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Deal with race in a better way

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RMidhunSuresh 2023-02-02 18:39:19 +05:30
parent de57e07982
commit 09e67ec21c
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1 changed files with 16 additions and 16 deletions
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20
src/matrix/Session.js
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@ -132,7 +132,6 @@ export class Session {
this._createRoomEncryption = this._createRoomEncryption.bind(this);
this._forgetArchivedRoom = this._forgetArchivedRoom.bind(this);
this.needsKeyBackup = new ObservableValue(false);
this._pendingObserveCalls = [];
}
get fingerprintKey() {
@ -797,8 +796,6 @@ export class Session {
// now all the collections are updated, update the room status
// so any listeners to the status will find the collections
// completely up to date
await Promise.all(this._pendingObserveCalls);
this._pendingObserveCalls = [];
if (this._observedRoomStatus.size !== 0) {
for (const ars of archivedRoomStates) {
if (ars.shouldAdd) {
@ -941,22 +938,25 @@ export class Session {
}
async observeRoomStatus(roomId) {
const op = async () => {
let observable = this._observedRoomStatus.get(roomId);
if (!observable) {
const status = await this.getRoomStatus(roomId);
let status = undefined;
// Create and set the observable with value = undefined, so that
// we don't loose any sync changes that come in while we are busy
// calculating the current room status.
observable = new RetainedObservableValue(status, () => {
this._observedRoomStatus.delete(roomId);
});
this._observedRoomStatus.set(roomId, observable);
status = await this.getRoomStatus(roomId);
// If observable.value is not undefined anymore, then some
// change has come through the sync.
if (observable.get() === undefined) {
observable.set(status);
}
}
return observable;
}
const promise = op();
this._pendingObserveCalls.push(promise);
return await promise;
}
observeRoomState(roomStateHandler) {
return this._roomStateHandler.subscribe(roomStateHandler);