func (t *MetaObject) setFileMode() error {
if t.Mode == "" {
if !utils.IsFileExist(t.Dest) {
t.FileMode = 0644
} else {
fi, err := os.Stat(t.Dest)
if err != nil {
return err
}
t.FileMode = fi.Mode()
}
} else {
mode, err := strconv.ParseUint(t.Mode, 0, 32)
if err != nil {
return err
}
t.FileMode = os.FileMode(mode)
}
return nil
}
func (t *MetaObject) createConfigFile(data map[string]interface{}) error {
log.Debug("Using template " + t.Tmpl)
if !utils.IsFileExist(t.Tmpl) {
return errors.New("Missing meta file: " + t.Tmpl)
}
log.Debug("Compiling source template " + t.Tmpl)
tmpl, err := template.New(path.Base(t.Tmpl)).Funcs(t.funcMap).ParseFiles(t.Tmpl)
if err != nil {
return fmt.Errorf("Unable to process template file %s, %s", t.Tmpl, err)
}
// 创建临时文件
temp, err := ioutil.TempFile(filepath.Dir(t.Dest), "."+filepath.Base(t.Dest))
defer os.Remove(temp.Name())
defer temp.Close()
log.Debug("Temp path: ", temp.Name())
if err != nil {
return err
}
if err = tmpl.Execute(temp, nil); err != nil {
temp.Close()
os.Remove(temp.Name())
return err
}
os.Chmod(temp.Name(), t.FileMode)
log.Debug("Overwriting target config: ", t.Dest)
err = os.Rename(temp.Name(), t.Dest)
if err != nil {
log.Fatal("Rename ", temp.Name(), " to ", t.Dest, " failed")
return err
}
log.Info("Target config has been updated: ", t.Dest)
return nil
}