}
	}
}

// MetricsLoaderFn - represents a function to load metrics from the
// metricsCache.
//
// Note that returning an error here will cause the Metrics handler to return a
// 500 Internal Server Error.
type MetricsLoaderFn func(context.Context, MetricValues, *metricsCache) error

// JoinLoaders - joins multiple loaders into a single loader. The returned

type ReplicationWorkerOperation interface {
	ToMRFEntry() MRFReplicateEntry
}

const (
	// WorkerMaxLimit max number of workers per node for "fast" mode
	WorkerMaxLimit = 500

	// WorkerMinLimit min number of workers per node for "slow" mode
	WorkerMinLimit = 50

	// WorkerAutoDefault is default number of workers for "auto" mode
	WorkerAutoDefault = 100

	time.Sleep(w.timeout)
	return len(p), nil
}

func (w *sleepWriter) Close() error {
	return nil
}

func TestDeadlineWriter(t *testing.T) {
	w := NewDeadlineWriter(&sleepWriter{timeout: 500 * time.Millisecond}, 450*time.Millisecond)
	_, err := w.Write([]byte("1"))
	if err != context.DeadlineExceeded {
		t.Error("DeadlineWriter shouldn't be successful - should return context.DeadlineExceeded")
	}

		if err != nil {
			if err == errConfigNotFound {
				return errNoSuchPolicy
			}
			retries--
			if retries <= 0 {
				return err
			}
			time.Sleep(500 * time.Millisecond)
			goto retry
		}

		var p PolicyDoc
		err = p.parseJSON(data)
		if err != nil {
			return err
		}

		if p.Version == 0 {

	// Maximum size for user-defined metadata - See: https://docs.aws.amazon.com/AmazonS3/latest/dev/UsingMetadata.html
	maxUserDataSize = 2 * 1024

	// maxBuckets upto 500000 for any MinIO deployment.
	maxBuckets = 500 * 1000
)

// ReservedMetadataPrefix is the prefix of a metadata key which
// is reserved and for internal use only.
const (
	ReservedMetadataPrefix      = "X-Minio-Internal-"

			if err := file.AtomicCopy(filepath.Join("testdata", c.validConfigFilename), tempDir, c.cniConfigFilename); err != nil {
				t.Fatal(err)
			}

			// Listen for isReady to be set to true
			ticker := time.NewTicker(500 * time.Millisecond)
			defer ticker.Stop()
			readyChan := make(chan bool)
			go func(ctx context.Context, tick <-chan time.Time) {
				for {
					select {
					case <-ctx.Done():
						return

	// Unfreeze as soon as request context is canceled or when the function returns.
	go func() {
		<-ctx.Done()
		globalNotificationSys.ServiceFreeze(ctx, false)
	}()

	keepAliveTicker := time.NewTicker(500 * time.Millisecond)
	defer keepAliveTicker.Stop()

	enc := json.NewEncoder(w)
	ch := objectSpeedTest(ctx, speedTestOpts{
		objectSize:       size,
		concurrencyStart: concurrent,

	dataUsageUpdateDirCycles         = 16                               // Visit all folders every n cycles.
	dataScannerCompactLeastObject    = 500                              // Compact when there is less than this many objects in a branch.
	dataScannerCompactAtChildren     = 10000                            // Compact when there are this many children in a branch.

	var epsResolved int
	var foundLocal bool
	resolvedList := make([]bool, len(endpoints))
	// Mark the starting time
	startTime := time.Now()
	keepAliveTicker := time.NewTicker(500 * time.Millisecond)
	defer keepAliveTicker.Stop()
	for {
		// Break if the local endpoint is found already Or all the endpoints are resolved.
		if foundLocal || (epsResolved == len(endpoints)) {
			break
		}

		{
			bucketName:       bucketName,
			uploadID:         uploadID,
			copySourceHeader: url.QueryEscape(SlashSeparator + bucketName + SlashSeparator + objectName),
			copySourceRange:  "bytes=500-4096",
			accessKey:        credentials.AccessKey,
			secretKey:        credentials.SecretKey,

			expectedRespStatus: http.StatusOK,
		},

		// Test case - 5.
		// Test case with invalid byte range.