refactor(server): make redis required module (#9121)

packages/backend/server/src/base/redis/config.ts

@@ -0,0 +1,11 @@
+import { RedisOptions } from 'ioredis';
+
+import { defineStartupConfig, ModuleConfig } from '../../base/config';
+
+declare module '../config' {
+  interface AppConfig {
+    redis: ModuleConfig<RedisOptions>;
+  }
+}
+
+defineStartupConfig('redis', {});

packages/backend/server/src/base/redis/index.ts

@@ -0,0 +1,14 @@
+import './config';
+
+import { Global, Module } from '@nestjs/common';
+
+import { CacheRedis, SessionRedis, SocketIoRedis } from './instances';
+
+@Global()
+@Module({
+  providers: [CacheRedis, SessionRedis, SocketIoRedis],
+  exports: [CacheRedis, SessionRedis, SocketIoRedis],
+})
+export class RedisModule {}
+
+export { CacheRedis, SessionRedis, SocketIoRedis };

packages/backend/server/src/base/redis/instances.ts

@@ -0,0 +1,35 @@
+import { Injectable, OnModuleDestroy } from '@nestjs/common';
+import { Redis as IORedis, RedisOptions } from 'ioredis';
+
+import { Config } from '../../base/config';
+
+class Redis extends IORedis implements OnModuleDestroy {
+  constructor(opts: RedisOptions) {
+    super(opts);
+  }
+
+  onModuleDestroy() {
+    this.disconnect();
+  }
+}
+
+@Injectable()
+export class CacheRedis extends Redis {
+  constructor(config: Config) {
+    super(config.redis);
+  }
+}
+
+@Injectable()
+export class SessionRedis extends Redis {
+  constructor(config: Config) {
+    super({ ...config.redis, db: (config.redis.db ?? 0) + 2 });
+  }
+}
+
+@Injectable()
+export class SocketIoRedis extends Redis {
+  constructor(config: Config) {
+    super({ ...config.redis, db: (config.redis.db ?? 0) + 3 });
+  }
+}