New endpoint - all collection versions unpaginated

https://pulp.plan.io/issues/7941
closes #7941

CHANGES/7941.feature

@@ -0,0 +1,2 @@
+Introduces a new ``v3/metadata/collection_versions/`` endpoint returning all collections versions
+unpaginated.

pulp_ansible/app/galaxy/v3/serializers.py

@@ -182,15 +182,15 @@ def get_artifact(self, obj):
         """
         Get atrifact summary.
         """
-        return ArtifactRefSerializer(self.context["content_artifact"]).data
+        return ArtifactRefSerializer(obj.contentartifact_set.get()).data
 
     def get_download_url(self, obj) -> str:
         """
         Get artifact download URL.
         """
         host = settings.ANSIBLE_CONTENT_HOSTNAME.strip("/")
         distro_base_path = self.context["path"]
-        filename_path = self.context["content_artifact"].relative_path.lstrip("/")
+        filename_path = obj.contentartifact_set.get().relative_path.lstrip("/")
         download_url = f"{host}/{distro_base_path}/{filename_path}"
         return download_url
 

pulp_ansible/app/galaxy/v3/views.py

@@ -17,7 +17,7 @@
 from rest_framework import viewsets
 
 from pulpcore.plugin.exceptions import DigestValidationError
-from pulpcore.plugin.models import PulpTemporaryFile, Content, ContentArtifact
+from pulpcore.plugin.models import PulpTemporaryFile, Content
 from pulpcore.plugin.serializers import AsyncOperationResponseSerializer
 
 from pulp_ansible.app.galaxy.v3.exceptions import ExceptionHandlerMixin
@@ -90,7 +90,9 @@ def get_queryset(self):
         """
         distro_content = self.get_distro_content(self.kwargs["path"])
 
-        collections = CollectionVersion.objects.select_related("collection").filter(
+        collections = CollectionVersion.objects.select_related(
+            "content_ptr__contentartifact"
+        ).filter(
             pk__in=distro_content, namespace=self.kwargs["namespace"], name=self.kwargs["name"]
         )
         return collections
@@ -100,10 +102,8 @@ def retrieve(self, request, *args, **kwargs):
         Returns a CollectionVersion object.
         """
         instance = self.get_object()
-        artifact = ContentArtifact.objects.get(content=instance)
 
         context = self.get_serializer_context()
-        context["content_artifact"] = artifact
 
         serializer = self.get_serializer_class()(instance, context=context)
 
@@ -328,6 +328,40 @@ def list(self, request, *args, **kwargs):
         return Response(serializer.data)
 
 
+class UnpaginatedCollectionVersionViewSet(CollectionVersionViewSet):
+    """Unpaginated ViewSet for CollectionVersions."""
+
+    pagination_class = None
+
+    def get_queryset(self):
+        """
+        Returns a CollectionVersions queryset for specified distribution.
+        """
+        distro_content = self.get_distro_content(self.kwargs["path"])
+
+        return CollectionVersion.objects.select_related("content_ptr__contentartifact").filter(
+            pk__in=distro_content
+        )
+
+    def list(self, request, *args, **kwargs):
+        """
+        Returns paginated CollectionVersions list.
+        """
+        queryset = self.filter_queryset(self.get_queryset())
+        queryset = sorted(
+            queryset, key=lambda obj: semantic_version.Version(obj.version), reverse=True
+        )
+
+        context = self.get_serializer_context()
+        page = self.paginate_queryset(queryset)
+        if page is not None:
+            serializer = CollectionVersionSerializer(page, many=True, context=context)
+            return self.get_paginated_response(serializer.data)
+
+        serializer = CollectionVersionSerializer(queryset, many=True, context=context)
+        return Response(serializer.data)
+
+
 class CollectionVersionDocsViewSet(
     CollectionVersionRetrieveMixin,
     ExceptionHandlerMixin,

pulp_ansible/app/urls.py

@@ -73,6 +73,11 @@
         views_v3.CollectionImportViewSet.as_view({"get": "retrieve"}),
         name="collection-imports-detail",
     ),
+    path(
+        "metadata/collection_versions/",
+        views_v3.UnpaginatedCollectionVersionViewSet.as_view({"get": "list"}),
+        name="metadata-collection-versions-list",
+    ),
 ]
 
 urlpatterns = [