// such as, ":9000", "localhost:9000", "http://localhost:9000/"
func extractHostPort(hostAddr string) (string, string, error) {
	var addr, scheme string

	if hostAddr == "" {
		return "", "", errors.New("unable to process empty address")
	}

	// Simplify the work of url.Parse() and always send a url with
	if !strings.HasPrefix(hostAddr, "http://") && !strings.HasPrefix(hostAddr, "https://") {
		hostAddr = "//" + hostAddr

	}

	if cap(t.requestsPool) != apiRequestsMaxPerNode {
		// Only replace if needed.
		// Existing requests will use the previous limit,
		// but new requests will use the new limit.
		// There will be a short overlap window,
		// but this shouldn't last long.
		t.requestsPool = make(chan struct{}, apiRequestsMaxPerNode)
	}
	listQuorum := cfg.ListQuorum
	if listQuorum == "" {

		owner = false
	}

	return cred, owner, ErrNone
}

// sumHMAC calculate hmac between two input byte array.
func sumHMAC(key []byte, data []byte) []byte {
	hash := hmac.New(sha256.New, key)
	hash.Write(data)
	return hash.Sum(nil)
}

// extractSignedHeaders extract signed headers from Authorization header

		if r.args.FileHeaderInfo == use {
			// Copy column names since records will be reused.
			columns := append(make([]string, 0, len(record)), record...)
			r.columnNames = columns
		}
	}

	r.bufferPool.New = func() []byte {
		return make([]byte, csvSplitSize+1024)
	}

	// Return first block
	next, nextErr := r.nextSplit(csvSplitSize, r.bufferPool.Get())
	// Check if first block is valid.
	if !utf8.Valid(next) {

	if !a.Enable {
		return nil
	}
	if _, err := amqp091.ParseURI(a.URL.String()); err != nil {
		return err
	}
	if a.QueueDir != "" {
		if !filepath.IsAbs(a.QueueDir) {
			return errors.New("queueDir path should be absolute")
		}
	}

	return nil
}

// AMQPTarget - AMQP target
type AMQPTarget struct {
	initOnce once.Init

	id         event.TargetID
	args       AMQPArgs

func (er *erasureObjects) healErasureSet(ctx context.Context, buckets []string, tracker *healingTracker) error {
	bgSeq, found := globalBackgroundHealState.getHealSequenceByToken(bgHealingUUID)
	if !found {
		return errors.New("no local healing sequence initialized, unable to heal the drive")
	}

	scanMode := madmin.HealNormalScan

	// Make sure to copy since `buckets slice`
	// is modified in place by tracker.

	EnvKafkaQueueSize     = "MINIO_AUDIT_KAFKA_QUEUE_SIZE"

	loggerTargetNamePrefix = "logger-"
	auditTargetNamePrefix  = "audit-"
)

var (
	errInvalidQueueSize = errors.New("invalid queue_size value")
	errInvalidBatchSize = errors.New("invalid batch_size value")
)

// Default KVS for loggerHTTP and loggerAuditHTTP
var (
	DefaultLoggerWebhookKVS = config.KVS{
		config.KV{
			Key:   config.Enable,

    //                                                                           =========
    private static final FileAuthenticationDbm _instance = new FileAuthenticationDbm();

    private FileAuthenticationDbm() {
    }

    public static FileAuthenticationDbm getInstance() {
        return _instance;
    }

    //                                                                              ======
    @Override
    public Map<String, Object> toSource() {
        Map<String, Object> sourceMap = new HashMap<>();
        if (available != null) {
            addFieldToSource(sourceMap, "available", available);
        }
        if (boost != null) {
            addFieldToSource(sourceMap, "boost", boost);
        }

    //                                                                         ===========
    public static CrawlerPostcard droppedInto(Postbox postbox, MPCall<CrawlerPostcard> postcardLambda) {
        CrawlerPostcard postcard = new CrawlerPostcard();
        postcardLambda.write(postcard);
        postbox.post(postcard);
        return postcard;
    }

    // ===================================================================================