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 Affero General Public License as published by the Free Software Foundation, version 3.

**

** 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

package redis

​

import (

    "encoding/json"

    "fmt"

    "strings"

​

    "github.com/mediocregopher/radix/v3"

    "golang.zabbix.com/sdk/zbxerr"

)

​

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

}