完成后端数据库连接配置

backend/app/api/endpoints/health.py

@@ -0,0 +1,76 @@
+"""
+健康检查接口
+"""
+from datetime import datetime
+from typing import Any, Dict
+
+from fastapi import APIRouter
+
+from app.core.database import mysql_db, mongodb, redis_db
+
+router = APIRouter(tags=["健康检查"])
+
+
+@router.get("/health")
+async def health_check() -> Dict[str, Any]:
+    """
+    健康检查接口
+
+    返回各数据库连接状态和应用信息
+    """
+    # 检查各数据库连接状态
+    mysql_status = "connected"
+    mongodb_status = "connected"
+    redis_status = "connected"
+
+    try:
+        if mysql_db.async_engine is None:
+            mysql_status = "disconnected"
+    except Exception:
+        mysql_status = "error"
+
+    try:
+        if mongodb.client is None:
+            mongodb_status = "disconnected"
+    except Exception:
+        mongodb_status = "error"
+
+    try:
+        if not redis_db.is_connected:
+            redis_status = "disconnected"
+    except Exception:
+        redis_status = "error"
+
+    return {
+        "status": "healthy" if all([
+            mysql_status == "connected",
+            mongodb_status == "connected",
+            redis_status == "connected"
+        ]) else "degraded",
+        "timestamp": datetime.utcnow().isoformat(),
+        "services": {
+            "mysql": mysql_status,
+            "mongodb": mongodb_status,
+            "redis": redis_status,
+        }
+    }
+
+
+@router.get("/health/ready")
+async def readiness_check() -> Dict[str, str]:
+    """
+    就绪检查接口
+
+    用于 Kubernetes/负载均衡器检查服务是否就绪
+    """
+    return {"status": "ready"}
+
+
+@router.get("/health/live")
+async def liveness_check() -> Dict[str, str]:
+    """
+    存活检查接口
+
+    用于 Kubernetes/负载均衡器检查服务是否存活
+    """
+    return {"status": "alive"}