Update app.py

app.py

@@ -3,6 +3,7 @@ from fastapi import FastAPI, HTTPException
 from pydantic import BaseModel
 from typing import Optional
 import uvicorn
+import logging
 from src.RAGSample import setup_retriever, setup_rag_chain, RAGApplication
 import os
 from dotenv import load_dotenv
@@ -154,5 +155,19 @@ async def get_models():
         "vector_database": "ChromaDB (local)"
     }
 
+
+logging.basicConfig(level=logging.INFO)
+logger = logging.getLogger(__name__)
+
 if __name__ == "__main__":
-    uvicorn.run(app, host="0.0.0.0", port=7860, log_level="info")
+    try:
+        logger.info("Starting application...")
+        # Add any initialization code here with try/except blocks
+        
+        port = int(os.getenv("PORT", 7860))
+        logger.info(f"Starting server on port {port}")
+        
+        uvicorn.run(app, host="0.0.0.0", port=port, log_level="info")
+    except Exception as e:
+        logger.error(f"Failed to start application: {e}")
+        raise