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database-sqlite.go
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73 lines (62 loc) · 1.78 KB
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//go:build sqlite && !wflib
// +build sqlite,!wflib
/*
* Copyright © 2019-2020 Musing Studio LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
package writefreely
import (
"database/sql"
"github.com/go-sql-driver/mysql"
"github.com/mattn/go-sqlite3"
"github.com/writeas/web-core/log"
"regexp"
)
func init() {
SQLiteEnabled = true
regex := func(re, s string) (bool, error) {
return regexp.MatchString(re, s)
}
sql.Register("sqlite3_with_regex", &sqlite3.SQLiteDriver{
ConnectHook: func(conn *sqlite3.SQLiteConn) error {
return conn.RegisterFunc("regexp", regex, true)
},
})
}
func (db *datastore) isDuplicateKeyErr(err error) bool {
if db.driverName == driverSQLite {
if err, ok := err.(sqlite3.Error); ok {
return err.Code == sqlite3.ErrConstraint
}
} else if db.driverName == driverMySQL {
if mysqlErr, ok := err.(*mysql.MySQLError); ok {
return mysqlErr.Number == mySQLErrDuplicateKey
}
} else {
log.Error("isDuplicateKeyErr: failed check for unrecognized driver '%s'", db.driverName)
}
return false
}
func (db *datastore) isIgnorableError(err error) bool {
if db.driverName == driverMySQL {
if mysqlErr, ok := err.(*mysql.MySQLError); ok {
return mysqlErr.Number == mySQLErrCollationMix
}
} else {
log.Error("isIgnorableError: failed check for unrecognized driver '%s'", db.driverName)
}
return false
}
func (db *datastore) isHighLoadError(err error) bool {
if db.driverName == driverMySQL {
if mysqlErr, ok := err.(*mysql.MySQLError); ok {
return mysqlErr.Number == mySQLErrMaxUserConns || mysqlErr.Number == mySQLErrTooManyConns
}
}
return false
}