dify/api/tasks/clean_document_task.py
2023-05-15 08:51:32 +08:00

53 lines
1.8 KiB
Python

import logging
import time
import click
from celery import shared_task
from core.index.keyword_table_index import KeywordTableIndex
from core.index.vector_index import VectorIndex
from extensions.ext_database import db
from models.dataset import DocumentSegment, Dataset
@shared_task
def clean_document_task(document_id: str, dataset_id: str):
"""
Clean document when document deleted.
:param document_id: document id
:param dataset_id: dataset id
Usage: clean_document_task.delay(document_id, dataset_id)
"""
logging.info(click.style('Start clean document when document deleted: {}'.format(document_id), fg='green'))
start_at = time.perf_counter()
try:
dataset = db.session.query(Dataset).filter(Dataset.id == dataset_id).first()
if not dataset:
raise Exception('Document has no dataset')
vector_index = VectorIndex(dataset=dataset)
keyword_table_index = KeywordTableIndex(dataset=dataset)
segments = db.session.query(DocumentSegment).filter(DocumentSegment.document_id == document_id).all()
index_node_ids = [segment.index_node_id for segment in segments]
# delete from vector index
if dataset.indexing_technique == "high_quality":
vector_index.del_nodes(index_node_ids)
# delete from keyword index
if index_node_ids:
keyword_table_index.del_nodes(index_node_ids)
for segment in segments:
db.session.delete(segment)
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")