Feat/delete file when clean document (#5882)

api/events/event_handlers/clean_when_document_deleted.py

     document_id = sender
     dataset_id = kwargs.get('dataset_id')
     doc_form = kwargs.get('doc_form')
-    clean_document_task.delay(document_id, dataset_id, doc_form)
+    file_id = kwargs.get('file_id')
+    clean_document_task.delay(document_id, dataset_id, doc_form, file_id)

api/services/dataset_service.py

     @staticmethod
     def delete_document(document):
         # trigger document_was_deleted signal
-        document_was_deleted.send(document.id, dataset_id=document.dataset_id, doc_form=document.doc_form)
+        file_id = None
+        if document.data_source_type == 'upload_file':
+            if document.data_source_info:
+                data_source_info = document.data_source_info_dict
+                if data_source_info and 'upload_file_id' in data_source_info:
+                    file_id = data_source_info['upload_file_id']
+        document_was_deleted.send(document.id, dataset_id=document.dataset_id,
+                                  doc_form=document.doc_form, file_id=file_id)
 
         db.session.delete(document)
         db.session.commit()

api/tasks/clean_dataset_task.py

 
 from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
 from extensions.ext_database import db
+from extensions.ext_storage import storage
 from models.dataset import (
     AppDatasetJoin,
     Dataset,
     Document,
     DocumentSegment,
 )
+from models.model import UploadFile
 
 
 # Add import statement for ValueError
         db.session.query(DatasetQuery).filter(DatasetQuery.dataset_id == dataset_id).delete()
         db.session.query(AppDatasetJoin).filter(AppDatasetJoin.dataset_id == dataset_id).delete()
 
-        db.session.commit()
+        # delete files
+        if documents:
+            for document in documents:
+                try:
+                    if document.data_source_type == 'upload_file':
+                        if document.data_source_info:
+                            data_source_info = document.data_source_info_dict
+                            if data_source_info and 'upload_file_id' in data_source_info:
+                                file_id = data_source_info['upload_file_id']
+                                file = db.session.query(UploadFile).filter(
+                                    UploadFile.tenant_id == document.tenant_id,
+                                    UploadFile.id == file_id
+                                ).first()
+                                if not file:
+                                    continue
+                                storage.delete(file.key)
+                                db.session.delete(file)
+                except Exception:
+                    continue
 
+        db.session.commit()
         end_at = time.perf_counter()
         logging.info(
             click.style('Cleaned dataset when dataset deleted: {} latency: {}'.format(dataset_id, end_at - start_at), fg='green'))

api/tasks/clean_document_task.py

 import logging
 import time
+from typing import Optional
 
 import click
 from celery import shared_task
 
 from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
 from extensions.ext_database import db
+from extensions.ext_storage import storage
 from models.dataset import Dataset, DocumentSegment
+from models.model import UploadFile
 
 
 @shared_task(queue='dataset')
-def clean_document_task(document_id: str, dataset_id: str, doc_form: str):
+def clean_document_task(document_id: str, dataset_id: str, doc_form: str, file_id: Optional[str]):
     """
     Clean document when document deleted.
     :param document_id: document id
     :param dataset_id: dataset id
     :param doc_form: doc_form
+    :param file_id: file id
 
     Usage: clean_document_task.delay(document_id, dataset_id)
     """
                 db.session.delete(segment)
 
             db.session.commit()
-            end_at = time.perf_counter()
-            logging.info(
-                click.style('Cleaned document when document deleted: {} latency: {}'.format(document_id, end_at - start_at), fg='green'))
+        if file_id:
+            file = db.session.query(UploadFile).filter(
+                UploadFile.id == file_id
+            ).first()
+            if file:
+                try:
+                    storage.delete(file.key)
+                except Exception:
+                    logging.exception("Delete file failed when document deleted, file_id: {}".format(file_id))
+                db.session.delete(file)
+                db.session.commit()
+
+        end_at = time.perf_counter()
+        logging.info(
+            click.style('Cleaned document when document deleted: {} latency: {}'.format(document_id, end_at - start_at), fg='green'))
     except Exception:
         logging.exception("Cleaned document when document deleted failed")