Issue #346 Some more ProcessArgs porting

for less boilerplate code and better/earlier error messages

openeo_driver/ProcessGraphDeserializer.py

@@ -13,7 +13,7 @@
 import time
 import warnings
 from pathlib import Path
-from typing import Any, Callable, Dict, Iterable, List, Tuple, Union, Sequence
+from typing import Any, Callable, Dict, Iterable, List, Tuple, Union, Sequence, Optional
 
 import geopandas as gpd
 import numpy as np
@@ -140,7 +140,7 @@ def wrapped(args: dict, env: EvalEnv):
 
 # Type hint alias for a "process function":
 # a Python function that implements some openEO process (as used in `apply_process`)
-ProcessFunction = Callable[[dict, EvalEnv], Any]
+ProcessFunction = Callable[[Union[dict, ProcessArgs], EvalEnv], Any]
 
 
 def process(f: ProcessFunction) -> ProcessFunction:
@@ -750,14 +750,15 @@ def load_collection(args: dict, env: EvalEnv) -> DriverDataCube:
         .param(name='options', description="options specific to the file format", schema={"type": "object"})
         .returns(description="the data as a data cube", schema={})
 )
-def load_disk_data(args: Dict, env: EvalEnv) -> DriverDataCube:
+def load_disk_data(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
     """
     Deprecated, use load_uploaded_files or load_stac
     """
+    _log.warning("Deprecated: usage of load_disk_data")
     kwargs = dict(
-        glob_pattern=extract_arg(args, 'glob_pattern'),
-        format=extract_arg(args, 'format'),
-        options=args.get('options', {}),
+        glob_pattern=args.get_required("glob_pattern", expected_type=str),
+        format=args.get_required("format", expected_type=str),
+        options=args.get_optional("options", default={}, expected_type=dict),
     )
     dry_run_tracer: DryRunDataTracer = env.get(ENV_DRY_RUN_TRACER)
     if dry_run_tracer:
@@ -916,22 +917,18 @@ def save_result(args: Dict, env: EvalEnv) -> SaveResult:  # TODO: return type no
 
 @process_registry_100.add_function(spec=read_spec("openeo-processes/experimental/save_ml_model.json"))
 @process_registry_2xx.add_function(spec=read_spec("openeo-processes/experimental/save_ml_model.json"))
-def save_ml_model(args: dict, env: EvalEnv) -> MlModelResult:
-    data: DriverMlModel = extract_arg(args, "data", process_id="save_ml_model")
-    if not isinstance(data, DriverMlModel):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="save_ml_model", reason=f"Invalid data type {type(data)!r} expected raster-cube."
-        )
-    options = args.get("options", {})
+def save_ml_model(args: ProcessArgs, env: EvalEnv) -> MlModelResult:
+    data = args.get_required("data", expected_type=DriverMlModel)
+    options = args.get_optional("options", default={}, expected_type=dict)
     return MlModelResult(ml_model=data, options=options)
 
 
 @process_registry_100.add_function(spec=read_spec("openeo-processes/experimental/load_ml_model.json"))
 @process_registry_2xx.add_function(spec=read_spec("openeo-processes/experimental/load_ml_model.json"))
-def load_ml_model(args: dict, env: EvalEnv) -> DriverMlModel:
+def load_ml_model(args: ProcessArgs, env: EvalEnv) -> DriverMlModel:
     if env.get(ENV_DRY_RUN_TRACER):
         return DriverMlModel()
-    job_id = extract_arg(args, "id")
+    job_id = args.get_required("id", expected_type=str)
     return env.backend_implementation.load_ml_model(job_id)
 
 
@@ -1138,19 +1135,19 @@ def get_validated_parameter(args, param_name, default_value, expected_type, min_
 
 @process_registry_100.add_function(spec=read_spec("openeo-processes/experimental/predict_random_forest.json"))
 @process_registry_2xx.add_function(spec=read_spec("openeo-processes/experimental/predict_random_forest.json"))
-def predict_random_forest(args: dict, env: EvalEnv):
+def predict_random_forest(args: ProcessArgs, env: EvalEnv):
     raise NotImplementedError
 
 
 @process_registry_100.add_function(spec=read_spec("openeo-processes/experimental/predict_catboost.json"))
 @process_registry_2xx.add_function(spec=read_spec("openeo-processes/experimental/predict_catboost.json"))
-def predict_catboost(args: dict, env: EvalEnv):
+def predict_catboost(args: ProcessArgs, env: EvalEnv):
     raise NotImplementedError
 
 
 @process_registry_100.add_function(spec=read_spec("openeo-processes/experimental/predict_probabilities.json"))
 @process_registry_2xx.add_function(spec=read_spec("openeo-processes/experimental/predict_probabilities.json"))
-def predict_probabilities(args: dict, env: EvalEnv):
+def predict_probabilities(args: ProcessArgs, env: EvalEnv):
     raise NotImplementedError
 
 
@@ -1165,51 +1162,34 @@ def add_dimension(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
 
 
 @process
-def drop_dimension(args: dict, env: EvalEnv) -> DriverDataCube:
-    data_cube = extract_arg(args, 'data')
-    if not isinstance(data_cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="drop_dimension",
-            reason=f"Invalid data type {type(data_cube)!r} expected raster-cube."
-        )
-    return data_cube.drop_dimension(name=extract_arg(args, 'name'))
+def drop_dimension(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    name: str = args.get_required("name", expected_type=str)
+    return cube.drop_dimension(name=name)
 
 
 @process
-def dimension_labels(args: dict, env: EvalEnv) -> DriverDataCube:
-    data_cube = extract_arg(args, 'data')
-    if not isinstance(data_cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="dimension_labels",
-            reason=f"Invalid data type {type(data_cube)!r} expected raster-cube."
-        )
-    return data_cube.dimension_labels(dimension=extract_arg(args, 'dimension'))
+def dimension_labels(args: ProcessArgs, env: EvalEnv) -> List[str]:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    dimension: str = args.get_required("dimension", expected_type=str)
+    return cube.dimension_labels(dimension=dimension)
 
 
 @process
-def rename_dimension(args: dict, env: EvalEnv) -> DriverDataCube:
-    data_cube = extract_arg(args, 'data')
-    if not isinstance(data_cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="rename_dimension",
-            reason=f"Invalid data type {type(data_cube)!r} expected raster-cube."
-        )
-    return data_cube.rename_dimension(source=extract_arg(args, 'source'),target=extract_arg(args, 'target'))
+def rename_dimension(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    source: str = args.get_required("source", expected_type=str)
+    target: str = args.get_required("target", expected_type=str)
+    return cube.rename_dimension(source=source, target=target)
 
 
 @process
-def rename_labels(args: dict, env: EvalEnv) -> DriverDataCube:
-    data_cube = extract_arg(args, 'data')
-    if not isinstance(data_cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="rename_labels",
-            reason=f"Invalid data type {type(data_cube)!r} expected raster-cube."
-        )
-    return data_cube.rename_labels(
-        dimension=extract_arg(args, 'dimension'),
-        target=extract_arg(args, 'target'),
-        source=args.get('source',[])
-    )
+def rename_labels(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    dimension: str = args.get_required("dimension", expected_type=str)
+    target: List[str] = args.get_required("target", expected_type=list)
+    source: Optional[str] = args.get_optional("source", default=None)
+    return cube.rename_labels(dimension=dimension, target=target, source=source)
 
 
 @process
@@ -1355,14 +1335,10 @@ def aggregate_spatial(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
 
 
 @process
-def mask(args: dict, env: EvalEnv) -> DriverDataCube:
-    cube = extract_arg(args, 'data')
-    if not isinstance(cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="mask", reason=f"Invalid data type {type(cube)!r} expected raster-cube."
-        )
-    mask = extract_arg(args, 'mask')
-    replacement = args.get('replacement', None)
+def mask(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    mask = args.get_required("mask")
+    replacement = args.get_optional("replacement", default=None)
     return cube.mask(mask=mask, replacement=replacement)
 
 
@@ -1394,7 +1370,10 @@ def mask_polygon(args: dict, env: EvalEnv) -> DriverDataCube:
     return image_collection
 
 
-def _extract_temporal_extent(args: dict, field="extent", process_id="filter_temporal") -> Tuple[str, str]:
+def _extract_temporal_extent(
+    args: Union[dict, ProcessArgs], field="extent", process_id="filter_temporal"
+) -> Tuple[str, str]:
+    # TODO: make this a ProcessArgs method?
     extent = extract_arg(args, name=field, process_id=process_id)
     if len(extent) != 2:
         raise ProcessParameterInvalidException(
@@ -1419,29 +1398,27 @@ def _extract_temporal_extent(args: dict, field="extent", process_id="filter_temp
 
 
 @process
-def filter_temporal(args: dict, env: EvalEnv) -> DriverDataCube:
-    cube = extract_arg(args, 'data')
-    if not isinstance(cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="filter_temporal",
-            reason=f"Invalid data type {type(cube)!r} expected raster-cube."
-        )
+def filter_temporal(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
     extent = _extract_temporal_extent(args, field="extent", process_id="filter_temporal")
     return cube.filter_temporal(start=extent[0], end=extent[1])
 
+
 @process_registry_100.add_function(spec=read_spec("openeo-processes/1.x/proposals/filter_labels.json"))
 @process_registry_2xx.add_function(spec=read_spec("openeo-processes/2.x/proposals/filter_labels.json"))
-def filter_labels(args: dict, env: EvalEnv) -> DriverDataCube:
-    cube = extract_arg(args, 'data')
-    if not isinstance(cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="filter_labels",
-            reason=f"Invalid data type {type(cube)!r} expected cube."
-        )
+def filter_labels(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    # TODO: validation that condition is a process graph construct
+    condition = args.get_required("condition", expected_type=dict)
+    dimension = args.get_required("dimension", expected_type=str)
+    context = args.get_optional("context", default=None)
+    return cube.filter_labels(condition=condition, dimension=dimension, context=context, env=env)
 
-    return cube.filter_labels(condition=extract_arg(args,"condition"),dimension=extract_arg(args,"dimension"),context=args.get("context",None),env=env)
 
-def _extract_bbox_extent(args: dict, field="extent", process_id="filter_bbox", handle_geojson=False) -> dict:
+def _extract_bbox_extent(
+    args: Union[dict, ProcessArgs], field="extent", process_id="filter_bbox", handle_geojson=False
+) -> dict:
+    # TODO: make this a ProcessArgs method?
     extent = extract_arg(args, name=field, process_id=process_id)
     if handle_geojson and extent.get("type") in [
         "Polygon",
@@ -1466,24 +1443,16 @@ def _extract_bbox_extent(args: dict, field="extent", process_id="filter_bbox", h
 
 
 @process
-def filter_bbox(args: Dict, env: EvalEnv) -> DriverDataCube:
-    cube = extract_arg(args, 'data')
-    if not isinstance(cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="filter_bbox", reason=f"Invalid data type {type(cube)!r} expected raster-cube."
-        )
+def filter_bbox(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
     spatial_extent = _extract_bbox_extent(args, "extent", process_id="filter_bbox")
     return cube.filter_bbox(**spatial_extent)
 
 
 @process
-def filter_spatial(args: Dict, env: EvalEnv) -> DriverDataCube:
-    cube = extract_arg(args, 'data')
-    geometries = extract_arg(args, 'geometries')
-    if not isinstance(cube, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="filter_spatial", reason=f"Invalid data type {type(cube)!r} expected raster-cube."
-        )
+def filter_spatial(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    geometries = args.get_required("geometries")
 
     if isinstance(geometries, dict):
         if "type" in geometries and geometries["type"] != "GeometryCollection":
@@ -1512,32 +1481,22 @@ def filter_spatial(args: Dict, env: EvalEnv) -> DriverDataCube:
 
 
 @process
-def filter_bands(args: Dict, env: EvalEnv) -> Union[DriverDataCube, DriverVectorCube]:
-    cube: Union[DriverDataCube, DriverVectorCube] = extract_arg(args, "data")
-    if not isinstance(cube, DriverDataCube) and not isinstance(cube, DriverVectorCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="filter_bands", reason=f"Invalid data type {type(cube)!r} expected raster-cube."
-        )
-    bands = extract_arg(args, "bands", process_id="filter_bands")
+def filter_bands(args: ProcessArgs, env: EvalEnv) -> Union[DriverDataCube, DriverVectorCube]:
+    cube: Union[DriverDataCube, DriverVectorCube] = args.get_required(
+        "data", expected_type=(DriverDataCube, DriverVectorCube)
+    )
+    bands = args.get_required("bands", expected_type=list)
     return cube.filter_bands(bands=bands)
 
 
 @process
-def apply_kernel(args: Dict, env: EvalEnv) -> DriverDataCube:
-    image_collection = extract_arg(args, 'data')
-    kernel = np.asarray(extract_arg(args, 'kernel'))
-    factor = args.get('factor', 1.0)
-    border = args.get('border', 0)
-    if not isinstance(image_collection, DriverDataCube):
-        raise ProcessParameterInvalidException(
-            parameter="data", process="apply_kernel",
-            reason=f"Invalid data type {type(image_collection)!r} expected raster-cube."
-        )
-    if border == "0":
-        # R-client sends `0` border as a string
-        border = 0
-    replace_invalid = args.get('replace_invalid', 0)
-    return image_collection.apply_kernel(kernel=kernel, factor=factor, border=border, replace_invalid=replace_invalid)
+def apply_kernel(args: ProcessArgs, env: EvalEnv) -> DriverDataCube:
+    cube: DriverDataCube = args.get_required("data", expected_type=DriverDataCube)
+    kernel = np.asarray(args.get_required("kernel", expected_type=list))
+    factor = args.get_optional("factor", default=1.0, expected_type=(int, float))
+    border = args.get_optional("border", default=0, expected_type=int)
+    replace_invalid = args.get_optional("replace_invalid", default=0, expected_type=(int, float))
+    return cube.apply_kernel(kernel=kernel, factor=factor, border=border, replace_invalid=replace_invalid)
 
 
 @process

openeo_driver/datacube.py

@@ -85,13 +85,15 @@ def filter_spatial(self, geometries) -> 'DriverDataCube':
     def filter_bands(self, bands) -> 'DriverDataCube':
         self._not_implemented()
 
-    def filter_labels(self, condition: dict,dimensin: str, context: Optional[dict] = None, env: EvalEnv = None ) -> 'DriverDataCube':
+    def filter_labels(
+        self, condition: dict, dimension: str, context: Optional[dict] = None, env: EvalEnv = None
+    ) -> "DriverDataCube":
         self._not_implemented()
 
     def apply(self, process: dict, *, context: Optional[dict] = None, env: EvalEnv) -> "DriverDataCube":
         self._not_implemented()
 
-    def apply_kernel(self, kernel: list, factor=1, border=0, replace_invalid=0) -> 'DriverDataCube':
+    def apply_kernel(self, kernel: numpy.ndarray, factor=1, border=0, replace_invalid=0) -> "DriverDataCube":
         self._not_implemented()
 
     def apply_neighborhood(

openeo_driver/processes.py

@@ -5,6 +5,7 @@
 from pathlib import Path
 from typing import Any, Callable, Collection, Dict, List, Optional, Tuple, Union
 
+from openeo_driver.datacube import DriverDataCube
 from openeo_driver.errors import (
     OpenEOApiException,
     ProcessParameterInvalidException,
@@ -325,6 +326,8 @@ def _check_value(
     ):
         if expected_type:
             if not isinstance(value, expected_type):
+                if expected_type is DriverDataCube:
+                    expected_type = "raster cube"
                 raise ProcessParameterInvalidException(
                     parameter=name, process=self.process_id, reason=f"Expected {expected_type} but got {type(value)}."
                 )