dify/api/tasks/update_segment_keyword_index_task.py
KVOJJJin cf93d8d6e2
Feat: Q&A format segmentation support (#668)
Co-authored-by: jyong <718720800@qq.com>
Co-authored-by: StyleZhang <jasonapring2015@outlook.com>
2023-07-28 20:47:15 +08:00

82 lines
2.7 KiB
Python

import datetime
import logging
import time
from typing import List, Optional
import click
from celery import shared_task
from langchain.schema import Document
from werkzeug.exceptions import NotFound
from core.index.index import IndexBuilder
from extensions.ext_database import db
from extensions.ext_redis import redis_client
from models.dataset import DocumentSegment
@shared_task
def update_segment_keyword_index_task(segment_id: str):
"""
Async update segment index
:param segment_id:
Usage: update_segment_keyword_index_task.delay(segment_id)
"""
logging.info(click.style('Start update segment keyword index: {}'.format(segment_id), fg='green'))
start_at = time.perf_counter()
segment = db.session.query(DocumentSegment).filter(DocumentSegment.id == segment_id).first()
if not segment:
raise NotFound('Segment not found')
indexing_cache_key = 'segment_{}_indexing'.format(segment.id)
try:
dataset = segment.dataset
if not dataset:
logging.info(click.style('Segment {} has no dataset, pass.'.format(segment.id), fg='cyan'))
return
dataset_document = segment.document
if not dataset_document:
logging.info(click.style('Segment {} has no document, pass.'.format(segment.id), fg='cyan'))
return
if not dataset_document.enabled or dataset_document.archived or dataset_document.indexing_status != 'completed':
logging.info(click.style('Segment {} document status is invalid, pass.'.format(segment.id), fg='cyan'))
return
kw_index = IndexBuilder.get_index(dataset, 'economy')
# delete from keyword index
kw_index.delete_by_ids([segment.index_node_id])
# add new index
document = Document(
page_content=segment.content,
metadata={
"doc_id": segment.index_node_id,
"doc_hash": segment.index_node_hash,
"document_id": segment.document_id,
"dataset_id": segment.dataset_id,
}
)
# save keyword index
index = IndexBuilder.get_index(dataset, 'economy')
if index:
index.update_segment_keywords_index(segment.index_node_id, segment.keywords)
end_at = time.perf_counter()
logging.info(click.style('Segment update index: {} latency: {}'.format(segment.id, end_at - start_at), fg='green'))
except Exception as e:
logging.exception("update segment index failed")
segment.enabled = False
segment.disabled_at = datetime.datetime.utcnow()
segment.status = 'error'
segment.error = str(e)
db.session.commit()
finally:
redis_client.delete(indexing_cache_key)