fix sensor schema validation and raise Warnings

flexmeasures_openweathermap/cli/schemas/weather_sensor.py

@@ -43,7 +43,12 @@ def validate_name_is_supported(self, name: str):
 
     @validates_schema(skip_on_field_errors=False)
     def validate_name_is_unique_in_weather_station(self, data, **kwargs):
-        if "name" not in data:
+        if (
+            "name" not in data
+            or "latitude" not in data
+            or "longitude" not in data
+            or "asset_id" not in data
+        ):
             return  # That's a different validation problem
         if data["latitude"] is not None and data["longitude"] is not None:
             weather_station = get_or_create_weather_station(

flexmeasures_openweathermap/utils/locating.py

@@ -3,7 +3,6 @@
 from typing import Tuple, List, Optional
 
 import click
-from flask import current_app
 
 from flexmeasures.utils.grid_cells import LatLngGrid, get_cell_nums
 from flexmeasures import Sensor
@@ -100,11 +99,11 @@ def find_weather_sensor_by_location(
             location[1] - weather_station.location[1]
             > max_degree_difference_for_nearest_weather_sensor
         ):
-            current_app.logger.warning(
+            raise Warning(
                 f"[FLEXMEASURES-OWM] No sufficiently close weather sensor found (within {max_degree_difference_for_nearest_weather_sensor} {flexmeasures_inflection.pluralize('degree', max_degree_difference_for_nearest_weather_sensor)} distance) for measuring {sensor_name}! We're looking for: {location}, closest available: ({weather_station.location})"
             )
     else:
-        current_app.logger.warning(
+        raise Warning(
             "[FLEXMEASURES-OWM] No weather sensor set up yet for measuring %s. Try the register-weather-sensor CLI task."
             % sensor_name
         )