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 mysql

​

import (

    "context"

    "crypto/tls"

    "database/sql"

    "fmt"

    "strings"

    "sync"

    "time"

​

    "github.com/go-sql-driver/mysql"

    "github.com/omeid/go-yarn"

    "golang.zabbix.com/sdk/log"

    "golang.zabbix.com/sdk/tlsconfig"

    "golang.zabbix.com/sdk/uri"

    "golang.zabbix.com/sdk/zbxerr"

)

​

const (

    // connType

    disable    = "disabled"

    require    = "required"

    verifyCa   = "verify_ca"

    verifyFull = "verify_full"

)

​

type MyClient interface {

    Query(ctx context.Context, query string, args ...interface{}) (rows *sql.Rows, err error)

    QueryByName(ctx context.Context, queryName string, args ...interface{}) (rows *sql.Rows, err error)

    QueryRow(ctx context.Context, query string, args ...interface{}) (row *sql.Row, err error)

}

​

type MyConn struct {

    client           *sql.DB

    lastAccessTime   time.Time

    lastAccessTimeMu sync.Mutex

    queryStorage     *yarn.Yarn

}

​

// ConnManager is thread-safe structure for manage connections.

type ConnManager struct {

    connectionsMu  sync.Mutex

    connections    map[connKey]*MyConn

    keepAlive      time.Duration

    connectTimeout time.Duration

    callTimeout    time.Duration

    Destroy        context.CancelFunc

    queryStorage   yarn.Yarn