blog_20200227_tabwriter_cobra.go

rootCmd = &cobra.Command{
    Use:   "manualrun",
    Short: "trigger a manual run",
    Long: func() string {
        var b bytes.Buffer
	wb := bufio.NewWriter(&b)
	h := tabwriter.NewWriter(wb, 0, 10, 5, ' ', 0)
        fmt.Fprintf(h, "Trigger a manual run, among other tools.\n\n")
        fmt.Fprintf(h, "Format for the --input flag:\n")
        fmt.Fprintf(h, "  payer:<id>[/link1,link2,...]\trun manual calculation at payer level, optional acct list is for log filtering\n")
        fmt.Fprintf(h, "  msp:<id>\trun manual calculation at MSP level\n")
        fmt.Fprintf(h, "  link:<id>\trun manual calculation at link acct level\n")
        fmt.Fprintf(h, "  detectri:<msp|payer>[:id]\trun RI detection manually\n")
        fmt.Fprintf(h, "  detectsp:<msp|payer>[:id]\trun SavingsPlan detection manually\n")
        fmt.Fprintf(h, "  curlinks:<msp|payer>[:id]\tdetect actual customers from CUR, can use --detect-moved-payer flag\n")
        fmt.Fprintf(h, "  fees:<id>\tdetect fees for the input link id\n")
        fmt.Fprintf(h, "  detecttags:<id>\tdetect tags for the input payer id\n\n")
        fmt.Fprintf(h, "Notes:\n")
        fmt.Fprintf(h, "  * When triggering CUR (using trigger: input), it's recommended to use the --use-sns flag.\n\n")
        h.Flush()
        wb.Flush()
        return b.String()
    }(),
    RunE: func(cmd *cobra.Command, args []string) error {
        defer func(begin time.Time) {
            log.Println("duration:", time.Since(begin))
        }(time.Now())

        // redacted
        return nil
    },
}