case <-ticker.C:
			push := s.globalPushContext()
			model.LastPushMutex.Lock()
			if model.LastPushStatus != push {
				model.LastPushStatus = push
				push.UpdateMetrics()
				out, _ := model.LastPushStatus.StatusJSON()
				if string(out) != "{}" {
					log.Infof("Push Status: %s", string(out))
				}
			}
			model.LastPushMutex.Unlock()
		case <-stopCh:
			return
		}
	}
}

	model.LastPushMutex.Lock()
	defer model.LastPushMutex.Unlock()
	if model.LastPushStatus == nil {
		return
	}
	out, err := model.LastPushStatus.StatusJSON()
	if err != nil {
		handleHTTPError(w, err)
		return
	}
	w.Header().Add("Content-Type", "application/json")

	_, _ = w.Write(out)
}

		}
		ps.ServiceIndex.instancesByPort[svcKey][port] = append(ps.ServiceIndex.instancesByPort[svcKey][port], inst...)
	}
}

// StatusJSON implements json.Marshaller, with a lock.
func (ps *PushContext) StatusJSON() ([]byte, error) {
	if ps == nil {
		return []byte{'{', '}'}, nil
	}
	ps.proxyStatusMutex.RLock()
	defer ps.proxyStatusMutex.RUnlock()