// remove sensitive encryption entries in metadata.
	crypto.RemoveSensitiveEntries(args.Object.UserDefined)
	crypto.RemoveInternalEntries(args.Object.UserDefined)

	if globalHTTPListen.NumSubscribers(pubsub.MaskFromMaskable(args.EventName)) > 0 {
		globalHTTPListen.Publish(args.ToEvent(false))
	}

	globalEventNotifier.Send(args)

		}

		r = r.WithContext(context.WithValue(r.Context(), mcontext.ContextTraceKey, &tc))

		reqStartTime := time.Now().UTC()
		h.ServeHTTP(respRecorder, r)
		reqEndTime := time.Now().UTC()

		if globalTrace.NumSubscribers(madmin.TraceS3|madmin.TraceInternal) == 0 {
			// no subscribers nothing to trace.
			return
		}

		tt := madmin.TraceInternal
		if strings.HasPrefix(tc.FuncName, "s3.") {
			tt = madmin.TraceS3
		}

		FuncName:  "os." + s.String(),
		Duration:  duration,
		Path:      path,
		Error:     errStr,
	}
}

func updateOSMetrics(s osMetric, paths ...string) func(err error) {
	if globalTrace.NumSubscribers(madmin.TraceOS) == 0 {
		osAction := globalOSMetrics.time(s)
		return func(err error) { osAction() }
	}

	startTime := time.Now()
	return func(err error) {
		duration := time.Since(startTime)

		duration := time.Since(startTime)

		atomic.AddUint64(&p.operations[s], 1)
		if s < scannerMetricLastRealtime {
			p.latency[s].add(duration)
		}

		if s > scannerMetricStartTrace && globalTrace.NumSubscribers(madmin.TraceScanner) > 0 {
			globalTrace.Publish(scannerTrace(s, startTime, duration, strings.Join(paths, " "), custom))
		}
	}
}

// time n scanner actions.
// Use for s < scannerMetricLastRealtime