Rename geometry workflow API to Catalyst

flow360/cloud/flow360_requests.py

@@ -118,10 +118,9 @@ class NewGeometryRequest(Flow360RequestsV2):
         alias="lengthUnit", description="project length unit"
     )
     description: str = pd_v2.Field(default="", description="project description")
-    use_nextflow: bool = pd_v2.Field(
+    use_catalyst: bool = pd_v2.Field(
         default=False,
-        alias="useNextflow",
-        description="Route geometry processing through Nextflow pipeline instead of legacy system",
+        description="Use the Catalyst workflow for geometry processing",
     )
 
 

flow360/component/geometry.py

@@ -39,6 +39,8 @@
 from flow360.exceptions import Flow360FileError, Flow360ValueError
 from flow360.log import log
 
+GeometryWorkflow = Literal["standard", "catalyst"]
+
 
 class GeometryStatus(Enum):
     """Status of geometry resource, the is_final method is overloaded"""
@@ -107,7 +109,7 @@ def __init__(
         length_unit: LengthUnitType = "m",
         tags: List[str] = None,
         folder: Optional[Folder] = None,
-        use_nextflow_pipelines: bool = False,
+        workflow: GeometryWorkflow = "standard",
     ):
         """
         Initialize a GeometryDraft with common attributes.
@@ -139,7 +141,7 @@ def __init__(
         self.length_unit = length_unit
         self.solver_version = solver_version
         self.folder = folder
-        self.use_nextflow_pipelines = use_nextflow_pipelines
+        self.workflow = workflow
 
         # pylint: disable=fixme
         # TODO: create a DependableResourceDraft for GeometryDraft and SurfaceMeshDraft
@@ -169,6 +171,11 @@ def _validate_geometry(self):
                 f"specified length_unit : {self.length_unit} is invalid. "
                 f"Valid options are: {list(LengthUnitType.__args__)}"
             )
+        if self.workflow not in ("standard", "catalyst"):
+            raise Flow360ValueError(
+                f"specified workflow : {self.workflow} is invalid. "
+                "Valid options are: ['standard', 'catalyst']"
+            )
 
     def _set_default_project_name(self):
         """Set default project name if not provided for project creation."""
@@ -243,7 +250,7 @@ def _create_project_root_resource(
             parent_folder_id=self.folder.id if self.folder else "ROOT.FLOW360",
             length_unit=self.length_unit,
             description=description,
-            use_nextflow=self.use_nextflow_pipelines,
+            use_catalyst=self.workflow == "catalyst",
         )
 
         resp = RestApi(GeometryInterface.endpoint).post(req.dict())
@@ -476,7 +483,7 @@ def from_file(
         length_unit: LengthUnitType = "m",
         tags: List[str] = None,
         folder: Optional[Folder] = None,
-        use_nextflow_pipelines: bool = False,
+        workflow: GeometryWorkflow = "standard",
     ) -> GeometryDraft:
         return GeometryDraft(
             file_names=file_names,
@@ -485,7 +492,7 @@ def from_file(
             length_unit=length_unit,
             tags=tags,
             folder=folder,
-            use_nextflow_pipelines=use_nextflow_pipelines,
+            workflow=workflow,
         )
 
     @classmethod

flow360/component/project.py

@@ -27,7 +27,7 @@
     fetch_examples,
     find_example_by_name,
 )
-from flow360.component.geometry import Geometry
+from flow360.component.geometry import Geometry, GeometryWorkflow
 from flow360.component.interfaces import (
     GeometryInterface,
     ProjectInterface,
@@ -931,6 +931,7 @@ def _create_project_from_files(
         tags: List[str] = None,
         run_async: bool = False,
         folder: Optional[Folder] = None,
+        workflow: GeometryWorkflow = "standard",
     ):
         """
         Initializes a project from a file.
@@ -969,7 +970,13 @@ def _create_project_from_files(
 
         if isinstance(files, GeometryFiles):
             draft = Geometry.from_file(
-                files.file_names, name, solver_version, length_unit, tags, folder=folder
+                files.file_names,
+                name,
+                solver_version,
+                length_unit,
+                tags,
+                folder=folder,
+                workflow=workflow,
             )
         elif isinstance(files, SurfaceMeshFile):
             draft = SurfaceMeshV2.from_file(
@@ -1150,6 +1157,7 @@ def from_geometry(
         tags: List[str] = None,
         run_async: bool = False,
         folder: Optional[Folder] = None,
+        workflow: GeometryWorkflow = "standard",
     ):
         """
         Initializes a project from local geometry files.
@@ -1170,6 +1178,10 @@ def from_geometry(
             Whether to create project asynchronously (default is False).
         folder : Optional[Folder], optional
             Parent folder for the project. If None, creates in root.
+        workflow : {"standard", "catalyst"}, optional
+            Workflow used for project geometry preparation. Use `"catalyst"`
+            for geometry preparation recommended for GAI and snappy workflows
+            (default is `"standard"`).
 
         Returns
         -------
@@ -1205,6 +1217,7 @@ def from_geometry(
             tags=tags,
             run_async=run_async,
             folder=folder,
+            workflow=workflow,
         )
 
     @classmethod

tests/simulation/test_project.py

@@ -16,6 +16,7 @@
 from flow360.component.simulation.services import ValidationCalledBy, validate_model
 from flow360.component.simulation.utils import model_attribute_unlock
 from flow360.component.volume_mesh import VolumeMeshV2
+from flow360.examples import Cylinder3D
 from flow360.exceptions import Flow360ConfigurationError, Flow360ValueError
 
 log.set_logging_level("DEBUG")
@@ -57,6 +58,141 @@ def test_from_cloud(mock_id, mock_response):
         project.get_case(asset_id=current_case_id)
 
 
+def test_from_geometry_passes_workflow(monkeypatch):
+    Cylinder3D.get_files()
+    captured = {}
+
+    class _MockDraft:
+        def submit(self, run_async=False):
+            assert run_async is True
+            return MagicMock(project_id="prj-test-project-id")
+
+    def _mock_from_file(
+        file_names,
+        project_name=None,
+        solver_version=None,
+        length_unit="m",
+        tags=None,
+        folder=None,
+        workflow="standard",
+    ):
+        captured["file_names"] = file_names
+        captured["project_name"] = project_name
+        captured["solver_version"] = solver_version
+        captured["length_unit"] = length_unit
+        captured["workflow"] = workflow
+        return _MockDraft()
+
+    monkeypatch.setattr("flow360.component.project.Geometry.from_file", _mock_from_file)
+
+    project_id = fl.Project.from_geometry(
+        Cylinder3D.geometry,
+        name="catalyst-project",
+        solver_version="release-test",
+        length_unit="cm",
+        run_async=True,
+        workflow="catalyst",
+    )
+
+    assert project_id == "prj-test-project-id"
+    assert captured["file_names"] == Cylinder3D.geometry
+    assert captured["project_name"] == "catalyst-project"
+    assert captured["solver_version"] == "release-test"
+    assert captured["length_unit"] == "cm"
+    assert captured["workflow"] == "catalyst"
+
+
+def _fake_geometry_api_response(geo_id: str = "geo-test-0001", prj_id: str = "prj-test-payload"):
+    return {
+        "id": geo_id,
+        "name": "test-geo",
+        "userId": "user-test",
+        "status": "uploaded",
+        "projectId": prj_id,
+        "createdAt": "2026-01-01T00:00:00Z",
+        "updatedAt": "2026-01-01T00:00:00Z",
+        "deleted": False,
+        "tags": [],
+    }
+
+
+def _mock_upload_files(self, *args, **kwargs):
+    geo = MagicMock()
+    geo.short_description.return_value = "test-geo (geo-test)"
+    geo.id = "geo-test-0001"
+    geo.project_id = "prj-test-payload"
+    return geo
+
+
+def test_catalyst_workflow_reaches_api_payload(monkeypatch):
+    Cylinder3D.get_files()
+    captured_payload: dict = {}
+
+    class _FakeRestApi:
+        def __init__(self, endpoint, **kwargs):
+            pass
+
+        def post(self, json_body):
+            captured_payload.update(json_body)
+            return _fake_geometry_api_response()
+
+    monkeypatch.setattr("flow360.component.geometry.RestApi", _FakeRestApi)
+    monkeypatch.setattr("os.path.exists", lambda _: True)
+    monkeypatch.setattr(
+        "flow360.component.geometry.GeometryDraft._upload_files", _mock_upload_files
+    )
+
+    draft = Geometry.from_file(
+        file_names=Cylinder3D.geometry,
+        project_name="payload-test",
+        solver_version="release-test",
+        length_unit="cm",
+        workflow="catalyst",
+    )
+
+    assert draft.workflow == "catalyst"
+    draft.submit(run_async=True)
+
+    assert (
+        captured_payload.get("useCatalyst") is True
+    ), f"Expected Catalyst workflow to set useCatalyst=true, got: {captured_payload}"
+    assert set(captured_payload) >= {"useCatalyst"}
+
+
+def test_standard_workflow_is_default(monkeypatch):
+    Cylinder3D.get_files()
+    captured_payload: dict = {}
+
+    class _FakeRestApi:
+        def __init__(self, endpoint, **kwargs):
+            pass
+
+        def post(self, json_body):
+            captured_payload.update(json_body)
+            return _fake_geometry_api_response(geo_id="geo-test-0002", prj_id="prj-test-default")
+
+    monkeypatch.setattr("flow360.component.geometry.RestApi", _FakeRestApi)
+    monkeypatch.setattr("os.path.exists", lambda _: True)
+    monkeypatch.setattr(
+        "flow360.component.geometry.GeometryDraft._upload_files", _mock_upload_files
+    )
+
+    draft = Geometry.from_file(
+        file_names=Cylinder3D.geometry,
+        project_name="default-test",
+        solver_version="release-test",
+        length_unit="cm",
+    )
+
+    assert draft.workflow == "standard"
+    draft.submit(run_async=True)
+
+    assert (
+        captured_payload.get("useCatalyst") is False
+    ), f"Expected standard workflow to keep useCatalyst=false, got: {captured_payload}"
+    assert set(captured_payload) >= {"useCatalyst"}
+
+
 def test_root_asset_entity_change_reflection(mock_id, mock_response):
     project = fl.Project.from_cloud(project_id="prj-41d2333b-85fd-4bed-ae13-15dcb6da519e")
     geo = project.geometry