smu   sync.RWMutex
	sotab Sockets
	stats stats
}

func (sw *Switch) init() {
	sw.fltab = make(map[FilterType]Filter)
	sw.sotab = make(Sockets)
	sw.stats = make(stats)
}

// Stats returns a list of per-cookie socket statistics.
func (sw *Switch) Stats() []Stat {
	var st []Stat
	sw.smu.RLock()
	for _, s := range sw.stats {
		ns := *s
		st = append(st, ns)
	}
	sw.smu.RUnlock()

	}
	// refer https://www.kernel.org/doc/Documentation/block/stat.txt
	iostats = IOStats{
		ReadIOs:      stats[0],
		ReadMerges:   stats[1],
		ReadSectors:  stats[2],
		ReadTicks:    stats[3],
		WriteIOs:     stats[4],
		WriteMerges:  stats[5],
		WriteSectors: stats[6],
		WriteTicks:   stats[7],
		CurrentIOs:   stats[8],
		TotalTicks:   stats[9],
		ReqTicks:     stats[10],
	}

            def stat = NativeServicesTestFixture.instance.get(Stat)
            assert stat.getUnixMode(registryFile) == 0600 // user read-write
            assert stat.getUnixMode(registryFile.parentFile) == 0700 // user read-write-execute
        }
    }

    @Override
    State getCurrentState() {
        def daemonInfo = registry.all.find { it.context.pid == context.pid }

		if s, ok := bucketReplStats[bucket]; ok {
			stats := s.ReplicationStats
			if stats.hasReplicationUsage() {
				for arn, stat := range stats.Stats {
					m.Set(bucketReplLastHrFailedBytes, float64(stat.Failed.LastHour.Bytes), labels...)
					m.Set(bucketReplLastHrFailedCount, float64(stat.Failed.LastHour.Count), labels...)
					m.Set(bucketReplLastMinFailedBytes, float64(stat.Failed.LastMinute.Bytes), labels...)

func buildRedisFilter(statPrefix, clusterName string) *listener.Filter {
	redisProxy := &redis.RedisProxy{
		LatencyInMicros: true,       // redis latency stats are captured in micro seconds which is typically the case.
		StatPrefix:      statPrefix, // redis stats are prefixed with redis.<statPrefix> by Envoy
		Settings: &redis.RedisProxy_ConnPoolSettings{
			OpTimeout: durationpb.New(redisOpTimeout),
		},

	// Necessarily overlaps with other stats.
	TotalTime time.Duration

	// Total time the goroutine spent in certain ranges; may overlap
	// with other stats.
	RangeTime map[string]time.Duration
}

func (s GoroutineExecStats) NonOverlappingStats() map[string]time.Duration {
	stats := map[string]time.Duration{
		"Execution time":         s.ExecTime,

	activeConnectionsURL := fmt.Sprintf("http://%s/stats?usedonly&filter=downstream_cx_active$", adminHost)
	stats, err := http.DoHTTPGetWithTimeout(activeConnectionsURL, 2*time.Second)
	if err != nil {
		return -1, fmt.Errorf("unable to get listener stats from Envoy : %v", err)
	}
	if stats.Len() == 0 {
		return -1, nil
	}
	activeConnections := 0
	for stats.Len() > 0 {
		line, _ := stats.ReadString('\n')

	state, ws, err := util.GetReadinessStats(host, port)
	if err != nil {
		return fmt.Errorf("failed to get readiness stats: %v", err)
	}

	if state != nil && ServerInfoState(*state) != Live {
		return fmt.Errorf("server is not live, current state is: %v", StateString(ServerInfoState(*state)))
	}

	if !ws {
		return fmt.Errorf("workers have not yet started")
	}

	return nil

	if sl.sweepGen != mheap_.sweepgen {
		throw("sweeper left outstanding across sweep generations")
	}
	for {
		state := a.state.Load()
		if (state&^sweepDrainedMask)-1 >= sweepDrainedMask {
			throw("mismatched begin/end of activeSweep")
		}
		if a.state.CompareAndSwap(state, state-1) {
			if state != sweepDrainedMask {
				return
			}
			if debug.gcpacertrace > 0 {
				live := gcController.heapLive.Load()

	eps := hcsshim.HNSEndpointStats{}
	for _, c := range s.containers {
		for _, stat := range c.hcsStats {
			if endpointName == stat.InstanceId {
				eps = hcsshim.HNSEndpointStats{
					EndpointID:      stat.EndpointId,
					BytesSent:       stat.BytesSent,
					BytesReceived:   stat.BytesReceived,
					PacketsReceived: stat.PacketsReceived,
					PacketsSent:     stat.PacketsSent,
				}
			}
		}
	}

	return &eps, nil
}