Issue#550/#551 fine-tuning: do param sniffing for correct "target" param name

Also avoid local import

ref: Open-EO/openeo-python-driver#274

Author: soxofaan

openeo/rest/vectorcube.py

@@ -7,6 +7,7 @@
 
 import shapely.geometry.base
 
+import openeo.rest.datacube
 from openeo.api.process import Parameter
 from openeo.internal.documentation import openeo_process
 from openeo.internal.graph_building import PGNode
@@ -59,7 +60,7 @@ def process(
         **kwargs,
     ) -> VectorCube:
         """
-        Generic helper to create a new DataCube by applying a process.
+        Generic helper to create a new VectorCube by applying a process.
 
         :param process_id: process id of the process.
         :param args: argument dictionary for the process.
@@ -559,7 +560,7 @@ def apply_dimension(
         )
         return self.process(process_id="apply_dimension", arguments=arguments)
 
-    def vector_to_raster(self, target_data_cube):
+    def vector_to_raster(self, target) -> openeo.rest.datacube.DataCube:
         """
         Converts this vector cube into a :py:class:`~openeo.rest.datacube.DataCube`.
         The bounding polygon of homogenous areas of pixels is constructed.
@@ -570,7 +571,21 @@ def vector_to_raster(self, target_data_cube):
 
         .. versionadded:: 0.28.0
         """
-        from openeo.rest.datacube import DataCube
-
-        pg_node = PGNode(process_id="vector_to_raster", arguments={"data": self, "target_data_cube": target_data_cube})
-        return DataCube(pg_node, connection=self._connection, metadata=self.metadata)
+        # TODO: this parameter sniffing is a temporary workaround until
+        #       the `target` parameter name rename has fully settled
+        #       https://github.com/Open-EO/openeo-python-driver/issues/274
+        #       After that has settled, it is still useful to verify assumptions about this non-standard process.
+        try:
+            process_spec = self.connection.describe_process("vector_to_raster")
+            target_parameter = process_spec["parameters"][1]["name"]
+            assert "target" in target_parameter
+        except Exception:
+            target_parameter = "target"
+
+        pg_node = PGNode(
+            process_id="vector_to_raster",
+            arguments={"data": self, target_parameter: target},
+        )
+        # TODO: the correct metadata has to be passed here:
+        #       replace "geometry" dimension with spatial dimensions of the target cube
+        return openeo.rest.datacube.DataCube(pg_node, connection=self._connection, metadata=self.metadata)

tests/rest/datacube/test_vectorcube.py

@@ -646,7 +646,30 @@ def test_vectorcube_execute_batch_validation(
             assert caplog.messages == []
 
 
-def test_vector_to_raster(s2cube, vector_cube):
+@pytest.mark.parametrize(
+    ["target_parameter", "expected_target_parameter"],
+    [
+        (None, "target"),
+        ("target_data_cube", "target_data_cube"),
+        ("target", "target"),
+    ],
+)
+def test_vector_to_raster(s2cube, vector_cube, requests_mock, target_parameter, expected_target_parameter):
+    if target_parameter:
+        requests_mock.get(
+            API_URL + "/processes",
+            json={
+                "processes": [
+                    {
+                        "id": "vector_to_raster",
+                        "parameters": [
+                            {"name": "data"},
+                            {"name": target_parameter},
+                        ],
+                    }
+                ]
+            },
+        )
     raster_cube = vector_cube.vector_to_raster(s2cube)
     assert raster_cube.flat_graph() == {
         "loadgeojson1": {
@@ -659,7 +682,10 @@ def test_vector_to_raster(s2cube, vector_cube):
         },
         "vectortoraster1": {
             "process_id": "vector_to_raster",
-            "arguments": {"data": {"from_node": "loadgeojson1"}, "target_data_cube": {"from_node": "loadcollection1"}},
+            "arguments": {
+                "data": {"from_node": "loadgeojson1"},
+                expected_target_parameter: {"from_node": "loadcollection1"},
+            },
             "result": True,
         },
     }