566060fade
- 5 NestJS services add /metrics endpoint via app.getHttpAdapter() - prometheus.yml scales to 8 services with rule_files and alertmanager - monitoring compose replaces blackbox with Loki+Promtail - Grafana datasource adds Loki - docker-compose.deploy.yml scales to 11 services - deploy.env.example completes Neo4j/ES/ClickHouse/LLM vars - teacher-bff adds health.controller - CI removes continue-on-error on lint step - teacher-portal lint script changed to eslint src
55 lines
1.8 KiB
TypeScript
55 lines
1.8 KiB
TypeScript
import "reflect-metadata";
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import { NestFactory } from "@nestjs/core";
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import { AppModule } from "./app.module.js";
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import { GlobalErrorFilter } from "./shared/errors/global-error.filter.js";
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import { initTracer, shutdownTracer } from "./shared/observability/tracer.js";
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import { env } from "./config/env.js";
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import { closeDb } from "./config/database.js";
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import { closeNeo4j } from "./config/neo4j.js";
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import { logger } from "./shared/observability/logger.js";
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import { metricsRegistry } from "./shared/observability/metrics.js";
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async function bootstrap(): Promise<void> {
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initTracer();
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const app = await NestFactory.create(AppModule, {
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logger: ["log", "error", "warn"],
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});
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app.useGlobalFilters(new GlobalErrorFilter());
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app.enableShutdownHooks();
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// Prometheus 指标端点：不鉴权，供 Prometheus 抓取。
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// 返回 register.metrics()（Promise<string>，含 Content-Type text/plain; version=0.0.4; charset=utf-8）。
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app.getHttpAdapter().get("/metrics", async (req, res) => {
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res.set("Content-Type", metricsRegistry.contentType);
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res.end(await metricsRegistry.metrics());
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});
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await app.listen(env.PORT);
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logger.info({ port: env.PORT }, "Content service started");
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process.on("SIGTERM", async () => {
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logger.info("SIGTERM received, shutting down gracefully...");
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await closeNeo4j();
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await closeDb();
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await shutdownTracer();
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await app.close();
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process.exit(0);
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});
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process.on("SIGINT", async () => {
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logger.info("SIGINT received, shutting down gracefully...");
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await closeNeo4j();
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await closeDb();
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await shutdownTracer();
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await app.close();
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process.exit(0);
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});
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}
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bootstrap().catch((err: unknown) => {
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logger.error({ err }, "Failed to start content service");
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process.exit(1);
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});
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