Zabbix

/*

** 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 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 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

    log            log.Logger

}

​

type connKey struct {

    uri        uri.URI

    rawUri     string

    tlsConnect string

    tlsCA      string

    tlsCert    string

    tlsKey     string

}

​

// Query wraps DB.QueryRowContext.

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

    rows, err = conn.client.QueryContext(ctx, query, args...)

​

    if ctxErr := ctx.Err(); ctxErr != nil {

        err = ctxErr

    }

​

    return

}

​