feat: 初始化DevOps平台后端

src/prisma/prisma.module.ts

@@ -0,0 +1,9 @@
+import { Global, Module } from '@nestjs/common';
+import { PrismaService } from './prisma.service';
+
+@Global()
+@Module({
+  providers: [PrismaService],
+  exports: [PrismaService],
+})
+export class PrismaModule {}

src/prisma/prisma.service.ts

@@ -0,0 +1,51 @@
+import { Injectable, OnModuleDestroy, OnModuleInit } from '@nestjs/common';
+import { ConfigService } from '@nestjs/config';
+import { PrismaClient } from '@prisma/client';
+import { EnvConfig } from '../config/env.schema';
+
+@Injectable()
+export class PrismaService
+  extends PrismaClient
+  implements OnModuleInit, OnModuleDestroy
+{
+  constructor(private readonly config: ConfigService<EnvConfig, true>) {
+    super({
+      log:
+        config.get('NODE_ENV', { infer: true }) === 'development'
+          ? ['warn', 'error']
+          : ['error'],
+    });
+  }
+
+  async onModuleInit(): Promise<void> {
+    if (
+      this.config.get('DATABASE_URL', { infer: true }) &&
+      this.config.get('PRISMA_CONNECT_ON_BOOT', { infer: true })
+    ) {
+      await this.$connect();
+    }
+  }
+
+  async onModuleDestroy(): Promise<void> {
+    await this.$disconnect();
+  }
+
+  async databaseHealth(): Promise<{
+    status: 'not_configured' | 'ok' | 'unavailable';
+    message?: string;
+  }> {
+    if (!this.config.get('DATABASE_URL', { infer: true })) {
+      return { status: 'not_configured' };
+    }
+
+    try {
+      await this.$connect();
+      return { status: 'ok' };
+    } catch (error) {
+      return {
+        status: 'unavailable',
+        message: error instanceof Error ? error.message : 'Unknown database error',
+      };
+    }
+  }
+}