init app resources

app/src/adapter/cloudflare/drivers/cache.ts

@@ -0,0 +1,45 @@
+import type { ICacheDriver } from "core/drivers";
+
+interface WorkersKVCacheOptions {
+   // default time-to-live in seconds
+   defaultTTL?: number;
+   // prefix for the cache key
+   cachePrefix?: string;
+}
+
+export class WorkersKVCacheDriver implements ICacheDriver {
+   protected readonly kv: KVNamespace;
+   protected readonly defaultTTL?: number;
+   protected readonly cachePrefix: string;
+
+   constructor(kv: KVNamespace, options: WorkersKVCacheOptions = {}) {
+      this.kv = kv;
+      this.cachePrefix = options.cachePrefix ?? "";
+      this.defaultTTL = options.defaultTTL;
+   }
+
+   protected getKey(key: string): string {
+      return this.cachePrefix + key;
+   }
+
+   async get(key: string): Promise<string | undefined> {
+      const value = await this.kv.get(this.getKey(key));
+      return value === null ? undefined : value;
+   }
+
+   async set(key: string, value: string, ttl?: number): Promise<void> {
+      let expirationTtl = ttl ?? this.defaultTTL;
+      if (expirationTtl) {
+         expirationTtl = Math.max(expirationTtl, 60);
+      }
+      await this.kv.put(this.getKey(key), value, { expirationTtl: expirationTtl });
+   }
+
+   async del(key: string): Promise<void> {
+      await this.kv.delete(this.getKey(key));
+   }
+}
+
+export const cacheWorkersKV = (kv: KVNamespace, options?: WorkersKVCacheOptions) => {
+   return new WorkersKVCacheDriver(kv, options);
+};

app/src/adapter/cloudflare/drivers/cache.vitest.ts

@@ -0,0 +1,34 @@
+import { describe, vi, afterAll, beforeAll } from "vitest";
+import { cacheWorkersKV } from "./cache";
+import { viTestRunner } from "adapter/node/vitest";
+import { cacheDriverTestSuite } from "core/drivers/cache/cache-driver-test-suite";
+import { Miniflare } from "miniflare";
+
+describe("cacheWorkersKV", async () => {
+   beforeAll(() => {
+      vi.useFakeTimers();
+   });
+   afterAll(() => {
+      vi.restoreAllMocks();
+   });
+
+   const mf = new Miniflare({
+      modules: true,
+      script: "export default { async fetch() { return new Response(null); } }",
+      kvNamespaces: ["KV"],
+   });
+
+   const kv = (await mf.getKVNamespace("KV")) as unknown as KVNamespace;
+
+   cacheDriverTestSuite(viTestRunner, {
+      makeCache: () => cacheWorkersKV(kv),
+      setTime: (ms: number) => {
+         vi.advanceTimersByTime(ms);
+      },
+      options: {
+         minTTL: 60,
+         // doesn't work with miniflare
+         skipTTL: true,
+      },
+   });
+});