mirror of
https://github.com/matrix-org/dendrite.git
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229 lines
7 KiB
Go
229 lines
7 KiB
Go
// Copyright 2017-2018 New Vector Ltd
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// Copyright 2019-2020 The Matrix.org Foundation C.I.C.
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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 sqlite3
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import (
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"context"
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"database/sql"
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"strings"
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"github.com/matrix-org/dendrite/federationapi/types"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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"github.com/matrix-org/gomatrixserverlib"
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)
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const joinedHostsSchema = `
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-- The joined_hosts table stores a list of m.room.member event ids in the
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-- current state for each room where the membership is "join".
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-- There will be an entry for every user that is joined to the room.
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CREATE TABLE IF NOT EXISTS federationsender_joined_hosts (
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-- The string ID of the room.
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room_id TEXT NOT NULL,
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-- The event ID of the m.room.member join event.
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event_id TEXT NOT NULL,
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-- The domain part of the user ID the m.room.member event is for.
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server_name TEXT NOT NULL
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);
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CREATE UNIQUE INDEX IF NOT EXISTS federatonsender_joined_hosts_event_id_idx
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ON federationsender_joined_hosts (event_id);
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CREATE INDEX IF NOT EXISTS federatonsender_joined_hosts_room_id_idx
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ON federationsender_joined_hosts (room_id)
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`
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const insertJoinedHostsSQL = "" +
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"INSERT OR IGNORE INTO federationsender_joined_hosts (room_id, event_id, server_name)" +
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" VALUES ($1, $2, $3)"
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const deleteJoinedHostsSQL = "" +
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"DELETE FROM federationsender_joined_hosts WHERE event_id = $1"
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const deleteJoinedHostsForRoomSQL = "" +
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"DELETE FROM federationsender_joined_hosts WHERE room_id = $1"
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const selectJoinedHostsSQL = "" +
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"SELECT event_id, server_name FROM federationsender_joined_hosts" +
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" WHERE room_id = $1"
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const selectAllJoinedHostsSQL = "" +
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"SELECT DISTINCT server_name FROM federationsender_joined_hosts"
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const selectJoinedHostsForRoomsSQL = "" +
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"SELECT DISTINCT server_name FROM federationsender_joined_hosts WHERE room_id IN ($1)"
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const selectJoinedHostsForRoomsExcludingBlacklistedSQL = "" +
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"SELECT DISTINCT server_name FROM federationsender_joined_hosts j WHERE room_id IN ($1) AND NOT EXISTS (" +
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" SELECT server_name FROM federationsender_blacklist WHERE j.server_name = server_name" +
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");"
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type joinedHostsStatements struct {
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db *sql.DB
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insertJoinedHostsStmt *sql.Stmt
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deleteJoinedHostsStmt *sql.Stmt
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deleteJoinedHostsForRoomStmt *sql.Stmt
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selectJoinedHostsStmt *sql.Stmt
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selectAllJoinedHostsStmt *sql.Stmt
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// selectJoinedHostsForRoomsStmt *sql.Stmt - prepared at runtime due to variadic
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// selectJoinedHostsForRoomsExcludingBlacklistedStmt *sql.Stmt - prepared at runtime due to variadic
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}
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func NewSQLiteJoinedHostsTable(db *sql.DB) (s *joinedHostsStatements, err error) {
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s = &joinedHostsStatements{
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db: db,
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}
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_, err = db.Exec(joinedHostsSchema)
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if err != nil {
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return
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}
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if s.insertJoinedHostsStmt, err = db.Prepare(insertJoinedHostsSQL); err != nil {
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return
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}
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if s.deleteJoinedHostsStmt, err = db.Prepare(deleteJoinedHostsSQL); err != nil {
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return
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}
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if s.deleteJoinedHostsForRoomStmt, err = s.db.Prepare(deleteJoinedHostsForRoomSQL); err != nil {
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return
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}
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if s.selectJoinedHostsStmt, err = db.Prepare(selectJoinedHostsSQL); err != nil {
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return
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}
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if s.selectAllJoinedHostsStmt, err = db.Prepare(selectAllJoinedHostsSQL); err != nil {
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return
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}
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return
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}
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func (s *joinedHostsStatements) InsertJoinedHosts(
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ctx context.Context,
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txn *sql.Tx,
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roomID, eventID string,
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serverName gomatrixserverlib.ServerName,
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) error {
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stmt := sqlutil.TxStmt(txn, s.insertJoinedHostsStmt)
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_, err := stmt.ExecContext(ctx, roomID, eventID, serverName)
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return err
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}
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func (s *joinedHostsStatements) DeleteJoinedHosts(
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ctx context.Context, txn *sql.Tx, eventIDs []string,
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) error {
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for _, eventID := range eventIDs {
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stmt := sqlutil.TxStmt(txn, s.deleteJoinedHostsStmt)
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if _, err := stmt.ExecContext(ctx, eventID); err != nil {
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return err
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}
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}
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return nil
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}
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func (s *joinedHostsStatements) DeleteJoinedHostsForRoom(
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ctx context.Context, txn *sql.Tx, roomID string,
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) error {
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stmt := sqlutil.TxStmt(txn, s.deleteJoinedHostsForRoomStmt)
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_, err := stmt.ExecContext(ctx, roomID)
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return err
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}
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func (s *joinedHostsStatements) SelectJoinedHostsWithTx(
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ctx context.Context, txn *sql.Tx, roomID string,
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) ([]types.JoinedHost, error) {
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stmt := sqlutil.TxStmt(txn, s.selectJoinedHostsStmt)
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return joinedHostsFromStmt(ctx, stmt, roomID)
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}
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func (s *joinedHostsStatements) SelectJoinedHosts(
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ctx context.Context, roomID string,
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) ([]types.JoinedHost, error) {
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return joinedHostsFromStmt(ctx, s.selectJoinedHostsStmt, roomID)
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}
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func (s *joinedHostsStatements) SelectAllJoinedHosts(
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ctx context.Context,
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) ([]gomatrixserverlib.ServerName, error) {
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rows, err := s.selectAllJoinedHostsStmt.QueryContext(ctx)
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if err != nil {
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return nil, err
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}
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defer internal.CloseAndLogIfError(ctx, rows, "selectAllJoinedHosts: rows.close() failed")
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var result []gomatrixserverlib.ServerName
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for rows.Next() {
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var serverName string
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if err = rows.Scan(&serverName); err != nil {
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return nil, err
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}
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result = append(result, gomatrixserverlib.ServerName(serverName))
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}
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return result, rows.Err()
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}
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func (s *joinedHostsStatements) SelectJoinedHostsForRooms(
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ctx context.Context, roomIDs []string, excludingBlacklisted bool,
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) ([]gomatrixserverlib.ServerName, error) {
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iRoomIDs := make([]interface{}, len(roomIDs))
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for i := range roomIDs {
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iRoomIDs[i] = roomIDs[i]
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}
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query := selectJoinedHostsForRoomsSQL
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if excludingBlacklisted {
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query = selectJoinedHostsForRoomsExcludingBlacklistedSQL
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}
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sql := strings.Replace(query, "($1)", sqlutil.QueryVariadic(len(iRoomIDs)), 1)
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rows, err := s.db.QueryContext(ctx, sql, iRoomIDs...)
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if err != nil {
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return nil, err
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}
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defer internal.CloseAndLogIfError(ctx, rows, "selectJoinedHostsForRoomsStmt: rows.close() failed")
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var result []gomatrixserverlib.ServerName
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for rows.Next() {
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var serverName string
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if err = rows.Scan(&serverName); err != nil {
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return nil, err
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}
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result = append(result, gomatrixserverlib.ServerName(serverName))
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}
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return result, rows.Err()
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}
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func joinedHostsFromStmt(
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ctx context.Context, stmt *sql.Stmt, roomID string,
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) ([]types.JoinedHost, error) {
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rows, err := stmt.QueryContext(ctx, roomID)
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if err != nil {
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return nil, err
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}
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defer internal.CloseAndLogIfError(ctx, rows, "joinedHostsFromStmt: rows.close() failed")
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var result []types.JoinedHost
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for rows.Next() {
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var eventID, serverName string
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if err = rows.Scan(&eventID, &serverName); err != nil {
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return nil, err
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}
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result = append(result, types.JoinedHost{
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MemberEventID: eventID,
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ServerName: gomatrixserverlib.ServerName(serverName),
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})
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}
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return result, nil
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}
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