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Published: Apr 20, 2018 License: Apache-2.0, MPL-2.0 Imports: 23 Imported by: 0




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const (
	// CapabilityString is a string
	CapabilityString capabilityType = iota
	// CapabilityBool is a boolean


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var (
	ErrInvalidConn       = errors.New("Invalid Connection")
	ErrMalformPkt        = errors.New("Malformed Packet")
	ErrNoTLS             = errors.New("TLS encryption requested but server does not support TLS")
	ErrOldPassword       = errors.New("This user requires old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also")
	ErrCleartextPassword = errors.New("This user requires clear text authentication. If you still want to use it, please add 'allowCleartextPasswords=1' to your DSN.")
	ErrUnknownPlugin     = errors.New("The authentication plugin is not supported.")
	ErrOldProtocol       = errors.New("MySQL-Server does not support required Protocol 41+")
	ErrPktSync           = errors.New("Commands out of sync. You can't run this command now")
	ErrPktSyncMul        = errors.New("Commands out of sync. Did you run multiple statements at once?")
	ErrPktTooLarge       = errors.New("Packet for query is too large. You can change this value on the server by adjusting the 'max_allowed_packet' variable.")
	ErrBusyBuffer        = errors.New("Busy buffer")

Various errors the driver might return. Can change between driver versions.


func DeregisterTLSConfig

func DeregisterTLSConfig(key string)

DeregisterTLSConfig removes the tls.Config associated with key.

func NewXconfigFromConfig

func NewXconfigFromConfig(cfg *config) *xconfig

func RegisterDial

func RegisterDial(net string, dial DialFunc)

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.

func RegisterTLSConfig

func RegisterTLSConfig(key string, config *tls.Config) error

RegisterTLSConfig registers a custom tls.Config to be used with sql.Open. Use the key as a value in the DSN where tls=value.

rootCertPool := x509.NewCertPool()
pem, err := ioutil.ReadFile("/path/ca-cert.pem")
if err != nil {
if ok := rootCertPool.AppendCertsFromPEM(pem); !ok {
    log.Fatal("Failed to append PEM.")
clientCert := make([]tls.Certificate, 0, 1)
certs, err := tls.LoadX509KeyPair("/path/client-cert.pem", "/path/client-key.pem")
if err != nil {
clientCert = append(clientCert, certs)
mysql.RegisterTLSConfig("custom", &tls.Config{
    RootCAs: rootCertPool,
    Certificates: clientCert,
db, err := sql.Open("mysql", "user@tcp(localhost:3306)/test?tls=custom")

func SetLogger

func SetLogger(logger Logger) error

SetLogger is used to set the logger for critical errors. The initial logger is os.Stderr.


type DialFunc

type DialFunc func(addr string) (net.Conn, error)

DialFunc is a function which can be used to establish the network connection. Custom dial functions must be registered with RegisterDial

type Logger

type Logger interface {
	Print(v ...interface{})

Logger is used to log critical error messages.

type MySQL41

type MySQL41 struct {
	// contains filtered or unexported fields

MySQL41 manages the MySQL41 authentication protocol

func NewMySQL41

func NewMySQL41(dbname, username, password string) *MySQL41

NewMySQL41 returns a pointer to an initialised MySQL41 struct

func (*MySQL41) GetInitialAuthData

func (p *MySQL41) GetInitialAuthData() []byte

GetInitialAuthData returns any initial authentication data

func (*MySQL41) GetNextAuthData

func (p *MySQL41) GetNextAuthData(serverData []byte) ([]byte, error)

GetNextAuthData returns data db + name + encrypted hash

func (*MySQL41) Name

func (p *MySQL41) Name() string

Name returns the name of the authentication method

type MySQLWarning

type MySQLWarning struct {
	Level   string
	Code    string
	Message string

MySQLWarning is an error type which represents a single MySQL warning. Warnings are returned in groups only. See MySQLWarnings

type MySQLWarnings

type MySQLWarnings []MySQLWarning

MySQLWarnings is an error type which represents a group of one or more MySQL warnings

func (MySQLWarnings) Error

func (mws MySQLWarnings) Error() string

type NullTime

type NullTime struct {
	Time  time.Time
	Valid bool // Valid is true if Time is not NULL

NullTime represents a time.Time that may be NULL. NullTime implements the Scanner interface so it can be used as a scan destination:

var nt NullTime
err := db.QueryRow("SELECT time FROM foo WHERE id=?", id).Scan(&nt)
if nt.Valid {
   // use nt.Time
} else {
   // NULL value

This NullTime implementation is not driver-specific

func (*NullTime) Scan

func (nt *NullTime) Scan(value interface{}) (err error)

Scan implements the Scanner interface. The value type must be time.Time or string / []byte (formatted time-string), otherwise Scan fails.

func (NullTime) Value

func (nt NullTime) Value() (driver.Value, error)

Value implements the driver Valuer interface.

type ServerCapabilities

type ServerCapabilities map[string]Values

ServerCapabilities is a named map of capability values

func NewServerCapabilities

func NewServerCapabilities() ServerCapabilities

NewServerCapabilities returns a structure containing the named capabilities of the server

func (ServerCapabilities) AddArrayString

func (sc ServerCapabilities) AddArrayString(name string, values []string) error

AddArrayString adds the given array of strings to the named capability

func (ServerCapabilities) AddScalarBool

func (sc ServerCapabilities) AddScalarBool(name string, value bool) error

AddScalarBool adds the given boolean value to the named capability

func (ServerCapabilities) AddScalarString

func (sc ServerCapabilities) AddScalarString(name string, value string) error

AddScalarString adds the given string value to the named capability

func (ServerCapabilities) Exists

func (sc ServerCapabilities) Exists(name string) bool

Exists returns true if the named capability exists

func (ServerCapabilities) Values

func (sc ServerCapabilities) Values(name string) Values

Values returns the named Values

type Values

type Values []capability

Values contains an array of capabilities

type XDriver

type XDriver struct{}

This struct is exported to make the driver directly accessible. In general the driver is used via the database/sql package.

func (XDriver) Open

func (d XDriver) Open(dsn string) (driver.Conn, error)

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