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Add pluggable codec support

This commit is contained in:
Asim
2015-11-25 19:50:05 +00:00
parent 04e07f4b39
commit 12a1e1eeda
8 changed files with 248 additions and 64 deletions

View File

@@ -2,12 +2,9 @@ package client
import (
"bytes"
"fmt"
"github.com/micro/go-micro/transport"
rpc "github.com/youtube/vitess/go/rpcplus"
js "github.com/youtube/vitess/go/rpcplus/jsonrpc"
pb "github.com/youtube/vitess/go/rpcplus/pbrpc"
)
type rpcPlusCodec struct {
@@ -37,50 +34,33 @@ func (rwc *readWriteCloser) Close() error {
return nil
}
func newRpcPlusCodec(req *transport.Message, client transport.Client) *rpcPlusCodec {
func newRpcPlusCodec(req *transport.Message, client transport.Client, cf codecFunc) *rpcPlusCodec {
rwc := &readWriteCloser{
wbuf: bytes.NewBuffer(nil),
rbuf: bytes.NewBuffer(nil),
}
r := &rpcPlusCodec{
req: req,
buf: rwc,
client: client,
buf: &readWriteCloser{
wbuf: bytes.NewBuffer(nil),
rbuf: bytes.NewBuffer(nil),
},
codec: cf(rwc),
req: req,
}
switch req.Header["Content-Type"] {
case "application/octet-stream":
r.codec = pb.NewClientCodec(r.buf)
case "application/json":
r.codec = js.NewClientCodec(r.buf)
}
return r
}
func (c *rpcPlusCodec) WriteRequest(req *rpc.Request, body interface{}) error {
if c.codec == nil {
return fmt.Errorf("unsupported request type: %s", c.req.Header["Content-Type"])
}
if err := c.codec.WriteRequest(req, body); err != nil {
return err
}
c.req.Body = c.buf.wbuf.Bytes()
return c.client.Send(c.req)
}
func (c *rpcPlusCodec) ReadResponseHeader(r *rpc.Response) error {
var m transport.Message
if err := c.client.Recv(&m); err != nil {
return err
}
if c.codec == nil {
return fmt.Errorf("%s", string(m.Body))
}
c.buf.rbuf.Reset()
c.buf.rbuf.Write(m.Body)
return c.codec.ReadResponseHeader(r)