mirror of
https://github.com/ergochat/ergo.git
synced 2024-12-29 14:12:38 +01:00
108 lines
3.2 KiB
Go
108 lines
3.2 KiB
Go
// Copyright 2012 The Go-MySQL-Driver Authors. All rights reserved.
|
|
//
|
|
// This Source Code Form is subject to the terms of the Mozilla Public
|
|
// License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
// You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
// Package mysql provides a MySQL driver for Go's database/sql package.
|
|
//
|
|
// The driver should be used via the database/sql package:
|
|
//
|
|
// import "database/sql"
|
|
// import _ "github.com/go-sql-driver/mysql"
|
|
//
|
|
// db, err := sql.Open("mysql", "user:password@/dbname")
|
|
//
|
|
// See https://github.com/go-sql-driver/mysql#usage for details
|
|
package mysql
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"database/sql/driver"
|
|
"net"
|
|
"sync"
|
|
)
|
|
|
|
// MySQLDriver is exported to make the driver directly accessible.
|
|
// In general the driver is used via the database/sql package.
|
|
type MySQLDriver struct{}
|
|
|
|
// DialFunc is a function which can be used to establish the network connection.
|
|
// Custom dial functions must be registered with RegisterDial
|
|
//
|
|
// Deprecated: users should register a DialContextFunc instead
|
|
type DialFunc func(addr string) (net.Conn, error)
|
|
|
|
// DialContextFunc is a function which can be used to establish the network connection.
|
|
// Custom dial functions must be registered with RegisterDialContext
|
|
type DialContextFunc func(ctx context.Context, addr string) (net.Conn, error)
|
|
|
|
var (
|
|
dialsLock sync.RWMutex
|
|
dials map[string]DialContextFunc
|
|
)
|
|
|
|
// RegisterDialContext registers a custom dial function. It can then be used by the
|
|
// network address mynet(addr), where mynet is the registered new network.
|
|
// The current context for the connection and its address is passed to the dial function.
|
|
func RegisterDialContext(net string, dial DialContextFunc) {
|
|
dialsLock.Lock()
|
|
defer dialsLock.Unlock()
|
|
if dials == nil {
|
|
dials = make(map[string]DialContextFunc)
|
|
}
|
|
dials[net] = dial
|
|
}
|
|
|
|
// RegisterDial registers a custom dial function. It can then be used by the
|
|
// network address mynet(addr), where mynet is the registered new network.
|
|
// addr is passed as a parameter to the dial function.
|
|
//
|
|
// Deprecated: users should call RegisterDialContext instead
|
|
func RegisterDial(network string, dial DialFunc) {
|
|
RegisterDialContext(network, func(_ context.Context, addr string) (net.Conn, error) {
|
|
return dial(addr)
|
|
})
|
|
}
|
|
|
|
// Open new Connection.
|
|
// See https://github.com/go-sql-driver/mysql#dsn-data-source-name for how
|
|
// the DSN string is formatted
|
|
func (d MySQLDriver) Open(dsn string) (driver.Conn, error) {
|
|
cfg, err := ParseDSN(dsn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
c := &connector{
|
|
cfg: cfg,
|
|
}
|
|
return c.Connect(context.Background())
|
|
}
|
|
|
|
func init() {
|
|
sql.Register("mysql", &MySQLDriver{})
|
|
}
|
|
|
|
// NewConnector returns new driver.Connector.
|
|
func NewConnector(cfg *Config) (driver.Connector, error) {
|
|
cfg = cfg.Clone()
|
|
// normalize the contents of cfg so calls to NewConnector have the same
|
|
// behavior as MySQLDriver.OpenConnector
|
|
if err := cfg.normalize(); err != nil {
|
|
return nil, err
|
|
}
|
|
return &connector{cfg: cfg}, nil
|
|
}
|
|
|
|
// OpenConnector implements driver.DriverContext.
|
|
func (d MySQLDriver) OpenConnector(dsn string) (driver.Connector, error) {
|
|
cfg, err := ParseDSN(dsn)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &connector{
|
|
cfg: cfg,
|
|
}, nil
|
|
}
|