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// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
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:staticcheck
_, err := execer.Exec(`SELECT set_config(
'search_path',
$1 || ',' || current_setting('search_path'),
false)`, []driver.Value{schemaValue})
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:staticcheck
if err != nil {
_ = conn.Close()
return nil, err
}
return conn, nil
}
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