storj/private/migrate/db.go
Egon Elbre 64fb2d3d2f Revert "dbutil: statically require all databases accesses to use contexts"
This reverts commit 8e242cd012.

Revert because lib/pq has known issues with context cancellation.
These issues need to be resolved before these changes can be merged.

Change-Id: I160af51dbc2d67c5449aafa406a403e5367bb555
2020-01-15 07:28:00 +00:00

47 lines
1.1 KiB
Go

// Copyright (C) 2019 Storj Labs, Inc.
// See LICENSE for copying information.
package migrate
import (
"context"
"database/sql"
"database/sql/driver"
"storj.io/storj/private/dbutil/txutil"
)
// DB is the minimal implementation that is needed by migrations.
//
// DB can optionally have `Rebind(string) string` for translating `? queries for the specific database.
type DB interface {
BeginTx(ctx context.Context, txOptions *sql.TxOptions) (*sql.Tx, error)
Driver() driver.Driver
}
// DBX contains additional methods for migrations.
type DBX interface {
DB
Schema() string
Rebind(string) string
}
// rebind uses Rebind method when the database has the func.
func rebind(db DB, s string) string {
if dbx, ok := db.(interface{ Rebind(string) string }); ok {
return dbx.Rebind(s)
}
return s
}
// WithTx runs the given callback in the context of a transaction.
func WithTx(ctx context.Context, db DB, fn func(ctx context.Context, tx *sql.Tx) error) error {
tx, err := db.BeginTx(ctx, nil)
if err != nil {
return err
}
return txutil.ExecuteInTx(ctx, db.Driver(), tx, func() error {
return fn(ctx, tx)
})
}