Zabbix

/*

** Zabbix

** Copyright (C) 2001-2023 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 redis

​

import (

    "encoding/json"

    "fmt"

    "strings"

​

    "git.zabbix.com/ap/plugin-support/zbxerr"

    "github.com/mediocregopher/radix/v3"

)

​

const globChars = "*?[]!"

​

// configHandler gets an output of 'CONFIG GET [pattern]' command and returns it in JSON format or as a single-value.

func configHandler(conn redisClient, params map[string]string) (interface{}, error) {

    var res map[string]string

​

    if err := conn.Query(radix.Cmd(&res, "CONFIG", "GET", params["Pattern"])); err != nil {

        return nil, zbxerr.ErrorCannotFetchData.Wrap(err)

    }

​

    if len(res) == 0 {

        return nil, fmt.Errorf("no config parameter found for pattern %q", params["Pattern"])

    }

​

    if strings.ContainsAny(params["Pattern"], globChars) {

        jsonRes, err := json.Marshal(res)

        if err != nil {

            return nil, zbxerr.ErrorCannotMarshalJSON.Wrap(err)

        }

​

        return string(jsonRes), nil

    }

​

    return res[strings.ToLower(params["Pattern"])], nil

}