refactor: replace print statements with logging for better error tracking

backend/open_webui/routers/functions.py

@@ -1,4 +1,5 @@
 import os
+import logging
 from pathlib import Path
 from typing import Optional
 
@@ -13,6 +14,11 @@ from open_webui.config import CACHE_DIR
 from open_webui.constants import ERROR_MESSAGES
 from fastapi import APIRouter, Depends, HTTPException, Request, status
 from open_webui.utils.auth import get_admin_user, get_verified_user
+from open_webui.env import SRC_LOG_LEVELS
+
+log = logging.getLogger(__name__)
+log.setLevel(SRC_LOG_LEVELS["MAIN"])
+
 
 router = APIRouter()
 
@@ -79,7 +85,7 @@ async def create_new_function(
                     detail=ERROR_MESSAGES.DEFAULT("Error creating function"),
                 )
         except Exception as e:
-            print(e)
+            log.exception(f"Failed to create a new function: {e}")
             raise HTTPException(
                 status_code=status.HTTP_400_BAD_REQUEST,
                 detail=ERROR_MESSAGES.DEFAULT(e),
@@ -183,7 +189,7 @@ async def update_function_by_id(
         FUNCTIONS[id] = function_module
 
         updated = {**form_data.model_dump(exclude={"id"}), "type": function_type}
-        print(updated)
+        log.debug(updated)
 
         function = Functions.update_function_by_id(id, updated)
 
@@ -299,7 +305,7 @@ async def update_function_valves_by_id(
                 Functions.update_function_valves_by_id(id, valves.model_dump())
                 return valves.model_dump()
             except Exception as e:
-                print(e)
+                log.exception(f"Error updating function values by id {id}: {e}")
                 raise HTTPException(
                     status_code=status.HTTP_400_BAD_REQUEST,
                     detail=ERROR_MESSAGES.DEFAULT(e),
@@ -388,7 +394,7 @@ async def update_function_user_valves_by_id(
                 )
                 return user_valves.model_dump()
             except Exception as e:
-                print(e)
+                log.exception(f"Error updating function user valves by id {id}: {e}")
                 raise HTTPException(
                     status_code=status.HTTP_400_BAD_REQUEST,
                     detail=ERROR_MESSAGES.DEFAULT(e),