137 lines
2.0 KiB
Go
137 lines
2.0 KiB
Go
package codec
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import (
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"encoding/json"
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"io"
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"io/ioutil"
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)
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type noopCodec struct {
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}
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// Frame gives us the ability to define raw data to send over the pipes
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type Frame struct {
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Data []byte
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}
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func (c *noopCodec) ReadHeader(conn io.Reader, m *Message, t MessageType) error {
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return nil
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}
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func (c *noopCodec) ReadBody(conn io.Reader, b interface{}) error {
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// read bytes
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buf, err := ioutil.ReadAll(conn)
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if err != nil {
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return err
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}
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if b == nil {
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return nil
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}
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switch v := b.(type) {
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case string:
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v = string(buf)
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case *string:
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*v = string(buf)
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case []byte:
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v = buf
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case *[]byte:
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*v = buf
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case *Frame:
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v.Data = buf
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default:
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return json.Unmarshal(buf, v)
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}
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return nil
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}
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func (c *noopCodec) Write(conn io.Writer, m *Message, b interface{}) error {
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if b == nil {
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return nil
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}
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var v []byte
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switch vb := b.(type) {
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case *Frame:
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v = vb.Data
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case string:
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v = []byte(vb)
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case *string:
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v = []byte(*vb)
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case *[]byte:
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v = *vb
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case []byte:
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v = vb
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default:
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var err error
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v, err = json.Marshal(vb)
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if err != nil {
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return err
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}
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}
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_, err := conn.Write(v)
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return err
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}
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func (c *noopCodec) String() string {
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return "noop"
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}
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// NewCodec returns new noop codec
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func NewCodec() Codec {
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return &noopCodec{}
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}
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func (c *noopCodec) Marshal(v interface{}) ([]byte, error) {
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if v == nil {
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return nil, nil
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}
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switch ve := v.(type) {
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case string:
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return []byte(ve), nil
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case *string:
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return []byte(*ve), nil
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case *[]byte:
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return *ve, nil
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case []byte:
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return ve, nil
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case *Frame:
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return ve.Data, nil
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case *Message:
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return ve.Body, nil
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}
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return json.Marshal(v)
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}
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func (c *noopCodec) Unmarshal(d []byte, v interface{}) error {
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if v == nil {
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return nil
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}
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switch ve := v.(type) {
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case string:
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ve = string(d)
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return nil
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case *string:
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*ve = string(d)
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return nil
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case []byte:
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ve = d
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return nil
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case *[]byte:
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*ve = d
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return nil
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case *Frame:
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ve.Data = d
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return nil
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case *Message:
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ve.Body = d
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return nil
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}
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return json.Unmarshal(d, v)
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}
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