Updating collection delete functions to use the same memory saving measures as sync

Author: Funi1234

CHANGES/+collection_delete_memory.bugfix

@@ -0,0 +1 @@
+Reduced memory usage when deleting collections with many versions.

pulp_ansible/app/galaxy/v3/views.py

@@ -80,7 +80,7 @@
 
 from pulp_ansible.app.tasks.deletion import delete_collection_version, delete_collection
 
-from pulp_ansible.app.utils import filter_content_for_repo_version
+from pulp_ansible.app.utils import filter_content_for_repo_version, set_collection_deferred_fields
 
 DOMAIN_ENABLED = settings.DOMAIN_ENABLED
 
@@ -446,6 +446,9 @@ def destroy(self, request: Request, *args, **kwargs) -> Response:
                 status=status.HTTP_400_BAD_REQUEST,
             )
 
+        # Defer loading large JSON fields to prevent memory exhaustion when deleting collections with many versions
+        set_collection_deferred_fields(['contents', 'docs_blob', 'manifest', 'files', 'dependencies'])
+
         repositories = set()
         for version in collection.versions.all():
             for repo in version.repositories.all():

pulp_ansible/app/tasks/deletion.py

@@ -17,6 +17,7 @@
 from collections import defaultdict
 
 from pulp_ansible.app.models import Collection, CollectionVersion
+from pulp_ansible.app.utils import set_collection_deferred_fields
 from pulpcore.plugin.tasking import add_and_remove, orphan_cleanup
 
 log = logging.getLogger(__name__)
@@ -71,6 +72,9 @@ def delete_collection(collection_pk):
     2. Run orphan_cleanup to delete the CollectionVersions
     3. Delete Collection
     """
+    # Defer loading large JSON fields to prevent memory exhaustion when deleting collections with many versions
+    set_collection_deferred_fields(['contents', 'docs_blob', 'manifest', 'files', 'dependencies'])
+
     collection = Collection.objects.get(pk=collection_pk)
     versions = collection.versions.all()
     _remove_collection_version_from_repos(versions)