/**
     * Default constructor for Transport
     */
    protected Transport() {
        // Default constructor
    }

    private static int id = 0;
    private static final Logger log = LoggerFactory.getLogger(Transport.class);

    /**
     * Read bytes from the input stream into a buffer
     *
     * @param in the input stream to read from
     * @param b the buffer to read into

 */
public class PluginHelper {
    /** Logger instance for this class */
    private static final Logger logger = LogManager.getLogger(PluginHelper.class);

    /**
     * Cache for storing available artifacts by type.
     * The cache expires after 5 minutes and has a maximum size of 10 entries.
     */

     */
    protected static final String THUMBNAILS_DIR_NAME = "thumbnails";

    /**
     * Logger instance for this class.
     */
    protected static final Logger logger = LogManager.getLogger(ThumbnailManager.class);

    /**
     * Base directory for storing thumbnail files.
     */
    protected File baseDir;

    /**
     * List of available thumbnail generators.
     */

    /** Field name for query time in aggregations. */
    private static final String QUERY_TIME = "queryTime";

    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(SearchLogService.class);

    /** Behavior handler for search log operations. */
    @Resource
    private SearchLogBhv searchLogBhv;

    /** Behavior handler for click log operations. */
    @Resource

    //                                                                            Constant
    //

    /** Logger for this class. */
    private static final Logger logger = LogManager.getLogger(SearchHelper.class);

    // ===================================================================================
    //                                                                            Variable
    //

 * Provides centralized access to various helpers, managers, and services throughout the Fess application.
 */
public final class ComponentUtil {

    private static final Logger logger = LogManager.getLogger(ComponentUtil.class);

    /** Component map for storing component instances. */
    private static Map<String, Object> componentMap = new HashMap<>();

 * aliases for resources on cyclic paths will be listed.
 *
 * @author Ben Yu
 * @since 14.0
 */
public final class ClassPath {
  private static final Logger logger = Logger.getLogger(ClassPath.class.getName());

  /** Separator for the Class-Path manifest attribute value in jar files. */
  private static final Splitter CLASS_PATH_ATTRIBUTE_SEPARATOR =
      Splitter.on(" ").omitEmptyStrings();

 * to prevent concurrent execution of maintenance operations across multiple Fess instances.
 */
public class CoordinatorHelper {

    private static final Logger logger = LogManager.getLogger(CoordinatorHelper.class);

    private static final String INDEX_NAME = "fess_config.coordinator";

    private static final String TYPE_HEARTBEAT = "heartbeat";

 * It includes error handling, retry logic, and performance monitoring capabilities.
 *
 */
public class IndexUpdater extends Thread {
    /** Logger for this class */
    private static final Logger logger = LogManager.getLogger(IndexUpdater.class);

    /** List of crawler session IDs to process */
    protected List<String> sessionIdList;

    /** OpenSearch client for index operations */
    @Resource

                //
            }
        }

        slf4jConfiguration.activate();

        plexusLoggerManager = new Slf4jLoggerManager();
        slf4jLogger = slf4jLoggerFactory.getLogger(this.getClass().getName());

        if (commandLine.hasOption(CLIManager.FAIL_ON_SEVERITY)) {
            String logLevelThreshold = commandLine.getOptionValue(CLIManager.FAIL_ON_SEVERITY);