fix: Set early return when influxdb range is empty (#4274)

api/app_analytics/influxdb_wrapper.py

@@ -83,6 +83,10 @@ def influx_query_manager(
         extra: str = "",
         bucket: str = read_bucket,
     ):
+        # Influx throws an error for an empty range, so just return a list.
+        if date_start == "-0d" and date_stop == "now()":
+            return []
+
         query_api = influxdb_client.query_api()
         drop_columns_input = str(list(drop_columns)).replace("'", '"')
 

api/tests/unit/app_analytics/test_unit_app_analytics_influxdb_wrapper.py

@@ -440,3 +440,14 @@ def test_get_top_organisations_value_error(
     # The wrongly typed data does not stop the remaining data
     # from being returned.
     assert dataset == {456: 43}
+
+
+def test_early_return_for_empty_range_for_influx_query_manager() -> None:
+    # When
+    results = InfluxDBWrapper.influx_query_manager(
+        date_start="-0d",
+        date_stop="now()",
+    )
+
+    # Then
+    assert results == []