MACCommand{
{
CID: lorawan.DeviceModeConf,
Payload: &lorawan.DeviceModeConfPayload{
Class: pl.Class,
},
},
},
},
}, nil
}