dify/api/tasks/enable_segment_to_index_task.py

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import datetime
import logging
import time
import click
from celery import shared_task
from core.index.index import IndexBuilder
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from extensions.ext_database import db
from extensions.ext_redis import redis_client
from langchain.schema import Document
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from models.dataset import DocumentSegment
from werkzeug.exceptions import NotFound
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@shared_task(queue='dataset')
def enable_segment_to_index_task(segment_id: str):
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"""
Async enable segment to index
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:param segment_id:
Usage: enable_segment_to_index_task.delay(segment_id)
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"""
logging.info(click.style('Start enable segment to index: {}'.format(segment_id), fg='green'))
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start_at = time.perf_counter()
segment = db.session.query(DocumentSegment).filter(DocumentSegment.id == segment_id).first()
if not segment:
raise NotFound('Segment not found')
if segment.status != 'completed':
raise NotFound('Segment is not completed, enable action is not allowed.')
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indexing_cache_key = 'segment_{}_indexing'.format(segment.id)
try:
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,
}
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)
dataset = segment.dataset
if not dataset:
logging.info(click.style('Segment {} has no dataset, pass.'.format(segment.id), fg='cyan'))
return
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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
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# save vector index
index = IndexBuilder.get_index(dataset, 'high_quality')
if index:
index.add_texts([document], duplicate_check=True)
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# save keyword index
index = IndexBuilder.get_index(dataset, 'economy')
if index:
index.add_texts([document])
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end_at = time.perf_counter()
logging.info(click.style('Segment enabled to index: {} latency: {}'.format(segment.id, end_at - start_at), fg='green'))
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except Exception as e:
logging.exception("enable segment to index failed")
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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)