Basic sync filtering (#1721)

* Add some filtering (postgres only for now)

* Fix build error

* Try to use request filter

* Use default filter as a template when retrieving from the database

* Remove unused strut

* Update sytest-whitelist

* Add filtering to SelectEarlyEvents

* Fix Postgres selectEarlyEvents query

* Attempt filtering on SQLite

* Test limit, set field for limit/order in prepareWithFilters

* Remove debug logging, add comments

* Tweaks, debug logging

* Separate SQLite stream IDs

* Fix filtering in current state table

* Fix lock issues

* More tweaks

* Current state requires room ID

* Review comments

19 files changed, 278 insertions, 159 deletions

diff --git a/syncapi/notifier/notifier_test.go b/syncapi/notifier/notifier_test.go
index 8b9425e3..1401fc67 100644
--- a/syncapi/notifier/notifier_test.go
+++ b/syncapi/notifier/notifier_test.go
@@ -367,7 +367,6 @@ func newTestSyncRequest(userID, deviceID string, since types.StreamingToken) typ
 		Timeout:       1 * time.Minute,
 		Since:         since,
 		WantFullState: false,
-		Limit:         20,
 		Log:           util.GetLogger(context.TODO()),
 		Context:       context.TODO(),
 	}
diff --git a/syncapi/routing/messages.go b/syncapi/routing/messages.go
index e294c880..ba739148 100644
--- a/syncapi/routing/messages.go
+++ b/syncapi/routing/messages.go
@@ -235,12 +235,15 @@ func (r *messagesReq) retrieveEvents() (
 	clientEvents []gomatrixserverlib.ClientEvent, start,
 	end types.TopologyToken, err error,
 ) {
+	eventFilter := gomatrixserverlib.DefaultRoomEventFilter()
+	eventFilter.Limit = r.limit
+
 	// Retrieve the events from the local database.
 	var streamEvents []types.StreamEvent
 	if r.fromStream != nil {
 		toStream := r.to.StreamToken()
 		streamEvents, err = r.db.GetEventsInStreamingRange(
-			r.ctx, r.fromStream, &toStream, r.roomID, r.limit, r.backwardOrdering,
+			r.ctx, r.fromStream, &toStream, r.roomID, &eventFilter, r.backwardOrdering,
 		)
 	} else {
 		streamEvents, err = r.db.GetEventsInTopologicalRange(
diff --git a/syncapi/storage/interface.go b/syncapi/storage/interface.go
index a51ab4e0..22d80161 100644
--- a/syncapi/storage/interface.go
+++ b/syncapi/storage/interface.go
@@ -40,7 +40,7 @@ type Database interface {
 	GetStateDeltas(ctx context.Context, device *userapi.Device, r types.Range, userID string, stateFilter *gomatrixserverlib.StateFilter) ([]types.StateDelta, []string, error)
 	RoomIDsWithMembership(ctx context.Context, userID string, membership string) ([]string, error)
 
-	RecentEvents(ctx context.Context, roomID string, r types.Range, limit int, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, bool, error)
+	RecentEvents(ctx context.Context, roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, bool, error)
 
 	GetBackwardTopologyPos(ctx context.Context, events []types.StreamEvent) (types.TopologyToken, error)
 	PositionInTopology(ctx context.Context, eventID string) (pos types.StreamPosition, spos types.StreamPosition, err error)
@@ -105,7 +105,7 @@ type Database interface {
 	// Returns an error if there was a problem communicating with the database.
 	DeletePeeks(ctx context.Context, RoomID, UserID string) (types.StreamPosition, error)
 	// GetEventsInStreamingRange retrieves all of the events on a given ordering using the given extremities and limit.
-	GetEventsInStreamingRange(ctx context.Context, from, to *types.StreamingToken, roomID string, limit int, backwardOrdering bool) (events []types.StreamEvent, err error)
+	GetEventsInStreamingRange(ctx context.Context, from, to *types.StreamingToken, roomID string, eventFilter *gomatrixserverlib.RoomEventFilter, backwardOrdering bool) (events []types.StreamEvent, err error)
 	// GetEventsInTopologicalRange retrieves all of the events on a given ordering using the given extremities and limit.
 	GetEventsInTopologicalRange(ctx context.Context, from, to *types.TopologyToken, roomID string, limit int, backwardOrdering bool) (events []types.StreamEvent, err error)
 	// EventPositionInTopology returns the depth and stream position of the given event.
diff --git a/syncapi/storage/postgres/filter_table.go b/syncapi/storage/postgres/filter_table.go
index beeb864b..dfd3d696 100644
--- a/syncapi/storage/postgres/filter_table.go
+++ b/syncapi/storage/postgres/filter_table.go
@@ -83,7 +83,7 @@ func (s *filterStatements) SelectFilter(
 	}
 
 	// Unmarshal JSON into Filter struct
-	var filter gomatrixserverlib.Filter
+	filter := gomatrixserverlib.DefaultFilter()
 	if err = json.Unmarshal(filterData, &filter); err != nil {
 		return nil, err
 	}
diff --git a/syncapi/storage/postgres/output_room_events_table.go b/syncapi/storage/postgres/output_room_events_table.go
index f4bbebd2..28668de0 100644
--- a/syncapi/storage/postgres/output_room_events_table.go
+++ b/syncapi/storage/postgres/output_room_events_table.go
@@ -84,17 +84,29 @@ const selectEventsSQL = "" +
 const selectRecentEventsSQL = "" +
 	"SELECT event_id, id, headered_event_json, session_id, exclude_from_sync, transaction_id FROM syncapi_output_room_events" +
 	" WHERE room_id = $1 AND id > $2 AND id <= $3" +
-	" ORDER BY id DESC LIMIT $4"
+	" AND ( $4::text[] IS NULL OR     sender  = ANY($4)  )" +
+	" AND ( $5::text[] IS NULL OR NOT(sender  = ANY($5)) )" +
+	" AND ( $6::text[] IS NULL OR     type LIKE ANY($6)  )" +
+	" AND ( $7::text[] IS NULL OR NOT(type LIKE ANY($7)) )" +
+	" ORDER BY id DESC LIMIT $8"
 
 const selectRecentEventsForSyncSQL = "" +
 	"SELECT event_id, id, headered_event_json, session_id, exclude_from_sync, transaction_id FROM syncapi_output_room_events" +
 	" WHERE room_id = $1 AND id > $2 AND id <= $3 AND exclude_from_sync = FALSE" +
-	" ORDER BY id DESC LIMIT $4"
+	" AND ( $4::text[] IS NULL OR     sender  = ANY($4)  )" +
+	" AND ( $5::text[] IS NULL OR NOT(sender  = ANY($5)) )" +
+	" AND ( $6::text[] IS NULL OR     type LIKE ANY($6)  )" +
+	" AND ( $7::text[] IS NULL OR NOT(type LIKE ANY($7)) )" +
+	" ORDER BY id DESC LIMIT $8"
 
 const selectEarlyEventsSQL = "" +
 	"SELECT event_id, id, headered_event_json, session_id, exclude_from_sync, transaction_id FROM syncapi_output_room_events" +
 	" WHERE room_id = $1 AND id > $2 AND id <= $3" +
-	" ORDER BY id ASC LIMIT $4"
+	" AND ( $4::text[] IS NULL OR     sender  = ANY($4)  )" +
+	" AND ( $5::text[] IS NULL OR NOT(sender  = ANY($5)) )" +
+	" AND ( $6::text[] IS NULL OR     type LIKE ANY($6)  )" +
+	" AND ( $7::text[] IS NULL OR NOT(type LIKE ANY($7)) )" +
+	" ORDER BY id ASC LIMIT $8"
 
 const selectMaxEventIDSQL = "" +
 	"SELECT MAX(id) FROM syncapi_output_room_events"
@@ -322,7 +334,7 @@ func (s *outputRoomEventsStatements) InsertEvent(
 // from sync.
 func (s *outputRoomEventsStatements) SelectRecentEvents(
 	ctx context.Context, txn *sql.Tx,
-	roomID string, r types.Range, limit int,
+	roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter,
 	chronologicalOrder bool, onlySyncEvents bool,
 ) ([]types.StreamEvent, bool, error) {
 	var stmt *sql.Stmt
@@ -331,7 +343,14 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
 	} else {
 		stmt = sqlutil.TxStmt(txn, s.selectRecentEventsStmt)
 	}
-	rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit+1)
+	rows, err := stmt.QueryContext(
+		ctx, roomID, r.Low(), r.High(),
+		pq.StringArray(eventFilter.Senders),
+		pq.StringArray(eventFilter.NotSenders),
+		pq.StringArray(filterConvertTypeWildcardToSQL(eventFilter.Types)),
+		pq.StringArray(filterConvertTypeWildcardToSQL(eventFilter.NotTypes)),
+		eventFilter.Limit+1,
+	)
 	if err != nil {
 		return nil, false, err
 	}
@@ -350,7 +369,7 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
 	}
 	// we queried for 1 more than the limit, so if we returned one more mark limited=true
 	limited := false
-	if len(events) > limit {
+	if len(events) > eventFilter.Limit {
 		limited = true
 		// re-slice the extra (oldest) event out: in chronological order this is the first entry, else the last.
 		if chronologicalOrder {
@@ -367,10 +386,17 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
 // from a given position, up to a maximum of 'limit'.
 func (s *outputRoomEventsStatements) SelectEarlyEvents(
 	ctx context.Context, txn *sql.Tx,
-	roomID string, r types.Range, limit int,
+	roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter,
 ) ([]types.StreamEvent, error) {
 	stmt := sqlutil.TxStmt(txn, s.selectEarlyEventsStmt)
-	rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit)
+	rows, err := stmt.QueryContext(
+		ctx, roomID, r.Low(), r.High(),
+		pq.StringArray(eventFilter.Senders),
+		pq.StringArray(eventFilter.NotSenders),
+		pq.StringArray(filterConvertTypeWildcardToSQL(eventFilter.Types)),
+		pq.StringArray(filterConvertTypeWildcardToSQL(eventFilter.NotTypes)),
+		eventFilter.Limit,
+	)
 	if err != nil {
 		return nil, err
 	}
diff --git a/syncapi/storage/shared/syncserver.go b/syncapi/storage/shared/syncserver.go
index 5b06aabc..9df07693 100644
--- a/syncapi/storage/shared/syncserver.go
+++ b/syncapi/storage/shared/syncserver.go
@@ -110,8 +110,8 @@ func (d *Database) RoomIDsWithMembership(ctx context.Context, userID string, mem
 	return d.CurrentRoomState.SelectRoomIDsWithMembership(ctx, nil, userID, membership)
 }
 
-func (d *Database) RecentEvents(ctx context.Context, roomID string, r types.Range, limit int, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, bool, error) {
-	return d.OutputEvents.SelectRecentEvents(ctx, nil, roomID, r, limit, chronologicalOrder, onlySyncEvents)
+func (d *Database) RecentEvents(ctx context.Context, roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, bool, error) {
+	return d.OutputEvents.SelectRecentEvents(ctx, nil, roomID, r, eventFilter, chronologicalOrder, onlySyncEvents)
 }
 
 func (d *Database) PositionInTopology(ctx context.Context, eventID string) (pos types.StreamPosition, spos types.StreamPosition, err error) {
@@ -151,7 +151,7 @@ func (d *Database) Events(ctx context.Context, eventIDs []string) ([]*gomatrixse
 func (d *Database) GetEventsInStreamingRange(
 	ctx context.Context,
 	from, to *types.StreamingToken,
-	roomID string, limit int,
+	roomID string, eventFilter *gomatrixserverlib.RoomEventFilter,
 	backwardOrdering bool,
 ) (events []types.StreamEvent, err error) {
 	r := types.Range{
@@ -162,14 +162,14 @@ func (d *Database) GetEventsInStreamingRange(
 	if backwardOrdering {
 		// When using backward ordering, we want the most recent events first.
 		if events, _, err = d.OutputEvents.SelectRecentEvents(
-			ctx, nil, roomID, r, limit, false, false,
+			ctx, nil, roomID, r, eventFilter, false, false,
 		); err != nil {
 			return
 		}
 	} else {
 		// When using forward ordering, we want the least recent events first.
 		if events, err = d.OutputEvents.SelectEarlyEvents(
-			ctx, nil, roomID, r, limit,
+			ctx, nil, roomID, r, eventFilter,
 		); err != nil {
 			return
 		}
diff --git a/syncapi/storage/sqlite3/account_data_table.go b/syncapi/storage/sqlite3/account_data_table.go
index 4bcc06ed..1c65cb6a 100644
--- a/syncapi/storage/sqlite3/account_data_table.go
+++ b/syncapi/storage/sqlite3/account_data_table.go
@@ -82,7 +82,7 @@ func (s *accountDataStatements) InsertAccountData(
 	ctx context.Context, txn *sql.Tx,
 	userID, roomID, dataType string,
 ) (pos types.StreamPosition, err error) {
-	pos, err = s.streamIDStatements.nextStreamID(ctx, txn)
+	pos, err = s.streamIDStatements.nextAccountDataID(ctx, txn)
 	if err != nil {
 		return
 	}
diff --git a/syncapi/storage/sqlite3/current_room_state_table.go b/syncapi/storage/sqlite3/current_room_state_table.go
index ac659057..55ed27a4 100644
--- a/syncapi/storage/sqlite3/current_room_state_table.go
+++ b/syncapi/storage/sqlite3/current_room_state_table.go
@@ -19,6 +19,7 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
+	"fmt"
 	"strings"
 
 	"github.com/matrix-org/dendrite/internal"
@@ -66,13 +67,8 @@ const selectRoomIDsWithMembershipSQL = "" +
 	"SELECT DISTINCT room_id FROM syncapi_current_room_state WHERE type = 'm.room.member' AND state_key = $1 AND membership = $2"
 
 const selectCurrentStateSQL = "" +
-	"SELECT event_id, headered_event_json FROM syncapi_current_room_state WHERE room_id = $1" +
-	" AND ( $2 IS NULL OR     sender IN ($2)  )" +
-	" AND ( $3 IS NULL OR NOT(sender IN ($3)) )" +
-	" AND ( $4 IS NULL OR     type   IN ($4)  )" +
-	" AND ( $5 IS NULL OR NOT(type   IN ($5)) )" +
-	" AND ( $6 IS NULL OR     contains_url = $6  )" +
-	" LIMIT $7"
+	"SELECT event_id, headered_event_json FROM syncapi_current_room_state WHERE room_id = $1"
+	// WHEN, ORDER BY and LIMIT will be added by prepareWithFilter
 
 const selectJoinedUsersSQL = "" +
 	"SELECT room_id, state_key FROM syncapi_current_room_state WHERE type = 'm.room.member' AND membership = 'join'"
@@ -95,7 +91,6 @@ type currentRoomStateStatements struct {
 	deleteRoomStateByEventIDStmt    *sql.Stmt
 	DeleteRoomStateForRoomStmt      *sql.Stmt
 	selectRoomIDsWithMembershipStmt *sql.Stmt
-	selectCurrentStateStmt          *sql.Stmt
 	selectJoinedUsersStmt           *sql.Stmt
 	selectStateEventStmt            *sql.Stmt
 }
@@ -121,9 +116,6 @@ func NewSqliteCurrentRoomStateTable(db *sql.DB, streamID *streamIDStatements) (t
 	if s.selectRoomIDsWithMembershipStmt, err = db.Prepare(selectRoomIDsWithMembershipSQL); err != nil {
 		return nil, err
 	}
-	if s.selectCurrentStateStmt, err = db.Prepare(selectCurrentStateSQL); err != nil {
-		return nil, err
-	}
 	if s.selectJoinedUsersStmt, err = db.Prepare(selectJoinedUsersSQL); err != nil {
 		return nil, err
 	}
@@ -185,18 +177,23 @@ func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(
 // CurrentState returns all the current state events for the given room.
 func (s *currentRoomStateStatements) SelectCurrentState(
 	ctx context.Context, txn *sql.Tx, roomID string,
-	stateFilterPart *gomatrixserverlib.StateFilter,
+	stateFilter *gomatrixserverlib.StateFilter,
 ) ([]*gomatrixserverlib.HeaderedEvent, error) {
-	stmt := sqlutil.TxStmt(txn, s.selectCurrentStateStmt)
-	rows, err := stmt.QueryContext(ctx, roomID,
-		nil, // FIXME: pq.StringArray(stateFilterPart.Senders),
-		nil, // FIXME: pq.StringArray(stateFilterPart.NotSenders),
-		nil, // FIXME: pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.Types)),
-		nil, // FIXME: pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.NotTypes)),
-		stateFilterPart.ContainsURL,
-		stateFilterPart.Limit,
+	stmt, params, err := prepareWithFilters(
+		s.db, txn, selectCurrentStateSQL,
+		[]interface{}{
+			roomID,
+		},
+		stateFilter.Senders, stateFilter.NotSenders,
+		stateFilter.Types, stateFilter.NotTypes,
+		stateFilter.Limit, FilterOrderNone,
 	)
 	if err != nil {
+		return nil, fmt.Errorf("s.prepareWithFilters: %w", err)
+	}
+
+	rows, err := stmt.QueryContext(ctx, params...)
+	if err != nil {
 		return nil, err
 	}
 	defer internal.CloseAndLogIfError(ctx, rows, "selectCurrentState: rows.close() failed")
diff --git a/syncapi/storage/sqlite3/filter_table.go b/syncapi/storage/sqlite3/filter_table.go
index 3092bcd7..0cfebef2 100644
--- a/syncapi/storage/sqlite3/filter_table.go
+++ b/syncapi/storage/sqlite3/filter_table.go
@@ -87,7 +87,7 @@ func (s *filterStatements) SelectFilter(
 	}
 
 	// Unmarshal JSON into Filter struct
-	var filter gomatrixserverlib.Filter
+	filter := gomatrixserverlib.DefaultFilter()
 	if err = json.Unmarshal(filterData, &filter); err != nil {
 		return nil, err
 	}
diff --git a/syncapi/storage/sqlite3/filtering.go b/syncapi/storage/sqlite3/filtering.go
new file mode 100644
index 00000000..0faf5297
--- /dev/null
+++ b/syncapi/storage/sqlite3/filtering.go
@@ -0,0 +1,76 @@
+package sqlite3
+
+import (
+	"database/sql"
+	"fmt"
+
+	"github.com/matrix-org/dendrite/internal/sqlutil"
+)
+
+type FilterOrder int
+
+const (
+	FilterOrderNone = iota
+	FilterOrderAsc
+	FilterOrderDesc
+)
+
+// prepareWithFilters returns a prepared statement with the
+// relevant filters included. It also includes an []interface{}
+// list of all the relevant parameters to pass straight to
+// QueryContext, QueryRowContext etc.
+// We don't take the filter object directly here because the
+// fields might come from either a StateFilter or an EventFilter,
+// and it's easier just to have the caller extract the relevant
+// parts.
+func prepareWithFilters(
+	db *sql.DB, txn *sql.Tx, query string, params []interface{},
+	senders, notsenders, types, nottypes []string,
+	limit int, order FilterOrder,
+) (*sql.Stmt, []interface{}, error) {
+	offset := len(params)
+	if count := len(senders); count > 0 {
+		query += " AND sender IN " + sqlutil.QueryVariadicOffset(count, offset)
+		for _, v := range senders {
+			params, offset = append(params, v), offset+1
+		}
+	}
+	if count := len(notsenders); count > 0 {
+		query += " AND sender NOT IN " + sqlutil.QueryVariadicOffset(count, offset)
+		for _, v := range notsenders {
+			params, offset = append(params, v), offset+1
+		}
+	}
+	if count := len(types); count > 0 {
+		query += " AND type IN " + sqlutil.QueryVariadicOffset(count, offset)
+		for _, v := range types {
+			params, offset = append(params, v), offset+1
+		}
+	}
+	if count := len(nottypes); count > 0 {
+		query += " AND type NOT IN " + sqlutil.QueryVariadicOffset(count, offset)
+		for _, v := range nottypes {
+			params, offset = append(params, v), offset+1
+		}
+	}
+	switch order {
+	case FilterOrderAsc:
+		query += " ORDER BY id ASC"
+	case FilterOrderDesc:
+		query += " ORDER BY id DESC"
+	}
+	query += fmt.Sprintf(" LIMIT $%d", offset+1)
+	params = append(params, limit)
+
+	var stmt *sql.Stmt
+	var err error
+	if txn != nil {
+		stmt, err = txn.Prepare(query)
+	} else {
+		stmt, err = db.Prepare(query)
+	}
+	if err != nil {
+		return nil, nil, fmt.Errorf("s.db.Prepare: %w", err)
+	}
+	return stmt, params, nil
+}
diff --git a/syncapi/storage/sqlite3/invites_table.go b/syncapi/storage/sqlite3/invites_table.go
index f9dcfdbc..7498fd68 100644
--- a/syncapi/storage/sqlite3/invites_table.go
+++ b/syncapi/storage/sqlite3/invites_table.go
@@ -93,7 +93,7 @@ func NewSqliteInvitesTable(db *sql.DB, streamID *streamIDStatements) (tables.Inv
 func (s *inviteEventsStatements) InsertInviteEvent(
 	ctx context.Context, txn *sql.Tx, inviteEvent *gomatrixserverlib.HeaderedEvent,
 ) (streamPos types.StreamPosition, err error) {
-	streamPos, err = s.streamIDStatements.nextStreamID(ctx, txn)
+	streamPos, err = s.streamIDStatements.nextInviteID(ctx, txn)
 	if err != nil {
 		return
 	}
@@ -119,7 +119,7 @@ func (s *inviteEventsStatements) InsertInviteEvent(
 func (s *inviteEventsStatements) DeleteInviteEvent(
 	ctx context.Context, txn *sql.Tx, inviteEventID string,
 ) (types.StreamPosition, error) {
-	streamPos, err := s.streamIDStatements.nextStreamID(ctx, txn)
+	streamPos, err := s.streamIDStatements.nextInviteID(ctx, txn)
 	if err != nil {
 		return streamPos, err
 	}
diff --git a/syncapi/storage/sqlite3/output_room_events_table.go b/syncapi/storage/sqlite3/output_room_events_table.go
index edbd36fb..019aba8b 100644
--- a/syncapi/storage/sqlite3/output_room_events_table.go
+++ b/syncapi/storage/sqlite3/output_room_events_table.go
@@ -19,6 +19,7 @@ import (
 	"context"
 	"database/sql"
 	"encoding/json"
+	"fmt"
 	"sort"
 
 	"github.com/matrix-org/dendrite/internal"
@@ -60,18 +61,18 @@ const selectEventsSQL = "" +
 
 const selectRecentEventsSQL = "" +
 	"SELECT event_id, id, headered_event_json, session_id, exclude_from_sync, transaction_id FROM syncapi_output_room_events" +
-	" WHERE room_id = $1 AND id > $2 AND id <= $3" +
-	" ORDER BY id DESC LIMIT $4"
+	" WHERE room_id = $1 AND id > $2 AND id <= $3"
+	// WHEN, ORDER BY and LIMIT are appended by prepareWithFilters
 
 const selectRecentEventsForSyncSQL = "" +
 	"SELECT event_id, id, headered_event_json, session_id, exclude_from_sync, transaction_id FROM syncapi_output_room_events" +
-	" WHERE room_id = $1 AND id > $2 AND id <= $3 AND exclude_from_sync = FALSE" +
-	" ORDER BY id DESC LIMIT $4"
+	" WHERE room_id = $1 AND id > $2 AND id <= $3 AND exclude_from_sync = FALSE"
+	// WHEN, ORDER BY and LIMIT are appended by prepareWithFilters
 
 const selectEarlyEventsSQL = "" +
 	"SELECT event_id, id, headered_event_json, session_id, exclude_from_sync, transaction_id FROM syncapi_output_room_events" +
-	" WHERE room_id = $1 AND id > $2 AND id <= $3" +
-	" ORDER BY id ASC LIMIT $4"
+	" WHERE room_id = $1 AND id > $2 AND id <= $3"
+	// WHEN, ORDER BY and LIMIT are appended by prepareWithFilters
 
 const selectMaxEventIDSQL = "" +
 	"SELECT MAX(id) FROM syncapi_output_room_events"
@@ -79,45 +80,24 @@ const selectMaxEventIDSQL = "" +
 const updateEventJSONSQL = "" +
 	"UPDATE syncapi_output_room_events SET headered_event_json=$1 WHERE event_id=$2"
 
-// In order for us to apply the state updates correctly, rows need to be ordered in the order they were received (id).
-/*
-	$1 = oldPos,
-	$2 = newPos,
-	$3 = pq.StringArray(stateFilterPart.Senders),
-	$4 = pq.StringArray(stateFilterPart.NotSenders),
-	$5 = pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.Types)),
-	$6 = pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.NotTypes)),
-	$7 = stateFilterPart.ContainsURL,
-	$8 = stateFilterPart.Limit,
-*/
 const selectStateInRangeSQL = "" +
 	"SELECT id, headered_event_json, exclude_from_sync, add_state_ids, remove_state_ids" +
 	" FROM syncapi_output_room_events" +
-	" WHERE (id > $1 AND id <= $2)" + // old/new pos
-	" AND (add_state_ids IS NOT NULL OR remove_state_ids IS NOT NULL)" +
-	/*	" AND ( $3 IS NULL OR     sender  IN ($3)  )" + // sender
-		" AND ( $4 IS NULL OR NOT(sender  IN ($4)) )" + // not sender
-		" AND ( $5 IS NULL OR     type    IN ($5)  )" + // type
-		" AND ( $6 IS NULL OR NOT(type    IN ($6)) )" + // not type
-		" AND ( $7 IS NULL OR     contains_url = $7)" + // contains URL? */
-	" ORDER BY id ASC" +
-	" LIMIT $8" // limit
+	" WHERE (id > $1 AND id <= $2)" +
+	" AND ((add_state_ids IS NOT NULL AND add_state_ids != '') OR (remove_state_ids IS NOT NULL AND remove_state_ids != ''))"
+	// WHEN, ORDER BY and LIMIT are appended by prepareWithFilters
 
 const deleteEventsForRoomSQL = "" +
 	"DELETE FROM syncapi_output_room_events WHERE room_id = $1"
 
 type outputRoomEventsStatements struct {
-	db                            *sql.DB
-	streamIDStatements            *streamIDStatements
-	insertEventStmt               *sql.Stmt
-	selectEventsStmt              *sql.Stmt
-	selectMaxEventIDStmt          *sql.Stmt
-	selectRecentEventsStmt        *sql.Stmt
-	selectRecentEventsForSyncStmt *sql.Stmt
-	selectEarlyEventsStmt         *sql.Stmt
-	selectStateInRangeStmt        *sql.Stmt
-	updateEventJSONStmt           *sql.Stmt
-	deleteEventsForRoomStmt       *sql.Stmt
+	db                      *sql.DB
+	streamIDStatements      *streamIDStatements
+	insertEventStmt         *sql.Stmt
+	selectEventsStmt        *sql.Stmt
+	selectMaxEventIDStmt    *sql.Stmt
+	updateEventJSONStmt     *sql.Stmt
+	deleteEventsForRoomStmt *sql.Stmt
 }
 
 func NewSqliteEventsTable(db *sql.DB, streamID *streamIDStatements) (tables.Events, error) {
@@ -138,18 +118,6 @@ func NewSqliteEventsTable(db *sql.DB, streamID *streamIDStatements) (tables.Even
 	if s.selectMaxEventIDStmt, err = db.Prepare(selectMaxEventIDSQL); err != nil {
 		return nil, err
 	}
-	if s.selectRecentEventsStmt, err = db.Prepare(selectRecentEventsSQL); err != nil {
-		return nil, err
-	}
-	if s.selectRecentEventsForSyncStmt, err = db.Prepare(selectRecentEventsForSyncSQL); err != nil {
-		return nil, err
-	}
-	if s.selectEarlyEventsStmt, err = db.Prepare(selectEarlyEventsSQL); err != nil {
-		return nil, err
-	}
-	if s.selectStateInRangeStmt, err = db.Prepare(selectStateInRangeSQL); err != nil {
-		return nil, err
-	}
 	if s.updateEventJSONStmt, err = db.Prepare(updateEventJSONSQL); err != nil {
 		return nil, err
 	}
@@ -173,20 +141,23 @@ func (s *outputRoomEventsStatements) UpdateEventJSON(ctx context.Context, event
 // two positions, only the most recent state is returned.
 func (s *outputRoomEventsStatements) SelectStateInRange(
 	ctx context.Context, txn *sql.Tx, r types.Range,
-	stateFilterPart *gomatrixserverlib.StateFilter,
+	stateFilter *gomatrixserverlib.StateFilter,
 ) (map[string]map[string]bool, map[string]types.StreamEvent, error) {
-	stmt := sqlutil.TxStmt(txn, s.selectStateInRangeStmt)
-
-	rows, err := stmt.QueryContext(
-		ctx, r.Low(), r.High(),
-		/*pq.StringArray(stateFilterPart.Senders),
-		pq.StringArray(stateFilterPart.NotSenders),
-		pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.Types)),
-		pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.NotTypes)),
-		stateFilterPart.ContainsURL,*/
-		stateFilterPart.Limit,
+	stmt, params, err := prepareWithFilters(
+		s.db, txn, selectStateInRangeSQL,
+		[]interface{}{
+			r.Low(), r.High(),
+		},
+		stateFilter.Senders, stateFilter.NotSenders,
+		stateFilter.Types, stateFilter.NotTypes,
+		stateFilter.Limit, FilterOrderAsc,
 	)
 	if err != nil {
+		return nil, nil, fmt.Errorf("s.prepareWithFilters: %w", err)
+	}
+
+	rows, err := stmt.QueryContext(ctx, params...)
+	if err != nil {
 		return nil, nil, err
 	}
 	defer rows.Close() // nolint: errcheck
@@ -298,16 +269,21 @@ func (s *outputRoomEventsStatements) InsertEvent(
 		return 0, err
 	}
 
-	addStateJSON, err := json.Marshal(addState)
+	var addStateJSON, removeStateJSON []byte
+	if len(addState) > 0 {
+		addStateJSON, err = json.Marshal(addState)
+	}
 	if err != nil {
-		return 0, err
+		return 0, fmt.Errorf("json.Marshal(addState): %w", err)
+	}
+	if len(removeState) > 0 {
+		removeStateJSON, err = json.Marshal(removeState)
 	}
-	removeStateJSON, err := json.Marshal(removeState)
 	if err != nil {
-		return 0, err
+		return 0, fmt.Errorf("json.Marshal(removeState): %w", err)
 	}
 
-	streamPos, err := s.streamIDStatements.nextStreamID(ctx, txn)
+	streamPos, err := s.streamIDStatements.nextPDUID(ctx, txn)
 	if err != nil {
 		return 0, err
 	}
@@ -333,17 +309,30 @@ func (s *outputRoomEventsStatements) InsertEvent(
 
 func (s *outputRoomEventsStatements) SelectRecentEvents(
 	ctx context.Context, txn *sql.Tx,
-	roomID string, r types.Range, limit int,
+	roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter,
 	chronologicalOrder bool, onlySyncEvents bool,
 ) ([]types.StreamEvent, bool, error) {
-	var stmt *sql.Stmt
+	var query string
 	if onlySyncEvents {
-		stmt = sqlutil.TxStmt(txn, s.selectRecentEventsForSyncStmt)
+		query = selectRecentEventsForSyncSQL
 	} else {
-		stmt = sqlutil.TxStmt(txn, s.selectRecentEventsStmt)
+		query = selectRecentEventsSQL
 	}
 
-	rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit+1)
+	stmt, params, err := prepareWithFilters(
+		s.db, txn, query,
+		[]interface{}{
+			roomID, r.Low(), r.High(),
+		},
+		eventFilter.Senders, eventFilter.NotSenders,
+		eventFilter.Types, eventFilter.NotTypes,
+		eventFilter.Limit+1, FilterOrderDesc,
+	)
+	if err != nil {
+		return nil, false, fmt.Errorf("s.prepareWithFilters: %w", err)
+	}
+
+	rows, err := stmt.QueryContext(ctx, params...)
 	if err != nil {
 		return nil, false, err
 	}
@@ -362,7 +351,7 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
 	}
 	// we queried for 1 more than the limit, so if we returned one more mark limited=true
 	limited := false
-	if len(events) > limit {
+	if len(events) > eventFilter.Limit {
 		limited = true
 		// re-slice the extra (oldest) event out: in chronological order this is the first entry, else the last.
 		if chronologicalOrder {
@@ -376,10 +365,21 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
 
 func (s *outputRoomEventsStatements) SelectEarlyEvents(
 	ctx context.Context, txn *sql.Tx,
-	roomID string, r types.Range, limit int,
+	roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter,
 ) ([]types.StreamEvent, error) {
-	stmt := sqlutil.TxStmt(txn, s.selectEarlyEventsStmt)
-	rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit)
+	stmt, params, err := prepareWithFilters(
+		s.db, txn, selectEarlyEventsSQL,
+		[]interface{}{
+			roomID, r.Low(), r.High(),
+		},
+		eventFilter.Senders, eventFilter.NotSenders,
+		eventFilter.Types, eventFilter.NotTypes,
+		eventFilter.Limit, FilterOrderAsc,
+	)
+	if err != nil {
+		return nil, fmt.Errorf("s.prepareWithFilters: %w", err)
+	}
+	rows, err := stmt.QueryContext(ctx, params...)
 	if err != nil {
 		return nil, err
 	}
diff --git a/syncapi/storage/sqlite3/peeks_table.go b/syncapi/storage/sqlite3/peeks_table.go
index d755e28c..c93c8205 100644
--- a/syncapi/storage/sqlite3/peeks_table.go
+++ b/syncapi/storage/sqlite3/peeks_table.go
@@ -108,7 +108,7 @@ func NewSqlitePeeksTable(db *sql.DB, streamID *streamIDStatements) (tables.Peeks
 func (s *peekStatements) InsertPeek(
 	ctx context.Context, txn *sql.Tx, roomID, userID, deviceID string,
 ) (streamPos types.StreamPosition, err error) {
-	streamPos, err = s.streamIDStatements.nextStreamID(ctx, txn)
+	streamPos, err = s.streamIDStatements.nextPDUID(ctx, txn)
 	if err != nil {
 		return
 	}
@@ -120,7 +120,7 @@ func (s *peekStatements) InsertPeek(
 func (s *peekStatements) DeletePeek(
 	ctx context.Context, txn *sql.Tx, roomID, userID, deviceID string,
 ) (streamPos types.StreamPosition, err error) {
-	streamPos, err = s.streamIDStatements.nextStreamID(ctx, txn)
+	streamPos, err = s.streamIDStatements.nextPDUID(ctx, txn)
 	if err != nil {
 		return
 	}
@@ -131,7 +131,7 @@ func (s *peekStatements) DeletePeek(
 func (s *peekStatements) DeletePeeks(
 	ctx context.Context, txn *sql.Tx, roomID, userID string,
 ) (types.StreamPosition, error) {
-	streamPos, err := s.streamIDStatements.nextStreamID(ctx, txn)
+	streamPos, err := s.streamIDStatements.nextPDUID(ctx, txn)
 	if err != nil {
 		return 0, err
 	}
diff --git a/syncapi/storage/sqlite3/stream_id_table.go b/syncapi/storage/sqlite3/stream_id_table.go
index f73be422..b614271d 100644
--- a/syncapi/storage/sqlite3/stream_id_table.go
+++ b/syncapi/storage/sqlite3/stream_id_table.go
@@ -20,6 +20,10 @@ INSERT INTO syncapi_stream_id (stream_name, stream_id) VALUES ("global", 0)
   ON CONFLICT DO NOTHING;
 INSERT INTO syncapi_stream_id (stream_name, stream_id) VALUES ("receipt", 0)
   ON CONFLICT DO NOTHING;
+INSERT INTO syncapi_stream_id (stream_name, stream_id) VALUES ("accountdata", 0)
+  ON CONFLICT DO NOTHING;
+INSERT INTO syncapi_stream_id (stream_name, stream_id) VALUES ("invite", 0)
+  ON CONFLICT DO NOTHING;
 `
 
 const increaseStreamIDStmt = "" +
@@ -49,7 +53,7 @@ func (s *streamIDStatements) prepare(db *sql.DB) (err error) {
 	return
 }
 
-func (s *streamIDStatements) nextStreamID(ctx context.Context, txn *sql.Tx) (pos types.StreamPosition, err error) {
+func (s *streamIDStatements) nextPDUID(ctx context.Context, txn *sql.Tx) (pos types.StreamPosition, err error) {
 	increaseStmt := sqlutil.TxStmt(txn, s.increaseStreamIDStmt)
 	selectStmt := sqlutil.TxStmt(txn, s.selectStreamIDStmt)
 	if _, err = increaseStmt.ExecContext(ctx, "global"); err != nil {
@@ -68,3 +72,23 @@ func (s *streamIDStatements) nextReceiptID(ctx context.Context, txn *sql.Tx) (po
 	err = selectStmt.QueryRowContext(ctx, "receipt").Scan(&pos)
 	return
 }
+
+func (s *streamIDStatements) nextInviteID(ctx context.Context, txn *sql.Tx) (pos types.StreamPosition, err error) {
+	increaseStmt := sqlutil.TxStmt(txn, s.increaseStreamIDStmt)
+	selectStmt := sqlutil.TxStmt(txn, s.selectStreamIDStmt)
+	if _, err = increaseStmt.ExecContext(ctx, "invite"); err != nil {
+		return
+	}
+	err = selectStmt.QueryRowContext(ctx, "invite").Scan(&pos)
+	return
+}
+
+func (s *streamIDStatements) nextAccountDataID(ctx context.Context, txn *sql.Tx) (pos types.StreamPosition, err error) {
+	increaseStmt := sqlutil.TxStmt(txn, s.increaseStreamIDStmt)
+	selectStmt := sqlutil.TxStmt(txn, s.selectStreamIDStmt)
+	if _, err = increaseStmt.ExecContext(ctx, "accountdata"); err != nil {
+		return
+	}
+	err = selectStmt.QueryRowContext(ctx, "accountdata").Scan(&pos)
+	return
+}
diff --git a/syncapi/storage/tables/interface.go b/syncapi/storage/tables/interface.go
index fca88824..73967677 100644
--- a/syncapi/storage/tables/interface.go
+++ b/syncapi/storage/tables/interface.go
@@ -56,9 +56,9 @@ type Events interface {
 	// SelectRecentEvents returns events between the two stream positions: exclusive of low and inclusive of high.
 	// If onlySyncEvents has a value of true, only returns the events that aren't marked as to exclude from sync.
 	// Returns up to `limit` events. Returns `limited=true` if there are more events in this range but we hit the `limit`.
-	SelectRecentEvents(ctx context.Context, txn *sql.Tx, roomID string, r types.Range, limit int, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, bool, error)
+	SelectRecentEvents(ctx context.Context, txn *sql.Tx, roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, bool, error)
 	// SelectEarlyEvents returns the earliest events in the given room.
-	SelectEarlyEvents(ctx context.Context, txn *sql.Tx, roomID string, r types.Range, limit int) ([]types.StreamEvent, error)
+	SelectEarlyEvents(ctx context.Context, txn *sql.Tx, roomID string, r types.Range, eventFilter *gomatrixserverlib.RoomEventFilter) ([]types.StreamEvent, error)
 	SelectEvents(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]types.StreamEvent, error)
 	UpdateEventJSON(ctx context.Context, event *gomatrixserverlib.HeaderedEvent) error
 	// DeleteEventsForRoom removes all event information for a room. This should only be done when removing the room entirely.
diff --git a/syncapi/streams/stream_pdu.go b/syncapi/streams/stream_pdu.go
index 483be575..d6d7ff44 100644
--- a/syncapi/streams/stream_pdu.go
+++ b/syncapi/streams/stream_pdu.go
@@ -48,13 +48,14 @@ func (p *PDUStreamProvider) CompleteSync(
 		return from
 	}
 
-	stateFilter := gomatrixserverlib.DefaultStateFilter() // TODO: use filter provided in request
+	stateFilter := req.Filter.Room.State
+	eventFilter := req.Filter.Room.Timeline
 
 	// Build up a /sync response. Add joined rooms.
 	for _, roomID := range joinedRoomIDs {
 		var jr *types.JoinResponse
 		jr, err = p.getJoinResponseForCompleteSync(
-			ctx, roomID, r, &stateFilter, req.Limit, req.Device,
+			ctx, roomID, r, &stateFilter, &eventFilter, req.Device,
 		)
 		if err != nil {
 			req.Log.WithError(err).Error("p.getJoinResponseForCompleteSync failed")
@@ -74,7 +75,7 @@ func (p *PDUStreamProvider) CompleteSync(
 		if !peek.Deleted {
 			var jr *types.JoinResponse
 			jr, err = p.getJoinResponseForCompleteSync(
-				ctx, peek.RoomID, r, &stateFilter, req.Limit, req.Device,
+				ctx, peek.RoomID, r, &stateFilter, &eventFilter, req.Device,
 			)
 			if err != nil {
 				req.Log.WithError(err).Error("p.getJoinResponseForCompleteSync failed")
@@ -104,8 +105,8 @@ func (p *PDUStreamProvider) IncrementalSync(
 	var stateDeltas []types.StateDelta
 	var joinedRooms []string
 
-	// TODO: use filter provided in request
-	stateFilter := gomatrixserverlib.DefaultStateFilter()
+	stateFilter := req.Filter.Room.State
+	eventFilter := req.Filter.Room.Timeline
 
 	if req.WantFullState {
 		if stateDeltas, joinedRooms, err = p.DB.GetStateDeltasForFullStateSync(ctx, req.Device, r, req.Device.UserID, &stateFilter); err != nil {
@@ -124,7 +125,7 @@ func (p *PDUStreamProvider) IncrementalSync(
 	}
 
 	for _, delta := range stateDeltas {
-		if err = p.addRoomDeltaToResponse(ctx, req.Device, r, delta, req.Limit, req.Response); err != nil {
+		if err = p.addRoomDeltaToResponse(ctx, req.Device, r, delta, &eventFilter, req.Response); err != nil {
 			req.Log.WithError(err).Error("d.addRoomDeltaToResponse failed")
 			return newPos
 		}
@@ -138,7 +139,7 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 	device *userapi.Device,
 	r types.Range,
 	delta types.StateDelta,
-	numRecentEventsPerRoom int,
+	eventFilter *gomatrixserverlib.RoomEventFilter,
 	res *types.Response,
 ) error {
 	if delta.MembershipPos > 0 && delta.Membership == gomatrixserverlib.Leave {
@@ -152,7 +153,7 @@ func (p *PDUStreamProvider) addRoomDeltaToResponse(
 	}
 	recentStreamEvents, limited, err := p.DB.RecentEvents(
 		ctx, delta.RoomID, r,
-		numRecentEventsPerRoom, true, true,
+		eventFilter, true, true,
 	)
 	if err != nil {
 		return err
@@ -209,7 +210,8 @@ func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
 	roomID string,
 	r types.Range,
 	stateFilter *gomatrixserverlib.StateFilter,
-	numRecentEventsPerRoom int, device *userapi.Device,
+	eventFilter *gomatrixserverlib.RoomEventFilter,
+	device *userapi.Device,
 ) (jr *types.JoinResponse, err error) {
 	var stateEvents []*gomatrixserverlib.HeaderedEvent
 	stateEvents, err = p.DB.CurrentState(ctx, roomID, stateFilter)
@@ -221,7 +223,7 @@ func (p *PDUStreamProvider) getJoinResponseForCompleteSync(
 	var recentStreamEvents []types.StreamEvent
 	var limited bool
 	recentStreamEvents, limited, err = p.DB.RecentEvents(
-		ctx, roomID, r, numRecentEventsPerRoom, true, true,
+		ctx, roomID, r, eventFilter, true, true,
 	)
 	if err != nil {
 		return
diff --git a/syncapi/sync/request.go b/syncapi/sync/request.go
index 5f89ffc3..09a62e3d 100644
--- a/syncapi/sync/request.go
+++ b/syncapi/sync/request.go
@@ -16,6 +16,7 @@ package sync
 
 import (
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"strconv"
 	"time"
@@ -31,14 +32,6 @@ import (
 const defaultSyncTimeout = time.Duration(0)
 const DefaultTimelineLimit = 20
 
-type filter struct {
-	Room struct {
-		Timeline struct {
-			Limit *int `json:"limit"`
-		} `json:"timeline"`
-	} `json:"room"`
-}
-
 func newSyncRequest(req *http.Request, device userapi.Device, syncDB storage.Database) (*types.SyncRequest, error) {
 	timeout := getTimeout(req.URL.Query().Get("timeout"))
 	fullState := req.URL.Query().Get("full_state")
@@ -51,41 +44,37 @@ func newSyncRequest(req *http.Request, device userapi.Device, syncDB storage.Dat
 			return nil, err
 		}
 	}
-	timelineLimit := DefaultTimelineLimit
 	// TODO: read from stored filters too
+	filter := gomatrixserverlib.DefaultFilter()
 	filterQuery := req.URL.Query().Get("filter")
 	if filterQuery != "" {
 		if filterQuery[0] == '{' {
-			// attempt to parse the timeline limit at least
-			var f filter
-			err := json.Unmarshal([]byte(filterQuery), &f)
-			if err == nil && f.Room.Timeline.Limit != nil {
-				timelineLimit = *f.Room.Timeline.Limit
+			// Parse the filter from the query string
+			if err := json.Unmarshal([]byte(filterQuery), &filter); err != nil {
+				return nil, fmt.Errorf("json.Unmarshal: %w", err)
 			}
 		} else {
-			// attempt to load the filter ID
+			// Try to load the filter from the database
 			localpart, _, err := gomatrixserverlib.SplitID('@', device.UserID)
 			if err != nil {
 				util.GetLogger(req.Context()).WithError(err).Error("gomatrixserverlib.SplitID failed")
-				return nil, err
+				return nil, fmt.Errorf("gomatrixserverlib.SplitID: %w", err)
 			}
-			f, err := syncDB.GetFilter(req.Context(), localpart, filterQuery)
-			if err == nil {
-				timelineLimit = f.Room.Timeline.Limit
+			if f, err := syncDB.GetFilter(req.Context(), localpart, filterQuery); err != nil {
+				util.GetLogger(req.Context()).WithError(err).Error("syncDB.GetFilter failed")
+				return nil, fmt.Errorf("syncDB.GetFilter: %w", err)
+			} else {
+				filter = *f
 			}
 		}
 	}
 
-	filter := gomatrixserverlib.DefaultEventFilter()
-	filter.Limit = timelineLimit
-	// TODO: Additional query params: set_presence, filter
-
 	logger := util.GetLogger(req.Context()).WithFields(logrus.Fields{
 		"user_id":   device.UserID,
 		"device_id": device.ID,
 		"since":     since,
 		"timeout":   timeout,
-		"limit":     timelineLimit,
+		"limit":     filter.Room.Timeline.Limit,
 	})
 
 	return &types.SyncRequest{
@@ -96,7 +85,6 @@ func newSyncRequest(req *http.Request, device userapi.Device, syncDB storage.Dat
 		Filter:        filter,                  //
 		Since:         since,                   //
 		Timeout:       timeout,                 //
-		Limit:         timelineLimit,           //
 		Rooms:         make(map[string]string), // Populated by the PDU stream
 		WantFullState: wantFullState,           //
 	}, nil
diff --git a/syncapi/types/provider.go b/syncapi/types/provider.go
index 24b453a8..93ed1266 100644
--- a/syncapi/types/provider.go
+++ b/syncapi/types/provider.go
@@ -14,9 +14,8 @@ type SyncRequest struct {
 	Log           *logrus.Entry
 	Device        *userapi.Device
 	Response      *Response
-	Filter        gomatrixserverlib.EventFilter
+	Filter        gomatrixserverlib.Filter
 	Since         StreamingToken
-	Limit         int
 	Timeout       time.Duration
 	WantFullState bool
 
diff --git a/sytest-whitelist b/sytest-whitelist
index cb84913b..b2dcbf5e 100644
--- a/sytest-whitelist
+++ b/sytest-whitelist
@@ -503,3 +503,8 @@ A next_batch token can be used in the v1 messages API
 Users receive device_list updates for their own devices
 m.room.history_visibility == "world_readable" allows/forbids appropriately for Guest users
 m.room.history_visibility == "world_readable" allows/forbids appropriately for Real users
+State is included in the timeline in the initial sync
+State from remote users is included in the state in the initial sync
+Changes to state are included in an gapped incremental sync
+A full_state incremental update returns all state
+Can pass a JSON filter as a query parameter