go检测状态 template

type systemStatus struct {
   Name   string
   Status string
}

type InitSystemStatus struct {
   Error       string
   ServiceList []systemStatus
}

func (n *InitSystemChecker) Output(status *InitSystemStatus) error {
   tpl, isOk, err := template.TryParse(`
Systemd Service Status
  Logger: journalctl -xeu SERVICE-NAME
  Error: {{ .Error }}
  {{ if .ServiceList -}}
  Init System List:
    {{- range  .ServiceList }}
    Name: {{.Name}} Status: {{.Status}}
    {{- end }}
  {{ end }}`)
   if err != nil || !isOk {
      if err != nil {
         logger.Error("failed to render system service checkers template. error: %s", err.Error())
         return err
      }
      return errors.New("convert system service template failed")
   }
   if err = tpl.Execute(os.Stdout, status); err != nil {
      return err
   }
   return nil
}