}
    }

    /**
     * Creates a StorageClient using the default FessConfig.
     *
     * @return configured StorageClient
     */
    public static StorageClient createClient() {
        return createClient(ComponentUtil.getFessConfig());
    }

    /**
     * Parses a storage type string to StorageType enum.
     *
     * @param typeStr the type string (s3, gcs, s3_compat, auto)

    /**
     * Creates a new instance of CrawlerEngineClient.
     */
    public CrawlerEngineClient() {
        super();
    }

    @Override
    protected Client createClient() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final String[] hosts =

            }
        });
        if (logger.isDebugEnabled()) {
            logger.debug("Tags updated: from={}, to={}", tagItems, tags);
        }
        try (StorageClient client = StorageClientFactory.createClient()) {
            client.setObjectTags(objectName, tags);
        } catch (final Exception e) {
            throw new StorageException("Failed to update tags for " + objectName, e);
        }
    }

    /**

  return mimeType.toMediaTypeOrNull()
}

private fun isSpecialHeader(s: String): Boolean = s.equals("Content-Type", ignoreCase = true)

fun Main.commonRun() {
  client = createClient()
  val request = createRequest()

  try {
    val response = client!!.newCall(request).execute()
    if (showHeaders) {
      println(StatusLine.get(response))
      val headers = response.headers

    /**
     * Connects to the OpenSearch cluster.
     * Creates a new client and waits for cluster health to be yellow or better.
     */
    public void connect() {
        destroy();
        client = createClient();

        final String[] indices = targetIndices != null ? targetIndices : new String[0];
        final ClusterHealthResponse healthResponse =

    LoggingUtil.configureLogging(debug = verbose, showHttp2Frames = showHttp2Frames, sslDebug = sslDebug)

    commonRun()
  }

  fun createRequest(): Request = commonCreateRequest()

  fun createClient(): Call.Factory {
    val builder = OkHttpClient.Builder()
    builder.followSslRedirects(followRedirects)
    if (connectTimeout != DEFAULT_TIMEOUT) {
      builder.connectTimeout(connectTimeout.toLong(), SECONDS)

        // Should not throw NullPointerException
        try {
            // Note: We can't easily test connect() fully without mocking createClient()
            // This test verifies the null check logic indirectly
            final String[] indices = fesenClient.targetIndices != null ? fesenClient.targetIndices : new String[0];
            assertNotNull(indices);