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106 lines
2.8 KiB
Go
106 lines
2.8 KiB
Go
// Go MySQL Driver - A MySQL-Driver for Go's database/sql package
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//
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// Copyright 2013 The Go-MySQL-Driver Authors. All rights reserved.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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package mysql
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import (
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"database/sql/driver"
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"errors"
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"fmt"
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"io"
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)
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var (
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errInvalidConn = errors.New("Invalid Connection")
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errMalformPkt = errors.New("Malformed Packet")
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errNoTLS = errors.New("TLS encryption requested but server does not support TLS")
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errOldPassword = errors.New("This server only supports the insecure old password authentication. If you still want to use it, please add 'allowOldPasswords=1' to your DSN. See also https://github.com/go-sql-driver/mysql/wiki/old_passwords")
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errOldProtocol = errors.New("MySQL-Server does not support required Protocol 41+")
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errPktSync = errors.New("Commands out of sync. You can't run this command now")
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errPktSyncMul = errors.New("Commands out of sync. Did you run multiple statements at once?")
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errPktTooLarge = errors.New("Packet for query is too large. You can change this value on the server by adjusting the 'max_allowed_packet' variable.")
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)
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// error type which represents a single MySQL error
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type MySQLError struct {
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Number uint16
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Message string
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}
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func (me *MySQLError) Error() string {
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return fmt.Sprintf("Error %d: %s", me.Number, me.Message)
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}
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// error type which represents a group of one or more MySQL warnings
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type MySQLWarnings []mysqlWarning
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func (mws MySQLWarnings) Error() string {
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var msg string
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for i, warning := range mws {
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if i > 0 {
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msg += "\r\n"
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}
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msg += fmt.Sprintf("%s %s: %s", warning.Level, warning.Code, warning.Message)
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}
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return msg
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}
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// error type which represents a single MySQL warning
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type mysqlWarning struct {
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Level string
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Code string
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Message string
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}
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func (mc *mysqlConn) getWarnings() (err error) {
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rows, err := mc.Query("SHOW WARNINGS", []driver.Value{})
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if err != nil {
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return
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}
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var warnings = MySQLWarnings{}
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var values = make([]driver.Value, 3)
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var warning mysqlWarning
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var raw []byte
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var ok bool
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for {
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err = rows.Next(values)
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switch err {
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case nil:
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warning = mysqlWarning{}
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if raw, ok = values[0].([]byte); ok {
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warning.Level = string(raw)
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} else {
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warning.Level = fmt.Sprintf("%s", values[0])
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}
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if raw, ok = values[1].([]byte); ok {
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warning.Code = string(raw)
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} else {
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warning.Code = fmt.Sprintf("%s", values[1])
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}
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if raw, ok = values[2].([]byte); ok {
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warning.Message = string(raw)
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} else {
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warning.Message = fmt.Sprintf("%s", values[0])
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}
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warnings = append(warnings, warning)
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case io.EOF:
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return warnings
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default:
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rows.Close()
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return
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}
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}
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}
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