add json codec for grpc (#1908)

pull/1911/head
Tony Chen 3 years ago committed by GitHub
parent 558ef4ebae
commit fd2335ba38
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  1. 36
      transport/grpc/codec.go

@ -0,0 +1,36 @@
package grpc
import (
"fmt"
"github.com/go-kratos/kratos/v2/encoding/json"
"google.golang.org/grpc/encoding"
"google.golang.org/protobuf/proto"
)
func init() {
encoding.RegisterCodec(codec{})
}
// codec is a Codec implementation with protobuf. It is the default codec for gRPC.
type codec struct{}
func (codec) Marshal(v interface{}) ([]byte, error) {
vv, ok := v.(proto.Message)
if !ok {
return nil, fmt.Errorf("failed to marshal, message is %T, want proto.Message", v)
}
return json.MarshalOptions.Marshal(vv)
}
func (codec) Unmarshal(data []byte, v interface{}) error {
vv, ok := v.(proto.Message)
if !ok {
return fmt.Errorf("failed to unmarshal, message is %T, want proto.Message", v)
}
return json.UnmarshalOptions.Unmarshal(data, vv)
}
func (codec) Name() string {
return "json"
}
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