Pass pointers to events — reloaded (#1583)

* Pass events as pointers

* Fix lint errors

* Update gomatrixserverlib

* Update gomatrixserverlib

* Update to matrix-org/gomatrixserverlib#240

appservice/consumers/roomserver.go

@@ -88,7 +88,7 @@ func (s *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 		return nil
 	}
 
-	events := []gomatrixserverlib.HeaderedEvent{output.NewRoomEvent.Event}
+	events := []*gomatrixserverlib.HeaderedEvent{output.NewRoomEvent.Event}
 	events = append(events, output.NewRoomEvent.AddStateEvents...)
 
 	// Send event to any relevant application services
@@ -102,14 +102,14 @@ func (s *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 // application service.
 func (s *OutputRoomEventConsumer) filterRoomserverEvents(
 	ctx context.Context,
-	events []gomatrixserverlib.HeaderedEvent,
+	events []*gomatrixserverlib.HeaderedEvent,
 ) error {
 	for _, ws := range s.workerStates {
 		for _, event := range events {
 			// Check if this event is interesting to this application service
 			if s.appserviceIsInterestedInEvent(ctx, event, ws.AppService) {
 				// Queue this event to be sent off to the application service
-				if err := s.asDB.StoreEvent(ctx, ws.AppService.ID, &event); err != nil {
+				if err := s.asDB.StoreEvent(ctx, ws.AppService.ID, event); err != nil {
 					log.WithError(err).Warn("failed to insert incoming event into appservices database")
 				} else {
 					// Tell our worker to send out new messages by updating remaining message
@@ -125,7 +125,7 @@ func (s *OutputRoomEventConsumer) filterRoomserverEvents(
 
 // appserviceIsInterestedInEvent returns a boolean depending on whether a given
 // event falls within one of a given application service's namespaces.
-func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Context, event gomatrixserverlib.HeaderedEvent, appservice config.ApplicationService) bool {
+func (s *OutputRoomEventConsumer) appserviceIsInterestedInEvent(ctx context.Context, event *gomatrixserverlib.HeaderedEvent, appservice config.ApplicationService) bool {
 	// No reason to queue events if they'll never be sent to the application
 	// service
 	if appservice.URL == "" {

appservice/workers/transaction_scheduler.go

@@ -185,7 +185,7 @@ func createTransaction(
 		}
 	}
 
-	var ev []gomatrixserverlib.Event
+	var ev []*gomatrixserverlib.Event
 	for _, e := range events {
 		ev = append(ev, e.Event)
 	}

clientapi/routing/createroom.go

@@ -255,7 +255,7 @@ func createRoom(
 		historyVisibility = historyVisibilityShared
 	}
 
-	var builtEvents []gomatrixserverlib.HeaderedEvent
+	var builtEvents []*gomatrixserverlib.HeaderedEvent
 
 	// send events into the room in order of:
 	//  1- m.room.create
@@ -327,13 +327,13 @@ func createRoom(
 			return jsonerror.InternalServerError()
 		}
 
-		if err = gomatrixserverlib.Allowed(*ev, &authEvents); err != nil {
+		if err = gomatrixserverlib.Allowed(ev, &authEvents); err != nil {
 			util.GetLogger(req.Context()).WithError(err).Error("gomatrixserverlib.Allowed failed")
 			return jsonerror.InternalServerError()
 		}
 
 		// Add the event to the list of auth events
-		builtEvents = append(builtEvents, (*ev).Headered(roomVersion))
+		builtEvents = append(builtEvents, ev.Headered(roomVersion))
 		err = authEvents.AddEvent(ev)
 		if err != nil {
 			util.GetLogger(req.Context()).WithError(err).Error("authEvents.AddEvent failed")
@@ -397,7 +397,7 @@ func createRoom(
 				ev := event.Event
 				globalStrippedState = append(
 					globalStrippedState,
-					gomatrixserverlib.NewInviteV2StrippedState(&ev),
+					gomatrixserverlib.NewInviteV2StrippedState(ev),
 				)
 			}
 		}
@@ -415,7 +415,7 @@ func createRoom(
 			}
 			inviteStrippedState := append(
 				globalStrippedState,
-				gomatrixserverlib.NewInviteV2StrippedState(&inviteEvent.Event),
+				gomatrixserverlib.NewInviteV2StrippedState(inviteEvent.Event),
 			)
 			// Send the invite event to the roomserver.
 			err = roomserverAPI.SendInvite(
@@ -488,5 +488,5 @@ func buildEvent(
 	if err != nil {
 		return nil, fmt.Errorf("cannot build event %s : Builder failed to build. %w", builder.Type, err)
 	}
-	return &event, nil
+	return event, nil
 }

clientapi/routing/getevent.go

@@ -32,7 +32,7 @@ type getEventRequest struct {
 	eventID        string
 	cfg            *config.ClientAPI
 	federation     *gomatrixserverlib.FederationClient
-	requestedEvent gomatrixserverlib.Event
+	requestedEvent *gomatrixserverlib.Event
 }
 
 // GetEvent implements GET /_matrix/client/r0/rooms/{roomId}/event/{eventId}

clientapi/routing/membership.go

@@ -77,7 +77,7 @@ func sendMembership(ctx context.Context, accountDB accounts.Database, device *us
 	if err = roomserverAPI.SendEvents(
 		ctx, rsAPI,
 		api.KindNew,
-		[]gomatrixserverlib.HeaderedEvent{event.Event.Headered(roomVer)},
+		[]*gomatrixserverlib.HeaderedEvent{event.Event.Headered(roomVer)},
 		cfg.Matrix.ServerName,
 		nil,
 	); err != nil {
@@ -214,7 +214,7 @@ func SendInvite(
 
 	err = roomserverAPI.SendInvite(
 		req.Context(), rsAPI,
-		*event,
+		event,
 		nil, // ask the roomserver to draw up invite room state for us
 		cfg.Matrix.ServerName,
 		nil,

clientapi/routing/profile.go

@@ -346,14 +346,14 @@ func buildMembershipEvents(
 	roomIDs []string,
 	newProfile authtypes.Profile, userID string, cfg *config.ClientAPI,
 	evTime time.Time, rsAPI api.RoomserverInternalAPI,
-) ([]gomatrixserverlib.HeaderedEvent, error) {
+) ([]*gomatrixserverlib.HeaderedEvent, error) {
-	evs := []gomatrixserverlib.HeaderedEvent{}
+	evs := []*gomatrixserverlib.HeaderedEvent{}
 
 	for _, roomID := range roomIDs {
 		verReq := api.QueryRoomVersionForRoomRequest{RoomID: roomID}
 		verRes := api.QueryRoomVersionForRoomResponse{}
 		if err := rsAPI.QueryRoomVersionForRoom(ctx, &verReq, &verRes); err != nil {
-			return []gomatrixserverlib.HeaderedEvent{}, err
+			return nil, err
 		}
 
 		builder := gomatrixserverlib.EventBuilder{
@@ -379,7 +379,7 @@ func buildMembershipEvents(
 			return nil, err
 		}
 
-		evs = append(evs, (*event).Headered(verRes.RoomVersion))
+		evs = append(evs, event.Headered(verRes.RoomVersion))
 	}
 
 	return evs, nil

clientapi/routing/redaction.go

@@ -121,7 +121,7 @@ func SendRedaction(
 			JSON: jsonerror.NotFound("Room does not exist"),
 		}
 	}
-	if err = roomserverAPI.SendEvents(context.Background(), rsAPI, api.KindNew, []gomatrixserverlib.HeaderedEvent{*e}, cfg.Matrix.ServerName, nil); err != nil {
+	if err = roomserverAPI.SendEvents(context.Background(), rsAPI, api.KindNew, []*gomatrixserverlib.HeaderedEvent{e}, cfg.Matrix.ServerName, nil); err != nil {
 		util.GetLogger(req.Context()).WithError(err).Errorf("failed to SendEvents")
 		return jsonerror.InternalServerError()
 	}

clientapi/routing/sendevent.go

@@ -93,7 +93,7 @@ func SendEvent(
 	if err := api.SendEvents(
 		req.Context(), rsAPI,
 		api.KindNew,
-		[]gomatrixserverlib.HeaderedEvent{
+		[]*gomatrixserverlib.HeaderedEvent{
 			e.Headered(verRes.RoomVersion),
 		},
 		cfg.Matrix.ServerName,
@@ -189,7 +189,7 @@ func generateSendEvent(
 	// check to see if this user can perform this operation
 	stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
 	for i := range queryRes.StateEvents {
-		stateEvents[i] = &queryRes.StateEvents[i].Event
+		stateEvents[i] = queryRes.StateEvents[i].Event
 	}
 	provider := gomatrixserverlib.NewAuthEvents(stateEvents)
 	if err = gomatrixserverlib.Allowed(e.Event, &provider); err != nil {
@@ -198,5 +198,5 @@ func generateSendEvent(
 			JSON: jsonerror.Forbidden(err.Error()), // TODO: Is this error string comprehensible to the client?
 		}
 	}
-	return &e.Event, nil
+	return e.Event, nil
 }

clientapi/routing/state.go

@@ -267,7 +267,7 @@ func OnIncomingStateTypeRequest(
 		// to find the state event, if provided.
 		for _, ev := range stateRes.StateEvents {
 			if ev.Type() == evType && ev.StateKeyEquals(stateKey) {
-				event = &ev
+				event = ev
 				break
 			}
 		}
@@ -290,7 +290,7 @@ func OnIncomingStateTypeRequest(
 			return jsonerror.InternalServerError()
 		}
 		if len(stateAfterRes.StateEvents) > 0 {
-			event = &stateAfterRes.StateEvents[0]
+			event = stateAfterRes.StateEvents[0]
 		}
 	}
 
@@ -304,7 +304,7 @@ func OnIncomingStateTypeRequest(
 	}
 
 	stateEvent := stateEventInStateResp{
-		ClientEvent: gomatrixserverlib.HeaderedToClientEvent(*event, gomatrixserverlib.FormatAll),
+		ClientEvent: gomatrixserverlib.HeaderedToClientEvent(event, gomatrixserverlib.FormatAll),
 	}
 
 	var res interface{}

clientapi/threepid/invites.go

@@ -362,8 +362,8 @@ func emit3PIDInviteEvent(
 	return api.SendEvents(
 		ctx, rsAPI,
 		api.KindNew,
-		[]gomatrixserverlib.HeaderedEvent{
+		[]*gomatrixserverlib.HeaderedEvent{
-			(*event).Headered(queryRes.RoomVersion),
+			event.Headered(queryRes.RoomVersion),
 		},
 		cfg.Matrix.ServerName,
 		nil,

cmd/create-room-events/main.go

@@ -123,7 +123,7 @@ func buildAndOutput() gomatrixserverlib.EventReference {
 }
 
 // Write an event to the output.
-func writeEvent(event gomatrixserverlib.Event) {
+func writeEvent(event *gomatrixserverlib.Event) {
 	encoder := json.NewEncoder(os.Stdout)
 	if *format == "InputRoomEvent" {
 		var ire api.InputRoomEvent

cmd/resolve-state/main.go

@@ -80,9 +80,9 @@ func main() {
 	}
 
 	authEventIDMap := make(map[string]struct{})
-	eventPtrs := make([]*gomatrixserverlib.Event, len(eventEntries))
+	events := make([]*gomatrixserverlib.Event, len(eventEntries))
 	for i := range eventEntries {
-		eventPtrs[i] = &eventEntries[i].Event
+		events[i] = eventEntries[i].Event
 		for _, authEventID := range eventEntries[i].AuthEventIDs() {
 			authEventIDMap[authEventID] = struct{}{}
 		}
@@ -99,18 +99,9 @@ func main() {
 		panic(err)
 	}
 
-	authEventPtrs := make([]*gomatrixserverlib.Event, len(authEventEntries))
+	authEvents := make([]*gomatrixserverlib.Event, len(authEventEntries))
 	for i := range authEventEntries {
-		authEventPtrs[i] = &authEventEntries[i].Event
+		authEvents[i] = authEventEntries[i].Event
-	}
-
-	events := make([]gomatrixserverlib.Event, len(eventEntries))
-	authEvents := make([]gomatrixserverlib.Event, len(authEventEntries))
-	for i, ptr := range eventPtrs {
-		events[i] = *ptr
-	}
-	for i, ptr := range authEventPtrs {
-		authEvents[i] = *ptr
 	}
 
 	fmt.Println("Resolving state")

cmd/syncserver-integration-tests/main.go

@@ -103,7 +103,7 @@ func clientEventJSONForOutputRoomEvent(outputRoomEvent string) string {
 	if err := json.Unmarshal([]byte(outputRoomEvent), &out); err != nil {
 		panic("failed to unmarshal output room event: " + err.Error())
 	}
-	clientEvs := gomatrixserverlib.ToClientEvents([]gomatrixserverlib.Event{
+	clientEvs := gomatrixserverlib.ToClientEvents([]*gomatrixserverlib.Event{
 		out.NewRoomEvent.Event.Event,
 	}, gomatrixserverlib.FormatSync)
 	b, err := json.Marshal(clientEvs[0])

federationapi/federationapi_test.go

@@ -72,7 +72,7 @@ func TestRoomsV3URLEscapeDoNot404(t *testing.T) {
 			t.Errorf("failed to parse event: %s", err)
 		}
 		he := ev.Headered(tc.roomVer)
-		invReq, err := gomatrixserverlib.NewInviteV2Request(&he, nil)
+		invReq, err := gomatrixserverlib.NewInviteV2Request(he, nil)
 		if err != nil {
 			t.Errorf("failed to create invite v2 request: %s", err)
 			continue

federationapi/routing/backfill.go

@@ -93,9 +93,9 @@ func Backfill(
 	}
 
 	// Filter any event that's not from the requested room out.
-	evs := make([]gomatrixserverlib.Event, 0)
+	evs := make([]*gomatrixserverlib.Event, 0)
 
-	var ev gomatrixserverlib.HeaderedEvent
+	var ev *gomatrixserverlib.HeaderedEvent
 	for _, ev = range res.Events {
 		if ev.RoomID() == roomID {
 			evs = append(evs, ev.Event)

federationapi/routing/events.go

@@ -98,5 +98,5 @@ func fetchEvent(ctx context.Context, rsAPI api.RoomserverInternalAPI, eventID st
 		return nil, &util.JSONResponse{Code: http.StatusNotFound, JSON: nil}
 	}
 
-	return &eventsResponse.Events[0].Event, nil
+	return eventsResponse.Events[0].Event, nil
 }

federationapi/routing/invite.go

@@ -97,7 +97,7 @@ func InviteV1(
 func processInvite(
 	ctx context.Context,
 	isInviteV2 bool,
-	event gomatrixserverlib.Event,
+	event *gomatrixserverlib.Event,
 	roomVer gomatrixserverlib.RoomVersion,
 	strippedState []gomatrixserverlib.InviteV2StrippedState,
 	roomID string,
@@ -171,12 +171,12 @@ func processInvite(
 		if isInviteV2 {
 			return util.JSONResponse{
 				Code: http.StatusOK,
-				JSON: gomatrixserverlib.RespInviteV2{Event: signedEvent},
+				JSON: gomatrixserverlib.RespInviteV2{Event: &signedEvent},
 			}
 		} else {
 			return util.JSONResponse{
 				Code: http.StatusOK,
-				JSON: gomatrixserverlib.RespInvite{Event: signedEvent},
+				JSON: gomatrixserverlib.RespInvite{Event: &signedEvent},
 			}
 		}
 	default:

federationapi/routing/join.go

@@ -138,7 +138,7 @@ func MakeJoin(
 	// Check that the join is allowed or not
 	stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
 	for i := range queryRes.StateEvents {
-		stateEvents[i] = &queryRes.StateEvents[i].Event
+		stateEvents[i] = queryRes.StateEvents[i].Event
 	}
 
 	provider := gomatrixserverlib.NewAuthEvents(stateEvents)
@@ -291,7 +291,7 @@ func SendJoin(
 		if err = api.SendEvents(
 			httpReq.Context(), rsAPI,
 			api.KindNew,
-			[]gomatrixserverlib.HeaderedEvent{
+			[]*gomatrixserverlib.HeaderedEvent{
 				event.Headered(stateAndAuthChainResponse.RoomVersion),
 			},
 			cfg.Matrix.ServerName,
@@ -319,7 +319,7 @@ func SendJoin(
 	}
 }
 
-type eventsByDepth []gomatrixserverlib.HeaderedEvent
+type eventsByDepth []*gomatrixserverlib.HeaderedEvent
 
 func (e eventsByDepth) Len() int {
 	return len(e)

federationapi/routing/leave.go

@@ -98,7 +98,7 @@ func MakeLeave(
 	// Check that the leave is allowed or not
 	stateEvents := make([]*gomatrixserverlib.Event, len(queryRes.StateEvents))
 	for i := range queryRes.StateEvents {
-		stateEvents[i] = &queryRes.StateEvents[i].Event
+		stateEvents[i] = queryRes.StateEvents[i].Event
 	}
 	provider := gomatrixserverlib.NewAuthEvents(stateEvents)
 	if err = gomatrixserverlib.Allowed(event.Event, &provider); err != nil {
@@ -257,7 +257,7 @@ func SendLeave(
 	if err = api.SendEvents(
 		httpReq.Context(), rsAPI,
 		api.KindNew,
-		[]gomatrixserverlib.HeaderedEvent{
+		[]*gomatrixserverlib.HeaderedEvent{
 			event.Headered(verRes.RoomVersion),
 		},
 		cfg.Matrix.ServerName,

federationapi/routing/missingevents.go

@@ -73,8 +73,8 @@ func GetMissingEvents(
 
 // filterEvents returns only those events with matching roomID
 func filterEvents(
-	events []gomatrixserverlib.HeaderedEvent, roomID string,
+	events []*gomatrixserverlib.HeaderedEvent, roomID string,
-) []gomatrixserverlib.HeaderedEvent {
+) []*gomatrixserverlib.HeaderedEvent {
 	ref := events[:0]
 	for _, ev := range events {
 		if ev.RoomID() == roomID {

federationapi/routing/send.go

@@ -128,7 +128,7 @@ type txnFederationClient interface {
 func (t *txnReq) processTransaction(ctx context.Context) (*gomatrixserverlib.RespSend, *util.JSONResponse) {
 	results := make(map[string]gomatrixserverlib.PDUResult)
 
-	pdus := []gomatrixserverlib.HeaderedEvent{}
+	pdus := []*gomatrixserverlib.HeaderedEvent{}
 	for _, pdu := range t.PDUs {
 		var header struct {
 			RoomID string `json:"room_id"`
@@ -171,7 +171,7 @@ func (t *txnReq) processTransaction(ctx context.Context) (*gomatrixserverlib.Res
 			}
 			continue
 		}
-		if err = gomatrixserverlib.VerifyAllEventSignatures(ctx, []gomatrixserverlib.Event{event}, t.keys); err != nil {
+		if err = gomatrixserverlib.VerifyAllEventSignatures(ctx, []*gomatrixserverlib.Event{event}, t.keys); err != nil {
 			util.GetLogger(ctx).WithError(err).Warnf("Transaction: Couldn't validate signature of event %q", event.EventID())
 			results[event.EventID()] = gomatrixserverlib.PDUResult{
 				Error: err.Error(),
@@ -413,7 +413,7 @@ func (t *txnReq) getServers(ctx context.Context, roomID string) []gomatrixserver
 	return servers
 }
 
-func (t *txnReq) processEvent(ctx context.Context, e gomatrixserverlib.Event) error {
+func (t *txnReq) processEvent(ctx context.Context, e *gomatrixserverlib.Event) error {
 	logger := util.GetLogger(ctx).WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
 
 	// Work out if the roomserver knows everything it needs to know to auth
@@ -461,7 +461,7 @@ func (t *txnReq) processEvent(ctx context.Context, e gomatrixserverlib.Event) er
 		context.Background(),
 		t.rsAPI,
 		api.KindNew,
-		[]gomatrixserverlib.HeaderedEvent{
+		[]*gomatrixserverlib.HeaderedEvent{
 			e.Headered(stateResp.RoomVersion),
 		},
 		api.DoNotSendToOtherServers,
@@ -470,7 +470,7 @@ func (t *txnReq) processEvent(ctx context.Context, e gomatrixserverlib.Event) er
 }
 
 func (t *txnReq) retrieveMissingAuthEvents(
-	ctx context.Context, e gomatrixserverlib.Event, stateResp *api.QueryMissingAuthPrevEventsResponse,
+	ctx context.Context, e *gomatrixserverlib.Event, stateResp *api.QueryMissingAuthPrevEventsResponse,
 ) error {
 	logger := util.GetLogger(ctx).WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
 
@@ -523,10 +523,10 @@ withNextEvent:
 	return nil
 }
 
-func checkAllowedByState(e gomatrixserverlib.Event, stateEvents []gomatrixserverlib.Event) error {
+func checkAllowedByState(e *gomatrixserverlib.Event, stateEvents []*gomatrixserverlib.Event) error {
 	authUsingState := gomatrixserverlib.NewAuthEvents(nil)
 	for i := range stateEvents {
-		err := authUsingState.AddEvent(&stateEvents[i])
+		err := authUsingState.AddEvent(stateEvents[i])
 		if err != nil {
 			return err
 		}
@@ -535,7 +535,7 @@ func checkAllowedByState(e gomatrixserverlib.Event, stateEvents []gomatrixserver
 }
 
 // nolint:gocyclo
-func (t *txnReq) processEventWithMissingState(ctx context.Context, e gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) error {
+func (t *txnReq) processEventWithMissingState(ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) error {
 	// Do this with a fresh context, so that we keep working even if the
 	// original request times out. With any luck, by the time the remote
 	// side retries, we'll have fetched the missing state.
@@ -569,7 +569,7 @@ func (t *txnReq) processEventWithMissingState(ctx context.Context, e gomatrixser
 		return nil
 	}
 
-	backwardsExtremity := &newEvents[0]
+	backwardsExtremity := newEvents[0]
 	newEvents = newEvents[1:]
 
 	type respState struct {
@@ -657,7 +657,7 @@ func (t *txnReq) processEventWithMissingState(ctx context.Context, e gomatrixser
 	// than the backward extremity, into the roomserver without state. This way
 	// they will automatically fast-forward based on the room state at the
 	// extremity in the last step.
-	headeredNewEvents := make([]gomatrixserverlib.HeaderedEvent, len(newEvents))
+	headeredNewEvents := make([]*gomatrixserverlib.HeaderedEvent, len(newEvents))
 	for i, newEvent := range newEvents {
 		headeredNewEvents[i] = newEvent.Headered(roomVersion)
 	}
@@ -734,9 +734,9 @@ func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, event
 		return nil
 	}
 	for i, ev := range res.StateEvents {
-		t.haveEvents[ev.EventID()] = &res.StateEvents[i]
+		t.haveEvents[ev.EventID()] = res.StateEvents[i]
 	}
-	var authEvents []gomatrixserverlib.Event
+	var authEvents []*gomatrixserverlib.Event
 	missingAuthEvents := make(map[string]bool)
 	for _, ev := range res.StateEvents {
 		for _, ae := range ev.AuthEventIDs() {
@@ -764,7 +764,7 @@ func (t *txnReq) lookupStateAfterEventLocally(ctx context.Context, roomID, event
 	}
 	for i := range queryRes.Events {
 		evID := queryRes.Events[i].EventID()
-		t.haveEvents[evID] = &queryRes.Events[i]
+		t.haveEvents[evID] = queryRes.Events[i]
 		authEvents = append(authEvents, queryRes.Events[i].Unwrap())
 	}
 
@@ -787,8 +787,8 @@ func (t *txnReq) lookupStateBeforeEvent(ctx context.Context, roomVersion gomatri
 }
 
 func (t *txnReq) resolveStatesAndCheck(ctx context.Context, roomVersion gomatrixserverlib.RoomVersion, states []*gomatrixserverlib.RespState, backwardsExtremity *gomatrixserverlib.Event) (*gomatrixserverlib.RespState, error) {
-	var authEventList []gomatrixserverlib.Event
+	var authEventList []*gomatrixserverlib.Event
-	var stateEventList []gomatrixserverlib.Event
+	var stateEventList []*gomatrixserverlib.Event
 	for _, state := range states {
 		authEventList = append(authEventList, state.AuthEvents...)
 		stateEventList = append(stateEventList, state.StateEvents...)
@@ -799,7 +799,7 @@ func (t *txnReq) resolveStatesAndCheck(ctx context.Context, roomVersion gomatrix
 	}
 	// apply the current event
 retryAllowedState:
-	if err = checkAllowedByState(*backwardsExtremity, resolvedStateEvents); err != nil {
+	if err = checkAllowedByState(backwardsExtremity, resolvedStateEvents); err != nil {
 		switch missing := err.(type) {
 		case gomatrixserverlib.MissingAuthEventError:
 			servers := t.getServers(ctx, backwardsExtremity.RoomID())
@@ -836,9 +836,9 @@ retryAllowedState:
 // This function recursively calls txnReq.processEvent with the missing events, which will be processed before this function returns.
 // This means that we may recursively call this function, as we spider back up prev_events.
 // nolint:gocyclo
-func (t *txnReq) getMissingEvents(ctx context.Context, e gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) (newEvents []gomatrixserverlib.Event, err error) {
+func (t *txnReq) getMissingEvents(ctx context.Context, e *gomatrixserverlib.Event, roomVersion gomatrixserverlib.RoomVersion) (newEvents []*gomatrixserverlib.Event, err error) {
 	logger := util.GetLogger(ctx).WithField("event_id", e.EventID()).WithField("room_id", e.RoomID())
-	needed := gomatrixserverlib.StateNeededForAuth([]gomatrixserverlib.Event{e})
+	needed := gomatrixserverlib.StateNeededForAuth([]*gomatrixserverlib.Event{e})
 	// query latest events (our trusted forward extremities)
 	req := api.QueryLatestEventsAndStateRequest{
 		RoomID:       e.RoomID(),
@@ -979,7 +979,7 @@ func (t *txnReq) lookupMissingStateViaStateIDs(ctx context.Context, roomID, even
 	}
 	for i := range queryRes.Events {
 		evID := queryRes.Events[i].EventID()
-		t.haveEvents[evID] = &queryRes.Events[i]
+		t.haveEvents[evID] = queryRes.Events[i]
 		if missing[evID] {
 			delete(missing, evID)
 		}
@@ -1116,10 +1116,10 @@ func (t *txnReq) lookupEvent(ctx context.Context, roomVersion gomatrixserverlib.
 		if err := t.rsAPI.QueryEventsByID(ctx, &queryReq, &queryRes); err != nil {
 			util.GetLogger(ctx).Warnf("Failed to query roomserver for missing event %s: %s - falling back to remote", missingEventID, err)
 		} else if len(queryRes.Events) == 1 {
-			return &queryRes.Events[0], nil
+			return queryRes.Events[0], nil
 		}
 	}
-	var event gomatrixserverlib.Event
+	var event *gomatrixserverlib.Event
 	found := false
 	for _, serverName := range servers {
 		txn, err := t.federation.GetEvent(ctx, serverName, missingEventID)
@@ -1139,11 +1139,11 @@ func (t *txnReq) lookupEvent(ctx context.Context, roomVersion gomatrixserverlib.
 		util.GetLogger(ctx).WithField("event_id", missingEventID).Warnf("Failed to get missing /event for event ID from %d server(s)", len(servers))
 		return nil, fmt.Errorf("wasn't able to find event via %d server(s)", len(servers))
 	}
-	if err := gomatrixserverlib.VerifyAllEventSignatures(ctx, []gomatrixserverlib.Event{event}, t.keys); err != nil {
+	if err := gomatrixserverlib.VerifyAllEventSignatures(ctx, []*gomatrixserverlib.Event{event}, t.keys); err != nil {
 		util.GetLogger(ctx).WithError(err).Warnf("Transaction: Couldn't validate signature of event %q", event.EventID())
 		return nil, verifySigError{event.EventID(), err}
 	}
 	h := event.Headered(roomVersion)
 	t.newEvents[h.EventID()] = true
-	return &h, nil
+	return h, nil
 }

federationapi/routing/send_test.go

@@ -33,8 +33,8 @@ var (
 		[]byte(`{"auth_events":[["$0ok8ynDp7kjc95e3:kaer.morhen",{"sha256":"sWCi6Ckp9rDimQON+MrUlNRkyfZ2tjbPbWfg2NMB18Q"}],["$LEwEu0kxrtu5fOiS:kaer.morhen",{"sha256":"1aKajq6DWHru1R1HJjvdWMEavkJJHGaTmPvfuERUXaA"}]],"content":{"body":"Test Message"},"depth":6,"event_id":"$MYSbs8m4rEbsCWXD:kaer.morhen","hashes":{"sha256":"kgbYM7v4Ud2YaBsjBTolM4ySg6rHcJNYI6nWhMSdFUA"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$gl2T9l3qm0kUbiIJ:kaer.morhen",{"sha256":"C/rD04h9wGxRdN2G/IBfrgoE1UovzLZ+uskwaKZ37/Q"}]],"room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"x0UoKh968jj/F5l1/R7Ew0T6CTKuew3PLNHASNxqck/bkNe8yYQiDHXRr+kZxObeqPZZTpaF1+EI+bLU9W8GDQ"}},"type":"m.room.message"}`),
 		[]byte(`{"auth_events":[["$0ok8ynDp7kjc95e3:kaer.morhen",{"sha256":"sWCi6Ckp9rDimQON+MrUlNRkyfZ2tjbPbWfg2NMB18Q"}],["$LEwEu0kxrtu5fOiS:kaer.morhen",{"sha256":"1aKajq6DWHru1R1HJjvdWMEavkJJHGaTmPvfuERUXaA"}]],"content":{"body":"Test Message"},"depth":7,"event_id":"$N5x9WJkl9ClPrAEg:kaer.morhen","hashes":{"sha256":"FWM8oz4yquTunRZ67qlW2gzPDzdWfBP6RPHXhK1I/x8"},"origin":"kaer.morhen","origin_server_ts":0,"prev_events":[["$MYSbs8m4rEbsCWXD:kaer.morhen",{"sha256":"fatqgW+SE8mb2wFn3UN+drmluoD4UJ/EcSrL6Ur9q1M"}]],"room_id":"!roomid:kaer.morhen","sender":"@userid:kaer.morhen","signatures":{"kaer.morhen":{"ed25519:auto":"Y+LX/xcyufoXMOIoqQBNOzy6lZfUGB1ffgXIrSugk6obMiyAsiRejHQN/pciZXsHKxMJLYRFAz4zSJoS/LGPAA"}},"type":"m.room.message"}`),
 	}
-	testEvents      = []gomatrixserverlib.HeaderedEvent{}
+	testEvents      = []*gomatrixserverlib.HeaderedEvent{}
-	testStateEvents = make(map[gomatrixserverlib.StateKeyTuple]gomatrixserverlib.HeaderedEvent)
+	testStateEvents = make(map[gomatrixserverlib.StateKeyTuple]*gomatrixserverlib.HeaderedEvent)
 )
 
 func init() {
@@ -445,7 +445,7 @@ NextPDU:
 	}
 }
 
-func fromStateTuples(tuples []gomatrixserverlib.StateKeyTuple, omitTuples []gomatrixserverlib.StateKeyTuple) (result []gomatrixserverlib.HeaderedEvent) {
+func fromStateTuples(tuples []gomatrixserverlib.StateKeyTuple, omitTuples []gomatrixserverlib.StateKeyTuple) (result []*gomatrixserverlib.HeaderedEvent) {
 NextTuple:
 	for _, t := range tuples {
 		for _, o := range omitTuples {
@@ -461,7 +461,7 @@ NextTuple:
 	return
 }
 
-func assertInputRoomEvents(t *testing.T, got []api.InputRoomEvent, want []gomatrixserverlib.HeaderedEvent) {
+func assertInputRoomEvents(t *testing.T, got []api.InputRoomEvent, want []*gomatrixserverlib.HeaderedEvent) {
 	for _, g := range got {
 		fmt.Println("GOT ", g.Event.EventID())
 	}
@@ -493,7 +493,7 @@ func TestBasicTransaction(t *testing.T) {
 	}
 	txn := mustCreateTransaction(rsAPI, &txnFedClient{}, pdus)
 	mustProcessTransaction(t, txn, nil)
-	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []gomatrixserverlib.HeaderedEvent{testEvents[len(testEvents)-1]})
+	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []*gomatrixserverlib.HeaderedEvent{testEvents[len(testEvents)-1]})
 }
 
 // The purpose of this test is to check that if the event received fails auth checks the event is still sent to the roomserver
@@ -514,7 +514,7 @@ func TestTransactionFailAuthChecks(t *testing.T) {
 	txn := mustCreateTransaction(rsAPI, &txnFedClient{}, pdus)
 	mustProcessTransaction(t, txn, []string{})
 	// expect message to be sent to the roomserver
-	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []gomatrixserverlib.HeaderedEvent{testEvents[len(testEvents)-1]})
+	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []*gomatrixserverlib.HeaderedEvent{testEvents[len(testEvents)-1]})
 }
 
 // The purpose of this test is to make sure that when an event is received for which we do not know the prev_events,
@@ -586,7 +586,7 @@ func TestTransactionFetchMissingPrevEvents(t *testing.T) {
 				t.Errorf("call to /get_missing_events wrong latest events: got %v want %v", missing.LatestEvents, inputEvent.EventID())
 			}
 			return gomatrixserverlib.RespMissingEvents{
-				Events: []gomatrixserverlib.Event{
+				Events: []*gomatrixserverlib.Event{
 					prevEvent.Unwrap(),
 				},
 			}, nil
@@ -598,7 +598,7 @@ func TestTransactionFetchMissingPrevEvents(t *testing.T) {
 	}
 	txn := mustCreateTransaction(rsAPI, cli, pdus)
 	mustProcessTransaction(t, txn, nil)
-	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []gomatrixserverlib.HeaderedEvent{prevEvent, inputEvent})
+	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []*gomatrixserverlib.HeaderedEvent{prevEvent, inputEvent})
 }
 
 // The purpose of this test is to check that when there are missing prev_events and we still haven't been able to fill
@@ -653,7 +653,7 @@ func TestTransactionFetchMissingStateByStateIDs(t *testing.T) {
 			} else if askingForEvent == eventB.EventID() {
 				prevEventExists = haveEventB
 			}
-			var stateEvents []gomatrixserverlib.HeaderedEvent
+			var stateEvents []*gomatrixserverlib.HeaderedEvent
 			if prevEventExists {
 				stateEvents = fromStateTuples(req.StateToFetch, omitTuples)
 			}
@@ -771,7 +771,7 @@ func TestTransactionFetchMissingStateByStateIDs(t *testing.T) {
 			}
 			// just return event C, not event B so /state_ids logic kicks in as there will STILL be missing prev_events
 			return gomatrixserverlib.RespMissingEvents{
-				Events: []gomatrixserverlib.Event{
+				Events: []*gomatrixserverlib.Event{
 					eventC.Unwrap(),
 				},
 			}, nil
@@ -783,5 +783,5 @@ func TestTransactionFetchMissingStateByStateIDs(t *testing.T) {
 	}
 	txn := mustCreateTransaction(rsAPI, cli, pdus)
 	mustProcessTransaction(t, txn, nil)
-	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []gomatrixserverlib.HeaderedEvent{eventB, eventC, eventD})
+	assertInputRoomEvents(t, rsAPI.inputRoomEvents, []*gomatrixserverlib.HeaderedEvent{eventB, eventC, eventD})
 }

federationapi/routing/state.go

@@ -136,7 +136,7 @@ func getState(
 	}, nil
 }
 
-func getIDsFromEvent(events []gomatrixserverlib.Event) []string {
+func getIDsFromEvent(events []*gomatrixserverlib.Event) []string {
 	IDs := make([]string, len(events))
 	for i := range events {
 		IDs[i] = events[i].EventID()

federationapi/routing/threepid.go

@@ -65,7 +65,7 @@ func CreateInvitesFrom3PIDInvites(
 		return *reqErr
 	}
 
-	evs := []gomatrixserverlib.HeaderedEvent{}
+	evs := []*gomatrixserverlib.HeaderedEvent{}
 	for _, inv := range body.Invites {
 		verReq := api.QueryRoomVersionForRoomRequest{RoomID: inv.RoomID}
 		verRes := api.QueryRoomVersionForRoomResponse{}
@@ -84,7 +84,7 @@ func CreateInvitesFrom3PIDInvites(
 			return jsonerror.InternalServerError()
 		}
 		if event != nil {
-			evs = append(evs, (*event).Headered(verRes.RoomVersion))
+			evs = append(evs, event.Headered(verRes.RoomVersion))
 		}
 	}
 
@@ -165,7 +165,7 @@ func ExchangeThirdPartyInvite(
 
 	// Ask the requesting server to sign the newly created event so we know it
 	// acknowledged it
-	signedEvent, err := federation.SendInvite(httpReq.Context(), request.Origin(), *event)
+	signedEvent, err := federation.SendInvite(httpReq.Context(), request.Origin(), event)
 	if err != nil {
 		util.GetLogger(httpReq.Context()).WithError(err).Error("federation.SendInvite failed")
 		return jsonerror.InternalServerError()
@@ -175,7 +175,7 @@ func ExchangeThirdPartyInvite(
 	if err = api.SendEvents(
 		httpReq.Context(), rsAPI,
 		api.KindNew,
-		[]gomatrixserverlib.HeaderedEvent{
+		[]*gomatrixserverlib.HeaderedEvent{
 			signedEvent.Event.Headered(verRes.RoomVersion),
 		},
 		cfg.Matrix.ServerName,
@@ -297,7 +297,7 @@ func buildMembershipEvent(
 	authEvents := gomatrixserverlib.NewAuthEvents(nil)
 
 	for i := range queryRes.StateEvents {
-		err = authEvents.AddEvent(&queryRes.StateEvents[i].Event)
+		err = authEvents.AddEvent(queryRes.StateEvents[i].Event)
 		if err != nil {
 			return nil, err
 		}
@@ -318,7 +318,7 @@ func buildMembershipEvent(
 		cfg.Matrix.PrivateKey, queryRes.RoomVersion,
 	)
 
-	return &event, err
+	return event, err
 }
 
 // sendToRemoteServer uses federation to send an invite provided by an identity

federationsender/api/api.go

@@ -118,12 +118,12 @@ type PerformLeaveResponse struct {
 
 type PerformInviteRequest struct {
 	RoomVersion     gomatrixserverlib.RoomVersion             `json:"room_version"`
-	Event           gomatrixserverlib.HeaderedEvent           `json:"event"`
+	Event           *gomatrixserverlib.HeaderedEvent          `json:"event"`
 	InviteRoomState []gomatrixserverlib.InviteV2StrippedState `json:"invite_room_state"`
 }
 
 type PerformInviteResponse struct {
-	Event gomatrixserverlib.HeaderedEvent `json:"event"`
+	Event *gomatrixserverlib.HeaderedEvent `json:"event"`
 }
 
 type PerformServersAliveRequest struct {

federationsender/consumers/roomserver.go

@@ -85,7 +85,7 @@ func (s *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 
 	switch output.Type {
 	case api.OutputTypeNewRoomEvent:
-		ev := &output.NewRoomEvent.Event
+		ev := output.NewRoomEvent.Event
 
 		if output.NewRoomEvent.RewritesState {
 			if err := s.db.PurgeRoomState(context.TODO(), ev.RoomID()); err != nil {
@@ -158,7 +158,7 @@ func (s *OutputRoomEventConsumer) processMessage(ore api.OutputNewRoomEvent) err
 
 	// Send the event.
 	return s.queues.SendEvent(
-		&ore.Event, gomatrixserverlib.ServerName(ore.SendAsServer), joinedHostsAtEvent,
+		ore.Event, gomatrixserverlib.ServerName(ore.SendAsServer), joinedHostsAtEvent,
 	)
 }
 
@@ -226,7 +226,7 @@ func (s *OutputRoomEventConsumer) joinedHostsAtEvent(
 // joinedHostsFromEvents turns a list of state events into a list of joined hosts.
 // This errors if one of the events was invalid.
 // It should be impossible for an invalid event to get this far in the pipeline.
-func joinedHostsFromEvents(evs []gomatrixserverlib.Event) ([]types.JoinedHost, error) {
+func joinedHostsFromEvents(evs []*gomatrixserverlib.Event) ([]types.JoinedHost, error) {
 	var joinedHosts []types.JoinedHost
 	for _, ev := range evs {
 		if ev.Type() != "m.room.member" || ev.StateKey() == nil {
@@ -291,8 +291,8 @@ func combineDeltas(adds1, removes1, adds2, removes2 []string) (adds, removes []s
 
 // lookupStateEvents looks up the state events that are added by a new event.
 func (s *OutputRoomEventConsumer) lookupStateEvents(
-	addsStateEventIDs []string, event gomatrixserverlib.Event,
+	addsStateEventIDs []string, event *gomatrixserverlib.Event,
-) ([]gomatrixserverlib.Event, error) {
+) ([]*gomatrixserverlib.Event, error) {
 	// Fast path if there aren't any new state events.
 	if len(addsStateEventIDs) == 0 {
 		return nil, nil
@@ -300,11 +300,11 @@ func (s *OutputRoomEventConsumer) lookupStateEvents(
 
 	// Fast path if the only state event added is the event itself.
 	if len(addsStateEventIDs) == 1 && addsStateEventIDs[0] == event.EventID() {
-		return []gomatrixserverlib.Event{event}, nil
+		return []*gomatrixserverlib.Event{event}, nil
 	}
 
 	missing := addsStateEventIDs
-	var result []gomatrixserverlib.Event
+	var result []*gomatrixserverlib.Event
 
 	// Check if event itself is being added.
 	for _, eventID := range missing {
@@ -343,7 +343,7 @@ func (s *OutputRoomEventConsumer) lookupStateEvents(
 	return result, nil
 }
 
-func missingEventsFrom(events []gomatrixserverlib.Event, required []string) []string {
+func missingEventsFrom(events []*gomatrixserverlib.Event, required []string) []string {
 	have := map[string]bool{}
 	for _, event := range events {
 		have[event.EventID()] = true

federationsender/internal/perform.go

@@ -378,7 +378,7 @@ func (r *FederationSenderInternalAPI) PerformInvite(
 		"destination":  destination,
 	}).Info("Sending invite")
 
-	inviteReq, err := gomatrixserverlib.NewInviteV2Request(&request.Event, request.InviteRoomState)
+	inviteReq, err := gomatrixserverlib.NewInviteV2Request(request.Event, request.InviteRoomState)
 	if err != nil {
 		return fmt.Errorf("gomatrixserverlib.NewInviteV2Request: %w", err)
 	}

federationsender/internal/perform/join.go

@@ -26,20 +26,20 @@ func JoinContext(f *gomatrixserverlib.FederationClient, k *gomatrixserverlib.Key
 // and that the join is allowed by the supplied state.
 func (r joinContext) CheckSendJoinResponse(
 	ctx context.Context,
-	event gomatrixserverlib.Event,
+	event *gomatrixserverlib.Event,
 	server gomatrixserverlib.ServerName,
 	respMakeJoin gomatrixserverlib.RespMakeJoin,
 	respSendJoin gomatrixserverlib.RespSendJoin,
 ) (*gomatrixserverlib.RespState, error) {
 	// A list of events that we have retried, if they were not included in
 	// the auth events supplied in the send_join.
-	retries := map[string][]gomatrixserverlib.Event{}
+	retries := map[string][]*gomatrixserverlib.Event{}
 
 	// Define a function which we can pass to Check to retrieve missing
 	// auth events inline. This greatly increases our chances of not having
 	// to repeat the entire set of checks just for a missing event or two.
-	missingAuth := func(roomVersion gomatrixserverlib.RoomVersion, eventIDs []string) ([]gomatrixserverlib.Event, error) {
+	missingAuth := func(roomVersion gomatrixserverlib.RoomVersion, eventIDs []string) ([]*gomatrixserverlib.Event, error) {
-		returning := []gomatrixserverlib.Event{}
+		returning := []*gomatrixserverlib.Event{}
 
 		// See if we have retry entries for each of the supplied event IDs.
 		for _, eventID := range eventIDs {
@@ -75,7 +75,7 @@ func (r joinContext) CheckSendJoinResponse(
 				}
 
 				// Check the signatures of the event.
-				if res, err := gomatrixserverlib.VerifyEventSignatures(ctx, []gomatrixserverlib.Event{ev}, r.keyRing); err != nil {
+				if res, err := gomatrixserverlib.VerifyEventSignatures(ctx, []*gomatrixserverlib.Event{ev}, r.keyRing); err != nil {
 					return nil, fmt.Errorf("missingAuth VerifyEventSignatures: %w", err)
 				} else {
 					for _, err := range res {

go.mod

@@ -22,7 +22,7 @@ require (
 	github.com/matrix-org/go-http-js-libp2p v0.0.0-20200518170932-783164aeeda4
 	github.com/matrix-org/go-sqlite3-js v0.0.0-20200522092705-bc8506ccbcf3
 	github.com/matrix-org/gomatrix v0.0.0-20200827122206-7dd5e2a05bcd
-	github.com/matrix-org/gomatrixserverlib v0.0.0-20201020162226-22169fe9cda7
+	github.com/matrix-org/gomatrixserverlib v0.0.0-20201116151724-6e7b24e4956c
 	github.com/matrix-org/naffka v0.0.0-20200901083833-bcdd62999a91
 	github.com/matrix-org/util v0.0.0-20200807132607-55161520e1d4
 	github.com/mattn/go-sqlite3 v1.14.2

go.sum

@@ -569,8 +569,8 @@ github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26 h1:Hr3zjRsq2bh
 github.com/matrix-org/gomatrix v0.0.0-20190528120928-7df988a63f26/go.mod h1:3fxX6gUjWyI/2Bt7J1OLhpCzOfO/bB3AiX0cJtEKud0=
 github.com/matrix-org/gomatrix v0.0.0-20200827122206-7dd5e2a05bcd h1:xVrqJK3xHREMNjwjljkAUaadalWc0rRbmVuQatzmgwg=
 github.com/matrix-org/gomatrix v0.0.0-20200827122206-7dd5e2a05bcd/go.mod h1:/gBX06Kw0exX1HrwmoBibFA98yBk/jxKpGVeyQbff+s=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20201020162226-22169fe9cda7 h1:YPuewGCKaJh08NslYAhyGiLw2tg6ew9LtkW7Xr+4uTU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20201116151724-6e7b24e4956c h1:iiloytJig9EmlKwuSulIbNvoPz1BFZ1QdyPWpuy85XM=
-github.com/matrix-org/gomatrixserverlib v0.0.0-20201020162226-22169fe9cda7/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
+github.com/matrix-org/gomatrixserverlib v0.0.0-20201116151724-6e7b24e4956c/go.mod h1:JsAzE1Ll3+gDWS9JSUHPJiiyAksvOOnGWF2nXdg4ZzU=
 github.com/matrix-org/naffka v0.0.0-20200901083833-bcdd62999a91 h1:HJ6U3S3ljJqNffYMcIeAncp5qT/i+ZMiJ2JC2F0aXP4=
 github.com/matrix-org/naffka v0.0.0-20200901083833-bcdd62999a91/go.mod h1:sjyPyRxKM5uw1nD2cJ6O2OxI6GOqyVBfNXqKjBZTBZE=
 github.com/matrix-org/util v0.0.0-20190711121626-527ce5ddefc7 h1:ntrLa/8xVzeSs8vHFHK25k0C+NV74sYMJnNSg5NoSRo=

internal/eventutil/events.go

@@ -73,8 +73,7 @@ func BuildEvent(
 		return nil, err
 	}
 
-	h := event.Headered(queryRes.RoomVersion)
+	return event.Headered(queryRes.RoomVersion), nil
-	return &h, nil
 }
 
 // queryRequiredEventsForBuilder queries the roomserver for auth/prev events needed for this builder.
@@ -120,7 +119,7 @@ func addPrevEventsToEvent(
 	authEvents := gomatrixserverlib.NewAuthEvents(nil)
 
 	for i := range queryRes.StateEvents {
-		err = authEvents.AddEvent(&queryRes.StateEvents[i].Event)
+		err = authEvents.AddEvent(queryRes.StateEvents[i].Event)
 		if err != nil {
 			return fmt.Errorf("authEvents.AddEvent: %w", err)
 		}
@@ -186,5 +185,5 @@ func RedactEvent(redactionEvent, redactedEvent *gomatrixserverlib.Event) (*gomat
 	if err != nil {
 		return nil, err
 	}
-	return &r, nil
+	return r, nil
 }

roomserver/acls/acls.go

@@ -61,7 +61,7 @@ func NewServerACLs(db ServerACLDatabase) *ServerACLs {
 			continue
 		}
 		if state != nil {
-			acls.OnServerACLUpdate(&state.Event)
+			acls.OnServerACLUpdate(state.Event)
 		}
 	}
 	return acls

roomserver/api/input.go

@@ -53,7 +53,7 @@ type InputRoomEvent struct {
 	// This controls how the event is processed.
 	Kind Kind `json:"kind"`
 	// The event JSON for the event to add.
-	Event gomatrixserverlib.HeaderedEvent `json:"event"`
+	Event *gomatrixserverlib.HeaderedEvent `json:"event"`
 	// List of state event IDs that authenticate this event.
 	// These are likely derived from the "auth_events" JSON key of the event.
 	// But can be different because the "auth_events" key can be incomplete or wrong.

roomserver/api/output.go

@@ -94,7 +94,7 @@ const (
 // prev_events.
 type OutputNewRoomEvent struct {
 	// The Event.
-	Event gomatrixserverlib.HeaderedEvent `json:"event"`
+	Event *gomatrixserverlib.HeaderedEvent `json:"event"`
 	// Does the event completely rewrite the room state? If so, then AddsStateEventIDs
 	// will contain the entire room state.
 	RewritesState bool `json:"rewrites_state"`
@@ -111,7 +111,7 @@ type OutputNewRoomEvent struct {
 	// may decide a bunch of state events on one branch are now valid, so they will be
 	// present in this list. This is useful when trying to maintain the current state of a room
 	// as to do so you need to include both these events and `Event`.
-	AddStateEvents []gomatrixserverlib.HeaderedEvent `json:"adds_state_events"`
+	AddStateEvents []*gomatrixserverlib.HeaderedEvent `json:"adds_state_events"`
 
 	// The state event IDs that were removed from the state of the room by this event.
 	RemovesStateEventIDs []string `json:"removes_state_event_ids"`
@@ -168,7 +168,7 @@ type OutputNewRoomEvent struct {
 // the original event to save space, so you cannot use that slice alone.
 // Instead, use this function which will add the original event if it is present
 // in `AddsStateEventIDs`.
-func (ore *OutputNewRoomEvent) AddsState() []gomatrixserverlib.HeaderedEvent {
+func (ore *OutputNewRoomEvent) AddsState() []*gomatrixserverlib.HeaderedEvent {
 	includeOutputEvent := false
 	for _, id := range ore.AddsStateEventIDs {
 		if id == ore.Event.EventID() {
@@ -193,7 +193,7 @@ func (ore *OutputNewRoomEvent) AddsState() []gomatrixserverlib.HeaderedEvent {
 // should build their current room state up from OutputNewRoomEvents only.
 type OutputOldRoomEvent struct {
 	// The Event.
-	Event gomatrixserverlib.HeaderedEvent `json:"event"`
+	Event *gomatrixserverlib.HeaderedEvent `json:"event"`
 }
 
 // An OutputNewInviteEvent is written whenever an invite becomes active.
@@ -203,7 +203,7 @@ type OutputNewInviteEvent struct {
 	// The room version of the invited room.
 	RoomVersion gomatrixserverlib.RoomVersion `json:"room_version"`
 	// The "m.room.member" invite event.
-	Event gomatrixserverlib.HeaderedEvent `json:"event"`
+	Event *gomatrixserverlib.HeaderedEvent `json:"event"`
 }
 
 // An OutputRetireInviteEvent is written whenever an existing invite is no longer
@@ -230,7 +230,7 @@ type OutputRedactedEvent struct {
 	// The event ID that was redacted
 	RedactedEventID string
 	// The value of `unsigned.redacted_because` - the redaction event itself
-	RedactedBecause gomatrixserverlib.HeaderedEvent
+	RedactedBecause *gomatrixserverlib.HeaderedEvent
 }
 
 // An OutputNewPeek is written whenever a user starts peeking into a room

roomserver/api/perform.go

@@ -98,7 +98,7 @@ type PerformLeaveResponse struct {
 
 type PerformInviteRequest struct {
 	RoomVersion     gomatrixserverlib.RoomVersion             `json:"room_version"`
-	Event           gomatrixserverlib.HeaderedEvent           `json:"event"`
+	Event           *gomatrixserverlib.HeaderedEvent          `json:"event"`
 	InviteRoomState []gomatrixserverlib.InviteV2StrippedState `json:"invite_room_state"`
 	SendAsServer    string                                    `json:"send_as_server"`
 	TransactionID   *TransactionID                            `json:"transaction_id"`
@@ -147,7 +147,7 @@ func (r *PerformBackfillRequest) PrevEventIDs() []string {
 // PerformBackfillResponse is a response to PerformBackfill.
 type PerformBackfillResponse struct {
 	// Missing events, arbritrary order.
-	Events []gomatrixserverlib.HeaderedEvent `json:"events"`
+	Events []*gomatrixserverlib.HeaderedEvent `json:"events"`
 }
 
 type PerformPublishRequest struct {

roomserver/api/query.go

@@ -50,7 +50,7 @@ type QueryLatestEventsAndStateResponse struct {
 	// This list will be in an arbitrary order.
 	// These are used to set the auth_events when sending an event.
 	// These are used to check whether the event is allowed.
-	StateEvents []gomatrixserverlib.HeaderedEvent `json:"state_events"`
+	StateEvents []*gomatrixserverlib.HeaderedEvent `json:"state_events"`
 	// The depth of the latest events.
 	// This is one greater than the maximum depth of the latest events.
 	// This is used to set the depth when sending an event.
@@ -80,7 +80,7 @@ type QueryStateAfterEventsResponse struct {
 	PrevEventsExist bool `json:"prev_events_exist"`
 	// The state events requested.
 	// This list will be in an arbitrary order.
-	StateEvents []gomatrixserverlib.HeaderedEvent `json:"state_events"`
+	StateEvents []*gomatrixserverlib.HeaderedEvent `json:"state_events"`
 }
 
 type QueryMissingAuthPrevEventsRequest struct {
@@ -119,7 +119,7 @@ type QueryEventsByIDResponse struct {
 	// fails to read it from the database then it will fail
 	// the entire request.
 	// This list will be in an arbitrary order.
-	Events []gomatrixserverlib.HeaderedEvent `json:"events"`
+	Events []*gomatrixserverlib.HeaderedEvent `json:"events"`
 }
 
 // QueryMembershipForUserRequest is a request to QueryMembership
@@ -213,7 +213,7 @@ type QueryMissingEventsRequest struct {
 // QueryMissingEventsResponse is a response to QueryMissingEvents
 type QueryMissingEventsResponse struct {
 	// Missing events, arbritrary order.
-	Events []gomatrixserverlib.HeaderedEvent `json:"events"`
+	Events []*gomatrixserverlib.HeaderedEvent `json:"events"`
 }
 
 // QueryStateAndAuthChainRequest is a request to QueryStateAndAuthChain
@@ -242,8 +242,8 @@ type QueryStateAndAuthChainResponse struct {
 	PrevEventsExist bool `json:"prev_events_exist"`
 	// The state and auth chain events that were requested.
 	// The lists will be in an arbitrary order.
-	StateEvents     []gomatrixserverlib.HeaderedEvent `json:"state_events"`
+	StateEvents     []*gomatrixserverlib.HeaderedEvent `json:"state_events"`
-	AuthChainEvents []gomatrixserverlib.HeaderedEvent `json:"auth_chain_events"`
+	AuthChainEvents []*gomatrixserverlib.HeaderedEvent `json:"auth_chain_events"`
 }
 
 // QueryRoomVersionCapabilitiesRequest asks for the default room version

roomserver/api/wrapper.go

@@ -25,7 +25,7 @@ import (
 // SendEvents to the roomserver The events are written with KindNew.
 func SendEvents(
 	ctx context.Context, rsAPI RoomserverInternalAPI,
-	kind Kind, events []gomatrixserverlib.HeaderedEvent,
+	kind Kind, events []*gomatrixserverlib.HeaderedEvent,
 	sendAsServer gomatrixserverlib.ServerName, txnID *TransactionID,
 ) error {
 	ires := make([]InputRoomEvent, len(events))
@@ -46,7 +46,7 @@ func SendEvents(
 // marked as `true` in haveEventIDs
 func SendEventWithState(
 	ctx context.Context, rsAPI RoomserverInternalAPI, kind Kind,
-	state *gomatrixserverlib.RespState, event gomatrixserverlib.HeaderedEvent,
+	state *gomatrixserverlib.RespState, event *gomatrixserverlib.HeaderedEvent,
 	haveEventIDs map[string]bool,
 ) error {
 	outliers, err := state.Events()
@@ -97,7 +97,7 @@ func SendInputRoomEvents(
 // If we are in the room then the event should be sent using the SendEvents method.
 func SendInvite(
 	ctx context.Context,
-	rsAPI RoomserverInternalAPI, inviteEvent gomatrixserverlib.HeaderedEvent,
+	rsAPI RoomserverInternalAPI, inviteEvent *gomatrixserverlib.HeaderedEvent,
 	inviteRoomState []gomatrixserverlib.InviteV2StrippedState,
 	sendAsServer gomatrixserverlib.ServerName, txnID *TransactionID,
 ) error {
@@ -134,7 +134,7 @@ func GetEvent(ctx context.Context, rsAPI RoomserverInternalAPI, eventID string)
 	if len(res.Events) != 1 {
 		return nil
 	}
-	return &res.Events[0]
+	return res.Events[0]
 }
 
 // GetStateEvent returns the current state event in the room or nil.

roomserver/auth/auth.go

@@ -25,7 +25,7 @@ import (
 func IsServerAllowed(
 	serverName gomatrixserverlib.ServerName,
 	serverCurrentlyInRoom bool,
-	authEvents []gomatrixserverlib.Event,
+	authEvents []*gomatrixserverlib.Event,
 ) bool {
 	historyVisibility := HistoryVisibilityForRoom(authEvents)
 
@@ -52,7 +52,7 @@ func IsServerAllowed(
 	return false
 }
 
-func HistoryVisibilityForRoom(authEvents []gomatrixserverlib.Event) string {
+func HistoryVisibilityForRoom(authEvents []*gomatrixserverlib.Event) string {
 	// https://matrix.org/docs/spec/client_server/r0.6.0#id87
 	// By default if no history_visibility is set, or if the value is not understood, the visibility is assumed to be shared.
 	visibility := "shared"
@@ -78,7 +78,7 @@ func HistoryVisibilityForRoom(authEvents []gomatrixserverlib.Event) string {
 	return visibility
 }
 
-func IsAnyUserOnServerWithMembership(serverName gomatrixserverlib.ServerName, authEvents []gomatrixserverlib.Event, wantMembership string) bool {
+func IsAnyUserOnServerWithMembership(serverName gomatrixserverlib.ServerName, authEvents []*gomatrixserverlib.Event, wantMembership string) bool {
 	for _, ev := range authEvents {
 		membership, err := ev.Membership()
 		if err != nil || membership != wantMembership {

roomserver/internal/alias.go

@@ -229,7 +229,7 @@ func (r *RoomserverInternalAPI) sendUpdatedAliasesEvent(
 	// Add auth events
 	authEvents := gomatrixserverlib.NewAuthEvents(nil)
 	for i := range res.StateEvents {
-		err = authEvents.AddEvent(&res.StateEvents[i].Event)
+		err = authEvents.AddEvent(res.StateEvents[i].Event)
 		if err != nil {
 			return err
 		}

roomserver/internal/helpers/auth.go

@@ -31,7 +31,7 @@ import (
 func CheckForSoftFail(
 	ctx context.Context,
 	db storage.Database,
-	event gomatrixserverlib.HeaderedEvent,
+	event *gomatrixserverlib.HeaderedEvent,
 	stateEventIDs []string,
 ) (bool, error) {
 	rewritesState := len(stateEventIDs) > 1
@@ -72,7 +72,7 @@ func CheckForSoftFail(
 	}
 
 	// Work out which of the state events we actually need.
-	stateNeeded := gomatrixserverlib.StateNeededForAuth([]gomatrixserverlib.Event{event.Unwrap()})
+	stateNeeded := gomatrixserverlib.StateNeededForAuth([]*gomatrixserverlib.Event{event.Unwrap()})
 
 	// Load the actual auth events from the database.
 	authEvents, err := loadAuthEvents(ctx, db, stateNeeded, authStateEntries)
@@ -93,7 +93,7 @@ func CheckForSoftFail(
 func CheckAuthEvents(
 	ctx context.Context,
 	db storage.Database,
-	event gomatrixserverlib.HeaderedEvent,
+	event *gomatrixserverlib.HeaderedEvent,
 	authEventIDs []string,
 ) ([]types.EventNID, error) {
 	// Grab the numeric IDs for the supplied auth state events from the database.
@@ -104,7 +104,7 @@ func CheckAuthEvents(
 	authStateEntries = types.DeduplicateStateEntries(authStateEntries)
 
 	// Work out which of the state events we actually need.
-	stateNeeded := gomatrixserverlib.StateNeededForAuth([]gomatrixserverlib.Event{event.Unwrap()})
+	stateNeeded := gomatrixserverlib.StateNeededForAuth([]*gomatrixserverlib.Event{event.Unwrap()})
 
 	// Load the actual auth events from the database.
 	authEvents, err := loadAuthEvents(ctx, db, stateNeeded, authStateEntries)
@@ -168,7 +168,7 @@ func (ae *authEvents) lookupEventWithEmptyStateKey(typeNID types.EventTypeNID) *
 	if !ok {
 		return nil
 	}
-	return &event.Event
+	return event.Event
 }
 
 func (ae *authEvents) lookupEvent(typeNID types.EventTypeNID, stateKey string) *gomatrixserverlib.Event {
@@ -187,7 +187,7 @@ func (ae *authEvents) lookupEvent(typeNID types.EventTypeNID, stateKey string) *
 	if !ok {
 		return nil
 	}
-	return &event.Event
+	return event.Event
 }
 
 // loadAuthEvents loads the events needed for authentication from the supplied room state.

roomserver/internal/helpers/helpers.go

@@ -67,7 +67,7 @@ func IsServerCurrentlyInRoom(ctx context.Context, db storage.Database, serverNam
 	if err != nil {
 		return false, err
 	}
-	gmslEvents := make([]gomatrixserverlib.Event, len(events))
+	gmslEvents := make([]*gomatrixserverlib.Event, len(events))
 	for i := range events {
 		gmslEvents[i] = events[i].Event
 	}
@@ -190,13 +190,13 @@ func StateBeforeEvent(ctx context.Context, db storage.Database, info types.RoomI
 
 func LoadEvents(
 	ctx context.Context, db storage.Database, eventNIDs []types.EventNID,
-) ([]gomatrixserverlib.Event, error) {
+) ([]*gomatrixserverlib.Event, error) {
 	stateEvents, err := db.Events(ctx, eventNIDs)
 	if err != nil {
 		return nil, err
 	}
 
-	result := make([]gomatrixserverlib.Event, len(stateEvents))
+	result := make([]*gomatrixserverlib.Event, len(stateEvents))
 	for i := range stateEvents {
 		result[i] = stateEvents[i].Event
 	}
@@ -205,7 +205,7 @@ func LoadEvents(
 
 func LoadStateEvents(
 	ctx context.Context, db storage.Database, stateEntries []types.StateEntry,
-) ([]gomatrixserverlib.Event, error) {
+) ([]*gomatrixserverlib.Event, error) {
 	eventNIDs := make([]types.EventNID, len(stateEntries))
 	for i := range stateEntries {
 		eventNIDs[i] = stateEntries[i].EventNID

roomserver/internal/input/input.go

@@ -92,7 +92,7 @@ func (r *Inputer) WriteOutputEvents(roomID string, updates []api.OutputEvent) er
 			})
 			if updates[i].NewRoomEvent.Event.Type() == "m.room.server_acl" && updates[i].NewRoomEvent.Event.StateKeyEquals("") {
 				ev := updates[i].NewRoomEvent.Event.Unwrap()
-				defer r.ACLs.OnServerACLUpdate(&ev)
+				defer r.ACLs.OnServerACLUpdate(ev)
 			}
 		}
 		logger.Infof("Producing to topic '%s'", r.OutputRoomEventTopic)

roomserver/internal/input/input_events.go

@@ -111,11 +111,11 @@ func (r *Inputer) processRoomEvent(
 
 	// if storing this event results in it being redacted then do so.
 	if !isRejected && redactedEventID == event.EventID() {
-		r, rerr := eventutil.RedactEvent(redactionEvent, &event)
+		r, rerr := eventutil.RedactEvent(redactionEvent, event)
 		if rerr != nil {
 			return "", fmt.Errorf("eventutil.RedactEvent: %w", rerr)
 		}
-		event = *r
+		event = r
 	}
 
 	// For outliers we can stop after we've stored the event itself as it
@@ -215,7 +215,7 @@ func (r *Inputer) calculateAndSetState(
 	input *api.InputRoomEvent,
 	roomInfo types.RoomInfo,
 	stateAtEvent *types.StateAtEvent,
-	event gomatrixserverlib.Event,
+	event *gomatrixserverlib.Event,
 	isRejected bool,
 ) error {
 	var err error

roomserver/internal/input/input_latest_events.go

@@ -50,7 +50,7 @@ func (r *Inputer) updateLatestEvents(
 	ctx context.Context,
 	roomInfo *types.RoomInfo,
 	stateAtEvent types.StateAtEvent,
-	event gomatrixserverlib.Event,
+	event *gomatrixserverlib.Event,
 	sendAsServer string,
 	transactionID *api.TransactionID,
 	rewritesState bool,
@@ -92,7 +92,7 @@ type latestEventsUpdater struct {
 	updater       *shared.LatestEventsUpdater
 	roomInfo      *types.RoomInfo
 	stateAtEvent  types.StateAtEvent
-	event         gomatrixserverlib.Event
+	event         *gomatrixserverlib.Event
 	transactionID *api.TransactionID
 	rewritesState bool
 	// Which server to send this event as.
@@ -140,7 +140,7 @@ func (u *latestEventsUpdater) doUpdateLatestEvents() error {
 	// Work out what the latest events are. This will include the new
 	// event if it is not already referenced.
 	extremitiesChanged, err := u.calculateLatest(
-		oldLatest, &u.event,
+		oldLatest, u.event,
 		types.StateAtEventAndReference{
 			EventReference: u.event.EventReference(),
 			StateAtEvent:   u.stateAtEvent,
@@ -373,7 +373,7 @@ func (u *latestEventsUpdater) makeOutputNewRoomEvent() (*api.OutputEvent, error)
 
 // extraEventsForIDs returns the full events for the event IDs given, but does not include the current event being
 // updated.
-func (u *latestEventsUpdater) extraEventsForIDs(roomVersion gomatrixserverlib.RoomVersion, eventIDs []string) ([]gomatrixserverlib.HeaderedEvent, error) {
+func (u *latestEventsUpdater) extraEventsForIDs(roomVersion gomatrixserverlib.RoomVersion, eventIDs []string) ([]*gomatrixserverlib.HeaderedEvent, error) {
 	var extraEventIDs []string
 	for _, e := range eventIDs {
 		if e == u.event.EventID() {
@@ -388,7 +388,7 @@ func (u *latestEventsUpdater) extraEventsForIDs(roomVersion gomatrixserverlib.Ro
 	if err != nil {
 		return nil, err
 	}
-	var h []gomatrixserverlib.HeaderedEvent
+	var h []*gomatrixserverlib.HeaderedEvent
 	for _, e := range extraEvents {
 		h = append(h, e.Headered(roomVersion))
 	}

roomserver/internal/input/input_membership.go

@@ -62,13 +62,13 @@ func (r *Inputer) updateMemberships(
 		if change.removedEventNID != 0 {
 			ev, _ := helpers.EventMap(events).Lookup(change.removedEventNID)
 			if ev != nil {
-				re = &ev.Event
+				re = ev.Event
 			}
 		}
 		if change.addedEventNID != 0 {
 			ev, _ := helpers.EventMap(events).Lookup(change.addedEventNID)
 			if ev != nil {
-				ae = &ev.Event
+				ae = ev.Event
 			}
 		}
 		if updates, err = r.updateMembership(updater, targetUserNID, re, ae, updates); err != nil {

roomserver/internal/perform/perform_backfill.go

@@ -83,7 +83,7 @@ func (r *Backfiller) PerformBackfill(
 	}
 
 	// Retrieve events from the list that was filled previously.
-	var loadedEvents []gomatrixserverlib.Event
+	var loadedEvents []*gomatrixserverlib.Event
 	loadedEvents, err = helpers.LoadEvents(ctx, r.DB, resultNIDs)
 	if err != nil {
 		return err
@@ -211,10 +211,10 @@ func (r *Backfiller) fetchAndStoreMissingEvents(ctx context.Context, roomVer gom
 		}
 	}
 
-	var newEvents []gomatrixserverlib.HeaderedEvent
+	var newEvents []*gomatrixserverlib.HeaderedEvent
 	for _, ev := range missingMap {
 		if ev != nil {
-			newEvents = append(newEvents, *ev)
+			newEvents = append(newEvents, ev)
 		}
 	}
 	util.GetLogger(ctx).Infof("Persisting %d new events", len(newEvents))
@@ -232,7 +232,7 @@ type backfillRequester struct {
 	// per-request state
 	servers                 []gomatrixserverlib.ServerName
 	eventIDToBeforeStateIDs map[string][]string
-	eventIDMap              map[string]gomatrixserverlib.Event
+	eventIDMap              map[string]*gomatrixserverlib.Event
 }
 
 func newBackfillRequester(
@@ -248,13 +248,13 @@ func newBackfillRequester(
 		fsAPI:                   fsAPI,
 		thisServer:              thisServer,
 		eventIDToBeforeStateIDs: make(map[string][]string),
-		eventIDMap:              make(map[string]gomatrixserverlib.Event),
+		eventIDMap:              make(map[string]*gomatrixserverlib.Event),
 		bwExtrems:               bwExtrems,
 		preferServer:            preferServer,
 	}
 }
 
-func (b *backfillRequester) StateIDsBeforeEvent(ctx context.Context, targetEvent gomatrixserverlib.HeaderedEvent) ([]string, error) {
+func (b *backfillRequester) StateIDsBeforeEvent(ctx context.Context, targetEvent *gomatrixserverlib.HeaderedEvent) ([]string, error) {
 	b.eventIDMap[targetEvent.EventID()] = targetEvent.Unwrap()
 	if ids, ok := b.eventIDToBeforeStateIDs[targetEvent.EventID()]; ok {
 		return ids, nil
@@ -305,7 +305,7 @@ FederationHit:
 	return nil, lastErr
 }
 
-func (b *backfillRequester) calculateNewStateIDs(targetEvent, prevEvent gomatrixserverlib.Event, prevEventStateIDs []string) []string {
+func (b *backfillRequester) calculateNewStateIDs(targetEvent, prevEvent *gomatrixserverlib.Event, prevEventStateIDs []string) []string {
 	newStateIDs := prevEventStateIDs[:]
 	if prevEvent.StateKey() == nil {
 		// state is the same as the previous event
@@ -343,7 +343,7 @@ func (b *backfillRequester) calculateNewStateIDs(targetEvent, prevEvent gomatrix
 }
 
 func (b *backfillRequester) StateBeforeEvent(ctx context.Context, roomVer gomatrixserverlib.RoomVersion,
-	event gomatrixserverlib.HeaderedEvent, eventIDs []string) (map[string]*gomatrixserverlib.Event, error) {
+	event *gomatrixserverlib.HeaderedEvent, eventIDs []string) (map[string]*gomatrixserverlib.Event, error) {
 
 	// try to fetch the events from the database first
 	events, err := b.ProvideEvents(roomVer, eventIDs)
@@ -355,7 +355,7 @@ func (b *backfillRequester) StateBeforeEvent(ctx context.Context, roomVer gomatr
 		if len(events) == len(eventIDs) {
 			result := make(map[string]*gomatrixserverlib.Event)
 			for i := range events {
-				result[events[i].EventID()] = &events[i]
+				result[events[i].EventID()] = events[i]
 				b.eventIDMap[events[i].EventID()] = events[i]
 			}
 			return result, nil
@@ -372,7 +372,7 @@ func (b *backfillRequester) StateBeforeEvent(ctx context.Context, roomVer gomatr
 		return nil, err
 	}
 	for eventID, ev := range result {
-		b.eventIDMap[eventID] = *ev
+		b.eventIDMap[eventID] = ev
 	}
 	return result, nil
 }
@@ -476,7 +476,7 @@ func (b *backfillRequester) Backfill(ctx context.Context, server gomatrixserverl
 	return tx, err
 }
 
-func (b *backfillRequester) ProvideEvents(roomVer gomatrixserverlib.RoomVersion, eventIDs []string) ([]gomatrixserverlib.Event, error) {
+func (b *backfillRequester) ProvideEvents(roomVer gomatrixserverlib.RoomVersion, eventIDs []string) ([]*gomatrixserverlib.Event, error) {
 	ctx := context.Background()
 	nidMap, err := b.db.EventNIDs(ctx, eventIDs)
 	if err != nil {
@@ -494,7 +494,7 @@ func (b *backfillRequester) ProvideEvents(roomVer gomatrixserverlib.RoomVersion,
 		logrus.WithError(err).WithField("event_nids", eventNIDs).Error("Failed to load events")
 		return nil, err
 	}
-	events := make([]gomatrixserverlib.Event, len(eventsWithNids))
+	events := make([]*gomatrixserverlib.Event, len(eventsWithNids))
 	for i := range eventsWithNids {
 		events[i] = eventsWithNids[i].Event
 	}
@@ -522,7 +522,7 @@ func joinEventsFromHistoryVisibility(
 	if err != nil {
 		return nil, err
 	}
-	events := make([]gomatrixserverlib.Event, len(stateEvents))
+	events := make([]*gomatrixserverlib.Event, len(stateEvents))
 	for i := range stateEvents {
 		events[i] = stateEvents[i].Event
 	}
@@ -545,7 +545,7 @@ func joinEventsFromHistoryVisibility(
 	return db.Events(ctx, joinEventNIDs)
 }
 
-func persistEvents(ctx context.Context, db storage.Database, events []gomatrixserverlib.HeaderedEvent) (types.RoomNID, map[string]types.Event) {
+func persistEvents(ctx context.Context, db storage.Database, events []*gomatrixserverlib.HeaderedEvent) (types.RoomNID, map[string]types.Event) {
 	var roomNID types.RoomNID
 	backfilledEventMap := make(map[string]types.Event)
 	for j, ev := range events {
@@ -573,7 +573,7 @@ func persistEvents(ctx context.Context, db storage.Database, events []gomatrixse
 		// redacted, which we don't care about since we aren't returning it in this backfill.
 		if redactedEventID == ev.EventID() {
 			eventToRedact := ev.Unwrap()
-			redactedEvent, err := eventutil.RedactEvent(redactionEvent, &eventToRedact)
+			redactedEvent, err := eventutil.RedactEvent(redactionEvent, eventToRedact)
 			if err != nil {
 				logrus.WithError(err).WithField("event_id", ev.EventID()).Error("Failed to redact event")
 				continue

roomserver/internal/perform/perform_invite.go

@@ -198,7 +198,7 @@ func (r *Inviter) PerformInvite(
 		}
 
 		unwrapped := event.Unwrap()
-		outputUpdates, err := helpers.UpdateToInviteMembership(updater, &unwrapped, nil, req.Event.RoomVersion)
+		outputUpdates, err := helpers.UpdateToInviteMembership(updater, unwrapped, nil, req.Event.RoomVersion)
 		if err != nil {
 			return nil, fmt.Errorf("updateToInviteMembership: %w", err)
 		}
@@ -248,11 +248,11 @@ func buildInviteStrippedState(
 		return nil, err
 	}
 	inviteState := []gomatrixserverlib.InviteV2StrippedState{
-		gomatrixserverlib.NewInviteV2StrippedState(&input.Event.Event),
+		gomatrixserverlib.NewInviteV2StrippedState(input.Event.Event),
 	}
 	stateEvents = append(stateEvents, types.Event{Event: input.Event.Unwrap()})
 	for _, event := range stateEvents {
-		inviteState = append(inviteState, gomatrixserverlib.NewInviteV2StrippedState(&event.Event))
+		inviteState = append(inviteState, gomatrixserverlib.NewInviteV2StrippedState(event.Event))
 	}
 	return inviteState, nil
 }

roomserver/internal/query/query.go

@@ -416,7 +416,7 @@ func (r *Queryer) QueryMissingEvents(
 		return err
 	}
 
-	response.Events = make([]gomatrixserverlib.HeaderedEvent, 0, len(loadedEvents)-len(eventsToFilter))
+	response.Events = make([]*gomatrixserverlib.HeaderedEvent, 0, len(loadedEvents)-len(eventsToFilter))
 	for _, event := range loadedEvents {
 		if !eventsToFilter[event.EventID()] {
 			roomVersion, verr := r.roomVersion(event.RoomID())
@@ -485,7 +485,7 @@ func (r *Queryer) QueryStateAndAuthChain(
 	return err
 }
 
-func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo types.RoomInfo, eventIDs []string) ([]gomatrixserverlib.Event, error) {
+func (r *Queryer) loadStateAtEventIDs(ctx context.Context, roomInfo types.RoomInfo, eventIDs []string) ([]*gomatrixserverlib.Event, error) {
 	roomState := state.NewStateResolution(r.DB, roomInfo)
 	prevStates, err := r.DB.StateAtEventIDs(ctx, eventIDs)
 	if err != nil {
@@ -516,13 +516,13 @@ type eventsFromIDs func(context.Context, []string) ([]types.Event, error)
 // given events. Will *not* error if we don't have all auth events.
 func getAuthChain(
 	ctx context.Context, fn eventsFromIDs, authEventIDs []string,
-) ([]gomatrixserverlib.Event, error) {
+) ([]*gomatrixserverlib.Event, error) {
 	// List of event IDs to fetch. On each pass, these events will be requested
 	// from the database and the `eventsToFetch` will be updated with any new
 	// events that we have learned about and need to find. When `eventsToFetch`
 	// is eventually empty, we should have reached the end of the chain.
 	eventsToFetch := authEventIDs
-	authEventsMap := make(map[string]gomatrixserverlib.Event)
+	authEventsMap := make(map[string]*gomatrixserverlib.Event)
 
 	for len(eventsToFetch) > 0 {
 		// Try to retrieve the events from the database.
@@ -553,7 +553,7 @@ func getAuthChain(
 
 	// We've now retrieved all of the events we can. Flatten them down into an
 	// array and return them.
-	var authEvents []gomatrixserverlib.Event
+	var authEvents []*gomatrixserverlib.Event
 	for _, event := range authEventsMap {
 		authEvents = append(authEvents, event)
 	}

roomserver/internal/query/query_test.go

@@ -26,12 +26,12 @@ import (
 
 // used to implement RoomserverInternalAPIEventDB to test getAuthChain
 type getEventDB struct {
-	eventMap map[string]gomatrixserverlib.Event
+	eventMap map[string]*gomatrixserverlib.Event
 }
 
 func createEventDB() *getEventDB {
 	return &getEventDB{
-		eventMap: make(map[string]gomatrixserverlib.Event),
+		eventMap: make(map[string]*gomatrixserverlib.Event),
 	}
 }
 

roomserver/roomserver_test.go

@@ -94,7 +94,7 @@ type fledglingEvent struct {
 	RoomID   string
 }
 
-func mustCreateEvents(t *testing.T, roomVer gomatrixserverlib.RoomVersion, events []fledglingEvent) (result []gomatrixserverlib.HeaderedEvent) {
+func mustCreateEvents(t *testing.T, roomVer gomatrixserverlib.RoomVersion, events []fledglingEvent) (result []*gomatrixserverlib.HeaderedEvent) {
 	t.Helper()
 	depth := int64(1)
 	seed := make([]byte, ed25519.SeedSize) // zero seed
@@ -143,16 +143,15 @@ func mustCreateEvents(t *testing.T, roomVer gomatrixserverlib.RoomVersion, event
 	return
 }
 
-func mustLoadRawEvents(t *testing.T, ver gomatrixserverlib.RoomVersion, events []json.RawMessage) []gomatrixserverlib.HeaderedEvent {
+func mustLoadRawEvents(t *testing.T, ver gomatrixserverlib.RoomVersion, events []json.RawMessage) []*gomatrixserverlib.HeaderedEvent {
 	t.Helper()
-	hs := make([]gomatrixserverlib.HeaderedEvent, len(events))
+	hs := make([]*gomatrixserverlib.HeaderedEvent, len(events))
 	for i := range events {
 		e, err := gomatrixserverlib.NewEventFromTrustedJSON(events[i], false, ver)
 		if err != nil {
 			t.Fatalf("cannot load test data: " + err.Error())
 		}
-		h := e.Headered(ver)
+		hs[i] = e.Headered(ver)
-		hs[i] = h
 	}
 	return hs
 }
@@ -187,7 +186,7 @@ func mustCreateRoomserverAPI(t *testing.T) (api.RoomserverInternalAPI, *dummyPro
 	), dp
 }
 
-func mustSendEvents(t *testing.T, ver gomatrixserverlib.RoomVersion, events []json.RawMessage) (api.RoomserverInternalAPI, *dummyProducer, []gomatrixserverlib.HeaderedEvent) {
+func mustSendEvents(t *testing.T, ver gomatrixserverlib.RoomVersion, events []json.RawMessage) (api.RoomserverInternalAPI, *dummyProducer, []*gomatrixserverlib.HeaderedEvent) {
 	t.Helper()
 	rsAPI, dp := mustCreateRoomserverAPI(t)
 	hevents := mustLoadRawEvents(t, ver, events)

roomserver/state/state.go

@@ -522,7 +522,7 @@ func init() {
 // Returns a numeric ID for the snapshot of the state before the event.
 func (v StateResolution) CalculateAndStoreStateBeforeEvent(
 	ctx context.Context,
-	event gomatrixserverlib.Event,
+	event *gomatrixserverlib.Event,
 	isRejected bool,
 ) (types.StateSnapshotNID, error) {
 	// Load the state at the prev events.
@@ -689,17 +689,17 @@ func (v StateResolution) calculateStateAfterManyEvents(
 // TODO: Some of this can possibly be deduplicated
 func ResolveConflictsAdhoc(
 	version gomatrixserverlib.RoomVersion,
-	events []gomatrixserverlib.Event,
+	events []*gomatrixserverlib.Event,
-	authEvents []gomatrixserverlib.Event,
+	authEvents []*gomatrixserverlib.Event,
-) ([]gomatrixserverlib.Event, error) {
+) ([]*gomatrixserverlib.Event, error) {
 	type stateKeyTuple struct {
 		Type     string
 		StateKey string
 	}
 
 	// Prepare our data structures.
-	eventMap := make(map[stateKeyTuple][]gomatrixserverlib.Event)
+	eventMap := make(map[stateKeyTuple][]*gomatrixserverlib.Event)
-	var conflicted, notConflicted, resolved []gomatrixserverlib.Event
+	var conflicted, notConflicted, resolved []*gomatrixserverlib.Event
 
 	// Run through all of the events that we were given and sort them
 	// into a map, sorted by (event_type, state_key) tuple. This means
@@ -868,15 +868,15 @@ func (v StateResolution) resolveConflictsV2(
 
 	// For each conflicted event, we will add a new set of auth events. Auth
 	// events may be duplicated across these sets but that's OK.
-	authSets := make(map[string][]gomatrixserverlib.Event)
+	authSets := make(map[string][]*gomatrixserverlib.Event)
-	var authEvents []gomatrixserverlib.Event
+	var authEvents []*gomatrixserverlib.Event
-	var authDifference []gomatrixserverlib.Event
+	var authDifference []*gomatrixserverlib.Event
 
 	// For each conflicted event, let's try and get the needed auth events.
 	for _, conflictedEvent := range conflictedEvents {
 		// Work out which auth events we need to load.
 		key := conflictedEvent.EventID()
-		needed := gomatrixserverlib.StateNeededForAuth([]gomatrixserverlib.Event{conflictedEvent})
+		needed := gomatrixserverlib.StateNeededForAuth([]*gomatrixserverlib.Event{conflictedEvent})
 
 		// Find the numeric IDs for the necessary state keys.
 		var neededStateKeys []string
@@ -909,7 +909,7 @@ func (v StateResolution) resolveConflictsV2(
 
 	// This function helps us to work out whether an event exists in one of the
 	// auth sets.
-	isInAuthList := func(k string, event gomatrixserverlib.Event) bool {
+	isInAuthList := func(k string, event *gomatrixserverlib.Event) bool {
 		for _, e := range authSets[k] {
 			if e.EventID() == event.EventID() {
 				return true
@@ -919,7 +919,7 @@ func (v StateResolution) resolveConflictsV2(
 	}
 
 	// This function works out if an event exists in all of the auth sets.
-	isInAllAuthLists := func(event gomatrixserverlib.Event) bool {
+	isInAllAuthLists := func(event *gomatrixserverlib.Event) bool {
 		found := true
 		for k := range authSets {
 			found = found && isInAuthList(k, event)
@@ -1006,7 +1006,7 @@ func (v StateResolution) stateKeyTuplesNeeded(stateKeyNIDMap map[string]types.Ev
 // Returns an error if there was a problem talking to the database.
 func (v StateResolution) loadStateEvents(
 	ctx context.Context, entries []types.StateEntry,
-) ([]gomatrixserverlib.Event, map[string]types.StateEntry, error) {
+) ([]*gomatrixserverlib.Event, map[string]types.StateEntry, error) {
 	eventNIDs := make([]types.EventNID, len(entries))
 	for i := range entries {
 		eventNIDs[i] = entries[i].EventNID
@@ -1016,7 +1016,7 @@ func (v StateResolution) loadStateEvents(
 		return nil, nil, err
 	}
 	eventIDMap := map[string]types.StateEntry{}
-	result := make([]gomatrixserverlib.Event, len(entries))
+	result := make([]*gomatrixserverlib.Event, len(entries))
 	for i := range entries {
 		event, ok := eventMap(events).lookup(entries[i].EventNID)
 		if !ok {

roomserver/storage/interface.go

@@ -69,7 +69,7 @@ type Database interface {
 	SnapshotNIDFromEventID(ctx context.Context, eventID string) (types.StateSnapshotNID, error)
 	// Stores a matrix room event in the database. Returns the room NID, the state snapshot and the redacted event ID if any, or an error.
 	StoreEvent(
-		ctx context.Context, event gomatrixserverlib.Event, txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID,
+		ctx context.Context, event *gomatrixserverlib.Event, txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID,
 		isRejected bool,
 	) (types.RoomNID, types.StateAtEvent, *gomatrixserverlib.Event, string, error)
 	// Look up the state entries for a list of string event IDs

roomserver/storage/shared/storage.go

@@ -388,7 +388,7 @@ func (d *Database) GetLatestEventsForUpdate(
 
 // nolint:gocyclo
 func (d *Database) StoreEvent(
-	ctx context.Context, event gomatrixserverlib.Event,
+	ctx context.Context, event *gomatrixserverlib.Event,
 	txnAndSessionID *api.TransactionID, authEventNIDs []types.EventNID, isRejected bool,
 ) (types.RoomNID, types.StateAtEvent, *gomatrixserverlib.Event, string, error) {
 	var (
@@ -611,7 +611,7 @@ func (d *Database) assignStateKeyNID(
 	return eventStateKeyNID, err
 }
 
-func extractRoomVersionFromCreateEvent(event gomatrixserverlib.Event) (
+func extractRoomVersionFromCreateEvent(event *gomatrixserverlib.Event) (
 	gomatrixserverlib.RoomVersion, error,
 ) {
 	var err error
@@ -651,7 +651,7 @@ func extractRoomVersionFromCreateEvent(event gomatrixserverlib.Event) (
 // Returns the redaction event and the event ID of the redacted event if this call resulted in a redaction.
 // nolint:gocyclo
 func (d *Database) handleRedactions(
-	ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event gomatrixserverlib.Event,
+	ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event *gomatrixserverlib.Event,
 ) (*gomatrixserverlib.Event, string, error) {
 	var err error
 	isRedactionEvent := event.Type() == gomatrixserverlib.MRoomRedaction && event.StateKey() == nil
@@ -703,12 +703,12 @@ func (d *Database) handleRedactions(
 		err = fmt.Errorf("d.RedactionsTable.MarkRedactionValidated: %w", err)
 	}
 
-	return &redactionEvent.Event, redactedEvent.EventID(), err
+	return redactionEvent.Event, redactedEvent.EventID(), err
 }
 
 // loadRedactionPair returns both the redaction event and the redacted event, else nil.
 func (d *Database) loadRedactionPair(
-	ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event gomatrixserverlib.Event,
+	ctx context.Context, txn *sql.Tx, eventNID types.EventNID, event *gomatrixserverlib.Event,
 ) (*types.Event, *types.Event, bool, error) {
 	var redactionEvent, redactedEvent *types.Event
 	var info *tables.RedactionInfo
@@ -814,8 +814,7 @@ func (d *Database) GetStateEvent(ctx context.Context, roomID, evType, stateKey s
 			if err != nil {
 				return nil, err
 			}
-			h := ev.Headered(roomInfo.RoomVersion)
+			return ev.Headered(roomInfo.RoomVersion), nil
-			return &h, nil
 		}
 	}
 
@@ -934,12 +933,11 @@ func (d *Database) GetBulkStateContent(ctx context.Context, roomIDs []string, tu
 		if err != nil {
 			return nil, fmt.Errorf("GetBulkStateContent: failed to load event JSON for event NID %v : %w", events[i].EventNID, err)
 		}
-		hev := ev.Headered(roomVer)
 		result[i] = tables.StrippedEvent{
 			EventType:    ev.Type(),
 			RoomID:       ev.RoomID(),
 			StateKey:     *ev.StateKey(),
-			ContentValue: tables.ExtractContentValue(&hev),
+			ContentValue: tables.ExtractContentValue(ev.Headered(roomVer)),
 		}
 	}
 

roomserver/types/types.go

@@ -126,7 +126,7 @@ type StateAtEventAndReference struct {
 // It is when performing bulk event lookup in the database.
 type Event struct {
 	EventNID EventNID
-	gomatrixserverlib.Event
+	*gomatrixserverlib.Event
 }
 
 const (

syncapi/consumers/roomserver.go

@@ -118,7 +118,7 @@ func (s *OutputRoomEventConsumer) onMessage(msg *sarama.ConsumerMessage) error {
 func (s *OutputRoomEventConsumer) onRedactEvent(
 	ctx context.Context, msg api.OutputRedactedEvent,
 ) error {
-	err := s.db.RedactEvent(ctx, msg.RedactedEventID, &msg.RedactedBecause)
+	err := s.db.RedactEvent(ctx, msg.RedactedEventID, msg.RedactedBecause)
 	if err != nil {
 		log.WithError(err).Error("RedactEvent error'd")
 		return err
@@ -156,7 +156,7 @@ func (s *OutputRoomEventConsumer) onNewRoomEvent(
 
 	pduPos, err := s.db.WriteEvent(
 		ctx,
-		&ev,
+		ev,
 		addsStateEvents,
 		msg.AddsStateEventIDs,
 		msg.RemovesStateEventIDs,
@@ -174,12 +174,12 @@ func (s *OutputRoomEventConsumer) onNewRoomEvent(
 		return nil
 	}
 
-	if pduPos, err = s.notifyJoinedPeeks(ctx, &ev, pduPos); err != nil {
+	if pduPos, err = s.notifyJoinedPeeks(ctx, ev, pduPos); err != nil {
 		logrus.WithError(err).Errorf("Failed to notifyJoinedPeeks for PDU pos %d", pduPos)
 		return err
 	}
 
-	s.notifier.OnNewEvent(&ev, "", nil, types.NewStreamToken(pduPos, 0, nil))
+	s.notifier.OnNewEvent(ev, "", nil, types.NewStreamToken(pduPos, 0, nil))
 
 	return nil
 }
@@ -197,8 +197,8 @@ func (s *OutputRoomEventConsumer) onOldRoomEvent(
 	// from confusing clients into thinking they've joined/left rooms.
 	pduPos, err := s.db.WriteEvent(
 		ctx,
-		&ev,
+		ev,
-		[]gomatrixserverlib.HeaderedEvent{},
+		[]*gomatrixserverlib.HeaderedEvent{},
 		[]string{},           // adds no state
 		[]string{},           // removes no state
 		nil,                  // no transaction
@@ -213,12 +213,12 @@ func (s *OutputRoomEventConsumer) onOldRoomEvent(
 		return nil
 	}
 
-	if pduPos, err = s.notifyJoinedPeeks(ctx, &ev, pduPos); err != nil {
+	if pduPos, err = s.notifyJoinedPeeks(ctx, ev, pduPos); err != nil {
 		logrus.WithError(err).Errorf("Failed to notifyJoinedPeeks for PDU pos %d", pduPos)
 		return err
 	}
 
-	s.notifier.OnNewEvent(&ev, "", nil, types.NewStreamToken(pduPos, 0, nil))
+	s.notifier.OnNewEvent(ev, "", nil, types.NewStreamToken(pduPos, 0, nil))
 
 	return nil
 }
@@ -267,7 +267,7 @@ func (s *OutputRoomEventConsumer) onNewInviteEvent(
 		}).Panicf("roomserver output log: write invite failure")
 		return nil
 	}
-	s.notifier.OnNewEvent(&msg.Event, "", nil, types.NewStreamToken(pduPos, 0, nil))
+	s.notifier.OnNewEvent(msg.Event, "", nil, types.NewStreamToken(pduPos, 0, nil))
 	return nil
 }
 
@@ -309,7 +309,7 @@ func (s *OutputRoomEventConsumer) onNewPeek(
 	return nil
 }
 
-func (s *OutputRoomEventConsumer) updateStateEvent(event gomatrixserverlib.HeaderedEvent) (gomatrixserverlib.HeaderedEvent, error) {
+func (s *OutputRoomEventConsumer) updateStateEvent(event *gomatrixserverlib.HeaderedEvent) (*gomatrixserverlib.HeaderedEvent, error) {
 	if event.StateKey() == nil {
 		return event, nil
 	}

syncapi/routing/messages.go

@@ -235,7 +235,7 @@ func (r *messagesReq) retrieveEvents() (
 		return
 	}
 
-	var events []gomatrixserverlib.HeaderedEvent
+	var events []*gomatrixserverlib.HeaderedEvent
 	util.GetLogger(r.ctx).WithField("start", start).WithField("end", end).Infof("Fetched %d events locally", len(streamEvents))
 
 	// There can be two reasons for streamEvents to be empty: either we've
@@ -259,8 +259,8 @@ func (r *messagesReq) retrieveEvents() (
 	// Sort the events to ensure we send them in the right order.
 	if r.backwardOrdering {
 		// This reverses the array from old->new to new->old
-		reversed := func(in []gomatrixserverlib.HeaderedEvent) []gomatrixserverlib.HeaderedEvent {
+		reversed := func(in []*gomatrixserverlib.HeaderedEvent) []*gomatrixserverlib.HeaderedEvent {
-			out := make([]gomatrixserverlib.HeaderedEvent, len(in))
+			out := make([]*gomatrixserverlib.HeaderedEvent, len(in))
 			for i := 0; i < len(in); i++ {
 				out[i] = in[len(in)-i-1]
 			}
@@ -287,7 +287,7 @@ func (r *messagesReq) retrieveEvents() (
 }
 
 // nolint:gocyclo
-func (r *messagesReq) filterHistoryVisible(events []gomatrixserverlib.HeaderedEvent) []gomatrixserverlib.HeaderedEvent {
+func (r *messagesReq) filterHistoryVisible(events []*gomatrixserverlib.HeaderedEvent) []*gomatrixserverlib.HeaderedEvent {
 	// TODO FIXME: We don't fully implement history visibility yet. To avoid leaking events which the
 	// user shouldn't see, we check the recent events and remove any prior to the join event of the user
 	// which is equiv to history_visibility: joined
@@ -302,8 +302,8 @@ func (r *messagesReq) filterHistoryVisible(events []gomatrixserverlib.HeaderedEv
 		}
 	}
 
-	var result []gomatrixserverlib.HeaderedEvent
+	var result []*gomatrixserverlib.HeaderedEvent
-	var eventsToCheck []gomatrixserverlib.HeaderedEvent
+	var eventsToCheck []*gomatrixserverlib.HeaderedEvent
 	if joinEventIndex != -1 {
 		if r.backwardOrdering {
 			result = events[:joinEventIndex+1]
@@ -313,7 +313,7 @@ func (r *messagesReq) filterHistoryVisible(events []gomatrixserverlib.HeaderedEv
 			eventsToCheck = append(eventsToCheck, result[len(result)-1])
 		}
 	} else {
-		eventsToCheck = []gomatrixserverlib.HeaderedEvent{events[0], events[len(events)-1]}
+		eventsToCheck = []*gomatrixserverlib.HeaderedEvent{events[0], events[len(events)-1]}
 		result = events
 	}
 	// make sure the user was in the room for both the earliest and latest events, we need this because
@@ -337,9 +337,9 @@ func (r *messagesReq) filterHistoryVisible(events []gomatrixserverlib.HeaderedEv
 		for i := range queryRes.StateEvents {
 			switch queryRes.StateEvents[i].Type() {
 			case gomatrixserverlib.MRoomMember:
-				membershipEvent = &queryRes.StateEvents[i]
+				membershipEvent = queryRes.StateEvents[i]
 			case gomatrixserverlib.MRoomHistoryVisibility:
-				hisVisEvent = &queryRes.StateEvents[i]
+				hisVisEvent = queryRes.StateEvents[i]
 			}
 		}
 		if hisVisEvent == nil {
@@ -365,12 +365,12 @@ func (r *messagesReq) filterHistoryVisible(events []gomatrixserverlib.HeaderedEv
 	}
 	if !wasJoined {
 		util.GetLogger(r.ctx).WithField("num_events", len(events)).Warnf("%s was not joined to room during these events, omitting them", r.device.UserID)
-		return []gomatrixserverlib.HeaderedEvent{}
+		return []*gomatrixserverlib.HeaderedEvent{}
 	}
 	return result
 }
 
-func (r *messagesReq) getStartEnd(events []gomatrixserverlib.HeaderedEvent) (start, end types.TopologyToken, err error) {
+func (r *messagesReq) getStartEnd(events []*gomatrixserverlib.HeaderedEvent) (start, end types.TopologyToken, err error) {
 	start, err = r.db.EventPositionInTopology(
 		r.ctx, events[0].EventID(),
 	)
@@ -410,7 +410,7 @@ func (r *messagesReq) getStartEnd(events []gomatrixserverlib.HeaderedEvent) (sta
 // Returns an error if there was an issue talking with the database or
 // backfilling.
 func (r *messagesReq) handleEmptyEventsSlice() (
-	events []gomatrixserverlib.HeaderedEvent, err error,
+	events []*gomatrixserverlib.HeaderedEvent, err error,
 ) {
 	backwardExtremities, err := r.db.BackwardExtremitiesForRoom(r.ctx, r.roomID)
 
@@ -424,7 +424,7 @@ func (r *messagesReq) handleEmptyEventsSlice() (
 	} else {
 		// If not, it means the slice was empty because we reached the room's
 		// creation, so return an empty slice.
-		events = []gomatrixserverlib.HeaderedEvent{}
+		events = []*gomatrixserverlib.HeaderedEvent{}
 	}
 
 	return
@@ -436,7 +436,7 @@ func (r *messagesReq) handleEmptyEventsSlice() (
 // through backfilling if needed.
 // Returns an error if there was an issue while backfilling.
 func (r *messagesReq) handleNonEmptyEventsSlice(streamEvents []types.StreamEvent) (
-	events []gomatrixserverlib.HeaderedEvent, err error,
+	events []*gomatrixserverlib.HeaderedEvent, err error,
 ) {
 	// Check if we have enough events.
 	isSetLargeEnough := len(streamEvents) >= r.limit
@@ -464,7 +464,7 @@ func (r *messagesReq) handleNonEmptyEventsSlice(streamEvents []types.StreamEvent
 	// Backfill is needed if we've reached a backward extremity and need more
 	// events. It's only needed if the direction is backward.
 	if len(backwardExtremities) > 0 && !isSetLargeEnough && r.backwardOrdering {
-		var pdus []gomatrixserverlib.HeaderedEvent
+		var pdus []*gomatrixserverlib.HeaderedEvent
 		// Only ask the remote server for enough events to reach the limit.
 		pdus, err = r.backfill(r.roomID, backwardExtremities, r.limit-len(streamEvents))
 		if err != nil {
@@ -482,7 +482,7 @@ func (r *messagesReq) handleNonEmptyEventsSlice(streamEvents []types.StreamEvent
 	return
 }
 
-type eventsByDepth []gomatrixserverlib.HeaderedEvent
+type eventsByDepth []*gomatrixserverlib.HeaderedEvent
 
 func (e eventsByDepth) Len() int {
 	return len(e)
@@ -503,7 +503,7 @@ func (e eventsByDepth) Less(i, j int) bool {
 // event, or if there is no remote homeserver to contact.
 // Returns an error if there was an issue with retrieving the list of servers in
 // the room or sending the request.
-func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]string, limit int) ([]gomatrixserverlib.HeaderedEvent, error) {
+func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]string, limit int) ([]*gomatrixserverlib.HeaderedEvent, error) {
 	var res api.PerformBackfillResponse
 	err := r.rsAPI.PerformBackfill(context.Background(), &api.PerformBackfillRequest{
 		RoomID:               roomID,
@@ -531,8 +531,8 @@ func (r *messagesReq) backfill(roomID string, backwardsExtremities map[string][]
 	for i := range res.Events {
 		_, err = r.db.WriteEvent(
 			context.Background(),
-			&res.Events[i],
+			res.Events[i],
-			[]gomatrixserverlib.HeaderedEvent{},
+			[]*gomatrixserverlib.HeaderedEvent{},
 			[]string{},
 			[]string{},
 			nil, true,

syncapi/storage/interface.go

@@ -39,11 +39,11 @@ type Database interface {
 	// If an event is not found in the database then it will be omitted from the list.
 	// Returns an error if there was a problem talking with the database.
 	// Does not include any transaction IDs in the returned events.
-	Events(ctx context.Context, eventIDs []string) ([]gomatrixserverlib.HeaderedEvent, error)
+	Events(ctx context.Context, eventIDs []string) ([]*gomatrixserverlib.HeaderedEvent, error)
 	// WriteEvent into the database. It is not safe to call this function from multiple goroutines, as it would create races
 	// when generating the sync stream position for this event. Returns the sync stream position for the inserted event.
 	// Returns an error if there was a problem inserting this event.
-	WriteEvent(ctx context.Context, ev *gomatrixserverlib.HeaderedEvent, addStateEvents []gomatrixserverlib.HeaderedEvent,
+	WriteEvent(ctx context.Context, ev *gomatrixserverlib.HeaderedEvent, addStateEvents []*gomatrixserverlib.HeaderedEvent,
 		addStateEventIDs []string, removeStateEventIDs []string, transactionID *api.TransactionID, excludeFromSync bool) (types.StreamPosition, error)
 	// PurgeRoomState completely purges room state from the sync API. This is done when
 	// receiving an output event that completely resets the state.
@@ -55,7 +55,7 @@ type Database interface {
 	// GetStateEventsForRoom fetches the state events for a given room.
 	// Returns an empty slice if no state events could be found for this room.
 	// Returns an error if there was an issue with the retrieval.
-	GetStateEventsForRoom(ctx context.Context, roomID string, stateFilterPart *gomatrixserverlib.StateFilter) (stateEvents []gomatrixserverlib.HeaderedEvent, err error)
+	GetStateEventsForRoom(ctx context.Context, roomID string, stateFilterPart *gomatrixserverlib.StateFilter) (stateEvents []*gomatrixserverlib.HeaderedEvent, err error)
 	// SyncPosition returns the latest positions for syncing.
 	SyncPosition(ctx context.Context) (types.StreamingToken, error)
 	// IncrementalSync returns all the data needed in order to create an incremental
@@ -84,7 +84,7 @@ type Database interface {
 	// AddInviteEvent stores a new invite event for a user.
 	// If the invite was successfully stored this returns the stream ID it was stored at.
 	// Returns an error if there was a problem communicating with the database.
-	AddInviteEvent(ctx context.Context, inviteEvent gomatrixserverlib.HeaderedEvent) (types.StreamPosition, error)
+	AddInviteEvent(ctx context.Context, inviteEvent *gomatrixserverlib.HeaderedEvent) (types.StreamPosition, error)
 	// RetireInviteEvent removes an old invite event from the database. Returns the new position of the retired invite.
 	// Returns an error if there was a problem communicating with the database.
 	RetireInviteEvent(ctx context.Context, inviteEventID string) (types.StreamPosition, error)
@@ -116,7 +116,7 @@ type Database interface {
 	// StreamEventsToEvents converts streamEvent to Event. If device is non-nil and
 	// matches the streamevent.transactionID device then the transaction ID gets
 	// added to the unsigned section of the output event.
-	StreamEventsToEvents(device *userapi.Device, in []types.StreamEvent) []gomatrixserverlib.HeaderedEvent
+	StreamEventsToEvents(device *userapi.Device, in []types.StreamEvent) []*gomatrixserverlib.HeaderedEvent
 	// AddSendToDevice increases the EDU position in the cache and returns the stream position.
 	AddSendToDevice() types.StreamPosition
 	// SendToDeviceUpdatesForSync returns a list of send-to-device updates. It returns three lists:

syncapi/storage/postgres/current_room_state_table.go

@@ -195,7 +195,7 @@ func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(
 func (s *currentRoomStateStatements) SelectCurrentState(
 	ctx context.Context, txn *sql.Tx, roomID string,
 	stateFilter *gomatrixserverlib.StateFilter,
-) ([]gomatrixserverlib.HeaderedEvent, error) {
+) ([]*gomatrixserverlib.HeaderedEvent, error) {
 	stmt := sqlutil.TxStmt(txn, s.selectCurrentStateStmt)
 	rows, err := stmt.QueryContext(ctx, roomID,
 		pq.StringArray(stateFilter.Senders),
@@ -231,7 +231,7 @@ func (s *currentRoomStateStatements) DeleteRoomStateForRoom(
 
 func (s *currentRoomStateStatements) UpsertRoomState(
 	ctx context.Context, txn *sql.Tx,
-	event gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition,
+	event *gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition,
 ) error {
 	// Parse content as JSON and search for an "url" key
 	containsURL := false
@@ -275,8 +275,8 @@ func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
 	return rowsToStreamEvents(rows)
 }
 
-func rowsToEvents(rows *sql.Rows) ([]gomatrixserverlib.HeaderedEvent, error) {
+func rowsToEvents(rows *sql.Rows) ([]*gomatrixserverlib.HeaderedEvent, error) {
-	result := []gomatrixserverlib.HeaderedEvent{}
+	result := []*gomatrixserverlib.HeaderedEvent{}
 	for rows.Next() {
 		var eventBytes []byte
 		if err := rows.Scan(&eventBytes); err != nil {
@@ -287,7 +287,7 @@ func rowsToEvents(rows *sql.Rows) ([]gomatrixserverlib.HeaderedEvent, error) {
 		if err := json.Unmarshal(eventBytes, &ev); err != nil {
 			return nil, err
 		}
-		result = append(result, ev)
+		result = append(result, &ev)
 	}
 	return result, rows.Err()
 }

syncapi/storage/postgres/invites_table.go

@@ -91,7 +91,7 @@ func NewPostgresInvitesTable(db *sql.DB) (tables.Invites, error) {
 }
 
 func (s *inviteEventsStatements) InsertInviteEvent(
-	ctx context.Context, txn *sql.Tx, inviteEvent gomatrixserverlib.HeaderedEvent,
+	ctx context.Context, txn *sql.Tx, inviteEvent *gomatrixserverlib.HeaderedEvent,
 ) (streamPos types.StreamPosition, err error) {
 	var headeredJSON []byte
 	headeredJSON, err = json.Marshal(inviteEvent)
@@ -121,15 +121,15 @@ func (s *inviteEventsStatements) DeleteInviteEvent(
 // active invites for the target user ID in the supplied range.
 func (s *inviteEventsStatements) SelectInviteEventsInRange(
 	ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range,
-) (map[string]gomatrixserverlib.HeaderedEvent, map[string]gomatrixserverlib.HeaderedEvent, error) {
+) (map[string]*gomatrixserverlib.HeaderedEvent, map[string]*gomatrixserverlib.HeaderedEvent, error) {
 	stmt := sqlutil.TxStmt(txn, s.selectInviteEventsInRangeStmt)
 	rows, err := stmt.QueryContext(ctx, targetUserID, r.Low(), r.High())
 	if err != nil {
 		return nil, nil, err
 	}
 	defer internal.CloseAndLogIfError(ctx, rows, "selectInviteEventsInRange: rows.close() failed")
-	result := map[string]gomatrixserverlib.HeaderedEvent{}
+	result := map[string]*gomatrixserverlib.HeaderedEvent{}
-	retired := map[string]gomatrixserverlib.HeaderedEvent{}
+	retired := map[string]*gomatrixserverlib.HeaderedEvent{}
 	for rows.Next() {
 		var (
 			roomID    string
@@ -148,7 +148,7 @@ func (s *inviteEventsStatements) SelectInviteEventsInRange(
 			continue
 		}
 
-		var event gomatrixserverlib.HeaderedEvent
+		var event *gomatrixserverlib.HeaderedEvent
 		if err := json.Unmarshal(eventJSON, &event); err != nil {
 			return nil, nil, err
 		}

syncapi/storage/postgres/output_room_events_table.go

@@ -247,7 +247,7 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
 		stateNeeded[ev.RoomID()] = needSet
 
 		eventIDToEvent[ev.EventID()] = types.StreamEvent{
-			HeaderedEvent:   ev,
+			HeaderedEvent:   &ev,
 			StreamPosition:  streamPos,
 			ExcludeFromSync: excludeFromSync,
 		}
@@ -437,7 +437,7 @@ func rowsToStreamEvents(rows *sql.Rows) ([]types.StreamEvent, error) {
 		}
 
 		result = append(result, types.StreamEvent{
-			HeaderedEvent:   ev,
+			HeaderedEvent:   &ev,
 			StreamPosition:  streamPos,
 			TransactionID:   transactionID,
 			ExcludeFromSync: excludeFromSync,

syncapi/storage/shared/syncserver.go

@@ -57,7 +57,7 @@ type Database struct {
 // If an event is not found in the database then it will be omitted from the list.
 // Returns an error if there was a problem talking with the database.
 // Does not include any transaction IDs in the returned events.
-func (d *Database) Events(ctx context.Context, eventIDs []string) ([]gomatrixserverlib.HeaderedEvent, error) {
+func (d *Database) Events(ctx context.Context, eventIDs []string) ([]*gomatrixserverlib.HeaderedEvent, error) {
 	streamEvents, err := d.OutputEvents.SelectEvents(ctx, nil, eventIDs)
 	if err != nil {
 		return nil, err
@@ -135,7 +135,7 @@ func (d *Database) GetStateEvent(
 
 func (d *Database) GetStateEventsForRoom(
 	ctx context.Context, roomID string, stateFilter *gomatrixserverlib.StateFilter,
-) (stateEvents []gomatrixserverlib.HeaderedEvent, err error) {
+) (stateEvents []*gomatrixserverlib.HeaderedEvent, err error) {
 	stateEvents, err = d.CurrentRoomState.SelectCurrentState(ctx, nil, roomID, stateFilter)
 	return
 }
@@ -144,7 +144,7 @@ func (d *Database) GetStateEventsForRoom(
 // If the invite was successfully stored this returns the stream ID it was stored at.
 // Returns an error if there was a problem communicating with the database.
 func (d *Database) AddInviteEvent(
-	ctx context.Context, inviteEvent gomatrixserverlib.HeaderedEvent,
+	ctx context.Context, inviteEvent *gomatrixserverlib.HeaderedEvent,
 ) (sp types.StreamPosition, err error) {
 	_ = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
 		sp, err = d.Invites.InsertInviteEvent(ctx, txn, inviteEvent)
@@ -223,8 +223,8 @@ func (d *Database) UpsertAccountData(
 	return
 }
 
-func (d *Database) StreamEventsToEvents(device *userapi.Device, in []types.StreamEvent) []gomatrixserverlib.HeaderedEvent {
+func (d *Database) StreamEventsToEvents(device *userapi.Device, in []types.StreamEvent) []*gomatrixserverlib.HeaderedEvent {
-	out := make([]gomatrixserverlib.HeaderedEvent, len(in))
+	out := make([]*gomatrixserverlib.HeaderedEvent, len(in))
 	for i := 0; i < len(in); i++ {
 		out[i] = in[i].HeaderedEvent
 		if device != nil && in[i].TransactionID != nil {
@@ -295,7 +295,7 @@ func (d *Database) PurgeRoomState(
 func (d *Database) WriteEvent(
 	ctx context.Context,
 	ev *gomatrixserverlib.HeaderedEvent,
-	addStateEvents []gomatrixserverlib.HeaderedEvent,
+	addStateEvents []*gomatrixserverlib.HeaderedEvent,
 	addStateEventIDs, removeStateEventIDs []string,
 	transactionID *api.TransactionID, excludeFromSync bool,
 ) (pduPosition types.StreamPosition, returnErr error) {
@@ -332,7 +332,7 @@ func (d *Database) WriteEvent(
 func (d *Database) updateRoomState(
 	ctx context.Context, txn *sql.Tx,
 	removedEventIDs []string,
-	addedEvents []gomatrixserverlib.HeaderedEvent,
+	addedEvents []*gomatrixserverlib.HeaderedEvent,
 	pduPosition types.StreamPosition,
 ) error {
 	// remove first, then add, as we do not ever delete state, but do replace state which is a remove followed by an add.
@@ -709,14 +709,14 @@ func (d *Database) RedactEvent(ctx context.Context, redactedEventID string, reda
 	}
 	eventToRedact := redactedEvents[0].Unwrap()
 	redactionEvent := redactedBecause.Unwrap()
-	ev, err := eventutil.RedactEvent(&redactionEvent, &eventToRedact)
+	ev, err := eventutil.RedactEvent(redactionEvent, eventToRedact)
 	if err != nil {
 		return err
 	}
 
 	newEvent := ev.Headered(redactedBecause.RoomVersion)
 	err = d.Writer.Do(nil, nil, func(txn *sql.Tx) error {
-		return d.OutputEvents.UpdateEventJSON(ctx, &newEvent)
+		return d.OutputEvents.UpdateEventJSON(ctx, newEvent)
 	})
 	return err
 }
@@ -809,7 +809,7 @@ func (d *Database) getJoinResponseForCompleteSync(
 	stateFilter *gomatrixserverlib.StateFilter,
 	numRecentEventsPerRoom int, device userapi.Device,
 ) (jr *types.JoinResponse, err error) {
-	var stateEvents []gomatrixserverlib.HeaderedEvent
+	var stateEvents []*gomatrixserverlib.HeaderedEvent
 	stateEvents, err = d.CurrentRoomState.SelectCurrentState(ctx, txn, roomID, stateFilter)
 	if err != nil {
 		return
@@ -1180,7 +1180,7 @@ func (d *Database) getStateDeltas(
 			//       dupe join events will result in the entire room state coming down to the client again. This is added in
 			//       the 'state' part of the response though, so is transparent modulo bandwidth concerns as it is not added to
 			//       the timeline.
-			if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
+			if membership := getMembershipFromEvent(ev.Event, userID); membership != "" {
 				if membership == gomatrixserverlib.Join {
 					// send full room state down instead of a delta
 					var s []types.StreamEvent
@@ -1264,7 +1264,7 @@ func (d *Database) getStateDeltasForFullStateSync(
 
 	for roomID, stateStreamEvents := range state {
 		for _, ev := range stateStreamEvents {
-			if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
+			if membership := getMembershipFromEvent(ev.Event, userID); membership != "" {
 				if membership != gomatrixserverlib.Join { // We've already added full state for all joined rooms above.
 					deltas[roomID] = stateDelta{
 						membership:    membership,
@@ -1426,7 +1426,7 @@ func (d *Database) CleanSendToDeviceUpdates(
 // There may be some overlap where events in stateEvents are already in recentEvents, so filter
 // them out so we don't include them twice in the /sync response. They should be in recentEvents
 // only, so clients get to the correct state once they have rolled forward.
-func removeDuplicates(stateEvents, recentEvents []gomatrixserverlib.HeaderedEvent) []gomatrixserverlib.HeaderedEvent {
+func removeDuplicates(stateEvents, recentEvents []*gomatrixserverlib.HeaderedEvent) []*gomatrixserverlib.HeaderedEvent {
 	for _, recentEv := range recentEvents {
 		if recentEv.StateKey() == nil {
 			continue // not a state event
@@ -1463,7 +1463,7 @@ func getMembershipFromEvent(ev *gomatrixserverlib.Event, userID string) string {
 
 type stateDelta struct {
 	roomID      string
-	stateEvents []gomatrixserverlib.HeaderedEvent
+	stateEvents []*gomatrixserverlib.HeaderedEvent
 	membership  string
 	// The PDU stream position of the latest membership event for this user, if applicable.
 	// Can be 0 if there is no membership event in this delta.

syncapi/storage/sqlite3/current_room_state_table.go

@@ -184,7 +184,7 @@ func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(
 func (s *currentRoomStateStatements) SelectCurrentState(
 	ctx context.Context, txn *sql.Tx, roomID string,
 	stateFilterPart *gomatrixserverlib.StateFilter,
-) ([]gomatrixserverlib.HeaderedEvent, error) {
+) ([]*gomatrixserverlib.HeaderedEvent, error) {
 	stmt := sqlutil.TxStmt(txn, s.selectCurrentStateStmt)
 	rows, err := stmt.QueryContext(ctx, roomID,
 		nil, // FIXME: pq.StringArray(stateFilterPart.Senders),
@@ -220,7 +220,7 @@ func (s *currentRoomStateStatements) DeleteRoomStateForRoom(
 
 func (s *currentRoomStateStatements) UpsertRoomState(
 	ctx context.Context, txn *sql.Tx,
-	event gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition,
+	event *gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition,
 ) error {
 	// Parse content as JSON and search for an "url" key
 	containsURL := false
@@ -286,8 +286,8 @@ func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
 	return res, nil
 }
 
-func rowsToEvents(rows *sql.Rows) ([]gomatrixserverlib.HeaderedEvent, error) {
+func rowsToEvents(rows *sql.Rows) ([]*gomatrixserverlib.HeaderedEvent, error) {
-	result := []gomatrixserverlib.HeaderedEvent{}
+	result := []*gomatrixserverlib.HeaderedEvent{}
 	for rows.Next() {
 		var eventBytes []byte
 		if err := rows.Scan(&eventBytes); err != nil {
@@ -298,7 +298,7 @@ func rowsToEvents(rows *sql.Rows) ([]gomatrixserverlib.HeaderedEvent, error) {
 		if err := json.Unmarshal(eventBytes, &ev); err != nil {
 			return nil, err
 		}
-		result = append(result, ev)
+		result = append(result, &ev)
 	}
 	return result, nil
 }

syncapi/storage/sqlite3/invites_table.go

@@ -91,7 +91,7 @@ func NewSqliteInvitesTable(db *sql.DB, streamID *streamIDStatements) (tables.Inv
 }
 
 func (s *inviteEventsStatements) InsertInviteEvent(
-	ctx context.Context, txn *sql.Tx, inviteEvent gomatrixserverlib.HeaderedEvent,
+	ctx context.Context, txn *sql.Tx, inviteEvent *gomatrixserverlib.HeaderedEvent,
 ) (streamPos types.StreamPosition, err error) {
 	streamPos, err = s.streamIDStatements.nextStreamID(ctx, txn)
 	if err != nil {
@@ -132,15 +132,15 @@ func (s *inviteEventsStatements) DeleteInviteEvent(
 // active invites for the target user ID in the supplied range.
 func (s *inviteEventsStatements) SelectInviteEventsInRange(
 	ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range,
-) (map[string]gomatrixserverlib.HeaderedEvent, map[string]gomatrixserverlib.HeaderedEvent, error) {
+) (map[string]*gomatrixserverlib.HeaderedEvent, map[string]*gomatrixserverlib.HeaderedEvent, error) {
 	stmt := sqlutil.TxStmt(txn, s.selectInviteEventsInRangeStmt)
 	rows, err := stmt.QueryContext(ctx, targetUserID, r.Low(), r.High())
 	if err != nil {
 		return nil, nil, err
 	}
 	defer internal.CloseAndLogIfError(ctx, rows, "selectInviteEventsInRange: rows.close() failed")
-	result := map[string]gomatrixserverlib.HeaderedEvent{}
+	result := map[string]*gomatrixserverlib.HeaderedEvent{}
-	retired := map[string]gomatrixserverlib.HeaderedEvent{}
+	retired := map[string]*gomatrixserverlib.HeaderedEvent{}
 	for rows.Next() {
 		var (
 			roomID    string
@@ -159,7 +159,7 @@ func (s *inviteEventsStatements) SelectInviteEventsInRange(
 			continue
 		}
 
-		var event gomatrixserverlib.HeaderedEvent
+		var event *gomatrixserverlib.HeaderedEvent
 		if err := json.Unmarshal(eventJSON, &event); err != nil {
 			return nil, nil, err
 		}

syncapi/storage/sqlite3/output_room_events_table.go

@@ -246,7 +246,7 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
 		stateNeeded[ev.RoomID()] = needSet
 
 		eventIDToEvent[ev.EventID()] = types.StreamEvent{
-			HeaderedEvent:   ev,
+			HeaderedEvent:   &ev,
 			StreamPosition:  streamPos,
 			ExcludeFromSync: excludeFromSync,
 		}
@@ -452,7 +452,7 @@ func rowsToStreamEvents(rows *sql.Rows) ([]types.StreamEvent, error) {
 		}
 
 		result = append(result, types.StreamEvent{
-			HeaderedEvent:   ev,
+			HeaderedEvent:   &ev,
 			StreamPosition:  streamPos,
 			TransactionID:   transactionID,
 			ExcludeFromSync: excludeFromSync,

syncapi/storage/storage_test.go

@@ -37,7 +37,7 @@ var (
 	})
 )
 
-func MustCreateEvent(t *testing.T, roomID string, prevs []gomatrixserverlib.HeaderedEvent, b *gomatrixserverlib.EventBuilder) gomatrixserverlib.HeaderedEvent {
+func MustCreateEvent(t *testing.T, roomID string, prevs []*gomatrixserverlib.HeaderedEvent, b *gomatrixserverlib.EventBuilder) *gomatrixserverlib.HeaderedEvent {
 	b.RoomID = roomID
 	if prevs != nil {
 		prevIDs := make([]string, len(prevs))
@@ -70,8 +70,8 @@ func MustCreateDatabase(t *testing.T) storage.Database {
 }
 
 // Create a list of events which include a create event, join event and some messages.
-func SimpleRoom(t *testing.T, roomID, userA, userB string) (msgs []gomatrixserverlib.HeaderedEvent, state []gomatrixserverlib.HeaderedEvent) {
+func SimpleRoom(t *testing.T, roomID, userA, userB string) (msgs []*gomatrixserverlib.HeaderedEvent, state []*gomatrixserverlib.HeaderedEvent) {
-	var events []gomatrixserverlib.HeaderedEvent
+	var events []*gomatrixserverlib.HeaderedEvent
 	events = append(events, MustCreateEvent(t, roomID, nil, &gomatrixserverlib.EventBuilder{
 		Content:  []byte(fmt.Sprintf(`{"room_version":"4","creator":"%s"}`, userA)),
 		Type:     "m.room.create",
@@ -80,7 +80,7 @@ func SimpleRoom(t *testing.T, roomID, userA, userB string) (msgs []gomatrixserve
 		Depth:    int64(len(events) + 1),
 	}))
 	state = append(state, events[len(events)-1])
-	events = append(events, MustCreateEvent(t, roomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+	events = append(events, MustCreateEvent(t, roomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 		Content:  []byte(`{"membership":"join"}`),
 		Type:     "m.room.member",
 		StateKey: &userA,
@@ -89,14 +89,14 @@ func SimpleRoom(t *testing.T, roomID, userA, userB string) (msgs []gomatrixserve
 	}))
 	state = append(state, events[len(events)-1])
 	for i := 0; i < 10; i++ {
-		events = append(events, MustCreateEvent(t, roomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+		events = append(events, MustCreateEvent(t, roomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 			Content: []byte(fmt.Sprintf(`{"body":"Message A %d"}`, i+1)),
 			Type:    "m.room.message",
 			Sender:  userA,
 			Depth:   int64(len(events) + 1),
 		}))
 	}
-	events = append(events, MustCreateEvent(t, roomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+	events = append(events, MustCreateEvent(t, roomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 		Content:  []byte(`{"membership":"join"}`),
 		Type:     "m.room.member",
 		StateKey: &userB,
@@ -105,7 +105,7 @@ func SimpleRoom(t *testing.T, roomID, userA, userB string) (msgs []gomatrixserve
 	}))
 	state = append(state, events[len(events)-1])
 	for i := 0; i < 10; i++ {
-		events = append(events, MustCreateEvent(t, roomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+		events = append(events, MustCreateEvent(t, roomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 			Content: []byte(fmt.Sprintf(`{"body":"Message B %d"}`, i+1)),
 			Type:    "m.room.message",
 			Sender:  userB,
@@ -116,16 +116,16 @@ func SimpleRoom(t *testing.T, roomID, userA, userB string) (msgs []gomatrixserve
 	return events, state
 }
 
-func MustWriteEvents(t *testing.T, db storage.Database, events []gomatrixserverlib.HeaderedEvent) (positions []types.StreamPosition) {
+func MustWriteEvents(t *testing.T, db storage.Database, events []*gomatrixserverlib.HeaderedEvent) (positions []types.StreamPosition) {
 	for _, ev := range events {
-		var addStateEvents []gomatrixserverlib.HeaderedEvent
+		var addStateEvents []*gomatrixserverlib.HeaderedEvent
 		var addStateEventIDs []string
 		var removeStateEventIDs []string
 		if ev.StateKey() != nil {
 			addStateEvents = append(addStateEvents, ev)
 			addStateEventIDs = append(addStateEventIDs, ev.EventID())
 		}
-		pos, err := db.WriteEvent(ctx, &ev, addStateEvents, addStateEventIDs, removeStateEventIDs, nil, false)
+		pos, err := db.WriteEvent(ctx, ev, addStateEvents, addStateEventIDs, removeStateEventIDs, nil, false)
 		if err != nil {
 			t.Fatalf("WriteEvent failed: %s", err)
 		}
@@ -156,8 +156,8 @@ func TestSyncResponse(t *testing.T) {
 	testCases := []struct {
 		Name         string
 		DoSync       func() (*types.Response, error)
-		WantTimeline []gomatrixserverlib.HeaderedEvent
+		WantTimeline []*gomatrixserverlib.HeaderedEvent
-		WantState    []gomatrixserverlib.HeaderedEvent
+		WantState    []*gomatrixserverlib.HeaderedEvent
 	}{
 		// The purpose of this test is to make sure that incremental syncs are including up to the latest events.
 		// It's a basic sanity test that sync works. It creates a `since` token that is on the penultimate event.
@@ -339,7 +339,7 @@ func TestGetEventsInRangeWithEventsSameDepth(t *testing.T) {
 	t.Parallel()
 	db := MustCreateDatabase(t)
 
-	var events []gomatrixserverlib.HeaderedEvent
+	var events []*gomatrixserverlib.HeaderedEvent
 	events = append(events, MustCreateEvent(t, testRoomID, nil, &gomatrixserverlib.EventBuilder{
 		Content:  []byte(fmt.Sprintf(`{"room_version":"4","creator":"%s"}`, testUserIDA)),
 		Type:     "m.room.create",
@@ -347,7 +347,7 @@ func TestGetEventsInRangeWithEventsSameDepth(t *testing.T) {
 		Sender:   testUserIDA,
 		Depth:    int64(len(events) + 1),
 	}))
-	events = append(events, MustCreateEvent(t, testRoomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+	events = append(events, MustCreateEvent(t, testRoomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 		Content:  []byte(`{"membership":"join"}`),
 		Type:     "m.room.member",
 		StateKey: &testUserIDA,
@@ -355,7 +355,7 @@ func TestGetEventsInRangeWithEventsSameDepth(t *testing.T) {
 		Depth:    int64(len(events) + 1),
 	}))
 	// fork the dag into three, same prev_events and depth
-	parent := []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}
+	parent := []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}
 	depth := int64(len(events) + 1)
 	for i := 0; i < 3; i++ {
 		events = append(events, MustCreateEvent(t, testRoomID, parent, &gomatrixserverlib.EventBuilder{
@@ -388,7 +388,7 @@ func TestGetEventsInRangeWithEventsSameDepth(t *testing.T) {
 		Name  string
 		From  types.TopologyToken
 		Limit int
-		Wants []gomatrixserverlib.HeaderedEvent
+		Wants []*gomatrixserverlib.HeaderedEvent
 	}{
 		{
 			Name:  "Pagination over the whole fork",
@@ -429,7 +429,7 @@ func TestGetEventsInTopologicalRangeMultiRoom(t *testing.T) {
 	t.Parallel()
 	db := MustCreateDatabase(t)
 
-	makeEvents := func(roomID string) (events []gomatrixserverlib.HeaderedEvent) {
+	makeEvents := func(roomID string) (events []*gomatrixserverlib.HeaderedEvent) {
 		events = append(events, MustCreateEvent(t, roomID, nil, &gomatrixserverlib.EventBuilder{
 			Content:  []byte(fmt.Sprintf(`{"room_version":"4","creator":"%s"}`, testUserIDA)),
 			Type:     "m.room.create",
@@ -437,7 +437,7 @@ func TestGetEventsInTopologicalRangeMultiRoom(t *testing.T) {
 			Sender:   testUserIDA,
 			Depth:    int64(len(events) + 1),
 		}))
-		events = append(events, MustCreateEvent(t, roomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+		events = append(events, MustCreateEvent(t, roomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 			Content:  []byte(`{"membership":"join"}`),
 			Type:     "m.room.member",
 			StateKey: &testUserIDA,
@@ -483,14 +483,14 @@ func TestGetEventsInRangeWithEventsInsertedLikeBackfill(t *testing.T) {
 
 	// "federation" join
 	userC := fmt.Sprintf("@radiance:%s", testOrigin)
-	joinEvent := MustCreateEvent(t, testRoomID, []gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
+	joinEvent := MustCreateEvent(t, testRoomID, []*gomatrixserverlib.HeaderedEvent{events[len(events)-1]}, &gomatrixserverlib.EventBuilder{
 		Content:  []byte(`{"membership":"join"}`),
 		Type:     "m.room.member",
 		StateKey: &userC,
 		Sender:   userC,
 		Depth:    int64(len(events) + 1),
 	})
-	MustWriteEvents(t, db, []gomatrixserverlib.HeaderedEvent{joinEvent})
+	MustWriteEvents(t, db, []*gomatrixserverlib.HeaderedEvent{joinEvent})
 
 	// Sync will return this for the prev_batch
 	from := topologyTokenBefore(t, db, joinEvent.EventID())
@@ -627,7 +627,7 @@ func TestInviteBehaviour(t *testing.T) {
 		StateKey: &testUserIDA,
 		Sender:   "@inviteUser2:somewhere",
 	})
-	for _, ev := range []gomatrixserverlib.HeaderedEvent{inviteEvent1, inviteEvent2} {
+	for _, ev := range []*gomatrixserverlib.HeaderedEvent{inviteEvent1, inviteEvent2} {
 		_, err := db.AddInviteEvent(ctx, ev)
 		if err != nil {
 			t.Fatalf("Failed to AddInviteEvent: %s", err)
@@ -688,7 +688,7 @@ func assertInvitedToRooms(t *testing.T, res *types.Response, roomIDs []string) {
 	}
 }
 
-func assertEventsEqual(t *testing.T, msg string, checkRoomID bool, gots []gomatrixserverlib.ClientEvent, wants []gomatrixserverlib.HeaderedEvent) {
+func assertEventsEqual(t *testing.T, msg string, checkRoomID bool, gots []gomatrixserverlib.ClientEvent, wants []*gomatrixserverlib.HeaderedEvent) {
 	t.Helper()
 	if len(gots) != len(wants) {
 		t.Fatalf("%s response returned %d events, want %d", msg, len(gots), len(wants))
@@ -738,8 +738,8 @@ func topologyTokenBefore(t *testing.T, db storage.Database, eventID string) *typ
 	return &tok
 }
 
-func reversed(in []gomatrixserverlib.HeaderedEvent) []gomatrixserverlib.HeaderedEvent {
+func reversed(in []*gomatrixserverlib.HeaderedEvent) []*gomatrixserverlib.HeaderedEvent {
-	out := make([]gomatrixserverlib.HeaderedEvent, len(in))
+	out := make([]*gomatrixserverlib.HeaderedEvent, len(in))
 	for i := 0; i < len(in); i++ {
 		out[i] = in[len(in)-i-1]
 	}

syncapi/storage/tables/interface.go

@@ -32,11 +32,11 @@ type AccountData interface {
 }
 
 type Invites interface {
-	InsertInviteEvent(ctx context.Context, txn *sql.Tx, inviteEvent gomatrixserverlib.HeaderedEvent) (streamPos types.StreamPosition, err error)
+	InsertInviteEvent(ctx context.Context, txn *sql.Tx, inviteEvent *gomatrixserverlib.HeaderedEvent) (streamPos types.StreamPosition, err error)
 	DeleteInviteEvent(ctx context.Context, txn *sql.Tx, inviteEventID string) (types.StreamPosition, error)
 	// SelectInviteEventsInRange returns a map of room ID to invite events. If multiple invite/retired invites exist in the given range, return the latest value
 	// for the room.
-	SelectInviteEventsInRange(ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range) (invites map[string]gomatrixserverlib.HeaderedEvent, retired map[string]gomatrixserverlib.HeaderedEvent, err error)
+	SelectInviteEventsInRange(ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range) (invites map[string]*gomatrixserverlib.HeaderedEvent, retired map[string]*gomatrixserverlib.HeaderedEvent, err error)
 	SelectMaxInviteID(ctx context.Context, txn *sql.Tx) (id int64, err error)
 }
 
@@ -87,11 +87,11 @@ type Topology interface {
 type CurrentRoomState interface {
 	SelectStateEvent(ctx context.Context, roomID, evType, stateKey string) (*gomatrixserverlib.HeaderedEvent, error)
 	SelectEventsWithEventIDs(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]types.StreamEvent, error)
-	UpsertRoomState(ctx context.Context, txn *sql.Tx, event gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition) error
+	UpsertRoomState(ctx context.Context, txn *sql.Tx, event *gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition) error
 	DeleteRoomStateByEventID(ctx context.Context, txn *sql.Tx, eventID string) error
 	DeleteRoomStateForRoom(ctx context.Context, txn *sql.Tx, roomID string) error
 	// SelectCurrentState returns all the current state events for the given room.
-	SelectCurrentState(ctx context.Context, txn *sql.Tx, roomID string, stateFilter *gomatrixserverlib.StateFilter) ([]gomatrixserverlib.HeaderedEvent, error)
+	SelectCurrentState(ctx context.Context, txn *sql.Tx, roomID string, stateFilter *gomatrixserverlib.StateFilter) ([]*gomatrixserverlib.HeaderedEvent, error)
 	// SelectRoomIDsWithMembership returns the list of room IDs which have the given user in the given membership state.
 	SelectRoomIDsWithMembership(ctx context.Context, txn *sql.Tx, userID string, membership string) ([]string, error)
 	// SelectJoinedUsers returns a map of room ID to a list of joined user IDs.

syncapi/types/types.go

@@ -59,7 +59,7 @@ func (p *LogPosition) IsAfter(lp *LogPosition) bool {
 
 // StreamEvent is the same as gomatrixserverlib.Event but also has the PDU stream position for this event.
 type StreamEvent struct {
-	gomatrixserverlib.HeaderedEvent
+	*gomatrixserverlib.HeaderedEvent
 	StreamPosition  StreamPosition
 	TransactionID   *api.TransactionID
 	ExcludeFromSync bool
@@ -471,7 +471,7 @@ type InviteResponse struct {
 }
 
 // NewInviteResponse creates an empty response with initialised arrays.
-func NewInviteResponse(event gomatrixserverlib.HeaderedEvent) *InviteResponse {
+func NewInviteResponse(event *gomatrixserverlib.HeaderedEvent) *InviteResponse {
 	res := InviteResponse{}
 	res.InviteState.Events = []json.RawMessage{}