dify

dify/api/tasks/remove_document_from_index_task.py

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+import logging
+import time
+
+import click
+from celery import shared_task
+from sqlalchemy import select
+
+from core.rag.index_processor.index_processor_factory import IndexProcessorFactory
+from extensions.ext_database import db
+from extensions.ext_redis import redis_client
+from libs.datetime_utils import naive_utc_now
+from models.dataset import Document, DocumentSegment
+
+logger = logging.getLogger(__name__)
+
+
+@shared_task(queue="dataset")
+def remove_document_from_index_task(document_id: str):
+    """
+    Async Remove document from index
+    :param document_id: document id
+
+    Usage: remove_document_from_index.delay(document_id)
+    """
+    logger.info(click.style(f"Start remove document segments from index: {document_id}", fg="green"))
+    start_at = time.perf_counter()
+
+    document = db.session.query(Document).where(Document.id == document_id).first()
+    if not document:
+        logger.info(click.style(f"Document not found: {document_id}", fg="red"))
+        db.session.close()
+        return
+
+    if document.indexing_status != "completed":
+        logger.info(click.style(f"Document is not completed, remove is not allowed: {document_id}", fg="red"))
+        db.session.close()
+        return
+
+    indexing_cache_key = f"document_{document.id}_indexing"
+
+    try:
+        dataset = document.dataset
+
+        if not dataset:
+            raise Exception("Document has no dataset")
+
+        index_processor = IndexProcessorFactory(document.doc_form).init_index_processor()
+
+        segments = db.session.scalars(select(DocumentSegment).where(DocumentSegment.document_id == document.id)).all()
+        index_node_ids = [segment.index_node_id for segment in segments]
+        if index_node_ids:
+            try:
+                index_processor.clean(dataset, index_node_ids, with_keywords=True, delete_child_chunks=False)
+            except Exception:
+                logger.exception("clean dataset %s from index failed", dataset.id)
+        # update segment to disable
+        db.session.query(DocumentSegment).where(DocumentSegment.document_id == document.id).update(
+            {
+                DocumentSegment.enabled: False,
+                DocumentSegment.disabled_at: naive_utc_now(),
+                DocumentSegment.disabled_by: document.disabled_by,
+                DocumentSegment.updated_at: naive_utc_now(),
+            }
+        )
+        db.session.commit()
+
+        end_at = time.perf_counter()
+        logger.info(click.style(f"Document removed from index: {document.id} latency: {end_at - start_at}", fg="green"))
+    except Exception:
+        logger.exception("remove document from index failed")
+        if not document.archived:
+            document.enabled = True
+            db.session.commit()
+    finally:
+        redis_client.delete(indexing_cache_key)
+        db.session.close()