Annotation management (#1767)

Co-authored-by: jyong <jyong@dify.ai>

api/tasks/annotation/delete_annotation_index_task.py

@@ -0,0 +1,45 @@
+import datetime
+import logging
+import time
+
+import click
+from celery import shared_task
+from core.index.index import IndexBuilder
+from models.dataset import Dataset
+from services.dataset_service import DatasetCollectionBindingService
+
+
+@shared_task(queue='dataset')
+def delete_annotation_index_task(annotation_id: str, app_id: str, tenant_id: str,
+                                 collection_binding_id: str):
+    """
+    Async delete annotation index task
+    """
+    logging.info(click.style('Start delete app annotation index: {}'.format(app_id), fg='green'))
+    start_at = time.perf_counter()
+    try:
+        dataset_collection_binding = DatasetCollectionBindingService.get_dataset_collection_binding_by_id_and_type(
+            collection_binding_id,
+            'annotation'
+        )
+
+        dataset = Dataset(
+            id=app_id,
+            tenant_id=tenant_id,
+            indexing_technique='high_quality',
+            collection_binding_id=dataset_collection_binding.id
+        )
+
+        vector_index = IndexBuilder.get_default_high_quality_index(dataset)
+        if vector_index:
+            try:
+                vector_index.delete_by_metadata_field('annotation_id', annotation_id)
+            except Exception:
+                logging.exception("Delete annotation index failed when annotation deleted.")
+        end_at = time.perf_counter()
+        logging.info(
+            click.style('App annotations index deleted : {} latency: {}'.format(app_id, end_at - start_at),
+                        fg='green'))
+    except Exception as e:
+        logging.exception("Annotation deleted index failed:{}".format(str(e)))
+