type lazyInit struct {
	done uint32
	m    sync.Mutex
}

func (l *lazyInit) Do(f func() error) error {
	if atomic.LoadUint32(&l.done) == 0 {
		return l.doSlow(f)
	}
	return nil
}

func (l *lazyInit) doSlow(f func() error) error {
	l.m.Lock()
	defer l.m.Unlock()
	if atomic.LoadUint32(&l.done) == 0 {
		if err := f(); err != nil {
			return err
		}

    private static final long serialVersionUID = 1L;

    public static final String DEBUG = "DEBUG";

    public static final String INFO = "ERROR";

    public static final String WARN = "WARN";

    public static final String ERROR = "ERROR";

    private String logLevel = INFO;

    public CrawlingAccessException(final String message, final Throwable cause) {
        super(message, cause);
    }

        // Cyclic Dependency Error

        if (result.hasCircularDependencyExceptions()) {
            throw result.getCircularDependencyException(0);
        }

        // Version Range Violation

        if (result.hasVersionRangeViolations()) {
            throw result.getVersionRangeViolation(0);
        }

        // Transfer Error

        if (result.hasErrorArtifactExceptions()) {

// the directory itself, if the dirPath doesn't exist this function doesn't return
// an error.
func readDirFn(dirPath string, filter func(name string, typ os.FileMode) error) error {
	d, err := Open(dirPath)
	if err != nil {
		if osErrToFileErr(err) == errFileNotFound {
			return nil
		}
		return osErrToFileErr(err)
	}
	defer d.Close()

	maxEntries := 1000
	for {
		// Read up to max number of entries.

        in 100..199 -> "Informational"
        in 200..299 -> "OK"
        in 300..399 -> "Redirection"
        in 400..499 -> "Client Error"
        in 500..599 -> "Server Error"
        else -> "Mock Response"
      }
    return apply { status = "HTTP/1.1 $code $reason" }
  }

  fun clearHeaders() =
    apply {
      headersBuilder = Headers.Builder()
    }

  fun addHeader(header: String) =

	"github.com/minio/minio/internal/event/target"
)

// SetNotifyKafka - helper for config migration from older config.
func SetNotifyKafka(s config.Config, name string, cfg target.KafkaArgs) error {
	if !cfg.Enable {
		return nil
	}

	if err := cfg.Validate(); err != nil {
		return err
	}

	s[config.NotifyKafkaSubSys][name] = config.KVS{
		config.KV{
			Key:   config.Enable,

        String s = props.getProperty(key);
        if ( s != null ) {
            try {
                def = Integer.parseInt(s);
            }
            catch ( NumberFormatException nfe ) {
                log.error("Not a number", nfe);
            }
        }
        return def;
    }


    /**
     * Retrieve an <code>int</code>. If the property is not found, <code>-1</code> is returned.
     */

// for os.OpenFile().
func LockedOpenFile(path string, flag int, perm os.FileMode) (*LockedFile, error) {
	return lockedOpenFile(path, flag, perm, syscall.F_SETLKW)
}

// Open - Call os.OpenFile
func Open(path string, flag int, perm os.FileMode) (*os.File, error) {
	return os.OpenFile(path, flag, perm)

func bytesToPrivateKey(priv []byte) (*rsa.PrivateKey, error) {
	// Try PEM
	if block, _ := pem.Decode(priv); block != nil {
		return x509.ParsePKCS1PrivateKey(block.Bytes)
	}
	// Try base 64
	dst := make([]byte, base64.StdEncoding.DecodedLen(len(priv)))
	if n, err := base64.StdEncoding.Decode(dst, priv); err == nil {
		return x509.ParsePKCS1PrivateKey(dst[:n])
	}
	// Try Raw, return error
	return x509.ParsePKCS1PrivateKey(priv)
}

  override val isReady = false

  override fun connectTcp() = result

  override fun connectTlsEtc() = result

  override fun handleSuccess() = error("unexpected call")

  override fun cancel() = error("unexpected cancel")

  override fun retry() = error("unexpected retry")