Added config option for setting timeout of ncss-related requests (#316)

Also set a default value of 30s (the previous value was 5s, which is httpx's default)

arpav_ppcv/config.py

@@ -47,6 +47,7 @@ class ThreddsServerSettings(pydantic.BaseModel):
     base_url: str = "http://localhost:8080/thredds"
     wms_service_url_fragment: str = "wms"
     netcdf_subset_service_url_fragment: str = "ncss/grid"  # noqa
+    netcdf_subset_service_timeout_seconds: int = 30  # noqa
     opendap_service_url_fragment: str = "dodsC"  # noqa
     uncertainty_visualization_scale_range: tuple[float, float] = pydantic.Field(
         default=(0, 9)

arpav_ppcv/webapp/api_v2/routers/coverages.py

@@ -452,6 +452,9 @@ async def get_forecast_data(
             fitted_bbox = None
 
         cache_key = datadownloads.get_cache_key(coverage, fitted_bbox, temporal_range)
+        http_client.timeout = (
+            settings.thredds_server.netcdf_subset_service_timeout_seconds
+        )
         response_to_stream = await datadownloads.retrieve_coverage_data(
             settings, http_client, cache_key, coverage, fitted_bbox, temporal_range
         )