This commit is contained in:
syuilo
2022-09-19 03:11:50 +09:00
parent 92c78218bc
commit a2eac9fff6
82 changed files with 671 additions and 671 deletions

View File

@@ -7,24 +7,24 @@ import type { OnApplicationShutdown } from '@nestjs/common';
@Injectable()
export class MetaService implements OnApplicationShutdown {
#cache: Meta | undefined;
#intervalId: NodeJS.Timer;
private cache: Meta | undefined;
private intervalId: NodeJS.Timer;
constructor(
@Inject(DI.db)
private db: DataSource,
) {
if (process.env.NODE_ENV !== 'test') {
this.#intervalId = setInterval(() => {
this.intervalId = setInterval(() => {
this.fetch(true).then(meta => {
this.#cache = meta;
this.cache = meta;
});
}, 1000 * 10);
}
}
async fetch(noCache = false): Promise<Meta> {
if (!noCache && this.#cache) return this.#cache;
if (!noCache && this.cache) return this.cache;
return await this.db.transaction(async transactionalEntityManager => {
// 過去のバグでレコードが複数出来てしまっている可能性があるので新しいIDを優先する
@@ -37,7 +37,7 @@ export class MetaService implements OnApplicationShutdown {
const meta = metas[0];
if (meta) {
this.#cache = meta;
this.cache = meta;
return meta;
} else {
// metaが空のときfetchMetaが同時に呼ばれるとここが同時に呼ばれてしまうことがあるのでフェイルセーフなupsertを使う
@@ -51,13 +51,13 @@ export class MetaService implements OnApplicationShutdown {
)
.then((x) => transactionalEntityManager.findOneByOrFail(Meta, x.identifiers[0]));
this.#cache = saved;
this.cache = saved;
return saved;
}
});
}
public onApplicationShutdown(signal?: string | undefined) {
clearInterval(this.#intervalId);
clearInterval(this.intervalId);
}
}