micro/server/grpc/codec.go

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2019-06-03 18:44:43 +01:00
package grpc
import (
"encoding/json"
"fmt"
"github.com/golang/protobuf/proto"
"github.com/micro/go-micro/codec"
"github.com/micro/go-micro/codec/jsonrpc"
"github.com/micro/go-micro/codec/protorpc"
"google.golang.org/grpc/encoding"
)
type jsonCodec struct{}
type bytesCodec struct{}
type protoCodec struct{}
var (
defaultGRPCCodecs = map[string]encoding.Codec{
"application/json": jsonCodec{},
"application/proto": protoCodec{},
"application/protobuf": protoCodec{},
"application/octet-stream": protoCodec{},
"application/grpc": protoCodec{},
"application/grpc+json": jsonCodec{},
"application/grpc+proto": protoCodec{},
"application/grpc+bytes": bytesCodec{},
}
defaultRPCCodecs = map[string]codec.NewCodec{
"application/json": jsonrpc.NewCodec,
"application/json-rpc": jsonrpc.NewCodec,
"application/protobuf": protorpc.NewCodec,
"application/proto-rpc": protorpc.NewCodec,
"application/octet-stream": protorpc.NewCodec,
}
)
func (protoCodec) Marshal(v interface{}) ([]byte, error) {
return proto.Marshal(v.(proto.Message))
}
func (protoCodec) Unmarshal(data []byte, v interface{}) error {
return proto.Unmarshal(data, v.(proto.Message))
}
func (protoCodec) Name() string {
return "proto"
}
func (jsonCodec) Marshal(v interface{}) ([]byte, error) {
return json.Marshal(v)
}
func (jsonCodec) Unmarshal(data []byte, v interface{}) error {
return json.Unmarshal(data, v)
}
func (jsonCodec) Name() string {
return "json"
}
func (bytesCodec) Marshal(v interface{}) ([]byte, error) {
b, ok := v.(*[]byte)
if !ok {
return nil, fmt.Errorf("failed to marshal: %v is not type of *[]byte", v)
}
return *b, nil
}
func (bytesCodec) Unmarshal(data []byte, v interface{}) error {
b, ok := v.(*[]byte)
if !ok {
return fmt.Errorf("failed to unmarshal: %v is not type of *[]byte", v)
}
*b = data
return nil
}
func (bytesCodec) Name() string {
return "bytes"
}