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24 changes: 18 additions & 6 deletions
24
back/src/adapters/primary/scripts/updateAllPEAgenciesFromPeAgencyReferential.ts
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62 changes: 0 additions & 62 deletions
62
back/src/adapters/secondary/core/CachingAccessTokenGateway.ts
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52 changes: 52 additions & 0 deletions
52
back/src/adapters/secondary/core/InMemoryCachingGateway.ts
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,52 @@ | ||
| import { addSeconds } from "date-fns"; | ||
| import isAfter from "date-fns/isAfter"; | ||
| import { TimeGateway } from "../../../domain/core/ports/TimeGateway"; | ||
| import { RealTimeGateway } from "./TimeGateway/RealTimeGateway"; | ||
|
|
||
| export class InMemoryCachingGateway<T> { | ||
| public constructor( | ||
| private readonly timeGateway: TimeGateway = new RealTimeGateway(), | ||
| private responseExpireInSecondsProp: keyof T, | ||
| ) {} | ||
|
|
||
| public async caching( | ||
| value: string, | ||
| onCacheMiss: () => Promise<T>, | ||
| ): Promise<T> { | ||
| const cache = this.cache[value]; | ||
| return cache === undefined || this.isExpired(await cache) | ||
| ? this.onBadCache(value, onCacheMiss) | ||
| : (await cache).response; | ||
| } | ||
|
|
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| private onBadCache(value: string, onCacheMiss: () => Promise<T>): Promise<T> { | ||
| this.cache[value] = this.refreshCache(onCacheMiss); | ||
| return this.caching(value, onCacheMiss); | ||
| } | ||
|
|
||
| private async refreshCache( | ||
| onCacheMiss: () => Promise<T>, | ||
| ): Promise<CacheEntry<T>> { | ||
| const response = await onCacheMiss(); | ||
| return { | ||
| response, | ||
| expirationTime: addSeconds( | ||
| this.timeGateway.now(), | ||
| Number(response[this.responseExpireInSecondsProp]) - | ||
| this.minimumCacheLifetime || 0, | ||
| ), | ||
| }; | ||
| } | ||
|
|
||
| private isExpired(entry: CacheEntry<T>): boolean { | ||
| return isAfter(this.timeGateway.now(), entry.expirationTime); | ||
| } | ||
|
|
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| private readonly cache: Partial<Record<string, Promise<CacheEntry<T>>>> = {}; | ||
| private readonly minimumCacheLifetime = 30; | ||
| } | ||
|
|
||
| type CacheEntry<T> = { | ||
| response: T; | ||
| expirationTime: Date; | ||
| }; |
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