initial project setup with README and ignore

app/middleware/__init__.py

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+"""Middleware components."""
+

app/middleware/request_id.py

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+"""Request ID middleware for request tracing."""
+
+import uuid
+from fastapi import Request
+from starlette.middleware.base import BaseHTTPMiddleware
+from starlette.responses import Response
+
+
+class RequestIDMiddleware(BaseHTTPMiddleware):
+    """Middleware to add unique request ID to each request."""
+    
+    async def dispatch(self, request: Request, call_next):
+        # Generate or retrieve request ID
+        request_id = request.headers.get("X-Request-ID") or str(uuid.uuid4())
+        
+        # Add request ID to request state
+        request.state.request_id = request_id
+        
+        # Process request
+        response = await call_next(request)
+        
+        # Add request ID to response headers
+        response.headers["X-Request-ID"] = request_id
+        
+        return response
+