fix: reuse BytePlus serverless gateway

Author: evanlowe

frontend/service/studio_release_server/deploy.py

@@ -454,6 +454,20 @@ def _https_endpoint(gateway_service: Any) -> str:
     return ""
 
 
+def _find_reusable_serverless_gateway(gateways: list[Any]) -> Any | None:
+    """Return an existing running serverless gateway when quota blocks a new one."""
+    return next(
+        (
+            gateway
+            for gateway in gateways
+            if getattr(gateway, "type", None) == "serverless"
+            and (getattr(gateway, "status", None) or getattr(gateway, "message", None))
+            == "Running"
+        ),
+        None,
+    )
+
+
 def _create_serverless_gateway(apig: Any) -> str:
     from volcenginesdkapig import (
         CreateGatewayRequest,
@@ -567,7 +581,11 @@ def _ensure_gateway_binding(service: Any, function_id: str) -> str:
     gateways = list(getattr(gateway_response, "items", []) or [])
     gateway = _find_named(gateways, _GATEWAY_NAME)
     if gateway is None:
-        gateway_id = _create_serverless_gateway(apig)
+        gateway = _find_reusable_serverless_gateway(gateways)
+        if gateway is None:
+            gateway_id = _create_serverless_gateway(apig)
+        else:
+            gateway_id = str(gateway.id)
     else:
         if getattr(gateway, "type", None) != "serverless":
             raise RuntimeError(f"Gateway {_GATEWAY_NAME} is not serverless.")

tests/test_studio_release_server.py

@@ -1247,6 +1247,26 @@ def _upload() -> None:
     assert attempts == 3
 
 
+def test_release_server_reuses_running_serverless_gateway() -> None:
+    gateways = [
+        SimpleNamespace(
+            id="provisioning-serverless",
+            type="serverless",
+            status="Creating",
+        ),
+        SimpleNamespace(id="running-dedicated", type="dedicated", status="Running"),
+        SimpleNamespace(
+            id="running-serverless",
+            type="serverless",
+            status="Running",
+        ),
+    ]
+
+    gateway = release_deploy._find_reusable_serverless_gateway(gateways)
+
+    assert gateway.id == "running-serverless"
+
+
 def test_release_bucket_is_private_and_tagged_do_not_delete(
     monkeypatch: pytest.MonkeyPatch,
 ) -> None: