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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1 +1 @@ | ||
| lts/hydrogen | ||
| lts/iron |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| import { createClient, VercelKV } from "@vercel/kv"; | ||
| import { interfaces } from "@across-protocol/sdk"; | ||
|
|
||
| const { | ||
| KV_REST_API_READ_ONLY_TOKEN, | ||
| KV_REST_API_TOKEN, | ||
| KV_REST_API_URL, | ||
| UPSTASH_REDIS_REST_URL, | ||
| UPSTASH_REDIS_REST_TOKEN, | ||
| UPSTASH_REDIS_READ_ONLY_TOKEN, | ||
| } = process.env; | ||
| const isRedisCacheEnabled = | ||
| (KV_REST_API_URL && (KV_REST_API_TOKEN || KV_REST_API_READ_ONLY_TOKEN)) || | ||
| (UPSTASH_REDIS_REST_URL && | ||
| (UPSTASH_REDIS_REST_TOKEN || UPSTASH_REDIS_READ_ONLY_TOKEN)); | ||
|
|
||
| export class RedisCache implements interfaces.CachingMechanismInterface { | ||
| private client: VercelKV | undefined; | ||
|
|
||
| constructor() { | ||
| this.client = isRedisCacheEnabled | ||
| ? createClient({ | ||
| url: UPSTASH_REDIS_REST_URL || KV_REST_API_URL, | ||
| token: UPSTASH_REDIS_REST_TOKEN || KV_REST_API_TOKEN, | ||
| }) | ||
| : undefined; | ||
| } | ||
|
|
||
| async get<T>(key: string): Promise<T | null> { | ||
| if (!this.client) { | ||
| return null; | ||
| } | ||
|
|
||
| const value = await this.client.get(key); | ||
| if (value === null || value === undefined) { | ||
| return null; | ||
| } | ||
| return value as T; | ||
| } | ||
|
|
||
| async set<T>(key: string, value: T, ttl = 10): Promise<string | undefined> { | ||
| if (!this.client) { | ||
| return; | ||
| } | ||
|
|
||
| try { | ||
| if (typeof value === "string") { | ||
| try { | ||
| const parsedJson = JSON.parse(value); | ||
| value = parsedJson; | ||
| } catch (error) { | ||
| // Do nothing | ||
| } | ||
| } | ||
| await this.client.set(key, value, { | ||
| ex: ttl === Number.POSITIVE_INFINITY ? 60 : ttl, | ||
| }); | ||
| return key; | ||
| } catch (error) { | ||
| console.error("[RedisCache] Error while calling set:", error); | ||
| throw error; | ||
| } | ||
| } | ||
| } | ||
|
|
||
| export const redisCache = new RedisCache(); | ||
|
|
||
| export function buildCacheKey( | ||
| prefix: string, | ||
| ...args: (string | number)[] | ||
| ): string { | ||
| return `${prefix}:${args.join(":")}`; | ||
| } | ||
|
|
||
| export function buildInternalCacheKey(...args: (string | number)[]): string { | ||
| return buildCacheKey("QUOTES_API", ...args); | ||
| } | ||
|
|
||
| export async function getCachedValue<T>( | ||
| key: string, | ||
| ttl: number, | ||
| fetcher: () => Promise<T>, | ||
| parser?: (value: T) => T | ||
| ): Promise<T> { | ||
| const cachedValue = await redisCache.get<T>(key); | ||
| if (cachedValue) { | ||
| return parser ? parser(cachedValue) : cachedValue; | ||
| } | ||
|
|
||
| const value = await fetcher(); | ||
| await redisCache.set(key, value, ttl); | ||
| return value; | ||
| } | ||
|
|
||
| export function makeCacheGetterAndSetter<T>( | ||
| key: string, | ||
| ttl: number, | ||
| fetcher: () => Promise<T>, | ||
| parser?: (value: T) => T | ||
| ) { | ||
| return { | ||
| get: async () => { | ||
| return getCachedValue(key, ttl, fetcher, parser); | ||
| }, | ||
| set: async (value?: T) => { | ||
| if (!value) { | ||
| value = await fetcher(); | ||
| } | ||
| await redisCache.set(key, value, ttl); | ||
| }, | ||
| }; | ||
| } |
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