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Optimise checking other servers allowed to see events (#2596)

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* Try optimising checking if server is allowed to see event

* Fix error

* Handle case where snapshot NID is 0

* Fix query

* Update SQL

* Clean up `CheckServerAllowedToSeeEvent`

* Not supported on SQLite

* Maybe placate the unit tests

* Review comments
This commit is contained in:
Neil Alexander 2022-08-01 14:11:00 +01:00 • committed by GitHub
parent c7f7aec4d0
commit 05c83923e3
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8 changed files with 154 additions and 12 deletions
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32
roomserver/storage/shared/storage.go
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@ -988,6 +988,38 @@ func (d *Database) loadEvent(ctx context.Context, eventID string) *types.Event {
return &evs[0]
}
func (d *Database) GetHistoryVisibilityState(ctx context.Context, roomInfo *types.RoomInfo, eventID string, domain string) ([]*gomatrixserverlib.Event, error) {
eventStates, err := d.EventsTable.BulkSelectStateAtEventByID(ctx, nil, []string{eventID})
if err != nil {
return nil, err
}
stateSnapshotNID := eventStates[0].BeforeStateSnapshotNID
if stateSnapshotNID == 0 {
return nil, nil
}
eventNIDs, err := d.StateSnapshotTable.BulkSelectStateForHistoryVisibility(ctx, nil, stateSnapshotNID, domain)
if err != nil {
return nil, err
}
eventIDs, _ := d.EventsTable.BulkSelectEventID(ctx, nil, eventNIDs)
if err != nil {
eventIDs = map[types.EventNID]string{}
}
events := make([]*gomatrixserverlib.Event, 0, len(eventNIDs))
for _, eventNID := range eventNIDs {
data, err := d.EventJSONTable.BulkSelectEventJSON(ctx, nil, []types.EventNID{eventNID})
if err != nil {
return nil, err
}
ev, err := gomatrixserverlib.NewEventFromTrustedJSONWithEventID(eventIDs[eventNID], data[0].EventJSON, false, roomInfo.RoomVersion)
if err != nil {
return nil, err
}
events = append(events, ev)
}
return events, nil
}
// GetStateEvent returns the current state event of a given type for a given room with a given state key
// If no event could be found, returns nil
// If there was an issue during the retrieval, returns an error