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refactor(api): replaces old learning content cache by new one
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7 changes: 3 additions & 4 deletions
7
api/src/shared/domain/usecases/init-learning-content-cache.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,3 @@ | ||
| const initLearningContentCache = async function ({ LearningContentCache }) { | ||
| await LearningContentCache.instance.get(); | ||
| }; | ||
| export { initLearningContentCache }; | ||
| export async function initLearningContentCache() { | ||
| // FIXME | ||
| } |
86 changes: 35 additions & 51 deletions
86
api/src/shared/infrastructure/caches/learning-content-cache.js
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,69 +1,53 @@ | ||
| import { config } from '../../config.js'; | ||
| import { lcmsClient } from '../lcms-client.js'; | ||
| import { DistributedCache } from './DistributedCache.js'; | ||
| import { InMemoryCache } from './InMemoryCache.js'; | ||
| import { LayeredCache } from './LayeredCache.js'; | ||
| import { RedisCache } from './RedisCache.js'; | ||
|
|
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| const LEARNING_CONTENT_CHANNEL = 'Learning content'; | ||
| const LEARNING_CONTENT_CACHE_KEY = 'LearningContent'; | ||
| import * as learningContentPubSub from '../caches/learning-content-pubsub.js'; | ||
|
|
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| export class LearningContentCache { | ||
| constructor(redisUrl) { | ||
| if (redisUrl) { | ||
| const distributedCache = new DistributedCache(new InMemoryCache(), redisUrl, LEARNING_CONTENT_CHANNEL); | ||
| const redisCache = new RedisCache(redisUrl); | ||
|
|
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| this._underlyingCache = new LayeredCache(distributedCache, redisCache); | ||
| } else { | ||
| this._underlyingCache = new InMemoryCache(); | ||
| } | ||
| this.generator = () => lcmsClient.getLatestRelease(); | ||
| } | ||
|
|
||
| get() { | ||
| return this._underlyingCache.get(LEARNING_CONTENT_CACHE_KEY, this.generator); | ||
| } | ||
| #map; | ||
| #pubSub; | ||
| #name; | ||
|
|
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| async reset() { | ||
| const object = await this.generator(); | ||
| return this._underlyingCache.set(LEARNING_CONTENT_CACHE_KEY, object); | ||
| } | ||
| /** | ||
| * @param {{ | ||
| * name: string | ||
| * pubSub: import('../caches/learning-content-pubsub.js').LearningContentPubSub | ||
| * map: Map | ||
| * }} config | ||
| * @returns | ||
| */ | ||
| constructor({ name, pubSub = learningContentPubSub.getPubSub(), map = new Map() }) { | ||
| this.#name = name; | ||
| this.#pubSub = pubSub; | ||
| this.#map = map; | ||
|
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| async update() { | ||
| const newLearningContent = await lcmsClient.createRelease(); | ||
| return this._underlyingCache.set(LEARNING_CONTENT_CACHE_KEY, newLearningContent); | ||
| this.#subscribe(); | ||
| } | ||
|
|
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| patch(patch) { | ||
| return this._underlyingCache.patch(LEARNING_CONTENT_CACHE_KEY, patch); | ||
| get(key) { | ||
| return this.#map.get(key); | ||
| } | ||
|
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| flushAll() { | ||
| return this._underlyingCache.flushAll(); | ||
| set(key, value) { | ||
| return this.#map.set(key, value); | ||
| } | ||
|
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| quit() { | ||
| return this._underlyingCache.quit(); | ||
| delete(key) { | ||
| return this.#pubSub.publish(this.#name, { type: 'delete', key }); | ||
| } | ||
|
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| /** @type {LearningContentCache} */ | ||
| static _instance = null; | ||
|
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| static defaultInstance() { | ||
| return new LearningContentCache(config.caching.redisUrl); | ||
| clear() { | ||
| return this.#pubSub.publish(this.#name, { type: 'clear' }); | ||
| } | ||
|
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| static get instance() { | ||
| if (!this._instance) { | ||
| this._instance = this.defaultInstance(); | ||
| async #subscribe() { | ||
| for await (const message of this.#pubSub.subscribe(this.#name)) { | ||
| if (message.type === 'clear') this.#map.clear(); | ||
| if (message.type === 'delete') this.#map.delete(this.message.key); | ||
| } | ||
| return this._instance; | ||
| } | ||
|
|
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| static set instance(_instance) { | ||
| this._instance = _instance; | ||
| console.log('POUET'); | ||
| } | ||
| } | ||
|
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| export const learningContentCache = LearningContentCache.instance; | ||
| export const learningContentCache = { | ||
| async quit() { | ||
| return learningContentPubSub.quit(); | ||
| }, | ||
| }; |
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