Zabbix

/*

** Zabbix

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software; you can redistribute it and/or modify

** it under the terms of the GNU General Public License as published by

** the Free Software Foundation; either version 2 of the License, or

** (at your option) any later version.

**

** This program is distributed in the hope that it will be useful,

** but WITHOUT ANY WARRANTY; without even the implied warranty of

** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

** GNU General Public License for more details.

**

** You should have received a copy of the GNU General Public License

** along with this program; if not, write to the Free Software

** Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

**/

​

package swap

​

import (

    "errors"

    "fmt"

​

    "golang.zabbix.com/sdk/plugin"

)

​

var impl Plugin

​

// Plugin -

type Plugin struct {

    plugin.Base

}

​

func (p *Plugin) Export(key string, params []string, ctx plugin.ContextProvider) (result interface{}, err error) {

    switch key {

    case "system.swap.size":

        if len(params) > 2 {

            return nil, errors.New("Too many parameters.")

        }

​

        if len(params) > 0 && params[0] != "" && params[0] != "all" {

            return nil, errors.New("Invalid first parameter.")

        }

​

        total, avail, err := getSwapSize()

        if err != nil {

            return nil, fmt.Errorf("Failed to get swap data: %s", err.Error())

        }

​

        if avail > total {

            avail = total

        }

​

        var mode string

        if len(params) == 2 && params[1] != "" {

            mode = params[1]

        }

​

        switch mode {

        case "total":

            return total, nil

        case "", "free":

            return avail, nil

        case "used":

            return total - avail, nil

        case "pfree":

            if total == 0 {

                return 100.0, nil

            }

            return float64(avail) / float64(total) * 100, nil

        case "pused":

            if total == 0 {

                return 0.0, nil

            }

            return float64(total-avail) / float64(total) * 100, nil

        default:

            return nil, errors.New("Invalid second parameter.")

        }

    case "system.swap.in", "system.swap.out":

        if len(params) > 2 {

            return nil, errors.New("Too many parameters.")

        }

​

        var swapdev string

        if len(params) > 0 {

            swapdev = params[0]

        }

​

        var io, sect, pag uint64