TMSS-2903: add additonal percentages to failure report

SAS/TMSS/backend/src/tmss/tmssapp/adapters/reports.py

@@ -673,7 +673,6 @@ class FailureReport():
                                               .annotate(count=Count(f'{field_name}__value'),
                                                         duration_lost_event=Sum(Coalesce(F('stop'), datetime.utcnow()) - F('start'))))
 
-
             for d in group_aggregates:
                 # determine total duration of affected scheduling units
                 system_events = self.system_events.filter(**{f'{field_name}__value': d[f'{field_name}__value']})
@@ -687,7 +686,17 @@ class FailureReport():
                           'percent_of_wall_time_lost_event': 100 * d['duration_lost_event'].total_seconds() / wall_time,
                           'percent_of_wall_time_lost_on_sky': total_on_sky_duration_lost.total_seconds() / wall_time if total_on_sky_duration_lost else 0})
 
+            total_failure_event_time = sum([d['duration_lost_event'] for d in group_aggregates])
+            total_failure_on_sky_time = sum([d['duration_lost_on_sky'] for d in group_aggregates])
+            total_failure_count = sum(d['count'] for d in group_aggregates)
+
+            for d in group_aggregates:
+                d.update({'percent_of_total_failure_time_lost_event': 100 * d['duration_lost_event'] / total_failure_event_time if total_failure_event_time else 0,
+                          'percent_of_total_failure_time_lost_on_sky': 100 * d['duration_lost_on_sky'] / total_failure_on_sky_time if total_failure_on_sky_time else 0,
+                          'percent_of_total_failure_count': 100 * d['count'] / total_failure_count if total_failure_count else 0})
+
             aggregates[f'by_{field_name}'] = group_aggregates
+
         return aggregates
 
     def _get_lost_observing_time_histogram(self, ignore_time_range=True) -> {}: