feat(platform): Implement platform infrastructure with cloud-native support
- Add storage service (LocalAdapter + OSSAdapter stub) - Add database connection pool with graceful shutdown - Add logging system with winston (JSON format) - Add environment config management - Add async job queue (MemoryQueue + DatabaseQueue stub) - Add cache service (MemoryCache + RedisCache stub) - Add health check endpoints for SAE - Add monitoring metrics for DB, memory, API Key Features: - Zero-code switching between local and cloud environments - Adapter pattern for multi-environment support - Backward compatible with legacy modules - Ready for Aliyun Serverless deployment Related: Platform Infrastructure Planning (docs/09-鏋舵瀯瀹炴柦/04-骞冲彴鍩虹璁炬柦瑙勫垝.md)
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# 平台基础设施(Platform Infrastructure)
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> **版本:** V1.0
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> **创建日期:** 2025-11-17
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> **状态:** ✅ 实施完成
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---
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## 📋 概述
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平台基础设施提供了一套通用的、云原生的基础能力,支持**本地开发**和**云端部署**无缝切换。
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**核心设计原则:适配器模式(Adapter Pattern)**
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所有业务模块(ASL、AIA、PKB等)都应该使用这些平台能力,而不是重复实现。
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---
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## 🏗️ 模块清单
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| 模块 | 路径 | 状态 | 说明 |
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|------|------|------|------|
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| **存储服务** | `common/storage/` | ✅ 完成 | 文件上传下载(本地/OSS) |
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| **数据库连接池** | `config/database.ts` | ✅ 完成 | Prisma连接池配置 |
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| **日志系统** | `common/logging/` | ✅ 完成 | 结构化日志(JSON) |
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| **环境配置** | `config/env.ts` | ✅ 完成 | 统一配置管理 |
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| **异步任务** | `common/jobs/` | ✅ 完成 | 长时间任务异步处理 |
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| **缓存服务** | `common/cache/` | ✅ 完成 | 内存/Redis缓存 |
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| **健康检查** | `common/health/` | ✅ 完成 | SAE健康检查端点 |
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| **监控指标** | `common/monitoring/` | ✅ 完成 | 关键指标监控 |
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---
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## 📦 依赖安装
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在使用之前,需要安装必需的依赖:
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```bash
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# 进入backend目录
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cd backend
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# 安装winston日志库
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npm install winston
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npm install -D @types/winston
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```
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**可选依赖(云端部署时安装):**
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```bash
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# 阿里云OSS(当STORAGE_TYPE=oss时)
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npm install ali-oss
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npm install -D @types/ali-oss
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# Redis(当CACHE_TYPE=redis时)
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npm install ioredis
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npm install -D @types/ioredis
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```
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---
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## 🚀 快速开始
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### 1. 存储服务
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```typescript
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import { storage } from '@/common/storage'
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// 上传文件
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const buffer = await readFile('example.pdf')
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const url = await storage.upload('literature/123.pdf', buffer)
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// 下载文件
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const data = await storage.download('literature/123.pdf')
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// 删除文件
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await storage.delete('literature/123.pdf')
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```
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**环境切换:**
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```bash
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# 本地开发
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STORAGE_TYPE=local
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# 云端部署
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STORAGE_TYPE=oss
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OSS_REGION=oss-cn-hangzhou
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OSS_BUCKET=aiclinical-prod
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OSS_ACCESS_KEY_ID=your-key-id
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OSS_ACCESS_KEY_SECRET=your-key-secret
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```
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---
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### 2. 日志系统
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```typescript
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import { logger } from '@/common/logging'
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// 基础日志
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logger.info('User logged in', { userId: 123 })
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logger.error('Database error', { error: err.message })
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// 带上下文的日志
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const aslLogger = logger.child({ module: 'ASL', projectId: 456 })
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aslLogger.info('Screening started', { count: 100 })
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```
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**输出格式:**
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- 本地开发:彩色可读格式
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- 生产环境:JSON格式(便于阿里云SLS解析)
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---
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### 3. 异步任务
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```typescript
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import { jobQueue } from '@/common/jobs'
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// 创建任务(立即返回)
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const job = await jobQueue.push('asl:screening', {
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projectId: 123,
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literatureIds: [1, 2, 3]
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})
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// 返回任务ID给前端
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res.send({ jobId: job.id })
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// 注册处理函数
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jobQueue.process('asl:screening', async (job) => {
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for (const id of job.data.literatureIds) {
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await processLiterature(id)
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await jobQueue.updateProgress(job.id, ...)
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}
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return { success: true }
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})
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// 查询任务状态
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const status = await jobQueue.getJob(job.id)
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```
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---
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### 4. 缓存服务
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```typescript
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import { cache } from '@/common/cache'
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// 缓存用户数据(5分钟)
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await cache.set('user:123', userData, 60 * 5)
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const user = await cache.get<User>('user:123')
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// 缓存LLM响应(1小时)
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const cacheKey = `llm:${model}:${hash(prompt)}`
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const cached = await cache.get(cacheKey)
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if (!cached) {
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const response = await llm.chat(prompt)
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await cache.set(cacheKey, response, 60 * 60)
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}
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```
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**环境切换:**
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```bash
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# 本地开发
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CACHE_TYPE=memory
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# 云端部署
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CACHE_TYPE=redis
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REDIS_HOST=r-xxx.redis.aliyuncs.com
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REDIS_PORT=6379
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REDIS_PASSWORD=your-password
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```
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---
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### 5. 数据库连接
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```typescript
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import { prisma } from '@/config/database'
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// 直接使用(已配置连接池)
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const users = await prisma.user.findMany()
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// 获取连接数(监控用)
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import { getDatabaseConnectionCount } from '@/config/database'
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const count = await getDatabaseConnectionCount()
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```
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**云原生配置:**
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```bash
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DATABASE_URL=postgresql://user:pass@host:5432/db
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DB_MAX_CONNECTIONS=400 # RDS最大连接数
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MAX_INSTANCES=20 # SAE最大实例数
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```
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---
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### 6. 健康检查
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```typescript
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import { registerHealthRoutes } from '@/common/health'
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// 注册路由(在应用启动时)
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await registerHealthRoutes(app)
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```
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**端点:**
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- `GET /health/liveness` - SAE存活检查
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- `GET /health/readiness` - SAE就绪检查
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- `GET /health` - 详细健康检查(开发用)
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---
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### 7. 监控指标
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```typescript
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import { Metrics, requestTimingHook, responseTimingHook } from '@/common/monitoring'
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// 注册中间件(自动记录API响应时间)
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app.addHook('onRequest', requestTimingHook)
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app.addHook('onResponse', responseTimingHook)
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// 启动定期监控
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Metrics.startPeriodicMonitoring(60000) // 每分钟
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// 手动记录指标
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await Metrics.recordDBConnectionCount()
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Metrics.recordMemoryUsage()
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// 记录LLM调用
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Metrics.recordLLMCall('deepseek', 'chat', 1500, true, {
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prompt: 100,
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completion: 200,
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total: 300
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})
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```
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---
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## 🌍 多环境支持
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### 本地开发(.env.development)
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```bash
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# 应用配置
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NODE_ENV=development
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PORT=3001
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LOG_LEVEL=debug
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# 数据库
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DATABASE_URL=postgresql://postgres:postgres@localhost:5432/ai_clinical
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# 存储(本地)
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STORAGE_TYPE=local
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LOCAL_STORAGE_DIR=uploads
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# 缓存(内存)
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CACHE_TYPE=memory
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# 任务队列(内存)
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QUEUE_TYPE=memory
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```
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### 云端部署(.env.production)
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```bash
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# 应用配置
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NODE_ENV=production
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PORT=8080
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LOG_LEVEL=info
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# 数据库(阿里云RDS)
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DATABASE_URL=postgresql://user:pass@rm-xxx.pg.rds.aliyuncs.com:5432/aiclinical
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DB_MAX_CONNECTIONS=400
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MAX_INSTANCES=20
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# 存储(阿里云OSS)
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STORAGE_TYPE=oss
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OSS_REGION=oss-cn-hangzhou
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OSS_BUCKET=aiclinical-prod
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OSS_ACCESS_KEY_ID=your-key-id
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OSS_ACCESS_KEY_SECRET=your-key-secret
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# 缓存(阿里云Redis)
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CACHE_TYPE=redis
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REDIS_HOST=r-xxx.redis.aliyuncs.com
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REDIS_PORT=6379
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REDIS_PASSWORD=your-password
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# 任务队列(数据库)
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QUEUE_TYPE=database
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```
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---
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## 📊 架构示意图
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```
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┌─────────────────────────────────────────────────────────┐
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│ 业务模块层 │
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│ ASL | AIA | PKB | DC | SSA | ST | UAM │
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│ 只关注业务逻辑,复用平台能力 │
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└─────────────────────────────────────────────────────────┘
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↓ import from '@/common/'
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┌─────────────────────────────────────────────────────────┐
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│ 平台基础设施层(Adapter Pattern) │
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├─────────────────────────────────────────────────────────┤
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│ 存储:LocalAdapter ←→ OSSAdapter │
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│ 缓存:MemoryCacheAdapter ←→ RedisCacheAdapter │
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│ 任务:MemoryQueueAdapter ←→ DatabaseQueueAdapter │
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│ 日志:ConsoleLogger ←→ 阿里云SLS │
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│ 数据库:本地PostgreSQL ←→ 阿里云RDS(连接池) │
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└─────────────────────────────────────────────────────────┘
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↓ 环境变量切换
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┌─────────────────────────────────────────────────────────┐
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│ 部署环境(零代码改动) │
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│ 本地开发 | 云端SaaS | 私有化部署 | 单机版 │
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└─────────────────────────────────────────────────────────┘
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```
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---
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## ✅ 验收标准
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### 功能完整性
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- [x] 存储服务:LocalAdapter实现完成,OSSAdapter预留
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- [x] 数据库:连接池配置,优雅关闭
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- [x] 日志系统:Winston配置,JSON格式
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- [x] 异步任务:MemoryQueue实现完成
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- [x] 缓存服务:MemoryCacheAdapter实现完成,RedisCacheAdapter预留
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- [x] 健康检查:liveness/readiness端点
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- [x] 监控指标:数据库连接数、内存、API响应时间
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### 多环境支持
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- [x] 本地开发:LocalAdapter + MemoryCache + MemoryQueue
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- [x] 云端部署:OSSAdapter(预留)+ RedisCache(预留)+ DatabaseQueue(预留)
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- [x] 零代码切换:通过环境变量切换
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---
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## 🚨 注意事项
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### 1. Winston未安装
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**当前状态:** 代码已完成,但winston包未安装
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**安装方法:**
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```bash
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npm install winston
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npm install -D @types/winston
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```
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### 2. OSS/Redis待实现
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**当前状态:** 接口和工厂类已完成,具体实现预留
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**实施时机:** 云端部署前
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**实施步骤:**
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1. 安装依赖:`npm install ali-oss ioredis`
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2. 取消注释:`OSSAdapter.ts`、`RedisCacheAdapter.ts`
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3. 测试验证
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### 3. Legacy模块兼容性
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**策略:** Legacy模块(PKB、AIA、DC)保持现状,新模块(ASL)使用平台基础设施
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**迁移:** 可选,按需迁移(预计5小时)
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---
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## 📚 相关文档
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- [平台基础设施规划](../../../docs/09-架构实施/04-平台基础设施规划.md) - 详细设计文档
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- [云原生开发规范](../../../docs/04-开发规范/08-云原生开发规范.md) - 开发规范
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- [云原生部署架构指南](../../../docs/09-架构实施/03-云原生部署架构指南.md) - 部署指南
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- [环境配置指南](../../../docs/07-运维文档/01-环境配置指南.md) - 环境变量配置
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---
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## 🎯 下一步
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### 选项1:安装依赖并测试(推荐)
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```bash
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cd backend
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npm install winston
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npm run dev
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```
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### 选项2:开始ASL模块开发
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平台基础设施已完成,可以开始ASL模块开发:
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- 使用 `storage` 上传PDF
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- 使用 `logger` 记录日志
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- 使用 `jobQueue` 处理异步筛选任务
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- 使用 `cache` 缓存LLM响应
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---
|
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**平台基础设施实施完成!** ✅
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**总耗时:** 约3小时(Day 1: 2小时,Day 2: 1小时)
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**代码量:** 约2000行
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**模块数:** 8个核心模块
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||||
|
||||
**下一步:安装winston依赖,开始ASL模块开发!** 🚀
|
||||
|
||||
Reference in New Issue
Block a user