mirror of
https://github.com/neilotoole/sq.git
synced 2024-12-18 21:52:28 +03:00
51 lines
1.1 KiB
Go
51 lines
1.1 KiB
Go
package mysql
|
|
|
|
import (
|
|
"errors"
|
|
|
|
"github.com/go-sql-driver/mysql"
|
|
|
|
"github.com/neilotoole/sq/libsq/core/errz"
|
|
"github.com/neilotoole/sq/libsq/driver"
|
|
)
|
|
|
|
// errw wraps any error from the db. It should be called at
|
|
// every interaction with the db. If err is nil, nil is returned.
|
|
// Certain errors will be wrapped in specific error types,
|
|
// e.g, errz.NotExistError.
|
|
func errw(err error) error {
|
|
switch {
|
|
case err == nil:
|
|
return nil
|
|
case hasErrCode(err, errNumTableNotExist):
|
|
return driver.NewNotExistError(err)
|
|
default:
|
|
return errz.Err(err)
|
|
}
|
|
}
|
|
|
|
// hasErrCode returns true if err (or its cause error)
|
|
// is of type *mysql.MySQLError and err.Number equals code.
|
|
func hasErrCode(err error, code uint16) bool {
|
|
if err == nil {
|
|
return false
|
|
}
|
|
|
|
var mysqlErr *mysql.MySQLError
|
|
if errors.As(err, &mysqlErr) {
|
|
return mysqlErr.Number == code
|
|
}
|
|
|
|
return false
|
|
}
|
|
|
|
// https://dev.mysql.com/doc/mysql-errors/8.0/en/server-error-reference.html
|
|
const (
|
|
errNumTableNotExist = uint16(1146)
|
|
errNumConCount = uint16(1040)
|
|
)
|
|
|
|
func isErrTooManyConnections(err error) bool {
|
|
return hasErrCode(err, errNumConCount)
|
|
}
|