Example #1
0
// subscribe all websocket clients to stream data
// eg subscribe;3;stdout
func wseventSubscribe(s *server, options string) error {
	args := strings.Split(options, ";")
	if len(args) != 2 {
		return errors.New("subscribe requires 2 args")
	}
	idstr := args[0]
	streamname := args[1]
	c, err := getCmd(s, idstr)
	if err != nil {
		return err
	}
	var stream liblush.OutStream
	switch streamname {
	case "stdout":
		stream = c.Stdout()
	case "stderr":
		stream = c.Stderr()
	default:
		return errors.New("unknown stream: " + streamname)
	}
	// proxy stream data
	w := newPrefixedWriter(&s.ctrlclients, []byte("stream;"+idstr+";"+streamname+";"))
	// do not close websocket stream when command exits
	wc := newNopWriteCloser(w)
	stream.Peeker().AddWriter(wc)
	return nil
}
Example #2
0
func handleWsStream(ctx *web.Context, idstr, streamname string) error {
	id, _ := liblush.ParseCmdId(idstr)
	s := ctx.User.(*server)
	c := s.session.GetCommand(id)
	if c == nil {
		return web.WebError{404, "no such command: " + idstr}
	}
	var stream liblush.OutStream
	switch streamname {
	case "stdout":
		stream = c.Stdout()
	case "stderr":
		stream = c.Stderr()
	default:
		return web.WebError{400, "No such stream: " + streamname}
	}
	stream.Peeker().AddWriter(ctx.WebsockConn)
	buf := make([]byte, 1)
	ctx.WebsockConn.Read(buf)
	return nil
}