mirror of
https://github.com/1f349/dendrite.git
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73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
// Copyright 2023 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package deltas
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import (
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"context"
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"database/sql"
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"fmt"
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)
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func UpDropEventReferenceSHA(ctx context.Context, tx *sql.Tx) error {
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var count int
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err := tx.QueryRowContext(ctx, `SELECT count(*) FROM roomserver_events GROUP BY event_id HAVING count(event_id) > 1`).
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Scan(&count)
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if err != nil && err != sql.ErrNoRows {
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return fmt.Errorf("failed to query duplicate event ids")
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}
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if count > 0 {
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return fmt.Errorf("unable to drop column, as there are duplicate event ids")
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}
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_, err = tx.ExecContext(ctx, `ALTER TABLE roomserver_events DROP COLUMN reference_sha256;`)
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if err != nil {
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return fmt.Errorf("failed to execute upgrade: %w", err)
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}
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return nil
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}
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func UpDropEventReferenceSHAPrevEvents(ctx context.Context, tx *sql.Tx) error {
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// rename the table
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if _, err := tx.ExecContext(ctx, `ALTER TABLE roomserver_previous_events RENAME TO _roomserver_previous_events;`); err != nil {
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return fmt.Errorf("tx.ExecContext: %w", err)
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}
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// create new table
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if _, err := tx.ExecContext(ctx, `CREATE TABLE IF NOT EXISTS roomserver_previous_events (
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previous_event_id TEXT NOT NULL,
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event_nids TEXT NOT NULL,
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UNIQUE (previous_event_id)
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);`); err != nil {
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return fmt.Errorf("tx.ExecContext: %w", err)
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}
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// move data
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if _, err := tx.ExecContext(ctx, `
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INSERT
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INTO roomserver_previous_events (
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previous_event_id, event_nids
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) SELECT
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previous_event_id, event_nids
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FROM _roomserver_previous_events
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;`); err != nil {
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return fmt.Errorf("tx.ExecContext: %w", err)
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}
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// drop old table
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_, err := tx.ExecContext(ctx, `DROP TABLE _roomserver_previous_events;`)
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if err != nil {
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return fmt.Errorf("failed to execute upgrade: %w", err)
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}
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return nil
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}
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