gitee.com/liuxuezhan/go-micro-v1.18.0@v1.0.0/codec/json/json.go (about)

     1  // Package json provides a json codec
     2  package json
     3  
     4  import (
     5  	"encoding/json"
     6  	"io"
     7  
     8  	"github.com/golang/protobuf/jsonpb"
     9  	"github.com/golang/protobuf/proto"
    10  	"gitee.com/liuxuezhan/go-micro-v1.18.0/codec"
    11  )
    12  
    13  type Codec struct {
    14  	Conn    io.ReadWriteCloser
    15  	Encoder *json.Encoder
    16  	Decoder *json.Decoder
    17  }
    18  
    19  func (c *Codec) ReadHeader(m *codec.Message, t codec.MessageType) error {
    20  	return nil
    21  }
    22  
    23  func (c *Codec) ReadBody(b interface{}) error {
    24  	if b == nil {
    25  		return nil
    26  	}
    27  	if pb, ok := b.(proto.Message); ok {
    28  		return jsonpb.UnmarshalNext(c.Decoder, pb)
    29  	}
    30  	return c.Decoder.Decode(b)
    31  }
    32  
    33  func (c *Codec) Write(m *codec.Message, b interface{}) error {
    34  	if b == nil {
    35  		return nil
    36  	}
    37  	return c.Encoder.Encode(b)
    38  }
    39  
    40  func (c *Codec) Close() error {
    41  	return c.Conn.Close()
    42  }
    43  
    44  func (c *Codec) String() string {
    45  	return "json"
    46  }
    47  
    48  func NewCodec(c io.ReadWriteCloser) codec.Codec {
    49  	return &Codec{
    50  		Conn:    c,
    51  		Decoder: json.NewDecoder(c),
    52  		Encoder: json.NewEncoder(c),
    53  	}
    54  }