get node via string (#98)

Co-authored-by: glm2bg <[email protected]>

Author: MP91

.gitignore

@@ -154,3 +154,4 @@ dmypy.json
 
 # MacOS specific
 .DS_Store
+results

examples/seat-adjuster/requirements-links.txt

@@ -1 +1 @@
-git+https://github.com/eclipse-velocitas/[email protected].0
+git+https://github.com/eclipse-velocitas/[email protected].1

sdv/model.py

@@ -826,6 +826,21 @@ class Model(Node):
     def set_many(self) -> BatchSetBuilder:
         return BatchSetBuilder(self.get_client())
 
+    def getNode(self, datapoint_str: str) -> Node:
+        if self.get_path() not in datapoint_str:
+            raise ValueError("Input string has to start with the root")
+        nodes = datapoint_str.split(".")
+        dataPoint = self
+
+        if len(nodes) > 1:
+            for node in nodes[1:]:
+                try:
+                    dataPoint = getattr(dataPoint, node)
+                except Exception as err:
+                    raise AttributeError("Node not found") from err
+
+        return dataPoint
+
 
 class Service(Node):
     """The Service class contains a set of gRPC methods"""

setup.py

@@ -70,7 +70,7 @@
 
 setup(
     name="sdv",
-    version="0.10.0",
+    version="0.10.1",
     description="A Python SDK for Vehicle app",
     long_description=long_description,
     long_description_content_type="text/markdown",

tests/unit/model_test.py

@@ -1512,6 +1512,26 @@ async def test_fail_setting_multiple_data_points_atomically():
             )
 
 
+@pytest.mark.asyncio
+async def test_get_node__available():
+    vehicle = get_vehicle_instance()
+    assert vehicle.getNode(vehicle.Speed.get_path()) == vehicle.Speed
+
+
+@pytest.mark.asyncio
+async def test_get_node__not_available():
+    vehicle = get_vehicle_instance()
+    with pytest.raises(AttributeError):
+        vehicle.getNode("Vehicle.NotAvailable")
+
+
+@pytest.mark.asyncio
+async def test_get_node__root_not_in_string():
+    vehicle = get_vehicle_instance()
+    with pytest.raises(ValueError):
+        vehicle.getNode("Speed")
+
+
 DoorSides = ["Left", "Right"]
 TrunkOptions = ["Front", "Rear"]