element-web/src/RoomAliasCache.ts
Michael Telatynski 8fa3d7e4b7
Fix room joining over federation not specifying vias or using aliases (#30641)
* Fix room joining over federation not specifying vias or using aliases

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Be consistent with viaServers

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Simplify modules

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Only consider canAskToJoin on 403 as per spec

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Remove unused helper which I only just added =(

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Update tests

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Add tests

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Add test

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

* Add tests

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>

---------

Signed-off-by: Michael Telatynski <7t3chguy@gmail.com>
2025-09-02 11:10:10 +00:00

30 lines
1.1 KiB
TypeScript

/*
Copyright 2024 New Vector Ltd.
Copyright 2019-2021 The Matrix.org Foundation C.I.C.
SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only OR LicenseRef-Element-Commercial
Please see LICENSE files in the repository root for full details.
*/
type CacheResult = { roomId: string; viaServers: string[] };
/**
* This is meant to be a cache of room alias to room ID so that moving between
* rooms happens smoothly (for example using browser back / forward buttons).
*
* For the moment, it's in memory only and so only applies for the current
* session for simplicity, but could be extended further in the future.
*
* A similar thing could also be achieved via `pushState` with a state object,
* but keeping it separate like this seems easier in case we do want to extend.
*/
const cache = new Map<string, CacheResult>();
export function storeRoomAliasInCache(alias: string, roomId: string, viaServers: string[]): void {
cache.set(alias, { roomId, viaServers });
}
export function getCachedRoomIdForAlias(alias: string): CacheResult | undefined {
return cache.get(alias);
}