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Emit redacted_event from the roomserver when redactions are validated (#1186)

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* Emit redacted_event from the roomserver when redactions are validated

- Consume them in the currentstateserver and act accordingly.
- Add integration test for the roomserver to check that injecting
  `m.room.redaction` events result in `redacted_event` being emitted.

* Linting

* Ignore events that redact themselves
This commit is contained in:
Kegsay 2020-07-07 12:51:55 +01:00 • committed by GitHub
parent d7a8bbff72
commit 99ea1f9b48
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18 changed files with 406 additions and 107 deletions
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25
currentstateserver/storage/shared/storage.go
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@ -17,10 +17,13 @@ package shared
import (
"context"
"database/sql"
"fmt"
"github.com/matrix-org/dendrite/currentstateserver/storage/tables"
"github.com/matrix-org/dendrite/internal/eventutil"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
type Database struct {
@ -36,6 +39,28 @@ func (d *Database) GetBulkStateContent(ctx context.Context, roomIDs []string, tu
return d.CurrentRoomState.SelectBulkStateContent(ctx, roomIDs, tuples, allowWildcards)
}
func (d *Database) RedactEvent(ctx context.Context, redactedEventID string, redactedBecause gomatrixserverlib.HeaderedEvent) error {
events, err := d.CurrentRoomState.SelectEventsWithEventIDs(ctx, nil, []string{redactedEventID})
if err != nil {
return err
}
if len(events) != 1 {
// this should never happen but is non-fatal
util.GetLogger(ctx).WithField("redacted_event_id", redactedEventID).WithField("redaction_event_id", redactedBecause.EventID()).Warnf(
"RedactEvent: missing redacted event",
)
return nil
}
redactionEvent := redactedBecause.Unwrap()
eventBeingRedacted := events[0].Unwrap()
redactedEvent, err := eventutil.RedactEvent(&redactionEvent, &eventBeingRedacted)
if err != nil {
return fmt.Errorf("RedactEvent failed: %w", err)
}
// replace the state event with a redacted version of itself
return d.StoreStateEvents(ctx, []gomatrixserverlib.HeaderedEvent{redactedEvent.Headered(redactedBecause.RoomVersion)}, []string{redactedEventID})
}
func (d *Database) StoreStateEvents(ctx context.Context, addStateEvents []gomatrixserverlib.HeaderedEvent,
removeStateEventIDs []string) error {
return sqlutil.WithTransaction(d.DB, func(txn *sql.Tx) error {