func (c *minioCollector) Describe(ch chan<- *prometheus.Desc) {
	ch <- c.desc
}

// Collect is called by the Prometheus registry when collecting metrics.
func (c *minioCollector) Collect(ch chan<- prometheus.Metric) {
	// Expose MinIO's version information
	minioVersionInfo.WithLabelValues(Version, CommitID).Set(1.0)

	storageMetricsPrometheus(ch)
	nodeHealthMetricsPrometheus(ch)
	bucketUsageMetricsPrometheus(ch)

	ch := make(chan prometheus.Metric)
	go func() {
		defer xioutil.SafeClose(ch)
		// Collects prometheus metrics from hist and sends it over ch
		hist.Collect(ch)
	}()

	// Converts metrics received into internal []Metric type
	var metrics []MetricV2
	for promMetric := range ch {
		dtoMetric := &dto.Metric{}
		err := promMetric.Write(dtoMetric)

	defer target.connMutex.Unlock()

	if target.conn != nil {
		ch, err = target.conn.Channel()
		if err == nil {
			if target.args.PublisherConfirms {
				confirms := ch.NotifyPublish(make(chan amqp091.Confirmation, 1))
				if err := ch.Confirm(false); err != nil {
					ch.Close()
					return nil, nil, err
				}
				return ch, confirms, nil
			}
			return ch, nil, nil
		}

		if !isAMQPClosedErr(err) {

	if err != nil {
		return nil, err
	}
	ch := make(chan MetricV2)
	go func(ch chan<- MetricV2) {
		defer close(ch)
		for _, m := range resp.Value() {
			if m == nil {
				continue
			}
			select {
			case <-ctx.Done():
				return
			case ch <- *m:
			}
		}
	}(ch)
	return ch, nil
}

	if !isValidRegion(sRegion, region) {
		return ch, ErrAuthorizationHeaderMalformed
	}
	if credElements[2] != string(stype) {
		if stype == serviceSTS {
			return ch, ErrInvalidServiceSTS
		}
		return ch, ErrInvalidServiceS3
	}
	cred.scope.service = credElements[2]
	if credElements[3] != "aws4_request" {
		return ch, ErrInvalidRequestVersion
	}
	cred.scope.request = credElements[3]

	enableSha256     bool
}

// Get the max throughput and iops numbers.
func objectSpeedTest(ctx context.Context, opts speedTestOpts) chan madmin.SpeedTestResult {
	ch := make(chan madmin.SpeedTestResult, 1)
	go func() {
		defer xioutil.SafeClose(ch)

		concurrency := opts.concurrencyStart

		if opts.autotune {
			// if we have less drives than concurrency then choose

						switch {
						case isCreateEvent:
							ch <- iamWatchEvent{
								isCreated: true,
								keyPath:   string(event.Kv.Key),
							}
						case isDeleteEvent:
							ch <- iamWatchEvent{
								isCreated: false,
								keyPath:   string(event.Kv.Key),
							}
						}

					}
				}
			}
		}
	}()
	return ch

	if err != nil {
		mask = int(madmin.LogMaskAll)
	}
	ch := make(chan log.Info, 1000)
	err = globalConsoleSys.Subscribe(ch, ctx.Done(), "", 0, madmin.LogMask(mask), nil)
	if err != nil {
		return grid.NewRemoteErr(err)
	}
	var buf bytes.Buffer
	enc := json.NewEncoder(&buf)
	for {
		select {
		case entry, ok := <-ch:
			if !ok {
				return grid.NewRemoteErrString("console log channel closed")

		return
	}
	for zb0001 > 0 {
		zb0001--
		field, err = dc.ReadMapKeyPtr()
		if err != nil {
			err = msgp.WrapError(err)
			return
		}
		switch msgp.UnsafeString(field) {
		case "ch":
			err = z.Children.DecodeMsg(dc)
			if err != nil {
				err = msgp.WrapError(err, "Children")
				return
			}
		case "sz":
			z.Size, err = dc.ReadInt64()
			if err != nil {

		Payload:    req,
		DeadlineMS: uint32(m.deadline.Milliseconds()),
	}
	if m.subroute != nil {
		msg.Flags |= FlagSubroute
	}
	ch := make(chan Response, 1)
	m.respMu.Lock()
	if m.closed {
		m.respMu.Unlock()
		return nil, ErrDisconnected
	}
	m.respWait = ch
	m.respMu.Unlock()
	ctx := m.ctx

	// Add deadline if none.
	if msg.DeadlineMS == 0 {