Prevent threads code from making identical simultaneous API hits #3541
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* Drop support for Node 16 ([\matrix-org#3533](matrix-org#3533)). * Improve types around login, registration, UIA and identity servers ([\matrix-org#3537](matrix-org#3537)). * **The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (matrix-org#3189)** * Simplify `MatrixClient::setPowerLevel` API ([\matrix-org#3570](matrix-org#3570)). Fixes element-hq/element-web#13900 and matrix-org#1844. * Deprecate `VerificationRequest.getQRCodeBytes` and replace it with the asynchronous `generateQRCode`. ([\matrix-org#3562](matrix-org#3562)). * Deprecate `VerificationRequest.beginKeyVerification()` in favour of `VerificationRequest.startVerification()`. ([\matrix-org#3528](matrix-org#3528)). * Deprecate `Crypto.VerificationRequest` application event, replacing it with `Crypto.VerificationRequestReceived`. ([\matrix-org#3514](matrix-org#3514)). * Throw saner error when peeking has its room pulled out from under it ([\matrix-org#3577](matrix-org#3577)). Fixes element-hq/element-web#18679. * OIDC: Log in ([\matrix-org#3554](matrix-org#3554)). Contributed by @kerryarchibald. * Prevent threads code from making identical simultaneous API hits ([\matrix-org#3541](matrix-org#3541)). Fixes element-hq/element-web#25395. * Update IUnsigned type to be extensible ([\matrix-org#3547](matrix-org#3547)). * add stop() api to BackupManager for clean shutdown ([\matrix-org#3553](matrix-org#3553)). * Log the message ID of any undecryptable to-device messages ([\matrix-org#3543](matrix-org#3543)). * Ignore thread relations on state events for consistency with edits ([\matrix-org#3540](matrix-org#3540)). * OIDC: validate id token ([\matrix-org#3531](matrix-org#3531)). Contributed by @kerryarchibald. * Fix read receipt sending behaviour around thread roots ([\matrix-org#3600](matrix-org#3600)). * Fix `TypedEventEmitter::removeAllListeners(void)` not working ([\matrix-org#3561](matrix-org#3561)). * Don't allow Olm unwedging rate-limiting to race ([\matrix-org#3549](matrix-org#3549)). Fixes element-hq/element-web#25716. * Fix an instance of failed to decrypt error when an in flight `/keys/query` fails. ([\matrix-org#3486](matrix-org#3486)). * Use the right anchor emoji for SAS verification ([\matrix-org#3534](matrix-org#3534)). * fix a bug which caused the wrong emoji to be shown during SAS device verification. ([\matrix-org#3523](matrix-org#3523)).
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Fixes element-hq/element-web#25395
Currently the
fetchRootEventmethod would get called for each emit ofRoom.Timelinewhich meant if a thread was found with 10 events, we'd call/event/10 times. A lot of our tests seem to expect the/event/API being hammered which should have been a red flag much much earlier. This change doesn't fix all the issues with the Thread model (#3542 aims to do that) but helps avoid calling the init code paths multiple times (especially at the same time). The only time the init code path will be re-called is if the last event was redacted just to simplify the change. Perfect is the enemy of freaking hugely better.Here's what your changelog entry will look like:
✨ Features
GET /relationsandGET /event, with MSC3981 enabled and working element-hq/element-web#25395.