Add EventTarget.project_name

Return the project name for all targets in
`/api/events/list`. Required for displaying event
targets and building entity URLs in the UI.

Implemented by joining event targets with
projects. The performance effect of the join are
tolerable — with a dataset of 1.8 million events,
requests with various filters take about 0.05s
with hot Postgres cache, and up to ~0.75s with
cold cache, which is similar to previous
measurements.

Author: jvstme

src/dstack/_internal/core/models/events.py

@@ -37,6 +37,15 @@ class EventTarget(CoreModel):
             )
         ),
     ]
+    project_name: Annotated[
+        Optional[str],
+        Field(
+            description=(
+                "Name of the project the target entity belongs to,"
+                " or `null` for target types not bound to a project (e.g., users)"
+            )
+        ),
+    ]
     id: Annotated[uuid.UUID, Field(description="ID of the target entity")]
     name: Annotated[str, Field(description="Name of the target entity")]
 

src/dstack/_internal/server/services/events.py

@@ -370,7 +370,12 @@ async def list_events(
         .order_by(*order_by)
         .limit(limit)
         .options(
-            joinedload(EventModel.targets),
+            (
+                joinedload(EventModel.targets)
+                .joinedload(EventTargetModel.entity_project)
+                .load_only(ProjectModel.name)
+                .noload(ProjectModel.owner)
+            ),
             joinedload(EventModel.actor_user).load_only(UserModel.name),
         )
     )
@@ -395,6 +400,7 @@ def event_model_to_event(event_model: EventModel) -> Event:
         EventTarget(
             type=target.entity_type,
             project_id=target.entity_project_id,
+            project_name=target.entity_project.name if target.entity_project else None,
             id=target.entity_id,
             name=target.entity_name,
         )

src/tests/_internal/server/routers/test_events.py

@@ -79,6 +79,7 @@ async def test_response_format(self, session: AsyncSession, client: AsyncClient)
                     {
                         "type": "project",
                         "project_id": str(project.id),
+                        "project_name": "test_project",
                         "id": str(project.id),
                         "name": "test_project",
                     },
@@ -94,12 +95,14 @@ async def test_response_format(self, session: AsyncSession, client: AsyncClient)
                     {
                         "type": "project",
                         "project_id": str(project.id),
+                        "project_name": "test_project",
                         "id": str(project.id),
                         "name": "test_project",
                     },
                     {
                         "type": "user",
                         "project_id": None,
+                        "project_name": None,
                         "id": str(user.id),
                         "name": "test_user",
                     },