Add comprehensive logging and debugging features

- Add request logging middleware to track all incoming requests
- Add startup/shutdown event handlers with detailed logging
- Enhance debug endpoint with server and request information
- Add catch-all route to identify unhandled requests
- Improve logging to help diagnose reverse proxy issues

🤖 Generated with BackendIM

Co-Authored-By: Claude <noreply@anthropic.com>

main.py

@@ -1,13 +1,22 @@
-from fastapi import FastAPI
+import logging
+import time
+from fastapi import FastAPI, Request
 from fastapi.middleware.cors import CORSMiddleware
 from app.core.config import settings
 from app.api.v1.router import api_router
 from app.db.session import engine
 from app.db.base import Base
 
+# Setup logging
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
 # Create database tables
 Base.metadata.create_all(bind=engine)
 
+logger.info(f"Starting {settings.APP_NAME} v{settings.APP_VERSION}")
+logger.info("Database tables created successfully")
+
 app = FastAPI(
     title=settings.APP_NAME,
     version=settings.APP_VERSION,
@@ -17,6 +26,16 @@ app = FastAPI(
     redoc_url="/redoc"
 )
 
+# Add request logging middleware
+@app.middleware("http")
+async def log_requests(request: Request, call_next):
+    start_time = time.time()
+    logger.info(f"Incoming request: {request.method} {request.url}")
+    response = await call_next(request)
+    process_time = time.time() - start_time
+    logger.info(f"Request completed: {request.method} {request.url} - Status: {response.status_code} - Time: {process_time:.4f}s")
+    return response
+
 # Configure CORS
 app.add_middleware(
     CORSMiddleware,
@@ -30,6 +49,27 @@ app.add_middleware(
 app.include_router(api_router, prefix="/api/v1")
 
 
+@app.on_event("startup")
+async def startup_event():
+    logger.info("=== FastAPI Application Started ===")
+    logger.info(f"App Name: {settings.APP_NAME}")
+    logger.info(f"Version: {settings.APP_VERSION}")
+    logger.info("Available endpoints:")
+    logger.info("  GET / - Root endpoint")
+    logger.info("  GET /health - Health check")
+    logger.info("  GET /debug - Debug information")
+    logger.info("  GET /docs - Swagger UI documentation")
+    logger.info("  GET /redoc - ReDoc documentation")
+    logger.info("  GET /openapi.json - OpenAPI schema")
+    logger.info("  * /api/v1/* - API endpoints")
+    logger.info("=====================================")
+
+
+@app.on_event("shutdown")
+async def shutdown_event():
+    logger.info("FastAPI Application shutting down...")
+
+
 @app.get("/")
 async def root():
     """Root endpoint providing service information"""
@@ -60,14 +100,27 @@ async def health_check():
 
 
 @app.get("/debug")
-async def debug_info():
+async def debug_info(request: Request):
     """Debug endpoint to verify FastAPI is running"""
     import os
+    import socket
+    
     return {
-        "message": "FastAPI application is running",
+        "message": "✅ FastAPI application is running correctly",
         "service": settings.APP_NAME,
         "version": settings.APP_VERSION,
-        "python_version": os.sys.version,
+        "timestamp": time.time(),
+        "server_info": {
+            "hostname": socket.gethostname(),
+            "python_version": os.sys.version.split()[0],
+            "platform": os.sys.platform
+        },
+        "request_info": {
+            "client_host": request.client.host if request.client else "unknown",
+            "method": request.method,
+            "url": str(request.url),
+            "headers": dict(request.headers)
+        },
         "available_endpoints": [
             "/",
             "/health", 
@@ -75,6 +128,29 @@ async def debug_info():
             "/docs",
             "/redoc", 
             "/openapi.json",
-            "/api/v1/*"
-        ]
+            "/api/v1/auth/register",
+            "/api/v1/auth/login",
+            "/api/v1/resumes/upload",
+            "/api/v1/jobs/",
+            "/api/v1/matching/analyze"
+        ],
+        "docs_urls": {
+            "swagger_ui": "/docs",
+            "redoc": "/redoc", 
+            "openapi_json": "/openapi.json"
+        }
+    }
+
+
+# Add a catch-all route to log any unhandled requests
+@app.api_route("/{path:path}", methods=["GET", "POST", "PUT", "DELETE", "PATCH", "OPTIONS"])
+async def catch_all(request: Request, path: str):
+    """Catch-all endpoint to log unhandled requests"""
+    logger.warning(f"Unhandled request: {request.method} /{path}")
+    return {
+        "error": "Endpoint not found",
+        "path": path,
+        "method": request.method,
+        "message": "This endpoint does not exist. Check /debug for available endpoints.",
+        "available_docs": ["/docs", "/redoc", "/openapi.json"]
     }