PR #630 improve save_result handling in VectorCube too (#623, #401, #583

, #391)

openeo/rest/_datacube.py

@@ -319,3 +319,38 @@ def build_child_callback(
         raise ValueError(process)
 
     return PGNode.to_process_graph_argument(pg)
+
+
+def _ensure_save_result(
+    cube: _ProcessGraphAbstraction,
+    *,
+    format: Optional[str] = None,
+    options: Optional[dict] = None,
+    weak_format: Optional[str] = None,
+    default_format: str,
+    method: str,
+) -> _ProcessGraphAbstraction:
+    """
+    Make sure there is a`save_result` node in the process graph.
+
+    :param format: (optional) desired `save_result` file format
+    :param options: (optional) desired `save_result` file format parameters
+    :param weak_format: (optional) weak format indicator guessed from file name
+    :param default_format: default format for data type to use when no format is specified by user
+    :return:
+    """
+    # TODO #278 instead of standalone helper function, move this to common base class for raster cubes, vector cubes, ...
+    save_result_nodes = [n for n in cube.result_node().walk_nodes() if n.process_id == "save_result"]
+
+    if not save_result_nodes:
+        # No `save_result` node yet: automatically add it.
+        # TODO: the `save_result` method is not defined on _ProcessGraphAbstraction, but it is on DataCube and VectorCube
+        cube = cube.save_result(format=format or weak_format or default_format, options=options)
+    elif format or options:
+        raise OpenEoClientException(
+            f"{method} with explicit output {'format' if format else 'options'} {format or options!r},"
+            f" but the process graph already has `save_result` node(s)"
+            f" which is ambiguous and should not be combined."
+        )
+
+    return cube

openeo/rest/datacube.py

@@ -46,6 +46,7 @@
 from openeo.rest._datacube import (
     THIS,
     UDF,
+    _ensure_save_result,
     _ProcessGraphAbstraction,
     build_child_callback,
 )
@@ -2095,39 +2096,6 @@ def save_result(
             }
         )
 
-    def _ensure_save_result(
-        self,
-        *,
-        format: Optional[str] = None,
-        options: Optional[dict] = None,
-        weak_format: Optional[str] = None,
-        method: str,
-    ) -> DataCube:
-        """
-        Make sure there is a (final) `save_result` node in the process graph.
-        If there is already one: check if it is consistent with the given format/options (if any)
-        and add a new one otherwise.
-
-        :param format: (optional) desired `save_result` file format
-        :param options: (optional) desired `save_result` file format parameters
-        :return:
-        """
-        # TODO #401 Unify with VectorCube._ensure_save_result and move to generic data cube parent class (not only for raster cubes, but also vector cubes)
-        save_result_nodes = [n for n in self.result_node().walk_nodes() if n.process_id == "save_result"]
-
-        cube = self
-        if not save_result_nodes:
-            # No `save_result` node yet: automatically add it.
-            cube = cube.save_result(format=format or weak_format or self._DEFAULT_RASTER_FORMAT, options=options)
-        elif format or options:
-            raise OpenEoClientException(
-                f"{method} with explicit output {'format' if format else 'options'} {format or options!r},"
-                f" but the process graph already has `save_result` node(s)"
-                f" which is ambiguous and should not be combined."
-            )
-
-        return cube
-
     def download(
         self,
         outputfile: Optional[Union[str, pathlib.Path]] = None,
@@ -2149,9 +2117,14 @@ def download(
             (overruling the connection's ``auto_validate`` setting).
         :return: None if the result is stored to disk, or a bytes object returned by the backend.
         """
-        weak_format = guess_format(outputfile) if outputfile else None
-        cube = self._ensure_save_result(
-            format=format, options=options, weak_format=weak_format, method="DataCube.download()"
+        # TODO #278 centralize download/create_job/execute_job logic in DataCube, VectorCube, MlModel, ...
+        cube = _ensure_save_result(
+            cube=self,
+            format=format,
+            options=options,
+            weak_format=guess_format(outputfile) if outputfile else None,
+            default_format=self._DEFAULT_RASTER_FORMAT,
+            method="DataCube.download()",
         )
         return self._connection.download(cube.flat_graph(), outputfile, validate=validate)
 
@@ -2274,9 +2247,14 @@ def execute_batch(
         if "format" in format_options and not out_format:
             out_format = format_options["format"]  # align with 'download' call arg name
 
-        weak_format = guess_format(outputfile) if outputfile else None
-        cube = self._ensure_save_result(
-            format=out_format, options=format_options, weak_format=weak_format, method="DataCube.execute_batch()"
+        # TODO #278 centralize download/create_job/execute_job logic in DataCube, VectorCube, MlModel, ...
+        cube = _ensure_save_result(
+            cube=self,
+            format=out_format,
+            options=format_options,
+            weak_format=guess_format(outputfile) if outputfile else None,
+            default_format=self._DEFAULT_RASTER_FORMAT,
+            method="DataCube.execute_batch()",
         )
 
         job = cube.create_job(job_options=job_options, validate=validate)
@@ -2320,9 +2298,13 @@ def create_job(
         """
         # TODO: add option to also automatically start the job?
         # TODO: avoid using all kwargs as format_options
-        # TODO: centralize `create_job` for `DataCube`, `VectorCube`, `MlModel`, ...
-        cube = self._ensure_save_result(
-            format=out_format, options=format_options or None, method="DataCube.create_job()"
+        # TODO #278 centralize download/create_job/execute_job logic in DataCube, VectorCube, MlModel, ...
+        cube = _ensure_save_result(
+            cube=self,
+            format=out_format,
+            options=format_options or None,
+            default_format=self._DEFAULT_RASTER_FORMAT,
+            method="DataCube.create_job()",
         )
         return self._connection.create_job(
             process_graph=cube.flat_graph(),

openeo/rest/vectorcube.py

@@ -16,6 +16,7 @@
 from openeo.rest._datacube import (
     THIS,
     UDF,
+    _ensure_save_result,
     _ProcessGraphAbstraction,
     build_child_callback,
 )
@@ -37,6 +38,8 @@ class VectorCube(_ProcessGraphAbstraction):
     A geometry is specified in a 'coordinate reference system'. https://www.w3.org/TR/sdw-bp/#dfn-coordinate-reference-system-(crs)
     """
 
+    _DEFAULT_VECTOR_FORMAT = "GeoJSON"
+
     def __init__(self, graph: PGNode, connection: Connection, metadata: Optional[CubeMetadata] = None):
         super().__init__(pgnode=graph, connection=connection)
         self.metadata = metadata
@@ -195,38 +198,6 @@ def save_result(self, format: Union[str, None] = "GeoJSON", options: dict = None
             },
         )
 
-    def _ensure_save_result(
-        self,
-        format: Optional[str] = None,
-        options: Optional[dict] = None,
-    ) -> VectorCube:
-        """
-        Make sure there is a (final) `save_result` node in the process graph.
-        If there is already one: check if it is consistent with the given format/options (if any)
-        and add a new one otherwise.
-
-        :param format: (optional) desired `save_result` file format
-        :param options: (optional) desired `save_result` file format parameters
-        :return:
-        """
-        # TODO #401 Unify with DataCube._ensure_save_result and move to generic data cube parent class
-        result_node = self.result_node()
-        if result_node.process_id == "save_result":
-            # There is already a `save_result` node:
-            # check if it is consistent with given format/options (if any)
-            args = result_node.arguments
-            if format is not None and format.lower() != args["format"].lower():
-                raise ValueError(f"Existing `save_result` node with different format {args['format']!r} != {format!r}")
-            if options is not None and options != args["options"]:
-                raise ValueError(
-                    f"Existing `save_result` node with different options {args['options']!r} != {options!r}"
-                )
-            cube = self
-        else:
-            # No `save_result` node yet: automatically add it.
-            cube = self.save_result(format=format or "GeoJSON", options=options)
-        return cube
-
     def execute(self, *, validate: Optional[bool] = None) -> dict:
         """Executes the process graph."""
         return self._connection.execute(self.flat_graph(), validate=validate)
@@ -255,11 +226,15 @@ def download(
             When not specified explicitly, output format is guessed from output file extension.
 
         """
-        # TODO #401 make outputfile optional (See DataCube.download)
-        # TODO #401/#449 don't guess/override format if there is already a save_result with format?
-        if format is None and outputfile:
-            format = guess_format(outputfile)
-        cube = self._ensure_save_result(format=format, options=options)
+        # TODO #278 centralize download/create_job/execute_job logic in DataCube, VectorCube, MlModel, ...
+        cube = _ensure_save_result(
+            cube=self,
+            format=format,
+            options=options,
+            weak_format=guess_format(outputfile) if outputfile else None,
+            default_format=self._DEFAULT_VECTOR_FORMAT,
+            method="VectorCube.download()",
+        )
         return self._connection.download(cube.flat_graph(), outputfile=outputfile, validate=validate)
 
     def execute_batch(
@@ -291,11 +266,15 @@ def execute_batch(
         .. versionchanged:: 0.21.0
             When not specified explicitly, output format is guessed from output file extension.
         """
-        if out_format is None and outputfile:
-            # TODO #401/#449 don't guess/override format if there is already a save_result with format?
-            out_format = guess_format(outputfile)
-
-        job = self.create_job(out_format, job_options=job_options, validate=validate, **format_options)
+        cube = _ensure_save_result(
+            cube=self,
+            format=out_format,
+            options=format_options,
+            weak_format=guess_format(outputfile) if outputfile else None,
+            default_format=self._DEFAULT_VECTOR_FORMAT,
+            method="VectorCube.execute_batch()",
+        )
+        job = cube.create_job(job_options=job_options, validate=validate)
         return job.run_synchronous(
             # TODO #135 support multi file result sets too
             outputfile=outputfile,
@@ -331,8 +310,14 @@ def create_job(
         :return: Created job.
         """
         # TODO: avoid using all kwargs as format_options
-        # TODO: centralize `create_job` for `DataCube`, `VectorCube`, `MlModel`, ...
-        cube = self._ensure_save_result(format=out_format, options=format_options or None)
+        # TODO #278 centralize download/create_job/execute_job logic in DataCube, VectorCube, MlModel, ...
+        cube = _ensure_save_result(
+            cube=self,
+            format=out_format,
+            options=format_options or None,
+            default_format=self._DEFAULT_VECTOR_FORMAT,
+            method="VectorCube.create_job()",
+        )
         return self._connection.create_job(
             process_graph=cube.flat_graph(),
             title=title,

openeo/util.py

@@ -416,12 +416,15 @@ def deep_set(data: dict, *keys, value):
         raise ValueError("No keys given")
 
 
-def guess_format(filename: Union[str, Path]) -> str:
+def guess_format(filename: Union[str, Path]) -> Union[str, None]:
     """
     Guess the output format from a given filename and return the corrected format.
     Any names not in the dict get passed through.
     """
-    extension = str(filename).rsplit(".", 1)[-1].lower()
+    extension = Path(filename).suffix
+    if not extension:
+        return None
+    extension = extension[1:].lower()
 
     format_map = {
         "gtiff": "GTiff",