Refactor file upload task to use filename mapping

Changed the handling of original filenames in Langflow upload tasks to use a mapping from file paths to original filenames instead of a list. Updated both the API router and TaskService to support this change, improving reliability when associating uploaded files with their original names.

src/api/router.py

@@ -17,7 +17,7 @@ async def upload_ingest_router(
     document_service=None,
     langflow_file_service=None,
     session_manager=None,
-    task_service=None
+    task_service=None,
 ):
     """
     Router endpoint that automatically routes upload requests based on configuration.
@@ -31,7 +31,7 @@ async def upload_ingest_router(
     try:
         logger.debug(
             "Router upload_ingest endpoint called",
-            disable_langflow_ingest=DISABLE_INGEST_WITH_LANGFLOW
+            disable_langflow_ingest=DISABLE_INGEST_WITH_LANGFLOW,
         )
 
         # Route based on configuration
@@ -42,7 +42,9 @@ async def upload_ingest_router(
         else:
             # Route to Langflow upload and ingest using task service
             logger.debug("Routing to Langflow upload-ingest pipeline via task service")
-            return await langflow_upload_ingest_task(request, langflow_file_service, session_manager, task_service)
+            return await langflow_upload_ingest_task(
+                request, langflow_file_service, session_manager, task_service
+            )
 
     except Exception as e:
         logger.error("Error in upload_ingest_router", error=str(e))
@@ -57,10 +59,7 @@ async def upload_ingest_router(
 
 
 async def langflow_upload_ingest_task(
-    request: Request, 
+    request: Request, langflow_file_service, session_manager, task_service
-    langflow_file_service, 
-    session_manager, 
-    task_service
 ):
     """Task-based langflow upload and ingest for single/multiple files"""
     try:
@@ -86,6 +85,7 @@ async def langflow_upload_ingest_task(
         if settings_json:
             try:
                 import json
+
                 settings = json.loads(settings_json)
             except json.JSONDecodeError as e:
                 logger.error("Invalid settings JSON", error=str(e))
@@ -94,6 +94,7 @@ async def langflow_upload_ingest_task(
         if tweaks_json:
             try:
                 import json
+
                 tweaks = json.loads(tweaks_json)
             except json.JSONDecodeError as e:
                 logger.error("Invalid tweaks JSON", error=str(e))
@@ -107,11 +108,14 @@ async def langflow_upload_ingest_task(
         jwt_token = getattr(request.state, "jwt_token", None)
 
         if not user_id:
-            return JSONResponse({"error": "User authentication required"}, status_code=401)
+            return JSONResponse(
+                {"error": "User authentication required"}, status_code=401
+            )
 
         # Create temporary files for task processing
         import tempfile
         import os
+
         temp_file_paths = []
         original_filenames = []
 
@@ -132,7 +136,7 @@ async def langflow_upload_ingest_task(
                 temp_path = os.path.join(temp_dir, safe_filename)
 
                 # Write content to temp file
-                with open(temp_path, 'wb') as temp_file:
+                with open(temp_path, "wb") as temp_file:
                     temp_file.write(content)
 
                 temp_file_paths.append(temp_path)
@@ -143,22 +147,22 @@ async def langflow_upload_ingest_task(
                 user_id=user_id,
                 has_settings=bool(settings),
                 has_tweaks=bool(tweaks),
-                delete_after_ingest=delete_after_ingest
+                delete_after_ingest=delete_after_ingest,
             )
 
             # Create langflow upload task
-            print(f"tweaks: {tweaks}")
+            logger.debug(
-            print(f"settings: {settings}")
+                f"Preparing to create langflow upload task: tweaks={tweaks}, settings={settings}, jwt_token={jwt_token}, user_name={user_name}, user_email={user_email}, session_id={session_id}, delete_after_ingest={delete_after_ingest}, temp_file_paths={temp_file_paths}",
-            print(f"jwt_token: {jwt_token}")
+            )
-            print(f"user_name: {user_name}")
+            # Create a map between temp_file_paths and original_filenames
-            print(f"user_email: {user_email}")
+            file_path_to_original_filename = dict(zip(temp_file_paths, original_filenames))
-            print(f"session_id: {session_id}")
+            logger.debug(
-            print(f"delete_after_ingest: {delete_after_ingest}")
+                f"File path to original filename map: {file_path_to_original_filename}",
-            print(f"temp_file_paths: {temp_file_paths}")
+            )
             task_id = await task_service.create_langflow_upload_task(
                 user_id=user_id,
                 file_paths=temp_file_paths,
-                original_filenames=original_filenames,
+                original_filenames=file_path_to_original_filename,
                 langflow_file_service=langflow_file_service,
                 session_manager=session_manager,
                 jwt_token=jwt_token,
@@ -173,15 +177,19 @@ async def langflow_upload_ingest_task(
 
             logger.debug("Langflow upload task created successfully", task_id=task_id)
 
-            return JSONResponse({
+            return JSONResponse(
+                {
                     "task_id": task_id,
                     "message": f"Langflow upload task created for {len(upload_files)} file(s)",
-                "file_count": len(upload_files)
+                    "file_count": len(upload_files),
-            }, status_code=202)  # 202 Accepted for async processing
+                },
+                status_code=202,
+            )  # 202 Accepted for async processing
 
         except Exception:
             # Clean up temp files on error
             from utils.file_utils import safe_unlink
+
             for temp_path in temp_file_paths:
                 safe_unlink(temp_path)
             raise
@@ -193,5 +201,6 @@ async def langflow_upload_ingest_task(
             error=str(e),
         )
         import traceback
+
         logger.error("Full traceback", traceback=traceback.format_exc())
         return JSONResponse({"error": str(e)}, status_code=500)

src/services/task_service.py

@@ -1,6 +1,5 @@
 import asyncio
 import random
-from typing import Dict, Optional
 import time
 import uuid
 
@@ -59,7 +58,7 @@ class TaskService:
         file_paths: list,
         langflow_file_service,
         session_manager,
-        original_filenames: list = None,
+        original_filenames: dict | None = None,
         jwt_token: str = None,
         owner_name: str = None,
         owner_email: str = None,
@@ -88,7 +87,7 @@ class TaskService:
         )
         return await self.create_custom_task(user_id, file_paths, processor, original_filenames)
 
-    async def create_custom_task(self, user_id: str, items: list, processor, original_filenames: list = None) -> str:
+    async def create_custom_task(self, user_id: str, items: list, processor, original_filenames: dict | None = None) -> str:
         """Create a new task with custom processor for any type of items"""
         import os
         # Store anonymous tasks under a stable key so they can be retrieved later
@@ -96,14 +95,18 @@ class TaskService:
         task_id = str(uuid.uuid4())
 
         # Create file tasks with original filenames if provided
-        file_tasks = {}
+        normalized_originals = (
-        for i, item in enumerate(items):
+            {str(k): v for k, v in original_filenames.items()} if original_filenames else {}
-            if original_filenames and i < len(original_filenames):
+        )
-                filename = original_filenames[i]
+        file_tasks = {
-            else:
+            str(item): FileTask(
-                filename = os.path.basename(str(item))
+                file_path=str(item),
-
+                filename=normalized_originals.get(
-            file_tasks[str(item)] = FileTask(file_path=str(item), filename=filename)
+                    str(item), os.path.basename(str(item))
+                ),
+            )
+            for item in items
+        }
 
         upload_task = UploadTask(
             task_id=task_id,