revisions_count: implement pagination for metadata revisions

CHANGELOG.md

@@ -22,6 +22,11 @@ Write the date in place of the "Unreleased" in the case a new version is release
   retry cannot fix: an unsupported URL scheme and an invalid request such as an
   illegal header value.
 
+### Fixed
+
+- The metadata revisions endpoint now reports the total revision count, so
+  all revisions can be paged through via the API.
+
 
 ## v0.2.11 (2026-05-27)
 

tests/test_writing.py

@@ -473,6 +473,20 @@ def test_metadata_revisions(tree):
             ac.metadata_revisions.delete_revision(1)
 
 
+def test_metadata_revisions_count(tree):
+    with Context.from_app(build_app(tree)) as context:
+        client = from_context(context)
+        ac = client.write_array([1, 2, 3], key="paginate_me")
+        ac.update_metadata(metadata={"a": 1})
+        ac.update_metadata(metadata={"a": 2})
+        ac.update_metadata(metadata={"a": 3})
+        # `len` reads the total count from the server, which was always 0 before.
+        assert len(ac.metadata_revisions) == 3
+        # Revisions are returned ordered by revision number.
+        revision_numbers = [r["revision_number"] for r in ac.metadata_revisions[:]]
+        assert revision_numbers == sorted(revision_numbers)
+
+
 def test_replace_metadata(tiled_websocket_context):
     context = tiled_websocket_context
     client = from_context(context)

tiled/catalog/adapter.py

@@ -981,6 +981,17 @@ async def revisions(self, offset: int = 0, limit=None):
             ).all()
             return [Revision.from_orm(o[0]) for o in revision_orms]
 
+    async def revisions_count(self) -> int:
+        "Get the total number of revisions for this node."
+        async with self.context.session() as db:
+            return (
+                await db.execute(
+                    select(func.count())
+                    .select_from(orm.Revision)
+                    .where(orm.Revision.node_id == self.node.id)
+                )
+            ).scalar_one()
+
     async def delete(self, recursive=False, external_only=True):
         """Delete the Node, its descendants, and associated DataSources and Assets
 

tiled/server/core.py

@@ -348,7 +348,7 @@ async def construct_revisions_response(
             },
         }
         data.append(item)
-    count = len(data)
+    count = await entry.revisions_count()
     links = pagination_links(base_url, route, path_parts, page, None, count)
     return schemas.Response(data=data, links=links, meta={"count": count})