30 lines
693 B
JavaScript
30 lines
693 B
JavaScript
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const FPersist = require('fpersist');
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const KeyTimeout = require('./key_timeout.js');
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module.exports = class FileSystemCache {
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constructor(options = {}) {
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this.ttl = options.ttl;
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this.keyTimeout = new KeyTimeout();
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const cacheDirectory = options.cacheDirectory || '.cache';
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this.cache = new FPersist(cacheDirectory);
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}
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get(key) {
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return this.cache.getItem(key);
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}
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remove(key) {
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this.keyTimeout.clearTimeout(key);
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return this.cache.deleteItem(key);
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}
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async set(key, value) {
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await this.cache.setItem(key, value);
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if (typeof this.ttl === 'number') {
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this.keyTimeout.updateTimeout(key, this.ttl, () => this.remove(key));
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}
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}
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};
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