dendrite/keyserver/storage/postgres/deltas/2022012016470000_key_changes.go
Till 081f5e7226
Update database migrations, remove goose (#2264)
* Add new db migration

* Update migrations
Remove goose

* Add possibility to test direct upgrades

* Try to fix WASM test

* Add checks for specific migrations

* Remove AddMigration
Use WithTransaction
Add Dendrite version to table

* Fix linter issues

* Update tests

* Update comments, outdent if

* Namespace migrations

* Add direct upgrade tests, skipping over one version

* Split migrations

* Update go version in CI

* Fix copy&paste mistake

* Use contexts in migrations

Co-authored-by: kegsay <kegan@matrix.org>
Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
2022-07-25 10:39:22 +01:00

70 lines
2.6 KiB
Go

// Copyright 2022 The Matrix.org Foundation C.I.C.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package deltas
import (
"context"
"database/sql"
"fmt"
)
func UpRefactorKeyChanges(ctx context.Context, tx *sql.Tx) error {
// start counting from the last max offset, else 0. We need to do a count(*) first to see if there
// even are entries in this table to know if we can query for log_offset. Without the count then
// the query to SELECT the max log offset fails on new Dendrite instances as log_offset doesn't
// exist on that table. Even though we discard the error, the txn is tainted and gets aborted :/
var count int
_ = tx.QueryRowContext(ctx, `SELECT count(*) FROM keyserver_key_changes`).Scan(&count)
if count > 0 {
var maxOffset int64
_ = tx.QueryRowContext(ctx, `SELECT coalesce(MAX(log_offset), 0) AS offset FROM keyserver_key_changes`).Scan(&maxOffset)
if _, err := tx.ExecContext(ctx, fmt.Sprintf(`CREATE SEQUENCE IF NOT EXISTS keyserver_key_changes_seq START %d`, maxOffset)); err != nil {
return fmt.Errorf("failed to CREATE SEQUENCE for key changes, starting at %d: %s", maxOffset, err)
}
}
_, err := tx.ExecContext(ctx, `
-- make the new table
DROP TABLE IF EXISTS keyserver_key_changes;
CREATE TABLE IF NOT EXISTS keyserver_key_changes (
change_id BIGINT PRIMARY KEY DEFAULT nextval('keyserver_key_changes_seq'),
user_id TEXT NOT NULL,
CONSTRAINT keyserver_key_changes_unique_per_user UNIQUE (user_id)
);
`)
if err != nil {
return fmt.Errorf("failed to execute upgrade: %w", err)
}
return nil
}
func DownRefactorKeyChanges(ctx context.Context, tx *sql.Tx) error {
_, err := tx.ExecContext(ctx, `
-- Drop all data and revert back, we can't keep the data as Kafka offsets determine the numbers
DROP SEQUENCE IF EXISTS keyserver_key_changes_seq;
DROP TABLE IF EXISTS keyserver_key_changes;
CREATE TABLE IF NOT EXISTS keyserver_key_changes (
partition BIGINT NOT NULL,
log_offset BIGINT NOT NULL,
user_id TEXT NOT NULL,
CONSTRAINT keyserver_key_changes_unique UNIQUE (partition, log_offset)
);
`)
if err != nil {
return fmt.Errorf("failed to execute downgrade: %w", err)
}
return nil
}