Pulp

Hit this on my pulpcore 3.4.1 installation.

• Create a repo and sync some data
• Create an exporter for this repo
• Export the content somewhere
• Try deleting the export with the following command "DELETE /pulp/api/v3/exporters/core/pulp/03116066-01a3-4abc-be65-29a84242744d/exports/ea4e0ec5-0460-4d58-92c1-b1916ded9920/ HTTP/1.1" 500 27 "-" "OpenAPI-Generator/3.4.1/ruby"

Notice the stack trace below

Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/core/handlers/exception.py", line 34, in inner
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: response = get_response(request)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 115, in _get_response
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: response = self.process_exception_by_middleware(e, request)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/core/handlers/base.py", line 113, in _get_response
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: response = wrapped_callback(request, *callback_args, **callback_kwargs)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/views/decorators/csrf.py", line 54, in wrapped_view
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: return view_func(*args, **kwargs)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/viewsets.py", line 114, in view
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: return self.dispatch(request, *args, **kwargs)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 505, in dispatch
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: response = self.handle_exception(exc)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 465, in handle_exception
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: self.raise_uncaught_exception(exc)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 476, in raise_uncaught_exception
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: raise exc
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/views.py", line 502, in dispatch
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: response = handler(request, *args, **kwargs)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/mixins.py", line 91, in destroy
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: self.perform_destroy(instance)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/rest_framework/mixins.py", line 95, in perform_destroy
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: instance.delete()
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/db/models/base.py", line 918, in delete
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: collector.collect([self], keep_parents=keep_parents)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/db/models/deletion.py", line 224, in collect
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: field.remote_field.on_delete(self, field, sub_objs, self.using)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: File "/usr/local/lib/python3.6/site-packages/django/db/models/deletion.py", line 27, in PROTECT
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: sub_objs
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: django.db.models.deletion.ProtectedError: ("Cannot delete some instances of model 'PulpExport' because they are referenced through a protected foreign key: 'PulpExporter.last_export'", ]>)
Jul 18 00:57:21 centos7-katello-devel-stable.example.com pulpcore-api[9185]: 127.0.0.1 - - [18/Jul/2020:00:57:21 +0000] "DELETE /pulp/api/v3/exporters/core/pulp/03116066-01a3-4abc-be65-29a84242744d/exports/ea4e0ec5-0460-4d58-92c1-b1916ded9920/ HTTP/1.1" 500 27 "-" "OpenAPI-Generator/3.4.1/ruby"