24d8df664c
* Fix #897 and shuffle directory around * Update find-lint * goimports Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
197 lines
6.9 KiB
Go
197 lines
6.9 KiB
Go
// Copyright 2017-2018 New Vector Ltd
|
|
// Copyright 2019-2020 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 postgres
|
|
|
|
import (
|
|
"context"
|
|
"database/sql"
|
|
"errors"
|
|
|
|
"github.com/lib/pq"
|
|
"github.com/matrix-org/dendrite/internal"
|
|
"github.com/matrix-org/dendrite/roomserver/types"
|
|
"github.com/matrix-org/gomatrixserverlib"
|
|
)
|
|
|
|
const roomsSchema = `
|
|
CREATE SEQUENCE IF NOT EXISTS roomserver_room_nid_seq;
|
|
CREATE TABLE IF NOT EXISTS roomserver_rooms (
|
|
-- Local numeric ID for the room.
|
|
room_nid BIGINT PRIMARY KEY DEFAULT nextval('roomserver_room_nid_seq'),
|
|
-- Textual ID for the room.
|
|
room_id TEXT NOT NULL CONSTRAINT roomserver_room_id_unique UNIQUE,
|
|
-- The most recent events in the room that aren't referenced by another event.
|
|
-- This list may empty if the server hasn't joined the room yet.
|
|
-- (The server will be in that state while it stores the events for the initial state of the room)
|
|
latest_event_nids BIGINT[] NOT NULL DEFAULT '{}'::BIGINT[],
|
|
-- The last event written to the output log for this room.
|
|
last_event_sent_nid BIGINT NOT NULL DEFAULT 0,
|
|
-- The state of the room after the current set of latest events.
|
|
-- This will be 0 if there are no latest events in the room.
|
|
state_snapshot_nid BIGINT NOT NULL DEFAULT 0,
|
|
-- The version of the room, which will assist in determining the state resolution
|
|
-- algorithm, event ID format, etc.
|
|
room_version TEXT NOT NULL
|
|
);
|
|
`
|
|
|
|
// Same as insertEventTypeNIDSQL
|
|
const insertRoomNIDSQL = "" +
|
|
"INSERT INTO roomserver_rooms (room_id, room_version) VALUES ($1, $2)" +
|
|
" ON CONFLICT ON CONSTRAINT roomserver_room_id_unique" +
|
|
" DO NOTHING RETURNING (room_nid)"
|
|
|
|
const selectRoomNIDSQL = "" +
|
|
"SELECT room_nid FROM roomserver_rooms WHERE room_id = $1"
|
|
|
|
const selectLatestEventNIDsSQL = "" +
|
|
"SELECT latest_event_nids, state_snapshot_nid FROM roomserver_rooms WHERE room_nid = $1"
|
|
|
|
const selectLatestEventNIDsForUpdateSQL = "" +
|
|
"SELECT latest_event_nids, last_event_sent_nid, state_snapshot_nid FROM roomserver_rooms WHERE room_nid = $1 FOR UPDATE"
|
|
|
|
const updateLatestEventNIDsSQL = "" +
|
|
"UPDATE roomserver_rooms SET latest_event_nids = $2, last_event_sent_nid = $3, state_snapshot_nid = $4 WHERE room_nid = $1"
|
|
|
|
const selectRoomVersionForRoomIDSQL = "" +
|
|
"SELECT room_version FROM roomserver_rooms WHERE room_id = $1"
|
|
|
|
const selectRoomVersionForRoomNIDSQL = "" +
|
|
"SELECT room_version FROM roomserver_rooms WHERE room_nid = $1"
|
|
|
|
type roomStatements struct {
|
|
insertRoomNIDStmt *sql.Stmt
|
|
selectRoomNIDStmt *sql.Stmt
|
|
selectLatestEventNIDsStmt *sql.Stmt
|
|
selectLatestEventNIDsForUpdateStmt *sql.Stmt
|
|
updateLatestEventNIDsStmt *sql.Stmt
|
|
selectRoomVersionForRoomIDStmt *sql.Stmt
|
|
selectRoomVersionForRoomNIDStmt *sql.Stmt
|
|
}
|
|
|
|
func (s *roomStatements) prepare(db *sql.DB) (err error) {
|
|
_, err = db.Exec(roomsSchema)
|
|
if err != nil {
|
|
return
|
|
}
|
|
return statementList{
|
|
{&s.insertRoomNIDStmt, insertRoomNIDSQL},
|
|
{&s.selectRoomNIDStmt, selectRoomNIDSQL},
|
|
{&s.selectLatestEventNIDsStmt, selectLatestEventNIDsSQL},
|
|
{&s.selectLatestEventNIDsForUpdateStmt, selectLatestEventNIDsForUpdateSQL},
|
|
{&s.updateLatestEventNIDsStmt, updateLatestEventNIDsSQL},
|
|
{&s.selectRoomVersionForRoomIDStmt, selectRoomVersionForRoomIDSQL},
|
|
{&s.selectRoomVersionForRoomNIDStmt, selectRoomVersionForRoomNIDSQL},
|
|
}.prepare(db)
|
|
}
|
|
|
|
func (s *roomStatements) insertRoomNID(
|
|
ctx context.Context, txn *sql.Tx,
|
|
roomID string, roomVersion gomatrixserverlib.RoomVersion,
|
|
) (types.RoomNID, error) {
|
|
var roomNID int64
|
|
stmt := internal.TxStmt(txn, s.insertRoomNIDStmt)
|
|
err := stmt.QueryRowContext(ctx, roomID, roomVersion).Scan(&roomNID)
|
|
return types.RoomNID(roomNID), err
|
|
}
|
|
|
|
func (s *roomStatements) selectRoomNID(
|
|
ctx context.Context, txn *sql.Tx, roomID string,
|
|
) (types.RoomNID, error) {
|
|
var roomNID int64
|
|
stmt := internal.TxStmt(txn, s.selectRoomNIDStmt)
|
|
err := stmt.QueryRowContext(ctx, roomID).Scan(&roomNID)
|
|
return types.RoomNID(roomNID), err
|
|
}
|
|
|
|
func (s *roomStatements) selectLatestEventNIDs(
|
|
ctx context.Context, roomNID types.RoomNID,
|
|
) ([]types.EventNID, types.StateSnapshotNID, error) {
|
|
var nids pq.Int64Array
|
|
var stateSnapshotNID int64
|
|
stmt := s.selectLatestEventNIDsStmt
|
|
err := stmt.QueryRowContext(ctx, int64(roomNID)).Scan(&nids, &stateSnapshotNID)
|
|
if err != nil {
|
|
return nil, 0, err
|
|
}
|
|
eventNIDs := make([]types.EventNID, len(nids))
|
|
for i := range nids {
|
|
eventNIDs[i] = types.EventNID(nids[i])
|
|
}
|
|
return eventNIDs, types.StateSnapshotNID(stateSnapshotNID), nil
|
|
}
|
|
|
|
func (s *roomStatements) selectLatestEventsNIDsForUpdate(
|
|
ctx context.Context, txn *sql.Tx, roomNID types.RoomNID,
|
|
) ([]types.EventNID, types.EventNID, types.StateSnapshotNID, error) {
|
|
var nids pq.Int64Array
|
|
var lastEventSentNID int64
|
|
var stateSnapshotNID int64
|
|
stmt := internal.TxStmt(txn, s.selectLatestEventNIDsForUpdateStmt)
|
|
err := stmt.QueryRowContext(ctx, int64(roomNID)).Scan(&nids, &lastEventSentNID, &stateSnapshotNID)
|
|
if err != nil {
|
|
return nil, 0, 0, err
|
|
}
|
|
eventNIDs := make([]types.EventNID, len(nids))
|
|
for i := range nids {
|
|
eventNIDs[i] = types.EventNID(nids[i])
|
|
}
|
|
return eventNIDs, types.EventNID(lastEventSentNID), types.StateSnapshotNID(stateSnapshotNID), nil
|
|
}
|
|
|
|
func (s *roomStatements) updateLatestEventNIDs(
|
|
ctx context.Context,
|
|
txn *sql.Tx,
|
|
roomNID types.RoomNID,
|
|
eventNIDs []types.EventNID,
|
|
lastEventSentNID types.EventNID,
|
|
stateSnapshotNID types.StateSnapshotNID,
|
|
) error {
|
|
stmt := internal.TxStmt(txn, s.updateLatestEventNIDsStmt)
|
|
_, err := stmt.ExecContext(
|
|
ctx,
|
|
roomNID,
|
|
eventNIDsAsArray(eventNIDs),
|
|
int64(lastEventSentNID),
|
|
int64(stateSnapshotNID),
|
|
)
|
|
return err
|
|
}
|
|
|
|
func (s *roomStatements) selectRoomVersionForRoomID(
|
|
ctx context.Context, txn *sql.Tx, roomID string,
|
|
) (gomatrixserverlib.RoomVersion, error) {
|
|
var roomVersion gomatrixserverlib.RoomVersion
|
|
stmt := internal.TxStmt(txn, s.selectRoomVersionForRoomIDStmt)
|
|
err := stmt.QueryRowContext(ctx, roomID).Scan(&roomVersion)
|
|
if err == sql.ErrNoRows {
|
|
return roomVersion, errors.New("room not found")
|
|
}
|
|
return roomVersion, err
|
|
}
|
|
|
|
func (s *roomStatements) selectRoomVersionForRoomNID(
|
|
ctx context.Context, txn *sql.Tx, roomNID types.RoomNID,
|
|
) (gomatrixserverlib.RoomVersion, error) {
|
|
var roomVersion gomatrixserverlib.RoomVersion
|
|
stmt := internal.TxStmt(txn, s.selectRoomVersionForRoomNIDStmt)
|
|
err := stmt.QueryRowContext(ctx, roomNID).Scan(&roomVersion)
|
|
if err == sql.ErrNoRows {
|
|
return roomVersion, errors.New("room not found")
|
|
}
|
|
return roomVersion, err
|
|
}
|