Add File deletion criteria with batch references

enterprise/litellm_enterprise/proxy/hooks/managed_files.py

@@ -1051,6 +1051,168 @@ async def afile_list(
         """Handled in files_endpoints.py"""
         return []
 
+    def _is_batch_polling_enabled(self) -> bool:
+        """
+        Check if batch cost tracking is actually enabled and running.
+        Returns:
+            bool: True if batch cost tracking is active, False otherwise
+        """
+        try:
+            # Import here to avoid circular dependencies
+            import litellm.proxy.proxy_server as proxy_server_module
+
+            # Check if the scheduler has the batch cost checking job registered
+            scheduler = getattr(proxy_server_module, 'scheduler', None)
+            if scheduler is None:
+                return False
+
+            # Check if the check_batch_cost_job exists in the scheduler
+            try:
+                job = scheduler.get_job('check_batch_cost_job')
+                if job is not None:
+                    return True
+            except Exception:
+                # Job not found or scheduler doesn't support get_job
+                pass
+
+            return False
+        except Exception as e:
+            verbose_logger.warning(
+                f"Error checking batch polling configuration: {e}. Assuming disabled."
+            )
+            return False
+
+    async def _get_batches_referencing_file(
+        self, file_id: str
+    ) -> List[Dict[str, Any]]:
+        """
+        Find batches in non-terminal states that reference this file.
+
+        Non-terminal states: validating, in_progress, finalizing
+        Terminal states: completed, complete, failed, expired, cancelled
+
+        Args:
+            file_id: The unified file ID to check
+
+        Returns:
+            List of batch objects referencing this file in non-terminal state
+            (max 10 for error message display)
+        """
+        # Prepare list of file IDs to check (both unified and provider IDs)
+        file_ids_to_check = [file_id]
+
+        # Get model-specific file IDs for this unified file ID if it's a managed file
+        try:
+            model_file_id_mapping = await self.get_model_file_id_mapping(
+                [file_id], litellm_parent_otel_span=None
+            )
+
+            if model_file_id_mapping and file_id in model_file_id_mapping:
+                # Add all provider file IDs for this unified file
+                provider_file_ids = list(model_file_id_mapping[file_id].values())
+                file_ids_to_check.extend(provider_file_ids)
+        except Exception as e:
+            verbose_logger.debug(
+                f"Could not get model file ID mapping for {file_id}: {e}. "
+                f"Will only check unified file ID."
+            )
+        MAX_MATCHES_TO_RETURN = 10 
+
+        batches = await self.prisma_client.db.litellm_managedobjecttable.find_many(
+            where={
+                "file_purpose": "batch",
+                "status": {"in": ["validating", "in_progress", "finalizing"]},
+            },
+            take=MAX_MATCHES_TO_RETURN,
+            order={"created_at": "desc"},
+        )
+
+        referencing_batches = []
+        for batch in batches:
+            try:
+                # Parse the batch file_object to check for file references
+                batch_data = json.loads(batch.file_object) if isinstance(batch.file_object, str) else batch.file_object
+
+                # Extract file IDs from batch
+                # Batches typically reference the unified file ID in input_file_id
+                # Output and error files are generated by the provider
+                input_file_id = batch_data.get("input_file_id")
+                output_file_id = batch_data.get("output_file_id")
+                error_file_id = batch_data.get("error_file_id")
+
+                referenced_file_ids = [fid for fid in [input_file_id, output_file_id, error_file_id] if fid]
+
+                # Check if any referenced file ID matches the file we're trying to delete
+                if any(ref_id in file_ids_to_check for ref_id in referenced_file_ids):
+                    referencing_batches.append({
+                        "batch_id": batch.unified_object_id,
+                        "status": batch.status,
+                        "created_at": batch.created_at,
+                    })
+            except Exception as e:
+                verbose_logger.warning(
+                    f"Error parsing batch object {batch.unified_object_id}: {e}"
+                )
+                continue
+
+        return referencing_batches
+
+    async def _check_file_deletion_allowed(self, file_id: str) -> None:
+        """
+        Check if file deletion should be blocked due to batch references.
+
+        Blocks deletion if:
+        1. File is referenced by any batch in non-terminal state, AND
+        2. Batch polling is configured (user wants cost tracking)
+
+        Args:
+            file_id: The unified file ID to check
+
+        Raises:
+            HTTPException: If file deletion should be blocked
+        """
+        # Check if batch polling is enabled
+        if not self._is_batch_polling_enabled():
+            # Batch polling not configured, allow deletion
+            return
+
+        # Check if file is referenced by any non-terminal batches
+        referencing_batches = await self._get_batches_referencing_file(file_id)
+
+        if referencing_batches:
+            # File is referenced by non-terminal batches and polling is enabled
+            MAX_BATCHES_IN_ERROR = 5  # Limit batches shown in error message for readability
+
+            # Show up to MAX_BATCHES_IN_ERROR in the error message
+            batches_to_show = referencing_batches[:MAX_BATCHES_IN_ERROR]
+            batch_statuses = [f"{b['batch_id']}: {b['status']}" for b in batches_to_show]
+
+            # Determine the count message
+            count_message = f"{len(referencing_batches)}"
+            if len(referencing_batches) >= 10:  # MAX_MATCHES_TO_RETURN from _get_batches_referencing_file
+                count_message = "10+"
+
+            error_message = (
+                f"Cannot delete file {file_id}. "
+                f"The file is referenced by {count_message} batch(es) in non-terminal state"
+            )
+
+            # Add specific batch details if not too many
+            if len(referencing_batches) <= MAX_BATCHES_IN_ERROR:
+                error_message += f": {', '.join(batch_statuses)}. "
+            else:
+                error_message += f" (showing {MAX_BATCHES_IN_ERROR} most recent): {', '.join(batch_statuses)}. "
+
+            error_message += (
+                f"To delete this file before complete cost tracking, please delete or cancel the referencing batch(es) first. "
+                f"Alternatively, wait for all batches to complete processing."
+            )
+
+            raise HTTPException(
+                status_code=400,
+                detail=error_message,
+            )
+
     async def afile_delete(
         self,
         file_id: str,
@@ -1059,6 +1221,9 @@ async def afile_delete(
         **data: Dict,
     ) -> OpenAIFileObject:
 
+        # Check if file deletion should be blocked due to batch references
+        await self._check_file_deletion_allowed(file_id)
+
         # file_id = convert_b64_uid_to_unified_uid(file_id)
         model_file_id_mapping = await self.get_model_file_id_mapping(
             [file_id], litellm_parent_otel_span