dify / api /schedule /clean_unused_datasets_task.py
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import datetime
import time
import click
from flask import current_app
from werkzeug.exceptions import NotFound
import app
from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
from extensions.ext_database import db
from models.dataset import Dataset, DatasetQuery, Document
@app.celery.task(queue='dataset')
def clean_unused_datasets_task():
click.echo(click.style('Start clean unused datasets indexes.', fg='green'))
clean_days = int(current_app.config.get('CLEAN_DAY_SETTING'))
start_at = time.perf_counter()
thirty_days_ago = datetime.datetime.now() - datetime.timedelta(days=clean_days)
page = 1
while True:
try:
datasets = db.session.query(Dataset).filter(Dataset.created_at < thirty_days_ago) \
.order_by(Dataset.created_at.desc()).paginate(page=page, per_page=50)
except NotFound:
break
page += 1
for dataset in datasets:
dataset_query = db.session.query(DatasetQuery).filter(
DatasetQuery.created_at > thirty_days_ago,
DatasetQuery.dataset_id == dataset.id
).all()
if not dataset_query or len(dataset_query) == 0:
documents = db.session.query(Document).filter(
Document.dataset_id == dataset.id,
Document.indexing_status == 'completed',
Document.enabled == True,
Document.archived == False,
Document.updated_at > thirty_days_ago
).all()
if not documents or len(documents) == 0:
try:
# remove index
index_processor = IndexProcessorFactory(dataset.doc_form).init_index_processor()
index_processor.clean(dataset, None)
# update document
update_params = {
Document.enabled: False
}
Document.query.filter_by(dataset_id=dataset.id).update(update_params)
db.session.commit()
click.echo(click.style('Cleaned unused dataset {} from db success!'.format(dataset.id),
fg='green'))
except Exception as e:
click.echo(
click.style('clean dataset index error: {} {}'.format(e.__class__.__name__, str(e)),
fg='red'))
end_at = time.perf_counter()
click.echo(click.style('Cleaned unused dataset from db success latency: {}'.format(end_at - start_at), fg='green'))