mirror of
https://github.com/1f349/dendrite.git
synced 2024-11-22 03:31:41 +00:00
parent
419ff150d4
commit
2b5052eccf
@ -64,7 +64,7 @@ type Database interface {
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// Returns a map following the format data[roomID] = []dataTypes
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// If no data is retrieved, returns an empty map
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// If there was an issue with the retrieval, returns an error
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GetAccountDataInRange(ctx context.Context, userID string, oldPos, newPos types.StreamPosition, accountDataFilterPart *gomatrixserverlib.EventFilter) (map[string][]string, error)
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GetAccountDataInRange(ctx context.Context, userID string, r types.Range, accountDataFilterPart *gomatrixserverlib.EventFilter) (map[string][]string, error)
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// UpsertAccountData keeps track of new or updated account data, by saving the type
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// of the new/updated data, and the user ID and room ID the data is related to (empty)
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// room ID means the data isn't specific to any room)
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@ -100,19 +100,12 @@ func (s *accountDataStatements) InsertAccountData(
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func (s *accountDataStatements) SelectAccountDataInRange(
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ctx context.Context,
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userID string,
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oldPos, newPos types.StreamPosition,
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r types.Range,
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accountDataEventFilter *gomatrixserverlib.EventFilter,
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) (data map[string][]string, err error) {
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data = make(map[string][]string)
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// If both positions are the same, it means that the data was saved after the
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// latest room event. In that case, we need to decrement the old position as
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// it would prevent the SQL request from returning anything.
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if oldPos == newPos {
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oldPos--
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}
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rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, oldPos, newPos,
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rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, r.Low(), r.High(),
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pq.StringArray(filterConvertTypeWildcardToSQL(accountDataEventFilter.Types)),
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pq.StringArray(filterConvertTypeWildcardToSQL(accountDataEventFilter.NotTypes)),
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accountDataEventFilter.Limit,
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@ -117,10 +117,10 @@ func (s *inviteEventsStatements) DeleteInviteEvent(
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// selectInviteEventsInRange returns a map of room ID to invite event for the
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// active invites for the target user ID in the supplied range.
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func (s *inviteEventsStatements) SelectInviteEventsInRange(
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ctx context.Context, txn *sql.Tx, targetUserID string, startPos, endPos types.StreamPosition,
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ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range,
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) (map[string]gomatrixserverlib.HeaderedEvent, error) {
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stmt := common.TxStmt(txn, s.selectInviteEventsInRangeStmt)
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rows, err := stmt.QueryContext(ctx, targetUserID, startPos, endPos)
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rows, err := stmt.QueryContext(ctx, targetUserID, r.Low(), r.High())
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if err != nil {
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return nil, err
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}
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@ -155,13 +155,13 @@ func NewPostgresEventsTable(db *sql.DB) (tables.Events, error) {
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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) SelectStateInRange(
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ctx context.Context, txn *sql.Tx, oldPos, newPos types.StreamPosition,
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ctx context.Context, txn *sql.Tx, r types.Range,
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stateFilter *gomatrixserverlib.StateFilter,
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) (map[string]map[string]bool, map[string]types.StreamEvent, error) {
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stmt := common.TxStmt(txn, s.selectStateInRangeStmt)
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rows, err := stmt.QueryContext(
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ctx, oldPos, newPos,
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ctx, r.Low(), r.High(),
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pq.StringArray(stateFilter.Senders),
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pq.StringArray(stateFilter.NotSenders),
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pq.StringArray(filterConvertTypeWildcardToSQL(stateFilter.Types)),
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@ -198,8 +198,8 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
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// since it'll just mark the event as not being needed.
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if len(addIDs) < len(delIDs) {
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log.WithFields(log.Fields{
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"since": oldPos,
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"current": newPos,
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"since": r.From,
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"current": r.To,
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"adds": addIDs,
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"dels": delIDs,
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}).Warn("StateBetween: ignoring deleted state")
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@ -298,7 +298,7 @@ func (s *outputRoomEventsStatements) InsertEvent(
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// from sync.
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func (s *outputRoomEventsStatements) SelectRecentEvents(
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ctx context.Context, txn *sql.Tx,
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roomID string, fromPos, toPos types.StreamPosition, limit int,
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roomID string, r types.Range, limit int,
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chronologicalOrder bool, onlySyncEvents bool,
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) ([]types.StreamEvent, error) {
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var stmt *sql.Stmt
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@ -307,7 +307,7 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
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} else {
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stmt = common.TxStmt(txn, s.selectRecentEventsStmt)
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}
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rows, err := stmt.QueryContext(ctx, roomID, fromPos, toPos, limit)
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rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit)
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if err != nil {
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return nil, err
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}
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@ -331,10 +331,10 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
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// from a given position, up to a maximum of 'limit'.
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func (s *outputRoomEventsStatements) SelectEarlyEvents(
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ctx context.Context, txn *sql.Tx,
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roomID string, fromPos, toPos types.StreamPosition, limit int,
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roomID string, r types.Range, limit int,
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) ([]types.StreamEvent, error) {
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stmt := common.TxStmt(txn, s.selectEarlyEventsStmt)
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rows, err := stmt.QueryContext(ctx, roomID, fromPos, toPos, limit)
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rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit)
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if err != nil {
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return nil, err
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}
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@ -54,17 +54,22 @@ func (d *Database) GetEventsInStreamingRange(
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roomID string, limit int,
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backwardOrdering bool,
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) (events []types.StreamEvent, err error) {
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r := types.Range{
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From: from.PDUPosition(),
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To: to.PDUPosition(),
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Backwards: backwardOrdering,
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}
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if backwardOrdering {
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// When using backward ordering, we want the most recent events first.
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if events, err = d.OutputEvents.SelectRecentEvents(
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ctx, nil, roomID, to.PDUPosition(), from.PDUPosition(), limit, false, false,
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ctx, nil, roomID, r, limit, false, false,
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); err != nil {
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return
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}
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} else {
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// When using forward ordering, we want the least recent events first.
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if events, err = d.OutputEvents.SelectEarlyEvents(
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ctx, nil, roomID, from.PDUPosition(), to.PDUPosition(), limit,
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ctx, nil, roomID, r, limit,
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); err != nil {
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return
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}
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@ -167,10 +172,10 @@ func (d *Database) RetireInviteEvent(
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// If no data is retrieved, returns an empty map
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// If there was an issue with the retrieval, returns an error
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func (d *Database) GetAccountDataInRange(
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ctx context.Context, userID string, oldPos, newPos types.StreamPosition,
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ctx context.Context, userID string, r types.Range,
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accountDataFilterPart *gomatrixserverlib.EventFilter,
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) (map[string][]string, error) {
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return d.AccountData.SelectAccountDataInRange(ctx, userID, oldPos, newPos, accountDataFilterPart)
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return d.AccountData.SelectAccountDataInRange(ctx, userID, r, accountDataFilterPart)
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}
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// UpsertAccountData keeps track of new or updated account data, by saving the type
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@ -417,7 +422,7 @@ func (d *Database) syncPositionTx(
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func (d *Database) addPDUDeltaToResponse(
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ctx context.Context,
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device authtypes.Device,
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fromPos, toPos types.StreamPosition,
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r types.Range,
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numRecentEventsPerRoom int,
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wantFullState bool,
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res *types.Response,
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@ -443,11 +448,11 @@ func (d *Database) addPDUDeltaToResponse(
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var deltas []stateDelta
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if !wantFullState {
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deltas, joinedRoomIDs, err = d.getStateDeltas(
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ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilter,
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ctx, &device, txn, r, device.UserID, &stateFilter,
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)
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} else {
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deltas, joinedRoomIDs, err = d.getStateDeltasForFullStateSync(
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ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilter,
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ctx, &device, txn, r, device.UserID, &stateFilter,
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)
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}
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if err != nil {
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@ -455,14 +460,14 @@ func (d *Database) addPDUDeltaToResponse(
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}
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for _, delta := range deltas {
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err = d.addRoomDeltaToResponse(ctx, &device, txn, fromPos, toPos, delta, numRecentEventsPerRoom, res)
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err = d.addRoomDeltaToResponse(ctx, &device, txn, r, delta, numRecentEventsPerRoom, res)
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if err != nil {
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return nil, err
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}
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}
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// TODO: This should be done in getStateDeltas
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if err = d.addInvitesToResponse(ctx, txn, device.UserID, fromPos, toPos, res); err != nil {
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if err = d.addInvitesToResponse(ctx, txn, device.UserID, r, res); err != nil {
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return nil, err
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}
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@ -534,8 +539,12 @@ func (d *Database) IncrementalSync(
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var joinedRoomIDs []string
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var err error
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if fromPos.PDUPosition() != toPos.PDUPosition() || wantFullState {
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r := types.Range{
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From: fromPos.PDUPosition(),
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To: toPos.PDUPosition(),
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}
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joinedRoomIDs, err = d.addPDUDeltaToResponse(
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ctx, device, fromPos.PDUPosition(), toPos.PDUPosition(), numRecentEventsPerRoom, wantFullState, res,
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ctx, device, r, numRecentEventsPerRoom, wantFullState, res,
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)
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} else {
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joinedRoomIDs, err = d.CurrentRoomState.SelectRoomIDsWithMembership(
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@ -589,6 +598,10 @@ func (d *Database) getResponseWithPDUsForCompleteSync(
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if err != nil {
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return
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}
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r := types.Range{
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From: 0,
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To: toPos.PDUPosition(),
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}
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res = types.NewResponse(toPos)
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@ -611,8 +624,7 @@ func (d *Database) getResponseWithPDUsForCompleteSync(
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// See: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L316
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var recentStreamEvents []types.StreamEvent
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recentStreamEvents, err = d.OutputEvents.SelectRecentEvents(
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ctx, txn, roomID, types.StreamPosition(0), toPos.PDUPosition(),
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numRecentEventsPerRoom, true, true,
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ctx, txn, roomID, r, numRecentEventsPerRoom, true, true,
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)
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if err != nil {
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return
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@ -644,7 +656,7 @@ func (d *Database) getResponseWithPDUsForCompleteSync(
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res.Rooms.Join[roomID] = *jr
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}
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if err = d.addInvitesToResponse(ctx, txn, userID, 0, toPos.PDUPosition(), res); err != nil {
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if err = d.addInvitesToResponse(ctx, txn, userID, r, res); err != nil {
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return
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}
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@ -686,11 +698,11 @@ var txReadOnlySnapshot = sql.TxOptions{
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func (d *Database) addInvitesToResponse(
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ctx context.Context, txn *sql.Tx,
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userID string,
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fromPos, toPos types.StreamPosition,
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r types.Range,
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res *types.Response,
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) error {
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invites, err := d.Invites.SelectInviteEventsInRange(
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ctx, txn, userID, fromPos, toPos,
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ctx, txn, userID, r,
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)
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if err != nil {
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return err
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@ -726,12 +738,11 @@ func (d *Database) addRoomDeltaToResponse(
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ctx context.Context,
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device *authtypes.Device,
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txn *sql.Tx,
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fromPos, toPos types.StreamPosition,
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r types.Range,
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delta stateDelta,
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numRecentEventsPerRoom int,
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res *types.Response,
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) error {
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endPos := toPos
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if delta.membershipPos > 0 && delta.membership == gomatrixserverlib.Leave {
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// make sure we don't leak recent events after the leave event.
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// TODO: History visibility makes this somewhat complex to handle correctly. For example:
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@ -739,10 +750,10 @@ func (d *Database) addRoomDeltaToResponse(
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// TODO: This will fail on join -> leave -> sensitive msg -> join -> leave
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// in a single /sync request
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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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r.To = delta.membershipPos
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}
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recentStreamEvents, err := d.OutputEvents.SelectRecentEvents(
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ctx, txn, delta.roomID, types.StreamPosition(fromPos), types.StreamPosition(endPos),
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ctx, txn, delta.roomID, r,
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numRecentEventsPerRoom, true, true,
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)
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if err != nil {
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@ -872,7 +883,7 @@ func (d *Database) fetchMissingStateEvents(
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// A list of joined room IDs is also returned in case the caller needs it.
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func (d *Database) getStateDeltas(
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ctx context.Context, device *authtypes.Device, txn *sql.Tx,
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fromPos, toPos types.StreamPosition, userID string,
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r types.Range, userID string,
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stateFilter *gomatrixserverlib.StateFilter,
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) ([]stateDelta, []string, error) {
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// Implement membership change algorithm: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L821
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@ -886,7 +897,7 @@ func (d *Database) getStateDeltas(
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var deltas []stateDelta
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// get all the state events ever between these two positions
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stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, fromPos, toPos, stateFilter)
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stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, r, stateFilter)
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if err != nil {
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return nil, nil, err
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}
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@ -947,7 +958,7 @@ func (d *Database) getStateDeltas(
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// updates for other rooms.
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func (d *Database) getStateDeltasForFullStateSync(
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ctx context.Context, device *authtypes.Device, txn *sql.Tx,
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fromPos, toPos types.StreamPosition, userID string,
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r types.Range, userID string,
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stateFilter *gomatrixserverlib.StateFilter,
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) ([]stateDelta, []string, error) {
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joinedRoomIDs, err := d.CurrentRoomState.SelectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
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@ -972,7 +983,7 @@ func (d *Database) getStateDeltasForFullStateSync(
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}
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// Get all the state events ever between these two positions
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stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, fromPos, toPos, stateFilter)
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stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, r, stateFilter)
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if err != nil {
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return nil, nil, err
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}
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@ -91,19 +91,12 @@ func (s *accountDataStatements) InsertAccountData(
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func (s *accountDataStatements) SelectAccountDataInRange(
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ctx context.Context,
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userID string,
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oldPos, newPos types.StreamPosition,
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r types.Range,
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accountDataFilterPart *gomatrixserverlib.EventFilter,
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) (data map[string][]string, err error) {
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data = make(map[string][]string)
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// If both positions are the same, it means that the data was saved after the
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// latest room event. In that case, we need to decrement the old position as
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// it would prevent the SQL request from returning anything.
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if oldPos == newPos {
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oldPos--
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}
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rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, oldPos, newPos)
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rows, err := s.selectAccountDataInRangeStmt.QueryContext(ctx, userID, r.Low(), r.High())
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if err != nil {
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return
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}
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@ -121,10 +121,10 @@ func (s *inviteEventsStatements) DeleteInviteEvent(
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// selectInviteEventsInRange returns a map of room ID to invite event for the
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// active invites for the target user ID in the supplied range.
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func (s *inviteEventsStatements) SelectInviteEventsInRange(
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ctx context.Context, txn *sql.Tx, targetUserID string, startPos, endPos types.StreamPosition,
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ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range,
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) (map[string]gomatrixserverlib.HeaderedEvent, error) {
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stmt := common.TxStmt(txn, s.selectInviteEventsInRangeStmt)
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rows, err := stmt.QueryContext(ctx, targetUserID, startPos, endPos)
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rows, err := stmt.QueryContext(ctx, targetUserID, r.Low(), r.High())
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if err != nil {
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return nil, err
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}
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@ -146,13 +146,13 @@ func NewSqliteEventsTable(db *sql.DB, streamID *streamIDStatements) (tables.Even
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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) SelectStateInRange(
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ctx context.Context, txn *sql.Tx, oldPos, newPos types.StreamPosition,
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ctx context.Context, txn *sql.Tx, r types.Range,
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stateFilterPart *gomatrixserverlib.StateFilter,
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) (map[string]map[string]bool, map[string]types.StreamEvent, error) {
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stmt := common.TxStmt(txn, s.selectStateInRangeStmt)
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rows, err := stmt.QueryContext(
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ctx, oldPos, newPos,
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ctx, r.Low(), r.High(),
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/*pq.StringArray(stateFilterPart.Senders),
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pq.StringArray(stateFilterPart.NotSenders),
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pq.StringArray(filterConvertTypeWildcardToSQL(stateFilterPart.Types)),
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@ -195,8 +195,8 @@ func (s *outputRoomEventsStatements) SelectStateInRange(
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// since it'll just mark the event as not being needed.
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if len(addIDs) < len(delIDs) {
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log.WithFields(log.Fields{
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"since": oldPos,
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"current": newPos,
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"since": r.From,
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"current": r.To,
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"adds": addIDsJSON,
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"dels": delIDsJSON,
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}).Warn("StateBetween: ignoring deleted state")
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@ -308,7 +308,7 @@ func (s *outputRoomEventsStatements) InsertEvent(
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func (s *outputRoomEventsStatements) SelectRecentEvents(
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ctx context.Context, txn *sql.Tx,
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roomID string, fromPos, toPos types.StreamPosition, limit int,
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roomID string, r types.Range, limit int,
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chronologicalOrder bool, onlySyncEvents bool,
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) ([]types.StreamEvent, error) {
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var stmt *sql.Stmt
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@ -318,7 +318,7 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
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stmt = common.TxStmt(txn, s.selectRecentEventsStmt)
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}
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rows, err := stmt.QueryContext(ctx, roomID, fromPos, toPos, limit)
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rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit)
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if err != nil {
|
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return nil, err
|
||||
}
|
||||
@ -340,10 +340,10 @@ func (s *outputRoomEventsStatements) SelectRecentEvents(
|
||||
|
||||
func (s *outputRoomEventsStatements) SelectEarlyEvents(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
roomID string, fromPos, toPos types.StreamPosition, limit int,
|
||||
roomID string, r types.Range, limit int,
|
||||
) ([]types.StreamEvent, error) {
|
||||
stmt := common.TxStmt(txn, s.selectEarlyEventsStmt)
|
||||
rows, err := stmt.QueryContext(ctx, roomID, fromPos, toPos, limit)
|
||||
rows, err := stmt.QueryContext(ctx, roomID, r.Low(), r.High(), limit)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
@ -11,29 +11,29 @@ import (
|
||||
|
||||
type AccountData interface {
|
||||
InsertAccountData(ctx context.Context, txn *sql.Tx, userID, roomID, dataType string) (pos types.StreamPosition, err error)
|
||||
// SelectAccountDataInRange returns a map of room ID to a list of `dataType`. The range is exclusive of `lowPos` and inclusive of `hiPos`.
|
||||
SelectAccountDataInRange(ctx context.Context, userID string, lowPos, hiPos types.StreamPosition, accountDataEventFilter *gomatrixserverlib.EventFilter) (data map[string][]string, err error)
|
||||
// SelectAccountDataInRange returns a map of room ID to a list of `dataType`.
|
||||
SelectAccountDataInRange(ctx context.Context, userID string, r types.Range, accountDataEventFilter *gomatrixserverlib.EventFilter) (data map[string][]string, err error)
|
||||
SelectMaxAccountDataID(ctx context.Context, txn *sql.Tx) (id int64, err error)
|
||||
}
|
||||
|
||||
type Invites interface {
|
||||
InsertInviteEvent(ctx context.Context, txn *sql.Tx, inviteEvent gomatrixserverlib.HeaderedEvent) (streamPos types.StreamPosition, err error)
|
||||
DeleteInviteEvent(ctx context.Context, inviteEventID string) error
|
||||
// SelectInviteEventsInRange returns a map of room ID to invite events. The range is exclusive of `startPos` and inclusive of `endPos`.
|
||||
SelectInviteEventsInRange(ctx context.Context, txn *sql.Tx, targetUserID string, startPos, endPos types.StreamPosition) (map[string]gomatrixserverlib.HeaderedEvent, error)
|
||||
// SelectInviteEventsInRange returns a map of room ID to invite events.
|
||||
SelectInviteEventsInRange(ctx context.Context, txn *sql.Tx, targetUserID string, r types.Range) (map[string]gomatrixserverlib.HeaderedEvent, error)
|
||||
SelectMaxInviteID(ctx context.Context, txn *sql.Tx) (id int64, err error)
|
||||
}
|
||||
|
||||
type Events interface {
|
||||
SelectStateInRange(ctx context.Context, txn *sql.Tx, oldPos, newPos types.StreamPosition, stateFilter *gomatrixserverlib.StateFilter) (map[string]map[string]bool, map[string]types.StreamEvent, error)
|
||||
SelectStateInRange(ctx context.Context, txn *sql.Tx, r types.Range, stateFilter *gomatrixserverlib.StateFilter) (map[string]map[string]bool, map[string]types.StreamEvent, error)
|
||||
SelectMaxEventID(ctx context.Context, txn *sql.Tx) (id int64, err error)
|
||||
InsertEvent(ctx context.Context, txn *sql.Tx, event *gomatrixserverlib.HeaderedEvent, addState, removeState []string, transactionID *api.TransactionID, excludeFromSync bool) (streamPos types.StreamPosition, err error)
|
||||
// SelectRecentEvents returns events between the two stream positions: exclusive of `fromPos` and inclusive of `toPos`.
|
||||
// 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.
|
||||
SelectRecentEvents(ctx context.Context, txn *sql.Tx, roomID string, fromPos, toPos types.StreamPosition, limit int, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, error)
|
||||
// SelectEarlyEvents returns the earliest events in the given room, exclusive of `fromPos` and inclusive of `toPos`.
|
||||
SelectEarlyEvents(ctx context.Context, txn *sql.Tx, roomID string, fromPos, toPos types.StreamPosition, limit int) ([]types.StreamEvent, error)
|
||||
SelectRecentEvents(ctx context.Context, txn *sql.Tx, roomID string, r types.Range, limit int, chronologicalOrder bool, onlySyncEvents bool) ([]types.StreamEvent, 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)
|
||||
SelectEvents(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]types.StreamEvent, error)
|
||||
}
|
||||
|
||||
|
@ -184,11 +184,20 @@ func (rp *RequestPool) appendAccountData(
|
||||
return data, nil
|
||||
}
|
||||
|
||||
r := types.Range{
|
||||
From: req.since.PDUPosition(),
|
||||
To: currentPos,
|
||||
}
|
||||
// If both positions are the same, it means that the data was saved after the
|
||||
// latest room event. In that case, we need to decrement the old position as
|
||||
// results are exclusive of Low.
|
||||
if r.Low() == r.High() {
|
||||
r.From--
|
||||
}
|
||||
|
||||
// Sync is not initial, get all account data since the latest sync
|
||||
dataTypes, err := rp.db.GetAccountDataInRange(
|
||||
req.ctx, userID,
|
||||
types.StreamPosition(req.since.PDUPosition()), types.StreamPosition(currentPos),
|
||||
accountDataFilter,
|
||||
req.ctx, userID, r, accountDataFilter,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
|
@ -47,6 +47,34 @@ type StreamEvent struct {
|
||||
ExcludeFromSync bool
|
||||
}
|
||||
|
||||
// Range represents a range between two stream positions.
|
||||
type Range struct {
|
||||
// From is the position the client has already received.
|
||||
From StreamPosition
|
||||
// To is the position the client is going towards.
|
||||
To StreamPosition
|
||||
// True if the client is going backwards
|
||||
Backwards bool
|
||||
}
|
||||
|
||||
// Low returns the low number of the range.
|
||||
// This represents the position the client already has and hence is exclusive.
|
||||
func (r *Range) Low() StreamPosition {
|
||||
if !r.Backwards {
|
||||
return r.From
|
||||
}
|
||||
return r.To
|
||||
}
|
||||
|
||||
// High returns the high number of the range
|
||||
// This represents the position the client is going towards and hence is inclusive.
|
||||
func (r *Range) High() StreamPosition {
|
||||
if !r.Backwards {
|
||||
return r.To
|
||||
}
|
||||
return r.From
|
||||
}
|
||||
|
||||
// SyncTokenType represents the type of a sync token.
|
||||
// It can be either "s" (representing a position in the whole stream of events)
|
||||
// or "t" (representing a position in a room's topology/depth).
|
||||
|
Loading…
Reference in New Issue
Block a user