0a71b02e04
NestJS (6 services): implement @RequirePermission decorator with SetMetadata+Reflector, register APP_GUARD globally, fix as assertions to type guards, add explicit return types, fix import type for express, fix /metrics implicit any, replace native Error with ApplicationError, remove typeorm remnants, register LifecycleService. teacher-bff: add logger, ApplicationError, GlobalErrorFilter, forward real userId to downstream, log downstream failures, migrate health controller to shared/health. Go (2 services): interface to any, doc comments, CORS dev whitelist, JWT secret fail-fast, push-gateway internal API auth, metrics and readyz endpoints, remove dead code. Python (2 services): lifespan return type, dev_mode to bool, data-ana APIRouter, ai POST body model, ClickHouse async wrapping.
46 lines
1.3 KiB
TypeScript
46 lines
1.3 KiB
TypeScript
import {
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Injectable,
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Logger,
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OnApplicationShutdown,
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OnModuleInit,
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} from "@nestjs/common";
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import { closeDb } from "../../config/database.js";
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const SERVICE_NAME = "classes";
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/**
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* 优雅停机服务。
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*
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* 信号处理由 NestJS 在 `app.listen` 之前调用 `app.enableShutdownHooks()`
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* 触发（SIGTERM / SIGINT），NestJS 会依次调用 OnApplicationShutdown 钩子。
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* K8s 配置 `terminationGracePeriodSeconds=60` 给予足够时间清理。
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*
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* Classes 服务仅使用 Drizzle ORM（MySQL），无 Kafka / Redis 依赖。
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* 关闭时仅需关闭数据库连接池。
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*/
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@Injectable()
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export class LifecycleService implements OnModuleInit, OnApplicationShutdown {
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private readonly logger = new Logger(LifecycleService.name);
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onModuleInit(): void {
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this.logger.log(`service ${SERVICE_NAME} module initialized`);
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}
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async onApplicationShutdown(signal?: string): Promise<void> {
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this.logger.log(
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`service ${SERVICE_NAME} shutting down (signal=${signal ?? "unknown"})`,
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);
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try {
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await closeDb();
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this.logger.log("database connection closed");
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} catch (error) {
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this.logger.error(
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`database close failed: ${error instanceof Error ? error.message : String(error)}`,
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);
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}
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this.logger.log(`service ${SERVICE_NAME} shutdown complete`);
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}
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}
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