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Merge pull request #6028 from matrix-org/gsouquet/do-not-decrypt-breadcrumb

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Do not eagerly decrypt breadcrumb rooms
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Germain 2021-05-13 17:22:45 +01:00 committed by GitHub
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1 changed files with 0 additions and 26 deletions
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26
src/stores/BreadcrumbsStore.ts
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@ -16,14 +16,12 @@ limitations under the License.
import SettingsStore from "../settings/SettingsStore";
import { Room } from "matrix-js-sdk/src/models/room";
import { EventType } from "matrix-js-sdk/src/@types/event";
import { ActionPayload } from "../dispatcher/payloads";
import { AsyncStoreWithClient } from "./AsyncStoreWithClient";
import defaultDispatcher from "../dispatcher/dispatcher";
import { arrayHasDiff } from "../utils/arrays";
import { isNullOrUndefined } from "matrix-js-sdk/src/utils";
import { SettingLevel } from "../settings/SettingLevel";
import { MatrixClientPeg } from '../MatrixClientPeg';
const MAX_ROOMS = 20; // arbitrary
const AUTOJOIN_WAIT_THRESHOLD_MS = 90000; // 90s, the time we wait for an autojoined room to show up
@ -61,30 +59,6 @@ export class BreadcrumbsStore extends AsyncStoreWithClient<IState> {
return this.matrixClient && this.matrixClient.getVisibleRooms().length >= 20;
}
componentDidUpdate(prevProps, prevState) {
const prevRoomCount = (prevState.rooms?.length || 0);
const currentRoomCount = (this.state.rooms?.length || 0)
// Only decrypting the breadcrumb rooms events on app initialisation
// when room count transitions from 0 to the number of rooms it contains
if (prevRoomCount === 0 && currentRoomCount > prevRoomCount) {
const client = MatrixClientPeg.get();
// Rooms in the breadcrumb have a good chance to be interacted with
// again by a user. Decrypting the messages ahead of time will help
// reduce content shift on first render
this.state.rooms?.forEach(async room => {
const [cryptoEvent] = room.currentState.getStateEvents(EventType.RoomEncryption);
if (cryptoEvent) {
if (!client.isRoomEncrypted(room.roomId)) {
// XXX: Private member access
await client._crypto.onCryptoEvent(cryptoEvent);
}
room?.decryptAllEvents();
}
});
}
}
protected async onAction(payload: ActionPayload) {
if (!this.matrixClient) return;