| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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 grpc |
| |
| import ( |
| "bytes" |
| "encoding/json" |
| ) |
| |
| import ( |
| "github.com/golang/protobuf/jsonpb" |
| "github.com/golang/protobuf/proto" |
| "google.golang.org/grpc/encoding" |
| ) |
| |
| const ( |
| codecJson = "json" |
| codecProto = "proto" |
| ) |
| |
| func init() { |
| encoding.RegisterCodec(grpcJson{ |
| Marshaler: jsonpb.Marshaler{ |
| EmitDefaults: true, |
| OrigName: true, |
| }, |
| }) |
| } |
| |
| type grpcJson struct { |
| jsonpb.Marshaler |
| jsonpb.Unmarshaler |
| } |
| |
| // Name implements grpc encoding package Codec interface method, |
| // returns the name of the Codec implementation. |
| func (_ grpcJson) Name() string { |
| return codecJson |
| } |
| |
| // Marshal implements grpc encoding package Codec interface method,returns the wire format of v. |
| func (j grpcJson) Marshal(v interface{}) (out []byte, err error) { |
| if pm, ok := v.(proto.Message); ok { |
| b := new(bytes.Buffer) |
| err := j.Marshaler.Marshal(b, pm) |
| if err != nil { |
| return nil, err |
| } |
| return b.Bytes(), nil |
| } |
| return json.Marshal(v) |
| } |
| |
| // Unmarshal implements grpc encoding package Codec interface method,Unmarshal parses the wire format into v. |
| func (j grpcJson) Unmarshal(data []byte, v interface{}) (err error) { |
| if pm, ok := v.(proto.Message); ok { |
| b := bytes.NewBuffer(data) |
| return j.Unmarshaler.Unmarshal(b, pm) |
| } |
| return json.Unmarshal(data, v) |
| } |