perf(backend): make some features optionable

Resolve #11064
Resolve #11065

4 files changed, 50 insertions, 4 deletions

diff --git a/packages/backend/src/server/ServerService.ts b/packages/backend/src/server/ServerService.ts
index c3d45e4ad6..1bae71617b 100644
--- a/packages/backend/src/server/ServerService.ts
+++ b/packages/backend/src/server/ServerService.ts
@@ -16,6 +16,7 @@ import { createTemp } from '@/misc/create-temp.js';
 import { UserEntityService } from '@/core/entities/UserEntityService.js';
 import { LoggerService } from '@/core/LoggerService.js';
 import { bindThis } from '@/decorators.js';
+import { MetaService } from '@/core/MetaService.js';
 import { ActivityPubServerService } from './ActivityPubServerService.js';
 import { NodeinfoServerService } from './NodeinfoServerService.js';
 import { ApiServerService } from './api/ApiServerService.js';
@@ -45,6 +46,7 @@ export class ServerService implements OnApplicationShutdown {
 		@Inject(DI.emojisRepository)
 		private emojisRepository: EmojisRepository,
 
+		private metaService: MetaService,
 		private userEntityService: UserEntityService,
 		private apiServerService: ApiServerService,
 		private openApiServerService: OpenApiServerService,
@@ -161,11 +163,16 @@ export class ServerService implements OnApplicationShutdown {
 		});
 
 		fastify.get<{ Params: { x: string } }>('/identicon/:x', async (request, reply) => {
-			const [temp, cleanup] = await createTemp();
-			await genIdenticon(request.params.x, fs.createWriteStream(temp));
 			reply.header('Content-Type', 'image/png');
 			reply.header('Cache-Control', 'public, max-age=86400');
-			return fs.createReadStream(temp).on('close', () => cleanup());
+
+			if ((await this.metaService.fetch()).enableIdenticonGeneration) {
+				const [temp, cleanup] = await createTemp();
+				await genIdenticon(request.params.x, fs.createWriteStream(temp));
+				return fs.createReadStream(temp).on('close', () => cleanup());
+			} else {
+				return reply.redirect('/static-assets/avatar.png');
+			}
 		});
 
 		fastify.get<{ Params: { code: string } }>('/verify-email/:code', async (request, reply) => {
@@ -224,7 +231,7 @@ export class ServerService implements OnApplicationShutdown {
 
 	@bindThis
 	public async dispose(): Promise<void> {
-    await this.streamingApiServerService.detach();
+		await this.streamingApiServerService.detach();
 		await this.#fastify.close();
 	}
 
diff --git a/packages/backend/src/server/api/endpoints/admin/meta.ts b/packages/backend/src/server/api/endpoints/admin/meta.ts
index 4cc1b6011f..28aec7a090 100644
--- a/packages/backend/src/server/api/endpoints/admin/meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/meta.ts
@@ -262,6 +262,14 @@ export const meta = {
 				type: 'boolean',
 				optional: false, nullable: false,
 			},
+			enableServerMachineStats: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
+			enableIdenticonGeneration: {
+				type: 'boolean',
+				optional: false, nullable: false,
+			},
 			policies: {
 				type: 'object',
 				optional: false, nullable: false,
@@ -364,6 +372,8 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				enableActiveEmailValidation: instance.enableActiveEmailValidation,
 				enableChartsForRemoteUser: instance.enableChartsForRemoteUser,
 				enableChartsForFederatedInstances: instance.enableChartsForFederatedInstances,
+				enableServerMachineStats: instance.enableServerMachineStats,
+				enableIdenticonGeneration: instance.enableIdenticonGeneration,
 				policies: { ...DEFAULT_POLICIES, ...instance.policies },
 			};
 		});
diff --git a/packages/backend/src/server/api/endpoints/admin/update-meta.ts b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
index 1de5e9efd3..5c9d8e3fac 100644
--- a/packages/backend/src/server/api/endpoints/admin/update-meta.ts
+++ b/packages/backend/src/server/api/endpoints/admin/update-meta.ts
@@ -96,6 +96,8 @@ export const paramDef = {
 		enableActiveEmailValidation: { type: 'boolean' },
 		enableChartsForRemoteUser: { type: 'boolean' },
 		enableChartsForFederatedInstances: { type: 'boolean' },
+		enableServerMachineStats: { type: 'boolean' },
+		enableIdenticonGeneration: { type: 'boolean' },
 		serverRules: { type: 'array', items: { type: 'string' } },
 		preservedUsernames: { type: 'array', items: { type: 'string' } },
 	},
@@ -399,6 +401,14 @@ export default class extends Endpoint<typeof meta, typeof paramDef> {
 				set.enableChartsForFederatedInstances = ps.enableChartsForFederatedInstances;
 			}
 
+			if (ps.enableServerMachineStats !== undefined) {
+				set.enableServerMachineStats = ps.enableServerMachineStats;
+			}
+
+			if (ps.enableIdenticonGeneration !== undefined) {
+				set.enableIdenticonGeneration = ps.enableIdenticonGeneration;
+			}
+
 			if (ps.serverRules !== undefined) {
 				set.serverRules = ps.serverRules;
 			}
diff --git a/packages/backend/src/server/api/endpoints/server-info.ts b/packages/backend/src/server/api/endpoints/server-info.ts
index 1620e8ae52..552441e430 100644
--- a/packages/backend/src/server/api/endpoints/server-info.ts
+++ b/packages/backend/src/server/api/endpoints/server-info.ts
@@ -2,9 +2,12 @@ import * as os from 'node:os';
 import si from 'systeminformation';
 import { Injectable } from '@nestjs/common';
 import { Endpoint } from '@/server/api/endpoint-base.js';
+import { MetaService } from '@/core/MetaService.js';
 
 export const meta = {
 	requireCredential: false,
+	allowGet: true,
+	cacheSec: 60 * 1,
 
 	tags: ['meta'],
 } as const;
@@ -19,8 +22,24 @@ export const paramDef = {
 @Injectable()
 export default class extends Endpoint<typeof meta, typeof paramDef> {
 	constructor(
+		private metaService: MetaService,
 	) {
 		super(meta, paramDef, async () => {
+			if (!(await this.metaService.fetch()).enableServerMachineStats) return {
+				machine: '?',
+				cpu: {
+					model: '?',
+					cores: 0,
+				},
+				mem: {
+					total: 0,
+				},
+				fs: {
+					total: 0,
+					used: 0,
+				},
+			};
+
 			const memStats = await si.mem();
 			const fsStats = await si.fsSize();