outputBytes = int64(tc.ResponseRecorder.Size())
			headerBytes = int64(tc.ResponseRecorder.HeaderSize())
			timeToResponse = time.Now().UTC().Sub(tc.ResponseRecorder.StartTime)
			timeToFirstByte = tc.ResponseRecorder.TTFB()
		}

		entry.AccessKey = reqInfo.Cred.AccessKey
		entry.ParentUser = reqInfo.Cred.ParentUser

		entry.API.Name = reqInfo.API
		entry.API.Bucket = reqInfo.BucketName
		entry.API.Object = reqInfo.ObjectName

	if !ok {
		return nil, nil, fmt.Errorf("response writer does not support hijacking. Type is %T", lrw.ResponseWriter)
	}
	return hj.Hijack()
}

// TTFB of the request - this function needs to be called
// when the request is finished to provide accurate data
func (lrw *ResponseRecorder) TTFB() time.Duration {
	if lrw.ttfbBody != 0 {
		return lrw.ttfbBody
	}
	return lrw.ttfbHeader
}

	}
	for name, value := range httpStats.TotalS3Canceled.APIStats {
		m.Set(apiRequestsCanceledTotal, float64(value), "name", name, "type", "s3")
	}
	return nil
}

// loadAPIRequestsTTFBMetrics - loads S3 TTFB metrics.
//
// This is a `MetricsLoaderFn`.
func loadAPIRequestsTTFBMetrics(ctx context.Context, m MetricValues, _ *metricsCache) error {
	renameLabels := map[string]string{"api": "name"}

	}

	if w != nil {
		// Increment the prometheus http request response histogram with API, Bucket
		bucketHTTPRequestsDuration.With(prometheus.Labels{
			"api":    api,
			"bucket": bucket,
		}).Observe(w.TTFB().Seconds())
	}

	bh.Lock()
	defer bh.Unlock()

	hstats, ok := bh.httpStats[bucket]
	if !ok {
		hstats = bucketHTTPAPIStats{
			currentS3Requests: &HTTPAPIStats{},

				},
				CallStats: madmin.TraceCallStats{
					Latency:         reqEndTime.Sub(respRecorder.StartTime),
					InputBytes:      inputBytes,
					OutputBytes:     respRecorder.Size(),
					TimeToFirstByte: respRecorder.TTFB(),
				},
			},
		}

		globalTrace.Publish(t)
	})
}

func httpTrace(f http.HandlerFunc, logBody bool) http.HandlerFunc {
	return func(w http.ResponseWriter, r *http.Request) {