Clean up syncapi storage to match the coding style set by roomserver storage (#131)
Mark Haines
GitHub
parent
ef7b934d51
commit
721c2df484
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@ -16,9 +16,6 @@ package storage
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import (
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"database/sql"
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"encoding/json"
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"github.com/matrix-org/dendrite/clientapi/events"
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"github.com/matrix-org/gomatrixserverlib"
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)
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@ -96,7 +93,7 @@ func (s *currentRoomStateStatements) prepare(db *sql.DB) (err error) {
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}
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// JoinedMemberLists returns a map of room ID to a list of joined user IDs.
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func (s *currentRoomStateStatements) JoinedMemberLists() (map[string][]string, error) {
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func (s *currentRoomStateStatements) selectJoinedUsers() (map[string][]string, error) {
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rows, err := s.selectJoinedUsersStmt.Query()
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if err != nil {
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return nil, err
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@ -118,7 +115,7 @@ func (s *currentRoomStateStatements) JoinedMemberLists() (map[string][]string, e
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}
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// SelectRoomIDsWithMembership returns the list of room IDs which have the given user in the given membership state.
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func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(txn *sql.Tx, userID, membership string) ([]string, error) {
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func (s *currentRoomStateStatements) selectRoomIDsWithMembership(txn *sql.Tx, userID, membership string) ([]string, error) {
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rows, err := txn.Stmt(s.selectRoomIDsWithMembershipStmt).Query(userID, membership)
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if err != nil {
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return nil, err
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@ -137,7 +134,7 @@ func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(txn *sql.Tx, us
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}
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// CurrentState returns all the current state events for the given room.
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func (s *currentRoomStateStatements) CurrentState(txn *sql.Tx, roomID string) ([]gomatrixserverlib.Event, error) {
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func (s *currentRoomStateStatements) selectCurrentState(txn *sql.Tx, roomID string) ([]gomatrixserverlib.Event, error) {
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rows, err := txn.Stmt(s.selectCurrentStateStmt).Query(roomID)
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if err != nil {
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return nil, err
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@ -160,34 +157,14 @@ func (s *currentRoomStateStatements) CurrentState(txn *sql.Tx, roomID string) ([
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return result, nil
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}
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func (s *currentRoomStateStatements) UpdateRoomState(txn *sql.Tx, added []gomatrixserverlib.Event, removedEventIDs []string) error {
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// remove first, then add, as we do not ever delete state, but do replace state which is a remove followed by an add.
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for _, eventID := range removedEventIDs {
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func (s *currentRoomStateStatements) deleteRoomStateByEventID(txn *sql.Tx, eventID string) error {
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_, err := txn.Stmt(s.deleteRoomStateByEventIDStmt).Exec(eventID)
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if err != nil {
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return err
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}
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}
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}
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for _, event := range added {
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if event.StateKey() == nil {
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// ignore non state events
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continue
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}
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var membership *string
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if event.Type() == "m.room.member" {
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var memberContent events.MemberContent
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if err := json.Unmarshal(event.Content(), &memberContent); err != nil {
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return err
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}
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membership = &memberContent.Membership
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}
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func (s *currentRoomStateStatements) upsertRoomState(txn *sql.Tx, event gomatrixserverlib.Event, membership *string) error {
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_, err := txn.Stmt(s.upsertRoomStateStmt).Exec(
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event.RoomID(), event.EventID(), event.Type(), *event.StateKey(), event.JSON(), membership,
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)
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if err != nil {
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return err
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}
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}
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return nil
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}
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@ -95,13 +95,15 @@ func (s *outputRoomEventsStatements) prepare(db *sql.DB) (err error) {
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return
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}
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// StateBetween returns the state events between the two given stream positions, exclusive of oldPos, inclusive of newPos.
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// selectStateInRange returns the state events between the two given stream positions, exclusive of oldPos, inclusive of newPos.
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// Results are bucketed based on the room ID. If the same state is overwritten multiple times between the
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// two positions, only the most recent state is returned.
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func (s *outputRoomEventsStatements) StateBetween(txn *sql.Tx, oldPos, newPos types.StreamPosition) (map[string][]streamEvent, error) {
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func (s *outputRoomEventsStatements) selectStateInRange(
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txn *sql.Tx, oldPos, newPos types.StreamPosition,
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) (map[string]map[string]bool, map[string]streamEvent, error) {
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rows, err := txn.Stmt(s.selectStateInRangeStmt).Query(oldPos, newPos)
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if err != nil {
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return nil, err
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return nil, nil, err
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}
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// Fetch all the state change events for all rooms between the two positions then loop each event and:
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// - Keep a cache of the event by ID (99% of state change events are for the event itself)
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@ -121,7 +123,7 @@ func (s *outputRoomEventsStatements) StateBetween(txn *sql.Tx, oldPos, newPos ty
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delIDs pq.StringArray
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)
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if err := rows.Scan(&streamPos, &eventBytes, &addIDs, &delIDs); err != nil {
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return nil, err
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return nil, nil, err
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}
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// Sanity check for deleted state and whine if we see it. We don't need to do anything
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// since it'll just mark the event as not being needed.
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@ -137,7 +139,7 @@ func (s *outputRoomEventsStatements) StateBetween(txn *sql.Tx, oldPos, newPos ty
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// TODO: Handle redacted events
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ev, err := gomatrixserverlib.NewEventFromTrustedJSON(eventBytes, false)
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if err != nil {
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return nil, err
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return nil, nil, err
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}
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needSet := stateNeeded[ev.RoomID()]
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if needSet == nil { // make set if required
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@ -154,56 +156,13 @@ func (s *outputRoomEventsStatements) StateBetween(txn *sql.Tx, oldPos, newPos ty
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eventIDToEvent[ev.EventID()] = streamEvent{ev, types.StreamPosition(streamPos)}
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}
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return s.fetchStateEvents(txn, stateNeeded, eventIDToEvent)
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}
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// fetchStateEvents converts the set of event IDs into a set of events. It will fetch any which are missing from the database.
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// Returns a map of room ID to list of events.
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func (s *outputRoomEventsStatements) fetchStateEvents(txn *sql.Tx, roomIDToEventIDSet map[string]map[string]bool, eventIDToEvent map[string]streamEvent) (map[string][]streamEvent, error) {
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stateBetween := make(map[string][]streamEvent)
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missingEvents := make(map[string][]string)
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for roomID, ids := range roomIDToEventIDSet {
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events := stateBetween[roomID]
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for id, need := range ids {
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if !need {
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continue // deleted state
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}
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e, ok := eventIDToEvent[id]
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if ok {
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events = append(events, e)
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} else {
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m := missingEvents[roomID]
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m = append(m, id)
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missingEvents[roomID] = m
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}
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}
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stateBetween[roomID] = events
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}
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if len(missingEvents) > 0 {
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// This happens when add_state_ids has an event ID which is not in the provided range.
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// We need to explicitly fetch them.
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allMissingEventIDs := []string{}
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for _, missingEvIDs := range missingEvents {
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allMissingEventIDs = append(allMissingEventIDs, missingEvIDs...)
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}
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evs, err := s.Events(txn, allMissingEventIDs)
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if err != nil {
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return nil, err
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}
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// we know we got them all otherwise an error would've been returned, so just loop the events
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for _, ev := range evs {
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roomID := ev.RoomID()
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stateBetween[roomID] = append(stateBetween[roomID], ev)
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}
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}
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return stateBetween, nil
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return stateNeeded, eventIDToEvent, nil
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}
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// MaxID returns the ID of the last inserted event in this table. 'txn' is optional. If it is not supplied,
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// then this function should only ever be used at startup, as it will race with inserting events if it is
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// done afterwards. If there are no inserted events, 0 is returned.
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func (s *outputRoomEventsStatements) MaxID(txn *sql.Tx) (id int64, err error) {
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func (s *outputRoomEventsStatements) selectMaxID(txn *sql.Tx) (id int64, err error) {
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stmt := s.selectMaxIDStmt
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if txn != nil {
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stmt = txn.Stmt(stmt)
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@ -218,7 +177,7 @@ func (s *outputRoomEventsStatements) MaxID(txn *sql.Tx) (id int64, err error) {
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// InsertEvent into the output_room_events table. addState and removeState are an optional list of state event IDs. Returns the position
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// of the inserted event.
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func (s *outputRoomEventsStatements) InsertEvent(txn *sql.Tx, event *gomatrixserverlib.Event, addState, removeState []string) (streamPos int64, err error) {
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func (s *outputRoomEventsStatements) insertEvent(txn *sql.Tx, event *gomatrixserverlib.Event, addState, removeState []string) (streamPos int64, err error) {
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err = txn.Stmt(s.insertEventStmt).QueryRow(
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event.RoomID(), event.EventID(), event.JSON(), pq.StringArray(addState), pq.StringArray(removeState),
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).Scan(&streamPos)
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@ -226,7 +185,9 @@ func (s *outputRoomEventsStatements) InsertEvent(txn *sql.Tx, event *gomatrixser
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}
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// RecentEventsInRoom returns the most recent events in the given room, up to a maximum of 'limit'.
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func (s *outputRoomEventsStatements) RecentEventsInRoom(txn *sql.Tx, roomID string, fromPos, toPos types.StreamPosition, limit int) ([]streamEvent, error) {
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func (s *outputRoomEventsStatements) selectRecentEvents(
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txn *sql.Tx, roomID string, fromPos, toPos types.StreamPosition, limit int,
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) ([]streamEvent, error) {
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rows, err := s.selectRecentEventsStmt.Query(roomID, fromPos, toPos, limit)
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if err != nil {
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return nil, err
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@ -243,7 +204,7 @@ func (s *outputRoomEventsStatements) RecentEventsInRoom(txn *sql.Tx, roomID stri
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// Events returns the events for the given event IDs. Returns an error if any one of the event IDs given are missing
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// from the database.
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func (s *outputRoomEventsStatements) Events(txn *sql.Tx, eventIDs []string) ([]streamEvent, error) {
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func (s *outputRoomEventsStatements) selectEvents(txn *sql.Tx, eventIDs []string) ([]streamEvent, error) {
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rows, err := txn.Stmt(s.selectEventsStmt).Query(pq.StringArray(eventIDs))
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if err != nil {
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return nil, err
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@ -72,7 +72,7 @@ func NewSyncServerDatabase(dataSourceName string) (*SyncServerDatabase, error) {
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// AllJoinedUsersInRooms returns a map of room ID to a list of all joined user IDs.
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func (d *SyncServerDatabase) AllJoinedUsersInRooms() (map[string][]string, error) {
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return d.roomstate.JoinedMemberLists()
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return d.roomstate.selectJoinedUsers()
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}
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// WriteEvent into the database. It is not safe to call this function from multiple goroutines, as it would create races
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@ -81,7 +81,7 @@ func (d *SyncServerDatabase) AllJoinedUsersInRooms() (map[string][]string, error
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func (d *SyncServerDatabase) WriteEvent(ev *gomatrixserverlib.Event, addStateEventIDs, removeStateEventIDs []string) (streamPos types.StreamPosition, returnErr error) {
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returnErr = runTransaction(d.db, func(txn *sql.Tx) error {
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var err error
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pos, err := d.events.InsertEvent(txn, ev, addStateEventIDs, removeStateEventIDs)
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pos, err := d.events.insertEvent(txn, ev, addStateEventIDs, removeStateEventIDs)
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if err != nil {
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return err
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}
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@ -97,22 +97,49 @@ func (d *SyncServerDatabase) WriteEvent(ev *gomatrixserverlib.Event, addStateEve
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// However, conflict resolution may result in there being different events being added, or even some removed.
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if len(removeStateEventIDs) == 0 && len(addStateEventIDs) == 1 && addStateEventIDs[0] == ev.EventID() {
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// common case
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if err = d.roomstate.UpdateRoomState(txn, []gomatrixserverlib.Event{*ev}, nil); err != nil {
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return err
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}
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return nil
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return d.updateRoomState(txn, nil, []gomatrixserverlib.Event{*ev})
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}
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// uncommon case: we need to fetch the full event for each event ID mentioned, then update room state
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added, err := d.events.Events(txn, addStateEventIDs)
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added, err := d.events.selectEvents(txn, addStateEventIDs)
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if err != nil {
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return err
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}
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return d.roomstate.UpdateRoomState(txn, streamEventsToEvents(added), removeStateEventIDs)
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return d.updateRoomState(txn, removeStateEventIDs, streamEventsToEvents(added))
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})
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return
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}
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func (d *SyncServerDatabase) updateRoomState(txn *sql.Tx, removedEventIDs []string, addedEvents []gomatrixserverlib.Event) error {
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// remove first, then add, as we do not ever delete state, but do replace state which is a remove followed by an add.
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for _, eventID := range removedEventIDs {
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if err := d.roomstate.deleteRoomStateByEventID(txn, eventID); err != nil {
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return err
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}
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}
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for _, event := range addedEvents {
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if event.StateKey() == nil {
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// ignore non state events
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continue
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}
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var membership *string
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if event.Type() == "m.room.member" {
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var memberContent events.MemberContent
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if err := json.Unmarshal(event.Content(), &memberContent); err != nil {
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return err
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}
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membership = &memberContent.Membership
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}
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if err := d.roomstate.upsertRoomState(txn, event, membership); err != nil {
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return err
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}
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}
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return nil
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}
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// PartitionOffsets implements common.PartitionStorer
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func (d *SyncServerDatabase) PartitionOffsets(topic string) ([]common.PartitionOffset, error) {
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return d.partitions.SelectPartitionOffsets(topic)
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@ -125,7 +152,7 @@ func (d *SyncServerDatabase) SetPartitionOffset(topic string, partition int32, o
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// SyncStreamPosition returns the latest position in the sync stream. Returns 0 if there are no events yet.
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func (d *SyncServerDatabase) SyncStreamPosition() (types.StreamPosition, error) {
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id, err := d.events.MaxID(nil)
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id, err := d.events.selectMaxID(nil)
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if err != nil {
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return types.StreamPosition(0), err
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}
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@ -156,7 +183,7 @@ func (d *SyncServerDatabase) IncrementalSync(userID string, fromPos, toPos types
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// This is all "okay" assuming history_visibility == "shared" which it is by default.
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endPos = delta.membershipPos
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}
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recentStreamEvents, err := d.events.RecentEventsInRoom(txn, delta.roomID, fromPos, endPos, numRecentEventsPerRoom)
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recentStreamEvents, err := d.events.selectRecentEvents(txn, delta.roomID, fromPos, endPos, numRecentEventsPerRoom)
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if err != nil {
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return err
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}
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@ -197,14 +224,14 @@ func (d *SyncServerDatabase) CompleteSync(userID string, numRecentEventsPerRoom
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// but it's better to not hide the fact that this is being done in a transaction.
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returnErr = runTransaction(d.db, func(txn *sql.Tx) error {
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// Get the current stream position which we will base the sync response on.
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id, err := d.events.MaxID(txn)
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id, err := d.events.selectMaxID(txn)
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if err != nil {
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return err
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}
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pos := types.StreamPosition(id)
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// Extract room state and recent events for all rooms the user is joined to.
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roomIDs, err := d.roomstate.SelectRoomIDsWithMembership(txn, userID, "join")
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roomIDs, err := d.roomstate.selectRoomIDsWithMembership(txn, userID, "join")
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if err != nil {
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return err
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}
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@ -212,13 +239,15 @@ func (d *SyncServerDatabase) CompleteSync(userID string, numRecentEventsPerRoom
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// Build up a /sync response. Add joined rooms.
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res = types.NewResponse(pos)
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for _, roomID := range roomIDs {
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stateEvents, err := d.roomstate.CurrentState(txn, roomID)
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stateEvents, err := d.roomstate.selectCurrentState(txn, roomID)
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if err != nil {
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return err
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}
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// TODO: When filters are added, we may need to call this multiple times to get enough events.
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// See: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L316
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recentStreamEvents, err := d.events.RecentEventsInRoom(txn, roomID, types.StreamPosition(0), pos, numRecentEventsPerRoom)
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recentStreamEvents, err := d.events.selectRecentEvents(
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txn, roomID, types.StreamPosition(0), pos, numRecentEventsPerRoom,
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)
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if err != nil {
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return err
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}
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@ -239,7 +268,7 @@ func (d *SyncServerDatabase) CompleteSync(userID string, numRecentEventsPerRoom
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func (d *SyncServerDatabase) addInvitesToResponse(txn *sql.Tx, userID string, res *types.Response) error {
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// Add invites - TODO: This will break over federation as they won't be in the current state table according to Mark.
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roomIDs, err := d.roomstate.SelectRoomIDsWithMembership(txn, userID, "invite")
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roomIDs, err := d.roomstate.selectRoomIDsWithMembership(txn, userID, "invite")
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if err != nil {
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return err
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}
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@ -251,6 +280,49 @@ func (d *SyncServerDatabase) addInvitesToResponse(txn *sql.Tx, userID string, re
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return nil
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}
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// fetchStateEvents converts the set of event IDs into a set of events. It will fetch any which are missing from the database.
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// Returns a map of room ID to list of events.
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func (d *SyncServerDatabase) fetchStateEvents(txn *sql.Tx, roomIDToEventIDSet map[string]map[string]bool, eventIDToEvent map[string]streamEvent) (map[string][]streamEvent, error) {
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stateBetween := make(map[string][]streamEvent)
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missingEvents := make(map[string][]string)
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for roomID, ids := range roomIDToEventIDSet {
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events := stateBetween[roomID]
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for id, need := range ids {
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if !need {
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continue // deleted state
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}
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e, ok := eventIDToEvent[id]
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if ok {
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events = append(events, e)
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} else {
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m := missingEvents[roomID]
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m = append(m, id)
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missingEvents[roomID] = m
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}
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}
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stateBetween[roomID] = events
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}
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if len(missingEvents) > 0 {
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// This happens when add_state_ids has an event ID which is not in the provided range.
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// We need to explicitly fetch them.
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allMissingEventIDs := []string{}
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for _, missingEvIDs := range missingEvents {
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allMissingEventIDs = append(allMissingEventIDs, missingEvIDs...)
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}
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evs, err := d.events.selectEvents(txn, allMissingEventIDs)
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if err != nil {
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return nil, err
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}
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||||
// we know we got them all otherwise an error would've been returned, so just loop the events
|
||||
for _, ev := range evs {
|
||||
roomID := ev.RoomID()
|
||||
stateBetween[roomID] = append(stateBetween[roomID], ev)
|
||||
}
|
||||
}
|
||||
return stateBetween, nil
|
||||
}
|
||||
|
||||
func (d *SyncServerDatabase) getStateDeltas(txn *sql.Tx, fromPos, toPos types.StreamPosition, userID string) ([]stateDelta, error) {
|
||||
// Implement membership change algorithm: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L821
|
||||
// - Get membership list changes for this user in this sync response
|
||||
|
|
@ -263,10 +335,15 @@ func (d *SyncServerDatabase) getStateDeltas(txn *sql.Tx, fromPos, toPos types.St
|
|||
var deltas []stateDelta
|
||||
|
||||
// get all the state events ever between these two positions
|
||||
state, err := d.events.StateBetween(txn, fromPos, toPos)
|
||||
stateNeeded, eventMap, err := d.events.selectStateInRange(txn, fromPos, toPos)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
state, err := d.fetchStateEvents(txn, stateNeeded, eventMap)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for roomID, stateStreamEvents := range state {
|
||||
for _, ev := range stateStreamEvents {
|
||||
// TODO: Currently this will incorrectly add rooms which were ALREADY joined but they sent another no-op join event.
|
||||
|
|
@ -278,7 +355,7 @@ func (d *SyncServerDatabase) getStateDeltas(txn *sql.Tx, fromPos, toPos types.St
|
|||
if membership == "join" {
|
||||
// send full room state down instead of a delta
|
||||
var allState []gomatrixserverlib.Event
|
||||
allState, err = d.roomstate.CurrentState(txn, roomID)
|
||||
allState, err = d.roomstate.selectCurrentState(txn, roomID)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
@ -302,7 +379,7 @@ func (d *SyncServerDatabase) getStateDeltas(txn *sql.Tx, fromPos, toPos types.St
|
|||
}
|
||||
|
||||
// Add in currently joined rooms
|
||||
joinedRoomIDs, err := d.roomstate.SelectRoomIDsWithMembership(txn, userID, "join")
|
||||
joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(txn, userID, "join")
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue