35 lines
797 B
TypeScript
35 lines
797 B
TypeScript
import { Meta } from '../models/entities/meta';
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import { getConnection } from 'typeorm';
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let cache: Meta;
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export async function fetchMeta(noCache = false): Promise<Meta> {
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if (!noCache && cache) return cache;
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return await getConnection().transaction(async transactionalEntityManager => {
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// 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
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const meta = await transactionalEntityManager.findOne(Meta, {
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order: {
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id: 'DESC'
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}
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});
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if (meta) {
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cache = meta;
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return meta;
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} else {
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const saved = await transactionalEntityManager.save(Meta, {
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id: 'x'
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}) as Meta;
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cache = saved;
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return saved;
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}
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});
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}
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setInterval(() => {
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fetchMeta(true).then(meta => {
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cache = meta;
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});
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}, 5000);
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