+ selected_keys = [
+ 'alarm_id', 'alarm_state', 'entity_type_id', 'entity_instance_id',
+ 'reason_text', 'alarm_type', 'probable_cause',
+ 'proposed_repair_action', 'service_affecting', 'suppression',
+ 'suppression_status', 'mgmt_affecting', 'degrade_affecting'
+ ]
+ content = alarm.to_dict()
+ filtered = dict(
+ filter(lambda item: item[0] in selected_keys, content.items()))
+ setattr(alarm, 'filtered', filtered)