// Arena represents a collection of Go values allocated and freed together.
// Arenas are useful for improving efficiency as they may be freed back to
// the runtime manually, though any memory obtained from freed arenas must
// not be accessed once that happens. An Arena is automatically freed once
// it is no longer referenced, so it must be kept alive (see runtime.KeepAlive)
// until any memory allocated from it is no longer needed.
//

    /**
     * Lock object for synchronizing access to active thread count.
     */
    protected Object activeThreadCountLock = new Object();

    /**
     * Atomic counter for tracking the number of accesses made.
     */
    protected AtomicLong accessCount = new AtomicLong(0);

    /**
     * Current status of the crawler.
     */
    protected volatile CrawlerStatus status = CrawlerStatus.INITIALIZING;

 * <p>
 * The class uses synchronization to ensure thread safety when accessing and modifying the URL queue.
 * It also checks for duplicate URLs before adding them to the queue,
 * both within the queue itself and against previously accessed URLs stored in the {@link MemoryDataHelper}.
 * </p>
 *
 */
/**
 * This class is an implementation of {@link UrlQueueService}.
 */
public class UrlQueueServiceImpl implements UrlQueueService<UrlQueueImpl<Long>> {

    }

    /**
     * Test getMessageByDcerpcError() with an error code larger than any known.
     * The binary search implementation has a bug where it accesses array out of bounds.
     */
    @Test
    void testGetMessageByDcerpcError_largerThanAny() {
        int unknownCode = 0x7FFFFFFF; // Max int value

   * Creates an {@code MonitorBasedArrayBlockingQueue} with the given (fixed) capacity and the
   * specified access policy.
   *
   * @param capacity the capacity of this queue
   * @param fair if {@code true} then queue accesses for threads blocked on insertion or removal,
   *     are processed in FIFO order; if {@code false} the access order is unspecified.
   * @throws IllegalArgumentException if {@code capacity} is less than 1
   */

     * during crawler operations. Each action represents a specific event
     * or milestone in the crawling process.
     */
    public enum StatsAction {
        /** Indicates that a URL was successfully accessed. */
        ACCESSED,
        /** Indicates that an exception occurred during URL access. */
        ACCESS_EXCEPTION,
        /** Indicates that a child URL was discovered. */
        CHILD_URL,

//     processing possible from the customer side).
//     Optional value, default 1024, allowed values 256,512,1024,4096,8192, value defined in KB size.
//
// - The object should be present in all buckets accessed by Veeam products that want to leverage the SOSAPI functionality.
//
// - The current protocol version is 1.0.
type apiEndpoints struct {
	IAMEndpoint string `xml:"IAMEndpoint"`
	STSEndpoint string `xml:"STSEndpoint"`
}

import org.dbflute.cbean.scoping.UnionQuery;
import org.dbflute.cbean.sqlclause.SqlClause;
import org.dbflute.cbean.sqlclause.orderby.OrderByClause;
import org.dbflute.dbmeta.DBMeta;
import org.dbflute.dbmeta.accessory.DerivedTypeHandler;
import org.dbflute.jdbc.StatementConfig;
import org.dbflute.system.DBFluteSystem;
import org.dbflute.twowaysql.style.BoundDateDisplayStyle;
import org.opensearch.action.search.SearchRequestBuilder;

import org.dbflute.cbean.scoping.UnionQuery;
import org.dbflute.cbean.sqlclause.SqlClause;
import org.dbflute.cbean.sqlclause.orderby.OrderByClause;
import org.dbflute.dbmeta.DBMeta;
import org.dbflute.dbmeta.accessory.DerivedTypeHandler;
import org.dbflute.jdbc.StatementConfig;
import org.dbflute.system.DBFluteSystem;
import org.dbflute.twowaysql.style.BoundDateDisplayStyle;
import org.opensearch.action.search.SearchRequestBuilder;

    /** Name of the thread that encountered the failure. */
    public String threadName;

    /** Number of errors encountered for this URL. */
    public String errorCount;

    /** Last time this URL was accessed. */
    public String lastAccessTime;

    /**
     * Clears all pager data and resets to default values.
     * This method resets pagination state and search filters.
     */
    public void clear() {