// Write the opaque metadata blobs (by name).
// Each blob in the metadata map is written to a file with the corresponding
// name. Likewise, when we read it back (on restart) we populate the map
// accordingly.
func writeMetadata(ctx context.Context, ds *datastore.Helper, dir string, meta map[string][]byte) error {
// XXX this should be done via disklib so this meta follows the disk in
// case of motion.
if meta != nil && len(meta) != 0 {
for name, value := range meta {
r := bytes.NewReader(value)
pth := path.Join(dir, name)
log.Infof("Writing metadata %s", pth)
if err := ds.Upload(ctx, r, pth); err != nil {
return err
}
}
} else {
if _, err := ds.Mkdir(ctx, false, dir); err != nil {
return err
}
}
return nil
}
