/
format_protobuf.go
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/
format_protobuf.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// 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 mqtt
import (
"context"
"github.com/gogo/protobuf/proto"
"go.thethings.network/lorawan-stack/v3/pkg/gatewayserver/io/mqtt/topics"
"go.thethings.network/lorawan-stack/v3/pkg/ttnpb"
)
type protobuf struct {
topics.Layout
}
func (protobuf) FromDownlink(down *ttnpb.DownlinkMessage, _ *ttnpb.GatewayIdentifiers) ([]byte, error) {
gwDown := &ttnpb.GatewayDown{
DownlinkMessage: down,
}
return proto.Marshal(gwDown)
}
func (protobuf) ToUplink(message []byte, _ *ttnpb.GatewayIdentifiers) (*ttnpb.UplinkMessage, error) {
uplink := &ttnpb.UplinkMessage{}
if err := proto.Unmarshal(message, uplink); err != nil {
return nil, err
}
return uplink, nil
}
func (protobuf) ToStatus(message []byte, _ *ttnpb.GatewayIdentifiers) (*ttnpb.GatewayStatus, error) {
status := &ttnpb.GatewayStatus{}
if err := proto.Unmarshal(message, status); err != nil {
return nil, err
}
return status, nil
}
func (protobuf) ToTxAck(message []byte, _ *ttnpb.GatewayIdentifiers) (*ttnpb.TxAcknowledgment, error) {
ack := &ttnpb.TxAcknowledgment{}
if err := proto.Unmarshal(message, ack); err != nil {
return nil, err
}
return ack, nil
}
// NewProtobuf returns a format that uses Protocol Buffers marshaling and unmarshaling.
func NewProtobuf(ctx context.Context) Format {
return &protobuf{
Layout: topics.New(ctx),
}
}