code: def get_scheduler_ordered_list(self, realm):
          scheduler_links = []
          for scheduler_link_uuid in realm.schedulers:
              scheduler_links.append(self.schedulers[scheduler_link_uuid])
          alive = []
          spare = []
          deads = []
          for sdata in scheduler_links:
              if sdata.alive and not sdata.spare:
                  alive.append(sdata)
              elif sdata.alive and sdata.spare:
                  spare.append(sdata)
              else:
                  deads.append(sdata)
          scheduler_links = []
          scheduler_links.extend(alive)
          scheduler_links.extend(spare)
          scheduler_links.extend(deads)
          scheduler_links.reverse()
          return scheduler_links