feature: baremetal tftp send customized files according to a file map (#13374)

Co-authored-by: Qiu Jian <qiujian@yunionyun.com>

pkg/baremetal/options/options.go

@@ -51,6 +51,8 @@ type BaremetalOptions struct {
 	StatusProbeIntervalSeconds int `help:"interval to probe baremetal status, default is 60 seconds" default:"60"`
 	LogFetchIntervalSeconds    int `help:"interval to fetch baremetal log, default is 900 seconds" default:"900"`
 	SendMetricsIntervalSeconds int `help:"interval to send baremetal metrics, default is 300 seconds" default:"300"`
+
+	TftpFileMap map[string]string `help:"map of filename to real file path for tftp"`
 }
 
 var (

pkg/baremetal/pxe/tftp.go

@@ -123,6 +123,9 @@ func (h *TFTPHandler) sendFile(filename string, _ net.Addr) (io.ReadCloser, int6
 }
 
 func (h *TFTPHandler) getFilePath(fileName string) string {
+	if path, ok := options.Options.TftpFileMap[fileName]; ok {
+		return path
+	}
 	return filepath.Join(h.RootDir, fileName)
 }