dendrite/roomserver/storage/postgres/deltas/20230516154000_drop_reference_sha.go

55 lines
2.0 KiB
Go

// Copyright 2023 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 UpDropEventReferenceSHAEvents(ctx context.Context, tx *sql.Tx) error {
var count int
err := tx.QueryRowContext(ctx, `SELECT count(*) FROM roomserver_events GROUP BY event_id HAVING count(event_id) > 1`).
Scan(&count)
if err != nil && err != sql.ErrNoRows {
return fmt.Errorf("failed to query duplicate event ids")
}
if count > 0 {
return fmt.Errorf("unable to drop column, as there are duplicate event ids")
}
_, err = tx.ExecContext(ctx, `ALTER TABLE roomserver_events DROP COLUMN IF EXISTS reference_sha256;`)
if err != nil {
return fmt.Errorf("failed to execute upgrade: %w", err)
}
return nil
}
func UpDropEventReferenceSHAPrevEvents(ctx context.Context, tx *sql.Tx) error {
_, err := tx.ExecContext(ctx, "ALTER TABLE roomserver_previous_events DROP CONSTRAINT roomserver_previous_event_id_unique;")
if err != nil {
return fmt.Errorf("failed to execute upgrade: %w", err)
}
_, err = tx.ExecContext(ctx, `ALTER TABLE roomserver_previous_events DROP COLUMN IF EXISTS previous_reference_sha256;`)
if err != nil {
return fmt.Errorf("failed to execute upgrade: %w", err)
}
_, err = tx.ExecContext(ctx, `ALTER TABLE roomserver_previous_events ADD CONSTRAINT roomserver_previous_event_id_unique UNIQUE (previous_event_id);`)
if err != nil {
return fmt.Errorf("failed to execute upgrade: %w", err)
}
return nil
}