* for compatibility.
   *
   * @since 30.0
   */
  public static final MediaType FONT_SFNT = createConstant(FONT_TYPE, "sfnt");

  /**
   * <a href="https://en.wikipedia.org/wiki/TrueType">True Type Font Format</a> (TTF) as defined by
   * <a href="https://tools.ietf.org/html/rfc8081">RFC 8081</a>.
   *
   * @since 30.0
   */
  public static final MediaType FONT_TTF = createConstant(FONT_TYPE, "ttf");

	var errStr string
	if err != nil {
		errStr = err.Error()
	}
	traceType := madmin.TraceBatchReplication
	switch d {
	case batchJobMetricKeyRotation:
		traceType = madmin.TraceBatchKeyRotation
	case batchJobMetricExpire:
		traceType = madmin.TraceBatchExpire
	}
	funcName := fmt.Sprintf("%s() (job-name=%s)", d.String(), job)
	if attempts > 0 {

		if reqPath == "" {
			reqPath = r.URL.Path
		}

		// Calculate function name
		funcName := tc.FuncName
		if funcName == "" {
			funcName = "<unknown>"
		}

		t := madmin.TraceInfo{
			TraceType: tt,
			FuncName:  funcName,
			NodeName:  nodeName,
			Time:      reqStartTime,
			Duration:  reqEndTime.Sub(respRecorder.StartTime),
			Path:      reqPath,
			Bytes:     int64(inputBytes + respRecorder.Size()),

	globalOSSignalCh        = make(chan os.Signal, 1)

	// global Trace system to send HTTP request/response
	// and Storage/OS calls info to registered listeners.
	globalTrace = pubsub.New[madmin.TraceInfo, madmin.TraceType](8)

	// global Listen system to send S3 API events to registered listeners
	globalHTTPListen = pubsub.New[event.Event, pubsub.Mask](0)

	// global console system to send console logs to
	// registered listeners

}

func storageTrace(s storageMetric, startTime time.Time, duration time.Duration, path string, size int64, err string, custom map[string]string) madmin.TraceInfo {
	return madmin.TraceInfo{
		TraceType: madmin.TraceStorage,
		Time:      startTime,
		NodeName:  globalLocalNodeName,
		FuncName:  "storage." + s.String(),
		Duration:  duration,
		Bytes:     size,
		Path:      path,
		Error:     err,

		isErrObjectNotFound(err) ||
		isErrBucketNotFound(err) ||
		errors.Is(err, os.ErrDeadlineExceeded) ||
		notInitialized
}

func bootstrapTraceMsg(msg string) {
	info := madmin.TraceInfo{
		TraceType: madmin.TraceBootstrap,
		Time:      UTCNow(),
		NodeName:  globalLocalNodeName,
		FuncName:  "BOOTSTRAP",
		Message:   fmt.Sprintf("%s %s", getSource(2), msg),
	}
	globalBootstrapTracer.Record(info)

func shouldTrace(trcInfo madmin.TraceInfo, opts madmin.ServiceTraceOpts) (shouldTrace bool) {
	// Reject all unwanted types.
	want := opts.TraceTypes()
	if !want.Contains(trcInfo.TraceType) {
		return false
	}

	isHTTP := trcInfo.TraceType.Overlaps(madmin.TraceInternal|madmin.TraceS3) && trcInfo.HTTP != nil

	// Check latency...
	if opts.Threshold > 0 && trcInfo.Duration < opts.Threshold {
		return false
	}

// healTrace sends healing results to trace output.
func healTrace(funcName healingMetric, startTime time.Time, bucket, object string, opts *madmin.HealOpts, err error, result *madmin.HealResultItem) {
	tr := madmin.TraceInfo{
		TraceType: madmin.TraceHealing,
		Time:      startTime,
		NodeName:  globalLocalNodeName,
		FuncName:  "heal." + funcName.String(),
		Duration:  time.Since(startTime),
		Path:      pathJoin(bucket, decodeDirObject(object)),

	var errStr string
	if err != nil {
		errStr = err.Error()
	}
	return madmin.TraceInfo{
		TraceType: madmin.TraceRebalance,
		Time:      startTime,
		NodeName:  globalLocalNodeName,
		FuncName:  fmt.Sprintf("rebalance.%s (pool-id=%d)", r.String(), poolIdx),
		Duration:  duration,
		Path:      path,

}

func ilmTrace(startTime time.Time, duration time.Duration, oi ObjectInfo, event string, metadata map[string]string, err string) madmin.TraceInfo {
	sz, _ := oi.GetActualSize()
	return madmin.TraceInfo{
		TraceType: madmin.TraceILM,
		Time:      startTime,
		NodeName:  globalLocalNodeName,
		FuncName:  event,
		Duration:  duration,
		Path:      pathJoin(oi.Bucket, oi.Name),
		Bytes:     sz,
		Error:     err,