From 9542cb8d6253a93b06a68b9ac3647367f8f7354c Mon Sep 17 00:00:00 2001 From: tamaina Date: Mon, 4 Mar 2024 13:48:57 +0900 Subject: fix(backend): リモートサーバーの情報が更新できなくなっていた問題を修正 (#13507) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit * fix(backend): fetchInstanceMetadataのLockが永遠に解除されない問題を修正 Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com> * fix test * fix * comment * comment * improve test --------- Co-authored-by: まっちゃとーにゅ <17376330+u1-liquid@users.noreply.github.com> --- .../src/core/FetchInstanceMetadataService.ts | 28 ++++++++++++++++------ 1 file changed, 21 insertions(+), 7 deletions(-) (limited to 'packages/backend/src/core/FetchInstanceMetadataService.ts') diff --git a/packages/backend/src/core/FetchInstanceMetadataService.ts b/packages/backend/src/core/FetchInstanceMetadataService.ts index bc270bd28f..8d173855f3 100644 --- a/packages/backend/src/core/FetchInstanceMetadataService.ts +++ b/packages/backend/src/core/FetchInstanceMetadataService.ts @@ -51,21 +51,35 @@ export class FetchInstanceMetadataService { } @bindThis - public async tryLock(host: string): Promise { - const mutex = await this.redisClient.set(`fetchInstanceMetadata:mutex:${host}`, '1', 'GET'); - return mutex !== '1'; + // public for test + public async tryLock(host: string): Promise { + // TODO: マイグレーションなのであとで消す (2024.3.1) + this.redisClient.del(`fetchInstanceMetadata:mutex:${host}`); + + return await this.redisClient.set( + `fetchInstanceMetadata:mutex:v2:${host}`, '1', + 'EX', 30, // 30秒したら自動でロック解除 https://github.com/misskey-dev/misskey/issues/13506#issuecomment-1975375395 + 'GET' // 古い値を返す（なかったらnull） + ); } @bindThis - public unlock(host: string): Promise<'OK'> { - return this.redisClient.set(`fetchInstanceMetadata:mutex:${host}`, '0'); + // public for test + public unlock(host: string): Promise { + return this.redisClient.del(`fetchInstanceMetadata:mutex:v2:${host}`); } @bindThis public async fetchInstanceMetadata(instance: MiInstance, force = false): Promise { const host = instance.host; - // Acquire mutex to ensure no parallel runs - if (!await this.tryLock(host)) return; + + // finallyでunlockされてしまうのでtry内でロックチェックをしない + // （returnであってもfinallyは実行される） + if (!force && await this.tryLock(host) === '1') { + // 1が返ってきていたらロックされているという意味なので、何もしない + return; + } + try { if (!force) { const _instance = await this.federatedInstanceService.fetch(host); -- cgit v1.2.3-freya