github.com/annwntech/go-micro/v2@v2.9.5/codec/proto/proto.go (about)

     1  // Package proto provides a proto codec
     2  package proto
     3  
     4  import (
     5  	"io"
     6  	"io/ioutil"
     7  
     8  	"github.com/golang/protobuf/proto"
     9  	"github.com/annwntech/go-micro/v2/codec"
    10  )
    11  
    12  type Codec struct {
    13  	Conn io.ReadWriteCloser
    14  }
    15  
    16  func (c *Codec) ReadHeader(m *codec.Message, t codec.MessageType) error {
    17  	return nil
    18  }
    19  
    20  func (c *Codec) ReadBody(b interface{}) error {
    21  	if b == nil {
    22  		return nil
    23  	}
    24  	buf, err := ioutil.ReadAll(c.Conn)
    25  	if err != nil {
    26  		return err
    27  	}
    28  	m, ok := b.(proto.Message)
    29  	if !ok {
    30  		return codec.ErrInvalidMessage
    31  	}
    32  	return proto.Unmarshal(buf, m)
    33  }
    34  
    35  func (c *Codec) Write(m *codec.Message, b interface{}) error {
    36  	p, ok := b.(proto.Message)
    37  	if !ok {
    38  		return codec.ErrInvalidMessage
    39  	}
    40  	buf, err := proto.Marshal(p)
    41  	if err != nil {
    42  		return err
    43  	}
    44  	_, err = c.Conn.Write(buf)
    45  	return err
    46  }
    47  
    48  func (c *Codec) Close() error {
    49  	return c.Conn.Close()
    50  }
    51  
    52  func (c *Codec) String() string {
    53  	return "proto"
    54  }
    55  
    56  func NewCodec(c io.ReadWriteCloser) codec.Codec {
    57  	return &Codec{
    58  		Conn: c,
    59  	}
    60  }