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/*
** Zabbix
** Copyright (C) 2001-2021 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"
"github.com/mediocregopher/radix/v3"
"zabbix.com/pkg/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
}
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