forgejo/models/db/sql_postgres_with_schema.go
Lunny Xiao a4bfef265d
Move db related basic functions to models/db (#17075)
* Move db related basic functions to models/db

* Fix lint

* Fix lint

* Fix test

* Fix lint

* Fix lint

* revert unnecessary change

* Fix test

* Fix wrong replace string

* Use *Context

* Correct committer spelling and fix wrong replaced words

Co-authored-by: zeripath <art27@cantab.net>
2021-09-19 19:49:59 +08:00

75 lines
1.9 KiB
Go

// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package db
import (
"database/sql"
"database/sql/driver"
"sync"
"code.gitea.io/gitea/modules/setting"
"github.com/lib/pq"
"xorm.io/xorm/dialects"
)
var registerOnce sync.Once
func registerPostgresSchemaDriver() {
registerOnce.Do(func() {
sql.Register("postgresschema", &postgresSchemaDriver{})
dialects.RegisterDriver("postgresschema", dialects.QueryDriver("postgres"))
})
}
type postgresSchemaDriver struct {
pq.Driver
}
// Open opens a new connection to the database. name is a connection string.
// This function opens the postgres connection in the default manner but immediately
// runs set_config to set the search_path appropriately
func (d *postgresSchemaDriver) Open(name string) (driver.Conn, error) {
conn, err := d.Driver.Open(name)
if err != nil {
return conn, err
}
schemaValue, _ := driver.String.ConvertValue(setting.Database.Schema)
// golangci lint is incorrect here - there is no benefit to using driver.ExecerContext here
// and in any case pq does not implement it
if execer, ok := conn.(driver.Execer); ok { //nolint
_, err := execer.Exec(`SELECT set_config(
'search_path',
$1 || ',' || current_setting('search_path'),
false)`, []driver.Value{schemaValue}) //nolint
if err != nil {
_ = conn.Close()
return nil, err
}
return conn, nil
}
stmt, err := conn.Prepare(`SELECT set_config(
'search_path',
$1 || ',' || current_setting('search_path'),
false)`)
if err != nil {
_ = conn.Close()
return nil, err
}
defer stmt.Close()
// driver.String.ConvertValue will never return err for string
// golangci lint is incorrect here - there is no benefit to using stmt.ExecWithContext here
_, err = stmt.Exec([]driver.Value{schemaValue}) //nolint
if err != nil {
_ = conn.Close()
return nil, err
}
return conn, nil
}