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// GoToSocial
// Copyright (C) GoToSocial Authors admin@gotosocial.org
// SPDX-License-Identifier: AGPL-3.0-or-later
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package postgres
import (
"context"
"database/sql/driver"
pgx "github.com/jackc/pgx/v5/stdlib"
"github.com/superseriousbusiness/gotosocial/internal/db"
)
var (
// global PostgreSQL driver instances.
postgresDriver = pgx.GetDefaultDriver().(*pgx.Driver)
// check the postgres driver types
// conforms to our interface types.
// (note SQLite doesn't export their
// driver types, and gets checked in
// tests very regularly anywho).
_ connIface = (*pgx.Conn)(nil)
_ stmtIface = (*pgx.Stmt)(nil)
_ rowsIface = (*pgx.Rows)(nil)
)
// Driver is our own wrapper around the
// pgx/stdlib.Driver{} type in order to wrap further
// SQL driver types with our own err processing.
type Driver struct{}
func (d *Driver) Open(name string) (driver.Conn, error) {
conn, err := postgresDriver.Open(name)
if err != nil {
err = processPostgresError(err)
return nil, err
}
return &postgresConn{conn.(connIface)}, nil
}
func (d *Driver) OpenConnector(name string) (driver.Connector, error) {
cc, err := postgresDriver.OpenConnector(name)
if err != nil {
err = processPostgresError(err)
return nil, err
}
return &postgresConnector{driver: d, Connector: cc}, nil
}
type postgresConnector struct {
driver *Driver
driver.Connector
}
func (c *postgresConnector) Driver() driver.Driver { return c.driver }
func (c *postgresConnector) Connect(ctx context.Context) (driver.Conn, error) {
conn, err := c.Connector.Connect(ctx)
if err != nil {
err = processPostgresError(err)
return nil, err
}
return &postgresConn{conn.(connIface)}, nil
}
type postgresConn struct{ connIface }
func (c *postgresConn) Begin() (driver.Tx, error) {
return c.BeginTx(context.Background(), driver.TxOptions{})
}
func (c *postgresConn) BeginTx(ctx context.Context, opts driver.TxOptions) (driver.Tx, error) {
tx, err := c.connIface.BeginTx(ctx, opts)
err = processPostgresError(err)
if err != nil {
return nil, err
}
return &postgresTx{tx}, nil
}
func (c *postgresConn) Prepare(query string) (driver.Stmt, error) {
return c.PrepareContext(context.Background(), query)
}
func (c *postgresConn) PrepareContext(ctx context.Context, query string) (driver.Stmt, error) {
st, err := c.connIface.PrepareContext(ctx, query)
err = processPostgresError(err)
if err != nil {
return nil, err
}
return &postgresStmt{st.(stmtIface)}, nil
}
func (c *postgresConn) Exec(query string, args []driver.Value) (driver.Result, error) {
return c.ExecContext(context.Background(), query, db.ToNamedValues(args))
}
func (c *postgresConn) ExecContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Result, error) {
result, err := c.connIface.ExecContext(ctx, query, args)
err = processPostgresError(err)
return result, err
}
func (c *postgresConn) Query(query string, args []driver.Value) (driver.Rows, error) {
return c.QueryContext(context.Background(), query, db.ToNamedValues(args))
}
func (c *postgresConn) QueryContext(ctx context.Context, query string, args []driver.NamedValue) (driver.Rows, error) {
rows, err := c.connIface.QueryContext(ctx, query, args)
err = processPostgresError(err)
if err != nil {
return nil, err
}
return &postgresRows{rows.(rowsIface)}, nil
}
func (c *postgresConn) Close() error {
err := c.connIface.Close()
return processPostgresError(err)
}
type postgresTx struct{ driver.Tx }
func (tx *postgresTx) Commit() error {
err := tx.Tx.Commit()
return processPostgresError(err)
}
func (tx *postgresTx) Rollback() error {
err := tx.Tx.Rollback()
return processPostgresError(err)
}
type postgresStmt struct{ stmtIface }
func (stmt *postgresStmt) Exec(args []driver.Value) (driver.Result, error) {
return stmt.ExecContext(context.Background(), db.ToNamedValues(args))
}
func (stmt *postgresStmt) ExecContext(ctx context.Context, args []driver.NamedValue) (driver.Result, error) {
res, err := stmt.stmtIface.ExecContext(ctx, args)
err = processPostgresError(err)
return res, err
}
func (stmt *postgresStmt) Query(args []driver.Value) (driver.Rows, error) {
return stmt.QueryContext(context.Background(), db.ToNamedValues(args))
}
func (stmt *postgresStmt) QueryContext(ctx context.Context, args []driver.NamedValue) (driver.Rows, error) {
rows, err := stmt.stmtIface.QueryContext(ctx, args)
err = processPostgresError(err)
if err != nil {
return nil, err
}
return &postgresRows{rows.(rowsIface)}, nil
}
type postgresRows struct{ rowsIface }
func (r *postgresRows) Next(dest []driver.Value) error {
err := r.rowsIface.Next(dest)
err = processPostgresError(err)
return err
}
func (r *postgresRows) Close() error {
err := r.rowsIface.Close()
err = processPostgresError(err)
return err
}
type connIface interface {
driver.Conn
driver.ConnPrepareContext
driver.ExecerContext
driver.QueryerContext
driver.ConnBeginTx
}
type stmtIface interface {
driver.Stmt
driver.StmtExecContext
driver.StmtQueryContext
}
type rowsIface interface {
driver.Rows
driver.RowsColumnTypeDatabaseTypeName
driver.RowsColumnTypeLength
driver.RowsColumnTypePrecisionScale
driver.RowsColumnTypeScanType
driver.RowsColumnTypeScanType
}
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