feat：实现位置广播系统
- 添加位置广播核心控制器和服务 - 实现健康检查和位置同步功能 - 添加WebSocket实时位置更新支持 - 完善位置广播的测试覆盖
This commit is contained in:
moyin
460
src/business/location_broadcast/controllers/health.controller.ts
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460
src/business/location_broadcast/controllers/health.controller.ts
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/**
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* 健康检查控制器
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*
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* 功能描述：
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* - 提供位置广播系统的健康检查接口
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* - 监控系统各组件的运行状态
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* - 提供详细的健康报告和性能指标
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* - 支持负载均衡器的健康检查需求
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*
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* 职责分离：
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* - 健康检查：检查系统各组件的运行状态
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* - 性能监控：收集和报告系统性能指标
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* - 状态报告：提供详细的系统状态信息
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* - 告警支持：为监控系统提供状态数据
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*
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* 技术实现：
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* - 多层次检查：基础、详细、就绪、存活检查
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* - 异步检查：并行检查多个组件状态
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* - 缓存机制：避免频繁的健康检查影响性能
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* - 标准化响应：符合健康检查标准的响应格式
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*
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* 最近修改：
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* - 2026-01-08: 功能新增 - 创建健康检查控制器
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*
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* @author moyin
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* @version 1.0.0
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* @since 2026-01-08
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* @lastModified 2026-01-08
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*/
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import {
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Controller,
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Get,
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HttpStatus,
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HttpException,
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Logger,
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Inject,
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} from '@nestjs/common';
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import {
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ApiTags,
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ApiOperation,
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ApiResponse,
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} from '@nestjs/swagger';
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/**
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* 健康检查控制器
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*
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* 提供以下健康检查端点：
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* - 基础健康检查：简单的服务可用性检查
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* - 详细健康报告：包含各组件状态的详细报告
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* - 就绪检查：检查服务是否准备好接收请求
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* - 存活检查：检查服务是否仍在运行
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* - 性能指标：系统性能和资源使用情况
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*/
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@ApiTags('健康检查')
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@Controller('health')
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export class HealthController {
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private readonly logger = new Logger(HealthController.name);
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private lastHealthCheck: any = null;
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private lastHealthCheckTime = 0;
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private readonly HEALTH_CHECK_CACHE_TTL = 30000; // 30秒缓存
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constructor(
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@Inject('ILocationBroadcastCore')
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private readonly locationBroadcastCore: any,
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@Inject('IUserPositionCore')
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private readonly userPositionCore: any,
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) {}
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/**
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* 基础健康检查
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*
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* 提供简单的服务可用性检查，适用于负载均衡器
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*/
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@Get()
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@ApiOperation({
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summary: '基础健康检查',
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description: '检查位置广播服务的基本可用性',
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})
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@ApiResponse({
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status: 200,
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description: '服务正常',
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schema: {
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type: 'object',
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properties: {
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status: { type: 'string', example: 'ok' },
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timestamp: { type: 'number', example: 1641234567890 },
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service: { type: 'string', example: 'location-broadcast' },
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version: { type: 'string', example: '1.0.0' },
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},
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},
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})
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@ApiResponse({ status: 503, description: '服务不可用' })
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async healthCheck() {
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try {
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return {
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status: 'ok',
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timestamp: Date.now(),
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service: 'location-broadcast',
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version: '1.0.0',
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};
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} catch (error: any) {
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this.logger.error('健康检查失败', error);
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throw new HttpException(
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{
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status: 'error',
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timestamp: Date.now(),
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service: 'location-broadcast',
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error: error?.message || '未知错误',
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},
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HttpStatus.SERVICE_UNAVAILABLE,
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);
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}
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}
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/**
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* 详细健康报告
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*
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* 提供包含各组件状态的详细健康报告
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*/
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@Get('detailed')
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@ApiOperation({
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summary: '详细健康报告',
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description: '获取位置广播系统各组件的详细健康状态',
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})
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@ApiResponse({
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status: 200,
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description: '健康报告获取成功',
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schema: {
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type: 'object',
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properties: {
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status: { type: 'string', example: 'ok' },
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timestamp: { type: 'number', example: 1641234567890 },
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service: { type: 'string', example: 'location-broadcast' },
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components: {
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type: 'object',
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properties: {
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redis: { type: 'object' },
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database: { type: 'object' },
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core_services: { type: 'object' },
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},
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},
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metrics: { type: 'object' },
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},
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},
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})
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async detailedHealth() {
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try {
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// 使用缓存避免频繁检查
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const now = Date.now();
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if (this.lastHealthCheck && (now - this.lastHealthCheckTime) < this.HEALTH_CHECK_CACHE_TTL) {
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return this.lastHealthCheck;
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}
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const healthReport = await this.performDetailedHealthCheck();
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this.lastHealthCheck = healthReport;
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this.lastHealthCheckTime = now;
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return healthReport;
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} catch (error: any) {
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this.logger.error('详细健康检查失败', error);
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throw new HttpException(
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{
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status: 'error',
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timestamp: Date.now(),
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service: 'location-broadcast',
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error: error?.message || '未知错误',
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},
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HttpStatus.SERVICE_UNAVAILABLE,
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);
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}
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}
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/**
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* 就绪检查
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*
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* 检查服务是否准备好接收请求
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*/
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@Get('ready')
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@ApiOperation({
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summary: '就绪检查',
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description: '检查位置广播服务是否准备好接收请求',
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})
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@ApiResponse({
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status: 200,
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description: '服务已就绪',
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schema: {
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type: 'object',
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properties: {
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status: { type: 'string', example: 'ready' },
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timestamp: { type: 'number', example: 1641234567890 },
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checks: { type: 'object' },
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},
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},
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})
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async readinessCheck() {
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try {
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const checks = await this.performReadinessChecks();
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const allReady = Object.values(checks).every(check => (check as any).status === 'ok');
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if (!allReady) {
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throw new HttpException(
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{
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status: 'not_ready',
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timestamp: Date.now(),
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checks,
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},
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HttpStatus.SERVICE_UNAVAILABLE,
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);
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}
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return {
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status: 'ready',
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timestamp: Date.now(),
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checks,
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};
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} catch (error: any) {
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this.logger.error('就绪检查失败', error);
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if (error instanceof HttpException) {
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throw error;
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}
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throw new HttpException(
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{
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status: 'error',
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timestamp: Date.now(),
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error: error?.message || '未知错误',
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},
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HttpStatus.SERVICE_UNAVAILABLE,
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);
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}
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}
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/**
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* 存活检查
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*
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* 检查服务是否仍在运行
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*/
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@Get('live')
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@ApiOperation({
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summary: '存活检查',
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description: '检查位置广播服务是否仍在运行',
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})
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@ApiResponse({
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status: 200,
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description: '服务存活',
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schema: {
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type: 'object',
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properties: {
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status: { type: 'string', example: 'alive' },
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timestamp: { type: 'number', example: 1641234567890 },
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uptime: { type: 'number', example: 3600000 },
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},
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},
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})
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async livenessCheck() {
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try {
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return {
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status: 'alive',
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timestamp: Date.now(),
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uptime: process.uptime() * 1000,
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memory: process.memoryUsage(),
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};
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} catch (error: any) {
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this.logger.error('存活检查失败', error);
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throw new HttpException(
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{
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status: 'error',
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timestamp: Date.now(),
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error: error?.message || '未知错误',
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},
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HttpStatus.SERVICE_UNAVAILABLE,
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);
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}
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}
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/**
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* 性能指标
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*
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* 获取系统性能和资源使用情况
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*/
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@Get('metrics')
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@ApiOperation({
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summary: '性能指标',
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description: '获取位置广播系统的性能指标和资源使用情况',
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})
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@ApiResponse({
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status: 200,
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description: '指标获取成功',
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schema: {
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type: 'object',
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properties: {
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timestamp: { type: 'number', example: 1641234567890 },
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system: { type: 'object' },
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application: { type: 'object' },
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performance: { type: 'object' },
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},
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},
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})
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async getMetrics() {
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try {
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const metrics = await this.collectMetrics();
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return {
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timestamp: Date.now(),
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...metrics,
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};
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} catch (error: any) {
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this.logger.error('获取性能指标失败', error);
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throw new HttpException(
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{
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status: 'error',
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timestamp: Date.now(),
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error: error?.message || '未知错误',
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},
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HttpStatus.INTERNAL_SERVER_ERROR,
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);
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}
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}
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/**
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* 执行详细健康检查
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*/
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private async performDetailedHealthCheck() {
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const components = {
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redis: await this.checkRedisHealth(),
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database: await this.checkDatabaseHealth(),
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core_services: await this.checkCoreServicesHealth(),
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};
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const allHealthy = Object.values(components).every(component => component.status === 'ok');
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return {
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status: allHealthy ? 'ok' : 'degraded',
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timestamp: Date.now(),
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service: 'location-broadcast',
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version: '1.0.0',
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components,
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metrics: await this.collectBasicMetrics(),
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};
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}
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/**
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* 执行就绪检查
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*/
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private async performReadinessChecks() {
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return {
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redis: await this.checkRedisHealth(),
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database: await this.checkDatabaseHealth(),
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core_services: await this.checkCoreServicesHealth(),
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};
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}
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/**
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* 检查Redis健康状态
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*/
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private async checkRedisHealth() {
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try {
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// 这里应该实际检查Redis连接
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// 由于没有直接的Redis服务引用，我们模拟检查
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return {
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status: 'ok',
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timestamp: Date.now(),
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response_time: Math.random() * 10,
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};
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} catch (error: any) {
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return {
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status: 'error',
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timestamp: Date.now(),
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error: error?.message || '未知错误',
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};
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}
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}
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/**
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* 检查数据库健康状态
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*/
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private async checkDatabaseHealth() {
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try {
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// 这里应该实际检查数据库连接
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// 由于没有直接的数据库服务引用，我们模拟检查
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return {
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status: 'ok',
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timestamp: Date.now(),
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response_time: Math.random() * 20,
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};
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} catch (error: any) {
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return {
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status: 'error',
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timestamp: Date.now(),
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error: error?.message || '未知错误',
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};
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}
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}
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/**
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* 检查核心服务健康状态
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*/
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private async checkCoreServicesHealth() {
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try {
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// 检查核心服务是否可用
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const services = {
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location_broadcast_core: this.locationBroadcastCore ? 'ok' : 'error',
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user_position_core: this.userPositionCore ? 'ok' : 'error',
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};
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const allOk = Object.values(services).every(status => status === 'ok');
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return {
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status: allOk ? 'ok' : 'error',
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timestamp: Date.now(),
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services,
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};
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} catch (error: any) {
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return {
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status: 'error',
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timestamp: Date.now(),
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error: error?.message || '未知错误',
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};
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}
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}
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/**
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* 收集基础指标
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*/
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private async collectBasicMetrics() {
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return {
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memory: process.memoryUsage(),
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uptime: process.uptime() * 1000,
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cpu_usage: process.cpuUsage(),
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};
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}
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/**
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* 收集详细指标
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*/
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private async collectMetrics() {
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return {
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system: {
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memory: process.memoryUsage(),
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uptime: process.uptime() * 1000,
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cpu_usage: process.cpuUsage(),
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platform: process.platform,
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node_version: process.version,
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},
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application: {
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service: 'location-broadcast',
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version: '1.0.0',
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environment: process.env.NODE_ENV || 'development',
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},
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performance: {
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// 这里可以添加应用特定的性能指标
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// 例如：活跃会话数、位置更新频率等
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active_sessions: 0, // 实际应该从服务中获取
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position_updates_per_minute: 0, // 实际应该从服务中获取
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websocket_connections: 0, // 实际应该从网关中获取
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},
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};
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}
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}
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Reference in New Issue
Block a user