123 lines
4.3 KiB
Go
123 lines
4.3 KiB
Go
// Copyright 2020 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 postgres
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
|
|
"github.com/matrix-org/dendrite/internal/sqlutil"
|
|
"github.com/matrix-org/dendrite/roomserver/storage/tables"
|
|
)
|
|
|
|
const redactionsSchema = `
|
|
-- Stores information about the redacted state of events.
|
|
-- We need to track redactions rather than blindly updating the event JSON table on receipt of a redaction
|
|
-- because we might receive the redaction BEFORE we receive the event which it redacts (think backfill).
|
|
CREATE TABLE IF NOT EXISTS roomserver_redactions (
|
|
redaction_event_id TEXT PRIMARY KEY,
|
|
redacts_event_id TEXT NOT NULL,
|
|
-- Initially FALSE, set to TRUE when the redaction has been validated according to rooms v3+ spec
|
|
-- https://matrix.org/docs/spec/rooms/v3#authorization-rules-for-events
|
|
validated BOOLEAN NOT NULL
|
|
);
|
|
CREATE INDEX IF NOT EXISTS roomserver_redactions_redacts_event_id ON roomserver_redactions(redacts_event_id);
|
|
`
|
|
|
|
const insertRedactionSQL = "" +
|
|
"INSERT INTO roomserver_redactions (redaction_event_id, redacts_event_id, validated)" +
|
|
" VALUES ($1, $2, $3)" +
|
|
" ON CONFLICT DO NOTHING"
|
|
|
|
const selectRedactionInfoByRedactionEventIDSQL = "" +
|
|
"SELECT redaction_event_id, redacts_event_id, validated FROM roomserver_redactions" +
|
|
" WHERE redaction_event_id = $1"
|
|
|
|
const selectRedactionInfoByEventBeingRedactedSQL = "" +
|
|
"SELECT redaction_event_id, redacts_event_id, validated FROM roomserver_redactions" +
|
|
" WHERE redacts_event_id = $1"
|
|
|
|
const markRedactionValidatedSQL = "" +
|
|
" UPDATE roomserver_redactions SET validated = $2 WHERE redaction_event_id = $1"
|
|
|
|
type redactionStatements struct {
|
|
insertRedactionStmt *sql.Stmt
|
|
selectRedactionInfoByRedactionEventIDStmt *sql.Stmt
|
|
selectRedactionInfoByEventBeingRedactedStmt *sql.Stmt
|
|
markRedactionValidatedStmt *sql.Stmt
|
|
}
|
|
|
|
func createRedactionsTable(db *sql.DB) error {
|
|
_, err := db.Exec(redactionsSchema)
|
|
return err
|
|
}
|
|
|
|
func prepareRedactionsTable(db *sql.DB) (tables.Redactions, error) {
|
|
s := &redactionStatements{}
|
|
|
|
return s, sqlutil.StatementList{
|
|
{&s.insertRedactionStmt, insertRedactionSQL},
|
|
{&s.selectRedactionInfoByRedactionEventIDStmt, selectRedactionInfoByRedactionEventIDSQL},
|
|
{&s.selectRedactionInfoByEventBeingRedactedStmt, selectRedactionInfoByEventBeingRedactedSQL},
|
|
{&s.markRedactionValidatedStmt, markRedactionValidatedSQL},
|
|
}.Prepare(db)
|
|
}
|
|
|
|
func (s *redactionStatements) InsertRedaction(
|
|
ctx context.Context, txn *sql.Tx, info tables.RedactionInfo,
|
|
) error {
|
|
stmt := sqlutil.TxStmt(txn, s.insertRedactionStmt)
|
|
_, err := stmt.ExecContext(ctx, info.RedactionEventID, info.RedactsEventID, info.Validated)
|
|
return err
|
|
}
|
|
|
|
func (s *redactionStatements) SelectRedactionInfoByRedactionEventID(
|
|
ctx context.Context, txn *sql.Tx, redactionEventID string,
|
|
) (info *tables.RedactionInfo, err error) {
|
|
info = &tables.RedactionInfo{}
|
|
stmt := sqlutil.TxStmt(txn, s.selectRedactionInfoByRedactionEventIDStmt)
|
|
err = stmt.QueryRowContext(ctx, redactionEventID).Scan(
|
|
&info.RedactionEventID, &info.RedactsEventID, &info.Validated,
|
|
)
|
|
if err == sql.ErrNoRows {
|
|
info = nil
|
|
err = nil
|
|
}
|
|
return
|
|
}
|
|
|
|
func (s *redactionStatements) SelectRedactionInfoByEventBeingRedacted(
|
|
ctx context.Context, txn *sql.Tx, eventID string,
|
|
) (info *tables.RedactionInfo, err error) {
|
|
info = &tables.RedactionInfo{}
|
|
stmt := sqlutil.TxStmt(txn, s.selectRedactionInfoByEventBeingRedactedStmt)
|
|
err = stmt.QueryRowContext(ctx, eventID).Scan(
|
|
&info.RedactionEventID, &info.RedactsEventID, &info.Validated,
|
|
)
|
|
if err == sql.ErrNoRows {
|
|
info = nil
|
|
err = nil
|
|
}
|
|
return
|
|
}
|
|
|
|
func (s *redactionStatements) MarkRedactionValidated(
|
|
ctx context.Context, txn *sql.Tx, redactionEventID string, validated bool,
|
|
) error {
|
|
stmt := sqlutil.TxStmt(txn, s.markRedactionValidatedStmt)
|
|
_, err := stmt.ExecContext(ctx, redactionEventID, validated)
|
|
return err
|
|
}
|