codec.go

// Copyright 2021-2023 The Connect Authors
//
// 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 codec

import (
	"encoding/json"

	"google.golang.org/grpc/encoding"
	"google.golang.org/protobuf/encoding/protojson"
	"google.golang.org/protobuf/proto"
)

func init() {
	encoding.RegisterCodec(Codec{})
}

type Codec struct{}

func (Codec) Name() string {
	return "json"
}

func (codec Codec) Marshal(message interface{}) (out []byte, err error) {
	if protoMessage, ok := message.(proto.Message); ok {
		return protojson.Marshal(protoMessage)
	}
	return json.Marshal(message)
}

func (codec Codec) Unmarshal(data []byte, message interface{}) (err error) {
	if protoMessage, ok := message.(proto.Message); ok {
		return protojson.Unmarshal(data, protoMessage)
	}
	return json.Unmarshal(data, message)
}