88 lines
1.6 KiB
Go
88 lines
1.6 KiB
Go
package jsonrpc
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import (
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"encoding/json"
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"fmt"
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"io"
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"github.com/micro/go-micro/codec"
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)
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type serverCodec struct {
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dec *json.Decoder // for reading JSON values
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enc *json.Encoder // for writing JSON values
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c io.Closer
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// temporary work space
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req serverRequest
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resp serverResponse
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}
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type serverRequest struct {
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Method string `json:"method"`
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Params *json.RawMessage `json:"params"`
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ID interface{} `json:"id"`
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}
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type serverResponse struct {
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ID interface{} `json:"id"`
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Result interface{} `json:"result"`
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Error interface{} `json:"error"`
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}
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func newServerCodec(conn io.ReadWriteCloser) *serverCodec {
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return &serverCodec{
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dec: json.NewDecoder(conn),
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enc: json.NewEncoder(conn),
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c: conn,
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}
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}
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func (r *serverRequest) reset() {
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r.Method = ""
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if r.Params != nil {
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*r.Params = (*r.Params)[0:0]
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}
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if r.ID != nil {
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r.ID = nil
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}
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}
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func (c *serverCodec) ReadHeader(m *codec.Message) error {
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c.req.reset()
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if err := c.dec.Decode(&c.req); err != nil {
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return err
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}
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m.Endpoint = c.req.Method
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m.Id = fmt.Sprintf("%v", c.req.ID)
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c.req.ID = nil
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return nil
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}
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func (c *serverCodec) ReadBody(x interface{}) error {
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if x == nil {
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return nil
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}
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var params [1]interface{}
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params[0] = x
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return json.Unmarshal(*c.req.Params, ¶ms)
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}
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var null = json.RawMessage([]byte("null"))
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func (c *serverCodec) Write(m *codec.Message, x interface{}) error {
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var resp serverResponse
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resp.ID = m.Id
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resp.Result = x
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if m.Error == "" {
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resp.Error = nil
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} else {
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resp.Error = m.Error
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}
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return c.enc.Encode(resp)
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}
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func (c *serverCodec) Close() error {
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return c.c.Close()
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}
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