103 lines
2.1 KiB
Go
103 lines
2.1 KiB
Go
package client
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import (
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"bytes"
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"github.com/micro/go-micro/codec"
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"github.com/micro/go-micro/codec/json"
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"github.com/micro/go-micro/codec/proto"
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"github.com/micro/go-micro/transport"
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rpc "github.com/youtube/vitess/go/rpcplus"
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)
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type rpcPlusCodec struct {
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client transport.Client
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codec codec.Codec
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req *transport.Message
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buf *readWriteCloser
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}
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type readWriteCloser struct {
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wbuf *bytes.Buffer
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rbuf *bytes.Buffer
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}
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var (
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defaultContentType = "application/octet-stream"
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defaultCodecs = map[string]codec.NewCodec{
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"application/json": json.NewCodec,
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"application/json-rpc": json.NewCodec,
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"application/protobuf": proto.NewCodec,
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"application/proto-rpc": proto.NewCodec,
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"application/octet-stream": proto.NewCodec,
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}
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)
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func (rwc *readWriteCloser) Read(p []byte) (n int, err error) {
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return rwc.rbuf.Read(p)
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}
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func (rwc *readWriteCloser) Write(p []byte) (n int, err error) {
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return rwc.wbuf.Write(p)
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}
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func (rwc *readWriteCloser) Close() error {
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rwc.rbuf.Reset()
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rwc.wbuf.Reset()
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return nil
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}
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func newRpcPlusCodec(req *transport.Message, client transport.Client, c codec.NewCodec) *rpcPlusCodec {
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rwc := &readWriteCloser{
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wbuf: bytes.NewBuffer(nil),
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rbuf: bytes.NewBuffer(nil),
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}
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r := &rpcPlusCodec{
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buf: rwc,
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client: client,
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codec: c(rwc),
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req: req,
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}
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return r
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}
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func (c *rpcPlusCodec) WriteRequest(req *rpc.Request, body interface{}) error {
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m := &codec.Message{
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Id: req.Seq,
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Method: req.ServiceMethod,
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Type: codec.Request,
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}
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if err := c.codec.Write(m, body); err != nil {
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return err
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}
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c.req.Body = c.buf.wbuf.Bytes()
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return c.client.Send(c.req)
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}
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func (c *rpcPlusCodec) ReadResponseHeader(r *rpc.Response) error {
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var m transport.Message
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if err := c.client.Recv(&m); err != nil {
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return err
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}
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c.buf.rbuf.Reset()
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c.buf.rbuf.Write(m.Body)
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var me codec.Message
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err := c.codec.ReadHeader(&me, codec.Response)
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r.ServiceMethod = me.Method
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r.Seq = me.Id
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r.Error = me.Error
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return err
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}
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func (c *rpcPlusCodec) ReadResponseBody(b interface{}) error {
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return c.codec.ReadBody(b)
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}
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func (c *rpcPlusCodec) Close() error {
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c.buf.Close()
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c.codec.Close()
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return c.client.Close()
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}
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