feat: validate attribute before storing

Signed-off-by: F.N. Claessen <felix@seita.nl>

flexmeasures/cli/data_edit.py

@@ -14,6 +14,7 @@
 
 from flexmeasures import Sensor
 from flexmeasures.data import db
+from flexmeasures.data.schemas.attributes import validate_special_attributes
 from flexmeasures.data.schemas.generic_assets import GenericAssetIdField
 from flexmeasures.data.schemas.sensors import SensorIdField
 from flexmeasures.data.models.generic_assets import GenericAsset
@@ -129,6 +130,9 @@ def edit_attribute(
         attribute_null_value=attribute_null_value,
     )
 
+    # Some attributes with special in meaning in FlexMeasures must pass validation
+    validate_special_attributes(attribute_key, attribute_value)
+
     # Set attribute
     for asset in assets:
         asset.attributes[attribute_key] = attribute_value

flexmeasures/data/schemas/attributes.py

@@ -0,0 +1,9 @@
+from typing import Any
+
+from altair.vegalite.schema import Interpolate
+
+
+def validate_special_attributes(key: str, value: Any):
+    """Validate attributes with a special meaning in FlexMeasures."""
+    if key == "interpolate":
+        Interpolate.validate(value)