} catch (final ContainerNotAvailableException e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Crawler is stopped.", e);
            } else if (logger.isInfoEnabled()) {
                logger.info("Crawler is stopped.");
            }
            exitCode = Constants.EXIT_FAIL;
        } catch (final Throwable t) {
            logger.error("Crawler does not work correctly.", t);

import org.codelibs.fess.crawler.service.UrlQueueService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jakarta.annotation.Resource;

/**
 * @author shinsuke
 *
 */
public class UrlQueueServiceImpl implements UrlQueueService<UrlQueueImpl<Long>> {

    private static final Logger logger = LoggerFactory.getLogger(UrlQueueServiceImpl.class);

    @Resource

                }
            }
        }

        return false;
    }

    public void enableLogging(Logger logger) {
        this.logger = logger;
    }

        } catch (final SsoMessageException e) {
            if (e.getCause() == null) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Metadata response.", e);
                }
                saveInfo(e.getMessageCode());
            } else {
                logger.warn("Failed to process metadata.", e);
                saveError(e.getMessageCode());
            }

import jakarta.annotation.PostConstruct;

public class DocumentHelper {
    private static final Logger logger = LogManager.getLogger(DocumentHelper.class);

    protected static final String SIMILAR_DOC_HASH_PREFIX = "$";

    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }
        try {

  private var previousLevel: Level? = null

  override fun beforeEach(context: ExtensionContext?) {
    previousLevel = logger.level
    logger.addHandler(handler)
    logger.setLevel(Level.FINEST)
  }

  override fun afterEach(context: ExtensionContext?) {
    logger.setLevel(previousLevel)
    logger.removeHandler(handler)
  }

  override fun apply(
    base: Statement,
    description: Description,
  ): Statement {

import java.util.List;
import java.util.Map;

import org.codelibs.fess.crawler.container.CrawlerContainer;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import jakarta.annotation.Resource;

public class CrawlerClientCreator {

    private static final Logger logger = LoggerFactory.getLogger(CrawlerClientCreator.class);

    @Resource
    protected CrawlerContainer crawlerContainer;

import org.codelibs.core.exception.ParserConfigurationRuntimeException;
import org.codelibs.core.log.Logger;

/**
 * {@link DocumentBuilderFactory}の用のユーティリティクラスです。
 *
 * @author higa
 */
public abstract class DocumentBuilderFactoryUtil {

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

    /**
     * 新しい {@link DocumentBuilderFactory}のインスタンスを返します。
     *

public class PopularWordHelper {
    private static final Logger logger = LogManager.getLogger(PopularWordHelper.class);

    protected static final char CACHE_KEY_SPLITTER = '\n';

    protected Cache<String, List<String>> cache;

    protected FessConfig fessConfig;

    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initialize {}", this.getClass().getSimpleName());
        }

import org.opensearch.common.xcontent.XContentType;
import org.opensearch.index.query.QueryBuilder;
import org.opensearch.index.query.QueryBuilders;

public class Suggester {
    private static final Logger logger = LogManager.getLogger(Suggester.class);

    protected final Client client;
    protected final SuggestSettings suggestSettings;
    protected final ReadingConverter readingConverter;