/
server_codec.go
70 lines (60 loc) · 1.93 KB
/
server_codec.go
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// Licensed to 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. Apache Software Foundation (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 (
"fmt"
"google.golang.org/grpc/encoding"
"google.golang.org/protobuf/proto"
)
func init() {
encoding.RegisterCodec(codec{})
}
// OriginalData is keep binary Content
type OriginalData struct {
Content []byte
}
func NewOriginalData(data []byte) *OriginalData {
return &OriginalData{Content: data}
}
// codec is overwritten the original "proto" codec, and support using OriginalData to skip data en/decoding.
type codec struct{}
func (codec) Marshal(v interface{}) ([]byte, error) {
vv, ok := v.(proto.Message)
if !ok {
original, ok := v.(*OriginalData)
if !ok {
return nil, fmt.Errorf("failed to marshal, message is %T, want proto.Message or grpc.OriginalData", v)
}
return original.Content, nil
}
return proto.Marshal(vv)
}
func (codec) Unmarshal(data []byte, v interface{}) error {
vv, ok := v.(proto.Message)
if !ok {
original, ok := v.(*OriginalData)
if !ok {
return fmt.Errorf("failed to unmarshal, message is %T, want proto.Message or grpc.OriginalData", v)
}
original.Content = data
return nil
}
return proto.Unmarshal(data, vv)
}
func (codec) Name() string {
return "proto"
}