*
 * @author shinsuke
 *
 */
public class OpenSearchUrlQueueService extends AbstractCrawlerService implements UrlQueueService<OpenSearchUrlQueue> {
    /**
     * Logger instance.
     */
    private static final Logger logger = LogManager.getLogger(OpenSearchUrlQueueService.class);

    /**
     * Data service for checking access results.
     */
    @Resource
    protected OpenSearchDataService dataService;

        if (logger.isDebugEnabled()) {
            smb1AuthList.forEach(smb1Auth -> logger
                    .debug("Smb1Authentication: " + smb1Auth.getServer() + ":" + smb1Auth.getPort() + " " + smb1Auth.getUsername()));
        }
        paramMap.put(Param.Client.FTP_AUTHENTICATIONS, ftpAuthList.toArray(new FtpAuthentication[ftpAuthList.size()]));
        if (logger.isDebugEnabled()) {

import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import io.restassured.mapper.ObjectMapperType;
import io.restassured.specification.RequestSpecification;

public class ITBase {
    private static final Logger logger = LogManager.getLogger(ITBase.class);
    public static final String DEFAULT_FESS_URL = "http://localhost:8080";

import java.util.concurrent.TimeUnit;
import java.util.logging.Logger;
import org.jspecify.annotations.NullUnmarked;

/**
 * Utilities for performing thread interruption in tests
 *
 * @author Kevin Bourrillion
 * @author Chris Povirk
 */
@NullUnmarked
@GwtIncompatible
@J2ktIncompatible
final class InterruptionUtil {
  private static final Logger logger = Logger.getLogger(InterruptionUtil.class.getName());

                    }
                } else {
                    logger.warn("Thumbnail generator is not available: name={}", generatorName);
                }
            } else if (logger.isDebugEnabled()) {
                logger.debug("No image file exists: {}", noImageFile.getAbsolutePath());
            }
        } catch (final Exception e) {
            logger.warn("Failed to create thumbnail for {}", entity, e);
        }
    }

import org.mockito.junit.jupiter.MockitoExtension;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Base test class providing common test infrastructure and utilities.
 * All test classes should extend this to ensure consistent test setup.
 */
@ExtendWith(MockitoExtension.class)
public abstract class BaseTest {

    protected final Logger logger = LoggerFactory.getLogger(getClass());

    @BeforeEach

        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to apply interval control rules", e);
            }
        }

        try {
            super.delayForWaitingNewUrl();
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to execute parent delay logic", e);
            }

+-----+

* Logger Name

 Logger name is basically the classical fully qualified class name: it's not visible by default, but can be activated (see {{{/maven-logging.html}user documentation}}).

 Notice that before Maven 3.1.0, with logger created by Maven, some code used to pass logger from class to class because it could not create a new logger:

import java.util.Properties;

import org.codelibs.core.misc.DynamicProperties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Test implementation of system properties that loads from classpath
 */
public class TestSystemProperties extends DynamicProperties {

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

    public TestSystemProperties() {

     */
    public CrawlerLogHelper() {
        super();
    }

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

    @Override
    public void log(final LogType key, final Object... objs) {
        if (!ComponentUtil.available()) {
            if (logger.isDebugEnabled()) {
                logger.debug("container was destroyed.");
            }
            return;
        }