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 memcached

​

import (

    "context"

    "sync"

    "time"

​

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

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

​

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

    "github.com/memcachier/mc/v3"

)

​

const poolSize = 1

​

type MCClient interface {

    Stats(key string) (mc.McStats, error)

    NoOp() error

}

​

type MCConn struct {

    client         mc.Client

    lastTimeAccess time.Time

}

​

// stubConn for testing

type stubConn struct {

    NoOpFunc  func() error

    StatsFunc func(key string) (mc.McStats, error)

}

​

func (c *stubConn) Stats(key string) (mc.McStats, error) {

    return c.StatsFunc(key)

}

​

func (c *stubConn) NoOp() error {

    return c.NoOpFunc()

}

​

// Stats wraps the mc.Client.StatsWithKey function.

func (conn *MCConn) Stats(key string) (stats mc.McStats, err error) {

    res, err := conn.client.StatsWithKey(key)

    if err != nil {