micro/server/rpc_codec.go

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package server
import (
"bytes"
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"github.com/micro/go-micro/transport"
rpc "github.com/youtube/vitess/go/rpcplus"
)
type rpcPlusCodec struct {
socket transport.Socket
codec rpc.ServerCodec
req *transport.Message
buf *readWriteCloser
}
type readWriteCloser struct {
wbuf *bytes.Buffer
rbuf *bytes.Buffer
}
func (rwc *readWriteCloser) Read(p []byte) (n int, err error) {
return rwc.rbuf.Read(p)
}
func (rwc *readWriteCloser) Write(p []byte) (n int, err error) {
return rwc.wbuf.Write(p)
}
func (rwc *readWriteCloser) Close() error {
rwc.rbuf.Reset()
rwc.wbuf.Reset()
return nil
}
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func newRpcPlusCodec(req *transport.Message, socket transport.Socket, cf codecFunc) rpc.ServerCodec {
rwc := &readWriteCloser{
rbuf: bytes.NewBuffer(req.Body),
wbuf: bytes.NewBuffer(nil),
}
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r := &rpcPlusCodec{
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buf: rwc,
codec: cf(rwc),
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req: req,
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socket: socket,
}
return r
}
func (c *rpcPlusCodec) ReadRequestHeader(r *rpc.Request) error {
return c.codec.ReadRequestHeader(r)
}
func (c *rpcPlusCodec) ReadRequestBody(r interface{}) error {
return c.codec.ReadRequestBody(r)
}
func (c *rpcPlusCodec) WriteResponse(r *rpc.Response, body interface{}, last bool) error {
c.buf.wbuf.Reset()
if err := c.codec.WriteResponse(r, body, last); err != nil {
return err
}
return c.socket.Send(&transport.Message{
Header: map[string]string{"Content-Type": c.req.Header["Content-Type"]},
Body: c.buf.wbuf.Bytes(),
})
}
func (c *rpcPlusCodec) Close() error {
c.buf.Close()
return c.socket.Close()
}