mirror of
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Finish merging syncserver.go (#1033)
* Refactor all postgres tables; start work on sqlite * wip sqlite merges; database is locked errors to investigate and failing tests * Revert "wip sqlite merges; database is locked errors to investigate and failing tests" This reverts commit 26cbfc5b75ae2dc4fb31a838b917aa39d758f162. * convert current room state table * port over sqlite topology table * remove a few functions * remove more functions * Share more code * factor out completesync and a bit more * Remove remaining code
This commit is contained in:
Kegsay
GitHub
parent
640a0265df
commit
1b34130a5b
106
syncapi/storage/postgres/backwards_extremities_table.go
Normal file
106
syncapi/storage/postgres/backwards_extremities_table.go
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@ -0,0 +1,106 @@
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// Copyright 2018 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package postgres
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import (
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"context"
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"database/sql"
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"github.com/matrix-org/dendrite/common"
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"github.com/matrix-org/dendrite/syncapi/storage/tables"
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)
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const backwardExtremitiesSchema = `
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-- Stores output room events received from the roomserver.
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CREATE TABLE IF NOT EXISTS syncapi_backward_extremities (
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-- The 'room_id' key for the event.
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room_id TEXT NOT NULL,
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-- The event ID for the last known event. This is the backwards extremity.
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event_id TEXT NOT NULL,
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-- The prev_events for the last known event. This is used to update extremities.
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prev_event_id TEXT NOT NULL,
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PRIMARY KEY(room_id, event_id, prev_event_id)
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);
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`
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const insertBackwardExtremitySQL = "" +
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"INSERT INTO syncapi_backward_extremities (room_id, event_id, prev_event_id)" +
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" VALUES ($1, $2, $3)" +
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" ON CONFLICT DO NOTHING"
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const selectBackwardExtremitiesForRoomSQL = "" +
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"SELECT DISTINCT event_id FROM syncapi_backward_extremities WHERE room_id = $1"
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const deleteBackwardExtremitySQL = "" +
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"DELETE FROM syncapi_backward_extremities WHERE room_id = $1 AND prev_event_id = $2"
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type backwardExtremitiesStatements struct {
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insertBackwardExtremityStmt *sql.Stmt
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selectBackwardExtremitiesForRoomStmt *sql.Stmt
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deleteBackwardExtremityStmt *sql.Stmt
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}
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func NewPostgresBackwardsExtremitiesTable(db *sql.DB) (tables.BackwardsExtremities, error) {
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s := &backwardExtremitiesStatements{}
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_, err := db.Exec(backwardExtremitiesSchema)
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if err != nil {
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return nil, err
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}
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if s.insertBackwardExtremityStmt, err = db.Prepare(insertBackwardExtremitySQL); err != nil {
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return nil, err
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}
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if s.selectBackwardExtremitiesForRoomStmt, err = db.Prepare(selectBackwardExtremitiesForRoomSQL); err != nil {
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return nil, err
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}
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if s.deleteBackwardExtremityStmt, err = db.Prepare(deleteBackwardExtremitySQL); err != nil {
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return nil, err
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}
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return s, nil
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}
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func (s *backwardExtremitiesStatements) InsertsBackwardExtremity(
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ctx context.Context, txn *sql.Tx, roomID, eventID string, prevEventID string,
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) (err error) {
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_, err = txn.Stmt(s.insertBackwardExtremityStmt).ExecContext(ctx, roomID, eventID, prevEventID)
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return
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}
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func (s *backwardExtremitiesStatements) SelectBackwardExtremitiesForRoom(
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ctx context.Context, roomID string,
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) (eventIDs []string, err error) {
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rows, err := s.selectBackwardExtremitiesForRoomStmt.QueryContext(ctx, roomID)
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if err != nil {
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return
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}
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defer common.CloseAndLogIfError(ctx, rows, "selectBackwardExtremitiesForRoom: rows.close() failed")
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for rows.Next() {
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var eID string
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if err = rows.Scan(&eID); err != nil {
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return
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}
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eventIDs = append(eventIDs, eID)
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}
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return eventIDs, rows.Err()
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}
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func (s *backwardExtremitiesStatements) DeleteBackwardExtremity(
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ctx context.Context, txn *sql.Tx, roomID, knownEventID string,
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) (err error) {
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_, err = txn.Stmt(s.deleteBackwardExtremityStmt).ExecContext(ctx, roomID, knownEventID)
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return
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}
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@ -22,6 +22,7 @@ import (
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"github.com/lib/pq"
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"github.com/matrix-org/dendrite/common"
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"github.com/matrix-org/dendrite/syncapi/storage/tables"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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)
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@ -103,37 +104,38 @@ type currentRoomStateStatements struct {
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selectStateEventStmt *sql.Stmt
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}
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func (s *currentRoomStateStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(currentRoomStateSchema)
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func NewPostgresCurrentRoomStateTable(db *sql.DB) (tables.CurrentRoomState, error) {
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s := ¤tRoomStateStatements{}
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_, err := db.Exec(currentRoomStateSchema)
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if err != nil {
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return
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return nil, err
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}
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if s.upsertRoomStateStmt, err = db.Prepare(upsertRoomStateSQL); err != nil {
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return
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return nil, err
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}
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if s.deleteRoomStateByEventIDStmt, err = db.Prepare(deleteRoomStateByEventIDSQL); err != nil {
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return
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return nil, err
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}
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if s.selectRoomIDsWithMembershipStmt, err = db.Prepare(selectRoomIDsWithMembershipSQL); err != nil {
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return
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return nil, err
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}
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if s.selectCurrentStateStmt, err = db.Prepare(selectCurrentStateSQL); err != nil {
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return
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return nil, err
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}
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if s.selectJoinedUsersStmt, err = db.Prepare(selectJoinedUsersSQL); err != nil {
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return
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return nil, err
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}
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if s.selectEventsWithEventIDsStmt, err = db.Prepare(selectEventsWithEventIDsSQL); err != nil {
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return
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return nil, err
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}
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if s.selectStateEventStmt, err = db.Prepare(selectStateEventSQL); err != nil {
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return
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return nil, err
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}
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return
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return s, nil
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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) selectJoinedUsers(
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// SelectJoinedUsers returns a map of room ID to a list of joined user IDs.
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func (s *currentRoomStateStatements) SelectJoinedUsers(
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ctx context.Context,
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) (map[string][]string, error) {
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rows, err := s.selectJoinedUsersStmt.QueryContext(ctx)
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@ -157,7 +159,7 @@ func (s *currentRoomStateStatements) selectJoinedUsers(
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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(
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func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(
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ctx context.Context,
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txn *sql.Tx,
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userID string,
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@ -181,8 +183,8 @@ func (s *currentRoomStateStatements) selectRoomIDsWithMembership(
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return result, rows.Err()
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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) selectCurrentState(
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// SelectCurrentState returns all the current state events for the given room.
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func (s *currentRoomStateStatements) SelectCurrentState(
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ctx context.Context, txn *sql.Tx, roomID string,
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stateFilter *gomatrixserverlib.StateFilter,
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) ([]gomatrixserverlib.HeaderedEvent, error) {
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@ -203,7 +205,7 @@ func (s *currentRoomStateStatements) selectCurrentState(
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return rowsToEvents(rows)
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}
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func (s *currentRoomStateStatements) deleteRoomStateByEventID(
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func (s *currentRoomStateStatements) DeleteRoomStateByEventID(
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ctx context.Context, txn *sql.Tx, eventID string,
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) error {
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stmt := common.TxStmt(txn, s.deleteRoomStateByEventIDStmt)
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@ -211,7 +213,7 @@ func (s *currentRoomStateStatements) deleteRoomStateByEventID(
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return err
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}
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func (s *currentRoomStateStatements) upsertRoomState(
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func (s *currentRoomStateStatements) UpsertRoomState(
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ctx context.Context, txn *sql.Tx,
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event gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition,
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) error {
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@ -245,7 +247,7 @@ func (s *currentRoomStateStatements) upsertRoomState(
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return err
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}
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func (s *currentRoomStateStatements) selectEventsWithEventIDs(
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func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
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ctx context.Context, txn *sql.Tx, eventIDs []string,
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) ([]types.StreamEvent, error) {
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stmt := common.TxStmt(txn, s.selectEventsWithEventIDsStmt)
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@ -274,7 +276,7 @@ func rowsToEvents(rows *sql.Rows) ([]gomatrixserverlib.HeaderedEvent, error) {
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return result, rows.Err()
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}
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func (s *currentRoomStateStatements) selectStateEvent(
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func (s *currentRoomStateStatements) SelectStateEvent(
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ctx context.Context, roomID, evType, stateKey string,
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) (*gomatrixserverlib.HeaderedEvent, error) {
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stmt := s.selectStateEventStmt
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@ -20,6 +20,7 @@ import (
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"github.com/matrix-org/dendrite/common"
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"github.com/matrix-org/dendrite/syncapi/storage/tables"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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)
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@ -84,36 +85,37 @@ type outputRoomEventsTopologyStatements struct {
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selectEventIDsFromPositionStmt *sql.Stmt
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}
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func (s *outputRoomEventsTopologyStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(outputRoomEventsTopologySchema)
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func NewPostgresTopologyTable(db *sql.DB) (tables.Topology, error) {
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s := &outputRoomEventsTopologyStatements{}
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_, err := db.Exec(outputRoomEventsTopologySchema)
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if err != nil {
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return
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return nil, err
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}
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if s.insertEventInTopologyStmt, err = db.Prepare(insertEventInTopologySQL); err != nil {
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return
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return nil, err
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}
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if s.selectEventIDsInRangeASCStmt, err = db.Prepare(selectEventIDsInRangeASCSQL); err != nil {
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return
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return nil, err
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}
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if s.selectEventIDsInRangeDESCStmt, err = db.Prepare(selectEventIDsInRangeDESCSQL); err != nil {
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return
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return nil, err
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}
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if s.selectPositionInTopologyStmt, err = db.Prepare(selectPositionInTopologySQL); err != nil {
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return
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return nil, err
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}
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if s.selectMaxPositionInTopologyStmt, err = db.Prepare(selectMaxPositionInTopologySQL); err != nil {
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return
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return nil, err
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}
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if s.selectEventIDsFromPositionStmt, err = db.Prepare(selectEventIDsFromPositionSQL); err != nil {
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return
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return nil, err
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}
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return
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return s, nil
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}
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// insertEventInTopology inserts the given event in the room's topology, based
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// InsertEventInTopology inserts the given event in the room's topology, based
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// on the event's depth.
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func (s *outputRoomEventsTopologyStatements) insertEventInTopology(
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ctx context.Context, event *gomatrixserverlib.HeaderedEvent, pos types.StreamPosition,
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func (s *outputRoomEventsTopologyStatements) InsertEventInTopology(
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ctx context.Context, txn *sql.Tx, event *gomatrixserverlib.HeaderedEvent, pos types.StreamPosition,
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) (err error) {
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_, err = s.insertEventInTopologyStmt.ExecContext(
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ctx, event.EventID(), event.Depth(), event.RoomID(), pos,
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@ -121,11 +123,11 @@ func (s *outputRoomEventsTopologyStatements) insertEventInTopology(
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return
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}
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// selectEventIDsInRange selects the IDs of events which positions are within a
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// SelectEventIDsInRange selects the IDs of events which positions are within a
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// given range in a given room's topological order.
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// Returns an empty slice if no events match the given range.
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func (s *outputRoomEventsTopologyStatements) selectEventIDsInRange(
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ctx context.Context, roomID string, fromPos, toPos, toMicroPos types.StreamPosition,
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func (s *outputRoomEventsTopologyStatements) SelectEventIDsInRange(
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ctx context.Context, txn *sql.Tx, roomID string, fromPos, toPos, toMicroPos types.StreamPosition,
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limit int, chronologicalOrder bool,
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) (eventIDs []string, err error) {
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// Decide on the selection's order according to whether chronological order
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@ -159,26 +161,26 @@ func (s *outputRoomEventsTopologyStatements) selectEventIDsInRange(
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return eventIDs, rows.Err()
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}
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// selectPositionInTopology returns the position of a given event in the
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// SelectPositionInTopology returns the position of a given event in the
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// topology of the room it belongs to.
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func (s *outputRoomEventsTopologyStatements) selectPositionInTopology(
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ctx context.Context, eventID string,
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func (s *outputRoomEventsTopologyStatements) SelectPositionInTopology(
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ctx context.Context, txn *sql.Tx, eventID string,
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) (pos, spos types.StreamPosition, err error) {
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err = s.selectPositionInTopologyStmt.QueryRowContext(ctx, eventID).Scan(&pos, &spos)
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return
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}
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func (s *outputRoomEventsTopologyStatements) selectMaxPositionInTopology(
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ctx context.Context, roomID string,
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func (s *outputRoomEventsTopologyStatements) SelectMaxPositionInTopology(
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ctx context.Context, txn *sql.Tx, roomID string,
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) (pos types.StreamPosition, spos types.StreamPosition, err error) {
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err = s.selectMaxPositionInTopologyStmt.QueryRowContext(ctx, roomID).Scan(&pos, &spos)
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return
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}
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// selectEventIDsFromPosition returns the IDs of all events that have a given
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// SelectEventIDsFromPosition returns the IDs of all events that have a given
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// position in the topology of a given room.
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func (s *outputRoomEventsTopologyStatements) selectEventIDsFromPosition(
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ctx context.Context, roomID string, pos types.StreamPosition,
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func (s *outputRoomEventsTopologyStatements) SelectEventIDsFromPosition(
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ctx context.Context, txn *sql.Tx, roomID string, pos types.StreamPosition,
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) (eventIDs []string, err error) {
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// Query the event IDs.
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rows, err := s.selectEventIDsFromPositionStmt.QueryContext(ctx, roomID, pos)
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@ -16,47 +16,27 @@
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package postgres
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import (
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"context"
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"database/sql"
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"encoding/json"
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"fmt"
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"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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"github.com/matrix-org/dendrite/roomserver/api"
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// Import the postgres database driver.
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_ "github.com/lib/pq"
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"github.com/matrix-org/dendrite/common"
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"github.com/matrix-org/dendrite/eduserver/cache"
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"github.com/matrix-org/dendrite/syncapi/storage/shared"
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"github.com/matrix-org/dendrite/syncapi/storage/tables"
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"github.com/matrix-org/dendrite/syncapi/types"
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"github.com/matrix-org/gomatrixserverlib"
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)
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type stateDelta struct {
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roomID string
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stateEvents []gomatrixserverlib.HeaderedEvent
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membership string
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// The PDU stream position of the latest membership event for this user, if applicable.
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// Can be 0 if there is no membership event in this delta.
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membershipPos types.StreamPosition
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}
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// SyncServerDatasource represents a sync server datasource which manages
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// both the database for PDUs and caches for EDUs.
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type SyncServerDatasource struct {
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shared.Database
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db *sql.DB
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common.PartitionOffsetStatements
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roomstate currentRoomStateStatements
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topology outputRoomEventsTopologyStatements
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backwardExtremities tables.BackwardsExtremities
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}
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// NewSyncServerDatasource creates a new sync server database
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func NewSyncServerDatasource(dbDataSourceName string, dbProperties common.DbProperties) (*SyncServerDatasource, error) {
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// NewDatabase creates a new sync server database
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func NewDatabase(dbDataSourceName string, dbProperties common.DbProperties) (*SyncServerDatasource, error) {
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var d SyncServerDatasource
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var err error
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if d.db, err = sqlutil.Open("postgres", dbDataSourceName, dbProperties); err != nil {
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@ -73,884 +53,31 @@ func NewSyncServerDatasource(dbDataSourceName string, dbProperties common.DbProp
|
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if err != nil {
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return nil, err
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}
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if err = d.roomstate.prepare(d.db); err != nil {
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currState, err := NewPostgresCurrentRoomStateTable(d.db)
|
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if err != nil {
|
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return nil, err
|
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}
|
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invites, err := NewPostgresInvitesTable(d.db)
|
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if err != nil {
|
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return nil, err
|
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}
|
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if err = d.topology.prepare(d.db); err != nil {
|
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topology, err := NewPostgresTopologyTable(d.db)
|
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if err != nil {
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return nil, err
|
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}
|
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d.backwardExtremities, err = tables.NewBackwardsExtremities(d.db, &tables.PostgresBackwardsExtremitiesStatements{})
|
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backwardExtremities, err := NewPostgresBackwardsExtremitiesTable(d.db)
|
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if err != nil {
|
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return nil, err
|
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}
|
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d.Database = shared.Database{
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DB: d.db,
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Invites: invites,
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AccountData: accountData,
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OutputEvents: events,
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EDUCache: cache.New(),
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DB: d.db,
|
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Invites: invites,
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AccountData: accountData,
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OutputEvents: events,
|
||||
Topology: topology,
|
||||
CurrentRoomState: currState,
|
||||
BackwardExtremities: backwardExtremities,
|
||||
EDUCache: cache.New(),
|
||||
}
|
||||
return &d, nil
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) AllJoinedUsersInRooms(ctx context.Context) (map[string][]string, error) {
|
||||
return d.roomstate.selectJoinedUsers(ctx)
|
||||
}
|
||||
|
||||
// handleBackwardExtremities adds this event as a backwards extremity if and only if we do not have all of
|
||||
// the events listed in the event's 'prev_events'. This function also updates the backwards extremities table
|
||||
// to account for the fact that the given event is no longer a backwards extremity, but may be marked as such.
|
||||
func (d *SyncServerDatasource) handleBackwardExtremities(ctx context.Context, txn *sql.Tx, ev *gomatrixserverlib.HeaderedEvent) error {
|
||||
if err := d.backwardExtremities.DeleteBackwardExtremity(ctx, txn, ev.RoomID(), ev.EventID()); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Check if we have all of the event's previous events. If an event is
|
||||
// missing, add it to the room's backward extremities.
|
||||
prevEvents, err := d.Database.OutputEvents.SelectEvents(ctx, txn, ev.PrevEventIDs())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
var found bool
|
||||
for _, eID := range ev.PrevEventIDs() {
|
||||
found = false
|
||||
for _, prevEv := range prevEvents {
|
||||
if eID == prevEv.EventID() {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
// If the event is missing, consider it a backward extremity.
|
||||
if !found {
|
||||
if err = d.backwardExtremities.InsertsBackwardExtremity(ctx, txn, ev.RoomID(), ev.EventID(), eID); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) WriteEvent(
|
||||
ctx context.Context,
|
||||
ev *gomatrixserverlib.HeaderedEvent,
|
||||
addStateEvents []gomatrixserverlib.HeaderedEvent,
|
||||
addStateEventIDs, removeStateEventIDs []string,
|
||||
transactionID *api.TransactionID, excludeFromSync bool,
|
||||
) (pduPosition types.StreamPosition, returnErr error) {
|
||||
returnErr = common.WithTransaction(d.db, func(txn *sql.Tx) error {
|
||||
var err error
|
||||
pos, err := d.Database.OutputEvents.InsertEvent(
|
||||
ctx, txn, ev, addStateEventIDs, removeStateEventIDs, transactionID, excludeFromSync,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
pduPosition = pos
|
||||
|
||||
if err = d.topology.insertEventInTopology(ctx, ev, pos); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = d.handleBackwardExtremities(ctx, txn, ev); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if len(addStateEvents) == 0 && len(removeStateEventIDs) == 0 {
|
||||
// Nothing to do, the event may have just been a message event.
|
||||
return nil
|
||||
}
|
||||
|
||||
return d.updateRoomState(ctx, txn, removeStateEventIDs, addStateEvents, pduPosition)
|
||||
})
|
||||
|
||||
return pduPosition, returnErr
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) updateRoomState(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
removedEventIDs []string,
|
||||
addedEvents []gomatrixserverlib.HeaderedEvent,
|
||||
pduPosition types.StreamPosition,
|
||||
) error {
|
||||
// remove first, then add, as we do not ever delete state, but do replace state which is a remove followed by an add.
|
||||
for _, eventID := range removedEventIDs {
|
||||
if err := d.roomstate.deleteRoomStateByEventID(ctx, txn, eventID); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
for _, event := range addedEvents {
|
||||
if event.StateKey() == nil {
|
||||
// ignore non state events
|
||||
continue
|
||||
}
|
||||
var membership *string
|
||||
if event.Type() == "m.room.member" {
|
||||
value, err := event.Membership()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
membership = &value
|
||||
}
|
||||
if err := d.roomstate.upsertRoomState(ctx, txn, event, membership, pduPosition); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) GetStateEvent(
|
||||
ctx context.Context, roomID, evType, stateKey string,
|
||||
) (*gomatrixserverlib.HeaderedEvent, error) {
|
||||
return d.roomstate.selectStateEvent(ctx, roomID, evType, stateKey)
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) GetStateEventsForRoom(
|
||||
ctx context.Context, roomID string, stateFilter *gomatrixserverlib.StateFilter,
|
||||
) (stateEvents []gomatrixserverlib.HeaderedEvent, err error) {
|
||||
err = common.WithTransaction(d.db, func(txn *sql.Tx) error {
|
||||
stateEvents, err = d.roomstate.selectCurrentState(ctx, txn, roomID, stateFilter)
|
||||
return err
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) GetEventsInTopologicalRange(
|
||||
ctx context.Context,
|
||||
from, to *types.TopologyToken,
|
||||
roomID string, limit int,
|
||||
backwardOrdering bool,
|
||||
) (events []types.StreamEvent, err error) {
|
||||
// Determine the backward and forward limit, i.e. the upper and lower
|
||||
// limits to the selection in the room's topology, from the direction.
|
||||
var backwardLimit, forwardLimit, forwardMicroLimit types.StreamPosition
|
||||
if backwardOrdering {
|
||||
// Backward ordering is antichronological (latest event to oldest
|
||||
// one).
|
||||
backwardLimit = to.Depth()
|
||||
forwardLimit = from.Depth()
|
||||
forwardMicroLimit = from.PDUPosition()
|
||||
} else {
|
||||
// Forward ordering is chronological (oldest event to latest one).
|
||||
backwardLimit = from.Depth()
|
||||
forwardLimit = to.Depth()
|
||||
}
|
||||
|
||||
// Select the event IDs from the defined range.
|
||||
var eIDs []string
|
||||
eIDs, err = d.topology.selectEventIDsInRange(
|
||||
ctx, roomID, backwardLimit, forwardLimit, forwardMicroLimit, limit, !backwardOrdering,
|
||||
)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Retrieve the events' contents using their IDs.
|
||||
events, err = d.Database.OutputEvents.SelectEvents(ctx, nil, eIDs)
|
||||
return
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) SyncPosition(ctx context.Context) (types.StreamingToken, error) {
|
||||
return d.syncPositionTx(ctx, nil)
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) BackwardExtremitiesForRoom(
|
||||
ctx context.Context, roomID string,
|
||||
) (backwardExtremities []string, err error) {
|
||||
return d.backwardExtremities.SelectBackwardExtremitiesForRoom(ctx, roomID)
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) MaxTopologicalPosition(
|
||||
ctx context.Context, roomID string,
|
||||
) (depth types.StreamPosition, stream types.StreamPosition, err error) {
|
||||
return d.topology.selectMaxPositionInTopology(ctx, roomID)
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) EventsAtTopologicalPosition(
|
||||
ctx context.Context, roomID string, pos types.StreamPosition,
|
||||
) ([]types.StreamEvent, error) {
|
||||
eIDs, err := d.topology.selectEventIDsFromPosition(ctx, roomID, pos)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return d.Database.OutputEvents.SelectEvents(ctx, nil, eIDs)
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) EventPositionInTopology(
|
||||
ctx context.Context, eventID string,
|
||||
) (depth types.StreamPosition, stream types.StreamPosition, err error) {
|
||||
return d.topology.selectPositionInTopology(ctx, eventID)
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) syncPositionTx(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
) (sp types.StreamingToken, err error) {
|
||||
|
||||
maxEventID, err := d.Database.OutputEvents.SelectMaxEventID(ctx, txn)
|
||||
if err != nil {
|
||||
return sp, err
|
||||
}
|
||||
maxAccountDataID, err := d.Database.AccountData.SelectMaxAccountDataID(ctx, txn)
|
||||
if err != nil {
|
||||
return sp, err
|
||||
}
|
||||
if maxAccountDataID > maxEventID {
|
||||
maxEventID = maxAccountDataID
|
||||
}
|
||||
maxInviteID, err := d.Database.Invites.SelectMaxInviteID(ctx, txn)
|
||||
if err != nil {
|
||||
return sp, err
|
||||
}
|
||||
if maxInviteID > maxEventID {
|
||||
maxEventID = maxInviteID
|
||||
}
|
||||
sp = types.NewStreamToken(types.StreamPosition(maxEventID), types.StreamPosition(d.Database.EDUCache.GetLatestSyncPosition()))
|
||||
return
|
||||
}
|
||||
|
||||
// addPDUDeltaToResponse adds all PDU deltas to a sync response.
|
||||
// IDs of all rooms the user joined are returned so EDU deltas can be added for them.
|
||||
func (d *SyncServerDatasource) addPDUDeltaToResponse(
|
||||
ctx context.Context,
|
||||
device authtypes.Device,
|
||||
fromPos, toPos types.StreamPosition,
|
||||
numRecentEventsPerRoom int,
|
||||
wantFullState bool,
|
||||
res *types.Response,
|
||||
) (joinedRoomIDs []string, err error) {
|
||||
txn, err := d.db.BeginTx(ctx, &txReadOnlySnapshot)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var succeeded bool
|
||||
defer func() {
|
||||
txerr := common.EndTransaction(txn, &succeeded)
|
||||
if err == nil && txerr != nil {
|
||||
err = txerr
|
||||
}
|
||||
}()
|
||||
|
||||
stateFilter := gomatrixserverlib.DefaultStateFilter() // TODO: use filter provided in request
|
||||
|
||||
// Work out which rooms to return in the response. This is done by getting not only the currently
|
||||
// joined rooms, but also which rooms have membership transitions for this user between the 2 PDU stream positions.
|
||||
// This works out what the 'state' key should be for each room as well as which membership block
|
||||
// to put the room into.
|
||||
var deltas []stateDelta
|
||||
if !wantFullState {
|
||||
deltas, joinedRoomIDs, err = d.getStateDeltas(
|
||||
ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilter,
|
||||
)
|
||||
} else {
|
||||
deltas, joinedRoomIDs, err = d.getStateDeltasForFullStateSync(
|
||||
ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilter,
|
||||
)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for _, delta := range deltas {
|
||||
err = d.addRoomDeltaToResponse(ctx, &device, txn, fromPos, toPos, delta, numRecentEventsPerRoom, res)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: This should be done in getStateDeltas
|
||||
if err = d.addInvitesToResponse(ctx, txn, device.UserID, fromPos, toPos, res); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
succeeded = true
|
||||
return joinedRoomIDs, nil
|
||||
}
|
||||
|
||||
// addTypingDeltaToResponse adds all typing notifications to a sync response
|
||||
// since the specified position.
|
||||
func (d *SyncServerDatasource) addTypingDeltaToResponse(
|
||||
since types.StreamingToken,
|
||||
joinedRoomIDs []string,
|
||||
res *types.Response,
|
||||
) error {
|
||||
var jr types.JoinResponse
|
||||
var ok bool
|
||||
var err error
|
||||
for _, roomID := range joinedRoomIDs {
|
||||
if typingUsers, updated := d.Database.EDUCache.GetTypingUsersIfUpdatedAfter(
|
||||
roomID, int64(since.EDUPosition()),
|
||||
); updated {
|
||||
ev := gomatrixserverlib.ClientEvent{
|
||||
Type: gomatrixserverlib.MTyping,
|
||||
}
|
||||
ev.Content, err = json.Marshal(map[string]interface{}{
|
||||
"user_ids": typingUsers,
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if jr, ok = res.Rooms.Join[roomID]; !ok {
|
||||
jr = *types.NewJoinResponse()
|
||||
}
|
||||
jr.Ephemeral.Events = append(jr.Ephemeral.Events, ev)
|
||||
res.Rooms.Join[roomID] = jr
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// addEDUDeltaToResponse adds updates for EDUs of each type since fromPos if
|
||||
// the positions of that type are not equal in fromPos and toPos.
|
||||
func (d *SyncServerDatasource) addEDUDeltaToResponse(
|
||||
fromPos, toPos types.StreamingToken,
|
||||
joinedRoomIDs []string,
|
||||
res *types.Response,
|
||||
) (err error) {
|
||||
|
||||
if fromPos.EDUPosition() != toPos.EDUPosition() {
|
||||
err = d.addTypingDeltaToResponse(
|
||||
fromPos, joinedRoomIDs, res,
|
||||
)
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) IncrementalSync(
|
||||
ctx context.Context,
|
||||
device authtypes.Device,
|
||||
fromPos, toPos types.StreamingToken,
|
||||
numRecentEventsPerRoom int,
|
||||
wantFullState bool,
|
||||
) (*types.Response, error) {
|
||||
nextBatchPos := fromPos.WithUpdates(toPos)
|
||||
res := types.NewResponse(nextBatchPos)
|
||||
|
||||
var joinedRoomIDs []string
|
||||
var err error
|
||||
if fromPos.PDUPosition() != toPos.PDUPosition() || wantFullState {
|
||||
joinedRoomIDs, err = d.addPDUDeltaToResponse(
|
||||
ctx, device, fromPos.PDUPosition(), toPos.PDUPosition(), numRecentEventsPerRoom, wantFullState, res,
|
||||
)
|
||||
} else {
|
||||
joinedRoomIDs, err = d.roomstate.selectRoomIDsWithMembership(
|
||||
ctx, nil, device.UserID, gomatrixserverlib.Join,
|
||||
)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = d.addEDUDeltaToResponse(
|
||||
fromPos, toPos, joinedRoomIDs, res,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return res, nil
|
||||
}
|
||||
|
||||
// getResponseWithPDUsForCompleteSync creates a response and adds all PDUs needed
|
||||
// to it. It returns toPos and joinedRoomIDs for use of adding EDUs.
|
||||
func (d *SyncServerDatasource) getResponseWithPDUsForCompleteSync(
|
||||
ctx context.Context,
|
||||
userID string,
|
||||
numRecentEventsPerRoom int,
|
||||
) (
|
||||
res *types.Response,
|
||||
toPos types.StreamingToken,
|
||||
joinedRoomIDs []string,
|
||||
err error,
|
||||
) {
|
||||
// This needs to be all done in a transaction as we need to do multiple SELECTs, and we need to have
|
||||
// a consistent view of the database throughout. This includes extracting the sync position.
|
||||
// This does have the unfortunate side-effect that all the matrixy logic resides in this function,
|
||||
// but it's better to not hide the fact that this is being done in a transaction.
|
||||
txn, err := d.db.BeginTx(ctx, &txReadOnlySnapshot)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
var succeeded bool
|
||||
defer func() {
|
||||
txerr := common.EndTransaction(txn, &succeeded)
|
||||
if err == nil && txerr != nil {
|
||||
err = txerr
|
||||
}
|
||||
}()
|
||||
|
||||
// Get the current sync position which we will base the sync response on.
|
||||
toPos, err = d.syncPositionTx(ctx, txn)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
res = types.NewResponse(toPos)
|
||||
|
||||
// Extract room state and recent events for all rooms the user is joined to.
|
||||
joinedRoomIDs, err = d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
stateFilter := gomatrixserverlib.DefaultStateFilter() // TODO: use filter provided in request
|
||||
|
||||
// Build up a /sync response. Add joined rooms.
|
||||
for _, roomID := range joinedRoomIDs {
|
||||
var stateEvents []gomatrixserverlib.HeaderedEvent
|
||||
stateEvents, err = d.roomstate.selectCurrentState(ctx, txn, roomID, &stateFilter)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
// TODO: When filters are added, we may need to call this multiple times to get enough events.
|
||||
// See: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L316
|
||||
var recentStreamEvents []types.StreamEvent
|
||||
recentStreamEvents, err = d.Database.OutputEvents.SelectRecentEvents(
|
||||
ctx, txn, roomID, types.StreamPosition(0), toPos.PDUPosition(),
|
||||
numRecentEventsPerRoom, true, true,
|
||||
)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Retrieve the backward topology position, i.e. the position of the
|
||||
// oldest event in the room's topology.
|
||||
var prevBatchStr string
|
||||
if len(recentStreamEvents) > 0 {
|
||||
var backwardTopologyPos, backwardStreamPos types.StreamPosition
|
||||
backwardTopologyPos, backwardStreamPos, err = d.topology.selectPositionInTopology(ctx, recentStreamEvents[0].EventID())
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
prevBatch := types.NewTopologyToken(backwardTopologyPos, backwardStreamPos)
|
||||
prevBatch.Decrement()
|
||||
prevBatchStr = prevBatch.String()
|
||||
}
|
||||
|
||||
// We don't include a device here as we don't need to send down
|
||||
// transaction IDs for complete syncs
|
||||
recentEvents := d.StreamEventsToEvents(nil, recentStreamEvents)
|
||||
stateEvents = removeDuplicates(stateEvents, recentEvents)
|
||||
jr := types.NewJoinResponse()
|
||||
jr.Timeline.PrevBatch = prevBatchStr
|
||||
jr.Timeline.Events = gomatrixserverlib.HeaderedToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
|
||||
jr.Timeline.Limited = true
|
||||
jr.State.Events = gomatrixserverlib.HeaderedToClientEvents(stateEvents, gomatrixserverlib.FormatSync)
|
||||
res.Rooms.Join[roomID] = *jr
|
||||
}
|
||||
|
||||
if err = d.addInvitesToResponse(ctx, txn, userID, 0, toPos.PDUPosition(), res); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
succeeded = true
|
||||
return res, toPos, joinedRoomIDs, err
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) CompleteSync(
|
||||
ctx context.Context, userID string, numRecentEventsPerRoom int,
|
||||
) (*types.Response, error) {
|
||||
res, toPos, joinedRoomIDs, err := d.getResponseWithPDUsForCompleteSync(
|
||||
ctx, userID, numRecentEventsPerRoom,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Use a zero value SyncPosition for fromPos so all EDU states are added.
|
||||
err = d.addEDUDeltaToResponse(
|
||||
types.NewStreamToken(0, 0), toPos, joinedRoomIDs, res,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return res, nil
|
||||
}
|
||||
|
||||
var txReadOnlySnapshot = sql.TxOptions{
|
||||
// Set the isolation level so that we see a snapshot of the database.
|
||||
// In PostgreSQL repeatable read transactions will see a snapshot taken
|
||||
// at the first query, and since the transaction is read-only it can't
|
||||
// run into any serialisation errors.
|
||||
// https://www.postgresql.org/docs/9.5/static/transaction-iso.html#XACT-REPEATABLE-READ
|
||||
Isolation: sql.LevelRepeatableRead,
|
||||
ReadOnly: true,
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) addInvitesToResponse(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
userID string,
|
||||
fromPos, toPos types.StreamPosition,
|
||||
res *types.Response,
|
||||
) error {
|
||||
invites, err := d.Database.Invites.SelectInviteEventsInRange(
|
||||
ctx, txn, userID, fromPos, toPos,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for roomID, inviteEvent := range invites {
|
||||
ir := types.NewInviteResponse(inviteEvent)
|
||||
res.Rooms.Invite[roomID] = *ir
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Retrieve the backward topology position, i.e. the position of the
|
||||
// oldest event in the room's topology.
|
||||
func (d *SyncServerDatasource) getBackwardTopologyPos(
|
||||
ctx context.Context,
|
||||
events []types.StreamEvent,
|
||||
) (pos, spos types.StreamPosition) {
|
||||
if len(events) > 0 {
|
||||
pos, spos, _ = d.topology.selectPositionInTopology(ctx, events[0].EventID())
|
||||
}
|
||||
if pos-1 <= 0 {
|
||||
pos = types.StreamPosition(1)
|
||||
} else {
|
||||
pos = pos - 1
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// addRoomDeltaToResponse adds a room state delta to a sync response
|
||||
func (d *SyncServerDatasource) addRoomDeltaToResponse(
|
||||
ctx context.Context,
|
||||
device *authtypes.Device,
|
||||
txn *sql.Tx,
|
||||
fromPos, toPos types.StreamPosition,
|
||||
delta stateDelta,
|
||||
numRecentEventsPerRoom int,
|
||||
res *types.Response,
|
||||
) error {
|
||||
endPos := toPos
|
||||
if delta.membershipPos > 0 && delta.membership == gomatrixserverlib.Leave {
|
||||
// make sure we don't leak recent events after the leave event.
|
||||
// TODO: History visibility makes this somewhat complex to handle correctly. For example:
|
||||
// TODO: This doesn't work for join -> leave in a single /sync request (see events prior to join).
|
||||
// TODO: This will fail on join -> leave -> sensitive msg -> join -> leave
|
||||
// in a single /sync request
|
||||
// This is all "okay" assuming history_visibility == "shared" which it is by default.
|
||||
endPos = delta.membershipPos
|
||||
}
|
||||
recentStreamEvents, err := d.Database.OutputEvents.SelectRecentEvents(
|
||||
ctx, txn, delta.roomID, types.StreamPosition(fromPos), types.StreamPosition(endPos),
|
||||
numRecentEventsPerRoom, true, true,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
recentEvents := d.StreamEventsToEvents(device, recentStreamEvents)
|
||||
delta.stateEvents = removeDuplicates(delta.stateEvents, recentEvents) // roll back
|
||||
backwardTopologyPos, backwardStreamPos := d.getBackwardTopologyPos(ctx, recentStreamEvents)
|
||||
prevBatch := types.NewTopologyToken(
|
||||
backwardTopologyPos, backwardStreamPos,
|
||||
)
|
||||
|
||||
switch delta.membership {
|
||||
case gomatrixserverlib.Join:
|
||||
jr := types.NewJoinResponse()
|
||||
|
||||
jr.Timeline.PrevBatch = prevBatch.String()
|
||||
jr.Timeline.Events = gomatrixserverlib.HeaderedToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
|
||||
jr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
|
||||
jr.State.Events = gomatrixserverlib.HeaderedToClientEvents(delta.stateEvents, gomatrixserverlib.FormatSync)
|
||||
res.Rooms.Join[delta.roomID] = *jr
|
||||
case gomatrixserverlib.Leave:
|
||||
fallthrough // transitions to leave are the same as ban
|
||||
case gomatrixserverlib.Ban:
|
||||
// TODO: recentEvents may contain events that this user is not allowed to see because they are
|
||||
// no longer in the room.
|
||||
lr := types.NewLeaveResponse()
|
||||
lr.Timeline.PrevBatch = prevBatch.String()
|
||||
lr.Timeline.Events = gomatrixserverlib.HeaderedToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
|
||||
lr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
|
||||
lr.State.Events = gomatrixserverlib.HeaderedToClientEvents(delta.stateEvents, gomatrixserverlib.FormatSync)
|
||||
res.Rooms.Leave[delta.roomID] = *lr
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// fetchStateEvents converts the set of event IDs into a set of events. It will fetch any which are missing from the database.
|
||||
// Returns a map of room ID to list of events.
|
||||
func (d *SyncServerDatasource) fetchStateEvents(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
roomIDToEventIDSet map[string]map[string]bool,
|
||||
eventIDToEvent map[string]types.StreamEvent,
|
||||
) (map[string][]types.StreamEvent, error) {
|
||||
stateBetween := make(map[string][]types.StreamEvent)
|
||||
missingEvents := make(map[string][]string)
|
||||
for roomID, ids := range roomIDToEventIDSet {
|
||||
events := stateBetween[roomID]
|
||||
for id, need := range ids {
|
||||
if !need {
|
||||
continue // deleted state
|
||||
}
|
||||
e, ok := eventIDToEvent[id]
|
||||
if ok {
|
||||
events = append(events, e)
|
||||
} else {
|
||||
m := missingEvents[roomID]
|
||||
m = append(m, id)
|
||||
missingEvents[roomID] = m
|
||||
}
|
||||
}
|
||||
stateBetween[roomID] = events
|
||||
}
|
||||
|
||||
if len(missingEvents) > 0 {
|
||||
// This happens when add_state_ids has an event ID which is not in the provided range.
|
||||
// We need to explicitly fetch them.
|
||||
allMissingEventIDs := []string{}
|
||||
for _, missingEvIDs := range missingEvents {
|
||||
allMissingEventIDs = append(allMissingEventIDs, missingEvIDs...)
|
||||
}
|
||||
evs, err := d.fetchMissingStateEvents(ctx, txn, allMissingEventIDs)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// 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 *SyncServerDatasource) fetchMissingStateEvents(
|
||||
ctx context.Context, txn *sql.Tx, eventIDs []string,
|
||||
) ([]types.StreamEvent, error) {
|
||||
// Fetch from the events table first so we pick up the stream ID for the
|
||||
// event.
|
||||
events, err := d.Database.OutputEvents.SelectEvents(ctx, txn, eventIDs)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
have := map[string]bool{}
|
||||
for _, event := range events {
|
||||
have[event.EventID()] = true
|
||||
}
|
||||
var missing []string
|
||||
for _, eventID := range eventIDs {
|
||||
if !have[eventID] {
|
||||
missing = append(missing, eventID)
|
||||
}
|
||||
}
|
||||
if len(missing) == 0 {
|
||||
return events, nil
|
||||
}
|
||||
|
||||
// If they are missing from the events table then they should be state
|
||||
// events that we received from outside the main event stream.
|
||||
// These should be in the room state table.
|
||||
stateEvents, err := d.roomstate.selectEventsWithEventIDs(ctx, txn, missing)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(stateEvents) != len(missing) {
|
||||
return nil, fmt.Errorf("failed to map all event IDs to events: (got %d, wanted %d)", len(stateEvents), len(missing))
|
||||
}
|
||||
events = append(events, stateEvents...)
|
||||
return events, nil
|
||||
}
|
||||
|
||||
// getStateDeltas returns the state deltas between fromPos and toPos,
|
||||
// exclusive of oldPos, inclusive of newPos, for the rooms in which
|
||||
// the user has new membership events.
|
||||
// A list of joined room IDs is also returned in case the caller needs it.
|
||||
func (d *SyncServerDatasource) getStateDeltas(
|
||||
ctx context.Context, device *authtypes.Device, txn *sql.Tx,
|
||||
fromPos, toPos types.StreamPosition, userID string,
|
||||
stateFilter *gomatrixserverlib.StateFilter,
|
||||
) ([]stateDelta, []string, 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
|
||||
// - For each room which has membership list changes:
|
||||
// * Check if the room is 'newly joined' (insufficient to just check for a join event because we allow dupe joins TODO).
|
||||
// If it is, then we need to send the full room state down (and 'limited' is always true).
|
||||
// * Check if user is still CURRENTLY invited to the room. If so, add room to 'invited' block.
|
||||
// * Check if the user is CURRENTLY (TODO) left/banned. If so, add room to 'archived' block.
|
||||
// - Get all CURRENTLY joined rooms, and add them to 'joined' block.
|
||||
var deltas []stateDelta
|
||||
|
||||
// get all the state events ever between these two positions
|
||||
stateNeeded, eventMap, err := d.Database.OutputEvents.SelectStateInRange(ctx, txn, fromPos, toPos, stateFilter)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
|
||||
if err != nil {
|
||||
return nil, 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.
|
||||
// We should be checking if the user was already joined at fromPos and not proceed if so. As a result of this,
|
||||
// dupe join events will result in the entire room state coming down to the client again. This is added in
|
||||
// the 'state' part of the response though, so is transparent modulo bandwidth concerns as it is not added to
|
||||
// the timeline.
|
||||
if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
|
||||
if membership == gomatrixserverlib.Join {
|
||||
// send full room state down instead of a delta
|
||||
var s []types.StreamEvent
|
||||
s, err = d.currentStateStreamEventsForRoom(ctx, txn, roomID, stateFilter)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
state[roomID] = s
|
||||
continue // we'll add this room in when we do joined rooms
|
||||
}
|
||||
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: membership,
|
||||
membershipPos: ev.StreamPosition,
|
||||
stateEvents: d.StreamEventsToEvents(device, stateStreamEvents),
|
||||
roomID: roomID,
|
||||
})
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Add in currently joined rooms
|
||||
joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
for _, joinedRoomID := range joinedRoomIDs {
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: gomatrixserverlib.Join,
|
||||
stateEvents: d.StreamEventsToEvents(device, state[joinedRoomID]),
|
||||
roomID: joinedRoomID,
|
||||
})
|
||||
}
|
||||
|
||||
return deltas, joinedRoomIDs, nil
|
||||
}
|
||||
|
||||
// getStateDeltasForFullStateSync is a variant of getStateDeltas used for /sync
|
||||
// requests with full_state=true.
|
||||
// Fetches full state for all joined rooms and uses selectStateInRange to get
|
||||
// updates for other rooms.
|
||||
func (d *SyncServerDatasource) getStateDeltasForFullStateSync(
|
||||
ctx context.Context, device *authtypes.Device, txn *sql.Tx,
|
||||
fromPos, toPos types.StreamPosition, userID string,
|
||||
stateFilter *gomatrixserverlib.StateFilter,
|
||||
) ([]stateDelta, []string, error) {
|
||||
joinedRoomIDs, err := d.roomstate.selectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// Use a reasonable initial capacity
|
||||
deltas := make([]stateDelta, 0, len(joinedRoomIDs))
|
||||
|
||||
// Add full states for all joined rooms
|
||||
for _, joinedRoomID := range joinedRoomIDs {
|
||||
s, stateErr := d.currentStateStreamEventsForRoom(ctx, txn, joinedRoomID, stateFilter)
|
||||
if stateErr != nil {
|
||||
return nil, nil, stateErr
|
||||
}
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: gomatrixserverlib.Join,
|
||||
stateEvents: d.StreamEventsToEvents(device, s),
|
||||
roomID: joinedRoomID,
|
||||
})
|
||||
}
|
||||
|
||||
// Get all the state events ever between these two positions
|
||||
stateNeeded, eventMap, err := d.Database.OutputEvents.SelectStateInRange(ctx, txn, fromPos, toPos, stateFilter)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
for roomID, stateStreamEvents := range state {
|
||||
for _, ev := range stateStreamEvents {
|
||||
if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
|
||||
if membership != gomatrixserverlib.Join { // We've already added full state for all joined rooms above.
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: membership,
|
||||
membershipPos: ev.StreamPosition,
|
||||
stateEvents: d.StreamEventsToEvents(device, stateStreamEvents),
|
||||
roomID: roomID,
|
||||
})
|
||||
}
|
||||
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return deltas, joinedRoomIDs, nil
|
||||
}
|
||||
|
||||
func (d *SyncServerDatasource) currentStateStreamEventsForRoom(
|
||||
ctx context.Context, txn *sql.Tx, roomID string,
|
||||
stateFilter *gomatrixserverlib.StateFilter,
|
||||
) ([]types.StreamEvent, error) {
|
||||
allState, err := d.roomstate.selectCurrentState(ctx, txn, roomID, stateFilter)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
s := make([]types.StreamEvent, len(allState))
|
||||
for i := 0; i < len(s); i++ {
|
||||
s[i] = types.StreamEvent{HeaderedEvent: allState[i], StreamPosition: 0}
|
||||
}
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// There may be some overlap where events in stateEvents are already in recentEvents, so filter
|
||||
// them out so we don't include them twice in the /sync response. They should be in recentEvents
|
||||
// only, so clients get to the correct state once they have rolled forward.
|
||||
func removeDuplicates(stateEvents, recentEvents []gomatrixserverlib.HeaderedEvent) []gomatrixserverlib.HeaderedEvent {
|
||||
for _, recentEv := range recentEvents {
|
||||
if recentEv.StateKey() == nil {
|
||||
continue // not a state event
|
||||
}
|
||||
// TODO: This is a linear scan over all the current state events in this room. This will
|
||||
// be slow for big rooms. We should instead sort the state events by event ID (ORDER BY)
|
||||
// then do a binary search to find matching events, similar to what roomserver does.
|
||||
for j := 0; j < len(stateEvents); j++ {
|
||||
if stateEvents[j].EventID() == recentEv.EventID() {
|
||||
// overwrite the element to remove with the last element then pop the last element.
|
||||
// This is orders of magnitude faster than re-slicing, but doesn't preserve ordering
|
||||
// (we don't care about the order of stateEvents)
|
||||
stateEvents[j] = stateEvents[len(stateEvents)-1]
|
||||
stateEvents = stateEvents[:len(stateEvents)-1]
|
||||
break // there shouldn't be multiple events with the same event ID
|
||||
}
|
||||
}
|
||||
}
|
||||
return stateEvents
|
||||
}
|
||||
|
||||
// getMembershipFromEvent returns the value of content.membership iff the event is a state event
|
||||
// with type 'm.room.member' and state_key of userID. Otherwise, an empty string is returned.
|
||||
func getMembershipFromEvent(ev *gomatrixserverlib.Event, userID string) string {
|
||||
if ev.Type() == "m.room.member" && ev.StateKeyEquals(userID) {
|
||||
membership, err := ev.Membership()
|
||||
if err != nil {
|
||||
return ""
|
||||
}
|
||||
return membership
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
@ -3,11 +3,14 @@ package shared
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
"encoding/json"
|
||||
"fmt"
|
||||
"time"
|
||||
|
||||
"github.com/matrix-org/dendrite/clientapi/auth/authtypes"
|
||||
"github.com/matrix-org/dendrite/common"
|
||||
"github.com/matrix-org/dendrite/eduserver/cache"
|
||||
"github.com/matrix-org/dendrite/roomserver/api"
|
||||
"github.com/matrix-org/dendrite/syncapi/storage/tables"
|
||||
"github.com/matrix-org/dendrite/syncapi/types"
|
||||
"github.com/matrix-org/gomatrixserverlib"
|
||||
@ -17,11 +20,14 @@ import (
|
||||
// Database is a temporary struct until we have made syncserver.go the same for both pq/sqlite
|
||||
// For now this contains the shared functions
|
||||
type Database struct {
|
||||
DB *sql.DB
|
||||
Invites tables.Invites
|
||||
AccountData tables.AccountData
|
||||
OutputEvents tables.Events
|
||||
EDUCache *cache.EDUCache
|
||||
DB *sql.DB
|
||||
Invites tables.Invites
|
||||
AccountData tables.AccountData
|
||||
OutputEvents tables.Events
|
||||
Topology tables.Topology
|
||||
CurrentRoomState tables.CurrentRoomState
|
||||
BackwardExtremities tables.BackwardsExtremities
|
||||
EDUCache *cache.EDUCache
|
||||
}
|
||||
|
||||
// Events lookups a list of event by their event ID.
|
||||
@ -82,6 +88,26 @@ func (d *Database) SetTypingTimeoutCallback(fn cache.TimeoutCallbackFn) {
|
||||
d.EDUCache.SetTimeoutCallback(fn)
|
||||
}
|
||||
|
||||
func (d *Database) AllJoinedUsersInRooms(ctx context.Context) (map[string][]string, error) {
|
||||
return d.CurrentRoomState.SelectJoinedUsers(ctx)
|
||||
}
|
||||
|
||||
func (d *Database) GetStateEvent(
|
||||
ctx context.Context, roomID, evType, stateKey string,
|
||||
) (*gomatrixserverlib.HeaderedEvent, error) {
|
||||
return d.CurrentRoomState.SelectStateEvent(ctx, roomID, evType, stateKey)
|
||||
}
|
||||
|
||||
func (d *Database) GetStateEventsForRoom(
|
||||
ctx context.Context, roomID string, stateFilter *gomatrixserverlib.StateFilter,
|
||||
) (stateEvents []gomatrixserverlib.HeaderedEvent, err error) {
|
||||
err = common.WithTransaction(d.DB, func(txn *sql.Tx) error {
|
||||
stateEvents, err = d.CurrentRoomState.SelectCurrentState(ctx, txn, roomID, stateFilter)
|
||||
return err
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
func (d *Database) SyncStreamPosition(ctx context.Context) (types.StreamPosition, error) {
|
||||
var maxID int64
|
||||
var err error
|
||||
@ -182,3 +208,863 @@ func (d *Database) StreamEventsToEvents(device *authtypes.Device, in []types.Str
|
||||
}
|
||||
return out
|
||||
}
|
||||
|
||||
// handleBackwardExtremities adds this event as a backwards extremity if and only if we do not have all of
|
||||
// the events listed in the event's 'prev_events'. This function also updates the backwards extremities table
|
||||
// to account for the fact that the given event is no longer a backwards extremity, but may be marked as such.
|
||||
func (d *Database) handleBackwardExtremities(ctx context.Context, txn *sql.Tx, ev *gomatrixserverlib.HeaderedEvent) error {
|
||||
if err := d.BackwardExtremities.DeleteBackwardExtremity(ctx, txn, ev.RoomID(), ev.EventID()); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
// Check if we have all of the event's previous events. If an event is
|
||||
// missing, add it to the room's backward extremities.
|
||||
prevEvents, err := d.OutputEvents.SelectEvents(ctx, txn, ev.PrevEventIDs())
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
var found bool
|
||||
for _, eID := range ev.PrevEventIDs() {
|
||||
found = false
|
||||
for _, prevEv := range prevEvents {
|
||||
if eID == prevEv.EventID() {
|
||||
found = true
|
||||
}
|
||||
}
|
||||
|
||||
// If the event is missing, consider it a backward extremity.
|
||||
if !found {
|
||||
if err = d.BackwardExtremities.InsertsBackwardExtremity(ctx, txn, ev.RoomID(), ev.EventID(), eID); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *Database) WriteEvent(
|
||||
ctx context.Context,
|
||||
ev *gomatrixserverlib.HeaderedEvent,
|
||||
addStateEvents []gomatrixserverlib.HeaderedEvent,
|
||||
addStateEventIDs, removeStateEventIDs []string,
|
||||
transactionID *api.TransactionID, excludeFromSync bool,
|
||||
) (pduPosition types.StreamPosition, returnErr error) {
|
||||
returnErr = common.WithTransaction(d.DB, func(txn *sql.Tx) error {
|
||||
var err error
|
||||
pos, err := d.OutputEvents.InsertEvent(
|
||||
ctx, txn, ev, addStateEventIDs, removeStateEventIDs, transactionID, excludeFromSync,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
pduPosition = pos
|
||||
|
||||
if err = d.Topology.InsertEventInTopology(ctx, txn, ev, pos); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if err = d.handleBackwardExtremities(ctx, txn, ev); err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if len(addStateEvents) == 0 && len(removeStateEventIDs) == 0 {
|
||||
// Nothing to do, the event may have just been a message event.
|
||||
return nil
|
||||
}
|
||||
|
||||
return d.updateRoomState(ctx, txn, removeStateEventIDs, addStateEvents, pduPosition)
|
||||
})
|
||||
|
||||
return pduPosition, returnErr
|
||||
}
|
||||
|
||||
func (d *Database) updateRoomState(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
removedEventIDs []string,
|
||||
addedEvents []gomatrixserverlib.HeaderedEvent,
|
||||
pduPosition types.StreamPosition,
|
||||
) error {
|
||||
// remove first, then add, as we do not ever delete state, but do replace state which is a remove followed by an add.
|
||||
for _, eventID := range removedEventIDs {
|
||||
if err := d.CurrentRoomState.DeleteRoomStateByEventID(ctx, txn, eventID); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
for _, event := range addedEvents {
|
||||
if event.StateKey() == nil {
|
||||
// ignore non state events
|
||||
continue
|
||||
}
|
||||
var membership *string
|
||||
if event.Type() == "m.room.member" {
|
||||
value, err := event.Membership()
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
membership = &value
|
||||
}
|
||||
if err := d.CurrentRoomState.UpsertRoomState(ctx, txn, event, membership, pduPosition); err != nil {
|
||||
return err
|
||||
}
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
func (d *Database) GetEventsInTopologicalRange(
|
||||
ctx context.Context,
|
||||
from, to *types.TopologyToken,
|
||||
roomID string, limit int,
|
||||
backwardOrdering bool,
|
||||
) (events []types.StreamEvent, err error) {
|
||||
// Determine the backward and forward limit, i.e. the upper and lower
|
||||
// limits to the selection in the room's topology, from the direction.
|
||||
var backwardLimit, forwardLimit, forwardMicroLimit types.StreamPosition
|
||||
if backwardOrdering {
|
||||
// Backward ordering is antichronological (latest event to oldest
|
||||
// one).
|
||||
backwardLimit = to.Depth()
|
||||
forwardLimit = from.Depth()
|
||||
forwardMicroLimit = from.PDUPosition()
|
||||
} else {
|
||||
// Forward ordering is chronological (oldest event to latest one).
|
||||
backwardLimit = from.Depth()
|
||||
forwardLimit = to.Depth()
|
||||
}
|
||||
|
||||
// Select the event IDs from the defined range.
|
||||
var eIDs []string
|
||||
eIDs, err = d.Topology.SelectEventIDsInRange(
|
||||
ctx, nil, roomID, backwardLimit, forwardLimit, forwardMicroLimit, limit, !backwardOrdering,
|
||||
)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Retrieve the events' contents using their IDs.
|
||||
events, err = d.OutputEvents.SelectEvents(ctx, nil, eIDs)
|
||||
return
|
||||
}
|
||||
|
||||
func (d *Database) SyncPosition(ctx context.Context) (tok types.StreamingToken, err error) {
|
||||
err = common.WithTransaction(d.DB, func(txn *sql.Tx) error {
|
||||
pos, err := d.SyncPositionTx(ctx, txn)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
tok = pos
|
||||
return nil
|
||||
})
|
||||
return
|
||||
}
|
||||
|
||||
func (d *Database) BackwardExtremitiesForRoom(
|
||||
ctx context.Context, roomID string,
|
||||
) (backwardExtremities []string, err error) {
|
||||
return d.BackwardExtremities.SelectBackwardExtremitiesForRoom(ctx, roomID)
|
||||
}
|
||||
|
||||
func (d *Database) MaxTopologicalPosition(
|
||||
ctx context.Context, roomID string,
|
||||
) (depth types.StreamPosition, stream types.StreamPosition, err error) {
|
||||
return d.Topology.SelectMaxPositionInTopology(ctx, nil, roomID)
|
||||
}
|
||||
|
||||
func (d *Database) EventsAtTopologicalPosition(
|
||||
ctx context.Context, roomID string, pos types.StreamPosition,
|
||||
) ([]types.StreamEvent, error) {
|
||||
eIDs, err := d.Topology.SelectEventIDsFromPosition(ctx, nil, roomID, pos)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return d.OutputEvents.SelectEvents(ctx, nil, eIDs)
|
||||
}
|
||||
|
||||
func (d *Database) EventPositionInTopology(
|
||||
ctx context.Context, eventID string,
|
||||
) (depth types.StreamPosition, stream types.StreamPosition, err error) {
|
||||
return d.Topology.SelectPositionInTopology(ctx, nil, eventID)
|
||||
}
|
||||
|
||||
// TODO FIXME TEMPORARY PUBLIC
|
||||
func (d *Database) SyncPositionTx(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
) (sp types.StreamingToken, err error) {
|
||||
|
||||
maxEventID, err := d.OutputEvents.SelectMaxEventID(ctx, txn)
|
||||
if err != nil {
|
||||
return sp, err
|
||||
}
|
||||
maxAccountDataID, err := d.AccountData.SelectMaxAccountDataID(ctx, txn)
|
||||
if err != nil {
|
||||
return sp, err
|
||||
}
|
||||
if maxAccountDataID > maxEventID {
|
||||
maxEventID = maxAccountDataID
|
||||
}
|
||||
maxInviteID, err := d.Invites.SelectMaxInviteID(ctx, txn)
|
||||
if err != nil {
|
||||
return sp, err
|
||||
}
|
||||
if maxInviteID > maxEventID {
|
||||
maxEventID = maxInviteID
|
||||
}
|
||||
sp = types.NewStreamToken(types.StreamPosition(maxEventID), types.StreamPosition(d.EDUCache.GetLatestSyncPosition()))
|
||||
return
|
||||
}
|
||||
|
||||
// addPDUDeltaToResponse adds all PDU deltas to a sync response.
|
||||
// IDs of all rooms the user joined are returned so EDU deltas can be added for them.
|
||||
func (d *Database) addPDUDeltaToResponse(
|
||||
ctx context.Context,
|
||||
device authtypes.Device,
|
||||
fromPos, toPos types.StreamPosition,
|
||||
numRecentEventsPerRoom int,
|
||||
wantFullState bool,
|
||||
res *types.Response,
|
||||
) (joinedRoomIDs []string, err error) {
|
||||
txn, err := d.DB.BeginTx(ctx, &txReadOnlySnapshot)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
var succeeded bool
|
||||
defer func() {
|
||||
txerr := common.EndTransaction(txn, &succeeded)
|
||||
if err == nil && txerr != nil {
|
||||
err = txerr
|
||||
}
|
||||
}()
|
||||
|
||||
stateFilter := gomatrixserverlib.DefaultStateFilter() // TODO: use filter provided in request
|
||||
|
||||
// Work out which rooms to return in the response. This is done by getting not only the currently
|
||||
// joined rooms, but also which rooms have membership transitions for this user between the 2 PDU stream positions.
|
||||
// This works out what the 'state' key should be for each room as well as which membership block
|
||||
// to put the room into.
|
||||
var deltas []stateDelta
|
||||
if !wantFullState {
|
||||
deltas, joinedRoomIDs, err = d.getStateDeltas(
|
||||
ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilter,
|
||||
)
|
||||
} else {
|
||||
deltas, joinedRoomIDs, err = d.getStateDeltasForFullStateSync(
|
||||
ctx, &device, txn, fromPos, toPos, device.UserID, &stateFilter,
|
||||
)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
for _, delta := range deltas {
|
||||
err = d.addRoomDeltaToResponse(ctx, &device, txn, fromPos, toPos, delta, numRecentEventsPerRoom, res)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: This should be done in getStateDeltas
|
||||
if err = d.AddInvitesToResponse(ctx, txn, device.UserID, fromPos, toPos, res); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
succeeded = true
|
||||
return joinedRoomIDs, nil
|
||||
}
|
||||
|
||||
// addTypingDeltaToResponse adds all typing notifications to a sync response
|
||||
// since the specified position.
|
||||
func (d *Database) addTypingDeltaToResponse(
|
||||
since types.StreamingToken,
|
||||
joinedRoomIDs []string,
|
||||
res *types.Response,
|
||||
) error {
|
||||
var jr types.JoinResponse
|
||||
var ok bool
|
||||
var err error
|
||||
for _, roomID := range joinedRoomIDs {
|
||||
if typingUsers, updated := d.EDUCache.GetTypingUsersIfUpdatedAfter(
|
||||
roomID, int64(since.EDUPosition()),
|
||||
); updated {
|
||||
ev := gomatrixserverlib.ClientEvent{
|
||||
Type: gomatrixserverlib.MTyping,
|
||||
}
|
||||
ev.Content, err = json.Marshal(map[string]interface{}{
|
||||
"user_ids": typingUsers,
|
||||
})
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
if jr, ok = res.Rooms.Join[roomID]; !ok {
|
||||
jr = *types.NewJoinResponse()
|
||||
}
|
||||
jr.Ephemeral.Events = append(jr.Ephemeral.Events, ev)
|
||||
res.Rooms.Join[roomID] = jr
|
||||
}
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// addEDUDeltaToResponse adds updates for EDUs of each type since fromPos if
|
||||
// the positions of that type are not equal in fromPos and toPos.
|
||||
// TODO FIXME TEMPORARY PUBLIC
|
||||
func (d *Database) AddEDUDeltaToResponse(
|
||||
fromPos, toPos types.StreamingToken,
|
||||
joinedRoomIDs []string,
|
||||
res *types.Response,
|
||||
) (err error) {
|
||||
|
||||
if fromPos.EDUPosition() != toPos.EDUPosition() {
|
||||
err = d.addTypingDeltaToResponse(
|
||||
fromPos, joinedRoomIDs, res,
|
||||
)
|
||||
}
|
||||
|
||||
return
|
||||
}
|
||||
|
||||
func (d *Database) IncrementalSync(
|
||||
ctx context.Context,
|
||||
device authtypes.Device,
|
||||
fromPos, toPos types.StreamingToken,
|
||||
numRecentEventsPerRoom int,
|
||||
wantFullState bool,
|
||||
) (*types.Response, error) {
|
||||
nextBatchPos := fromPos.WithUpdates(toPos)
|
||||
res := types.NewResponse(nextBatchPos)
|
||||
|
||||
var joinedRoomIDs []string
|
||||
var err error
|
||||
if fromPos.PDUPosition() != toPos.PDUPosition() || wantFullState {
|
||||
joinedRoomIDs, err = d.addPDUDeltaToResponse(
|
||||
ctx, device, fromPos.PDUPosition(), toPos.PDUPosition(), numRecentEventsPerRoom, wantFullState, res,
|
||||
)
|
||||
} else {
|
||||
joinedRoomIDs, err = d.CurrentRoomState.SelectRoomIDsWithMembership(
|
||||
ctx, nil, device.UserID, gomatrixserverlib.Join,
|
||||
)
|
||||
}
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
err = d.AddEDUDeltaToResponse(
|
||||
fromPos, toPos, joinedRoomIDs, res,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return res, nil
|
||||
}
|
||||
|
||||
// getResponseWithPDUsForCompleteSync creates a response and adds all PDUs needed
|
||||
// to it. It returns toPos and joinedRoomIDs for use of adding EDUs.
|
||||
func (d *Database) getResponseWithPDUsForCompleteSync(
|
||||
ctx context.Context,
|
||||
userID string,
|
||||
numRecentEventsPerRoom int,
|
||||
) (
|
||||
res *types.Response,
|
||||
toPos types.StreamingToken,
|
||||
joinedRoomIDs []string,
|
||||
err error,
|
||||
) {
|
||||
// This needs to be all done in a transaction as we need to do multiple SELECTs, and we need to have
|
||||
// a consistent view of the database throughout. This includes extracting the sync position.
|
||||
// This does have the unfortunate side-effect that all the matrixy logic resides in this function,
|
||||
// but it's better to not hide the fact that this is being done in a transaction.
|
||||
txn, err := d.DB.BeginTx(ctx, &txReadOnlySnapshot)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
var succeeded bool
|
||||
defer func() {
|
||||
txerr := common.EndTransaction(txn, &succeeded)
|
||||
if err == nil && txerr != nil {
|
||||
err = txerr
|
||||
}
|
||||
}()
|
||||
|
||||
// Get the current sync position which we will base the sync response on.
|
||||
toPos, err = d.SyncPositionTx(ctx, txn)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
res = types.NewResponse(toPos)
|
||||
|
||||
// Extract room state and recent events for all rooms the user is joined to.
|
||||
joinedRoomIDs, err = d.CurrentRoomState.SelectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
stateFilter := gomatrixserverlib.DefaultStateFilter() // TODO: use filter provided in request
|
||||
|
||||
// Build up a /sync response. Add joined rooms.
|
||||
for _, roomID := range joinedRoomIDs {
|
||||
var stateEvents []gomatrixserverlib.HeaderedEvent
|
||||
stateEvents, err = d.CurrentRoomState.SelectCurrentState(ctx, txn, roomID, &stateFilter)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
// TODO: When filters are added, we may need to call this multiple times to get enough events.
|
||||
// See: https://github.com/matrix-org/synapse/blob/v0.19.3/synapse/handlers/sync.py#L316
|
||||
var recentStreamEvents []types.StreamEvent
|
||||
recentStreamEvents, err = d.OutputEvents.SelectRecentEvents(
|
||||
ctx, txn, roomID, types.StreamPosition(0), toPos.PDUPosition(),
|
||||
numRecentEventsPerRoom, true, true,
|
||||
)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
// Retrieve the backward topology position, i.e. the position of the
|
||||
// oldest event in the room's topology.
|
||||
var prevBatchStr string
|
||||
if len(recentStreamEvents) > 0 {
|
||||
var backwardTopologyPos, backwardStreamPos types.StreamPosition
|
||||
backwardTopologyPos, backwardStreamPos, err = d.Topology.SelectPositionInTopology(ctx, txn, recentStreamEvents[0].EventID())
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
prevBatch := types.NewTopologyToken(backwardTopologyPos, backwardStreamPos)
|
||||
prevBatch.Decrement()
|
||||
prevBatchStr = prevBatch.String()
|
||||
}
|
||||
|
||||
// We don't include a device here as we don't need to send down
|
||||
// transaction IDs for complete syncs
|
||||
recentEvents := d.StreamEventsToEvents(nil, recentStreamEvents)
|
||||
stateEvents = removeDuplicates(stateEvents, recentEvents)
|
||||
jr := types.NewJoinResponse()
|
||||
jr.Timeline.PrevBatch = prevBatchStr
|
||||
jr.Timeline.Events = gomatrixserverlib.HeaderedToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
|
||||
jr.Timeline.Limited = true
|
||||
jr.State.Events = gomatrixserverlib.HeaderedToClientEvents(stateEvents, gomatrixserverlib.FormatSync)
|
||||
res.Rooms.Join[roomID] = *jr
|
||||
}
|
||||
|
||||
if err = d.AddInvitesToResponse(ctx, txn, userID, 0, toPos.PDUPosition(), res); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
succeeded = true
|
||||
return res, toPos, joinedRoomIDs, err
|
||||
}
|
||||
|
||||
func (d *Database) CompleteSync(
|
||||
ctx context.Context, userID string, numRecentEventsPerRoom int,
|
||||
) (*types.Response, error) {
|
||||
res, toPos, joinedRoomIDs, err := d.getResponseWithPDUsForCompleteSync(
|
||||
ctx, userID, numRecentEventsPerRoom,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
// Use a zero value SyncPosition for fromPos so all EDU states are added.
|
||||
err = d.AddEDUDeltaToResponse(
|
||||
types.NewStreamToken(0, 0), toPos, joinedRoomIDs, res,
|
||||
)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
return res, nil
|
||||
}
|
||||
|
||||
var txReadOnlySnapshot = sql.TxOptions{
|
||||
// Set the isolation level so that we see a snapshot of the database.
|
||||
// In PostgreSQL repeatable read transactions will see a snapshot taken
|
||||
// at the first query, and since the transaction is read-only it can't
|
||||
// run into any serialisation errors.
|
||||
// https://www.postgresql.org/docs/9.5/static/transaction-iso.html#XACT-REPEATABLE-READ
|
||||
Isolation: sql.LevelRepeatableRead,
|
||||
ReadOnly: true,
|
||||
}
|
||||
|
||||
// TODO FIXME temporary public
|
||||
func (d *Database) AddInvitesToResponse(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
userID string,
|
||||
fromPos, toPos types.StreamPosition,
|
||||
res *types.Response,
|
||||
) error {
|
||||
invites, err := d.Invites.SelectInviteEventsInRange(
|
||||
ctx, txn, userID, fromPos, toPos,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
for roomID, inviteEvent := range invites {
|
||||
ir := types.NewInviteResponse(inviteEvent)
|
||||
res.Rooms.Invite[roomID] = *ir
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
// Retrieve the backward topology position, i.e. the position of the
|
||||
// oldest event in the room's topology.
|
||||
func (d *Database) getBackwardTopologyPos(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
events []types.StreamEvent,
|
||||
) (types.TopologyToken, error) {
|
||||
zeroToken := types.NewTopologyToken(0, 0)
|
||||
if len(events) == 0 {
|
||||
return zeroToken, nil
|
||||
}
|
||||
pos, spos, err := d.Topology.SelectPositionInTopology(ctx, txn, events[0].EventID())
|
||||
if err != nil {
|
||||
return zeroToken, err
|
||||
}
|
||||
tok := types.NewTopologyToken(pos, spos)
|
||||
tok.Decrement()
|
||||
return tok, nil
|
||||
}
|
||||
|
||||
// addRoomDeltaToResponse adds a room state delta to a sync response
|
||||
func (d *Database) addRoomDeltaToResponse(
|
||||
ctx context.Context,
|
||||
device *authtypes.Device,
|
||||
txn *sql.Tx,
|
||||
fromPos, toPos types.StreamPosition,
|
||||
delta stateDelta,
|
||||
numRecentEventsPerRoom int,
|
||||
res *types.Response,
|
||||
) error {
|
||||
endPos := toPos
|
||||
if delta.membershipPos > 0 && delta.membership == gomatrixserverlib.Leave {
|
||||
// make sure we don't leak recent events after the leave event.
|
||||
// TODO: History visibility makes this somewhat complex to handle correctly. For example:
|
||||
// TODO: This doesn't work for join -> leave in a single /sync request (see events prior to join).
|
||||
// TODO: This will fail on join -> leave -> sensitive msg -> join -> leave
|
||||
// in a single /sync request
|
||||
// This is all "okay" assuming history_visibility == "shared" which it is by default.
|
||||
endPos = delta.membershipPos
|
||||
}
|
||||
recentStreamEvents, err := d.OutputEvents.SelectRecentEvents(
|
||||
ctx, txn, delta.roomID, types.StreamPosition(fromPos), types.StreamPosition(endPos),
|
||||
numRecentEventsPerRoom, true, true,
|
||||
)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
recentEvents := d.StreamEventsToEvents(device, recentStreamEvents)
|
||||
delta.stateEvents = removeDuplicates(delta.stateEvents, recentEvents) // roll back
|
||||
prevBatch, err := d.getBackwardTopologyPos(ctx, txn, recentStreamEvents)
|
||||
if err != nil {
|
||||
return err
|
||||
}
|
||||
|
||||
switch delta.membership {
|
||||
case gomatrixserverlib.Join:
|
||||
jr := types.NewJoinResponse()
|
||||
|
||||
jr.Timeline.PrevBatch = prevBatch.String()
|
||||
jr.Timeline.Events = gomatrixserverlib.HeaderedToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
|
||||
jr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
|
||||
jr.State.Events = gomatrixserverlib.HeaderedToClientEvents(delta.stateEvents, gomatrixserverlib.FormatSync)
|
||||
res.Rooms.Join[delta.roomID] = *jr
|
||||
case gomatrixserverlib.Leave:
|
||||
fallthrough // transitions to leave are the same as ban
|
||||
case gomatrixserverlib.Ban:
|
||||
// TODO: recentEvents may contain events that this user is not allowed to see because they are
|
||||
// no longer in the room.
|
||||
lr := types.NewLeaveResponse()
|
||||
lr.Timeline.PrevBatch = prevBatch.String()
|
||||
lr.Timeline.Events = gomatrixserverlib.HeaderedToClientEvents(recentEvents, gomatrixserverlib.FormatSync)
|
||||
lr.Timeline.Limited = false // TODO: if len(events) >= numRecents + 1 and then set limited:true
|
||||
lr.State.Events = gomatrixserverlib.HeaderedToClientEvents(delta.stateEvents, gomatrixserverlib.FormatSync)
|
||||
res.Rooms.Leave[delta.roomID] = *lr
|
||||
}
|
||||
|
||||
return nil
|
||||
}
|
||||
|
||||
// fetchStateEvents converts the set of event IDs into a set of events. It will fetch any which are missing from the database.
|
||||
// Returns a map of room ID to list of events.
|
||||
func (d *Database) fetchStateEvents(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
roomIDToEventIDSet map[string]map[string]bool,
|
||||
eventIDToEvent map[string]types.StreamEvent,
|
||||
) (map[string][]types.StreamEvent, error) {
|
||||
stateBetween := make(map[string][]types.StreamEvent)
|
||||
missingEvents := make(map[string][]string)
|
||||
for roomID, ids := range roomIDToEventIDSet {
|
||||
events := stateBetween[roomID]
|
||||
for id, need := range ids {
|
||||
if !need {
|
||||
continue // deleted state
|
||||
}
|
||||
e, ok := eventIDToEvent[id]
|
||||
if ok {
|
||||
events = append(events, e)
|
||||
} else {
|
||||
m := missingEvents[roomID]
|
||||
m = append(m, id)
|
||||
missingEvents[roomID] = m
|
||||
}
|
||||
}
|
||||
stateBetween[roomID] = events
|
||||
}
|
||||
|
||||
if len(missingEvents) > 0 {
|
||||
// This happens when add_state_ids has an event ID which is not in the provided range.
|
||||
// We need to explicitly fetch them.
|
||||
allMissingEventIDs := []string{}
|
||||
for _, missingEvIDs := range missingEvents {
|
||||
allMissingEventIDs = append(allMissingEventIDs, missingEvIDs...)
|
||||
}
|
||||
evs, err := d.fetchMissingStateEvents(ctx, txn, allMissingEventIDs)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
// 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 *Database) fetchMissingStateEvents(
|
||||
ctx context.Context, txn *sql.Tx, eventIDs []string,
|
||||
) ([]types.StreamEvent, error) {
|
||||
// Fetch from the events table first so we pick up the stream ID for the
|
||||
// event.
|
||||
events, err := d.OutputEvents.SelectEvents(ctx, txn, eventIDs)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
have := map[string]bool{}
|
||||
for _, event := range events {
|
||||
have[event.EventID()] = true
|
||||
}
|
||||
var missing []string
|
||||
for _, eventID := range eventIDs {
|
||||
if !have[eventID] {
|
||||
missing = append(missing, eventID)
|
||||
}
|
||||
}
|
||||
if len(missing) == 0 {
|
||||
return events, nil
|
||||
}
|
||||
|
||||
// If they are missing from the events table then they should be state
|
||||
// events that we received from outside the main event stream.
|
||||
// These should be in the room state table.
|
||||
stateEvents, err := d.CurrentRoomState.SelectEventsWithEventIDs(ctx, txn, missing)
|
||||
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if len(stateEvents) != len(missing) {
|
||||
return nil, fmt.Errorf("failed to map all event IDs to events: (got %d, wanted %d)", len(stateEvents), len(missing))
|
||||
}
|
||||
events = append(events, stateEvents...)
|
||||
return events, nil
|
||||
}
|
||||
|
||||
// getStateDeltas returns the state deltas between fromPos and toPos,
|
||||
// exclusive of oldPos, inclusive of newPos, for the rooms in which
|
||||
// the user has new membership events.
|
||||
// A list of joined room IDs is also returned in case the caller needs it.
|
||||
func (d *Database) getStateDeltas(
|
||||
ctx context.Context, device *authtypes.Device, txn *sql.Tx,
|
||||
fromPos, toPos types.StreamPosition, userID string,
|
||||
stateFilter *gomatrixserverlib.StateFilter,
|
||||
) ([]stateDelta, []string, 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
|
||||
// - For each room which has membership list changes:
|
||||
// * Check if the room is 'newly joined' (insufficient to just check for a join event because we allow dupe joins TODO).
|
||||
// If it is, then we need to send the full room state down (and 'limited' is always true).
|
||||
// * Check if user is still CURRENTLY invited to the room. If so, add room to 'invited' block.
|
||||
// * Check if the user is CURRENTLY (TODO) left/banned. If so, add room to 'archived' block.
|
||||
// - Get all CURRENTLY joined rooms, and add them to 'joined' block.
|
||||
var deltas []stateDelta
|
||||
|
||||
// get all the state events ever between these two positions
|
||||
stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, fromPos, toPos, stateFilter)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
|
||||
if err != nil {
|
||||
return nil, 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.
|
||||
// We should be checking if the user was already joined at fromPos and not proceed if so. As a result of this,
|
||||
// dupe join events will result in the entire room state coming down to the client again. This is added in
|
||||
// the 'state' part of the response though, so is transparent modulo bandwidth concerns as it is not added to
|
||||
// the timeline.
|
||||
if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
|
||||
if membership == gomatrixserverlib.Join {
|
||||
// send full room state down instead of a delta
|
||||
var s []types.StreamEvent
|
||||
s, err = d.currentStateStreamEventsForRoom(ctx, txn, roomID, stateFilter)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
state[roomID] = s
|
||||
continue // we'll add this room in when we do joined rooms
|
||||
}
|
||||
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: membership,
|
||||
membershipPos: ev.StreamPosition,
|
||||
stateEvents: d.StreamEventsToEvents(device, stateStreamEvents),
|
||||
roomID: roomID,
|
||||
})
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Add in currently joined rooms
|
||||
joinedRoomIDs, err := d.CurrentRoomState.SelectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
for _, joinedRoomID := range joinedRoomIDs {
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: gomatrixserverlib.Join,
|
||||
stateEvents: d.StreamEventsToEvents(device, state[joinedRoomID]),
|
||||
roomID: joinedRoomID,
|
||||
})
|
||||
}
|
||||
|
||||
return deltas, joinedRoomIDs, nil
|
||||
}
|
||||
|
||||
// getStateDeltasForFullStateSync is a variant of getStateDeltas used for /sync
|
||||
// requests with full_state=true.
|
||||
// Fetches full state for all joined rooms and uses selectStateInRange to get
|
||||
// updates for other rooms.
|
||||
func (d *Database) getStateDeltasForFullStateSync(
|
||||
ctx context.Context, device *authtypes.Device, txn *sql.Tx,
|
||||
fromPos, toPos types.StreamPosition, userID string,
|
||||
stateFilter *gomatrixserverlib.StateFilter,
|
||||
) ([]stateDelta, []string, error) {
|
||||
joinedRoomIDs, err := d.CurrentRoomState.SelectRoomIDsWithMembership(ctx, txn, userID, gomatrixserverlib.Join)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
// Use a reasonable initial capacity
|
||||
deltas := make([]stateDelta, 0, len(joinedRoomIDs))
|
||||
|
||||
// Add full states for all joined rooms
|
||||
for _, joinedRoomID := range joinedRoomIDs {
|
||||
s, stateErr := d.currentStateStreamEventsForRoom(ctx, txn, joinedRoomID, stateFilter)
|
||||
if stateErr != nil {
|
||||
return nil, nil, stateErr
|
||||
}
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: gomatrixserverlib.Join,
|
||||
stateEvents: d.StreamEventsToEvents(device, s),
|
||||
roomID: joinedRoomID,
|
||||
})
|
||||
}
|
||||
|
||||
// Get all the state events ever between these two positions
|
||||
stateNeeded, eventMap, err := d.OutputEvents.SelectStateInRange(ctx, txn, fromPos, toPos, stateFilter)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
state, err := d.fetchStateEvents(ctx, txn, stateNeeded, eventMap)
|
||||
if err != nil {
|
||||
return nil, nil, err
|
||||
}
|
||||
|
||||
for roomID, stateStreamEvents := range state {
|
||||
for _, ev := range stateStreamEvents {
|
||||
if membership := getMembershipFromEvent(&ev.Event, userID); membership != "" {
|
||||
if membership != gomatrixserverlib.Join { // We've already added full state for all joined rooms above.
|
||||
deltas = append(deltas, stateDelta{
|
||||
membership: membership,
|
||||
membershipPos: ev.StreamPosition,
|
||||
stateEvents: d.StreamEventsToEvents(device, stateStreamEvents),
|
||||
roomID: roomID,
|
||||
})
|
||||
}
|
||||
|
||||
break
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
return deltas, joinedRoomIDs, nil
|
||||
}
|
||||
|
||||
func (d *Database) currentStateStreamEventsForRoom(
|
||||
ctx context.Context, txn *sql.Tx, roomID string,
|
||||
stateFilter *gomatrixserverlib.StateFilter,
|
||||
) ([]types.StreamEvent, error) {
|
||||
allState, err := d.CurrentRoomState.SelectCurrentState(ctx, txn, roomID, stateFilter)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
s := make([]types.StreamEvent, len(allState))
|
||||
for i := 0; i < len(s); i++ {
|
||||
s[i] = types.StreamEvent{HeaderedEvent: allState[i], StreamPosition: 0}
|
||||
}
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// There may be some overlap where events in stateEvents are already in recentEvents, so filter
|
||||
// them out so we don't include them twice in the /sync response. They should be in recentEvents
|
||||
// only, so clients get to the correct state once they have rolled forward.
|
||||
func removeDuplicates(stateEvents, recentEvents []gomatrixserverlib.HeaderedEvent) []gomatrixserverlib.HeaderedEvent {
|
||||
for _, recentEv := range recentEvents {
|
||||
if recentEv.StateKey() == nil {
|
||||
continue // not a state event
|
||||
}
|
||||
// TODO: This is a linear scan over all the current state events in this room. This will
|
||||
// be slow for big rooms. We should instead sort the state events by event ID (ORDER BY)
|
||||
// then do a binary search to find matching events, similar to what roomserver does.
|
||||
for j := 0; j < len(stateEvents); j++ {
|
||||
if stateEvents[j].EventID() == recentEv.EventID() {
|
||||
// overwrite the element to remove with the last element then pop the last element.
|
||||
// This is orders of magnitude faster than re-slicing, but doesn't preserve ordering
|
||||
// (we don't care about the order of stateEvents)
|
||||
stateEvents[j] = stateEvents[len(stateEvents)-1]
|
||||
stateEvents = stateEvents[:len(stateEvents)-1]
|
||||
break // there shouldn't be multiple events with the same event ID
|
||||
}
|
||||
}
|
||||
}
|
||||
return stateEvents
|
||||
}
|
||||
|
||||
// getMembershipFromEvent returns the value of content.membership iff the event is a state event
|
||||
// with type 'm.room.member' and state_key of userID. Otherwise, an empty string is returned.
|
||||
func getMembershipFromEvent(ev *gomatrixserverlib.Event, userID string) string {
|
||||
if ev.Type() == "m.room.member" && ev.StateKeyEquals(userID) {
|
||||
membership, err := ev.Membership()
|
||||
if err != nil {
|
||||
return ""
|
||||
}
|
||||
return membership
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
type stateDelta struct {
|
||||
roomID string
|
||||
stateEvents []gomatrixserverlib.HeaderedEvent
|
||||
membership string
|
||||
// The PDU stream position of the latest membership event for this user, if applicable.
|
||||
// Can be 0 if there is no membership event in this delta.
|
||||
membershipPos types.StreamPosition
|
||||
}
|
||||
|
||||
106
syncapi/storage/sqlite3/backwards_extremities_table.go
Normal file
106
syncapi/storage/sqlite3/backwards_extremities_table.go
Normal file
@ -0,0 +1,106 @@
|
||||
// Copyright 2018 New Vector Ltd
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package sqlite3
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
|
||||
"github.com/matrix-org/dendrite/common"
|
||||
"github.com/matrix-org/dendrite/syncapi/storage/tables"
|
||||
)
|
||||
|
||||
const backwardExtremitiesSchema = `
|
||||
-- Stores output room events received from the roomserver.
|
||||
CREATE TABLE IF NOT EXISTS syncapi_backward_extremities (
|
||||
-- The 'room_id' key for the event.
|
||||
room_id TEXT NOT NULL,
|
||||
-- The event ID for the last known event. This is the backwards extremity.
|
||||
event_id TEXT NOT NULL,
|
||||
-- The prev_events for the last known event. This is used to update extremities.
|
||||
prev_event_id TEXT NOT NULL,
|
||||
PRIMARY KEY(room_id, event_id, prev_event_id)
|
||||
);
|
||||
`
|
||||
|
||||
const insertBackwardExtremitySQL = "" +
|
||||
"INSERT INTO syncapi_backward_extremities (room_id, event_id, prev_event_id)" +
|
||||
" VALUES ($1, $2, $3)" +
|
||||
" ON CONFLICT (room_id, event_id, prev_event_id) DO NOTHING"
|
||||
|
||||
const selectBackwardExtremitiesForRoomSQL = "" +
|
||||
"SELECT DISTINCT event_id FROM syncapi_backward_extremities WHERE room_id = $1"
|
||||
|
||||
const deleteBackwardExtremitySQL = "" +
|
||||
"DELETE FROM syncapi_backward_extremities WHERE room_id = $1 AND prev_event_id = $2"
|
||||
|
||||
type backwardExtremitiesStatements struct {
|
||||
insertBackwardExtremityStmt *sql.Stmt
|
||||
selectBackwardExtremitiesForRoomStmt *sql.Stmt
|
||||
deleteBackwardExtremityStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func NewSqliteBackwardsExtremitiesTable(db *sql.DB) (tables.BackwardsExtremities, error) {
|
||||
s := &backwardExtremitiesStatements{}
|
||||
_, err := db.Exec(backwardExtremitiesSchema)
|
||||
if err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if s.insertBackwardExtremityStmt, err = db.Prepare(insertBackwardExtremitySQL); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if s.selectBackwardExtremitiesForRoomStmt, err = db.Prepare(selectBackwardExtremitiesForRoomSQL); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
if s.deleteBackwardExtremityStmt, err = db.Prepare(deleteBackwardExtremitySQL); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
return s, nil
|
||||
}
|
||||
|
||||
func (s *backwardExtremitiesStatements) InsertsBackwardExtremity(
|
||||
ctx context.Context, txn *sql.Tx, roomID, eventID string, prevEventID string,
|
||||
) (err error) {
|
||||
_, err = txn.Stmt(s.insertBackwardExtremityStmt).ExecContext(ctx, roomID, eventID, prevEventID)
|
||||
return
|
||||
}
|
||||
|
||||
func (s *backwardExtremitiesStatements) SelectBackwardExtremitiesForRoom(
|
||||
ctx context.Context, roomID string,
|
||||
) (eventIDs []string, err error) {
|
||||
rows, err := s.selectBackwardExtremitiesForRoomStmt.QueryContext(ctx, roomID)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer common.CloseAndLogIfError(ctx, rows, "selectBackwardExtremitiesForRoom: rows.close() failed")
|
||||
|
||||
for rows.Next() {
|
||||
var eID string
|
||||
if err = rows.Scan(&eID); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
eventIDs = append(eventIDs, eID)
|
||||
}
|
||||
|
||||
return eventIDs, rows.Err()
|
||||
}
|
||||
|
||||
func (s *backwardExtremitiesStatements) DeleteBackwardExtremity(
|
||||
ctx context.Context, txn *sql.Tx, roomID, knownEventID string,
|
||||
) (err error) {
|
||||
_, err = txn.Stmt(s.deleteBackwardExtremityStmt).ExecContext(ctx, roomID, knownEventID)
|
||||
return
|
||||
}
|
||||
@ -22,6 +22,7 @@ import (
|
||||
"strings"
|
||||
|
||||
"github.com/matrix-org/dendrite/common"
|
||||
"github.com/matrix-org/dendrite/syncapi/storage/tables"
|
||||
"github.com/matrix-org/dendrite/syncapi/types"
|
||||
"github.com/matrix-org/gomatrixserverlib"
|
||||
)
|
||||
@ -91,35 +92,37 @@ type currentRoomStateStatements struct {
|
||||
selectStateEventStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func (s *currentRoomStateStatements) prepare(db *sql.DB, streamID *streamIDStatements) (err error) {
|
||||
s.streamIDStatements = streamID
|
||||
_, err = db.Exec(currentRoomStateSchema)
|
||||
func NewSqliteCurrentRoomStateTable(db *sql.DB, streamID *streamIDStatements) (tables.CurrentRoomState, error) {
|
||||
s := ¤tRoomStateStatements{
|
||||
streamIDStatements: streamID,
|
||||
}
|
||||
_, err := db.Exec(currentRoomStateSchema)
|
||||
if err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.upsertRoomStateStmt, err = db.Prepare(upsertRoomStateSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.deleteRoomStateByEventIDStmt, err = db.Prepare(deleteRoomStateByEventIDSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectRoomIDsWithMembershipStmt, err = db.Prepare(selectRoomIDsWithMembershipSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectCurrentStateStmt, err = db.Prepare(selectCurrentStateSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectJoinedUsersStmt, err = db.Prepare(selectJoinedUsersSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectStateEventStmt, err = db.Prepare(selectStateEventSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
return
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// JoinedMemberLists returns a map of room ID to a list of joined user IDs.
|
||||
func (s *currentRoomStateStatements) selectJoinedUsers(
|
||||
func (s *currentRoomStateStatements) SelectJoinedUsers(
|
||||
ctx context.Context,
|
||||
) (map[string][]string, error) {
|
||||
rows, err := s.selectJoinedUsersStmt.QueryContext(ctx)
|
||||
@ -143,7 +146,7 @@ func (s *currentRoomStateStatements) selectJoinedUsers(
|
||||
}
|
||||
|
||||
// SelectRoomIDsWithMembership returns the list of room IDs which have the given user in the given membership state.
|
||||
func (s *currentRoomStateStatements) selectRoomIDsWithMembership(
|
||||
func (s *currentRoomStateStatements) SelectRoomIDsWithMembership(
|
||||
ctx context.Context,
|
||||
txn *sql.Tx,
|
||||
userID string,
|
||||
@ -168,7 +171,7 @@ func (s *currentRoomStateStatements) selectRoomIDsWithMembership(
|
||||
}
|
||||
|
||||
// CurrentState returns all the current state events for the given room.
|
||||
func (s *currentRoomStateStatements) selectCurrentState(
|
||||
func (s *currentRoomStateStatements) SelectCurrentState(
|
||||
ctx context.Context, txn *sql.Tx, roomID string,
|
||||
stateFilterPart *gomatrixserverlib.StateFilter,
|
||||
) ([]gomatrixserverlib.HeaderedEvent, error) {
|
||||
@ -189,7 +192,7 @@ func (s *currentRoomStateStatements) selectCurrentState(
|
||||
return rowsToEvents(rows)
|
||||
}
|
||||
|
||||
func (s *currentRoomStateStatements) deleteRoomStateByEventID(
|
||||
func (s *currentRoomStateStatements) DeleteRoomStateByEventID(
|
||||
ctx context.Context, txn *sql.Tx, eventID string,
|
||||
) error {
|
||||
stmt := common.TxStmt(txn, s.deleteRoomStateByEventIDStmt)
|
||||
@ -197,7 +200,7 @@ func (s *currentRoomStateStatements) deleteRoomStateByEventID(
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *currentRoomStateStatements) upsertRoomState(
|
||||
func (s *currentRoomStateStatements) UpsertRoomState(
|
||||
ctx context.Context, txn *sql.Tx,
|
||||
event gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition,
|
||||
) error {
|
||||
@ -231,7 +234,7 @@ func (s *currentRoomStateStatements) upsertRoomState(
|
||||
return err
|
||||
}
|
||||
|
||||
func (s *currentRoomStateStatements) selectEventsWithEventIDs(
|
||||
func (s *currentRoomStateStatements) SelectEventsWithEventIDs(
|
||||
ctx context.Context, txn *sql.Tx, eventIDs []string,
|
||||
) ([]types.StreamEvent, error) {
|
||||
iEventIDs := make([]interface{}, len(eventIDs))
|
||||
@ -264,7 +267,7 @@ func rowsToEvents(rows *sql.Rows) ([]gomatrixserverlib.HeaderedEvent, error) {
|
||||
return result, nil
|
||||
}
|
||||
|
||||
func (s *currentRoomStateStatements) selectStateEvent(
|
||||
func (s *currentRoomStateStatements) SelectStateEvent(
|
||||
ctx context.Context, roomID, evType, stateKey string,
|
||||
) (*gomatrixserverlib.HeaderedEvent, error) {
|
||||
stmt := s.selectStateEventStmt
|
||||
|
||||
@ -19,6 +19,7 @@ import (
|
||||
"database/sql"
|
||||
|
||||
"github.com/matrix-org/dendrite/common"
|
||||
"github.com/matrix-org/dendrite/syncapi/storage/tables"
|
||||
"github.com/matrix-org/dendrite/syncapi/types"
|
||||
"github.com/matrix-org/gomatrixserverlib"
|
||||
)
|
||||
@ -77,35 +78,36 @@ type outputRoomEventsTopologyStatements struct {
|
||||
selectEventIDsFromPositionStmt *sql.Stmt
|
||||
}
|
||||
|
||||
func (s *outputRoomEventsTopologyStatements) prepare(db *sql.DB) (err error) {
|
||||
_, err = db.Exec(outputRoomEventsTopologySchema)
|
||||
func NewSqliteTopologyTable(db *sql.DB) (tables.Topology, error) {
|
||||
s := &outputRoomEventsTopologyStatements{}
|
||||
_, err := db.Exec(outputRoomEventsTopologySchema)
|
||||
if err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.insertEventInTopologyStmt, err = db.Prepare(insertEventInTopologySQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectEventIDsInRangeASCStmt, err = db.Prepare(selectEventIDsInRangeASCSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectEventIDsInRangeDESCStmt, err = db.Prepare(selectEventIDsInRangeDESCSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectPositionInTopologyStmt, err = db.Prepare(selectPositionInTopologySQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectMaxPositionInTopologyStmt, err = db.Prepare(selectMaxPositionInTopologySQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
if s.selectEventIDsFromPositionStmt, err = db.Prepare(selectEventIDsFromPositionSQL); err != nil {
|
||||
return
|
||||
return nil, err
|
||||
}
|
||||
return
|
||||
return s, nil
|
||||
}
|
||||
|
||||
// insertEventInTopology inserts the given event in the room's topology, based
|
||||
// on the event's depth.
|
||||
func (s *outputRoomEventsTopologyStatements) insertEventInTopology(
|
||||
func (s *outputRoomEventsTopologyStatements) InsertEventInTopology(
|
||||
ctx context.Context, txn *sql.Tx, event *gomatrixserverlib.HeaderedEvent, pos types.StreamPosition,
|
||||
) (err error) {
|
||||
stmt := common.TxStmt(txn, s.insertEventInTopologyStmt)
|
||||
@ -118,7 +120,7 @@ func (s *outputRoomEventsTopologyStatements) insertEventInTopology(
|
||||
// selectEventIDsInRange selects the IDs of events which positions are within a
|
||||
// given range in a given room's topological order.
|
||||
// Returns an empty slice if no events match the given range.
|
||||
func (s *outputRoomEventsTopologyStatements) selectEventIDsInRange(
|
||||
func (s *outputRoomEventsTopologyStatements) SelectEventIDsInRange(
|
||||
ctx context.Context, txn *sql.Tx, roomID string,
|
||||
fromPos, toPos, toMicroPos types.StreamPosition,
|
||||
limit int, chronologicalOrder bool,
|
||||
@ -155,7 +157,7 @@ func (s *outputRoomEventsTopologyStatements) selectEventIDsInRange(
|
||||
|
||||
// selectPositionInTopology returns the position of a given event in the
|
||||
// topology of the room it belongs to.
|
||||
func (s *outputRoomEventsTopologyStatements) selectPositionInTopology(
|
||||
func (s *outputRoomEventsTopologyStatements) SelectPositionInTopology(
|
||||
ctx context.Context, txn *sql.Tx, eventID string,
|
||||
) (pos types.StreamPosition, spos types.StreamPosition, err error) {
|
||||
stmt := common.TxStmt(txn, s.selectPositionInTopologyStmt)
|
||||
@ -163,7 +165,7 @@ func (s *outputRoomEventsTopologyStatements) selectPositionInTopology(
|
||||
return
|
||||
}
|
||||
|
||||
func (s *outputRoomEventsTopologyStatements) selectMaxPositionInTopology(
|
||||
func (s *outputRoomEventsTopologyStatements) SelectMaxPositionInTopology(
|
||||
ctx context.Context, txn *sql.Tx, roomID string,
|
||||
) (pos types.StreamPosition, spos types.StreamPosition, err error) {
|
||||
stmt := common.TxStmt(txn, s.selectMaxPositionInTopologyStmt)
|
||||
@ -173,7 +175,7 @@ func (s *outputRoomEventsTopologyStatements) selectMaxPositionInTopology(
|
||||
|
||||
// selectEventIDsFromPosition returns the IDs of all events that have a given
|
||||
// position in the topology of a given room.
|
||||
func (s *outputRoomEventsTopologyStatements) selectEventIDsFromPosition(
|
||||
func (s *outputRoomEventsTopologyStatements) SelectEventIDsFromPosition(
|
||||
ctx context.Context, txn *sql.Tx, roomID string, pos types.StreamPosition,
|
||||
) (eventIDs []string, err error) {
|
||||
// Query the event IDs.
|
||||
|
||||
File diff suppressed because it is too large
Load Diff
@ -28,14 +28,14 @@ import (
|
||||
func NewSyncServerDatasource(dataSourceName string, dbProperties common.DbProperties) (Database, error) {
|
||||
uri, err := url.Parse(dataSourceName)
|
||||
if err != nil {
|
||||
return postgres.NewSyncServerDatasource(dataSourceName, dbProperties)
|
||||
return postgres.NewDatabase(dataSourceName, dbProperties)
|
||||
}
|
||||
switch uri.Scheme {
|
||||
case "postgres":
|
||||
return postgres.NewSyncServerDatasource(dataSourceName, dbProperties)
|
||||
return postgres.NewDatabase(dataSourceName, dbProperties)
|
||||
case "file":
|
||||
return sqlite3.NewSyncServerDatasource(dataSourceName)
|
||||
return sqlite3.NewDatabase(dataSourceName)
|
||||
default:
|
||||
return postgres.NewSyncServerDatasource(dataSourceName, dbProperties)
|
||||
return postgres.NewDatabase(dataSourceName, dbProperties)
|
||||
}
|
||||
}
|
||||
|
||||
@ -51,7 +51,7 @@ func MustCreateEvent(t *testing.T, roomID string, prevs []gomatrixserverlib.Head
|
||||
}
|
||||
|
||||
func MustCreateDatabase(t *testing.T) storage.Database {
|
||||
db, err := sqlite3.NewSyncServerDatasource("file::memory:")
|
||||
db, err := sqlite3.NewDatabase("file::memory:")
|
||||
if err != nil {
|
||||
t.Fatalf("NewSyncServerDatasource returned %s", err)
|
||||
}
|
||||
|
||||
@ -35,7 +35,7 @@ func NewSyncServerDatasource(
|
||||
case "postgres":
|
||||
return nil, fmt.Errorf("Cannot use postgres implementation")
|
||||
case "file":
|
||||
return sqlite3.NewSyncServerDatasource(dataSourceName)
|
||||
return sqlite3.NewDatabase(dataSourceName)
|
||||
default:
|
||||
return nil, fmt.Errorf("Cannot use postgres implementation")
|
||||
}
|
||||
|
||||
@ -1,175 +0,0 @@
|
||||
// Copyright 2020 The Matrix.org Foundation C.I.C.
|
||||
//
|
||||
// Licensed under the Apache License, Version 2.0 (the "License");
|
||||
// you may not use this file except in compliance with the License.
|
||||
// You may obtain a copy of the License at
|
||||
//
|
||||
// http://www.apache.org/licenses/LICENSE-2.0
|
||||
//
|
||||
// Unless required by applicable law or agreed to in writing, software
|
||||
// distributed under the License is distributed on an "AS IS" BASIS,
|
||||
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
||||
// See the License for the specific language governing permissions and
|
||||
// limitations under the License.
|
||||
|
||||
package tables
|
||||
|
||||
import (
|
||||
"context"
|
||||
"database/sql"
|
||||
|
||||
"github.com/matrix-org/dendrite/common"
|
||||
)
|
||||
|
||||
// BackwardsExtremitiesStatements contains the SQL statements to implement.
|
||||
// See BackwardsExtremities to see the parameter and response types.
|
||||
type BackwardsExtremitiesStatements interface {
|
||||
Schema() string
|
||||
InsertBackwardExtremity() string
|
||||
SelectBackwardExtremitiesForRoom() string
|
||||
DeleteBackwardExtremity() string
|
||||
}
|
||||
|
||||
type PostgresBackwardsExtremitiesStatements struct{}
|
||||
|
||||
func (s *PostgresBackwardsExtremitiesStatements) Schema() string {
|
||||
return `-- Stores output room events received from the roomserver.
|
||||
CREATE TABLE IF NOT EXISTS syncapi_backward_extremities (
|
||||
-- The 'room_id' key for the event.
|
||||
room_id TEXT NOT NULL,
|
||||
-- The event ID for the last known event. This is the backwards extremity.
|
||||
event_id TEXT NOT NULL,
|
||||
-- The prev_events for the last known event. This is used to update extremities.
|
||||
prev_event_id TEXT NOT NULL,
|
||||
|
||||
PRIMARY KEY(room_id, event_id, prev_event_id)
|
||||
);
|
||||
`
|
||||
}
|
||||
func (s *PostgresBackwardsExtremitiesStatements) InsertBackwardExtremity() string {
|
||||
return "" +
|
||||
"INSERT INTO syncapi_backward_extremities (room_id, event_id, prev_event_id)" +
|
||||
" VALUES ($1, $2, $3)" +
|
||||
" ON CONFLICT DO NOTHING"
|
||||
}
|
||||
func (s *PostgresBackwardsExtremitiesStatements) SelectBackwardExtremitiesForRoom() string {
|
||||
return "SELECT DISTINCT event_id FROM syncapi_backward_extremities WHERE room_id = $1"
|
||||
}
|
||||
func (s *PostgresBackwardsExtremitiesStatements) DeleteBackwardExtremity() string {
|
||||
return "DELETE FROM syncapi_backward_extremities WHERE room_id = $1 AND prev_event_id = $2"
|
||||
}
|
||||
|
||||
type SqliteBackwardsExtremitiesStatements struct{}
|
||||
|
||||
func (s *SqliteBackwardsExtremitiesStatements) Schema() string {
|
||||
return `-- Stores output room events received from the roomserver.
|
||||
CREATE TABLE IF NOT EXISTS syncapi_backward_extremities (
|
||||
-- The 'room_id' key for the event.
|
||||
room_id TEXT NOT NULL,
|
||||
-- The event ID for the last known event. This is the backwards extremity.
|
||||
event_id TEXT NOT NULL,
|
||||
-- The prev_events for the last known event. This is used to update extremities.
|
||||
prev_event_id TEXT NOT NULL,
|
||||
|
||||
PRIMARY KEY(room_id, event_id, prev_event_id)
|
||||
);
|
||||
`
|
||||
}
|
||||
|
||||
func (s *SqliteBackwardsExtremitiesStatements) InsertBackwardExtremity() string {
|
||||
return "" +
|
||||
"INSERT INTO syncapi_backward_extremities (room_id, event_id, prev_event_id)" +
|
||||
" VALUES ($1, $2, $3)" +
|
||||
" ON CONFLICT (room_id, event_id, prev_event_id) DO NOTHING"
|
||||
}
|
||||
|
||||
func (s *SqliteBackwardsExtremitiesStatements) SelectBackwardExtremitiesForRoom() string {
|
||||
return "" +
|
||||
"SELECT DISTINCT event_id FROM syncapi_backward_extremities WHERE room_id = $1"
|
||||
}
|
||||
|
||||
func (s *SqliteBackwardsExtremitiesStatements) DeleteBackwardExtremity() string {
|
||||
return "" +
|
||||
"DELETE FROM syncapi_backward_extremities WHERE room_id = $1 AND prev_event_id = $2"
|
||||
}
|
||||
|
||||
// BackwardsExtremities keeps track of backwards extremities for a room.
|
||||
// Backwards extremities are the earliest (DAG-wise) known events which we have
|
||||
// the entire event JSON. These event IDs are used in federation requests to fetch
|
||||
// even earlier events.
|
||||
//
|
||||
// We persist the previous event IDs as well, one per row, so when we do fetch even
|
||||
// earlier events we can simply delete rows which referenced it. Consider the graph:
|
||||
// A
|
||||
// | Event C has 1 prev_event ID: A.
|
||||
// B C
|
||||
// |___| Event D has 2 prev_event IDs: B and C.
|
||||
// |
|
||||
// D
|
||||
// The earliest known event we have is D, so this table has 2 rows.
|
||||
// A backfill request gives us C but not B. We delete rows where prev_event=C. This
|
||||
// still means that D is a backwards extremity as we do not have event B. However, event
|
||||
// C is *also* a backwards extremity at this point as we do not have event A. Later,
|
||||
// when we fetch event B, we delete rows where prev_event=B. This then removes D as
|
||||
// a backwards extremity because there are no more rows with event_id=B.
|
||||
type BackwardsExtremities struct {
|
||||
insertBackwardExtremityStmt *sql.Stmt
|
||||
selectBackwardExtremitiesForRoomStmt *sql.Stmt
|
||||
deleteBackwardExtremityStmt *sql.Stmt
|
||||
}
|
||||
|
||||
// NewBackwardsExtremities prepares the table
|
||||
func NewBackwardsExtremities(db *sql.DB, stmts BackwardsExtremitiesStatements) (table BackwardsExtremities, err error) {
|
||||
_, err = db.Exec(stmts.Schema())
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
if table.insertBackwardExtremityStmt, err = db.Prepare(stmts.InsertBackwardExtremity()); err != nil {
|
||||
return
|
||||
}
|
||||
if table.selectBackwardExtremitiesForRoomStmt, err = db.Prepare(stmts.SelectBackwardExtremitiesForRoom()); err != nil {
|
||||
return
|
||||
}
|
||||
if table.deleteBackwardExtremityStmt, err = db.Prepare(stmts.DeleteBackwardExtremity()); err != nil {
|
||||
return
|
||||
}
|
||||
return
|
||||
}
|
||||
|
||||
// InsertsBackwardExtremity inserts a new backwards extremity.
|
||||
func (s *BackwardsExtremities) InsertsBackwardExtremity(
|
||||
ctx context.Context, txn *sql.Tx, roomID, eventID string, prevEventID string,
|
||||
) (err error) {
|
||||
_, err = txn.Stmt(s.insertBackwardExtremityStmt).ExecContext(ctx, roomID, eventID, prevEventID)
|
||||
return
|
||||
}
|
||||
|
||||
// SelectBackwardExtremitiesForRoom retrieves all backwards extremities for the room.
|
||||
func (s *BackwardsExtremities) SelectBackwardExtremitiesForRoom(
|
||||
ctx context.Context, roomID string,
|
||||
) (eventIDs []string, err error) {
|
||||
rows, err := s.selectBackwardExtremitiesForRoomStmt.QueryContext(ctx, roomID)
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
defer common.CloseAndLogIfError(ctx, rows, "selectBackwardExtremitiesForRoom: rows.close() failed")
|
||||
|
||||
for rows.Next() {
|
||||
var eID string
|
||||
if err = rows.Scan(&eID); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
eventIDs = append(eventIDs, eID)
|
||||
}
|
||||
|
||||
return eventIDs, rows.Err()
|
||||
}
|
||||
|
||||
// DeleteBackwardExtremity removes a backwards extremity for a room, if one existed.
|
||||
func (s *BackwardsExtremities) DeleteBackwardExtremity(
|
||||
ctx context.Context, txn *sql.Tx, roomID, knownEventID string,
|
||||
) (err error) {
|
||||
_, err = txn.Stmt(s.deleteBackwardExtremityStmt).ExecContext(ctx, roomID, knownEventID)
|
||||
return
|
||||
}
|
||||
@ -30,3 +30,61 @@ type Events interface {
|
||||
SelectEarlyEvents(ctx context.Context, txn *sql.Tx, roomID string, fromPos, toPos types.StreamPosition, limit int) ([]types.StreamEvent, error)
|
||||
SelectEvents(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]types.StreamEvent, error)
|
||||
}
|
||||
|
||||
type Topology interface {
|
||||
// InsertEventInTopology inserts the given event in the room's topology, based
|
||||
// on the event's depth.
|
||||
InsertEventInTopology(ctx context.Context, txn *sql.Tx, event *gomatrixserverlib.HeaderedEvent, pos types.StreamPosition) (err error)
|
||||
// SelectEventIDsInRange selects the IDs of events which positions are within a
|
||||
// given range in a given room's topological order.
|
||||
// Returns an empty slice if no events match the given range.
|
||||
SelectEventIDsInRange(ctx context.Context, txn *sql.Tx, roomID string, fromPos, toPos, toMicroPos types.StreamPosition, limit int, chronologicalOrder bool) (eventIDs []string, err error)
|
||||
// SelectPositionInTopology returns the position of a given event in the
|
||||
// topology of the room it belongs to.
|
||||
SelectPositionInTopology(ctx context.Context, txn *sql.Tx, eventID string) (pos, spos types.StreamPosition, err error)
|
||||
SelectMaxPositionInTopology(ctx context.Context, txn *sql.Tx, roomID string) (pos types.StreamPosition, spos types.StreamPosition, err error)
|
||||
// SelectEventIDsFromPosition returns the IDs of all events that have a given
|
||||
// position in the topology of a given room.
|
||||
SelectEventIDsFromPosition(ctx context.Context, txn *sql.Tx, roomID string, pos types.StreamPosition) (eventIDs []string, err error)
|
||||
}
|
||||
|
||||
type CurrentRoomState interface {
|
||||
SelectStateEvent(ctx context.Context, roomID, evType, stateKey string) (*gomatrixserverlib.HeaderedEvent, error)
|
||||
SelectEventsWithEventIDs(ctx context.Context, txn *sql.Tx, eventIDs []string) ([]types.StreamEvent, error)
|
||||
UpsertRoomState(ctx context.Context, txn *sql.Tx, event gomatrixserverlib.HeaderedEvent, membership *string, addedAt types.StreamPosition) error
|
||||
DeleteRoomStateByEventID(ctx context.Context, txn *sql.Tx, eventID string) error
|
||||
// SelectCurrentState returns all the current state events for the given room.
|
||||
SelectCurrentState(ctx context.Context, txn *sql.Tx, roomID string, stateFilter *gomatrixserverlib.StateFilter) ([]gomatrixserverlib.HeaderedEvent, error)
|
||||
// SelectRoomIDsWithMembership returns the list of room IDs which have the given user in the given membership state.
|
||||
SelectRoomIDsWithMembership(ctx context.Context, txn *sql.Tx, userID string, membership string) ([]string, error)
|
||||
// SelectJoinedUsers returns a map of room ID to a list of joined user IDs.
|
||||
SelectJoinedUsers(ctx context.Context) (map[string][]string, error)
|
||||
}
|
||||
|
||||
// BackwardsExtremities keeps track of backwards extremities for a room.
|
||||
// Backwards extremities are the earliest (DAG-wise) known events which we have
|
||||
// the entire event JSON. These event IDs are used in federation requests to fetch
|
||||
// even earlier events.
|
||||
//
|
||||
// We persist the previous event IDs as well, one per row, so when we do fetch even
|
||||
// earlier events we can simply delete rows which referenced it. Consider the graph:
|
||||
// A
|
||||
// | Event C has 1 prev_event ID: A.
|
||||
// B C
|
||||
// |___| Event D has 2 prev_event IDs: B and C.
|
||||
// |
|
||||
// D
|
||||
// The earliest known event we have is D, so this table has 2 rows.
|
||||
// A backfill request gives us C but not B. We delete rows where prev_event=C. This
|
||||
// still means that D is a backwards extremity as we do not have event B. However, event
|
||||
// C is *also* a backwards extremity at this point as we do not have event A. Later,
|
||||
// when we fetch event B, we delete rows where prev_event=B. This then removes D as
|
||||
// a backwards extremity because there are no more rows with event_id=B.
|
||||
type BackwardsExtremities interface {
|
||||
// InsertsBackwardExtremity inserts a new backwards extremity.
|
||||
InsertsBackwardExtremity(ctx context.Context, txn *sql.Tx, roomID, eventID string, prevEventID string) (err error)
|
||||
// SelectBackwardExtremitiesForRoom retrieves all backwards extremities for the room.
|
||||
SelectBackwardExtremitiesForRoom(ctx context.Context, roomID string) (eventIDs []string, err error)
|
||||
// DeleteBackwardExtremity removes a backwards extremity for a room, if one existed.
|
||||
DeleteBackwardExtremity(ctx context.Context, txn *sql.Tx, roomID, knownEventID string) (err error)
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user