misskey/packages/backend/src/core/AppLockService.ts
riku6460 8d06a6475e
chore: 著作権とライセンスについての情報を各ファイルに追加する (#141)
* chore: 著作権とライセンスについての情報を各ファイルに追加する

* chore: Add the SPDX information to each file

Add copyright and licensing information as defined in version 3.0 of
the REUSE Specification.

* tweak format

---------

Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>

* chore: Add SPDX-License-Identifier [skip ci]

* add missing SPDX-License-Identifier

* remove unused file

---------

Co-authored-by: Shun Sakai <sorairolake@protonmail.ch>
Co-authored-by: syuilo <Syuilotan@yahoo.co.jp>
Co-authored-by: Chocolate Pie <106949016+chocolate-pie@users.noreply.github.com>
2023-08-15 02:52:38 +09:00

45 lines
1.2 KiB
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and other misskey contributors
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { promisify } from 'node:util';
import { Inject, Injectable } from '@nestjs/common';
import redisLock from 'redis-lock';
import * as Redis from 'ioredis';
import { DI } from '@/di-symbols.js';
import { bindThis } from '@/decorators.js';
/**
* Retry delay (ms) for lock acquisition
*/
const retryDelay = 100;
@Injectable()
export class AppLockService {
private lock: (key: string, timeout?: number, _?: (() => Promise<void>) | undefined) => Promise<() => void>;
constructor(
@Inject(DI.redis)
private redisClient: Redis.Redis,
) {
this.lock = promisify(redisLock(this.redisClient, retryDelay));
}
/**
* Get AP Object lock
* @param uri AP object ID
* @param timeout Lock timeout (ms), The timeout releases previous lock.
* @returns Unlock function
*/
@bindThis
public getApLock(uri: string, timeout = 30 * 1000): Promise<() => void> {
return this.lock(`ap-object:${uri}`, timeout);
}
@bindThis
public getChartInsertLock(lockKey: string, timeout = 30 * 1000): Promise<() => void> {
return this.lock(`chart-insert:${lockKey}`, timeout);
}
}