initial commit

fluxer_api/src/middleware/RequestCacheMiddleware.ts

@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+import {createMiddleware} from 'hono/factory';
+import type {HonoEnv} from '~/App';
+import type {UserPartialResponse} from '~/user/UserModel';
+
+export interface RequestCache {
+	userPartials: Map<bigint, UserPartialResponse>;
+	clear(): void;
+}
+
+class RequestCacheImpl implements RequestCache {
+	userPartials = new Map<bigint, UserPartialResponse>();
+
+	clear(): void {
+		this.userPartials.clear();
+	}
+}
+
+export const RequestCacheMiddleware = createMiddleware<HonoEnv>(async (ctx, next) => {
+	const requestCache: RequestCache = new RequestCacheImpl();
+	ctx.set('requestCache', requestCache);
+	try {
+		await next();
+	} finally {
+		requestCache.clear();
+	}
+});
+
+export function createRequestCache(): RequestCache {
+	return new RequestCacheImpl();
+}