85 lines
2.4 KiB
Go
85 lines
2.4 KiB
Go
// GoToSocial
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// Copyright (C) GoToSocial Authors admin@gotosocial.org
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// SPDX-License-Identifier: AGPL-3.0-or-later
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package migrations
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import (
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"context"
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"github.com/uptrace/bun"
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)
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func init() {
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up := func(ctx context.Context, db *bun.DB) error {
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return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
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// Add new poll expiry column WITHOUT
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// the previously set NULL constraint.
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if _, err := tx.NewAddColumn().
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Table("polls").
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ColumnExpr("? TIMESTAMPTZ", bun.Ident("expires_at_new")).
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Exec(ctx); err != nil {
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return err
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}
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// Copy all data from old to new,
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// this won't cause anyn issues as
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// old column is NOT NULL and it's
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// only the new column that drops
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// this constraint to allow NULL.
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if _, err := tx.NewUpdate().
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Table("polls").
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Column("expires_at_new").
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Set("? = ?", bun.Ident("expires_at_new"), bun.Ident("expires_at")).
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Where("TRUE"). // bun gets angry performing update over all rows
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Exec(ctx); err != nil {
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return err
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}
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// Drop the old poll expiry column.
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if _, err := tx.NewDropColumn().
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Table("polls").
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ColumnExpr("?", bun.Ident("expires_at")).
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Exec(ctx); err != nil {
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return err
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}
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// Rename the new expiry column
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// to the correct name (of the old).
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if _, err := tx.NewRaw(
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"ALTER TABLE ? RENAME COLUMN ? TO ?",
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bun.Ident("polls"),
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bun.Ident("expires_at_new"),
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bun.Ident("expires_at"),
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).Exec(ctx); err != nil {
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return err
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}
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return nil
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})
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}
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down := func(ctx context.Context, db *bun.DB) error {
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return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
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return nil
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})
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}
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if err := Migrations.Register(up, down); err != nil {
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panic(err)
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}
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}
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